US5016037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash photographing system
Assignee: Minolta Co Ltd
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Filing: 1988-11-01
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Granted: 1991-05-14
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Expires: 2008-11-01
Abstract
Abstract A flash photographing system includes a camera body, a flash controller connected to the camera body and three flash devices: the first flash device is directly mounted on the camera body; the second flash device is mounted on the flash controller; and the third flash device is connected through a suitable cord to the flash controller. A microcomputer is provided in the camera body and also in each of the flash devices so as to control the three flash devices in various different modes of operations, such as simultaneous flash mode, sequence flash mode, and yet providing an appropriate amount of light for the proper exposure.
Inventors
- 👤 Nobuyuki Taniguchi
- 👤 Hiroshi Hosomizu
- 👤 Kenji Tsuji
- 👤 Takanobu Omaki
- 👤 Masaaki Nakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:03
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/05; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/0557; G03B2215/056
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
A state confirming device for detecting charge completion states of a plural number of flash light devices, each having a capacitor for storing a flash light energy, charge state detecting means for detecting a charge state of the capacitor to deliver a charge completion signal when the charge state is at a level higher than a certain determined value, and mount signal forming means for delivering a mount signal when the flash light is mounted, comprising: (a) a detecting circuit for detecting the charge completion signal and the mount signal from each of the flash light devices to produce a signal indicating the charge completion states when all of the charge completion signals from the flash light devices delivering the mount signal have been detected.
Claim 2
Dependent Claim
125 words
A state confirming device for detecting charge completion states of a plural number of flash light devices, each having a capacitor for storing a flash light energy, charge state detecting means for detecting a charge state of the capacitor to deliver a charge completion signal when the charge state is at a level higher than a certain determined value, and mount signal forming means for delivering a mount signal when the flash light is mounted, comprising: (a) a detecting circuit for detecting the charge completion signal and the mount signal from each of the flash light devices to produce a signal indicating the charge completion states when all of the charge completion signals from the flash light devices delivering the mount signal have been detected.
Claim 3
Dependent Claim
41 words
A device according to claim 1, wherein the mount signal forming means detects an operation state of a power source circuit of the flash light device to produce the mount signal when the power source circuit is in an operative state.
Claim 4
Dependent Claim
106 words
A state confirming device for detecting charge completion states of a plural number of flash light devices, each having a capacitor for storing a flash light energy and charge state detecting means for detecting a charge state of the capacitor to produce a charge completion signal when the charge state is at a level higher than a certain determined value, comprising: (a) connecting parts to be connected to each of the flash light devices; and (b) a detecting circuit for producing a signal indicating the charge completion when all of the charge completion signals from the flash light devices connected to the connecting parts are detected.
Claim 5
Dependent Claim
106 words
A state confirming device for detecting charge completion states of a plural number of flash light devices, each having a capacitor for storing a flash light energy and charge state detecting means for detecting a charge state of the capacitor to produce a charge completion signal when the charge state is at a level higher than a certain determined value, comprising: (a) connecting parts to be connected to each of the flash light devices; and (b) a detecting circuit for producing a signal indicating the charge completion when all of the charge completion signals from the flash light devices connected to the connecting parts are detected.
Claim 6
Dependent Claim
64 words
A device according to claim 3, wherein the connecting parts are provided for each of the flash light devices, and wherein the detecting circuit includes a second detecting circuit for detecting the connecting parts connected to the flash light devices and a third detecting circuit for detecting all of the charge completion signal inputted via the connecting parts detected by the second detecting circuit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |