JPS5245222A - Correct amplify converting circuit of optical read-out device - Google Patents

Correct amplify converting circuit of optical read-out device

Info

Publication number
JPS5245222A
JPS5245222A JP12058275A JP12058275A JPS5245222A JP S5245222 A JPS5245222 A JP S5245222A JP 12058275 A JP12058275 A JP 12058275A JP 12058275 A JP12058275 A JP 12058275A JP S5245222 A JPS5245222 A JP S5245222A
Authority
JP
Japan
Prior art keywords
out device
optical read
correct
converting circuit
amplify
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
JP12058275A
Other languages
Japanese (ja)
Inventor
Katsunori Toshiuchi
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.)
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki Co Ltd
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 Tokyo Keiki Co Ltd filed Critical Tokyo Keiki Co Ltd
Priority to JP12058275A priority Critical patent/JPS5245222A/en
Publication of JPS5245222A publication Critical patent/JPS5245222A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To operate A/D converting simply and stably by varying the equivalant resistor of FET with negative feed backing voltage and preserving the output level by varying the voltage dividing ratio of photo-electric converting analog input of optical read-out device.
COPYRIGHT: (C)1977,JPO&Japio
JP12058275A 1975-10-08 1975-10-08 Correct amplify converting circuit of optical read-out device Pending JPS5245222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12058275A JPS5245222A (en) 1975-10-08 1975-10-08 Correct amplify converting circuit of optical read-out device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12058275A JPS5245222A (en) 1975-10-08 1975-10-08 Correct amplify converting circuit of optical read-out device

Publications (1)

Publication Number Publication Date
JPS5245222A true JPS5245222A (en) 1977-04-09

Family

ID=14789835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12058275A Pending JPS5245222A (en) 1975-10-08 1975-10-08 Correct amplify converting circuit of optical read-out device

Country Status (1)

Country Link
JP (1) JPS5245222A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5876973A (en) * 1981-10-30 1983-05-10 Nippon Denso Co Ltd Optical information reader
US5248871A (en) * 1990-06-21 1993-09-28 Sumitomo Electric Industries, Ltd. Automatic gain control circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50108830A (en) * 1974-01-31 1975-08-27
JPS50108829A (en) * 1974-01-31 1975-08-27
JPS50120522A (en) * 1974-03-07 1975-09-20

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50108830A (en) * 1974-01-31 1975-08-27
JPS50108829A (en) * 1974-01-31 1975-08-27
JPS50120522A (en) * 1974-03-07 1975-09-20

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5876973A (en) * 1981-10-30 1983-05-10 Nippon Denso Co Ltd Optical information reader
JPS6363950B2 (en) * 1981-10-30 1988-12-09
US5248871A (en) * 1990-06-21 1993-09-28 Sumitomo Electric Industries, Ltd. Automatic gain control circuit

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