JPH03106168A - Optical reader - Google Patents

Optical reader

Info

Publication number
JPH03106168A
JPH03106168A JP24395689A JP24395689A JPH03106168A JP H03106168 A JPH03106168 A JP H03106168A JP 24395689 A JP24395689 A JP 24395689A JP 24395689 A JP24395689 A JP 24395689A JP H03106168 A JPH03106168 A JP H03106168A
Authority
JP
Japan
Prior art keywords
signal
light
constitution
photoelectric conversion
switching means
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
Application number
JP24395689A
Inventor
Hirotaka Arita
Shigeki Matsuo
Kenichi Nagatani
Minoru Tsukada
Original Assignee
Kyocera Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to JP24395689A priority Critical patent/JPH03106168A/en
Publication of JPH03106168A publication Critical patent/JPH03106168A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplify the constitution by connecting plural photoelectric conversion elements to a switching means in common, driving sequentially light emitting elements so as to input only a signal from a photoelectric conversion element group receiving light to the switching means.
CONSTITUTION: Analog switches SP11-SP1m are sequentially driven at a lighting period of a light emitting section L7 and only a signal from photodiodes PD51- PD5m is read. For example, the photodiode PD 11 is connected to the analog switch SP11 in this case, but no new light incidence is applied to the group P1 after the radiation of a light from an original by the preceding lighting of the light emission section L1 and the charge in capacitors C11-C1m is charged again at the preceding read of the signal. Thus, the input of the signal from the photodiode PD11 is prevented. Then the constitution is simplified in comparison with the case of controlling the photoelectric conversion element group by the switching means individually.
COPYRIGHT: (C)1991,JPO&Japio
JP24395689A 1989-09-19 1989-09-19 Optical reader Pending JPH03106168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24395689A JPH03106168A (en) 1989-09-19 1989-09-19 Optical reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24395689A JPH03106168A (en) 1989-09-19 1989-09-19 Optical reader

Publications (1)

Publication Number Publication Date
JPH03106168A true JPH03106168A (en) 1991-05-02

Family

ID=17111541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24395689A Pending JPH03106168A (en) 1989-09-19 1989-09-19 Optical reader

Country Status (1)

Country Link
JP (1) JPH03106168A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101924854A (en) * 2009-06-15 2010-12-22 夏普株式会社 Image read-out and image processing system with this image read-out

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101924854A (en) * 2009-06-15 2010-12-22 夏普株式会社 Image read-out and image processing system with this image read-out
JP2010288214A (en) * 2009-06-15 2010-12-24 Sharp Corp Image reading apparatus, and image forming apparatus including the same
US8520271B2 (en) 2009-06-15 2013-08-27 Sharp Kabushiki Kaisha Image reading apparatus and image forming apparatus provided with same

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