JPS5754823A - Analogue-digital conversion circuit for illumination photometer - Google Patents

Analogue-digital conversion circuit for illumination photometer

Info

Publication number
JPS5754823A
JPS5754823A JP13113380A JP13113380A JPS5754823A JP S5754823 A JPS5754823 A JP S5754823A JP 13113380 A JP13113380 A JP 13113380A JP 13113380 A JP13113380 A JP 13113380A JP S5754823 A JPS5754823 A JP S5754823A
Authority
JP
Japan
Prior art keywords
power source
circuit
inverter
control
constitution
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.)
Granted
Application number
JP13113380A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6334968B2 (enrdf_load_stackoverflow
Inventor
Noboru Tonegawa
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.)
Ricoh Elemex Corp
Original Assignee
Ricoh Elemex 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 Ricoh Elemex Corp filed Critical Ricoh Elemex Corp
Priority to JP13113380A priority Critical patent/JPS5754823A/ja
Publication of JPS5754823A publication Critical patent/JPS5754823A/ja
Publication of JPS6334968B2 publication Critical patent/JPS6334968B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/091—Digital circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Analogue/Digital Conversion (AREA)
JP13113380A 1980-09-20 1980-09-20 Analogue-digital conversion circuit for illumination photometer Granted JPS5754823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13113380A JPS5754823A (en) 1980-09-20 1980-09-20 Analogue-digital conversion circuit for illumination photometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13113380A JPS5754823A (en) 1980-09-20 1980-09-20 Analogue-digital conversion circuit for illumination photometer

Publications (2)

Publication Number Publication Date
JPS5754823A true JPS5754823A (en) 1982-04-01
JPS6334968B2 JPS6334968B2 (enrdf_load_stackoverflow) 1988-07-13

Family

ID=15050751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13113380A Granted JPS5754823A (en) 1980-09-20 1980-09-20 Analogue-digital conversion circuit for illumination photometer

Country Status (1)

Country Link
JP (1) JPS5754823A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010016449A1 (en) * 2008-08-08 2010-02-11 Semiconductor Energy Laboratory Co., Ltd. Photoelectric conversion device and electronic device having the same

Also Published As

Publication number Publication date
JPS6334968B2 (enrdf_load_stackoverflow) 1988-07-13

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