JPS56152386A - Coding system of picture signal - Google Patents

Coding system of picture signal

Info

Publication number
JPS56152386A
JPS56152386A JP5425280A JP5425280A JPS56152386A JP S56152386 A JPS56152386 A JP S56152386A JP 5425280 A JP5425280 A JP 5425280A JP 5425280 A JP5425280 A JP 5425280A JP S56152386 A JPS56152386 A JP S56152386A
Authority
JP
Japan
Prior art keywords
circuit
output
signal
bit compressing
switch
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
JP5425280A
Other languages
Japanese (ja)
Inventor
Motoaki Hayakawa
Kunio Matsumoto
Yasukazu Muranushi
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP5425280A priority Critical patent/JPS56152386A/en
Publication of JPS56152386A publication Critical patent/JPS56152386A/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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H04N19/619—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding the transform being operated outside the prediction loop

Abstract

PURPOSE:To transmit a high-quality picture, by performing low compression and high compression in intra-frame orthogonal conversion and by subjecting respective conversion outputs to inter-frame or inter-field coding. CONSTITUTION:Conversion output 306 converted orthogonally by orthogonal converting circuit 305 is applied to bit compressing circuit A307 and bit compressing circuit B308. The applied signal is compressed low by bit compressing circuit A307, and the output is applied to subtracting circuit 311 and switch circuits 319 and 321. The applied signal is compressed high by bit compressing circuit B308, and the output is applied to subtracting circuit 312 and switch circuits 319 and 321. Either signal 317 or 318 is selected by switch circuit 337 and is applied to adder 320 and switch circuit 319.
JP5425280A 1980-04-25 1980-04-25 Coding system of picture signal Pending JPS56152386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5425280A JPS56152386A (en) 1980-04-25 1980-04-25 Coding system of picture signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5425280A JPS56152386A (en) 1980-04-25 1980-04-25 Coding system of picture signal

Publications (1)

Publication Number Publication Date
JPS56152386A true JPS56152386A (en) 1981-11-25

Family

ID=12965355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5425280A Pending JPS56152386A (en) 1980-04-25 1980-04-25 Coding system of picture signal

Country Status (1)

Country Link
JP (1) JPS56152386A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62287469A (en) * 1986-06-06 1987-12-14 Hitachi Medical Corp Magnetic recording and reproducing device
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
JPH0364188A (en) * 1989-05-12 1991-03-19 Rai Radiotelevisione It Discrete cosine transform coder of digital video signal
WO1993002528A1 (en) * 1991-07-19 1993-02-04 Sony Corporation Coding and decoding device for time-varying image
JPH08237659A (en) * 1984-12-21 1996-09-13 Thomson Grand Public Adaptive decoder for continuous image
EP0779747A2 (en) * 1991-03-27 1997-06-18 Kabushiki Kaisha Toshiba High efficiency coding recording and reproducing apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08237659A (en) * 1984-12-21 1996-09-13 Thomson Grand Public Adaptive decoder for continuous image
JPS62287469A (en) * 1986-06-06 1987-12-14 Hitachi Medical Corp Magnetic recording and reproducing device
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
JPH0364188A (en) * 1989-05-12 1991-03-19 Rai Radiotelevisione It Discrete cosine transform coder of digital video signal
EP0779747A2 (en) * 1991-03-27 1997-06-18 Kabushiki Kaisha Toshiba High efficiency coding recording and reproducing apparatus
EP0779747A3 (en) * 1991-03-27 1997-07-02 Kabushiki Kaisha Toshiba High efficiency coding recording and reproducing apparatus
WO1993002528A1 (en) * 1991-07-19 1993-02-04 Sony Corporation Coding and decoding device for time-varying image

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