JPS58123845U - Digital original detection circuit - Google Patents
Digital original detection circuitInfo
- Publication number
- JPS58123845U JPS58123845U JP1849482U JP1849482U JPS58123845U JP S58123845 U JPS58123845 U JP S58123845U JP 1849482 U JP1849482 U JP 1849482U JP 1849482 U JP1849482 U JP 1849482U JP S58123845 U JPS58123845 U JP S58123845U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- original
- original detection
- digital original
- detects
- 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
- Controlling Sheets Or Webs (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
□ 第１図は本考案の基本構成図、第２図は第１図の
各部の波形図である。
１・・・可変電流源、・２・・・電圧コンパレータ、５
・・・カウンター、６・・・光源、７・・・受光素子、
８・・・原稿、 。
１０・・・クリア信号。 、□ Fig. 1 is a basic configuration diagram of the present invention, and Fig. 2 is a waveform diagram of each part of Fig. 1. 1... Variable current source, 2... Voltage comparator, 5
... Counter, 6... Light source, 7... Light receiving element,
8...Manuscript. 10... Clear signal. ,
Claims (1)
路で、光源をクロックパルスと伴に明るくしてゆき、上
記クロックで受光素子が導通するまでの間隔をカウント
し、原稿有無時のカウント数の比較によって原稿の有無
を検知することを特徴とするディジタル原稿検知回路。The original detection circuit detects when the original has reached the original reading point.The light source is made brighter with the clock pulse, and the interval until the light-receiving element becomes conductive with the clock is counted, and the number of counts when the original is present is calculated. A digital document detection circuit is characterized in that it detects the presence or absence of a document by comparing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1849482U JPS58123845U (en) | 1982-02-15 | 1982-02-15 | Digital original detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1849482U JPS58123845U (en) | 1982-02-15 | 1982-02-15 | Digital original detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58123845U true JPS58123845U (en) | 1983-08-23 |
Family
ID=30030746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1849482U Pending JPS58123845U (en) | 1982-02-15 | 1982-02-15 | Digital original detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58123845U (en) |
-
1982
- 1982-02-15 JP JP1849482U patent/JPS58123845U/en active Pending
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