JPS5471923A - Coding system for television signal - Google Patents

Coding system for television signal

Info

Publication number
JPS5471923A
JPS5471923A JP13890177A JP13890177A JPS5471923A JP S5471923 A JPS5471923 A JP S5471923A JP 13890177 A JP13890177 A JP 13890177A JP 13890177 A JP13890177 A JP 13890177A JP S5471923 A JPS5471923 A JP S5471923A
Authority
JP
Japan
Prior art keywords
movement
picture
quantization characteristic
case
frame
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.)
Granted
Application number
JP13890177A
Other languages
Japanese (ja)
Other versions
JPS5758112B2 (en
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 JP13890177A priority Critical patent/JPS5471923A/en
Publication of JPS5471923A publication Critical patent/JPS5471923A/en
Publication of JPS5758112B2 publication Critical patent/JPS5758112B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make high-quality coding possible efficiently without frame beat by performing codings different in quantization characteristic according to the movement of a picture.
CONSTITUTION: Control circuit 317 discriminates the state of the movement of a picture on a basis of occupied quantity signal 324 from buffer memory 323, where coded signals are stored, and signal 316 of difference components between frames. Then, mode selector signal 325 from circuit 317 controls so that coding 327 may be performed with fine quantization characteristic 308 in difference components between frames in case of a normal state of picture movement or be performed with rough quantization characteristic 307 in the frame in case of a comparatively rapid picture movement or be performed with fine quantization characteristic 308 in the frame in case of a comparatively small picture movement.
COPYRIGHT: (C)1979,JPO&Japio
JP13890177A 1977-11-21 1977-11-21 Coding system for television signal Granted JPS5471923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13890177A JPS5471923A (en) 1977-11-21 1977-11-21 Coding system for television signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13890177A JPS5471923A (en) 1977-11-21 1977-11-21 Coding system for television signal

Publications (2)

Publication Number Publication Date
JPS5471923A true JPS5471923A (en) 1979-06-08
JPS5758112B2 JPS5758112B2 (en) 1982-12-08

Family

ID=15232763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13890177A Granted JPS5471923A (en) 1977-11-21 1977-11-21 Coding system for television signal

Country Status (1)

Country Link
JP (1) JPS5471923A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634784A (en) * 1986-06-24 1988-01-09 Sony Corp High efficient coding device
JPS634782A (en) * 1986-06-24 1988-01-09 Sony Corp High efficient coding device
JPH03190390A (en) * 1989-12-19 1991-08-20 Matsushita Electric Ind Co Ltd Coder for moving picture signal
WO1993002528A1 (en) * 1991-07-19 1993-02-04 Sony Corporation Coding and decoding device for time-varying image
US7173969B2 (en) 2000-07-07 2007-02-06 Matsushita Electric Industrial Co., Ltd. Moving picture coding apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526406A (en) * 1975-07-07 1977-01-18 Nippon Telegr & Teleph Corp <Ntt> Inter-frame encoding system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526406A (en) * 1975-07-07 1977-01-18 Nippon Telegr & Teleph Corp <Ntt> Inter-frame encoding system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS634784A (en) * 1986-06-24 1988-01-09 Sony Corp High efficient coding device
JPS634782A (en) * 1986-06-24 1988-01-09 Sony Corp High efficient coding device
JPH03190390A (en) * 1989-12-19 1991-08-20 Matsushita Electric Ind Co Ltd Coder for moving picture signal
WO1993002528A1 (en) * 1991-07-19 1993-02-04 Sony Corporation Coding and decoding device for time-varying image
US7173969B2 (en) 2000-07-07 2007-02-06 Matsushita Electric Industrial Co., Ltd. Moving picture coding apparatus

Also Published As

Publication number Publication date
JPS5758112B2 (en) 1982-12-08

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