JPS6436260A - Picture reader - Google Patents
Picture readerInfo
- Publication number
- JPS6436260A JPS6436260A JP62192293A JP19229387A JPS6436260A JP S6436260 A JPS6436260 A JP S6436260A JP 62192293 A JP62192293 A JP 62192293A JP 19229387 A JP19229387 A JP 19229387A JP S6436260 A JPS6436260 A JP S6436260A
- Authority
- JP
- Japan
- Prior art keywords
- ccd
- magnification
- row
- calculation
- integer part
- 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
- Image Input (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE:To attain magnification and reduction in the subscanning direction of a contact type image sensor where CCD chips are arranged in zigzag by obtaining a proper delay time corresponding to the contracted magnification in the unit of one line read time and generating a drive signal fed to a 1st row CCD by the integer part and the decimal part. CONSTITUTION:In reading with nonmagnification, the read information of the 1st row CCD is retarded by 4Tsec (T=one line read time) more than the information of the 2nd row. In setting magnification M by a magnification setting means 1, the calculation of 4TXM is applied and it is divided into an integer part M0 and a fraction part M1 using the time T as the unit. A control circuit 2 uses the integer part M0 so as to select one of timing signal generating means PAL5a-5n to generate drive signals phiv2-phiv7. Then the calculation of the decimal part M1XT is executed and the result of calculation is converted into the clock count N of the CCD and it is given to a comparator 4. The comparator 4 outputs a coincidence signal when the count of the CCD clock from the counter 3 is equal to the N, and the drive signal phiv1 is given to the CCDs 1, 3 of the 1st row in this timing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62192293A JPH0828792B2 (en) | 1987-07-31 | 1987-07-31 | Image reading device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62192293A JPH0828792B2 (en) | 1987-07-31 | 1987-07-31 | Image reading device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6436260A true JPS6436260A (en) | 1989-02-07 |
JPH0828792B2 JPH0828792B2 (en) | 1996-03-21 |
Family
ID=16288866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62192293A Expired - Lifetime JPH0828792B2 (en) | 1987-07-31 | 1987-07-31 | Image reading device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0828792B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03112264A (en) * | 1989-09-26 | 1991-05-13 | Nisca Corp | Image reader |
JPH04183164A (en) * | 1990-11-19 | 1992-06-30 | Ricoh Elemex Corp | Image reader |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60182859A (en) * | 1984-02-29 | 1985-09-18 | Canon Inc | Original reader |
JPS61234166A (en) * | 1985-04-09 | 1986-10-18 | Canon Inc | Picture reader |
-
1987
- 1987-07-31 JP JP62192293A patent/JPH0828792B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60182859A (en) * | 1984-02-29 | 1985-09-18 | Canon Inc | Original reader |
JPS61234166A (en) * | 1985-04-09 | 1986-10-18 | Canon Inc | Picture reader |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03112264A (en) * | 1989-09-26 | 1991-05-13 | Nisca Corp | Image reader |
JPH04183164A (en) * | 1990-11-19 | 1992-06-30 | Ricoh Elemex Corp | Image reader |
Also Published As
Publication number | Publication date |
---|---|
JPH0828792B2 (en) | 1996-03-21 |
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