JPH02106761U - - Google Patents
Info
- Publication number
- JPH02106761U JPH02106761U JP1449389U JP1449389U JPH02106761U JP H02106761 U JPH02106761 U JP H02106761U JP 1449389 U JP1449389 U JP 1449389U JP 1449389 U JP1449389 U JP 1449389U JP H02106761 U JPH02106761 U JP H02106761U
- Authority
- JP
- Japan
- Prior art keywords
- line data
- specific code
- specific
- line
- storing
- 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
- 238000010586 diagram Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 1
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
- H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
Description
第１図は本考案に係るフアクシミリにおける原
稿読取り装置の一例を示すブロツク図、第２図は
２つの１ラインデータの画素パターン列ａ，ｂか
ら変化画素数の演算を説明する図、第３図は本考
案の動作手順を示すフローチヤートである。
２……原稿、５……第１ラインメモリ（第１記
憶手段）、６……第２ラインメモリ（第２記憶手
段）、７……ＸＯＲ回路（演算手段）、８……比
較回路、９……設定数値記憶部、１１……判断器
（判断手段）、１２……特定符号発生器（特定符
号発生手段）。
FIG. 1 is a block diagram showing an example of a facsimile document reading device according to the present invention, FIG. 2 is a diagram illustrating calculation of the number of changed pixels from two pixel pattern sequences a and b of one line data, and FIG. 3 is a flowchart showing the operating procedure of the present invention. 2... Original document, 5... First line memory (first storage means), 6... Second line memory (second storage means), 7... XOR circuit (calculation means), 8... Comparison circuit, 9 . . . Setting numerical value storage unit, 11 . . . Judgment device (judgment means), 12 .
Claims (1)
ータを記憶する第１記憶手段と、上記１ラインデ
ータより以前の１ラインデータを記憶する第２記
憶手段と、これら２つの１ラインデータの変化画
素数を洩算する演算手段と、１ラインのデータ分
より信号長の短い特定信号を発生する特定符号発
生手段と、予め入力された設定値と上記変化画素
との比較により上記第１ラインメモリの１ライン
データか特定符号発生手段の特定信号かを切替え
て伝送する判断手段とを備えたことを特徴とする
フアクシミリ装置における原稿読取り装置。 A first storage means for storing one line data obtained by scanning a document in the main scanning direction, a second storage means for storing one line data previous to the one line data, and changes in these two one line data. a calculation means for counting the number of pixels; a specific code generation means for generating a specific signal having a signal length shorter than one line of data; 1. A document reading device for a facsimile machine, characterized in that the document reading device for a facsimile machine is provided with a determining means for switching and transmitting either one line data of the specific code generating device or a specific signal of the specific code generating device.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1449389U JPH02106761U (en) | 1989-02-09 | 1989-02-09 | |
| FR9001543A FR2642926A1 (en) | 1989-02-09 | 1990-02-09 | Reading process and device for a fax machine |
| US07/803,727 US5181126A (en) | 1989-02-09 | 1991-12-09 | Reading device for facsimile apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1449389U JPH02106761U (en) | 1989-02-09 | 1989-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02106761U true JPH02106761U (en) | 1990-08-24 |
Family
ID=11862581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1449389U Pending JPH02106761U (en) | 1989-02-09 | 1989-02-09 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH02106761U (en) |
| FR (1) | FR2642926A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6276364A (en) * | 1985-09-27 | 1987-04-08 | Matsushita Graphic Commun Syst Inc | Picture information communication equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902009A (en) * | 1974-06-17 | 1975-08-26 | Xerox Corp | Multi aperture scanning and printing for facsimile line skipping |
| JPS5673974A (en) * | 1979-11-20 | 1981-06-19 | Fujitsu Ltd | Compression system of picture data |
-
1989
- 1989-02-09 JP JP1449389U patent/JPH02106761U/ja active Pending
-
1990
- 1990-02-09 FR FR9001543A patent/FR2642926A1/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6276364A (en) * | 1985-09-27 | 1987-04-08 | Matsushita Graphic Commun Syst Inc | Picture information communication equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2642926A1 (en) | 1990-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6341051B2 (en) | ||
| JPH02106761U (en) | ||
| JPH06113089A (en) | Information reader | |
| JPH0163262U (en) | ||
| JPH039573U (en) | ||
| JP3346916B2 (en) | Image rotation device | |
| JP2993143B2 (en) | Pattern synthesis coding method | |
| JP3018864B2 (en) | Facsimile machine | |
| JPH01142274U (en) | ||
| JPH0228176U (en) | ||
| JP2624659B2 (en) | Superimposed block decoding device | |
| JPH01156657U (en) | ||
| JPS5779564A (en) | Line-picture information conversion system | |
| JPH0216660U (en) | ||
| JPS6428070U (en) | ||
| JPH044463U (en) | ||
| JPH02311077A (en) | Facsimile equipment | |
| JPS63156740U (en) | ||
| JPH0242145U (en) | ||
| JPS62196464U (en) | ||
| JPS63146895U (en) | ||
| JPS6437173U (en) | ||
| JPS58147355U (en) | fax machine | |
| JPH0455871U (en) | ||
| JPH0251450U (en) |