FR2448164A1 - Circuit de reglage de temps de pose pour appareil photographique - Google Patents
Circuit de reglage de temps de pose pour appareil photographiqueInfo
- Publication number
- FR2448164A1 FR2448164A1 FR8002208A FR8002208A FR2448164A1 FR 2448164 A1 FR2448164 A1 FR 2448164A1 FR 8002208 A FR8002208 A FR 8002208A FR 8002208 A FR8002208 A FR 8002208A FR 2448164 A1 FR2448164 A1 FR 2448164A1
- Authority
- FR
- France
- Prior art keywords
- circuit
- manual
- data
- automatic
- converter
- 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
Links
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000010339 dilation Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
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
- 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
- G03B7/093—Digital circuits for control of exposure time
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
- Indication In Cameras, And Counting Of Exposures (AREA)
Abstract
L'INVENTION CONCERNE UN CIRCUIT DE REGLAGE COMBINE MANUEL ET AUTOMATIQUE DU TEMPS DE POSE POUR APPAREIL PHOTOGRAPHIQUE DANS LEQUEL LA DONNEE D'EXPOSITION AUTOMATIQUE EST PRODUITE PHOTOMETRIQUEMENT ET LA DONNEE MANUELLE EST FIXEE MANUELLEMENT. LA DONNEE AUTOMATIQUE EST PRODUITE PAR UN CIRCUIT DE CALCUL 5 CONNECTE A DES CIRCUITS 1 A 4 DE COMPRESSION LOGARITHMIQUE DE LA BRILLANCE, DE LA SENSIBILITE DU FILM, DE LA VALEUR D'OUVERTURE ET DU FACTEUR D'EXPOSITION. LE SIGNAL DE SORTIE DU CIRCUIT DE CALCUL EST SELECTIVEMENT COUPLE, VIA UN CIRCUIT DE COMMUTATION 9 RECEVANT EGALEMENT LA DONNEE DE FIXATION DE TEMPS DE POSE MANUELLE APRES SA CONVERSION NUMERIQUE-ANALOGIQUE DANS UN CONVERTISSEUR 13, A UN CIRCUIT 15 DE DETERMINATION DE TEMPS DE DILATATION. CES DEUX SIGNAUX ANALOGIQUES SONT CONVERTIS A LA FORME NUMERIQUE PAR UN CONVERTISSEUR 14 ET SELECTIVEMENT APPLIQUES PAR UN CIRCUIT DE COMMUTATION 16 A UNE UNITE DE VISUALISATION 18, SELON LA POSITION D'UN COMMUTATEUR 19 DE SELECTION DE MODE MANUEL-AUTOMATIQUE. LE CIRCUIT DE L'INVENTION EST SIMPLE, PEU ENCOMBRANT ET PEU COUTEUX A FABRIQUER.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1056879A JPS55103531A (en) | 1979-02-01 | 1979-02-01 | Exposure time control circuit of camera |
JP1056679A JPS55103530A (en) | 1979-02-01 | 1979-02-01 | Exposure time control circuit of camera |
JP1056779A JPS55103542A (en) | 1979-02-01 | 1979-02-01 | Exposure time display circuit of camera |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2448164A1 true FR2448164A1 (fr) | 1980-08-29 |
FR2448164B1 FR2448164B1 (fr) | 1984-01-13 |
Family
ID=27279012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8002208A Granted FR2448164A1 (fr) | 1979-02-01 | 1980-02-01 | Circuit de reglage de temps de pose pour appareil photographique |
Country Status (4)
Country | Link |
---|---|
US (1) | US4306785A (fr) |
DE (1) | DE3003745C2 (fr) |
FR (1) | FR2448164A1 (fr) |
GB (2) | GB2059612B (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5670533A (en) * | 1979-11-13 | 1981-06-12 | Asahi Optical Co Ltd | Control circuit for exposure time of camera |
JPS5730822A (en) * | 1980-07-31 | 1982-02-19 | Olympus Optical Co Ltd | Average photometry method at plural points of automatic exposure camera |
JPS57195226A (en) * | 1981-05-27 | 1982-11-30 | Olympus Optical Co Ltd | Automatic exposure controller of camera |
JPH0823648B2 (ja) * | 1983-08-11 | 1996-03-06 | 株式会社ニコン | カメラの優先モード設定装置 |
US5272497A (en) * | 1989-07-25 | 1993-12-21 | Asahi Kogaku Kogyo Kabushiki Kaisha | Light source apparatus for endoscope |
US5184159A (en) * | 1989-07-25 | 1993-02-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Light source apparatus for endoscope |
JP2868270B2 (ja) * | 1990-02-14 | 1999-03-10 | 旭光学工業株式会社 | カメラの露出制御装置 |
KR100210005B1 (ko) * | 1991-04-15 | 1999-07-15 | 마츠모토 도루 | 카메라의 노출제어장치 |
CA2066014C (fr) * | 1991-04-15 | 2001-04-03 | Osamu Sato | Dispositif de commande d'exposition pour appareil photo |
CA2066022C (fr) * | 1991-04-15 | 2000-08-15 | Osamu Sato | Dispositif de commande d'exposition pour appareil photo |
JP5125010B2 (ja) * | 2006-07-20 | 2013-01-23 | ソニー株式会社 | 固体撮像装置、及び制御システム |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2241801A1 (fr) * | 1973-08-24 | 1975-03-21 | Seiko Koki Kk | |
FR2261551A1 (fr) * | 1974-02-18 | 1975-09-12 | Seiko Koki Kk | |
FR2261550A1 (fr) * | 1974-02-18 | 1975-09-12 | Seiko Koki Kk |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5640811B2 (fr) * | 1972-12-29 | 1981-09-24 | ||
JPS6018927B2 (ja) * | 1975-11-06 | 1985-05-13 | 旭光学工業株式会社 | カメラのデイジタル表示回路 |
JPS52119228A (en) * | 1976-03-30 | 1977-10-06 | Canon Inc | Means for setting photograph information |
JPS5358233A (en) * | 1976-11-06 | 1978-05-26 | Asahi Optical Co Ltd | Digital control automatic exposure camera |
JPS5379533A (en) * | 1976-12-24 | 1978-07-14 | Nippon Chemical Ind | Exposure control device for camera |
-
1980
- 1980-01-17 US US06/113,003 patent/US4306785A/en not_active Expired - Lifetime
- 1980-01-24 GB GB8032779A patent/GB2059612B/en not_active Expired
- 1980-01-24 GB GB8002465A patent/GB2045957B/en not_active Expired
- 1980-02-01 FR FR8002208A patent/FR2448164A1/fr active Granted
- 1980-02-01 DE DE3003745A patent/DE3003745C2/de not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2241801A1 (fr) * | 1973-08-24 | 1975-03-21 | Seiko Koki Kk | |
FR2261551A1 (fr) * | 1974-02-18 | 1975-09-12 | Seiko Koki Kk | |
FR2261550A1 (fr) * | 1974-02-18 | 1975-09-12 | Seiko Koki Kk |
Also Published As
Publication number | Publication date |
---|---|
GB2059612B (en) | 1983-05-25 |
US4306785A (en) | 1981-12-22 |
DE3003745C2 (de) | 1984-05-03 |
GB2045957A (en) | 1980-11-05 |
GB2059612A (en) | 1981-04-23 |
FR2448164B1 (fr) | 1984-01-13 |
DE3003745A1 (de) | 1980-08-07 |
GB2045957B (en) | 1983-03-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
DL | Decision of the director general to leave to make available licences of right | ||
ST | Notification of lapse |