JPS6411473A - Original reader - Google Patents
Original readerInfo
- Publication number
- JPS6411473A JPS6411473A JP62165463A JP16546387A JPS6411473A JP S6411473 A JPS6411473 A JP S6411473A JP 62165463 A JP62165463 A JP 62165463A JP 16546387 A JP16546387 A JP 16546387A JP S6411473 A JPS6411473 A JP S6411473A
- Authority
- JP
- Japan
- Prior art keywords
- white reference
- range
- threshold
- read
- 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.)
- Pending
Links
Landscapes
- Image Input (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
PURPOSE:To eliminate an abnormal picture due to the dust or the flaw of a white reference plate by providing a storing means and a means for controlling a data transfer from the storing means to a CPU and rereading the white reference of a different position at the time of having an abnormality after the white reference is read. CONSTITUTION:In a comparing and deciding mode next to a reference reading mode, the address of a RAM 26 is set according to an address count CA to compare data from the RAM 26 with a threshold. When it is lower than threshold, it is judged to be normal and when all range is normal, it is shifted to a picture reading mode. If there is a value higher than the threshold in one dot throughout all the range, the white reference is reread. When a sensor reading position does not exceed a white reference range, FSHD is reset to read the white reference and compare and decide again. When it exceeds the white reference range, a travel body is returned to a home position to change the reading timing of the FSHD and read the white reference of the different line. In such a way, the abnormal picture due to the stain or the flaw of the white reference plate can be eliminated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62165463A JPS6411473A (en) | 1987-07-03 | 1987-07-03 | Original reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62165463A JPS6411473A (en) | 1987-07-03 | 1987-07-03 | Original reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6411473A true JPS6411473A (en) | 1989-01-17 |
Family
ID=15812895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62165463A Pending JPS6411473A (en) | 1987-07-03 | 1987-07-03 | Original reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6411473A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57152268A (en) * | 1981-03-14 | 1982-09-20 | Nec Corp | Reference information reading system |
JPS60246176A (en) * | 1984-05-21 | 1985-12-05 | Matsushita Electric Ind Co Ltd | Picture reader |
JPS61108260A (en) * | 1984-10-31 | 1986-05-26 | Fujitsu Ltd | Shading correction system |
-
1987
- 1987-07-03 JP JP62165463A patent/JPS6411473A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57152268A (en) * | 1981-03-14 | 1982-09-20 | Nec Corp | Reference information reading system |
JPS60246176A (en) * | 1984-05-21 | 1985-12-05 | Matsushita Electric Ind Co Ltd | Picture reader |
JPS61108260A (en) * | 1984-10-31 | 1986-05-26 | Fujitsu Ltd | Shading correction system |
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