JPS5570172A - Two-dimensional sequential coding system - Google Patents

Two-dimensional sequential coding system

Info

Publication number
JPS5570172A
JPS5570172A JP14459478A JP14459478A JPS5570172A JP S5570172 A JPS5570172 A JP S5570172A JP 14459478 A JP14459478 A JP 14459478A JP 14459478 A JP14459478 A JP 14459478A JP S5570172 A JPS5570172 A JP S5570172A
Authority
JP
Japan
Prior art keywords
coding
circuit
picture element
correlation
detection circuits
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
JP14459478A
Other languages
Japanese (ja)
Other versions
JPS5927505B2 (en
Inventor
Yasuhiro Yamazaki
Yasushi Wakahara
Kanko Yuki
Toyomichi Yamada
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
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK, Nippon Telegraph and Telephone Corp filed Critical Kokusai Denshin Denwa KK
Priority to JP53144594A priority Critical patent/JPS5927505B2/en
Priority to CA339,350A priority patent/CA1128646A/en
Priority to NL7908320A priority patent/NL192421C/en
Priority to AU52908/79A priority patent/AU518355B2/en
Priority to US06/095,927 priority patent/US4258392A/en
Priority to DE2946982A priority patent/DE2946982C2/en
Priority to FR7928678A priority patent/FR2442558A1/en
Priority to GB7940496A priority patent/GB2038592B/en
Publication of JPS5570172A publication Critical patent/JPS5570172A/en
Publication of JPS5927505B2 publication Critical patent/JPS5927505B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE: To ensure a high-efficiency coding regardless of the correlation density by carrying out the coding with a dstance secured from the nearby varying picture element in case the correlation is intense between the lines and the coding via the distance from the same line in case no correlation exists respectively in the proper selection.
CONSTITUTION: The coding device is constituted with the following units: input terminal 1; line memories 2 and 3 recording 1-line signals; memory 4 memorizing the picture element of the start point; address control circuit 5; exclusive logic circuit 6; OR circuit 7; varying picture element detection circuits 11 and 12; detection circuits for varying picture elements 21∼24; direction detection circuits 25 and 26; counters 31∼34; bus mode detection circuit 40; coding circuits 51∼54; comparator circuit 60 to give comparison to coding bit numbers; gates 71∼76; address counters 81 and 82; address registers 83; signal compound circuit 90; and output terminal 100 each. While the original signal can be decoded by having the procedures in sequence in the adverse way to that of the coding. In such way, the coding efficiency can be increased and with reduction of the memory capacity and the transmission time.
COPYRIGHT: (C)1980,JPO&Japio
JP53144594A 1978-11-22 1978-11-22 Two-dimensional sequential encoding method Expired JPS5927505B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP53144594A JPS5927505B2 (en) 1978-11-22 1978-11-22 Two-dimensional sequential encoding method
CA339,350A CA1128646A (en) 1978-11-22 1979-11-07 Coding method for facsimile signal
NL7908320A NL192421C (en) 1978-11-22 1979-11-14 Coding method for facsimile signals.
AU52908/79A AU518355B2 (en) 1978-11-22 1979-11-16 Coding facsimile signal
US06/095,927 US4258392A (en) 1978-11-22 1979-11-19 Coding method for facsimile signal
DE2946982A DE2946982C2 (en) 1978-11-22 1979-11-21 Method of transmitting a facsimile signal
FR7928678A FR2442558A1 (en) 1978-11-22 1979-11-21 METHOD FOR ENCODING FACSIMILE IMAGE SIGNALS
GB7940496A GB2038592B (en) 1978-11-22 1979-11-22 Coding method for facsimile signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53144594A JPS5927505B2 (en) 1978-11-22 1978-11-22 Two-dimensional sequential encoding method

Publications (2)

Publication Number Publication Date
JPS5570172A true JPS5570172A (en) 1980-05-27
JPS5927505B2 JPS5927505B2 (en) 1984-07-06

Family

ID=15365688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53144594A Expired JPS5927505B2 (en) 1978-11-22 1978-11-22 Two-dimensional sequential encoding method

Country Status (1)

Country Link
JP (1) JPS5927505B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60154776A (en) * 1984-01-16 1985-08-14 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Coding and decoding system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5258406A (en) * 1975-11-10 1977-05-13 Kokusai Denshin Denwa Co Ltd Facsimile signal change point address coding system
JPS5290217A (en) * 1976-01-24 1977-07-29 Nippon Telegr & Teleph Corp <Ntt> Transmission system with coded redundancy inhibition
JPS532025A (en) * 1976-06-28 1978-01-10 Nippon Telegr & Teleph Corp <Ntt> Redundancy suppression coding transmission system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5258406A (en) * 1975-11-10 1977-05-13 Kokusai Denshin Denwa Co Ltd Facsimile signal change point address coding system
JPS5290217A (en) * 1976-01-24 1977-07-29 Nippon Telegr & Teleph Corp <Ntt> Transmission system with coded redundancy inhibition
JPS532025A (en) * 1976-06-28 1978-01-10 Nippon Telegr & Teleph Corp <Ntt> Redundancy suppression coding transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60154776A (en) * 1984-01-16 1985-08-14 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Coding and decoding system

Also Published As

Publication number Publication date
JPS5927505B2 (en) 1984-07-06

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