WO1999012335A2 - Video tape and apparatus for playing such a video tape - Google Patents
Video tape and apparatus for playing such a video tape Download PDFInfo
- Publication number
- WO1999012335A2 WO1999012335A2 PCT/IB1998/001287 IB9801287W WO9912335A2 WO 1999012335 A2 WO1999012335 A2 WO 1999012335A2 IB 9801287 W IB9801287 W IB 9801287W WO 9912335 A2 WO9912335 A2 WO 9912335A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- teletext
- data
- tape
- video
- page
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/09—Digital recording
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
- H04N5/9206—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a character code signal
- H04N5/9207—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a character code signal for teletext
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/782—Television signal recording using magnetic recording on tape
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
- H04N5/7755—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver the recorder being connected to, or coupled with, the antenna of the television receiver
Definitions
- the invention relates to a VHS video tape and to a tape player for playing such a video tape.
- the invention provides a VHS video tape carrying thereon teletext data multiplexed with a video signal, the teletext data being encoded into a multilevel code having a data rate less than that of a standard broadcast teletext signal and within the bandwidth of a VHS standard video recorder, in which the teletext data is relevant to the material on the tape and on a given teletext page is updated along the length of the tape.
- a conventional teletext data base as transmitted by a broadcaster contains the same information repeatedly transmitted in a cycle. After around 20 seconds the cycle is repeated. There may be different versions of some pages on the next cycle (rolling pages) but after several cycles all versions of those pages are cycled through and the information is repeated. For news items and other information there may be periodic updates during the day but in general the information is static and not related in any way to the TV programme content on the particular channel with which the teletext signal is being transmitted.
- the teletext data base can be constructed by the media producer using the standard teletext generation equipment but with the difference that the teletext page origination equipment is linked into the video master playback equipment. Time codes from the master video source can be used to initiate the insertion of different teletext page data under the control of the editor.
- a first example is of an otherwise conventional video tape conveying a film of a detective story.
- Part of the conventional teletext data base fixed for the duration of the tape is an index page or pages describing the various teletext services provided. Each of these services will normally be allocated a page or group of pages. One or more of these pages or groups of pages could o be the "plot so far".
- a second example, perhaps particularly appropriate in the case of a detective story, is to have different pages representing the events according to the perspective of different characters in the drama.
- a particular page could be selected from the index such as "Mr Brown's impressions”. This page would be updated from time to time with events in the story as seen through Mr Brown's eyes.
- This page would be updated from time to time with events in the story as seen through Mr Brown's eyes.
- this could provide not only entertainment for those who like this kind of detective puzzle but could provide penetrating insights into character's impressions and motivations.
- false clues and misinterpretations could be added to give confusion.
- a third example enhances the above possibilities by using a newsflash type technique.
- a newsflash type technique As is known from broadcast television rather than the information being displayed as a complete teletext page instead of the TV picture it can be added to the video material so that the text is displayed in a box superimposed on the TV picture.
- the teletext data is transmitted as a news flash page which switches on the TV picture and only characters within the box are displayed.
- the size shape and position of the box can be altered to suit the video material, dynamically if required.
- Examples of the creative use of this technique include cartoon style speech bubbles associated with characters on the TV picture or selective blanking of significant parts of the picture with a box, for example a box containing text of Inspector Le Plodd's thoughts conceals the murder weapon.
- a fourth example of dynamically changing teletext could be the use in quizzes and puzzles for educational as well as entertainment material.
- Some video material is presented outlining a particular situation and then a particular teletext page appears asking questions based on the video material or on a similar topic to the video material with multiple choice answers.
- the viewer thinks about the question and selects the chosen answer either by selecting a particular page number or pressing a coloured key as in the Fastext or TOP modes. If the question is answered within the time limit the answer page defines the answer as right or wrong and presents any other information which may be desired.
- the data on the answer 5 pages changes to something like "out of time" and has associated with it different pointers.
- a comprehensive set of questions and answers with a real interactive feel can be created.
- the data base is not truly interactive, but it gives an interactive feel to the viewer because all possible answers to questions are recorded on the tape and it changes with o time in a dynamic way.
- time is equated with position on the tape and although this is not absolute time, i.e. it does not coincide with a particular time of day, it does correspond with elapsed time from the start of playing the tape.
- the data may be presented as full pages without the video information 5 or may replace the video for a certain duration. Alternatively it may be mixed with the video in a box as required or superimposed on the video as with the known mixed node in normal teletext transmission.
- graphics can be used dynamically to create special effects, such as to reveal progressively part of a picture.
- portions of that person can be progressively revealed, the marks allocated to the viewer depending on how much of the person has to be revealed before the viewer can guess who the person is.
- a further example of this technique is for producing a product catalogue using such a tape.
- a picture of a product may be displayed and while the picture is being displayed selected teletext pages giving further information such as prices, local dealers, product specifications and any other relevant information can be made available.
- These teletext pages need not be present throughout the tape as they would naturally only be accessed during or immediately after the video material for the corresponding product. So different parts of the tape will contain different teletext pages as appropriate.
- This approach has certain advantages. There is ample capacity for hundreds of pages to describe items in detail on the tape and faster access to the required information can be provided than is usual with normal broadcast teletext transmissions as at any given time the teletext data base is not encumbered with data for other items which are described at other portions of the tape.
- Figure 1 shows a standard broadcast teletext signal and the effect of the restricted bandwidth of a VHS recorder on this signal
- Figure 2 shows a four level code representing the broadcast teletext signal which is suitable for recording on and replay from a VHS recorder
- Figure 3 shows on an enlarged timescale a portion of the signal shown in Figure 2;
- Figure 4 shows in block schematic form the recording equipment required by the media producer to produce a video tape according to the invention;
- Figure 5 shows in block schematic form playback apparatus according to the invention
- Figure 6 shows one example of a teletext page containing information from a tape according to the invention
- Figure 7 shows an example of two alternative pages
- Figure 8 is an example of a newsflash display derived from a tape according to the invention.
- Figure 9 shows an example of how a prerecorded tape may contain an interactive quiz for entertainment or education.
- Figure 1 shows a standard teletext signal as received by a receiver.
- the data rate of the teletext signal is greater than 5 MHz and consequently such a signal will be distorted when it is fed through a video recorder, such as one according to the VHS standard which has a channel bandwidth of around 3 MHz.
- Figure 1b shows how the teletext signal is affected by the channel bandwidth of a typical VHS recorder.
- the initial clock run-in information is lost and on replay such a signal would not be decodable by a standard teletext decoder.
- PHB 34056 discloses the use of a multilevel code which has a data rate which is lower than that of the standard teletext data rate.
- Figure 2 shows a line of teletext data encoded according to a four amplitude level code.
- the initial clock run-in has been replaced by a lower frequency clock run-in while the framing code and data are replaced by the four level code.
- the four levels in this instance are four amplitude levels and consequently in each data period two bits can be encoded, the four levels giving the codes 00, 01 , 10, and 11.
- the teletext signal re-encoded according to the multilevel code now has a data rate of half that of the standard teletext signal and now falls within the bandwidth of the VHS recorder.
- Figure 3 shows the initial part of a teletext line using the multilevel code on an expanded time scale and indicates the cycles of the clock-run in the framing code and the data.
- the clock run-in frequency is arranged to be half that of the standard teletext clock run-in frequency.
- the method of recording teletext data on a tape comprises the step of converting teletext data generated at the standard rate into a multilevel code at a data rate which is lower than that of the standard teletext signal.
- the multilevel code is then applied to the recording apparatus to enable the data to be recorded on the tape.
- a four level amplitude code is used and the data rate is half that of the standard teletext signal. If an 8 level code was used then the data rate could be reduced to one third of the standard teletext data rate since an 8 level code would allow each data period to encode three bits.
- the multilevel code is read from the tape and then converted to standard teletext data in an inverse operation to the conversion on recording.
- This data can then be fed into a teletext encoder to enable the teletext data to be reassembled with the video signal for transmission to an associated television receiver.
- the whole process of recording and replaying teletext data in this fashion using a VHS recorder is disclosed in our co-pending UK Patent Application referred to above, the contents of which are hereby incorporated by reference.
- teletext refers not only to a system, such as World System Teletext, in which the teletext data has a binary data rate which is too high for a standard VHS recorder to record or replay but to any data which might be carried in the VBI of a television signal and which is associated with the television programme.
- data includes MHEG-5 data (MHEG is Multimedia Hypertext Experts Group) and Hypertext Mark Up Language HTML each of which may have a binary data rate which is too high for a standard VHS recorder to record or replay.
- Figure 4 shows the recording equipment required by the media producer to produce a video tape according to the invention.
- Video material sources 1 such as video cameras, telecine machines etc. feed video signals to master video editing equipment 2.
- the master video editing equipment 2 will have a video controller 3 and video monitor 4 so that the media producer can edit the video material coming from the sources 1 and view the edited material.
- a teletext originating system 5 having one or more editing terminals 6 receives time codes from the master video editing equipment over a line 7.
- the output of the teletext origination system 5 feeds a teletext data base 8.
- the output of the teletext data base 8 and the master video editing equipment 2 are combined in a combiner 9 which records the resulting signal on to a master tape 10.
- the master tape 10 is then used in replication equipment 11 to produce the tapes for distribution.
- Figure 5 shows in block schematic form playback apparatus for playing back prerecorded tapes according to the invention.
- a prerecorded tape 50 is loaded into a video tape recorder and the replay circuits 51 produce video and audio output signals which are fed to a video processor 52 and audio processor 53 respectively.
- the CVBS signal from the output of the luminance processor is fed to a first input of a multiplexer 54 and to the input of a decoder 55 which decodes the multilevel code read from the video processor during the vertical blanking interval and converts it into teletext data. This data is placed into a buffer RAM 56.
- a control and timing circuit 57 receives the CVBS signal from the video processor 52 and generates appropriate control and timing signals therefrom. The control and timing circuit 57 also receives control instructions from the user o in conventional fashion.
- Appropriate timing signals for the teletext decoding are produced by the control and timing circuit 57 using the synchronising pulses derived from the CVBS signals. These timing signals are applied to the decoder 55, the buffer RAM 56 and a teletext encoder 58.
- the teletext encoder 58 takes the data from the buffer RAM 56 which is read from the 5 buffer RAM 56 under the control of timing pulses from the control and timing circuit 57 and assembles them into standard teletext data packets.
- the output of the teletext encoder 58 is fed to a second input of the multiplexer 54.
- the control and timing circuit 57 switches the output of the multiplexer from the first to second inputs at the appropriate time during the vertical blanking interval.
- the output of the multiplexer 54 is fed either to a SCART connector or to the input of a modulator 59 which modulates the signal on to a UHF carrier and feeds it to an aerial socket.
- a modulator 59 which modulates the signal on to a UHF carrier and feeds it to an aerial socket.
- the components form a standard VHS video recorder except that those components within the dotted box 60 being special components for enabling the multilevel 5 teletext code to be read from the tape and converted into standard teletext data.
- Our co-pending UK Patent Application No. 9605614.8 (PHB 34056), the contents of which are hereby incorporated by reference, discloses how this circuitry within the box 60 is constructed and operates.
- FIG. 5 The part of Figure 5 below the chain dotted line is a block schematic 0 diagram of a conventional television receiver having a facility for decoding and displaying teletext pages. It comprises a tuner 61 , IF stage 62, and demodulator 63.
- the demodulator 63 will produce a CBVS signal which is fed to a video processor 64 and an audio signal which is fed to an audio processor 65.
- a teletext decoder 66 receives the CBVS signal and under the control of a control processor 67 which receives instructions from a remote control handset 68 will acquire and decode selected teletext pages.
- the output of the teletext decoder will normally be an RGB signal which is fed to the video processor 64 and the control processor 67 will determine whether the video signal or the decoded teletext data is fed through the video processor to the display 69.
- the output of the audio processor will normally be fed to a loudspeaker 70 but may also have outputs for feeding to headphones. If the data is not in conventional teletext form but takes the form of MHEG-5 or HTML encoded data the teletext decoder will be replaced by a decoder matched to the data format recorded.
- Figure 6 illustrates the situation when the page containing the synopsis 5 of the plot so far is called up.
- Figure 6a shows a teletext page which is displayed on request of the plot synopsis during the replay of a detective film and the text in Figure 6a may read for example "Inspector Le Plodd has received a strange telephone call from a Miss Jinx nothing much of substance but hints of dark deeds in rural Dorset are in the air".
- o Figure 6b illustrates the same teletext page when called up by the viewer half way through the tape. As can be seen the plot so far page contains much more information and may read for example "Col. Blunderbuss has been found shot in the library of Doom Manor in Dorset.
- Figure 7 illustrates different teletext pages giving the perspective of different characters in the film.
- Figure 7a is a synopsis of Inspector Le Plodd's view while Figure 7b is a synopsis of Miss Jinx's view.
- Figure 7b gives Miss Jinx's perspective and may read as follows: "Why are these policemen so harmless, can't he see what is going to happen, I don't think he listened to a word I said. I can't tell Uncle Bertie as he is probably in this too. What am I going to do?"
- Figure 8 illustrates the use of the newsflash facility.
- the display includes the video sequence and superimposed on this in a box is some text.
- the text depicts the thoughts of the speaker which are being conveyed to the viewer but not the participants in the film.
- this newsflash box can be of any desired shape and be placed in any desired position and need not be confined to the thoughts of a speaker but can include, for example messages to the viewer, or may be used to obscure particular portions of the picture if the viewer wishes to have certain clues concealed.
- Figure 9 illustrates how a quiz sequence could be implemented on a video tape according to the invention. The viewer inserts a tape into the tape recorder and presses the play button.
- An introductory video sequence is then played, followed by instructions in video, box 90.
- On pressing the text key an introductory information page, box 91 is displayed. This is arranged to remain for long enough for the viewer to read it.
- the information page data is changed and the newsflash bit in the page set. No boxes are generated so under those circumstances video sequences will show and this continued until the end of the film, box 92.
- At the end of the newsflash bit on the information code is reset so a full text page appears, box 93.
- the data is changed to explain the instructions.
- the instructions may be as follows:
- the data in the teletext signal then changes to the first question page, box 94.
- This headed by the topic in this example "Elephants" and gives the first question 1. This may be for example, "Where would you expect to find elephants in the wild?" Press red for America and Asia, press green for Africa and India, press yellow for Antarctica, press blue for Australia.” If a coloured key is pressed within the given time limit, for example 10 seconds, another page is selected in standard Fastext or TOP fashion, that is the coloured keys operate particular links to particular pages from the displayed page.
- a memory may be provided to enable the number of correct answers to be recorded and a tally made at the end of the quiz to enable the viewer to judge the performance.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98936633A EP0935875A2 (en) | 1997-08-30 | 1998-08-19 | Video tape and apparatus for playing such a video tape |
JP51649699A JP2001505039A (en) | 1997-08-30 | 1998-08-19 | Videotape and device for reproducing the videotape |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9718322.2A GB9718322D0 (en) | 1997-08-30 | 1997-08-30 | Video tape and apparatus for playing such a video tape |
GB9718322.2 | 1997-08-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999012335A2 true WO1999012335A2 (en) | 1999-03-11 |
WO1999012335A3 WO1999012335A3 (en) | 1999-05-27 |
Family
ID=10818219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB1998/001287 WO1999012335A2 (en) | 1997-08-30 | 1998-08-19 | Video tape and apparatus for playing such a video tape |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0935875A2 (en) |
JP (1) | JP2001505039A (en) |
KR (1) | KR20000068852A (en) |
GB (1) | GB9718322D0 (en) |
TW (1) | TW380353B (en) |
WO (1) | WO1999012335A2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001011876A1 (en) * | 1999-08-06 | 2001-02-15 | Index Systems, Inc. | Enhanced vcr tapes |
WO2004034707A1 (en) * | 2002-10-10 | 2004-04-22 | Koninklijke Philips Electronics N.V. | Itv trick play over digital interface |
US6903779B2 (en) * | 2001-05-16 | 2005-06-07 | Yahoo! Inc. | Method and system for displaying related components of a media stream that has been transmitted over a computer network |
US7739596B2 (en) | 2007-04-06 | 2010-06-15 | Yahoo! Inc. | Method and system for displaying contextual advertisements with media |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4592653B2 (en) * | 2006-07-13 | 2010-12-01 | シャープ株式会社 | Recording and playback apparatus and method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3227373C1 (en) * | 1982-07-22 | 1983-07-07 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth | Method of storing digitised signals and circuit arrangement for carrying out the method |
GB2165083A (en) * | 1984-09-27 | 1986-04-03 | Thible Trading Company Limited | Informational videos |
DE3441152A1 (en) * | 1984-11-10 | 1986-05-28 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth | METHOD FOR MAGNETICALLY RECORDING AND PLAYING BACK TELECOMMUNICATION SIGNALS, IN PARTICULAR VIDEO TEXT AND / OR CABLE TEXT SIGNALS |
EP0610864A2 (en) * | 1993-02-12 | 1994-08-17 | Sony Corporation | A digital recording apparatus recording teletext signals without decoding |
EP0797354A1 (en) * | 1996-03-18 | 1997-09-24 | Koninklijke Philips Electronics N.V. | Recording and/or replaying teletext signals |
-
1997
- 1997-08-30 GB GBGB9718322.2A patent/GB9718322D0/en not_active Ceased
-
1998
- 1998-08-19 JP JP51649699A patent/JP2001505039A/en active Pending
- 1998-08-19 WO PCT/IB1998/001287 patent/WO1999012335A2/en not_active Application Discontinuation
- 1998-08-19 EP EP98936633A patent/EP0935875A2/en not_active Withdrawn
- 1998-08-19 KR KR1019997003706A patent/KR20000068852A/en not_active Application Discontinuation
- 1998-08-27 TW TW087114192A patent/TW380353B/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3227373C1 (en) * | 1982-07-22 | 1983-07-07 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth | Method of storing digitised signals and circuit arrangement for carrying out the method |
GB2165083A (en) * | 1984-09-27 | 1986-04-03 | Thible Trading Company Limited | Informational videos |
DE3441152A1 (en) * | 1984-11-10 | 1986-05-28 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth | METHOD FOR MAGNETICALLY RECORDING AND PLAYING BACK TELECOMMUNICATION SIGNALS, IN PARTICULAR VIDEO TEXT AND / OR CABLE TEXT SIGNALS |
EP0610864A2 (en) * | 1993-02-12 | 1994-08-17 | Sony Corporation | A digital recording apparatus recording teletext signals without decoding |
EP0797354A1 (en) * | 1996-03-18 | 1997-09-24 | Koninklijke Philips Electronics N.V. | Recording and/or replaying teletext signals |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001011876A1 (en) * | 1999-08-06 | 2001-02-15 | Index Systems, Inc. | Enhanced vcr tapes |
US6903779B2 (en) * | 2001-05-16 | 2005-06-07 | Yahoo! Inc. | Method and system for displaying related components of a media stream that has been transmitted over a computer network |
WO2004034707A1 (en) * | 2002-10-10 | 2004-04-22 | Koninklijke Philips Electronics N.V. | Itv trick play over digital interface |
US7596298B2 (en) | 2002-10-10 | 2009-09-29 | Koninklijke Philips Electronics N.V. | Synchronizing interactive applications during trick-play |
US7739596B2 (en) | 2007-04-06 | 2010-06-15 | Yahoo! Inc. | Method and system for displaying contextual advertisements with media |
US9003288B2 (en) | 2007-04-06 | 2015-04-07 | Yahoo! Inc. | System and method for displaying contextual advertisements with media |
Also Published As
Publication number | Publication date |
---|---|
WO1999012335A3 (en) | 1999-05-27 |
TW380353B (en) | 2000-01-21 |
JP2001505039A (en) | 2001-04-10 |
EP0935875A2 (en) | 1999-08-18 |
KR20000068852A (en) | 2000-11-25 |
GB9718322D0 (en) | 1997-11-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2356654B1 (en) | Method and process for text-based assistive program descriptions for television | |
EP0863669B1 (en) | Broadcast receiver selectively using navigation information multiplexed on transport stream and recording medium recording the method of the same | |
JP4551371B2 (en) | Interactive program generation system and interactive system and method for receiving composite interactive signals | |
AU610887B2 (en) | Interactive television system for providing full motion synched compatible audio/visual displays from transmitted television signals | |
US7272843B1 (en) | Broadcasting method and broadcast signal receiver apparatus | |
US7075587B2 (en) | Video display apparatus with separate display means for textual information | |
US5585858A (en) | Simulcast of interactive signals with a conventional video signal | |
US6192187B1 (en) | Video recorder | |
US8078034B2 (en) | Method and apparatus for navigating through subtitles of an audio video data stream | |
JPH10506200A (en) | Apparatus and method for controlling educational and recreational use of television | |
US9313541B2 (en) | Broadcasting method and broadcast signal receiving apparatus | |
JP4719390B2 (en) | Digital television receiver / decoder with interactive playback of predetermined television programs | |
WO1999012335A2 (en) | Video tape and apparatus for playing such a video tape | |
KR100477642B1 (en) | Apparatus and method for processing closed caption | |
US20050010959A1 (en) | Digital broadcast receiving apparatus and control method therefor | |
Cronin | Closed-caption television: Today and tomorrow | |
Bove | Personalcasting: Interactive local augmentation of television programming | |
BOSE | Bachelor of Science | |
JP4224516B2 (en) | BROADCAST RECEIVING APPARATUS, BROADCAST RECEIVING METHOD, AND RECORDING MEDIUM CONTAINING THE METHOD USING SELECTIVE NAVIGATION INFORMATION SELECTED WITH TRANSPORT | |
Good | Television's potential to deaf persons | |
WO1999012334A2 (en) | Video tape and an arrangement for replaying such a video tape | |
JPH05316467A (en) | Reproducing device | |
KR19990081592A (en) | Video broadcasting system with multiple subtitle service functions |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): JP KR |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1998936633 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 1999 516496 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1019997003706 Country of ref document: KR |
|
AK | Designated states |
Kind code of ref document: A3 Designated state(s): JP KR |
|
AL | Designated countries for regional patents |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1998936633 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1019997003706 Country of ref document: KR |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1998936633 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1019997003706 Country of ref document: KR |