US4500183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film cassette and a photographing device using the same
Assignee: Olympus Corp
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Filing: 1983-01-06
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Granted: 1985-02-19
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Expires: 2003-01-06
Abstract
Abstract A film cassette (1) provided with a magnetic disc (3) for recording data relative to a film (2). The magnetic disc (3) of the film cassette (1) makes two revolutions when one frame of the film is wound up. Data stored in the magnetic disc (3) are read out with the first revolution of the disc, and renewed data are recorded on the disc (3) with the second revolution.
Inventors
- 👤 Kowji Tanikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:28
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/04; G; G03; G03B; G03B17/00; G03B17/18; G03B17/24; G03B17/28; G03B17/30; G03B7/00; G03B7/08; G03B7/091; G03B7/093; G03B7/24; G03B2206/00; G03B2206/008; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/244
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
79 words
A film cassette comprising: a film case including an unexposed film chamber section, and a film take-up chamber section having a film take-up spool therein; a film initially contained in said unexposed film chamber section and which is moved to said film take-up chamber section by being wound up on said film take-up spool; and a semiconductor memory means provided on said film case and storing and reading out data relative to the film contained in said film case.
Claim 2
Dependent Claim
79 words
A film cassette comprising: a film case including an unexposed film chamber section, and a film take-up chamber section having a film take-up spool therein; a film initially contained in said unexposed film chamber section and which is moved to said film take-up chamber section by being wound up on said film take-up spool; and a semiconductor memory means provided on said film case and storing and reading out data relative to the film contained in said film case.
Claim 3
Dependent Claim
14 words
The film cassette of claim 1, wherein said semiconductor memory is a nonvolatile memory.
Claim 4
Dependent Claim
20 words
The film cassette of claim 1, wherein said semiconductor memory comprises a memory backed up by a battery coupled thereto.
Claim 5
Dependent Claim
120 words
A photographing device for use in photographing by means of a film cassette that is able to wind a film contained in said film cassette, comprising: a semiconductor memory provided on said film cassette and storing data relative to the film contained in said film cassette; shutter driving means for driving a shutter in response to a shutter release action of the photographing device; film take-up means for winding up the film in said film cassette; recording-reproducing means for renewing the data recorded in said semiconductor memory on said film cassette with every shutter release action, and for reproducing the renewed data; and display means coupled to said recording-reproducing means for displaying the recorded data reproduced by said recording-reproducing means.
Claim 6
Dependent Claim
120 words
A photographing device for use in photographing by means of a film cassette that is able to wind a film contained in said film cassette, comprising: a semiconductor memory provided on said film cassette and storing data relative to the film contained in said film cassette; shutter driving means for driving a shutter in response to a shutter release action of the photographing device; film take-up means for winding up the film in said film cassette; recording-reproducing means for renewing the data recorded in said semiconductor memory on said film cassette with every shutter release action, and for reproducing the renewed data; and display means coupled to said recording-reproducing means for displaying the recorded data reproduced by said recording-reproducing means.
Claim 7
Dependent Claim
35 words
The photographing device of claim 4, wherein said semiconductor memory comprises a nonvolatile RAM and said recording-reproducing means comprises a CPU coupled to said RAM for controlling data write and read operations for said RAM.
Claim 8
Dependent Claim
35 words
The photographing device of claim 4, wherein said semiconductor memory stores flag data, frame number data, ASA data, film type data, overdevelopment data, film available period data, light source filter data, and exposure correction data.
Claim 9
Dependent Claim
121 words
A photographing method comprising: providing a film cassette in a photographing device, said film cassette containing a film and being capable of winding said film; providing a semiconductor memory on said film cassette; storing data relative to said film in said semiconductor memory on said film cassette; initiating a shutter release action of the photographing device to drive a shutter to make a photograph; winding up the film in said film cassette responsive to said shutter release action; renewing the data recorded in said semiconductor memory on said film cassette with every shutter release action so as to update the data relative to the film after each shutter release action; reproducing the renewed data; and displaying the renewed reproduced recorded data.
Claim 10
Dependent Claim
121 words
A photographing method comprising: providing a film cassette in a photographing device, said film cassette containing a film and being capable of winding said film; providing a semiconductor memory on said film cassette; storing data relative to said film in said semiconductor memory on said film cassette; initiating a shutter release action of the photographing device to drive a shutter to make a photograph; winding up the film in said film cassette responsive to said shutter release action; renewing the data recorded in said semiconductor memory on said film cassette with every shutter release action so as to update the data relative to the film after each shutter release action; reproducing the renewed data; and displaying the renewed reproduced recorded data.
Claim 11
Dependent Claim
14 words
The photographing method of claim 7, wherein said semiconductor memory comprises a non-volatile RAM.
Claim 12
Dependent Claim
42 words
The photographing method of claim 7, wherein said step of storing data comprises storing flag data, frame numbered data, ASA data, film type data, overdevelopment data, film available period data, light source filter data and exposure correction data in said semiconductor memory.
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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) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |