WO1997018672A1 - Systeme de video presque sur demande et procede de television correspondant - Google Patents
Systeme de video presque sur demande et procede de television correspondant Download PDFInfo
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- WO1997018672A1 WO1997018672A1 PCT/JP1996/003320 JP9603320W WO9718672A1 WO 1997018672 A1 WO1997018672 A1 WO 1997018672A1 JP 9603320 W JP9603320 W JP 9603320W WO 9718672 A1 WO9718672 A1 WO 9718672A1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/812—Monomedia components thereof involving advertisement data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
- H04N7/17318—Direct or substantially direct transmission and handling of requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
- H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal
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- 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
- H04N5/781—Television signal recording using magnetic recording on disks or drums
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
Definitions
- the present invention relates to a near video demand system used for a pay television broadcasting system called, for example, pay television or conditional access, and a broadcasting method thereof.
- video movies have been broadcast very frequently on pay television.
- a main program such as a video movie
- additional information programs such as commercial videos and promotion videos are generally transmitted between the main program and the main program. That is, it is aired before or after the start of the video movie, and is not inserted in the middle of the video movie.
- CM videos Promotion videos, etc.
- CM videos are broadcast together before or after the start of a video movie.
- the video movie material and the material such as the CM video are separate, it is easy to appropriately update the material such as the CM video.
- V ⁇ ⁇ D video on demand where users can watch video programs from the beginning at any time at their own convenience.
- the service capabilities of the system have become desired.
- a complete V ⁇ D system requires a very large number of channels according to the number of users, making it difficult to recover the invested capital. And for this reason it is currently the main test; I have.
- V ⁇ D video ban groups of the same content are sequentially transferred to a limited number of channels (for example, 16 channels) at fixed time intervals of, for example, 5 to 15 minutes.
- a limited number of channels for example, 16 channels
- time intervals for example, 5 to 15 minutes.
- the user selects the most convenient channel at the start of use, and although there is some waiting time, the user can watch the video program from the beginning at almost any time from the beginning.
- Service has been proposed. It is a so-called dual-avid-on-demand (NV ⁇ Dnearvideoondemand) system.
- CM videos, etc. need to be updated as appropriate and broadcasted to the latest content, in favor of their characteristics.
- the same number of sets of video movie materials and CM videos as the number of channels of the multiple channels are prepared, and these sets are independently set with a certain time difference for each channel. It can also be broadcast on TV.
- the pay TV broadcaster prepares only one set of material such as video movie material and CM video, which allows the same program to be broadcast on multiple channels at different times. If this can be realized, it will be a very convenient and inexpensive system. It is desirable that the material such as CM video can be easily updated by separating it from the video movie material.
- an object of the present invention is to provide a V0D system capable of incorporating C-video, promotion video and the like into a video-based program, and a method of broadcasting the same.
- a near-video on demand system is a near-video on-demand system that divides digital data of a main program into a plurality of pieces and discretely records the data in response to a control signal and a control signal from the control means.
- a high-speed digital playback means for playing back the demanded system recording data at a high speed; a server for additional information program data for playing back additional information data in response to a control signal from the control means; In response to a timing signal from the control means, a buffer for selectively writing and reading near-video-on-demand system recording data from the high-speed digital reproduction means.
- a Conclusions Li click scan * sweep rate pitch catcher means for outputting et additional information program data selectively, sequentially respectively sent to multiple Ji Ya tunnel incorporates the main program in the additional information program.
- the present invention provides a net broadcast time TV! D E.
- This is a method of broadcasting a set using a near-video-on-demand system, in which a channel is added to an additional information program at an Mfi station, compared to the conventional number of channels N.
- N the number of channels
- the main set in which the additional information program is incorporated is sequentially broadcast with the same time difference as when the additional information set is not incorporated.
- 1A to 1E are diagrams for explaining the process of creating high-density recording data for an NVD system.
- FIG. 8 is a diagram for explaining a method of broadcasting a video-like movie when an M-video and a motion video are not incorporated.
- FIGS. 3A to 3G are diagrams for explaining a method of broadcasting a video game with a CM video and a motion video in a 5-channel NVD system.
- FIG. 4 is a block diagram of an apparatus for creating high-density recording data for the NVD system of FIG.
- FIG. 5 is a block diagram of an apparatus for creating high-density [! 13 ⁇ 4 data] for the NV0D system in FIG. 1.
- FIG. 6 is a diagram showing a block diagram of a device incorporating a CM video and a promotion video in a 5-channel NV ND system.
- FIGS. 7A to 7K are diagrams for explaining the operation of the apparatus in FIG.
- FIG. m1 is a diagram for explaining a method of creating a video image for the NVOD system used in the present embodiment. From this video movie material, the video data for broadcast of the NV ⁇ D system recorded on a magneto-optical disk ( ⁇ ) and a hard disk (HD) is created by the method described below. You.
- Fig. 1 shows digital data of the original video movie material, for example, for 120 minutes. This video data can be compared temporally. Divide equally into 30-minute data segments of A, B, C, and D, and further divide each data segment into four equal units of 7.5-minute data units to obtain the entire video data. Is ⁇ 0, ⁇ 1, A 2, A 3, ⁇ , ⁇ 1,
- the video data for the NV ⁇ D system shown in Fig. 1E is created through the four recording operations shown in Figs. 1B to 1E.
- data units AO, A1, A2, and A3 are converted from the original video data into high-efficiency codes such as MPEG2 by the first recording operation (pass).
- the area to be recorded for example, M ⁇ , tlD, etc., is distributed to the first predetermined place of each of the four divided sub-areas and recorded in real time.
- the data ⁇ places BO, ⁇ 1, ⁇ 2, ⁇ 3 are similarly compressed by the second recording operation, and the data units AO, A1, A 2. Record in real time by dispersing them in simple places adjacent to ⁇ !
- the data units C 0, C 1, C 2, and C 3 are similarly compressed by the third recording operation, and then the data units BO, B 1, Distribute to one location adjacent to B 2 and B 3 respectively and record in real time.
- the data units DO, D1, D2, and D3 are compressed in the same manner by the fourth operation i, and the data units C0,
- the data is distributed to the saturate areas adjacent to C1, C2, and C3, respectively, and recorded in real time.
- the compressed data for the NVDD system is different from the original video data and the data ii.
- the video data for the NVOD system is used to release a video movie that sequentially sends video movies to multiple channels (four channels in this case) with a certain time difference. Will be described.
- FIG. 2A is the compressed and recorded video data for the NVD system of FIG. 1E.
- mB shows reproduction data obtained by repeatedly and repeatedly reproducing the video data of FIG. 2A.
- This repeated playback data is played back at high speed continuously at a rate of 1 block: 1 block of video data for NV0D System A originally of 120 minutes. . What is important here is that all playback data is included in the recording data for one block.
- FIGS. 2C to 2F show the contents of a video movie that is sequentially output from the repetition data to the channels # 1 to # 4 with a certain time difference.
- Compressed data ⁇ 0, ⁇ 1, ⁇ 2, ⁇ 3 are read out intermittently from the second block of the next 30 minutes, buffered, and video data B 0, B of 3 () minutes Get 1, B 2, B 3.
- the compressed data CO, C1, C2, and C3 are intermittently read from the next block of 30 minutes K1] and buffered, and the video data C of 30 minutes is read. t). Obtain C 1, C 2 and C 3. Furthermore, the compressed data DO, D1, D2, and D3 are read out intermittently from the fourth block ⁇ of the next 30 minutes and buffered, and the video data DO, Obtain D 1, D 2, D 3.
- channel # 2 is the first 30 minutes of video from compressed data AO, A1, A2, A3 of block 2 in Figure 2B, as shown in Figure 2D.
- the video data B O, Bl, ⁇ 2, ⁇ 3 of the next 30 minutes R0 are obtained.
- video data C O, C l, C 2, C 3 for the next 30 minutes are obtained.
- From the compression data D ⁇ , D 1, D 2, D 3 of the next block 5, the video data D O, D 1, D 2, D 3 of the next 30 minutes ill] are obtained.
- a video movie that starts 30 minutes later than channel # 1 is played back on channel # 2.
- channel # 1 still provides a video movie that starts 30 minutes behind channel # 4.
- channel # 2, channel # 3, and channel # 4 also sequentially obtain video movies starting with a time difference of 30 minutes.
- the original video / movie material described in connection with FIGS. 1 and 2 is dispersed and recorded on a hard disk or the like to create a recording medium for an NV0D system, and this is recorded at high speed.
- the technology to be regenerated is U.S. Pat. No. 4,448,243 filed on May 23, 1995 by the same assignee (corresponding to Japanese Patent Application No. 6-111, 94). No. 0 and Japanese Patent Application No. 6-1119, 324) are described in detail. Please refer to it as necessary.
- a magneto-optical disk (MO) or a hard disk (HD) is used as a private medium for broadcasting the NVOD system.
- the notes in Fig. 1 and the reproduction in Fig. 1 are added. Since the performance of such devices has been remarkably improved, it is possible to reproduce at a higher bit rate than the bit rate at the time of recording (high-speed reproduction).
- a recording medium for broadcasting on the NV0D system is created by normal recording without using a compression technique such as MPEG2 (see FIG. 1E), and this is reproduced at, for example, 4 ⁇ speed in the reproduction described in FIG. Fast playback may be performed.
- a moving image compression technique such as MPEG2 may be used to accumulate compressed data on the hard disk.
- the compression ratio is, for example, 1Z10, even if the compressed data is reproduced at a normal speed during reproduction, the high-speed reproduction will be 1 ⁇ times as long as the original video data when converted.
- time!] Axis compression technology can be used.
- the time fin axis compression technology is used instead of MPEG2 or other regional compression. Compress the question axis and use normal speed If it is played, it will be 4 times faster. Further, these techniques may be combined.
- the playback described in Fig. 2 is equivalent to, for example, 4 times the high-speed playback in terms of the original video movie, compared to the recording described in Fig. 1.
- “high-speed reproduction” is used in the present specification, all the recording modes described above are to be applied.
- the user can select the first video movie channel from there at any time. You can watch a video movie without waiting for up to 30 minutes.
- the number of channels is about 16 channels, so you can start watching a video movie with a net time of 120 minutes at any time. However, when waiting, the maximum is about 7.5 minutes even if it is very large.
- Fig. 3 use the same video data for the NV0D system and incorporate CM video, promotion video, etc.-NV0D system that sequentially sends out to multiple channels at a fixed time difference. System will be described.
- the number of channels is increased by i compared to Fig. 2 to make a total of 5 channels. is there.
- Fig. 3 ⁇ ⁇ shows the same repeated playback data as Fig. 2B.
- high-speed playback is performed using data recorded by compressing a movie of 120 minutes into 30 minutes as 1 block.
- Fig. 3B shows promotion video data stored in the CM & Promo. Server (see reference numeral 19 in Fig. 56).
- the promotion video data Promo.1, Promo.2, Promo.3, Promo.4, Promo.5, and Promo.5 are used for the same block units as in Fig. 3 (1). ... Shall be marked. Therefore, each of Promo.1 to Promo.5 has a limitation that when broadcast, it is a motion video within 30 minutes.
- Promo.;! ⁇ Promo.5 may be a promotion video with the same content.
- FIG. 3 ⁇ 4 Figures 3C to 3G show the contents of a video movie incorporating promotion video, which is sequentially sent out to channels # 1 to 5 with a certain difference.
- channel # 1 reads Promo.1 from the output data of the C ⁇ & Promo server in Fig. 3 and promotes the promotion video before starting the video movie.
- the subsequent playback of the video movie is the same as the playback of the video movie described using FIG. That is, in the next 30 minutes, data ⁇ 0, A 1, ⁇ 2, A 3 are read out intermittently from the ⁇ 2 block in FIG. A0, A1, ⁇ 2, A3 are obtained. Further, in the next 30 minutes, compressed data B ⁇ , B l, ⁇ 2, ⁇ 3 are intermittently output from the third block of FIG. 3A, and the 30 minute video data ⁇ ,, ⁇ Get 1, ⁇ 2, 13 3.
- the compressed data C 0, C 1, C 2, and C 3 are intermittently read out from the fourth block in FIG. Get 1, C2, C3.
- 3 3 ⁇ 4 Compressed data I) 0, D 1, D 2, D 3 are read out from block 3 in the figure ⁇ 3 partly, and 30 minutes O video data D 0, Dl, D2, D3 are obtained.
- the promotion video Prom.1 is broadcast before the video movie starts, and then the video is played back in the same way as in Fig. 2C. The entire movie is played.
- channel # 2 is 30 minutes behind channel # 1, and the output of P rom. 2 from the P rom. Server output in FIG. Output data.
- the first 30 minutes of video data ⁇ 0, ⁇ 1, A2, and ⁇ ⁇ 3 are obtained from the A3 block data A0, A1, A2, and A3 in FIG. 3A. Get A3.
- the video data B 0, B 1, B 2, and B 3 of the next 30 minutes are obtained from the data B 0, B 1, B 2, and B 3 of the fourth block in FIG. 3A. Get B3.
- the video data C 0, C 1, and C 3 of the next 30 minutes are obtained from the data C 0, C 1, C 2, and C 3 of the fifth block in FIG.
- video data D 0, D 1, D 2, and D 3 for the next 30 minutes are obtained from the data D 0, D 1, D 2, and D 3 of the G-th block.
- the promotion video P rom. 2 is similarly incorporated in the channel # 2 before the start of the video movie, and ⁇ is started 30 minutes later than the channel # 1. The whole video movie is played.
- the video movie ⁇ ⁇ ⁇ incorporates the ⁇ -motion video P rom.3, and for channel # 2, 30 minutes.
- the video that starts later is output.
- the promotion video Prom. 4 is incorporated into the channel # 4 before the start of the video movie, and the channel # 3 is divided into 3 minutes.
- the video movie is output.
- the promotion video P rom. 5 is similarly incorporated into channel # 5 before the start of the video # 11, and 3 () minutes for channel # 4. hand The starting movie is output.
- a total of five channels are provided for a 12-minute video movie, one channel larger than that of FIG.
- the maximum RS during standby is about 7.5 [min].
- CM video and the like are incorporated before the start of the, 1 block of the video movie, but this is the matrix described later with reference to FIG. ⁇ Executed by the switching operation of switcher 15. Therefore, a CM video or the like can be incorporated in any block 0 of video data as desired.
- FIG. 4 is an example of a video data creating apparatus that creates video data by four recording operations described in FIGS. 1B to 1E.
- This video data creation device is capable of reproducing video data generated by the video reproduction unit 1 such as a video disc player for reproducing video data recorded on a video disc, and the video data generated by the video generation unit 1.
- Encoder 3 that performs the efficiency coding process, and the compressed signal from encoder 3
- a high-speed digital recording device 9 such as a magneto-optical disk drive (MOD) or a hard disk drive (HDD) for recording digital data read by the control unit is provided.
- MOD magneto-optical disk drive
- HDD hard disk drive
- the video playback unit 1 is a device for playing back video data, but performs a cueing control at a predetermined recording position according to a control signal 11 from the control unit 7 to perform time control at the start of playback, or Accordingly, control is performed in synchronization with the external synchronization signal 13.
- the encoder 3 is a real-time video compression unit that performs video compression using an image compression technique such as MPEG2, and compresses video data.
- the FIFO memory 5 is a first-in, first-out, out-out memory section.
- a predetermined time is output from the encoder 3.
- the buffering operation is performed so that the compressed data is written at the timing and read at a predetermined timing and transmitted to the control unit 7.
- the control unit 7 controls the playback start time of the video playback unit 1, determines timing for reading out the compressed digital signal from the FIF memory 5, and controls the high-speed digital recording device 9. Set the timing to reach the end of the prescribed period.
- the high-speed digital recording device 9 comprises, for example, an M-D (magneto-optical disk drive) or an HDD (hard disk drive concealment). High-density recording is performed at the position explained in Fig. 1E.
- each of the first 30-minute data units A 0, A 1, ⁇ 2, and A 3 reproduced by the video reproduction unit 1 is compressed by the encoder 3. It is sent to the FIF memory 5 and is read out at a predetermined time by a timing signal from the control unit 7, and is read from the four-divisional portion shown in FIG. 1B of the recording medium of the high-speed digital recording device 9.
- the compressed data is distributed and distributed at predetermined locations starting from 0, A1, A2, and A3.
- the data ⁇ 0, ⁇ 1, ⁇ 2, 3 are distributed as compressed data ⁇ ⁇ 0, ⁇ 1, ⁇ 2, ⁇ 3 as shown in FIG. 1C. Recorded.
- the data C0, C1, C2, and C3 are distributed as compressed data CO, CI, C2, and C3 as shown in FIG. 1I). It is recorded as Similarly, by the fourth recording operation, the data D 0, D 1, D 2, and D 3 are separated as compressed data D 0, D 1, D 2, and D 3 as shown in FIG. 1D. 3 ⁇ 4 recorded.
- the high-density data shown in FIG. 1E is stored in the high-speed digital storage device 9.
- FIG. 5 shows an example of a high-density recording video data creating apparatus used in this case.
- This high-density recording video data creation / concealment basically includes four high-density recording IS video data creation units shown in FIG. That is, the high-density recording video data creation device includes a video playback unit 1-1,..., 1-4 for playing back the original video video data, and compression-encoding the video data played back by each video playback unit.
- Encoders 31 1, '"3-4, FI 1' for buffering the II-compressed signals from each encoder, 0 memory 5-1,... 5-4, and each FIF A control unit 7 for reading out the compressed and coded digital signal from the memory and controlling each of the above video disc devices;
- Video playback unit 1 -1, 1 -2, 1- provided with a high-speed digital recording and concealment 9 composed of, for example, M0D or HDD for recording digital signals read by the control unit 7 of the For , -4, the video cued at 0, 30, 60, and 90 minutes after the start of the video is output by the control signal 11 respectively.
- Encoders 3-1 and ⁇ ' ⁇ 3-4 perform compression encoding of video data in real time.
- Video data ⁇ 0, A 1, ⁇ 2, A 3 are input to the encoder 3-1, compressed, and input to the FIF 0 memory 5-1.
- Image data B 0,..., B 3 are input to the encoder 3-2, compressed, and written to the FIF 0 memory 5-2.
- Video data C 0, -C 3 are input to the encoder 3-3, compressed, and written to the FIF II memory 5-3.
- Video data D 0, ⁇ ' ⁇ ⁇ 3 is input to encoder 3-4 and compressed! 7 1 FO Memory written to 5-4.
- the control unit ⁇ reads out the compressed digital signals from the FIF ⁇ memories 5-1,..., 5 -4 in accordance with the order of the recording data as shown in FIG. Write fast.
- the video data for the ⁇ V0D system recorded in ⁇ density shown in FIG. 1 is created by one recording operation.
- the video playback unit i, the encoder 3 and the FIF ⁇ memory 5 are provided in a single-column parallel manner.
- FIG. 6 shows an example of an IS that incorporates C ⁇ video, etc. into the ⁇ V0D system.
- the cover-up is performed by a high-speed digital playback device 11 composed of, for example, a M ⁇ D or HDD, and a CM & Prom.
- Server 19 that can output video data such as CM video and promotion video.
- This device further sends a raw synchronization signal 21 to the high-speed digital playback device 11 and the CM & Promo. Server 19, and the FIF memory 13 1,-1 3 -4
- the read / write timing signal 25 is sent to the matrix switch 15 and the switching control signal 27 is supplied to the matrix switch 15 to send the data to be output to each channel #i to # 5.
- a control unit 29 for selectively performing switching control.
- the high-speed digital playback unit 11 can continuously and rapidly reproduce the video data for the NV0D system in which the video data for the NVDD system shown in FIG. 1E is recorded at high density. Consists of a disk drive (MOD) or a hard disk drive (HDD)
- the CM & Promo server 19 is a type of video server, and is a device that stores and distributes data such as CM video. As shown in Fig. 3B, data such as CM video compressed under the same conditions as the blocks of a video movie is stored, reproduced and output.
- the FIF memory 1 3 1,... 1 3 4 is the first-in-first-out memory (I '' IF 0) memory section, and the control section 29
- the compressed video signal from the high-speed digital recording device 11 is selectively written and read out in response to the timing signal, and the compressed video signal is read out to read the matrix.
- the matrix switch 15 that performs a buffering operation for transmitting the signal to the switch 15 depends on the control signal 27 from the control unit 29.
- 1 1 ⁇ Memory 13-1 Receives compressed video data from 13-4 or data such as compressed CM video from CM & Promo server 19, and is selective for each channel.
- Output to In a small-scale NV ⁇ D system used in hotels, etc., a decoder may be provided for each channel at this stage, and compressed video data may be transmitted after being decompressed.
- Encoders 17-1, ... 17-5 add a correction code to a series of CM video and video movie data sent from matrix 'switch 15 and add And sends them to each channel # 1 to # 5.
- the feature of this device is that the number of channels is one more than the number of FIF ⁇ memories 13 for reading the video movies stored in the high-speed digital playback device 11.
- FIG. 7 is a diagram illustrating the operation of a device that incorporates a CM video or the like into the NVOD system shown in FIG.
- FIG. 7 is compressed video data 12 output from the A-speed digital playback device 11 in response to a playback start signal 21 from the control unit 29.
- FIG. 7B shows compressed data 21 of the promotion video output from the CM & Prtno server 19 in response to the reproduction start signal 21 from the control unit 29.
- FIG. 7C to FIG. 7 show the FIF memory 13-1,... 13-4 in response to the timing signal 25 from the control unit 29 described in FIG.
- the video data shown in Fig. II is the video data that was selectively stored in each of the video data 12 and then output.
- FIF 0 memory 13-1 The compressed data of ⁇ to ⁇ 3 from the ⁇ block in FIG. 7, the compressed data of ⁇ 0 to ⁇ 3 from the second block, and the C ⁇ to C from the third block.
- the compressed data of (3) and the compressed data of D (! ⁇ D3) are selectively stored from the block 4 respectively.
- the FIF memory 13 -2 is 3 minutes later than the FIF memory 13-1 and the compression of ⁇ ⁇ to ⁇ 3, B0 to B3, C (3 to C3, D0 to D3,...)
- the FIF memory 13-3 has a delay of 30 minutes with respect to the FIF memory 13 ⁇ 0- ⁇ 3, ⁇
- the compressed video data of ⁇ to ⁇ 3, C 0 to C 3, D 0 to D 3, ... are stored as shown in Fig. 7F.
- FIG. 1K show that the matrix switcher 15 responds to the switching control signal 27 from the control unit 29, and the FIF memory 13 ...
- Compressed data such as compressed video from 13 -4 and 14 -1 -1 -1 -4 (W, 7G to 7F), and data from the CM & Prom server 19
- the compressed data 20 of the video is selectively output to each of the channels # 1 to # 5, and the video data includes a CM video and the like.
- the signals are supplied to each channel via encoders 17-1 and 17-5.
- the matrix switcher 15 transmits the data from the CM & Promo. Server 1 ⁇ for the first 30 minutes. Selectively output to channel # 1.
- the video data from the FIF memory 13-1, ... 13 4 is selectively output to channels # 5, # 2, # 3, # 4, respectively.
- the next 30 minutes fU] selectively outputs data from the CM & Promo server 19 to channel # 3.
- the video data from the FIF 0 memories 13-1,..., 13-4 are selectively output to channels # 5, # 1, # 2, # 4, respectively.
- the next 3 () minutes j selectively output data from the CM & Promo server 19 to channel # 4.
- the video data from the memory 13-1, ... 13-4 is selectively output to channels # 5, # 1, # 2, and # 3, respectively.
- data from the CM & Promo server 19 is selectively output to channel # 5.
- the video data from the memory 13-1, ... 13-4 is selectively output to channels # 4, # 1, # 2, and # 3, respectively.
- the next 30 minutes ill] selectively outputs data from the CM & Promo server 19 to channel # 5.
- video data from FIF I memories 13-1,..., 13-4 are selectively output to channels # 4, #I, # 2, and # 3, respectively.
- this order is repeated.
- Each data is sent to the user with an error correction code added by encoders 17-1,... 17-5 of each channel.
- the actually proposed NV ⁇ D system is used for 16 channels; therefore, in the case of 120 minutes of video projection, 17 channels are used. As a result, the waiting time is about 7.5 minutes at the maximum. Also, when CM video etc. is to be incorporated in 2 channels, it can be broadcast in the same way by setting the channel to 18 channels.
- CM video was incorporated. Broadcasting of video movies can be realized. In addition, the time of CM video etc. is limited to T VIDE0 .ZN [minutes] per 1 j place.
- CM videos etc. are T Pr . m . -Divide into values P obtained by ⁇ T d P (where P is an integer rounded up to the nearest whole number) (Therefore, C ⁇ video etc. of ⁇ 0 .ZL [minutes] or less per location.) , C blocks, such as C ⁇ video, may be inserted into any block ⁇ at the PiSi position of each video movie. This switching is performed by the matrix switch 15 described above.
- This entire broadcast B3 ⁇ 4 i] of Bido movie incorporating the CM Bido such as in this case, (T d + T P rom o./T d) ⁇ L - ⁇ , ⁇ ⁇ ⁇ . + T p rom o. [Min] Become D
- the number L of channels of the NV OD system is fixed, so that a video movie T VIDE of any net required time can be obtained.
- [Minute] and CM video for any broadcast time ⁇ -motion video T Prom .
- the video movie is successively broadcast to channel L with a time difference of T VIDE0 .ZL [minutes]. .
- T is used for CM videos. ensue..
- the storage medium for the data of the video movie and the storage medium for the data such as the CM video are separate, the contents of the CM video and the like can be arbitrarily updated.
- an NVOD system capable of incorporating CM video, promotion video, and the like, which are additional information programs, into a bidet program, which is a main program, and a method of broadcasting the same in an NVD system.
- an NVOD system in which an additional t-information program, such as a CM video and a promotion video, incorporated in a video program as a main program can be easily updated. Can be provided.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51873597A JP3401789B2 (ja) | 1995-11-13 | 1996-11-12 | ニアビデオオンディマンド・システム及びその放映方法 |
EP96937566A EP0804028B1 (en) | 1995-11-13 | 1996-11-12 | Near video on-demand system and televising method of the same |
DE69637410T DE69637410T2 (de) | 1995-11-13 | 1996-11-12 | Video-auf-anfragesystem mit verzögerung und fernsehverfahren dazu |
US08/902,604 US6233735B1 (en) | 1995-11-13 | 1997-07-10 | Near video-on-demand system and broadcasting method therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29443995 | 1995-11-13 | ||
JP7/294439 | 1995-11-13 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/902,604 Continuation US6233735B1 (en) | 1995-11-13 | 1997-07-10 | Near video-on-demand system and broadcasting method therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997018672A1 true WO1997018672A1 (fr) | 1997-05-22 |
Family
ID=17807793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/003320 WO1997018672A1 (fr) | 1995-11-13 | 1996-11-12 | Systeme de video presque sur demande et procede de television correspondant |
Country Status (5)
Country | Link |
---|---|
US (1) | US6233735B1 (ja) |
EP (1) | EP0804028B1 (ja) |
JP (1) | JP3401789B2 (ja) |
DE (1) | DE69637410T2 (ja) |
WO (1) | WO1997018672A1 (ja) |
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- 1996-11-12 DE DE69637410T patent/DE69637410T2/de not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
US6233735B1 (en) | 2001-05-15 |
EP0804028B1 (en) | 2008-01-23 |
DE69637410D1 (de) | 2008-03-13 |
EP0804028A4 (en) | 2000-12-27 |
DE69637410T2 (de) | 2009-01-22 |
EP0804028A1 (en) | 1997-10-29 |
JP3401789B2 (ja) | 2003-04-28 |
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