JPS5444418A - Data compression system - Google Patents
Data compression systemInfo
- Publication number
- JPS5444418A JPS5444418A JP11079477A JP11079477A JPS5444418A JP S5444418 A JPS5444418 A JP S5444418A JP 11079477 A JP11079477 A JP 11079477A JP 11079477 A JP11079477 A JP 11079477A JP S5444418 A JPS5444418 A JP S5444418A
- Authority
- JP
- Japan
- Prior art keywords
- scanning line
- coded
- transit
- pattern
- disagreement
- 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
Links
Abstract
PURPOSE: To increase the compression rate, by coding the agreement and disagreement pattern of the preceding scanning line and the coded scanning line in the order of appearance of transit point, in facsimile.
CONSTITUTION: When the pattern A⊕B of agreement and disagreement is fed to transmit the information of coded scanning line B after the preceding scanning line A with the main scanning X and subscanning Y, the pattern A⊕ is represented with the location difference 4, 2, 4... of transit points and the number 1, 3, 1, 1... of the transit points as shown in Fig. 2a. Taking the preceding scanning line as B and the coded scanning line as C, the pattern B⊕C is represented in the form of Fig. 2b. Taking the code of position difference of the transit points as RLB, the code of numerals as NB, "O" as the transit position of the coded scanning lines, and "1" as the display for the transit position of preceding scanning lines, the patterns of A⊕B and B⊕C as shown in Fig. 3a and 3b are coded. Further,⊕ indicates exclusive OR.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11079477A JPS5444418A (en) | 1977-09-14 | 1977-09-14 | Data compression system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11079477A JPS5444418A (en) | 1977-09-14 | 1977-09-14 | Data compression system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5444418A true JPS5444418A (en) | 1979-04-07 |
Family
ID=14544794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11079477A Pending JPS5444418A (en) | 1977-09-14 | 1977-09-14 | Data compression system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5444418A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981000659A1 (en) * | 1979-08-17 | 1981-03-05 | Fujitsu Ltd | Compressed data restoring system |
-
1977
- 1977-09-14 JP JP11079477A patent/JPS5444418A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981000659A1 (en) * | 1979-08-17 | 1981-03-05 | Fujitsu Ltd | Compressed data restoring system |
EP0034187A1 (en) * | 1979-08-17 | 1981-08-26 | Fujitsu Limited | Compressed data restoring system |
EP0034187B1 (en) * | 1979-08-17 | 1984-07-04 | Fujitsu Limited | Compressed data restoring system |
US4492983A (en) * | 1979-08-17 | 1985-01-08 | Fujitsu Limited | System for decoding compressed data |
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