CN103945258A - Channel switching method and television receiving device - Google Patents
Channel switching method and television receiving device Download PDFInfo
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Abstract
The invention provides a channel switching method applied to a television receiving device. The channel switching method include the steps that prompt messages of audio and video content of each channel are obtained from an EPG and then are pre-stored; a channel switching instruction is received; the channel switching instrument is analyzed, and a code of a target channel is obtained; audio and video of the target frequency are buffered, and according to the code of the target channel, the prompt messages of the audio and video content of the target channel are called and displayed; after buffering of the audio and the video of the target channel is finished, the prompt messages are stopped from being displayed, and the audio and the video of the target channel are played. According to the channel switching method, before buffering of the audio and the video of the target channel is finished, the prompt messages of the audio and video content of the target channel are displayed. A user can quickly judge whether the audio and video content of the target channel meets requirements of himself according to the prompt messages and then make a choice.
Description
Technical field
The present invention relates to Display Technique field, method and radiovisor that particularly a kind of channel switches.
Background technology
Along with the increase of TV programme operator, and Digital Television and and the emerging TV programme transmission means such as internet television universal, the channel quantity of the TV programme that user can receive significantly increases, and to people, brings more alternative.User increases gradually to the fastidious property of TV programme simultaneously, switches, to select in time and watch the TV programme of oneself liking through being everlasting between different channels.
In channel handoff procedure, before the audio frequency and video normal play of target channel, need first the audio frequency and video of target channel to be cushioned.In the buffering course of the audio frequency and video of target channel, need to complete decoder data exchange between original channel and target channel in transport stream, the decoding of the data of target channel, and the synchronous processing of target channel Voice & Video, all need the time of growing.The buffering course of target channel just causes the content of target channel to be presented at temporal delay like this, and the content that can not present target channel timely on display screen is to user.And in channel handoff procedure, because the data of original channel and target channel likely can be disturbed, and on display screen, present mess code image.In existing channel switching method, at target channel buffer stage, in front end display, show blank screen or blue screen, avoid the pessimal stimulation of mess code image to user's vision.
But, blank screen or blue screen still cannot present the information about the video content of target channel to spectators in time, user is difficult to judge whether the video content of target channel meets the demand of oneself, need to wait for the longer time, after treating the audio frequency and video of normal play target channel, just can judge, like this, at switching channels, select to watch in the process of channel, each channel switches all need to wait for the longer time in the audio frequency and video buffering course of target channel, causes the selection course of channel can expend the more time.
Summary of the invention
The embodiment of the present application is by providing a kind of channel switching method and radiovisor, solve blank screen in prior art channel handoff procedure or blue screen and cannot present in time the defect of information of the video content of ownership goal channel, realized in channel handoff procedure, fast the information of the video content of display-object channel.
The invention provides a kind of channel switching method, be applied to a radiovisor, comprise the information of the audio-video frequency content that obtains each channel from EPG, the step of this information that prestores, further comprising the steps of: receiving channels switching command; Resolve this channel switching instruction, obtain target channel coding; The audio frequency and video of buffering target channel, according to this target channel coding, transfer target channel audio-video frequency content information and show this information; After the audio frequency and video of this target channel have cushioned, stop showing this information, play the audio frequency and video of this target channel.
Preferably, obtain the information of the audio-video frequency content of each channel according to EPG, the step of the described information that prestores is specially: according to EPG, obtain the information of the audio-video frequency content of each time of each channel, described information prestores.The audio frequency and video of buffering target channel, according to described target channel coding, transfer described information and show that the step of described information is specially: the audio frequency and video of buffering target channel, according to target channel coding and current time, transfer the described information of target channel and control the described information of demonstration.
Especially, this EPG obtains by the Internet.
Especially, this EPG obtains by digital television signal.
Preferably, the step of information of obtaining the audio-video frequency content of each channel from EPG is specially: from the Internet, obtain an EPG, from digital television signal source, obtain the 2nd EPG; Relevant information to each channel in an EPG and the 2nd EPG contrasts; When identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to an EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores; When not identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to the 2nd EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores.
Preferably, this information is picture.
The present invention provides a kind of radiovisor simultaneously, comprising:
Information record cell, for obtain the information of the audio-video frequency content of each channel according to EPG, this information prestores;
Instruction fetch unit, for receiving channels switching command;
Processing unit, according to channel switching instruction, obtains target channel coding;
Indicative control unit, for cushioning the audio frequency and video of target channel, according to this target channel coding, information the control of transferring the audio-video frequency content of target channel show this information; After the audio frequency and video of this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
Preferably, this information record cell, for obtain the information of the audio-video frequency content of each time of each channel according to EPG, this information prestores.This indicative control unit, for cushioning the audio frequency and video of target channel, according to this target channel coding and current time, information the control of transferring the audio-video frequency content of target channel show this information; After the audio frequency and video of this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
Preferably, this EPG obtains by the Internet.
Preferably, this EPG obtains by digital television signal.
Preferably, this information record cell, for: from the Internet, obtain an EPG, from digital television signal source, obtain the 2nd EPG; Obtain the programm name of each each time of channel in an EPG and obtain the programm name of each each time of channel in the 2nd EPG and compare; When identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to an EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores; When not identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to the 2nd EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores.Described programm name refers to the symbol of pickup program, comprises program name Completion, program abbreviation, program code etc.
Preferably, this information is picture.
The improvements of the program of the present invention are, while cushioning target channel audio frequency and video before the audio frequency and video of playing this target channel, transfer the information of the audio-video frequency content of target channel, show this information; In the buffering course of the audio frequency and video of target channel, need to complete decoder data exchange between original channel and target channel in transport stream, the decoding of the data of target channel, and the synchronous processing of target channel Voice & Video, all need the time of growing; And this information is pre-stored in radiovisor, the acquisition time of this information is short, and relative data amount is less, and the time of processes and displays will be much smaller than target channel buffer time.And then can before completing, buffering show in advance this information.
The invention allows for a kind of channel switching method, be applied to a radiovisor, comprise the following steps: receiving channels switching command; Resolve this channel switching instruction, obtain target channel coding; The audio frequency and video of buffering target channel, according to this target channel coding, capture in real time a two field picture of this target channel as information, and show this information; After the audio frequency and video of this target channel have cushioned, stop showing this information, play the audio frequency and video of this target channel.
Meanwhile, the present invention also provides a kind of radiovisor, comprising: instruction fetch unit, for receiving channels switching command; Processing unit, according to channel switching instruction, obtains target channel coding; Indicative control unit, for cushioning the audio frequency and video of target channel, according to this target channel coding, captures in real time a two field picture of this target channel as information, and controls this information of demonstration; After the audio frequency and video of this target channel have cushioned, control and stop showing this information, play the audio frequency and video of this target channel.
The improvements of another program of the present invention are, in the process of the audio frequency and video of buffering target channel, need to complete successively decoder data exchange between original channel and target channel in transport stream, the decoding of the data of target channel, and the synchronous processing of target channel Voice & Video.In the decode procedure of the data of target channel, need image and voice data to decode, after the view data of target channel is decoded, can be before the synchronous processing of the Voice & Video of target channel, obtain a frame image data of having decoded, the information using this image as target channel shows.And then can be before the synchronous processing of the Voice & Video of target channel, the information of display-object channel in advance.
To sum up be somebody's turn to do, before the solution of the present invention can cushion in the audio frequency and video of target channel, the information of the audio-video frequency content of display-object channel.Make user judge that fast whether the content of the audio frequency and video of target channel meets the demand of oneself, and then further select by this information.
Accompanying drawing explanation
The flow chart of Fig. 1 the embodiment of the present application one mid band changing method;
Fig. 2 the embodiment of the present application two mid band changing method flow processs;
The flow chart of Fig. 3 the embodiment of the present application three mid band changing methods.
Embodiment
Channel switching method of the present invention, at the buffer stage of target channel, transfers the information relevant to target channel immediately, and is showing screen display.By showing in advance the programme content of ownership goal channel, make user can judge whether fast to meet the demand of oneself, and then further select, shortened user's the judgement stand-by period.
Channel switching method in the present embodiment can be applied in the radiovisors such as television set, Set Top Box.
In order better to understand technique scheme, below in conjunction with Figure of description and concrete execution mode, technique scheme is described in detail.
Embodiment mono-:
The present embodiment provides a kind of channel switching method, is applied in a television set.
As shown in Figure 1, the method, need to comprise steps A 0, from EPG, obtain the information of the audio-video frequency content of each channel, and this information prestores.
EPG(Electronic Program Guide, electric program menu) be the introductory information electronic guide about each channel TV program.Conventionally can comprise the reproduction time to each TV programme in each channel, the relevant introduction of each channel and each channel TV program.
Concrete, EPG can obtain by the Internet.In the Internet, have for each channel and introduce in detail.In EPG by Network Capture, corresponding and each channel, comprise the URL address of the introductory information of its content.After radiovisor interconnection network, can obtain network EPG information, and from this EPG, parse the URL address of the relevant introductory information of each channel.And from this URL address, by Network Capture, arrive these introductory information, comprise picture or text etc.And be stored in television set the information as this channel.
The EPG information of obtaining by the Internet, due to the URL address that has comprised the introductory information of explaining each channel, further obtains the introductory information of each channel according to this URL address, be pre-stored in television set.Because the introductory information on the Internet is compared with horn of plenty, so in this way, can obtain the information as each channel compared with the introductory information of each channel of horn of plenty, later stage and then the more introduction about target channel of horn of plenty can be provided.
Concrete, EPG can be by obtaining by digital television signal.Existing digital television signal supplier, when the audio, video data of each channel is provided, also can provide EPG, can comprise the introductory information about each channel in this EPG.Television set, after receiving digital television signal, can obtain EPG wherein, and then resolves this EPG, obtains wherein about the introductory information of each channel, and introductory information can be picture or text etc.This introductory information is stored in television set to the information as this channel.
For obtaining EPG by digital television signal, and then obtain the mode of the information of each channel, because the audio-video frequency content of EPG and each channel all obtains in same digital television signal suppliers, be that the introductory information of each channel is for providing the provider of the audio-video frequency content of this channel to provide, can guarantee accuracy and the authority of this introductory information, can guarantee the accuracy of the corresponding relation of this introductory information and channel.And then guarantee that the later stage offers accuracy and the authority of information of each channel of user.
Resolve this EPG information, can obtain the channel coding of each channel, then the memory address at radiovisor according to introductory information, in television set, set up an information database, the incidence relation that this information database comprises above-mentioned each channel and the memory address of its information in radiovisor.For example:
| Channel coding | Information memory address |
| CCTV1 | C/js/ CCTV 1 |
| CCTV2 | C/js/ CCTV 2 |
| CCTV3 | C/js/ CCTV 3 |
| CCTV4 | C/js/ CCTV 4 |
So that the later stage is obtained the memory address of corresponding information according to this information database, and then obtain this information, and show.
Concrete, in channel handoff procedure each time, need to carry out following steps:
Steps A 1, receiving channels switching command;
Steps A 2, resolve this channel switching instruction, obtain target channel coding;
The audio frequency and video of steps A 3, buffering target channel, according to this target channel coding, information the control of transferring the audio-video frequency content of target channel show this information;
After the audio frequency and video of steps A 4, this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
The detailed process of each concrete step is as follows:
Steps A 1, receiving channels switching command;
User can send channel switching instruction to television set by remote controller, also can directly send instruction by touch-screen or the button of display device, or sends channel switching instruction by voice, gesture etc.Can utilize any technological means of the prior art to send channel switching instruction.The channel that contains target channel in this channel switching instruction.
Television set can be accepted this channel switching instruction by corresponding mode.The touch-control of for example accepting user by touch-screen, button obtains, and receives user's voice or gesture, and then obtain channel switching instruction by voice monitoring device or gesture supervising device etc.The channel that contains target channel in this channel switching instruction.
For example, we will want to watch the program of the 1st channel, and this channel switching instruction at least comprises channel " 1 ".
Steps A 2, resolve this channel switching instruction, obtain target channel coding.
Television set receives after channel switching instruction, this channel switching instruction is resolved, the channel of the target channel in receiving channels switching command, obtain the corresponding channel coding of channel, this channel coding can be channel name, for example the 1st channel, corresponding to CCTV1 channel, can be determined according to channel " 1 " " CCTV1 channel ".In radiovisor, channel coding may be code, as " CCTV1 " etc.
The audio frequency and video of steps A 3, buffering target channel, according to this target channel coding, information the control of transferring the audio-video frequency content of target channel show this information.
Obtain after target channel coding, according to channel coding, determine target channel, start to cushion the audio frequency and video of target channel.
According to this target channel coding, according to this information database, obtain the memory address of corresponding information, and then obtain this information simultaneously.This is not to emphasize that both trigger time simultaneously, and be that both can walk abreast, carries out.
For example, the information of this each channel is associated with channel coding, according to the channel coding of CCTV1, can in information database, extract the memory address of the information of CCTV1, and then obtains the information of the audio-video frequency content of CCTV1.
Get after the information of target channel, control and show this information.
After the audio frequency and video of steps A 4, this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
After target channel has cushioned, the buffer module of television set feedback completion status is to the control unit of television set, and control unit is controlled display and stopped at once showing this information, and controls the audio frequency and video that start to play this target channel.Like this, the audio frequency and video buffering course of target channel, once completing, can finish the demonstration of information, plays the audio frequency and video of target channel.Thereby make user's normal tv content of watching target channel as far as possible early.
Certainly, after the audio frequency and video of this target channel have cushioned, stop showing this information, the audio frequency and video of playing this target channel also can realize as follows:
This information is play the scheduled time, after this scheduled time, stops showing this information, plays the audio frequency and video of this target channel.This scheduled time is more than or equal to the buffering time used of target channel.For example, the buffer time of target channel generally can complete with interior at 2s, and the displaying time that can set information is 2s, and this information shows after 2s, and finish information and show, and the audio frequency and video of the broadcasting " CCTV1 " immediately having cushioned.
Preferably, this information is picture.
In target channel buffering course, can insert timely a secondary picture, show intuitively the programme content of ownership goal channel in advance, make user have a visual experience intuitively, thereby can judge whether fast fast to meet the demand of oneself, and then further select.Meanwhile, because the brightness relative difference of picture and video is less, the stimulation that can not produce excessive luminance difference, has avoided user to cause unnecessary vision injury.
Preferably, picture is full screen display.When the pixel value of this picture is different from the pixel value of display screen, when showing this picture, this picture is stretched or shrink process, the resolution of this picture making is identical with the pixel value of display screen, is displayed in full screen this picture.Like this, picture full screen display, can avoid picture demonstration excessive and that produce imperfect on the one hand, and then it is imperfect to avoid offering user's information.On the other hand, in the time of can avoiding picture too small, picture only occupies a part of display space, can not make full use of the problem of display space, to provide the full direct feel of trying one's best greatly to user as far as possible.
Above-mentioned channel switching method, not only can be applied in television set, also can be applied in the radiovisors such as Set Top Box, intelligent box.
Meanwhile, the present embodiment provides the present invention that a kind of radiovisor is provided simultaneously, comprising:
Information record cell, for obtain the information of the audio-video frequency content of each channel according to EPG, this information prestores;
Instruction fetch unit, for receiving channels switching command;
Processing unit, according to channel switching instruction, obtains target channel coding;
Indicative control unit, for cushioning the audio frequency and video of target channel, according to this target channel coding, information the control of transferring the audio-video frequency content of target channel show this information; After the audio frequency and video of this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
Preferably, indicative control unit comprises buffer cell and control unit, and control unit, for according to this target channel coding, is transferred information this information of control demonstration of the audio-video frequency content of target channel; Buffer cell, for cushioning the audio frequency and video of target channel, the audio frequency and video of this target channel have cushioned rear feedback completion status to control unit, and control unit receives after the completion status of control unit feedback and controls and stop showing this information, controls the audio frequency and video of playing this target channel.
Preferably, indicative control unit comprises buffer cell and control unit, and control unit, for according to this target channel coding, is transferred information this information of control demonstration of the audio-video frequency content of target channel; Buffer cell, for cushioning the audio frequency and video of target channel; Control unit is controlled this information and is play after the scheduled time and control and stop showing this information, controls the audio frequency and video of playing this target channel.This scheduled time is more than or equal to the buffering time used of target channel channel.
Preferably, this EPG obtains by the Internet.
Preferably, this EPG obtains by digital television signal.
Preferably, this information is picture.
Above-mentioned radiovisor, can be television set, Set Top Box, intelligent box etc., in this no limit.
Technical scheme in above-mentioned the embodiment of the present application, at least has following technique effect or advantage:
While cushioning target channel audio frequency and video before the audio frequency and video of playing this target channel, transfer the information of the audio-video frequency content of target channel, show this information; In the buffering course of the audio frequency and video of target channel, need to complete decoder data exchange between original channel and target channel in transport stream, the decoding of the data of target channel, and the synchronous processing of target channel Voice & Video, all need the time of growing; And this information is pre-stored in radiovisor, the acquisition time of this information is short, and relative data amount is less, and the time of processes and displays will be much smaller than target channel buffer time.Show in advance the information of the audio-video frequency content of ownership goal channel.Make user can judge fast that whether target channel meets the demand of oneself, and then further select.
Embodiment bis-
The present embodiment provides a kind of channel switching method, is applied in a television set.
As Fig. 2 should, the method, need to comprise step B0, according to EPG, obtain the information of the audio-video frequency content of each time of each channel, this information prestores.
Concrete, EPG can obtain by the Internet.In the Internet, have the detailed introduction for each program of each channel.In EPG by Network Capture, the program of corresponding and each channel, comprises the introductory information URL address of this programme content.After television set interconnection network, network EPG information be can obtain, and URL address and time corresponding to each program about the introductory information of the program of each channel from EPG, parsed.Accordingly, the introductory information to time that should program that can be using the introductory information of this program as this channel.And according to this URL address, by Network Capture, arrive these introductory information, comprise picture or text etc.And be stored in radiovisor the information as the corresponding time of the program of this channel.
The EPG information of obtaining by the Internet, due to the URL address of the introductory information that has comprised the different programs of explaining each channel, further obtains the introductory information of each channel according to this URL address, be pre-stored in television set.Because the introductory information on the Internet is compared with horn of plenty, so in this way, can obtain the information as the corresponding time of program compared with the introductory information of the different programs of each channel of horn of plenty, later stage and then the more introduction of the current program about target channel of horn of plenty can be provided.
Concrete, EPG can be by obtaining by digital television signal.Existing digital television signal supplier, when the audio, video data of each channel is provided, also can provide EPG, can comprise about the introductory information of program of each channel and the reproduction time of the program of each channel in this EPG.Television set, after receiving digital television signal, can obtain EPG wherein, and then resolves this EPG, obtains wherein the introductory information about each program of each channel, and the information using this introductory information as the corresponding time of the program of this channel.Introductory information can be picture or text etc.This introductory information is stored in radiovisor as the information of each time of this channel.
For obtaining EPG by digital television signal, and then obtain the mode of information of each time of each channel, because the audio-video frequency content of EPG and each channel all obtains in same digital television signal suppliers, be that the introductory information of each program of each channel is for providing the provider of the audio-video frequency content of this channel to provide, can guarantee accuracy and the authority of this introductory information, can guarantee the accuracy of this introductory information and the corresponding relation of channel and time.And then guarantee you the later stage offer accuracy and the authority of information of each time of each channel of user.
Preferably, by the Internet and digital television signal source, obtain EPG information simultaneously.The Internet obtains an EPG, by digital television signal source, obtains the 2nd EPG.Resolve respectively an EPG and the 2nd EPG, obtain the programm name of each each time of channel in an EPG and obtain the programm name of each each time of channel in the 2nd EPG and compare; When identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to an EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores; When not identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to the 2nd EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores.
Comparatively speaking, the introductory information of the channel correlation that the EPG based on the Internet obtains and program is relatively abundanter but EPG renewal in the Internet is slower, comparatively simple but the introductory information of the EPG providing based on digital television signal source Zhong You operator and the channel correlation obtaining based on it and program has more authority.，
When identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to an EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores; When not identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to the 2nd EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores.While not conflicting, according to an EPG, obtain relevant introductory information in an EPG and the 2nd EPG, can guarantee the rich of information.While not conflicting at once, according to the 2nd EPG, obtain relevant introductory information in an EPG and the 2nd EPG, can guarantee the accuracy of information.
Resolve this EPG, can obtain the channel coding of each channel.Then the memory address at radiovisor according to introductory information, at television set, set up an information database, the incidence relation that this information database comprises above-mentioned each channel and time and the memory address of its corresponding information in radiovisor.For example:
| Channel coding | Time | Programm name | Information memory address |
| CCTV1 | 19:00-19:30 | News hookup | C/js/ CCTV 1/XWLB |
| CCTV1 | 19:30-19:50 | Focus | C/js/ CCTV 1/JDFT |
| CCTV2 | 19:00-19:20 | Economic observation | C/js/ CCTV 2/JJGC |
| CCTV2 | 19:20-19:55 | Shopper's paradise | C/js/ CCTV 2/GWTT |
So that the later stage, according to the corresponding relation of this information database, is obtained the memory address of the corresponding information of target channel current time, and then obtain this information, and show.Certainly in this information database, can comprise that program names also can not comprise program names.
Concrete, in channel handoff procedure each time, need to carry out following steps:
Step B1, receiving channels switching command;
Step B2, resolve this channel switching instruction, obtain target channel coding;
The audio frequency and video of step B3, buffering target channel, according to target channel coding and current time, transfer target channel current time audio-video frequency content information and control and show this information
After the audio frequency and video of step B4, this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
The detailed process of each concrete step is as follows:
Step B1, receiving channels switching command;
User can send channel switching instruction to television set by remote controller, also can directly send instruction by touch-screen or the button of display device, or sends channel switching instruction by voice, gesture etc.Can utilize any technological means of the prior art to send channel switching instruction.The channel that contains target channel in this channel switching instruction.
Television set can be accepted this channel switching instruction by corresponding mode.The touch-control of for example accepting user by touch-screen, button obtains, and receives user's voice or gesture, and then obtain channel switching instruction by voice monitoring device or gesture supervising device etc.
The channel that contains target channel in this channel switching instruction.
For example, we will want to watch the program of the 1st channel, and this channel switching instruction at least comprises channel " 1 ".
Step B2, resolve this channel switching instruction, obtain target channel coding.
Television set receives after channel switching instruction, this channel switching instruction is resolved, the channel of the target channel in receiving channels switching command, obtain the corresponding channel coding of channel, this channel coding can be channel name, for example the 1st channel, corresponding to CCTV1 channel, can be determined according to channel " 1 " " CCTV1 channel ".In radiovisor, channel coding may be code, as " CCTV1 " etc.
The audio frequency and video of step B3, buffering target channel, according to target channel coding and current time, transfer target channel current time audio-video frequency content information and show this information.
Obtain after target channel coding, according to channel coding, determine target channel, start to cushion the audio frequency and video of target channel.
According to the current time of this target channel coding and switching channels, according to this information database, obtain the memory address of corresponding information, and then obtain this information simultaneously., as the information of the audio-video frequency content of target channel current time; This is not to emphasize that both trigger time simultaneously, and be that both can walk abreast, carries out.
For example, the information of this each channel is associated with channel coding, the current time 19:10 switching according to the channel coding of CCTV1 and channel, can be at the memory address C/js/ CCTV 1/XWLB that extracts the information of CCTV1 in information database, and then this information.
Get after the information of target channel, control and show this information.
After the audio frequency and video of step B4, this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
After target channel has cushioned, feedback completion status, receives feedback completion status control display and stops at once showing this information, and control the audio frequency and video that start to play this target channel.
Like this, the audio frequency and video buffering course of target channel, once completing, can finish the demonstration of information, plays the audio frequency and video of target channel.Thereby make user's normal tv content of watching target channel as far as possible early
Certainly, after the audio frequency and video of this target channel have cushioned, control and stop showing this information, the audio frequency and video of controlling this target channel of broadcasting also can realize as follows:
This information is play the scheduled time, after this scheduled time, stops showing this information, plays the audio frequency and video of this target channel.This scheduled time is more than or equal to the buffering time used of target channel channel.For example, the buffer time of target channel generally can complete with interior at 2s, and the displaying time that can set information is 2s, and this information shows to come after 2s, and finish information and show, and the audio frequency and video of the broadcasting " CCTV1 " immediately having cushioned.
Preferably, this information can be picture, and the optimal way of its advantage and effect and picture, with consistent in embodiment mono-, repeats no more again.
Above-mentioned channel switching method, not only can be applied in television set, also can be applied in the radiovisors such as Set Top Box, intelligent box.
Meanwhile, the present embodiment provides the present invention that a kind of radiovisor is provided simultaneously, comprising:
Information record cell, for obtain the information of the audio-video frequency content of each time of each channel according to EPG, this information prestores;
Instruction fetch unit, for receiving channels switching command;
Processing unit, according to channel switching instruction, obtains target channel coding;
Indicative control unit, the audio frequency and video of buffering target channel, according to this target channel coding and current time, transfer target channel current time audio-video frequency content information and control and show this information; After the audio frequency and video of this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
Preferably, indicative control unit comprises buffer cell and control unit, and control unit is for according to stating target channel coding and current time, transfer target channel current time audio-video frequency content information and control and show this information; Buffer cell, for cushioning the audio frequency and video of target channel, the audio frequency and video of this target channel have cushioned rear feedback completion status to control unit, and control unit receives after the completion status of control unit feedback and controls and stop showing this information, controls the audio frequency and video of playing this target channel.
Preferably, indicative control unit comprises buffer cell and control unit, and control unit is for according to this target channel coding and current time, transfer target channel current time audio-video frequency content information and control and show this information; Buffer cell, for cushioning the audio frequency and video of target channel; Control unit is controlled this information and is play after the scheduled time and control and stop showing this information, controls the audio frequency and video of playing this target channel.This scheduled time is more than or equal to the buffering time used of target channel channel.
Preferably, this EPG obtains by the Internet.
Preferably, this EPG obtains by digital television signal.
Preferably, this information record cell, for: from the Internet, obtain an EPG, from digital television signal source, obtain the 2nd EPG; Obtain the programm name of each each time of channel in an EPG and obtain the programm name of each each time of channel in the 2nd EPG and compare; When identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to an EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores; When not identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to the 2nd EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores.
Preferably, this information is picture.
Technical scheme in above-mentioned the embodiment of the present application, at least has following technique effect or advantage:
While cushioning target channel audio frequency and video before the audio frequency and video of playing this target channel, transfer the information of the audio-video frequency content of target channel current time, show this information; In the buffering course of the audio frequency and video of target channel, need to complete decoder data exchange between original channel and target channel in transport stream, the decoding of the data of target channel, and the synchronous processing of target channel Voice & Video, all need the time of growing; And this information is pre-stored in radiovisor, the acquisition time of this information is short, and relative data amount is less, and the time of processes and displays will be much smaller than target channel buffer time.Show in advance the information of audio-video frequency content of the current time of ownership goal channel.Make user can judge fast that whether the audio-video frequency content of target channel current time meets the demand of oneself, and then further select.Due to, information is associated with the current time that channel and channel switch simultaneously, compares with embodiment mono-, can better embody the real-time of information.
Embodiment tri-
The present embodiment provides a kind of channel switching method, comprises the following steps
A channel switching method, is applied to, in a television set, comprise the following steps:
Step C1, receiving channels switching command;
Step C2, resolve this channel switching instruction, obtain target channel coding;
The audio frequency and video of step C3, buffering target channel, according to this target channel coding, capture a two field picture of this target channel in real time as information, and control this information of demonstration;
After the audio frequency and video of step C4, this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
Concrete, each step realizes as follows.
Step C1, receiving channels switching command.
User can send channel switching instruction to television set by remote controller, also can directly send instruction by touch-screen or the button of display device, or sends channel switching instruction by voice, gesture etc.Can utilize any technological means of the prior art to send channel switching instruction.The channel that contains target channel in this channel switching instruction.
Television set can be accepted this channel switching instruction by corresponding mode.The touch-control of for example accepting user by touch-screen, button obtains, and receives user's voice or gesture, and then obtain channel switching instruction by voice monitoring device or gesture supervising device etc.The channel that contains target channel in this channel switching instruction.
For example, we will want to watch the program of the 1st channel, and this channel switching instruction at least comprises channel " 1 ".
Step C2, resolve this channel switching instruction, obtain target channel coding.
Television set receives after channel switching instruction, this channel switching instruction is resolved, the channel of the target channel in receiving channels switching command, obtain the corresponding channel coding of channel, this channel coding can be channel name, for example the 1st channel, corresponding to CCTV1 channel, can be determined according to channel " 1 " " CCTV1 channel ".In radiovisor, channel coding may be code, as " CCTV1 " etc.
The audio frequency and video of step C3, buffering target channel, according to this target channel coding, capture a two field picture of this target channel in real time as information, and control this information of demonstration.
Obtain after target channel coding, according to channel coding, determine target channel, start to cushion the audio frequency and video of target channel.
In the process of audio frequency and video of buffering target channel, need to complete successively decoder data exchange between original channel and target channel in transport stream, the decoding of the data of target channel, and the synchronous processing of target channel Voice & Video.In the decode procedure of the data of target channel, need image and voice data to decode, after the view data of target channel is decoded, can be before the synchronous processing of the Voice & Video of target channel, obtain a frame image data of having decoded, the information using this image as target channel shows.And then can be before the synchronous processing of the Voice & Video of target channel, the information of display-object channel in advance.
Preferably, in decode procedure due to the data in target channel, need multiple image decoding data, when the first frame image data of target channel completes after decoding, obtain the data of the first two field picture that this decoding completes, the information using this first two field picture as target channel shows.Owing to obtaining the first two field picture, show, can demonstrate as soon as possible information.
After the audio frequency and video of step C4, this target channel have cushioned, control and stop showing this information, control the audio frequency and video of playing this target channel.
After target channel has cushioned, buffer cell feedback completion status is to the control unit of television set, and control module is controlled display and stopped at once showing this information, and controls the audio frequency and video that start to play this target channel.Like this, after the audio frequency and video buffering course of target channel completes, can finish the demonstration of information, play the audio frequency and video of target channel.Thereby make user's normal tv content of watching target channel as far as possible early.
Certainly, after the audio frequency and video of this target channel have cushioned, stop showing this information, the audio frequency and video of playing this target channel also can realize as follows:
This information is play the scheduled time, after this scheduled time, stops showing this information, plays the audio frequency and video of this target channel.This scheduled time is more than or equal to the data decode of target channel and the total time of audio video synchronization.For example, the data decode of target channel and the total time of audio video synchronization generally can complete with interior at 1.5s, the displaying time that can set information is 1.5s, this information shows to come after 1.5s, finish information and show, and the audio frequency and video of the broadcasting " CCTV1 " immediately having cushioned.
Channel switching method in the present embodiment can be applied in the radiovisors such as television set, Set Top Box.
Meanwhile, the present embodiment provides a kind of radiovisor, comprising:
Instruction fetch unit, for receiving channels switching command;
Processing unit, according to channel switching instruction, obtains target channel coding;
Indicative control unit, for cushioning the audio frequency and video of target channel, according to this target channel coding, captures in real time a two field picture of this target channel as information, and controls this information of demonstration; After the audio frequency and video of this target channel have cushioned, control and stop showing this information, play the audio frequency and video of this target channel.
Preferably, indicative control unit comprises buffer cell and control unit, and control unit, for according to this target channel coding, captures a two field picture of this target channel in real time as information, and controls this information of demonstration; Buffer cell, for cushioning the audio frequency and video of target channel, the audio frequency and video of this target channel have cushioned rear feedback completion status to control unit, and control unit receives after the completion status of control unit feedback and controls and stop showing this information, controls the audio frequency and video of playing this target channel.
Preferably, indicative control unit comprises buffer cell and control unit, and control unit, for according to this target channel coding, captures a two field picture of this target channel in real time as information, and controls this information of demonstration; Buffer cell, for cushioning the audio frequency and video of target channel; Control unit is controlled this information and is play after the scheduled time and control and stop showing this information, controls the audio frequency and video of playing this target channel.This scheduled time is more than or equal to the data decode of target channel and the total time of audio video synchronization.
As above in the audio frequency and video buffering course of this target channel, often need to cushion multiple image, and carry out the synchronous processing of target channel Voice & Video, yet decoding obtains a two field picture, the buffering that does not need the two field picture after waiting for, and the synchronous processing of Voice & Video, the time needing is relatively less.Before having cushioned with the audio frequency and video in target channel, the information of the audio-video frequency content of display-object channel.Make user judge that fast whether the content of the audio frequency and video of target channel meets the demand of oneself, and then further select by this information.
Radiovisor in this enforcement, can be television set, Set Top Box, intelligent box etc., in this no limit.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from this present invention
Bright spirit and scope.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (14)
1. a channel switching method, is applied to a radiovisor, comprises the information of obtaining the audio-video frequency content of each channel according to EPG, and the step of the described information that prestores is further comprising the steps of:
Receiving channels switching command;
Resolve described channel switching instruction, obtain target channel coding;
The audio frequency and video of buffering target channel, according to described target channel coding, transfer described information and control the described information of demonstration;
After the audio frequency and video of described target channel have cushioned, control and stop showing described information, control the audio frequency and video of playing described target channel.
2. channel switching method as claimed in claim 1, it is characterized in that, according to EPG, obtain the information of the audio-video frequency content of each channel, the step of the described information that prestores is specially: according to EPG, obtain the information of the audio-video frequency content of each time of each channel, described information prestores
The audio frequency and video of buffering target channel, according to described target channel coding, transfer described information and show that the step of described information is specially:
The audio frequency and video of buffering target channel, according to target channel coding and current time, transfer the described information of target channel and control the described information of demonstration.
3. channel switching method as claimed in claim 1 or 2, is characterized in that, described EPG obtains by the Internet.
4. channel switching method as claimed in claim 1 or 2, is characterized in that, described EPG obtains by digital television signal.
5. channel switching method as claimed in claim 2, is characterized in that,
From the Internet, obtain an EPG, from digital television signal source, obtain the 2nd EPG;
According to EPG, obtain the information of the audio-video frequency content of each time of each channel, the step of the described information that prestores is specially:
Obtain the programm name of each each time of channel in an EPG and obtain the programm name of each each time of channel in the 2nd EPG and compare;
When identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to an EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores; When not identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to the 2nd EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores.
6. channel switching method as claimed in claim 1 or 2, is characterized in that, described information is picture.
7. a channel switching method, is applied to a radiovisor, comprises the following steps:
Receiving channels switching command;
Resolve described channel switching instruction, obtain target channel coding;
The audio frequency and video of buffering target channel, according to described target channel coding, capture a two field picture of described target channel in real time as information, and control the described information of demonstration;
After the audio frequency and video of described target channel have cushioned, control and stop showing described information, play the audio frequency and video of described target channel.
8. a radiovisor, comprising:
Information record cell, for obtain the information of the audio-video frequency content of each channel according to EPG, described information prestores;
Instruction fetch unit, for receiving channels switching command;
Processing unit, according to channel switching instruction, obtains target channel coding;
Indicative control unit, for cushioning the audio frequency and video of target channel, according to described target channel coding, transfers described information and controls the described information of demonstration; After the audio frequency and video of described target channel have cushioned, control and stop showing described information, control the audio frequency and video of playing described target channel.
9. radiovisor as claimed in claim 8, is characterized in that, described information record cell, and for obtain the information of the audio-video frequency content of each time of each channel according to EPG, described information prestores;
Described indicative control unit, for cushioning the audio frequency and video of target channel, according to described target channel coding and current time, transfers described information and controls the described information of demonstration; After the audio frequency and video of described target channel have cushioned, control and stop showing described information, control the audio frequency and video of playing described target channel.
10. radiovisor as claimed in claim 8 or 9, is characterized in that, described EPG obtains by the Internet.
11. radiovisors as claimed in claim 8 or 9, is characterized in that, described EPG obtains by digital television signal.
12. as claim 9 as described in radiovisor, it is characterized in that, described information record cell, for:
From the Internet, obtain an EPG, from digital television signal source, obtain the 2nd EPG;
Obtain the programm name of each each time of channel in an EPG and obtain the programm name of each each time of channel in the 2nd EPG and compare;
When identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to an EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores; When not identical with the programm name of same same time of channel in the 2nd EPG in an EPG, according to the 2nd EPG, obtain described channel in the information of the audio-video frequency content of described time, described information prestores.
13. radiovisors as claimed in claim 8 or 9, is characterized in that, described information is picture.
14. 1 kinds of radiovisors, comprising:
Instruction fetch unit, for receiving channels switching command;
Processing unit, according to channel switching instruction, obtains target channel coding;
Indicative control unit, for cushioning the audio frequency and video of target channel, according to described target channel coding, captures in real time a two field picture of described target channel as information, and controls the described information of demonstration; After the audio frequency and video of described target channel have cushioned, control and stop showing described information, play the audio frequency and video of described target channel.
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