GB1404674A - Quantized indication arrangement - Google Patents
Quantized indication arrangementInfo
- Publication number
- GB1404674A GB1404674A GB4378672A GB4378672A GB1404674A GB 1404674 A GB1404674 A GB 1404674A GB 4378672 A GB4378672 A GB 4378672A GB 4378672 A GB4378672 A GB 4378672A GB 1404674 A GB1404674 A GB 1404674A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sept
- transistor
- quantized
- overlap
- circuit
- 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.)
- Expired
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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/18—Signals indicating condition of a camera member or suitability of light
-
- 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
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/70—Exposure-making shutters; Diaphragms with flash-synchronising contacts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Indicating Measured Values (AREA)
- Measurement Of Current Or Voltage (AREA)
- Control Of El Displays (AREA)
Abstract
1404674 Exposure meters ASAHI KOGAKU KOGYO KK 21 Sept 1972 [21 Sept 1971] 43786/72 Heading G2X [Also in Division H3] In an exposure meter, the resistance of a CdS photo-sensitive resistor 6 is quantized by feeding successive currents therethrough of magnitudes determined by biasing resistors 4-1 to 4-N sequentially connected into the base circuit of transistor 5 and when V 1 is within a given range of a reference V2, enabling transistor 9 to energize the lamp or light emitting diode 10-1 to 10-N corresponding to the biasing resistor then in circuit. The ranges may overlap, two adjacent indicators being energized in the overlap regions thereby increasing the effective number of quantizations. The counter 2 may be stopped when balance is found Fig. 2 (not shown) and a switch may be provided to retain the output even if the light subsequently varies Fig. 3 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7361471A JPS535819B2 (en) | 1971-09-21 | 1971-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1404674A true GB1404674A (en) | 1975-09-03 |
Family
ID=13523373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4378672A Expired GB1404674A (en) | 1971-09-21 | 1972-09-21 | Quantized indication arrangement |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS535819B2 (en) |
| DE (1) | DE2246286C3 (en) |
| GB (1) | GB1404674A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT999822B (en) * | 1973-11-26 | 1976-03-10 | Belcit Italia Spa | DEVICE FOR ADJUSTING THE THICKNESS OF THE COATING SUSPENSION LAYER DEPOSED ON A CONTINUOUS PAPER BELT IN A COATING MACHINE |
| JPS55156086A (en) * | 1979-05-23 | 1980-12-04 | Kanzaki Paper Mfg Co Ltd | Thermosensitive recording means |
-
1971
- 1971-09-21 JP JP7361471A patent/JPS535819B2/ja not_active Expired
-
1972
- 1972-09-21 DE DE2246286A patent/DE2246286C3/en not_active Expired
- 1972-09-21 GB GB4378672A patent/GB1404674A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2246286A1 (en) | 1973-04-05 |
| JPS4840460A (en) | 1973-06-14 |
| DE2246286C3 (en) | 1974-12-05 |
| DE2246286B2 (en) | 1974-05-09 |
| JPS535819B2 (en) | 1978-03-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |