CN1328404A - Video recording-reproducing system - Google Patents
Video recording-reproducing system Download PDFInfo
- Publication number
- CN1328404A CN1328404A CN 00118342 CN00118342A CN1328404A CN 1328404 A CN1328404 A CN 1328404A CN 00118342 CN00118342 CN 00118342 CN 00118342 A CN00118342 A CN 00118342A CN 1328404 A CN1328404 A CN 1328404A
- Authority
- CN
- China
- Prior art keywords
- video
- audio signal
- order
- digital
- reproducing system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Television Signal Processing For Recording (AREA)
Abstract
An audio-video recording and reproducing system for TV programs is composed of demodulation unit for receiving the audio and video signals of M channels and demodulating out the required digital audio and video signals, processing unit for decoding the signals and storing them or directly sending them to projection unit, and projection unit for receiving the decoded P digital audio and video signals, processing them to generate Q audio and video signals, and outputting them to one or more TV system. Its advantage is high record efficiency.
Description
The present invention relates to a kind of video recording-reproducing system (Video Record System), but a plurality of Digital Television of particularly a kind of recording occurring continuously (Digital Television) channel signals also can be play the video recording-reproducing system of different TV programme simultaneously.
Because television system in the past is to utilize the NTSC/PAL analog signal to come transmitted image, the quality of image frame such as resolution (Resolution), very not desirable.Birth along with a kind of dynamic image compression standard MPEG 2 technology, the mankind have begun to enter into the epoch of image high image quality, digital television system, as high-res TV (High Definition Television), to replace traditional simulated television gradually, led the human high-quality audio-visual sound and light program of enjoying.
Traditional video cassette recorder (Video Cassette Recorder; VCR) be to cooperate simulated television and a kind of image recording played system that designs.Therefore, arriving in the face of numeral science and technology, advanced country has made general digital television system, aspect terrestrial broadcasting: ATSC (the Advanced Television Systems Committee) system of the U.S. is adopted in the U.S., Korea S and Taiwan, this system adopts 8-VSB (Vestigial Side-band) specification, Europe then is to use DVB (Digital VideoBroadcasting) system, this system adopts COFDM (Coded Orthogonal FrequencyDivision Multiplexing) specification, yet, traditional V
CR can only Analog signals, and the signal that can't receive these Digital Television specifications is with record or play digital television program.
In addition, traditional V
CR can only once write down or play the TV programme of a channel, perhaps the program of same channel can only write down or play, can't write down simultaneously and play, for example: VCR is at record 8 the program in evening, 9 of owners go back home and think to continue the record program on one side as a result, just turn on 8 the program that TV was recorded just now on one side, general VCR can't accomplish like this, if will see that the program of recording just can't continue to record uncompleted part.And traditional VCR also can't record the above program of two channels simultaneously, and this has the sense of blemish in an otherwise perfect thing often concerning many busy moderns.
Please refer to Fig. 1, it is the operational block figure of traditional videocorder.Videocorder 100 utilizes connectivity port (Port) 110 to connect antenna/cable (Antenna/Cable) 120, to receive the NTSC/PAL signal, select the channel program that will receive via tuner (Tuner) 130 again, and pass to register (Recorder) 140, for example be a kind of tape, record in addition.Television system 150 is to utilize tuner 160 to connect videocorder 100 in the connectivity port 170, obtain the view data in the middle of the register 140, to play the TV programme that videocorder 100 is recorded, perhaps television system selects channel programs to play by tuner 160 via the direct NTSC/PAL signal of reception antenna/cable 120 in connectivity port 170 and 110 again.
As mentioned above, the tradition videocorder only has a tuner, once can only select the program of a channel to be recorded or play, can't record or play plural channel program simultaneously, though, when videocorder during at recording TV program, television system also can be passed through antenna/cable broadcast program simultaneously, but just can't view and admire on one side for the channel program that videocorder has been recorded, continue to record on one side, for example: videocorder is recorded platform video road program since 8, prerecord is to 10 points, return at 9 in owner evening as a result, hope can be watched 8 program and continue to record the part of not recorded at 9 o'clock to 10 o'clock that obviously traditional videocorder can't reach this function immediately, because its internal record device is in program recording, can't rewinding go to play and recorded the part of finishing, thereby, can't satisfy the demand of society.
In view of this, main purpose of the present invention is providing a kind of video recording-reproducing system exactly, utilizes the multichannel idea, receiving digital television signal, also can play different programs simultaneously with the TV programme of recording a plurality of channels continuously, to increase the convenience that the user selects to record or play TV programme.
According to purpose of the present invention, a kind of video recording-reproducing system is proposed, its structure comprises: demodulating unit, processing unit and projection unit.Demodulating unit is in order to receive the channel video-audio signal of a corresponding M channel, and export the digital audio-video signal of a corresponding N channel, via directly delivering to the projection unit after the processing unit decoding, perhaps in processing unit, decode earlier and afterwards store, perhaps directly be stored in the processing unit.Then, the video-audio data of not decoding in the processing unit is delivered to the projection unit with it decoding or decoded P digital video-audio signal, is handled the back and produces Q video-audio signal, exports single or multiple television system to, and wherein M, N, P, Q are positive integer and N≤M.The television video signal of a plurality of channels of demodulating unit demodulation simultaneously, and the different sequence restrictions of processing unit, can when recording a channel, dial and put this channel program of different periods, also can carry out recording and playing of a plurality of different channels synchronously, thereby, improved the efficient of consumer's record tv.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and in conjunction with the accompanying drawings, be described in detail below:
The simple declaration of accompanying drawing:
Fig. 1 is the structure calcspar of traditional videocorder;
Fig. 2 is the video recording-reproducing system structure calcspar according to a preferred embodiment of the present invention;
Fig. 3 is the structure calcspar of demodulating unit among Fig. 2;
Fig. 4 is the processing unit structure calcspar among Fig. 2;
Fig. 5 is the structure calcspar of the projection unit among Fig. 2;
Fig. 6 is the schematic diagram that carries out graphical rule modulation and merging according to a preferred embodiment of the present invention.
With reference to Fig. 2, it is the video recording-reproducing system structure calcspar according to a preferred embodiment of the present invention.Video recording-reproducing system 200 comprises demodulating unit 210, processing unit 220 and projection unit 240.Demodulating unit 210 is in order to receive the channel video-audio signal V of a corresponding M channel (Channel)
1, and export the digital audio-video signal V of a corresponding N channel
C, wherein M, N are positive integer, and N≤M.Channel video-audio signal V
1Be the wireless or digital catv signal of antenna/cable 250 receptions, for example: above-mentioned ATSC or DVB signal.
In addition, processing unit 220 is N above-mentioned digital video-audio signal V of directly output or first line item
C, projection unit 240 then receives the above-mentioned N of part the digital video-audio signal V that processing unit 220 is directly exported
COr the P of reading and recording in processing unit 220 digital video-audio signal V
C, and Q output of output video-audio signal V
0To television system 260, wherein P, Q are positive integer.
With reference to Fig. 3, be structure calcspar according to demodulating unit among Fig. 2 of the present invention.Demodulating unit 210 also comprises splitter (Splitter) 300, a N tuner (Tuner) 320 and N demodulator (Demodulator) 340.Splitter 300 is in order to the channel video-audio signal V with a corresponding M channel
1Be split into N the first video-audio signal V
1Tuner 320 is in order to receive N the first video-audio signal V respectively
1, and export the second video-audio signal V of corresponding above-mentioned N channel
2, demodulator 340 is then in order to receive N the second video-audio signal V
2, and export above-mentioned N digital video-audio signal V
CDigital audio-video signal V wherein
CCompression data stream (Data Stream) for a kind of MPEG 2.
With reference to Fig. 4, be according to the processing unit structure calcspar among Fig. 2 of the present invention.Processing unit 220 also comprises arithmetic element 400, I/O (I/O) controller 420, memory 440 and decoding unit 460.Arithmetic element 400 is in order to control above-mentioned digital audio-video signal V
COutput or access, and memory 440 is storage these digital audio-video signals V
CMedium, 420 of I/O controllers are in order to accept the control of arithmetic element 400, memory 440 is made digital video-audio signal V
CAccess.
Above-mentioned memory 440 is a kind of hard disk drive (Hard Drive), DVD-R CD or DVD-RAM CD, and the advantage that or several mediums can the high frequency ranges of more effective performance multichannel can be simultaneously to a plurality of digital audio-video signal V
CStore, and the be not subjected to sequence restriction of (Sequence).In addition, decoding unit 460 is to be connected between arithmetic element 400 and the memory 440, in order to above-mentioned digital audio-video signal V
C Decode.Decoding unit 460 comprises T decoder (Decoder) 470, is a kind of MPEG-2 decoder or a kind of AC-3 decoder, and wherein T is a positive integer.
As shown in Figure 4, the arithmetic element 400 in the processing unit 220 receives above-mentioned N digital video-audio signal V
CThe time, be setting and needs according to system, can export projection unit 240 to by at least three kinds of modes.First kind of mode is that arithmetic element 400 receives digital audio-video signal V
CAfter, can be with video-audio signal V
CBe sent to decoding unit 460,, then export projection unit 240 to by arithmetic element 400 via transferring back to arithmetic element 400 again after the decoding.The second way is that arithmetic element 400 is with the digital audio-video signal V that receives
CPass through i/o controller 420 earlier, and be stored to memory 440, when desire is play program recording, be stored in the digital audio-video signal V in the memory 440 as the TV programme of recording
CCan be sent to arithmetic element 400 by i/o controller 420, be sent to decoding unit 460 decodings, then export projection unit 240 to by arithmetic element 400 again.The third mode then is the video-audio signal V that arithmetic element 400 receives
CAlso can be sent to decoding unit 460 decodings earlier, decoded signal transmits with i/o controller 420 via arithmetic element 400 and stores memory 440 into as the TV programme of recording, when desiring broadcast program, projection unit 240 is taken out and exported to arithmetic element 400 directly by memory 400.The path of video-audio data stream can be dynamically adjusted in above-mentioned system design, to reach projection unit 240.The path of video-audio data stream can be dynamically adjusted in above-mentioned system design, to reach the usefulness of most economical the best, is the characteristics of a processing unit for this reason.
With reference to Fig. 5, be according to the projection cellular construction calcspar among Fig. 2 of the present invention.Projection unit 240 also comprises R yardstick modulator (Scaler) 520, merge cells (Merge Unit) 540 and coding unit (Encoding Unit) 560, and wherein R is a positive integer, and N≤R.
Above-mentioned coding unit 560 outputs one or several video-audio signals V
0, not only can be used for utilizing many inputs and many output functions in the application that family also can be used for education and training and video wall, general family only needs this device can make the high image quality that the multi-section television set is enjoyed digital television signal in the family.Wherein showing unit 240 is the control of accepting arithmetic element 400, perhaps shows unit 240 and is a kind of digital signal processor (Digital Signal Processor).
Please refer to Fig. 6, illustrate the schematic diagram that carries out graphical rule modulation and merging according to a preferred embodiment of the present invention.Digital audio-video signal V
CAt least comprise V
D1, V
D2, V
D3, V
D4The decoded picture P of the corresponding channel CH1 of difference, CH2, CH3, CH4
D1, P
D2, P
D3, P
D4, through the 3rd video-audio signal V of yardstick modulator 520 back outputs
3Be respectively V
31, V
32, V
33, V
34, and corresponding in regular turn scaled down the 3rd image P
31, P
32, P
33, P
34, be combined into the 4th image P via merge cells 540 again
40, the 4th video-audio signal V of corresponding merge cells 540 outputs
4In V
40
Therefore, characteristic of the present invention is to utilize a plurality of tuners in the demodulating unit, write down the TV programme signal of a plurality of channels, and by yardstick modulator and merge cells combination in addition, on same television screen, play, in addition, because this video recording-reproducing system has a plurality of tuners, can record the TV programme of different channel simultaneously, and processing unit do not limit by sequence, and the user can watch the program of having recorded part simultaneously in recording a certain channel program process, therefore, increase the convenience of receiving television program.
The present invention quotes the multichannel notion, write down the Digital Television video-audio signal of different channel simultaneously, and be combined on the same phosphor screen and play, or can also export the program of different channel simultaneously, and utilize medium can when recording a channel, play this channel program of different periods, also can carry out recording and playing of a plurality of different channels synchronously, for busy society of modern times, provide high image quality and high efficiency recording playback as function, needn't any TV programme of liking of fear missing, and can satisfy the popular demand of consumption with record with broadcasting.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention should be with being as the criterion that the claim scope is defined.
Claims (23)
1. video recording-reproducing system in order to receiving M channel, and is exported Q video-audio signal, and each described channel includes a channel video-audio signal, and M, Q be positive integer, and this video recording-reproducing system comprises:
One demodulating unit, in order to receiving the channel video-audio signal of a described M channel, and generation and N the digital audio-video signal that channel is corresponding, wherein N is a positive integer, and N≤M;
One processing unit is in order to export or to write down described N digital video-audio signal; And
A described Q video-audio signal in order to the described N of part digital video-audio signal receiving the output of this processing unit or be recorded in P digital video-audio signal in this processing unit, and is exported in one projection unit, and wherein P, Q are positive integer.
2. video recording-reproducing system as claimed in claim 1, wherein the channel video-audio signal of each described M channel is a Digital Television video-audio signal.
3. video recording-reproducing system as claimed in claim 2, wherein said Digital Television video-audio signal are the wireless image-sound signal that an antenna receives.
4. video recording-reproducing system as claimed in claim 2, wherein said Digital Television video-audio signal are the wired video-audio signal that a cable receives.
5. video recording-reproducing system as claimed in claim 2, a wherein said Q video-audio signal comprise digital audio-video signal and simulation video-audio signal.
6. video recording-reproducing system as claimed in claim 1, wherein said demodulating unit also comprises:
One splitter is in order to be respectively described M channel video-audio signal N first video-audio signal;
N tuner, each is in order to receiving each described first video-audio signal respectively, and one second video-audio signal of corresponding each the described N channel of output; And
N demodulator, each is in order to receiving each described second video-audio signal respectively, and exports each described N digital video-audio signal.
7. video recording-reproducing system as claimed in claim 6, wherein those channel video-audio signals are MPEG2 packed data stream.
8. video recording-reproducing system as claimed in claim 6, wherein this processing unit also comprises:
One arithmetic element is in order to control the output and the access of described N digital video-audio signal;
One memory is in order to store described digital audio-video signal;
One I/O (I/O) controller is in order to accept the control of this processing unit, the described digital audio-video signal in this memory of access; And
One decoding unit is connected in described arithmetic element, in order to described digital audio-video signal is decoded.
9. video recording-reproducing system as claimed in claim 8, wherein this memory is a hard disk.
10. video recording-reproducing system as claimed in claim 8, wherein this memory is a DVD-R CD.
11. video recording-reproducing system as claimed in claim 8, wherein this memory is a DVD-RAM CD.
12. video recording-reproducing system as claimed in claim 8, wherein this decoding unit comprises T decoder, and wherein T is a positive integer.
13. video recording-reproducing system as claimed in claim 12, wherein each described decoder be at least a MPEG-2 decoder and AC-3 decoder one of them.
14. video recording-reproducing system as claimed in claim 8, wherein this projection unit also comprises:
R yardstick modulator, in order to the described N of part digital video-audio signal or described P digital video-audio signal being carried out the modulation of scale, and S the 3rd video-audio signal of output, wherein R, S are positive integer, and N≤R;
One merge cells is in order to merge into Q the 4th video-audio signal with described S the 3rd video-audio signal; And
One coding unit in order to described Q the 4th video-audio signal is encoded, and is exported described Q and is exported video-audio signal.
15. video recording-reproducing system as claimed in claim 14, wherein said projection unit are the control of accepting described arithmetic element.
16. video recording-reproducing system as claimed in claim 14, wherein this projection unit is a digital signal processor.
17. a video recording-reproducing system in order to receiving M channel, and is exported Q video-audio signal, each described channel includes a channel video-audio signal, and M, Q be positive integer, and this video recording-reproducing system comprises:
One demodulating unit, in order to receiving the channel video-audio signal of a described M channel, and generation and N the digital audio-video signal that channel is corresponding, wherein N is a positive integer, and N≤M;
One processing unit is in order to receive described N digital video-audio signal; And a projection unit, in order to obtaining P digital video-audio signal via this processing unit, and export a described Q video-audio signal, wherein P is a positive integer.
18. video recording-reproducing system as claimed in claim 17, wherein each those channel video-audio signal is a Digital Television video-audio signal.
19. video recording-reproducing system as claimed in claim 17, wherein this demodulating unit also comprises:
One splitter is in order to be split into described channel video-audio signal N first video-audio signal;
N tuner, each is in order to receiving each described first video-audio signal respectively, and one second video-audio signal of corresponding each the described N channel of output; And
N demodulator in order to receiving those second video-audio signals, and exported those digital audio-video signals.
20. video recording-reproducing system as claimed in claim 19, wherein this processing unit comprises:
One arithmetic element is in order to control the output and the access of described N digital video-audio signal;
One memory is in order to store those digital audio-video signals;
One I/O controller is in order to accept the control of this processing unit, the described digital audio-video signal in this memory of access; And
One decoding unit is connected in this arithmetic element, in order to described digital audio-video signal is decoded.
21. video recording-reproducing system as claimed in claim 20, wherein this projection unit also comprises:
R yardstick modulator, in order to those P digital video-audio signals being carried out the modulation of scale, and S the 3rd video-audio signal of output, wherein S, R are positive integer, and N≤R;
One merge cells is in order to merge into Q the 4th video-audio signal with described S the 3rd video-audio signal; And
One coding unit in order to described Q the 4th video-audio signal is encoded, and is exported described Q and is exported video-audio signal.
22. video recording-reproducing system as claimed in claim 21, wherein this projection unit is the control of accepting this arithmetic element.
23. video recording-reproducing system as claimed in claim 21, wherein this projection unit is a digital signal processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00118342 CN1328404A (en) | 2000-06-14 | 2000-06-14 | Video recording-reproducing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00118342 CN1328404A (en) | 2000-06-14 | 2000-06-14 | Video recording-reproducing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1328404A true CN1328404A (en) | 2001-12-26 |
Family
ID=4587177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00118342 Pending CN1328404A (en) | 2000-06-14 | 2000-06-14 | Video recording-reproducing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1328404A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223511A (en) * | 2011-06-13 | 2011-10-19 | Tcl集团股份有限公司 | Television program recording and broadcasting method and system, and television device |
-
2000
- 2000-06-14 CN CN 00118342 patent/CN1328404A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223511A (en) * | 2011-06-13 | 2011-10-19 | Tcl集团股份有限公司 | Television program recording and broadcasting method and system, and television device |
| CN102223511B (en) * | 2011-06-13 | 2014-03-12 | Tcl集团股份有限公司 | Television program recording and broadcasting method and system, and television device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7657149B2 (en) | Method and apparatus for storing a stream of video data on a storage medium | |
| KR100511250B1 (en) | Digital Audio / Video (A / V) Systems | |
| CN1819639A (en) | Recording and playback apparatus and method | |
| KR20060088303A (en) | Apparatus and method recording/playing moving picture in digital broadcasting receiver | |
| WO1997046013A1 (en) | Digital broadcast program recording and reproducing device | |
| CN100452830C (en) | Digital video information processing device and method | |
| KR100481246B1 (en) | Program signal recording/reproducing apparatus, and program signal reproducing apparatus | |
| US20070025702A1 (en) | Method and system for providing audio-only recording of an audio/video signal | |
| KR100747530B1 (en) | Personal video recorder system and method for reproducing a broadcasting signal in the system | |
| US20030053798A1 (en) | Personal video recorder | |
| KR20040023009A (en) | Multi channel recordable PVR | |
| CN1747036A (en) | Broadcast program recording method and broadcast receiver, and information recorder for the same | |
| US20040258389A1 (en) | Pass through mode for a personal video recorder | |
| JPH099193A (en) | Multichannel recording and reproducing device | |
| CN1328404A (en) | Video recording-reproducing system | |
| KR100565042B1 (en) | Apparatus and method for dual recording and/or playing plural digital audio/video programs | |
| US20050226320A1 (en) | Circuit, apparatus and method for storing audiovisual data | |
| JP2001008144A (en) | Video device | |
| KR20010078998A (en) | Digital Video Recorder using the MPEG-4 motion video compression technology | |
| JP2001505392A (en) | Method and apparatus for recording digital television signals | |
| KR100912308B1 (en) | Simultaneous regeneration method of recording stream of TV broadcasting | |
| CN1233158C (en) | Multifunctional video disk player supporting download playing | |
| TW491992B (en) | Video record system | |
| US20070055996A1 (en) | Full digital home cinema | |
| JP2001245262A (en) | Digital video recording device having plural video sources and multiplexer for digital video recording device of this kind |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |