JPS5614380A - Original reader - Google Patents
Original readerInfo
- Publication number
- JPS5614380A JPS5614380A JP9115379A JP9115379A JPS5614380A JP S5614380 A JPS5614380 A JP S5614380A JP 9115379 A JP9115379 A JP 9115379A JP 9115379 A JP9115379 A JP 9115379A JP S5614380 A JPS5614380 A JP S5614380A
- Authority
- JP
- Japan
- Prior art keywords
- read
- information
- original
- memory
- irregularity
- 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
- 230000035945 sensitivity Effects 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
Landscapes
- Image Input (AREA)
Abstract
PURPOSE: To correct electrically shading, sensitivity irregularity, and luminance irregularity of the light source very simply, by storing information, which is obtained by reading a reference original in a memory and by reading this information from the memory when an original is read actually.
CONSTITUTION: The original stand where originals whould be put is provided with a reference original, and information of the reference original is read by one-scanning line components when a self-scanning photodetector is in the home position, and read information is stored in memory 27, which is constituted by an RAM, by the clock signal from crystal oscillator 21. When information from the original is read by CCD actually, information read dependent upon CCD22d and read of information of the reference original stored in memory 27 are synchronized with each other by the clock signal of oscillator 21, and respective informations are supplied to comparator 31. In this comparator 31, shading, sensitivity irregularity, luminance irregularity, and so on are corrected electrically with the value read from memory 27 as a reference value.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9115379A JPS5614380A (en) | 1979-07-16 | 1979-07-16 | Original reader |
| US06/139,762 US4325086A (en) | 1979-04-20 | 1980-04-14 | Recording device |
| DE3051256A DE3051256C2 (en) | 1979-04-20 | 1980-04-18 | Recording system with acquisition device |
| DE19803014979 DE3014979A1 (en) | 1979-04-20 | 1980-04-18 | RECORDING DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9115379A JPS5614380A (en) | 1979-07-16 | 1979-07-16 | Original reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5614380A true JPS5614380A (en) | 1981-02-12 |
Family
ID=14018561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9115379A Pending JPS5614380A (en) | 1979-04-20 | 1979-07-16 | Original reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5614380A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57203178A (en) * | 1981-06-08 | 1982-12-13 | Ibm | Electrical measuring device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5317034A (en) * | 1976-07-30 | 1978-02-16 | Sharp Corp | Image sensor output correcting system |
| JPS5395518A (en) * | 1977-02-02 | 1978-08-21 | Nippon Telegr & Teleph Corp <Ntt> | Facsimile input system |
| JPS5476021A (en) * | 1977-11-25 | 1979-06-18 | Recognition Equipment Inc | Method of and device for controlling automatically gain of photocell array |
-
1979
- 1979-07-16 JP JP9115379A patent/JPS5614380A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5317034A (en) * | 1976-07-30 | 1978-02-16 | Sharp Corp | Image sensor output correcting system |
| JPS5395518A (en) * | 1977-02-02 | 1978-08-21 | Nippon Telegr & Teleph Corp <Ntt> | Facsimile input system |
| JPS5476021A (en) * | 1977-11-25 | 1979-06-18 | Recognition Equipment Inc | Method of and device for controlling automatically gain of photocell array |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57203178A (en) * | 1981-06-08 | 1982-12-13 | Ibm | Electrical measuring device |
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