JPS558163A - Information reading device - Google Patents

Information reading device

Info

Publication number
JPS558163A
JPS558163A JP8112178A JP8112178A JPS558163A JP S558163 A JPS558163 A JP S558163A JP 8112178 A JP8112178 A JP 8112178A JP 8112178 A JP8112178 A JP 8112178A JP S558163 A JPS558163 A JP S558163A
Authority
JP
Japan
Prior art keywords
storage time
unit
manuscript
decided
picture
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
JP8112178A
Other languages
Japanese (ja)
Inventor
Shin Tsuda
Hiroyuki Mikata
Ryo Muto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP8112178A priority Critical patent/JPS558163A/en
Publication of JPS558163A publication Critical patent/JPS558163A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate the distortion of the picture signal caused by the difference of positions on the manuscript and thus to enhance the quality of the reproduced picture by varying the storage time for the storage element which stores the charge replied to the optical information.
CONSTITUTION: The sampling points are selected previously like (a), (b) and (c) in accordance with the light intensity, and then storage time Ta is decided for capacitor 23 of optical receiver 19 so that solid state pickup unit 14 may obtain the maximum output with sampling value (a) of the light volume. Thus region (a) is measured. At the same time, storage time Tb and Tc are decided for capacitor 23 so that unit 14 may obtain the maximum output with sampling value (b) and (c) each of the light volume, and then regions (b) and (c) are measured. With compounding of the measurement results at regions (a), (b) and (c), nearly uniform output can be obtained for unit 14. As a result, the good S/N is obtained at each region, and thus an extremely good picture of the manuscript can be read out.
COPYRIGHT: (C)1980,JPO&Japio
JP8112178A 1978-07-04 1978-07-04 Information reading device Pending JPS558163A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8112178A JPS558163A (en) 1978-07-04 1978-07-04 Information reading device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8112178A JPS558163A (en) 1978-07-04 1978-07-04 Information reading device

Publications (1)

Publication Number Publication Date
JPS558163A true JPS558163A (en) 1980-01-21

Family

ID=13737542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8112178A Pending JPS558163A (en) 1978-07-04 1978-07-04 Information reading device

Country Status (1)

Country Link
JP (1) JPS558163A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63193676A (en) * 1987-02-05 1988-08-10 Nippon Seimitsu Kogyo Kk Image sensor driver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63193676A (en) * 1987-02-05 1988-08-10 Nippon Seimitsu Kogyo Kk Image sensor driver

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