JPS5570172A - Two-dimensional sequential coding system - Google Patents
Two-dimensional sequential coding systemInfo
- 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
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
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)
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)
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 |
-
1978
- 1978-11-22 JP JP53144594A patent/JPS5927505B2/en not_active Expired
Patent Citations (3)
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)
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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