US4692005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital data output from a camera
Assignee: Pentax Corp
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Filing: 1986-09-08
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Granted: 1987-09-08
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Expires: 2006-09-08
Abstract
Abstract A digitally controlled camera in which a DX code on a film cartridge is read by electrical terminals. Those same terminals are used to output digital data from the camera, such as exposure data or other signals from the digital control means.
Inventors
- 👤 Satoshi Takami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
G; G03; G03B; G03B43/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
A camera, comprising: at least one electrical terminal for contacting at different times a film cartridge and a reading device; switching means having a first state and a second state; means for reading an exposure code from said film cartridge through said electrical terminal when said switching means is in said first state; digital means responsive to said reading means for controlling photographic operations; and means for impressing upon said electrical terminal a digital signal derived from said digital means when said switching means is in said second state.
Claim 2
Dependent Claim
89 words
A camera, comprising: at least one electrical terminal for contacting at different times a film cartridge and a reading device; switching means having a first state and a second state; means for reading an exposure code from said film cartridge through said electrical terminal when said switching means is in said first state; digital means responsive to said reading means for controlling photographic operations; and means for impressing upon said electrical terminal a digital signal derived from said digital means when said switching means is in said second state.
Claim 3
Dependent Claim
26 words
A camera as recited in claim 1, wherein said digital means includes means for providing exposure data and wherein said digital signal comprises said exposure data.
Claim 4
Dependent Claim
46 words
A camera as recited in claim 2, further comprising: an optical detector; and an aperture sensor; and wherein said digital means provides brightness and aperture signals derived from said optical detector and said aperture sensor and wherein said digital signal comprises said brightness and aperture signals.
Claim 5
Dependent Claim
29 words
A camera as recited in claim 1, wherein said impressing means comprises tri-state buffering means controlled by said switching means and having an output connected to said electrical terminal.
Claim 6
Dependent Claim
19 words
A camera as recited in claim 1, wherein said at least one electrical terminal comprises a plurality of terminals.
Claim 7
Dependent Claim
36 words
A camera as recited in claim 1, further comprising a plurality of switches for respective photographic modes, said digital means being responsive to said switches, said switching means comprising means for discriminating states of said switches.
Claim 8
Dependent Claim
35 words
A camera as recited in claim 1, further comprising: supply voltage means; and means for providing a supply voltage signal from said supply voltage means; and wherein said digital signal comprises said supply voltage signal.
Claim 9
Dependent Claim
28 words
A camera as recited in claim 1, further comprising means for detecting a voltage level in said digital means and wherein said digital signal comprises said voltage level.
References Cited (Backward Citations)
US4423934A
Cited
JPH113215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-07 | 1991-03-09 | 1991-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-07 | 1995-03-09 | 1995-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-07 | 1999-03-09 | 1999-09-08 | $7700.00 | Window Closed / Lapsed |