JPS6426281A - Image reading device - Google Patents
Image reading deviceInfo
- Publication number
- JPS6426281A JPS6426281A JP62117911A JP11791187A JPS6426281A JP S6426281 A JPS6426281 A JP S6426281A JP 62117911 A JP62117911 A JP 62117911A JP 11791187 A JP11791187 A JP 11791187A JP S6426281 A JPS6426281 A JP S6426281A
- Authority
- JP
- Japan
- Prior art keywords
- image
- converter
- pick
- counters
- outputs
- 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
Landscapes
- Image Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE:To attain the half tone display of a high quality with a low cost by comparing the output of a DA converter, which outputs an analog value corresponding to the output of a counter to count the low order two bits of the address of an image pick-up element in X and Y directions, and an image signal selected by the image-pick up element. CONSTITUTION:The titled device is composed of clock signal generating circuits 102 and 103 to generate a signal to execute a division to the resolution extent of the main and sub-scanning directions of an image-pick up element 101, two counters 104 and 105 to count the signals of the clock generating circuits 102 and 103, a DA converter 106 to DA-convert the outputs of the counters 104 and 105 and a comparing circuit 107 to compare the voltage value of an analog image signal obtained from the image-pick up element 101 and the output of the DA converter 106. The connection between the outputs of the counters 104 and 105 and the DA converter 106 is contrived. Thus, an optimum dither pattern can be obtained by a simple circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62117911A JPS6426281A (en) | 1987-01-07 | 1987-05-14 | Image reading device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP131387 | 1987-01-07 | ||
JP62117911A JPS6426281A (en) | 1987-01-07 | 1987-05-14 | Image reading device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426281A true JPS6426281A (en) | 1989-01-27 |
Family
ID=26334516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62117911A Pending JPS6426281A (en) | 1987-01-07 | 1987-05-14 | Image reading device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426281A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03198242A (en) * | 1990-05-30 | 1991-08-29 | Sharp Corp | Magneto-optical recording and reproducing device |
JP2007308194A (en) * | 2006-05-22 | 2007-11-29 | Nippon Electric Glass Co Ltd | Spacer for packing glass plate and packaging and packing method using the spacer |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS572762B2 (en) * | 1973-08-13 | 1982-01-18 |
-
1987
- 1987-05-14 JP JP62117911A patent/JPS6426281A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS572762B2 (en) * | 1973-08-13 | 1982-01-18 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03198242A (en) * | 1990-05-30 | 1991-08-29 | Sharp Corp | Magneto-optical recording and reproducing device |
JP2007308194A (en) * | 2006-05-22 | 2007-11-29 | Nippon Electric Glass Co Ltd | Spacer for packing glass plate and packaging and packing method using the spacer |
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