JPS57197679A - Graphic data reader - Google Patents
Graphic data readerInfo
- Publication number
- JPS57197679A JPS57197679A JP56082095A JP8209581A JPS57197679A JP S57197679 A JPS57197679 A JP S57197679A JP 56082095 A JP56082095 A JP 56082095A JP 8209581 A JP8209581 A JP 8209581A JP S57197679 A JPS57197679 A JP S57197679A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- period
- sampling interval
- continuously
- reading
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Character Input (AREA)
- Image Input (AREA)
Abstract
PURPOSE:To freely, continuously and variably set the contracting or magnifying factor of a reading picture, by arbitrarily setting a sampling interval of reading data variably without being limited to a specific integer relation. CONSTITUTION:A period detecting circuit 8 generating a signal corresponding to a period T1 of a moving pulse P1 and a variable frequency osicllating circuit VOC9 oscillated in a period T2 corresponding to the output value of the circuit 8 are provided. A detection circuit 8 and an adjusting circuit 10 for input and output of the VOC9 are provided to continuously change the reading sampling interval. An input voltage kV1 (where; k is the coefficient of the circuit 10) is given to the VCO9 and a pulse P2 controlled with the kV1 is applied to a processing circuit 6 as a sampling timing signal. Thus, the relation of (1/T1)= n/kmX(1/T2) is obtained, where (m) and (n) are constants. Then, the sampling interval of the reading data DO can be varied with the coefficient k. Thus, the contracting and magnifying factors of a picture can continuously be made.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56082095A JPS57197679A (en) | 1981-05-29 | 1981-05-29 | Graphic data reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56082095A JPS57197679A (en) | 1981-05-29 | 1981-05-29 | Graphic data reader |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3051667A Division JPH0512488A (en) | 1991-03-15 | 1991-03-15 | Graphic data reader |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57197679A true JPS57197679A (en) | 1982-12-03 |
JPH0410117B2 JPH0410117B2 (en) | 1992-02-24 |
Family
ID=13764861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56082095A Granted JPS57197679A (en) | 1981-05-29 | 1981-05-29 | Graphic data reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57197679A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60171579A (en) * | 1984-02-17 | 1985-09-05 | Hitachi Ltd | Optical character reader |
JPS60254283A (en) * | 1984-05-30 | 1985-12-14 | Tokyo Erekutoron Kk | Pattern reader |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5168138A (en) * | 1974-12-10 | 1976-06-12 | Omron Tateisi Electronics Co | Yomitoriseigyosochi |
JPS5633772A (en) * | 1979-08-25 | 1981-04-04 | Ricoh Co Ltd | Manual reading device |
-
1981
- 1981-05-29 JP JP56082095A patent/JPS57197679A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5168138A (en) * | 1974-12-10 | 1976-06-12 | Omron Tateisi Electronics Co | Yomitoriseigyosochi |
JPS5633772A (en) * | 1979-08-25 | 1981-04-04 | Ricoh Co Ltd | Manual reading device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60171579A (en) * | 1984-02-17 | 1985-09-05 | Hitachi Ltd | Optical character reader |
JPS60254283A (en) * | 1984-05-30 | 1985-12-14 | Tokyo Erekutoron Kk | Pattern reader |
JPH0521272B2 (en) * | 1984-05-30 | 1993-03-23 | Tokyo Electron Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPH0410117B2 (en) | 1992-02-24 |
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