JPS5555682A - Coding unit for television signal - Google Patents

Coding unit for television signal

Info

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
Application number
JP12924678A
Other languages
Japanese (ja)
Inventor
Kazumoto Iinuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12924678A priority Critical patent/JPS5555682A/en
Publication of JPS5555682A publication Critical patent/JPS5555682A/en
Pending legal-status Critical Current

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.
JP12924678A 1978-10-20 1978-10-20 Coding unit for television signal Pending JPS5555682A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
JPS5527765A (en) Noise eliminating system
JPS54127623A (en) S/n improving device for television video signal
GB2003001A (en) Improvements in methods and apparatus for coding digital television signals
JPS5555682A (en) Coding unit for television signal
JPS5635580A (en) Noise suppressing device for television signal
JPS5471923A (en) Coding system for television signal
JPS57157696A (en) Processing system for encoding between frames
JPS56143776A (en) Interframe encoder
JPS54157429A (en) Picture signal processor
JPS6469182A (en) Movement compensation system for variable block size
JPS5330313A (en) Singing electronic system
JPS5376815A (en) Magnetic recorder/reproducer
JPS5447513A (en) Encoding system for television signal
JPS5459019A (en) Inter-frame encoding system
JPS6465930A (en) Predictive coding system
JPS55162687A (en) Encoding system between secondary prediction frames
JPS55143875A (en) Facsimile signal redundancy suppression coding system
JPS558124A (en) Movement detector for video signal
JPS54120571A (en) Dpcm-pcm converter
JPS52151516A (en) Coding device between compound differential frames
JPS5485631A (en) Digital transmission device
JPS54116120A (en) Quantizing method of video signal and its unit
JPS5531330A (en) Picture conversion device
JPS57184387A (en) Coding device of television signal
JPS5646367A (en) Picture processor