Patent US4742369A successfully refreshed from Google Patents.
US4742369A
Expired / Lapsed
US
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Electronic still camera
Assignee: Casio Computer Co Ltd
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Filing: 1987-07-28
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Granted: 1988-05-03
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Expires: 2007-07-28
Abstract
Abstract In an electronic still camera, a solid-state imaging element and a photosensitive film which receive an object image and arranged on the optical path of an optical lens system. The object image is simultaneously formed on the solid-state imaging element and the photosensitive film upon depression of a shutter switch.
Inventors
- 👤 Hiroshi Ishii
- 👤 Tatsuyuki Seki
- 👤 Eiji Nakazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:29
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/21; H04N1/2104; H04N1/2112; H04N1/2116; G; G03; G03B; G03B19/00; G03B19/02; G11; G11B; G11B31/00; G11B31/006; H04N25/00; H04N2101/00; Y; Y10; Y10S; Y10S358/00; Y10S358/906
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
374 words
An electronic still camera, comprising: optical lens system means including a lens and a diaphragm; solid-state imaging element means on which an object image incident through said optical lens system means is focused; image signal storage means having a plurality of memory areas, and coupled to said solid-state imaging element means, for storing in each of said memory areas an image signal corresponding to the object image focused on said solid-state imaging element means; means for receiving photosensitive film means arranged at a position different from said solid-state imaging element means and on which the object image incident through said optical lens system means is focused; shutter means arranged in front of said photosensitive film means, and normally closed for preventing the object image incident through said optical lens system means from reaching said photosensitive film means; switch means; control means coupled to said switch means, said control means including means for outputting first, second and third control signals when said switch means is operated; storage control means for controlling the storing of a still image signal, said storage control means including means responsive to said first control signal for causing said image signal storage means to sequentially store in different memory areas still image signals which correspond to respective object image which are incident through said optical lens system means and which are focused on said solid-state imaging element means; shutter drive means responsive to said second control signal for opening said shutter means so that a still image of the object image, which is incident through said optical lens system means, is formed on photosensitive film means in said receiving means; and optical system control means responsive to said third control signal for controlling the amounts of light representing an object image which pass through said diaphragm of said control lens system means during the operation of said storage control means and during the operation of said shutter drive means, so that the amount of light representing the object image at the position of said solid-state imaging element means during operation of said storage control means, is substantially equal to the amount of light representing the object image at the position of said receiving means during operation of said shutter drive means.
Claim 2
Dependent Claim
374 words
An electronic still camera, comprising: optical lens system means including a lens and a diaphragm; solid-state imaging element means on which an object image incident through said optical lens system means is focused; image signal storage means having a plurality of memory areas, and coupled to said solid-state imaging element means, for storing in each of said memory areas an image signal corresponding to the object image focused on said solid-state imaging element means; means for receiving photosensitive film means arranged at a position different from said solid-state imaging element means and on which the object image incident through said optical lens system means is focused; shutter means arranged in front of said photosensitive film means, and normally closed for preventing the object image incident through said optical lens system means from reaching said photosensitive film means; switch means; control means coupled to said switch means, said control means including means for outputting first, second and third control signals when said switch means is operated; storage control means for controlling the storing of a still image signal, said storage control means including means responsive to said first control signal for causing said image signal storage means to sequentially store in different memory areas still image signals which correspond to respective object image which are incident through said optical lens system means and which are focused on said solid-state imaging element means; shutter drive means responsive to said second control signal for opening said shutter means so that a still image of the object image, which is incident through said optical lens system means, is formed on photosensitive film means in said receiving means; and optical system control means responsive to said third control signal for controlling the amounts of light representing an object image which pass through said diaphragm of said control lens system means during the operation of said storage control means and during the operation of said shutter drive means, so that the amount of light representing the object image at the position of said solid-state imaging element means during operation of said storage control means, is substantially equal to the amount of light representing the object image at the position of said receiving means during operation of said shutter drive means.
Claim 3
Dependent Claim
41 words
The camera of claim 1, further comprising a reflection mirror arranged in the optical path of said optical lens system for selectively causing the object image to be incident on said solid-state imaging element means or on said photosensitive film means.
Claim 4
Dependent Claim
23 words
The camera of claim 1, wherein said solid-state imaging element means is arranged on a reflection optical path formed by said reflection mirror.
Claim 5
Dependent Claim
19 words
The camera of claim 1, wherein said control means outputs said first and second control signals at different times.
Claim 6
Dependent Claim
34 words
The camera of claim 1, wherein: said switch means comprises a self-return type push-button switch; and said control means outputs said first and second control signals upon a single depression of said push-button switch.
Claim 7
Dependent Claim
14 words
The camera of claim 1, wherein said storage means comprises a magnetic floppy disk.
Claim 8
Dependent Claim
12 words
The camera of claim 1, wherein said storage means comprises a RAM.
Claim 9
Dependent Claim
25 words
The camera of claim 1, further comprising read control means for reading the still image signals stored in said image signal storage means for display.
Claim 10
Dependent Claim
45 words
The camera of claim 8, wherein said read control means comprises: key switch means for reading out from said storage means an image signal of a still image stored therein; and display means for displaying the image signal read out by said key switch means.
Claim 11
Dependent Claim
14 words
The camera of claim 9, wherein said display means is a liquid-crystal display device.
Claim 12
Dependent Claim
43 words
The camera of claim 8, wherein said read control means comprises: number storage means for storing a storage number corresponding to the number of object images stored in said storage means; and display means for displaying a content of said number storage means.
Claim 13
Dependent Claim
36 words
The camera of claim 1, further comprising: date counting means for counting at least date data; and date storage control means for causing said storage means to store date data provided by said date counting means.
Claim 14
Dependent Claim
40 words
The camera of claim 1, further comprising: key-operation input means for inputting character and numeral data; and numeral storage control means for causing said storage means to store one of character and numeral data input from said key-operation input means.
Claim 15
Dependent Claim
47 words
The camera of claim 1, further comprising: voice input means for inputting an external voice; and voice storage control means including means for converting the voice input by said voice input means into voice data, and means for causing said storage means to store the voice data.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |