US3928858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for setting photographing conditions
Assignee: Canon Inc
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Filing: 1974-10-15
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Granted: 1975-12-23
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Expires: 1994-10-15
Abstract
Abstract A system for setting photographing conditions in which a switch means is engaged with a respective mechanism for setting various photographing informations and converts set values into signs or symbols, and digital information are obtained by selective change-over of the switch means in order to introduce digitalized photographing informations to an operation device.
Inventors
- 👤 Nobuaki Sakurada
- 👤 Soichi Nakamoto
- 👤 Tadashi Ito
- 👤 Fumio Ito
- 👤 Nobuhiko Shinoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:03
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/12; G03B17/14; G03B7/00; G03B7/08; G03B7/091; G03B7/095
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
89 words
A system for setting photographing informations of a camera comprising: a camera body having a digital exposure control means; an interchangeable lens attached to the camera body, having: an operation means for setting photographing information, and photographing information setting means having means for coding set values in correspondence to the values set by the operating means; and a connecting means for connecting the photographing information setting means to the digital exposure control means, and for supplying the digital output of the setting means to the digital exposure control means.
Claim 2
Independent Claim
89 words
A system for setting photographing informations of a camera comprising: a camera body having a digital exposure control means; an interchangeable lens attached to the camera body, having: an operation means for setting photographing information, and photographing information setting means having means for coding set values in correspondence to the values set by the operating means; and a connecting means for connecting the photographing information setting means to the digital exposure control means, and for supplying the digital output of the setting means to the digital exposure control means.
Claim 3
Dependent Claim
15 words
A system according to claim 1 in which the coding means is a rotary encoder.
Claim 4
Dependent Claim
18 words
A system according to claim 1 in which the connecting means comprises a pin plug and a socket.
Claim 5
Independent Claim
94 words
A system for setting photographing informations of a camera comprising: a camera body having a digital exposure control means; an interchangeable lens attached to the camera body, and having: a diaphragm adjusting ring for setting diaphragm values, and a diaphragm information setting means having means for coding its set diaphragm values in correspondence to values set by the diaphragm adjusting ring; and a connecting means for connecting the diaphragm information setting means to the digital exposure control means, and for supplying the digital output of the setting means to the digital exposure control means.
Claim 6
Independent Claim
94 words
A system for setting photographing informations of a camera comprising: a camera body having a digital exposure control means; an interchangeable lens attached to the camera body, and having: a diaphragm adjusting ring for setting diaphragm values, and a diaphragm information setting means having means for coding its set diaphragm values in correspondence to values set by the diaphragm adjusting ring; and a connecting means for connecting the diaphragm information setting means to the digital exposure control means, and for supplying the digital output of the setting means to the digital exposure control means.
Claim 7
Independent Claim
181 words
A system for setting photographing informations of a camera comprising: a camera body having a digital exposure control means; an interchangeable lens attached to the camera body, having: a diaphragm adjusting ring, a diaphragm information setting means having a means for coding its set diaphragm values in correspondence to the values set by the diaphragm adjusting ring, a distance adjusting ring for setting distance, and a distance information setting means having coding means for distance information which codes its set values in correspondence to values set by the distance adjusting ring; a first connecting means for connecting the diaphragm information setting means to the digital exposure control means; a second connecting means for connecting the distance information setting means to the digital exposure control means; and a switch means provided between the first and second connecting means and the digital exposure control means, said switch means connecting the first connecting means to the digital exposure control means at the time of ordinary photographing, and connecting the second connecting means to the digital exposure control means at the time of flash photographing.
Claim 8
Independent Claim
181 words
A system for setting photographing informations of a camera comprising: a camera body having a digital exposure control means; an interchangeable lens attached to the camera body, having: a diaphragm adjusting ring, a diaphragm information setting means having a means for coding its set diaphragm values in correspondence to the values set by the diaphragm adjusting ring, a distance adjusting ring for setting distance, and a distance information setting means having coding means for distance information which codes its set values in correspondence to values set by the distance adjusting ring; a first connecting means for connecting the diaphragm information setting means to the digital exposure control means; a second connecting means for connecting the distance information setting means to the digital exposure control means; and a switch means provided between the first and second connecting means and the digital exposure control means, said switch means connecting the first connecting means to the digital exposure control means at the time of ordinary photographing, and connecting the second connecting means to the digital exposure control means at the time of flash photographing.
References Cited (Backward Citations)
US3641892A
Cited
US3798662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |