JPS5555682A - Coding unit for television signal - Google Patents
Coding unit for television signalInfo
- Publication number
- JPS5555682A JPS5555682A JP12924678A JP12924678A JPS5555682A JP S5555682 A JPS5555682 A JP S5555682A JP 12924678 A JP12924678 A JP 12924678A JP 12924678 A JP12924678 A JP 12924678A JP S5555682 A JPS5555682 A JP S5555682A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- forecast
- quantized
- circuit
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/112—Selection of coding mode or of prediction mode according to a given display mode, e.g. for interlaced or progressive display mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/136—Incoming video signal characteristics or properties
- H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To lower the reduction in the amount of information generated, by providing the means selecting either one of the fields forecast and frames forecase, providing the quantized circuit in which the quantized step can be varied, and selecting the fields forecast to the picture having rapid movement, through coarse quantized step. CONSTITUTION:The subtraction between the PCM signal from the terminal 1 and the forecase signal 25 from the multiplexer 7 is made at the subtractor 2, the signal forecast error signal is quantized at the quantization circuit 3, and the error signal quantized and the signal 25 are added at the adder 4. The local demodulation signal obtained by this addition is fed to the field delay circuit 5 to output the fields forecast signal 330 at the output, and the signal 30 is fed to the delay circuit 6, output is made to the output for the frames forecast signal 20, and the forecast signal 25 is outputted with the selection of the multiplexer 7 for the signals 30 and 20. the quantized step of the circuit 3 with this constitution is constituted so that it can be varied in quantization step, and the quantizaion step is controlled with the output of the control circuit 8 to monitor the output of the buffer memory 10.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12924678A JPS5555682A (en) | 1978-10-20 | 1978-10-20 | Coding unit for television signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12924678A JPS5555682A (en) | 1978-10-20 | 1978-10-20 | Coding unit for television signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5555682A true JPS5555682A (en) | 1980-04-23 |
Family
ID=15004807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12924678A Pending JPS5555682A (en) | 1978-10-20 | 1978-10-20 | Coding unit for television signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5555682A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61173593A (en) * | 1985-01-29 | 1986-08-05 | Nec Corp | Predictive encoding system |
JPH01251973A (en) * | 1988-03-31 | 1989-10-06 | Fuji Photo Film Co Ltd | Orthogonal transform coding device and orthogonal inverse transform decoding device for video signal |
WO1993013626A1 (en) * | 1991-12-27 | 1993-07-08 | Sony Corporation | Image data coding method, image data decoding method, image data coding device, image data decoding device, and image recording medium |
EP0588419A3 (en) * | 1992-09-14 | 1994-08-31 | Philips Patentverwaltung | |
US5510840A (en) * | 1991-12-27 | 1996-04-23 | Sony Corporation | Methods and devices for encoding and decoding frame signals and recording medium therefor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4973018A (en) * | 1972-11-13 | 1974-07-15 | ||
JPS5062719A (en) * | 1973-10-05 | 1975-05-28 | ||
JPS5324715A (en) * | 1976-08-20 | 1978-03-07 | Nippon Telegr & Teleph Corp <Ntt> | Coding system f or between frames |
-
1978
- 1978-10-20 JP JP12924678A patent/JPS5555682A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4973018A (en) * | 1972-11-13 | 1974-07-15 | ||
JPS5062719A (en) * | 1973-10-05 | 1975-05-28 | ||
JPS5324715A (en) * | 1976-08-20 | 1978-03-07 | Nippon Telegr & Teleph Corp <Ntt> | Coding system f or between frames |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61173593A (en) * | 1985-01-29 | 1986-08-05 | Nec Corp | Predictive encoding system |
JPH01251973A (en) * | 1988-03-31 | 1989-10-06 | Fuji Photo Film Co Ltd | Orthogonal transform coding device and orthogonal inverse transform decoding device for video signal |
WO1993013626A1 (en) * | 1991-12-27 | 1993-07-08 | Sony Corporation | Image data coding method, image data decoding method, image data coding device, image data decoding device, and image recording medium |
US5510840A (en) * | 1991-12-27 | 1996-04-23 | Sony Corporation | Methods and devices for encoding and decoding frame signals and recording medium therefor |
EP0588419A3 (en) * | 1992-09-14 | 1994-08-31 | Philips Patentverwaltung |
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