CN105025313A - Video sending and receiving method and device and video transmission method and system - Google Patents
Video sending and receiving method and device and video transmission method and system Download PDFInfo
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
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Abstract
The invention provides a video sending and receiving method and device and a video transmission method and system. The video transmission method includes selecting subcarriers, utilizing the subcarriers to perform digital quadrature amplitude modulation on video source data, thus obtaining video encoding data and sending the video encoding data; acquiring the video encoding data, utilizing the subcarriers to perform digital quadrature amplitude demodulation on video source data, thus obtaining video decoding data and storing the video decoding data. The implementing the method provided by the invention, the subcarriers are utilized for performing digital encoding and decoding on video data, so that encoding can be realized through one-level addition and subtraction and decoding can be realized through two-level addition and subtraction and one-level multiplication and addition. The method is simple and convenient to implement. Requirements for complex operation of video decoding and encoding are reduced and the method becomes suitable for simple logic design.
Description
Technical field
The present invention relates to field of video transmission, particularly relate to a kind of video transmission method and device, method of reseptance and device, transmission method and system.
Background technology
Transmission of video carries out compressed encoding by transmitting terminal to video, then carry out decoding recovery video data, to reduce the data bandwidth of transmission by receiving terminal.
Current conventional video compression coding has the MPEG-2/MPEG-4 coding standard of International Organization for standardization ISO, the H.262/H.263+ coding standard of International Telecommunication Association ITU-T and two tissues to combine the H.264 coding standard etc. of formulation, about 50:1 and higher compression ratio can be realized as H.264 encoded, but H.264 wait coding to generally comprise prediction, conversion, quantize, the process such as filtering and entropy code, realizes needing higher logical resource.But in practice, FPGA needs the logical resource of more than 10K LUT4 for coding, and the logical resource of more than 35KLUT4 is used for decoding, and real-time video encoding and decoding speed is not high, and the logical design being not suitable for light-type uses.
Therefore, how providing a kind of video transmission method going for light-type logical design and use, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
The invention provides a kind of video transmission method and device, method of reseptance and device, transmission method and system, to solve the problem that existing video transmission technologies is not suitable for light-type logical design use.
The invention provides a kind of video transmission method, it comprises: select subcarrier; Utilize subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtain video data encoder; Send video data encoder.
Further, utilize subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data to comprise: obtain the color difference signal U in the two-dimensional pixel dot matrix of video source data and color difference signal V, color difference signal U and color difference signal V is carried out quadrature amplitude modulation based on subcarrier, and be added with the brightness signal Y in two-dimensional pixel dot matrix, obtain video data encoder Z.
Further, subcarrier is selected to comprise: the video pixel dot frequency fp obtaining video source data, using the sizes values of 1/4th of video pixel dot frequency fp as subcarrier frequency fc.
The invention provides a kind of video receiving method, it comprises: obtain video data encoder; Utilize subcarrier to carry out the decoding of digital quadrature amplitude to video data encoder, obtain decoded video data; Store video decoded data.
Further, utilize subcarrier to described video data encoder carry out digital quadrature amplitude decoding comprise: according to video line mode buffer memory described in video data encoder; Use comb filter to adopt the data of adjacent lines to carry out the mode added and subtracted, process the two-dimensional pixel dot matrix data in described video data encoder, obtain color difference signal C, brightness signal Y; By low-pass FIR filter, described color difference signal C and described subcarrier are carried out product process, obtain color difference signal U and color difference signal V.
Further, also comprise: the video pixel dot frequency fp obtaining video source data, using the sizes values of 1/4th of video pixel dot frequency fp as subcarrier frequency fc.
The invention provides a kind of video transmission method, it comprises: select subcarrier, utilize subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtains video data encoder, sends video data encoder; Obtain video data encoder, utilize subcarrier to carry out the decoding of digital quadrature amplitude to video data encoder, obtain decoded video data, store video decoded data.
Further, also comprise: the video pixel dot frequency fp obtaining video source data, using the sizes values of 1/4th of video pixel dot frequency fp as subcarrier frequency fc.
The invention provides a kind of video transmission device, it comprises: select module, for selecting subcarrier; Coding module, for utilizing subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtains video data encoder; Sending module, for sending video data encoder.
Further selection module for obtaining the video pixel dot frequency fp of video source data, using the sizes values of 1/4th of video pixel dot frequency fp as subcarrier frequency fc.
The invention provides a kind of video receiving apparatus, it comprises: acquisition module, for obtaining video data encoder; Decoder module, for utilizing subcarrier to carry out the decoding of digital quadrature amplitude to video data encoder, obtains decoded video data; Memory module, for store video decoded data.
Further, decoder module for obtaining the video pixel dot frequency fp of video source data, using the sizes values of 1/4th of video pixel dot frequency fp as subcarrier frequency fc.
The invention provides a kind of Video transmission system, it comprises: video transmission device, for selecting subcarrier, utilizes subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtains video data encoder, sends video data encoder; Video receiving apparatus, for obtaining video data encoder, utilizes subcarrier to carry out the decoding of digital quadrature amplitude to video data encoder, obtains decoded video data, store video decoded data.
Beneficial effect of the present invention:
The invention provides a kind of new video transmission method, by utilizing subcarrier, digital coding decoding is carried out to video data, make it possible to use one-level plus and minus calculation to complete coding, two-stage plus-minus and one-level FIR multiply-add operation complete decode procedure, realize simple and convenient, reduce the complex calculation demand of coding and decoding video, adapted to light-type logical design and used.
Accompanying drawing explanation
The structural representation of the Video transmission system that Fig. 1 provides for first embodiment of the invention;
The flow chart of the video transmission method that Fig. 2 provides for second embodiment of the invention;
The flow chart of the video transmission method that Fig. 3 provides for third embodiment of the invention;
Fig. 4 is the data format change schematic diagram in third embodiment of the invention.
Embodiment
Now by embodiment mode by reference to the accompanying drawings the present invention made and further annotate explanation.
First embodiment:
The structural representation of the network element apparatus for grouping that Fig. 1 provides for first embodiment of the invention, as shown in Figure 1, in the present embodiment, network element apparatus for grouping 1 provided by the invention comprises:
Video transmission device 11, for selecting subcarrier, utilizes subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtains video data encoder, sends video data encoder;
Video receiving apparatus 12, for obtaining video data encoder, utilizes subcarrier to carry out the decoding of digital quadrature amplitude to video data encoder, obtains decoded video data, store video decoded data.
Concrete, as shown in Figure 1, the invention provides a kind of video transmission device 11, it comprises:
Select module 111, for selecting subcarrier;
Coding module 112, for utilizing subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtains video data encoder;
Sending module 113, for sending video data encoder.
In certain embodiments, coding module 112 in above-described embodiment is for obtaining color difference signal U in the two-dimensional pixel dot matrix of video source data and color difference signal V, color difference signal U and color difference signal V is carried out quadrature amplitude modulation based on subcarrier, and be added with the brightness signal Y in two-dimensional pixel dot matrix, obtain video data encoder Z.
In certain embodiments, the coding module 112 in above-described embodiment is also covert for carrying out interlacing to subcarrier.
In certain embodiments, the selection module 111 in above-described embodiment, for obtaining the video pixel dot frequency fp of video source data, selects the subcarrier frequency fc of subcarrier according to video pixel dot frequency fp.
In certain embodiments, the selection module 111 in above-described embodiment for using the sizes values of 1/4th of video pixel dot frequency fp as subcarrier frequency fc.
Concrete, as shown in Figure 1, the invention provides a kind of video receiving apparatus 12, it comprises:
Acquisition module 121, for obtaining video data encoder;
Decoder module 122, for utilizing subcarrier to carry out the decoding of digital quadrature amplitude to video data encoder, obtains decoded video data;
Memory module 123, for store video decoded data.
In certain embodiments, the acquisition module 121 in above-described embodiment for receiver, video coded data, according to the mode buffered video coded data of video line.
In certain embodiments, the decoder module 122 in above-described embodiment obtains color difference signal C, brightness signal Y for utilizing Automated generalization video data encoder in the ranks; Color difference signal C and subcarrier are carried out product process, obtains color difference signal U and color difference signal V.
In certain embodiments, the decoder module 122 in above-described embodiment carries out for adopting the data of adjacent lines the mode added and subtracted, and the two-dimensional pixel dot matrix data in process video data encoder, obtain color difference signal C, brightness signal Y.
In certain embodiments, the decoder module 122 in above-described embodiment obtains color difference signal C, brightness signal Y for using comb filter process video data encoder.
In certain embodiments, the decoder module 122 in above-described embodiment, for being carried out digital quadrature Modulation and Amplitude Modulation filtering process by low-pass FIR filter, obtains color difference signal U and color difference signal V.
In certain embodiments, the decoder module 122 in above-described embodiment, also for obtaining the video pixel dot frequency fp of video source data, selects the subcarrier frequency fc of subcarrier according to video pixel dot frequency fp.
In certain embodiments, the decoder module 122 in above-described embodiment for using the sizes values of 1/4th of video pixel dot frequency fp as subcarrier frequency fc.
Second embodiment:
The flow chart of the video transmission method that Fig. 2 provides for second embodiment of the invention, as shown in Figure 2, in the present embodiment, video transmission method provided by the invention comprises the following steps:
S201: select subcarrier, utilize subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtains video data encoder, sends video data encoder;
S202: obtain video data encoder, utilize subcarrier to carry out the decoding of digital quadrature amplitude to video data encoder, obtains decoded video data, store video decoded data.
Concrete, the invention provides a kind of video transmission method, it comprises: select subcarrier; Utilize subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtain video data encoder; Send video data encoder.
In certain embodiments, utilize subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data to comprise in above-described embodiment: obtain the color difference signal U in the two-dimensional pixel dot matrix of video source data and color difference signal V, color difference signal U and color difference signal V is carried out quadrature amplitude modulation based on subcarrier, and be added with the brightness signal Y in two-dimensional pixel dot matrix, obtain video data encoder Z.
In certain embodiments, the method in above-described embodiment also comprises: carry out interlacing to subcarrier covert.
In certain embodiments, the selection subcarrier in above-described embodiment comprises: the video pixel dot frequency fp obtaining video source data, selects the subcarrier frequency fc of subcarrier according to video pixel dot frequency fp.
In certain embodiments, comprising according to the subcarrier frequency fc of video pixel dot frequency fp selection subcarrier in above-described embodiment: using the sizes values of 1/4th of video pixel dot frequency fp as subcarrier frequency fc.
Concrete, the invention provides a kind of video receiving method, it comprises: obtain video data encoder; Utilize subcarrier to carry out the decoding of digital quadrature amplitude to video data encoder, obtain decoded video data; Store video decoded data.
In certain embodiments, the acquisition video data encoder in above-described embodiment comprises: receiver, video coded data, according to the mode buffered video coded data of video line.
In certain embodiments, utilize subcarrier to carry out the decoding of digital quadrature amplitude to video data encoder to comprise in above-described embodiment: utilize Automated generalization video data encoder in the ranks to obtain color difference signal C, brightness signal Y; Color difference signal C and subcarrier are carried out product process, obtains color difference signal U and color difference signal V.
In certain embodiments, utilization in above-described embodiment Automated generalization video data encoder acquisition in the ranks color difference signal C, brightness signal Y comprise: adopt the data of adjacent lines to carry out the mode added and subtracted, two-dimensional pixel dot matrix data in process video data encoder, obtain color difference signal C, brightness signal Y.
In certain embodiments, the method in above-described embodiment is specially and uses comb filter process video data encoder to obtain color difference signal C, brightness signal Y.
In certain embodiments, in above-described embodiment, color difference signal C and subcarrier are carried out product process, obtain color difference signal U and color difference signal V to comprise: carry out digital quadrature Modulation and Amplitude Modulation filtering process by low-pass FIR filter, obtain color difference signal U and color difference signal V.
In certain embodiments, the method in above-described embodiment also comprises: the video pixel dot frequency fp obtaining video source data, selects the subcarrier frequency fc of subcarrier according to video pixel dot frequency fp.
In certain embodiments, comprising according to the subcarrier frequency fc of video pixel dot frequency fp selection subcarrier in above-described embodiment: using the sizes values of 1/4th of video pixel dot frequency fp as subcarrier frequency fc.
Now in conjunction with embody rule scene the present invention done and further annotate explanation.
3rd embodiment:
The flow chart of the data transmission method that Fig. 3 provides for third embodiment of the invention, as shown in Figure 3, in the present embodiment, data transmission method provided by the invention comprises the following steps:
S301: transmitting terminal obtains the two-dimensional pixel dot matrix of video source data.
In the present embodiment, two-dimensional pixel dot matrix is as shown in a part in Fig. 4, and video source pixel signal is YUV [24bit], i.e. P [n]={ Y [n], U [n], V [n] }, video pixel dot frequency fp (i.e. the change frequency of pixel).
S302: transmitting terminal determination subcarrier, utilizes subcarrier to encode to video source data.
In the present embodiment, 1/4 (i.e. the fp/4) that the frequency f c of the subcarrier used is pixel frequency f p.
Quadrature amplitude modulation based on subcarrier is carried out to color difference signal U and V, keeps brightness signal Y constant, after video information coding be:
Z[n]＝Y[n]+sin(2л*fc*n/fp)*U[n]+cos(2л*fc*n/fp)*V[n]。
For convenience of video-information decoding, subcarrier adopts interlacing covert, often has 180 degree of phase differences in the ranks, therefore:
Even number line video information is:
Z[n]＝Y[n]-sin(2л*fc*n/fp)*U[n]-cos(2л*fc*n/fp)*V[n]＝Y[n]+sin(л*n/2)*U[n]+cos(л*n/2)*V[n]；
Odd-numbered line video information is:
Z[n]＝Y[n]+sin(2л*fc*n/fp)*U[n]+cos(2л*fc*n/fp)*V[n]＝Y[n]-sin(л*n/2)*U[n]-cos(л*n/2)*V[n]；
After carrying out simplify processes, video information is:
Z[n]＝Y[n]+sin(л*n/2)*U[n]+cos(л*n/2)*V[n]；
It is as shown in table 1 below that corresponding informance simplifies table:
| Row pixel n | 0 | 1 | 2 | 3 | 4 | … |
| sin(л*n/2) | 0 | 1 | 0 | -1 | 0 | … |
| cos(л*n/2) | 1 | 0 | -1 | 0 | 1 | … |
| Z[n] | Y+V | Y+U | Y-V | Y-U | Y+V | … |
Table 1
Encoding scheme can be reduced to one-level add operation, and color difference signal U and V quadrature amplitude modulation to high frequency about fc, wherein brightness signal Y keeps primary frequency scope constant, and video data encoder Z signal intercepts as 8bit, realizes the compression that YUV-24bit turns Z-8bit.
In the present embodiment, two-dimensional pixel dot matrix changes as shown in b part in Fig. 4.
S303: transmitting terminal sends video data encoder.
Transmitting terminal transmits (3) the data after coding, realizes transmission data bandwidth and reduces to 1/3 of video source.
S304: receiving terminal receives and buffered video coded data.
Receiving terminal receives Z-8bit data group, and carry out buffer memory by the mode of video line, in the present embodiment, two-dimensional pixel dot matrix changes as shown in c part in Fig. 4.
S305: receiving terminal decoded video coded data obtains decoded video data, and stores.
The video data encoder Z signal of receiving terminal to the buffer memory based on row cache carries out the decoding of digital quadrature amplitude.
Because the color change in the ranks of general video information is little, can directly adopt relation in the ranks to process, i.e. comb filter, carries out the separation of YUV.Video interlacing in a disguised form encode after information as shown in table 2 below:
Table 2
This step as shown in d part in Fig. 4, concrete,
Comb filter adopts the data of adjacent lines to carry out plus-minus and obtains brightness signal Y and color difference signal C (C is the composite signal of U and V), concrete,
Two row post processing modes:
Y[m,n]＝(Z[m,n]+Z[m+1,n])/2C[m,n]＝(Z[m,n]-Z[m+1,n])/2；
Two row pretreatment mode:
Y[m,n]＝(Z[m,n]+Z[m-1,n])/2C[m,n]＝(Z[m-1,n]-Z[m,n])/2；
Three row relax modes:
Y[m,n]＝(2*Z[m,n]+Z[m-1,n]+Z[m+1,n])/4；
C[m,n]＝(Z[m-1,n]+Z[m+1,n]–2*Z[m,n])/4；
Color difference signal C [n] data are:
Z[n]–Y[n]＝sin(л*n/2)*U[n]+cos(л*n/2)*V[n]。
With subcarrier, product process is carried out to color difference signal C [n], restores the original U before carrier wave and V signal:
C[n]*2*sin(л*n/2)＝U[n]–U[n]*cos(л*n)+V[n]*sin(л*n)；
C[n]*2*cos(л*n/2)＝V[n]+V[n]*cos(л*n)+U[n]*sin(л*n)；
Wherein sin (л * n) and cos (л * n) for frequency be fs/2 signal, V and U is low frequency signal, can carry out digital quadrature Modulation and Amplitude Modulation filtering process, can isolate carrier chrominance signal U and V by low-pass FIR filter.
Identical with encryption algorithm theory, sin (л * n/2) and cos (л * n/2) is still 0,1,-1 constant, therefore employing can complete above product term calculating simply by plus and minus calculation, low-pass FIR filter needs to select suitable figure place process according to design, realizes with multiply-add operation, therefore, decoding scheme can be reduced to two-stage add operation and one-level FIR product calculation just can go out brightness signal Y, carrier chrominance signal U and V by separating reducing.
In the present embodiment, adopt and carry out, based on the digital quadrature Modulation and Amplitude Modulation of (1/4 dot frequency) subcarrier, obtaining coded data Z to color difference signal U and V; Like this, transmitting terminal transmits coded data Z to receiving terminal with the bandwidth of former video data 1/3; Receiving terminal carries out buffer memory to coded data Z, then based in the ranks relation, adopts comb filter to carry out light tone Y and is separated with aberration composite signal C, and aberration composite signal C, by being in harmonious proportion low-pass FIR filter based on subcarrier solution, distinguishes reduced color difference signal U and V.The present embodiment uses one-level plus and minus calculation to complete coding, and two-stage plus-minus and one-level FIR multiply-add operation complete decode procedure, need the fpga logic resource of 2KLUT4 can complete whole Code And Decode processes altogether, realize simple and convenient.
In summary, by enforcement of the present invention, at least there is following beneficial effect:
By utilizing subcarrier, digital coding decoding is carried out to video data, make it possible to use one-level plus and minus calculation to complete coding, two-stage plus-minus and one-level FIR multiply-add operation complete decode procedure, need the fpga logic resource of 2K LUT4 can complete whole Code And Decode processes altogether, realize simple and convenient, reduce the complex calculation demand of coding and decoding video, adapted to light-type logical design and used.
Below be only the specific embodiment of the present invention; not any pro forma restriction is done to the present invention; every above execution mode is done according to technical spirit of the present invention any simple modification, equivalent variations, combination or modification, all still belong to the protection range of technical solution of the present invention.
Claims (12)
1. a video transmission method, is characterized in that, comprising:
Select subcarrier;
Utilize described subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtain video data encoder;
Send described video data encoder.
2. video transmission method as claimed in claim 1, it is characterized in that, describedly utilize described subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data to comprise: obtain the color difference signal U in the two-dimensional pixel dot matrix of described video source data and color difference signal V, described color difference signal U and color difference signal V is carried out quadrature amplitude modulation based on described subcarrier, and be added with the brightness signal Y in described two-dimensional pixel dot matrix, obtain described video data encoder Z.
3. video transmission method as claimed in claim 1 or 2, it is characterized in that, described selection subcarrier comprises: the video pixel dot frequency fp obtaining described video source data, using the sizes values of 1/4th of described video pixel dot frequency fp as described subcarrier frequency fc.
4. a video receiving method, is characterized in that, comprising:
Obtain video data encoder;
Utilize subcarrier to carry out the decoding of digital quadrature amplitude to described video data encoder, obtain decoded video data;
Store described decoded video data.
5. video receiving method as claimed in claim 4, is characterized in that, describedly utilizes subcarrier to carry out the decoding of digital quadrature amplitude to described video data encoder to comprise: according to video line mode buffer memory described in video data encoder; Use comb filter to adopt the data of adjacent lines to carry out the mode added and subtracted, process the two-dimensional pixel dot matrix data in described video data encoder, obtain color difference signal C, brightness signal Y; By low-pass FIR filter, described color difference signal C and described subcarrier are carried out product process, obtain color difference signal U and color difference signal V.
6. the video receiving method as described in claim 4 or 5, is characterized in that, also comprises: the video pixel dot frequency fp obtaining described video source data, using the sizes values of 1/4th of described video pixel dot frequency fp as described subcarrier frequency fc.
7. a video transmission method, is characterized in that, comprising:
Select subcarrier, utilize described subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtain video data encoder, send described video data encoder;
Obtain video data encoder, utilize described subcarrier to carry out the decoding of digital quadrature amplitude to described video data encoder, obtain decoded video data, store described decoded video data.
8. a video transmission device, is characterized in that, comprising:
Select module, for selecting subcarrier;
Coding module, for utilizing described subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtains video data encoder;
Sending module, for sending described video data encoder.
9. video transmission device as claimed in claim 8, is characterized in that, described selection module for obtaining the video pixel dot frequency fp of described video source data, using the sizes values of 1/4th of described video pixel dot frequency fp as described subcarrier frequency fc.
10. a video receiving apparatus, is characterized in that, comprising:
Acquisition module, for obtaining video data encoder;
Decoder module, for utilizing subcarrier to carry out the decoding of digital quadrature amplitude to described video data encoder, obtains decoded video data;
Memory module, for storing described decoded video data.
11. video receiving apparatus as claimed in claim 10, it is characterized in that, described decoder module for obtaining the video pixel dot frequency fp of described video source data, using the sizes values of 1/4th of described video pixel dot frequency fp as described subcarrier frequency fc.
12. 1 kinds of Video transmission systems, is characterized in that, comprising:
Video transmission device, for selecting subcarrier, utilizes described subcarrier to carry out digital quadrature Modulation and Amplitude Modulation to video source data, obtains video data encoder, sends described video data encoder;
Video receiving apparatus, for obtaining video data encoder, utilizes described subcarrier to carry out the decoding of digital quadrature amplitude to described video data encoder, obtains decoded video data, stores described decoded video data.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031459A (en) * | 1987-07-27 | 1989-03-01 | 通用电气公司 | Compatible widescreen television system with another kind of subcarrier of quadrature modulation |
| CN1051835A (en) * | 1989-11-17 | 1991-05-29 | Rca许可公司 | Adaptive multistandard video comb filter |
| US5657387A (en) * | 1994-10-25 | 1997-08-12 | Sony Corporation | Video signal format converting circuit |
| CN1160966A (en) * | 1995-08-31 | 1997-10-01 | 德克萨斯仪器股份有限公司 | Color demodulation for digital television |
| CN101552927A (en) * | 2009-05-13 | 2009-10-07 | 炬力集成电路设计有限公司 | Signal coder and signal coding method |
-
2015
- 2015-07-23 CN CN201510439786.1A patent/CN105025313A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031459A (en) * | 1987-07-27 | 1989-03-01 | 通用电气公司 | Compatible widescreen television system with another kind of subcarrier of quadrature modulation |
| CN1051835A (en) * | 1989-11-17 | 1991-05-29 | Rca许可公司 | Adaptive multistandard video comb filter |
| US5657387A (en) * | 1994-10-25 | 1997-08-12 | Sony Corporation | Video signal format converting circuit |
| CN1160966A (en) * | 1995-08-31 | 1997-10-01 | 德克萨斯仪器股份有限公司 | Color demodulation for digital television |
| CN101552927A (en) * | 2009-05-13 | 2009-10-07 | 炬力集成电路设计有限公司 | Signal coder and signal coding method |
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