IT965118B - Circuito integrato generatore di funzione elettriche particolarmente per la regolazione automatica del l esposizione in fotocamere - Google Patents

Circuito integrato generatore di funzione elettriche particolarmente per la regolazione automatica del l esposizione in fotocamere

Info

Publication number
IT965118B
IT965118B IT69669/72A IT6966972A IT965118B IT 965118 B IT965118 B IT 965118B IT 69669/72 A IT69669/72 A IT 69669/72A IT 6966972 A IT6966972 A IT 6966972A IT 965118 B IT965118 B IT 965118B
Authority
IT
Italy
Prior art keywords
cameras
exposure
integrated circuit
automatic adjustment
electrical functions
Prior art date
Application number
IT69669/72A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of IT965118B publication Critical patent/IT965118B/it

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
    • G03B7/081—Analogue circuits
    • G03B7/083—Analogue circuits for control of exposure time
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C27/00—Electric analogue stores, e.g. for storing instantaneous values
    • G11C27/02—Sample-and-hold arrangements
    • G11C27/024—Sample-and-hold arrangements using a capacitive memory element
    • G11C27/028—Current mode circuits, e.g. switched current memories
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
    • H03F3/347—DC amplifiers in which all stages are DC-coupled with semiconductor devices only in integrated circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Exposure Control For Cameras (AREA)
IT69669/72A 1971-08-21 1972-08-18 Circuito integrato generatore di funzione elettriche particolarmente per la regolazione automatica del l esposizione in fotocamere IT965118B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7111555A NL7111555A (it) 1971-08-21 1971-08-21

Publications (1)

Publication Number Publication Date
IT965118B true IT965118B (it) 1974-01-31

Family

ID=19813861

Family Applications (1)

Application Number Title Priority Date Filing Date
IT69669/72A IT965118B (it) 1971-08-21 1972-08-18 Circuito integrato generatore di funzione elettriche particolarmente per la regolazione automatica del l esposizione in fotocamere

Country Status (7)

Country Link
US (1) US3808463A (it)
JP (2) JPS4830858A (it)
DE (1) DE2238455A1 (it)
FR (1) FR2151307A5 (it)
GB (1) GB1339212A (it)
IT (1) IT965118B (it)
NL (1) NL7111555A (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5611052Y2 (it) * 1973-09-12 1981-03-12
JPS5418056Y2 (it) * 1973-12-13 1979-07-09
US4099188A (en) * 1974-10-09 1978-07-04 Asahi Kogaku Kogyo Kabushiki Kaisha Automatic exposure control device for single lens reflex camera
JPS5818617B2 (ja) * 1974-11-14 1983-04-14 アサヒコウガクコウギヨウ カブシキガイシヤ シヤシンサツエイヨウソツコウカイロ
US4085411A (en) * 1976-04-16 1978-04-18 Sprague Electric Company Light detector system with photo diode and current-mirror amplifier
US4216379A (en) * 1978-10-26 1980-08-05 Sprague Electric Company Low voltage bias circuit for a photo-diode
FR2579796A1 (fr) * 1985-04-02 1986-10-03 Thomson Csf Dispositif de generation d'un signal de forme complexe par approximations lineaires

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194985A (en) * 1962-07-02 1965-07-13 North American Aviation Inc Multiplexing circuit with feedback to a constant current source
US3239694A (en) * 1963-09-25 1966-03-08 North American Aviation Inc Bi-level threshold setting circuit
US3331029A (en) * 1963-11-13 1967-07-11 Lucas Industries Ltd A. c. transistor amplifiers for d. c. bias controlled stabilization
US3319079A (en) * 1964-04-02 1967-05-09 North American Aviation Inc Active phase shift compensation network
US3392287A (en) * 1965-01-06 1968-07-09 Gen Electric Compensated operational amplifier
US3374362A (en) * 1965-12-10 1968-03-19 Milgo Electronic Corp Operational amplifier with mode control switches
US3609394A (en) * 1965-12-28 1971-09-28 Ca Atomic Energy Ltd Logarithmic amplifier
US3436670A (en) * 1966-12-14 1969-04-01 Motorola Inc Variable bandwidth filter system
US3672753A (en) * 1968-11-13 1972-06-27 Asahi Optical Co Ltd Photocell controlled diaphragm
NL6914072A (it) * 1969-09-17 1971-03-19
US3652871A (en) * 1970-01-19 1972-03-28 Us Navy Exponential attenuator-amplifier circuit

Also Published As

Publication number Publication date
GB1339212A (en) 1973-11-28
JPS4830858A (it) 1973-04-23
DE2238455A1 (de) 1973-03-01
JPS4830838A (it) 1973-04-23
FR2151307A5 (it) 1973-04-13
US3808463A (en) 1974-04-30
NL7111555A (it) 1973-02-23

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