JPS5567274A - Picture signal coding system - Google Patents

Picture signal coding system

Info

Publication number
JPS5567274A
JPS5567274A JP14005878A JP14005878A JPS5567274A JP S5567274 A JPS5567274 A JP S5567274A JP 14005878 A JP14005878 A JP 14005878A JP 14005878 A JP14005878 A JP 14005878A JP S5567274 A JPS5567274 A JP S5567274A
Authority
JP
Japan
Prior art keywords
code
run
run length
terminal
signals
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
JP14005878A
Other languages
Japanese (ja)
Inventor
Toru Kaneko
Naohiko Kamae
Shinichi Murakami
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP14005878A priority Critical patent/JPS5567274A/en
Publication of JPS5567274A publication Critical patent/JPS5567274A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To code picture signals with a small amount of cides by combining a forecast error code and a run length code to code them.
CONSTITUTION: In the figure, 1, 1', 1"... indicate level difference codes indicating difference between the density level of the preceding run and that of the current run, and 2, 2', 2",... indicate codes obtained by coding a run length where picture elememts of the density level of the preceding run continue. A unit to code signals dependently upon thus code string is constituted by pciture input device 3, A/D converter 4, clock signal generator 5, register 6, digital comparator 7, counter 8, register 9, level difference coder 10, run length coder 11, inverter 12, monostable multivibrator 13, delay circuit 14, delay circuit 15, level difference code terminal 16, strobe pulse terminal 17, and run length code terminal 18. In respect to coded signals coded by this constitution, a code volume compression rate is very high, and the capacity of the memory is small, and further, the transmission capacity of the transmission line is small.
COPYRIGHT: (C)1980,JPO&Japio
JP14005878A 1978-11-14 1978-11-14 Picture signal coding system Pending JPS5567274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14005878A JPS5567274A (en) 1978-11-14 1978-11-14 Picture signal coding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14005878A JPS5567274A (en) 1978-11-14 1978-11-14 Picture signal coding system

Publications (1)

Publication Number Publication Date
JPS5567274A true JPS5567274A (en) 1980-05-21

Family

ID=15259999

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14005878A Pending JPS5567274A (en) 1978-11-14 1978-11-14 Picture signal coding system

Country Status (1)

Country Link
JP (1) JPS5567274A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5761380A (en) * 1980-09-30 1982-04-13 Ricoh Co Ltd Picture encoding system
JPS5838072A (en) * 1981-08-31 1983-03-05 Fujitsu Ltd Variable density picture compression system
JP2013138422A (en) * 2008-11-10 2013-07-11 Apple Inc System and method for compressing stream of integer-valued data

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5761380A (en) * 1980-09-30 1982-04-13 Ricoh Co Ltd Picture encoding system
JPH0213511B2 (en) * 1980-09-30 1990-04-04 Ricoh Kk
JPS5838072A (en) * 1981-08-31 1983-03-05 Fujitsu Ltd Variable density picture compression system
JPS6365190B2 (en) * 1981-08-31 1988-12-14
JP2013138422A (en) * 2008-11-10 2013-07-11 Apple Inc System and method for compressing stream of integer-valued data
JP2016006961A (en) * 2008-11-10 2016-01-14 アップル インコーポレイテッド System and method for compressing stream of integer-valued data

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