JPS5739671A - Shrinking system for facsimile picture signal - Google Patents
Shrinking system for facsimile picture signalInfo
- Publication number
- JPS5739671A JPS5739671A JP55114914A JP11491480A JPS5739671A JP S5739671 A JPS5739671 A JP S5739671A JP 55114914 A JP55114914 A JP 55114914A JP 11491480 A JP11491480 A JP 11491480A JP S5739671 A JPS5739671 A JP S5739671A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- picture signal
- memory
- share
- written
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Editing Of Facsimile Originals (AREA)
- Image Processing (AREA)
Abstract
PURPOSE:To shrink fine part without missing, by converting M-bit's share of a binary picture signal into N-bit so that the change in (0), (1) remains, storing it in a memory and reading it sequentially. CONSTITUTION:A picture signal reading in an original is introduced to a shift register 1, and shift is made in the timing of the 4th leading of a clock A. In this case, the content omitting one-bit's share from the same consecutive signals so that the change in (0), (1) of the content of the register 1 remains is taken as the output for a memory 3. The output of the memory 3 is written in a line memory 6 and 0 is written in at the right of the right end bit, and each code introduced from a shift register 4 is continuously written in every bit number of the original picture signal. When the write-in for one line's share is finished, the shrinked picture signal reduced by one bit is sequentially read out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55114914A JPS5739671A (en) | 1980-08-20 | 1980-08-20 | Shrinking system for facsimile picture signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55114914A JPS5739671A (en) | 1980-08-20 | 1980-08-20 | Shrinking system for facsimile picture signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5739671A true JPS5739671A (en) | 1982-03-04 |
| JPS6243588B2 JPS6243588B2 (en) | 1987-09-16 |
Family
ID=14649782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55114914A Granted JPS5739671A (en) | 1980-08-20 | 1980-08-20 | Shrinking system for facsimile picture signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5739671A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58181359A (en) * | 1982-04-16 | 1983-10-24 | Yokogawa Hokushin Electric Corp | Picture data processor |
| JPS6085680A (en) * | 1983-10-17 | 1985-05-15 | Canon Inc | Picture processing device |
| JPS6146590U (en) * | 1984-08-30 | 1986-03-28 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | image reduction device |
| JPH0193874A (en) * | 1987-10-05 | 1989-04-12 | Mitsubishi Heavy Ind Ltd | Character recognizing device |
| US5054099A (en) * | 1989-02-23 | 1991-10-01 | Nippon Telegraph And Telephone Corporation | Binary image reduction method |
-
1980
- 1980-08-20 JP JP55114914A patent/JPS5739671A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58181359A (en) * | 1982-04-16 | 1983-10-24 | Yokogawa Hokushin Electric Corp | Picture data processor |
| JPS6085680A (en) * | 1983-10-17 | 1985-05-15 | Canon Inc | Picture processing device |
| JPH053783B2 (en) * | 1983-10-17 | 1993-01-18 | Canon Kk | |
| JPS6146590U (en) * | 1984-08-30 | 1986-03-28 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | image reduction device |
| JPH0193874A (en) * | 1987-10-05 | 1989-04-12 | Mitsubishi Heavy Ind Ltd | Character recognizing device |
| US5054099A (en) * | 1989-02-23 | 1991-10-01 | Nippon Telegraph And Telephone Corporation | Binary image reduction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6243588B2 (en) | 1987-09-16 |
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