CN1309246C - Access device and realizing method based on CI interface of ground and satellite diyital television - Google Patents
Access device and realizing method based on CI interface of ground and satellite diyital television Download PDFInfo
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- CN1309246C CN1309246C CNB2004100515409A CN200410051540A CN1309246C CN 1309246 C CN1309246 C CN 1309246C CN B2004100515409 A CNB2004100515409 A CN B2004100515409A CN 200410051540 A CN200410051540 A CN 200410051540A CN 1309246 C CN1309246 C CN 1309246C
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Abstract
The present invention relates to a ground and satellite digital television access device based on a CI interface and a realization method thereof. A digital television receiving card and a CAM card are respectively accessed into a signal router through a CI interface, the CI interface is connected with a DVB-T or DVB-S receiving unit, and signals are loaded into a TV output interface through the signal router and an MPEG2 decoding module. The realization method comprises the steps that after a DVB-T or DVB-S receiving card is inserted into the CI interface, an STB detects the insertion of the receiving card through the intelligent recognition mechanism of the CI interface and necessarily configures the receiving card; DVB-T or DVB-S signals are accessed through the selection of the signal router; after a channel is decoded and demodulated, the signals are processed by another signal router, the router forwards scrambled code streams to a CAM module through the CI interface, filters and descrambles the scrambled code streams, and sends the descrambled code streams back to the STB, and an information source is decoded; the original audio information and the original video information are obtained through an information source decoding unit in the STB and displayed in a TV.
Description
Technical field
The present invention relates to digital information transmission technical field, relate more specifically to a kind of based on the ground of CI interface and access device and its implementation of satellite digital TV.According to thought of the present invention, not only can be used for ground, satellite, wired, microwave and other transmission medium, also can be used for data broadcasting, the Internet and other wideband multimedia message transmission and integrated data business field.
Background technology
In the access way of existing digital television broadcasting, DVB-C (cable digital TV broadcasting), DVB-T (ground digital television broadcast), three kinds of patterns of DVB-S (digital video broadcast-satellite) adopt independently separately, and set-top box (STB) technology realizes, its access way is incompatible, the terminal use changes the pattern of digital television broadcasting if desired, just must change whole set-top box, expense costliness.Can't realize the compound access of above-mentioned three kinds of patterns.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point of the prior art and provide a kind of and broadcast on the basis of set-top box technique at existing cable digital TV, utilize the universal digital TV interface to insert the interface as channel, realize ground digital television broadcast, the channel demodulation decoding of digital video broadcast-satellite, the route of rational control signal, the module of the source coding in the abundant multiplexing machine top box, the switching of system pattern is more convenient and transparent for the user, have very strong compatibility and flexibility, realize the compound access of above-mentioned three kinds of broadcast system patterns with the cost of minimum and configuration flexibly, for the exploitation of the realization of digital television broadcasting and value-added service provide wide platform based on the ground of CI interface and access device and its implementation of satellite digital TV.
Purpose of the present invention can reach by following measure:
This based on the ground of CI interface and the access device of satellite digital TV, its special character is:
This access device includes:
One Digital Television receiving card inserts signal router 1 via universal digital TV interface 1, is used for digital television signal is carried out the demodulating and decoding of channel;
One condition receiving card inserts signal routers 2 through universal digital TV interface 2, is used for the selection information according to the user, to the code stream of scrambling filter, control word deciphering, scramble process;
One signal router 1 is connected with cable digital TV broadcast singal passage, universal digital TV interface 1 and signal router 2 respectively, is used for the configuring condition according to Digital Television receiving card, and receiving card and cable TV signal are carried out Route Selection;
One signal router 2, be connected with MPEG2 decoder module, signal router 1 and universal digital TV interface 2 respectively, be used for selection information according to the user, the code stream of selected scrambling is transmitted to the condition receiving card module by universal digital TV interface 2, simultaneously the code stream behind the descrambling is transmitted back in the set-top box;
One MPEG2 decoder module is arranged at the signal source coding that is used between TV output interface and the signal router 2 via router unit and handles;
One cable TV interface is connected with cable digital TV broadcast reception unit, and set-top box inserts digital catv signal by this interface.
This Digital Television receiving card includes:
One ground digital television broadcast or digital video broadcast-satellite receiving element, be arranged between universal digital TV interface and the ARM micro-control unit, be used for the digital television signal of ground digital television broadcast or digital video broadcast-satellite is carried out the demodulating and decoding of channel;
One ARM micro-control unit is arranged between ground digital television broadcast or digital video broadcast-satellite receiving element and the universal digital TV interface, is used for the operating state of whole receiving card is controlled;
One universal digital TV interface CI unit is connected with ground digital television broadcast or digital video broadcast-satellite receiving element, ARM micro-control unit and Digital Television set-top box respectively, is used to provide the data channel of receiving card and set-top box.
This ground digital television broadcast or digital video broadcast-satellite receiving element include:
One tuner is arranged between antenna and the A/D analog-to-digital conversion, and the data that receive from antenna become analog intermediate frequency signal through this, amplifies after A/D converts digital signal to;
One crystal oscillator is arranged between A/D modulus and the sampling clock, is used to control sampling clock, and its skew is estimated to obtain by the sampling clock sync section;
One real complex transformation is arranged between A/D modulus and the FFT fast fourier transform, and wherein data one tunnel are done the output that the control of AGC automatic gain removes to control tuner after the A/D analog-to-digital conversion, and another road is transformed to the required complex signal of FFT fast fourier transform through this;
One frequency offset correction, be arranged between the real complex transformation of R/C, FFT fast fourier transform and the sampling clock, the interior known pilot of the band that its sync section utilizes time domain protection interval and frequency domain end to insert, estimate and the definite time domain FFT fast fourier transform windows position of tracking, estimate note simultaneously because the frequency deviation that down-conversion causes is gone up in transmitting-receiving, through overdeviation control unit tracking frequency offset, deliver to digital frequency offset correction unit, data are flow to line frequency proofread and correct partially;
One phasing is arranged between FFT fast fourier transform and the channel estimating, through frequency offset correction control unit tracking frequency offset, delivers to digital frequency offset correction unit, and skew is proofreaied and correct to the residual phase behind the frequency offset correction;
One sampling clock, respectively with crystal oscillator, the decoding of TPS transmission parameter, FFT fast fourier transform, frequency deviation and frequency deviation with real/be electrically connected between multiple, estimate that synchronously obtaining receiving and dispatching the sampling crystal oscillator can not mate the sampling clock error of bringing fully, give VCXO through the digital PLL phase-locked loop, make the transmitting-receiving sampling clock synchronous, the data flow behind frequency offset correction is done the OFDM demodulation in the FFT fast fourier transform;
The decoding of one TPS transmission parameter, be arranged at sampling clock phasing and FFT fast fourier transform line between, frequency-region signal after demodulation obtains a frequency domain symbol type and a frame synchronization position respectively by sampling clock synchronization module and TPS transmission parameter decoding module, simultaneously the frequency offset correction module estimates to obtain the phase place tilt value of the linear growth that FFT window position deviation brings, the sampling clock synchronization module estimates to obtain the common phase deflection that timing, frequency deviation, analogue device cause, linear growth phase place, these two kinds of phase places of common phase are proofreaied and correct;
One channel estimating is arranged between phasing and Viterbi measure, and the data after channel estimating is proofreaied and correct are eliminated the influence of channel multi-path through channel estimating and equilibrium treatment;
One dimension is special than measuring, and between being arranged at channel estimating and quantizing, data are passed through this Viterbi and measured, quantize, and the decode procedure of contrary of encoding enters and make a start;
One decoder module, interweave in separating by quantize inserting successively, Viterbi decoding, RS sign indicating number synchronously, deconvolution interweaves, RS decodes, descrambling, obtains the TS code stream at last.
This universal digital TV interface CI unit pack contains:
One CIS characteristic information memory block, the structural arrangements information that is used to store receiving card;
One COR configuration information memory block is used for the initial configuration to receiving card, and main frame is after reading CIS information, according to the resource that self can provide reception is sticked into capable reasonable configuration, its configuration words will be written back to this district, after receiving card is configured, just can begin the operation of channel demodulation decoding;
One I/O MEMORY interface data memory block provides a kind of interaction mechanism, and main frame and receiving card are communication interface by the support of CI agreement with I/O MEMORY, real-time interaction data information.
This ARM micro-control unit includes:
One ARM microcontroller is connected with clock circuit, interrupt vector controller, FLASH memory, RAM memory respectively, is used for the operating state of receiving card is controlled, and is responsible for the foundation of receiving card and set-top box upper layer communication agreement;
One CLOCK clock circuit is used to the operating frequency that provides stable;
One VIC interrupt vector controller provides the support of receiving card interrupt mechanism;
One FLASH memory is used to store personal code work;
One RAM memory is used to provide the code during the program running and the memory space of data.
Purpose of the present invention can also reach by following measure:
This based on the ground of CI interface and the implementation method of satellite digital TV, its special character is that it comprises following steps:
(1) when the CI interface is sky, signal router 1 gating cable digital TV broadcast singal passage, set-top box inserts digital catv signal by the cable TV interface, signal via cable digital TV broadcast channel demodulating and decoding unit, signal router unit, MPEG2 source coding cell processing after, send into the TV output interface and show;
(2) after the universal digital TV interface inserted ground digital television broadcast or digital video broadcast-satellite receiving card, by the Intelligent Recognition mechanism of universal digital TV interface standard, set-top box detected the insertion of receiving card; Again by decoding to CIS receiving card characteristic information memory area configuration information, set-top box has obtained the cognition to the receiving card characteristic, set-top box sticks into the control of capable configuration information memory block and router to reception afterwards, just can carry out the reception of ground digital television broadcast or digital video broadcast-satellite digital television signal;
(3) after the channel-decoding demodulation is finished, signal entering signal router two resume module, the router two module is transmitted to CAM condition receiving card module to the code stream of scrambling by the universal digital TV interface, selection information according to the user, condition receiving card to the code stream of scrambling filter, after the control word deciphering, scramble process, code stream behind the descrambling is passed back to set-top box by the universal digital TV interface, carry out the processing of source coding;
(4) by the source coding unit in the set-top box, obtain original audio/video information, send into TV and show.
It further comprises following steps:
(1) finishes demodulation, the decoding function of channel by Digital Television receiving card;
(2) signal is via PCMCIA PCMCIA (personal computer memory card international association) interface, and under the support of bottom layer driving software, MPEG source coding program is carried out software decode to code stream and handled;
(3) code stream is delivered to the man-machine interface program display.
Digital Television receiving card and PC with PCMCIA PCMCIA (personal computer memory card international association) interface are platform, the Digital Television reception programme of a kind of novelty of structure, it is made of hardware and software, hardware comprises the adapter of a PCI peripheral interface to PCMCIA PCMCIA (personal computer memory card international association) interface, software comprises the design of drive software and the design of upper application software, wherein, drive software is used to provide the interface between Digital Television receiving card and the upper application software, support to digital tv receiver card bottom software is provided, upper application software is divided into two modules, with the MPEG source coding module of software mode realization and the Application Program Interface module that is used to realize user control interface, its information source flow process: signal is via PCMCIA PCMCIA (personal computer memory card international association) interface, the PCI peripheral interface is to PCMCIA PCMCIA (personal computer memory card international association) transition card, the PCI peripheral interface carries out PC, under the support of bottom layer driving software, MPEG source coding program is carried out the software decode processing to code stream, delivers to the man-machine interface program display at last.
The present invention has following advantage compared to existing technology:
1. have very strong compatibility and flexibility.
2. on the basis that fully keeps existing source coding module realization, make full use of the CI interface of digital TV set-top box, can realize the access of ground and satellite digital TV flexibly.
3. the switching of system pattern is more convenient and transparent for the user.
4. with the source coding and the man-machine interface program of software mechanism realization, software function can obtain safeguarding and upgrading to have the flexibility of height easily.
5. effectively reduced the cost of system.
Description of drawings
Fig. 1 is the overall construction drawing of ground digital television broadcast (or digital video broadcast-satellite) implementation that the present invention is based on the universal digital TV interface.
Fig. 2 is ground digital television broadcast of the present invention (or digital video broadcast-satellite) receiving card cut-away view.
Fig. 3 is a universal digital TV interface cut-away view of the present invention.
Fig. 4 is ground digital television broadcast of the present invention or digital video broadcast-satellite receiving element cut-away view.
Fig. 5 is the cut-away view of ARM micro-control unit of the present invention.
Fig. 6 the present invention is based on the ground of universal digital TV interface of cable digital TV speech amplifier top box and the access implementation structure schematic diagram of satellite digital TV.
Fig. 7 is based on the access implementation structure schematic diagram of ground digital television broadcast (or digital video broadcast-satellite) of the PCMCIA PCMCIA (personal computer memory card international association) interface of PC.
Fig. 8 is based on the access implementation structure schematic diagram of the ground digital television broadcast (or digital video broadcast-satellite) of movable terminations such as portable PC or PDA.
Embodiment
The present invention is further detailed in conjunction with the accompanying drawings below:
Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 show first embodiment of the present invention.
This is based on the ground of universal digital TV interface of cable digital TV speech amplifier top box and access device and its implementation of satellite digital TV.
This access device includes:
One Digital Television receiving card inserts wired digital television broadcasting set-top box via universal digital TV interface 1, is used for digital television signal is carried out the demodulating and decoding of channel;
One condition receiving card inserts signal routers 2 through universal digital TV interface 2, inserts wired digital television broadcasting set-top box, is used for the selection information according to the user, to the code stream of scrambling filter, control word deciphering, scramble process;
Should comprise following steps based on the ground of universal digital TV interface and the implementation method of satellite digital TV:
(1) at the universal digital TV interface when being empty, set-top box inserts digital catv signal by the cable TV interface, signal via cable digital TV broadcast channel demodulating and decoding unit, send into the TV output interface and show;
(2) after the universal digital TV interface inserted ground digital television broadcast or digital video broadcast-satellite receiving card, by the Intelligent Recognition mechanism of universal digital TV interface standard, set-top box detected the insertion of receiving card; Again by decoding to CIS receiving card characteristic information memory area configuration information, set-top box has obtained the cognition to the receiving card characteristic, set-top box sticks into the control of capable configuration information memory block and router to reception afterwards, just can carry out the reception of ground digital television broadcast or digital video broadcast-satellite digital television signal;
(3) after the channel-decoding demodulation is finished, the code stream of its scrambling is transmitted to CAM condition receiving card module by the universal digital TV interface, selection information according to the user, condition receiving card to the code stream of scrambling filter, after the control word deciphering, scramble process, code stream behind the descrambling is passed back to set-top box by the universal digital TV interface, carry out the processing of source coding;
(4) by the source coding unit in the set-top box, obtain original audio/video information, send into TV and show.
This embodiment is on the basis that fully keeps existing source coding module realization, the universal digital TV interface that has made full use of digital TV set-top box is a transmission channel, source coding module in the reasonable multiplexing cable digital TV speech amplifier top box and to the support function of condition receiving card interface mechanism, the access way of structure ground digital television broadcast, digital video broadcast-satellite can realize the flexible switching of digital TV receiver formula and the hardware and software platform support that value-added service is developed.
Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 7 show second embodiment of the present invention.
This is based on the ground of pcmcia interface of PC and access device and its implementation of satellite digital TV.
This access device includes:
One Digital Television receiving card inserts signal router 1 via universal digital TV interface 1, is used for digital television signal is carried out the demodulating and decoding of channel;
One condition receiving card inserts signal routers 2 through universal digital TV interface 2, is used for the selection information according to the user, to the code stream of scrambling filter, control word deciphering, scramble process;
One signal router 1 is connected with cable digital TV broadcast singal passage, universal digital TV interface 1 and signal router 2 respectively, is used for the configuring condition according to Digital Television receiving card, and receiving card and cable TV signal are carried out Route Selection;
One signal router 2, be connected with MPEG2 decoder module, signal router 1 and universal digital TV interface 2 respectively, be used for selection information according to the user, the code stream of selected scrambling is transmitted to the condition receiving card module by the universal digital TV interface, simultaneously the code stream behind the descrambling is transmitted back in the set-top box;
One MPEG2 decoder module is arranged at the signal source coding that is used between TV output interface and the signal router 2 via router unit and handles;
One cable TV interface is connected with cable digital TV broadcast reception unit, and set-top box inserts digital catv signal by this interface.
This Digital Television receiving card comprises:
One ground digital television broadcast or a digital video broadcast-satellite receiving element are arranged between universal digital TV interface and the ARM micro-control unit, are used for the digital television signal of ground digital television broadcast or digital video broadcast-satellite is carried out demodulating and decoding;
One ARM micro-control unit is arranged between ground digital television broadcast or digital video broadcast-satellite receiving element and the universal digital TV interface, is used for the operating state of whole receiving card is controlled;
One universal digital TV interface CI unit is connected with ground digital television broadcast or digital video broadcast-satellite receiving element, ARM micro-control unit and Digital Television set-top box respectively, is used to provide the data channel of receiving card and set-top box.
This ground digital television broadcast or digital video broadcast-satellite receiving element include:
One tuner is arranged between antenna and the A/D analog-to-digital conversion, and the data that receive from antenna become analog intermediate frequency signal through this, amplifies after A/D converts digital signal to;
One crystal oscillator is arranged between A/D modulus and the sampling clock, is used to control sampling clock, and its skew is estimated to obtain by the sampling clock sync section;
One real complex transformation is arranged between A/D modulus and the FFT fast fourier transform, and wherein data one tunnel are done the output that the control of AGC automatic gain removes to control tuner after the A/D analog-to-digital conversion, and another road is transformed to the required complex signal of FFT fast fourier transform through this;
One frequency offset correction, be arranged between the real complex transformation of R/C, FFT fast fourier transform and the sampling clock, the interior known pilot of the band that its sync section utilizes time domain protection interval and frequency domain end to insert, estimate and the definite time domain FFT fast fourier transform windows position of tracking, estimate note simultaneously because the frequency deviation that down-conversion causes is gone up in transmitting-receiving, through overdeviation control unit tracking frequency offset, deliver to digital frequency offset correction unit, data are flow to line frequency proofread and correct partially;
One phasing is arranged between FFT fast fourier transform and the channel estimating, through frequency offset correction control unit tracking frequency offset, delivers to digital frequency offset correction unit, and skew is proofreaied and correct to the residual phase behind the frequency offset correction;
One sampling clock, respectively with crystal oscillator, transmission parameter decoding, FFT fast fourier transform, frequency deviation and frequency deviation with real/be electrically connected between multiple, estimate that synchronously obtaining receiving and dispatching the sampling crystal oscillator can not mate the sampling clock error of bringing fully, give VCXO through the digital PLL phase-locked loop, make the transmitting-receiving sampling clock synchronous, the data flow behind frequency offset correction is done the OFDM demodulation in the FFT fast fourier transform;
The decoding of one TPS transmission parameter, be arranged at sampling clock phasing and FFT fast fourier transform line between, frequency-region signal after demodulation obtains a frequency domain symbol type and a frame synchronization position respectively by sampling clock synchronization module and the decoding of TPS transmission parameter, simultaneously the frequency offset correction module estimates to obtain the phase place tilt value of the linear growth that FFT window position deviation brings, the sampling clock synchronization module estimates to obtain the common phase deflection that timing, frequency deviation, analogue device cause, linear growth phase place, these two kinds of phase places of common phase are proofreaied and correct;
One channel estimating is arranged between phasing and Viterbi measure, and the data after channel estimating is proofreaied and correct are eliminated the influence of channel multi-path through channel estimating and equilibrium treatment;
One dimension is special than measuring, and between being arranged at channel estimating and quantizing, data are passed through this Viterbi and measured, quantize, and the decode procedure of contrary of encoding enters and make a start;
One decoder module, interweave in separating by quantize inserting successively, Viterbi decoding, RS sign indicating number synchronously, deconvolution interweaves, RS decodes, descrambling, obtains the TS code stream at last.
This universal digital TV interface CI unit pack contains:
One CIS characteristic information memory block, the structural arrangements information that is used to store receiving card;
One COR configuration information memory block is used for the initial configuration to receiving card, and main frame is after reading CIS information, according to the resource that self can provide reception is sticked into capable reasonable configuration, its configuration words will be written back to this district, after receiving card is configured, just can begin the operation of channel demodulation decoding;
One I/O MEMORY interface data memory block provides a kind of interaction mechanism, and main frame and receiving card are communication interface by the support of CI agreement with I/O MEMORY, real-time interaction data information.
This ARM micro-control unit includes:
One ARM microcontroller is connected with clock circuit, interrupt vector controller, FLASH memory, RAM memory respectively, is used for the operating state of receiving card is controlled, and is responsible for the foundation of receiving card and set-top box upper layer communication agreement;
One CLOCK clock circuit is used to the operating frequency that provides stable;
One VIC interrupt vector controller provides the support of receiving card interrupt mechanism;
One FLASH memory is used to store personal code work;
One RAM memory is used to provide the code during the program running and the memory space of data.
Should comprise following steps based on the ground of CI interface and the implementation method of satellite digital TV:
(1) when the CI interface is sky, signal router 1 gating cable digital TV broadcast singal passage, set-top box inserts digital catv signal by the cable TV interface, signal via cable digital TV broadcast channel demodulating and decoding unit, signal router unit, MPEG2 source coding cell processing after, send into the TV output interface and show;
(2) after the universal digital TV interface inserted ground digital television broadcast or digital video broadcast-satellite receiving card, by the Intelligent Recognition mechanism of universal digital TV interface standard, set-top box detected the insertion of receiving card; Again by decoding to CIS receiving card characteristic information memory area configuration information, set-top box has obtained the cognition to the receiving card characteristic, set-top box sticks into the control of capable configuration information memory block and router to reception afterwards, just can carry out the reception of ground digital television broadcast or digital video broadcast-satellite digital television signal;
(3) after the channel-decoding demodulation is finished, signal entering signal router two resume module, the router two module is transmitted to CAM condition receiving card module to the code stream of scrambling by the universal digital TV interface, selection information according to the user, condition receiving card to the code stream of scrambling filter, after the control word deciphering, scramble process, code stream behind the descrambling is passed back to set-top box by the universal digital TV interface, carry out the processing of source coding;
(4) by the source coding unit in the set-top box, obtain original audio/video information, send into TV and show.
It further comprises following steps:
(1) finishes demodulation, the decoding function of channel by Digital Television receiving card;
(2) signal is via PCMCIA PCMCIA (personal computer memory card international association) interface, and under the support of bottom layer driving software, MPEG source coding program is carried out software decode to code stream and handled;
(3) code stream is delivered to the man-machine interface program display.
Digital Television receiving card and PC with PCMCIA PCMCIA (personal computer memory card international association) interface are platform, the Digital Television reception programme of a kind of novelty of structure, it is made of hardware and software, hardware comprises the adapter of a PCI peripheral interface to PCMCIA PCMCIA (personal computer memory card international association) interface, software comprises the design of drive software and the design of upper application software, wherein, drive software is used to provide the interface between Digital Television receiving card and the upper application software, support to digital tv receiver card bottom software is provided, upper application software is divided into two modules, with the MPEG source coding module of software mode realization and the Application Program Interface module that is used to realize user control interface, its information source flow process: signal is via PCMCIA PCMCIA (personal computer memory card international association) interface, the PCI peripheral interface is to PCMCIA PCMCIA (personal computer memory card international association) transition card, the PCI peripheral interface carries out PC, under the support of bottom layer driving software, MPEG source coding program is carried out the software decode processing to code stream, delivers to the man-machine interface program display at last.
Be receiving platform with the PC that widely uses, the reception programme of structure Digital Television, with low cost, and have very strong novelty and practicality.With source coding and the man-machine interface program that software mechanism is realized, software function can obtain safeguarding and upgrading to have the flexibility of height easily.
Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 8 show the 3rd embodiment of the present invention.
This is based on the ground of movable terminations such as portable PC or PDA and access device and its implementation of satellite digital TV.
This access device includes:
One Digital Television receiving card inserts signal router 1 via universal digital TV interface 1, is used for digital television signal is carried out the demodulating and decoding of channel;
One condition receiving card inserts signal routers 2 through universal digital TV interface 2, is used for the selection information according to the user, to the code stream of scrambling filter, control word deciphering, scramble process;
One signal router 1 is connected with cable digital TV broadcast singal passage, universal digital TV interface 1 and signal router 2 respectively, is used for the configuring condition according to Digital Television receiving card, and receiving card and cable TV signal are carried out Route Selection;
One signal router 2, be connected with MPEG2 decoder module, signal router 1 and universal digital TV interface 2 respectively, be used for selection information according to the user, the code stream of selected scrambling is transmitted to the condition receiving card module by the universal digital TV interface, simultaneously the code stream behind the descrambling is transmitted back in the set-top box;
One MPEG2 decoder module is arranged at the signal source coding that is used between TV output interface and the signal router 2 via router unit and handles;
One cable TV interface is connected with cable digital TV broadcast reception unit, and set-top box inserts digital catv signal by this interface.
This Digital Television receiving card comprises:
One ground digital television broadcast or a digital video broadcast-satellite receiving element are arranged between universal digital TV interface and the ARM micro-control unit, are used for the digital television signal of ground digital television broadcast or digital video broadcast-satellite is carried out demodulating and decoding;
One ARM micro-control unit is arranged between ground digital television broadcast or digital video broadcast-satellite receiving element and the universal digital TV interface, is used for the operating state of whole receiving card is controlled;
One universal digital TV interface CI unit is connected with ground digital television broadcast or digital video broadcast-satellite receiving element, ARM micro-control unit and Digital Television set-top box respectively, is used to provide the data channel of receiving card and set-top box.
This ground digital television broadcast or digital video broadcast-satellite receiving element include:
One tuner is arranged between antenna and the A/D analog-to-digital conversion, and the data that receive from antenna become analog intermediate frequency signal through this, amplifies after A/D converts digital signal to;
One crystal oscillator is arranged between A/D modulus and the sampling clock, is used to control sampling clock, and its skew is estimated to obtain by the sampling clock sync section;
One real complex transformation is arranged between A/D modulus and the FFT fast fourier transform, and wherein data one tunnel are done the output that the control of AGC automatic gain removes to control tuner after the A/D analog-to-digital conversion, and another road is transformed to the required complex signal of FFT fast fourier transform through this;
One frequency offset correction, be arranged between the real complex transformation of R/C, FFT fast fourier transform and the sampling clock, the interior known pilot of the band that its sync section utilizes time domain protection interval and frequency domain end to insert, estimate and the definite time domain FFT fast fourier transform windows position of tracking, estimate note simultaneously because the frequency deviation that down-conversion causes is gone up in transmitting-receiving, through overdeviation control unit tracking frequency offset, deliver to digital frequency offset correction unit, data are flow to line frequency proofread and correct partially;
One phasing is arranged between FFT fast fourier transform and the channel estimating, through frequency offset correction control unit tracking frequency offset, delivers to digital frequency offset correction unit, and skew is proofreaied and correct to the residual phase behind the frequency offset correction;
One sampling clock, respectively with crystal oscillator, the decoding of TPS transmission parameter, FFT fast fourier transform, frequency deviation and frequency deviation with real/be electrically connected between multiple, estimate that synchronously obtaining receiving and dispatching the sampling crystal oscillator can not mate the sampling clock error of bringing fully, give VCXO through the digital PLL phase-locked loop, make the transmitting-receiving sampling clock synchronous, the data flow behind frequency offset correction is done the OFDM demodulation in the FFT fast fourier transform;
The decoding of one TPS transmission parameter, be arranged at sampling clock phasing and FFT fast fourier transform line between, frequency-region signal after demodulation obtains a frequency domain symbol type and a frame synchronization position respectively by sampling clock synchronization module and TPS transmission parameter decoding module, simultaneously the frequency offset correction module estimates to obtain the phase place tilt value of the linear growth that FFT window position deviation brings, the sampling clock synchronization module estimates to obtain the common phase deflection that timing, frequency deviation, analogue device cause, linear growth phase place, these two kinds of phase places of common phase are proofreaied and correct;
One channel estimating is arranged between phasing and Viterbi measure, and the data after channel estimating is proofreaied and correct are eliminated the influence of channel multi-path through channel estimating and equilibrium treatment;
One dimension is special than measuring, and between being arranged at channel estimating and quantizing, data are passed through this Viterbi and measured, quantize, and the decode procedure of contrary of encoding enters and make a start;
One decoder module, interweave in separating by quantize inserting successively, Viterbi decoding, RS sign indicating number synchronously, deconvolution interweaves, RS decodes, descrambling, obtains the TS code stream at last.
This universal digital TV interface CI unit pack contains:
One CIS characteristic information memory block, the structural arrangements information that is used to store receiving card;
One COR configuration information memory block is used for the initial configuration to receiving card, and main frame is after reading CIS information, according to the resource that self can provide reception is sticked into capable reasonable configuration, its configuration words will be written back to this district, after receiving card is configured, just can begin the operation of channel demodulation decoding;
One I/O MEMORY interface data memory block provides a kind of interaction mechanism, and main frame and receiving card are communication interface by the support of CI agreement with I/O MEMORY, real-time interaction data information.
This ARM micro-control unit includes:
One ARM microcontroller is connected with clock circuit, interrupt vector controller, FLASH memory, RAM memory respectively, is used for the operating state of receiving card is controlled, and is responsible for the foundation of receiving card and set-top box upper layer communication agreement;
One CLOCK clock circuit is used to the operating frequency that provides stable;
One VIC interrupt vector controller provides the support of receiving card interrupt mechanism;
One FLASH memory is used to store personal code work;
One RAM memory is used to provide the code during the program running and the memory space of data.
Should comprise following steps based on the ground of universal digital TV interface and the implementation method of satellite digital TV:
(1) when the universal digital TV interface is sky, signal router 1 gating cable digital TV broadcast singal passage, set-top box inserts digital catv signal by the cable TV interface, signal via cable digital TV broadcast channel demodulating and decoding unit, signal router unit, MPEG2 source coding cell processing after, send into the TV output interface and show;
(2) after the universal digital TV interface inserted ground digital television broadcast or digital video broadcast-satellite receiving card, by the Intelligent Recognition mechanism of universal digital TV interface standard, set-top box detected the insertion of receiving card; Again by decoding to CIS receiving card characteristic information memory area configuration information, set-top box has obtained the cognition to the receiving card characteristic, set-top box sticks into the control of capable configuration information memory block and router to reception afterwards, just can carry out the reception of ground digital television broadcast or digital video broadcast-satellite digital television signal;
(3) after the channel-decoding demodulation is finished, signal entering signal router two resume module, the router two module is transmitted to CAM condition receiving card module to the code stream of scrambling by the universal digital TV interface, selection information according to the user, condition receiving card to the code stream of scrambling filter, after the control word deciphering, scramble process, code stream behind the descrambling is passed back to set-top box by the CI interface, carry out the processing of source coding;
(4) by the source coding unit in the set-top box, obtain original audio/video information, send into TV and show.
It further comprises following steps:
(1) finishes demodulation, the decoding function of channel by Digital Television receiving card;
(2) signal is via PCMCIA PCMCIA (personal computer memory card international association) interface, and under the support of bottom layer driving software, MPEG source coding program is carried out software decode to code stream and handled;
(3) code stream is delivered to the man-machine interface program display.
This embodiment is a platform with Digital Television receiving card and portable terminal, has constructed the terminal receiving equipment of Digital Television.Can make full use of built-in PCMCIA PCMCIA (personal computer memory card international association) expansion interfaces such as portable PC, realize necessary UDI design, structure Digital Television receiving card is communicated by letter with terminal equipment.At specific portable use, realize the design of source coding and man-machine interface program, realized realizing flexibly the removable receive mode of Digital Television.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to the covering scope of claim of the present invention.
Claims (8)
1. one kind based on the ground of CI interface and the access device of satellite digital TV, it is characterized in that:
This access device includes:
One Digital Television receiving card inserts signal router 1 via universal digital TV interface 1, is used for digital television signal is carried out demodulating and decoding;
One condition receiving card inserts signal routers 2 through universal digital TV interface 2, is used for the selection information according to the user, to the code stream of scrambling filter, control word deciphering, scramble process;
One signal router 1 is connected with cable digital TV broadcast singal passage, universal digital TV interface 1 and signal router 2 respectively, according to the configuring condition of Digital Television receiving card, receiving card and cable TV signal is carried out Route Selection;
One signal router 2, be connected with MPEG2 decoder module, signal router 1 and universal digital TV interface 2 respectively, be used for selection information according to the user, the code stream of selected scrambling is transmitted to the condition receiving card module by the universal digital TV interface, simultaneously the code stream behind the descrambling is transmitted back in the set-top box;
One MPEG2 decoder module is arranged at the signal source coding that is used between TV output interface and the signal router 2 via router unit and handles;
One cable TV interface is connected with cable digital TV broadcast reception unit, and set-top box inserts digital catv signal by this interface.
2. according to claim 1 based on the ground of CI interface and the access device of satellite digital TV, it is characterized in that:
This Digital Television receiving card comprises:
One ground digital television broadcast or a digital video broadcast-satellite receiving element, be arranged between universal digital TV interface and the ARM micro-control unit, be used for the digital television signal of ground digital television broadcast or digital video broadcast-satellite is carried out the demodulating and decoding of channel;
One ARM micro-control unit is arranged between ground digital television broadcast or digital video broadcast-satellite receiving element and the universal digital TV interface, is used for the operating state of whole receiving card is controlled;
One universal digital TV interface CI unit is connected with ground digital television broadcast or digital video broadcast-satellite receiving element, ARM micro-control unit and Digital Television set-top box respectively, is used to provide the data channel of receiving card and set-top box.
3. according to claim 2 based on the ground of CI interface and the access device of satellite digital TV, it is characterized in that:
This ground digital television broadcast or digital video broadcast-satellite receiving element include:
One tuner is arranged between antenna and the A/D analog-to-digital conversion, and the data that receive from antenna become analog intermediate frequency signal through this, amplifies after A/D converts digital signal to;
One crystal oscillator is arranged between A/D modulus and the sampling clock, is used to control sampling clock, and its skew is estimated to obtain by the sampling clock sync section;
One real complex transformation is arranged between A/D modulus and the FFT fast fourier transform, and wherein data one tunnel are done the output that the control of AGC automatic gain removes to control tuner after the A/D analog-to-digital conversion, and another road is transformed to the required complex signal of FFT fast fourier transform through this;
One frequency offset correction, be arranged between the real complex transformation of R/C, FFT fast fourier transform and the sampling clock, the interior known pilot of the band that its sync section utilizes time domain protection interval and frequency domain end to insert, estimate and the definite time domain FFT fast fourier transform windows position of tracking, estimate note simultaneously because the frequency deviation that down-conversion causes is gone up in transmitting-receiving, through overdeviation control unit tracking frequency offset, deliver to digital frequency offset correction unit, data are flow to line frequency proofread and correct partially;
One phasing is arranged between FFT fast fourier transform and the channel estimating, through frequency offset correction control unit tracking frequency offset, delivers to digital frequency offset correction unit, and skew is proofreaied and correct to the residual phase behind the frequency offset correction;
One sampling clock, respectively with crystal oscillator, the decoding of TPS transmission parameter, FFT fast fourier transform, frequency deviation and frequency deviation with real/be electrically connected between multiple, estimate that synchronously obtaining receiving and dispatching the sampling crystal oscillator can not mate the sampling clock error of bringing fully, give VCXO through the digital PLL phase-locked loop, make the transmitting-receiving sampling clock synchronous, the data flow behind frequency offset correction is done the OFDM demodulation in the FFT fast fourier transform;
The decoding of one TPS transmission parameter, be arranged at sampling clock phasing and FFT fast fourier transform line between, frequency-region signal after demodulation obtains a frequency domain symbol type and a frame synchronization position respectively by sampling clock synchronization module and the decoding of TPS transmission parameter, simultaneously the frequency offset correction module estimates to obtain the phase place tilt value of the linear growth that FFT window position deviation brings, the sampling clock synchronization module estimates to obtain the common phase deflection that timing, frequency deviation, analogue device cause, linear growth phase place, these two kinds of phase places of common phase are proofreaied and correct;
One channel estimating is arranged between phasing and Viterbi measure, and the data after channel estimating is proofreaied and correct are eliminated the influence of channel multi-path through channel estimating and equilibrium treatment;
One dimension is special than measuring, and between being arranged at channel estimating and quantizing, data are passed through this Viterbi and measured, quantize, and the decode procedure of contrary of encoding enters and make a start;
One decoder module, interweave in separating by quantize inserting successively, Viterbi decoding, RS sign indicating number synchronously, deconvolution interweaves, RS decodes, descrambling, obtains the TS code stream at last.
4. according to claim 2 based on the ground of CI interface and the access device of satellite digital TV, it is characterized in that:
This universal digital TV interface CI unit pack contains:
One CIS characteristic information memory block, the structural arrangements information that is used to store receiving card;
One COR configuration information memory block is used for the initial configuration to receiving card, and main frame is after reading CIS information, according to the resource that self can provide reception is sticked into capable reasonable configuration, its configuration words will be written back to this district, after receiving card is configured, just can begin the operation of channel demodulation decoding;
One I/O MEMORY interface data memory block provides a kind of interaction mechanism, and main frame and receiving card are communication interface by the support of CI agreement with I/O MEMORY, real-time interaction data information.
5. according to claim 2 based on the ground of CI interface and the access device of satellite digital TV, it is characterized in that:
This ARM micro-control unit includes:
One ARM microcontroller is connected with clock circuit, interrupt vector controller, FLASH memory, RAM memory respectively, is used for the operating state of receiving card is controlled, and is responsible for the foundation of receiving card and set-top box upper layer communication agreement;
One CLOCK clock circuit is used to the operating frequency that provides stable;
One VIC interrupt vector controller provides the support of receiving card interrupt mechanism;
One FLASH memory is used to store personal code work;
One RAM memory is used to provide the code during the program running and the memory space of data.
6. one kind based on the ground of CI interface and the implementation method of satellite digital TV, it is characterized in that it comprises following steps:
(1) when the CI interface is sky, signal router 1 gating cable digital TV broadcast singal passage, set-top box inserts digital catv signal by the cable TV interface, signal via cable digital TV broadcast channel demodulating and decoding unit, signal router unit, MPEG2 source coding cell processing after, send into the TV output interface and show;
(2) after the CI interface inserted ground digital television broadcast or digital video broadcast-satellite receiving card, by the Intelligent Recognition mechanism of CI interface standard, set-top box detected the insertion of receiving card; Again by decoding to CIS receiving card characteristic information memory area configuration information, set-top box has obtained the cognition to the receiving card characteristic, set-top box sticks into the control of capable configuration information memory block and router to reception afterwards, just can carry out the reception of ground digital television broadcast or digital video broadcast-satellite digital television signal;
(3) after the channel-decoding demodulation is finished, signal entering signal router two resume module, the router two module is transmitted to CAM condition receiving card module to the code stream of scrambling by the CI interface, selection information according to the user, condition receiving card to the code stream of scrambling filter, after the control word deciphering, scramble process, code stream behind the descrambling is passed back to set-top box by the CI interface, carry out the processing of source coding;
(4) by the source coding unit in the set-top box, obtain original audio/video information, send into TV and show.
7. according to claim 6ly it is characterized in that based on the ground of CI interface and the implementation method of satellite digital TV it further comprises following steps:
(1) finishes demodulation, the decoding function of channel by Digital Television receiving card;
(2) signal is via PCMCIA PCMCIA (personal computer memory card international association) interface, and under the support of bottom layer driving software, MPEG source coding program is carried out software decode to code stream and handled;
(3) code stream is delivered to the man-machine interface program display.
8. according to claim 6 based on the ground of CI interface and the implementation method of satellite digital TV, it is characterized in that: it is made of hardware and software, hardware comprises the adapter of a PCI peripheral interface to PCMCIA PCMCIA (personal computer memory card international association) interface, software comprises the design of drive software and the design of upper application software, wherein, drive software is used to provide the interface between Digital Television receiving card and the upper application software, support to digital tv receiver card bottom software is provided, upper application software is divided into two modules, with the MPEG source coding module of software mode realization and the Application Program Interface module that is used to realize user control interface, its information source flow process: signal is via PCMCIA PCMCIA (personal computer memory card international association) interface, the PCI peripheral interface is to PCMCIA PCMCIA (personal computer memory card international association) transition card, the PCI peripheral interface enters PC, under the support of bottom layer driving software, MPEG source coding program is carried out the software decode processing to code stream, delivers to the man-machine interface program display at last.
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| CNB2004100515409A CN1309246C (en) | 2004-09-21 | 2004-09-21 | Access device and realizing method based on CI interface of ground and satellite diyital television |
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Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373930C (en) * | 2005-10-27 | 2008-03-05 | 上海交通大学 | Analogue TV differential rotating machine possessing digital TV program differential rotating function |
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| CN101448126B (en) * | 2007-11-27 | 2010-12-15 | 海华科技股份有限公司 | Conditional access system of digital television and operation method thereof |
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| CN102227138B (en) * | 2011-06-24 | 2013-07-10 | 北京数码视讯科技股份有限公司 | Conditional access module card and realization method thereof |
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| CN102572564A (en) * | 2012-01-05 | 2012-07-11 | 四川长虹电器股份有限公司 | Method for common interface (CI) card interface to be compatible with condition access (CA) card |
| CN103491420B (en) * | 2013-09-18 | 2017-05-10 | 深圳Tcl新技术有限公司 | Bidirectional video-on-demand method and digital television all-in-one machine |
| CN103916684B (en) * | 2014-04-29 | 2018-01-16 | 深圳国微技术有限公司 | A kind of signal acquisition Transmission system and method based on pcmcia interface |
| CN104301631B (en) * | 2014-07-30 | 2016-03-16 | 杭州海康威视数字技术股份有限公司 | Signal with different type adaptive access circuit and using method thereof |
| CN106101838B (en) * | 2016-07-18 | 2019-07-16 | 青岛海信电器股份有限公司 | The processing method and digit receiving terminal of CI module in quick turn-on |
| CN108632655A (en) * | 2017-03-25 | 2018-10-09 | 张祖豪 | A kind of anti-visual fatigue TV |
| US10893002B2 (en) | 2017-12-08 | 2021-01-12 | Evertz Microsystems Ltd. | Universal radio frequency router with an automatic gain control |
| CN109743622A (en) * | 2019-01-23 | 2019-05-10 | 青岛海信电器股份有限公司 | A kind of tuning method for parameter configuration, device and equipment based on CAM card |
| CN111475450A (en) * | 2020-03-27 | 2020-07-31 | 深圳市金锐显数码科技有限公司 | CI interface detection device and CI interface signal detection method for television mainboard |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20001235U1 (en) * | 2000-01-25 | 2000-04-06 | Technisat Satellitenfernsehpro | Extension module for upgrading DVB receivers to CI standard |
| US20030112771A1 (en) * | 2000-08-30 | 2003-06-19 | Jean-Yves Leroux | Device for routing digital data flows and in particular for routing packet transmission data flows |
| DE20220560U1 (en) * | 2002-03-12 | 2004-02-12 | Technotrend Ag | Device for tapping and feed of MPEG2 transport currents in digital video broadcasting (DVB) receiver, converts data format in both directions between receiver and interface |
| CN2629371Y (en) * | 2003-02-12 | 2004-07-28 | 谭祝平 | Front-end system equipment and user terminal equipment for wired broadband business |
-
2004
- 2004-09-21 CN CNB2004100515409A patent/CN1309246C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20001235U1 (en) * | 2000-01-25 | 2000-04-06 | Technisat Satellitenfernsehpro | Extension module for upgrading DVB receivers to CI standard |
| US20030112771A1 (en) * | 2000-08-30 | 2003-06-19 | Jean-Yves Leroux | Device for routing digital data flows and in particular for routing packet transmission data flows |
| DE20220560U1 (en) * | 2002-03-12 | 2004-02-12 | Technotrend Ag | Device for tapping and feed of MPEG2 transport currents in digital video broadcasting (DVB) receiver, converts data format in both directions between receiver and interface |
| CN2629371Y (en) * | 2003-02-12 | 2004-07-28 | 谭祝平 | Front-end system equipment and user terminal equipment for wired broadband business |
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| Publication number | Publication date |
|---|---|
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