Patent US1099766A successfully refreshed from Google Patents.
US4631418A
Expired / Lapsed
US
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Power supply control device
Assignee: Canon Inc
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Filing: 1985-11-12
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Granted: 1986-12-23
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Expires: 2005-11-12
Abstract
Abstract A power supply control device is usable in a battery-driven electronic device, in which a power down mode is adopted when the battery is mounted.
Inventors
- 👤 Shigeru Toyomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:00
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/26
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
A power supply control device for use in battery-powered electronic apparatus, comprising: transfer gate means connected between a battery and the battery-powered electronic apparatus for selectively supplying power to the battery-powered electronic apparatus; a flip-flop circuit for selectively opening and closing said transfer gate means; means for generating a first signal upon electrical loading the battery; and means for generating a second signal to instruct the start of operation of the battery-powered electronic apparatus; wherein said flip-flop circuit receives the first signal at one input thereof and the second signal at the other input thereof so that said transfer gate means is opened by the first signal and is subsequently closed by the second signal to supply power to the battery-powered electronic apparatus.
Claim 2
Dependent Claim
123 words
A power supply control device for use in battery-powered electronic apparatus, comprising: transfer gate means connected between a battery and the battery-powered electronic apparatus for selectively supplying power to the battery-powered electronic apparatus; a flip-flop circuit for selectively opening and closing said transfer gate means; means for generating a first signal upon electrical loading the battery; and means for generating a second signal to instruct the start of operation of the battery-powered electronic apparatus; wherein said flip-flop circuit receives the first signal at one input thereof and the second signal at the other input thereof so that said transfer gate means is opened by the first signal and is subsequently closed by the second signal to supply power to the battery-powered electronic apparatus.
Claim 3
Dependent Claim
44 words
A power supply control device according to claim 1, wherein the battery-powered electronic apparatus generates a third signal when no instruction is directed to the control device for a predetermined time interval and said flip-flop circuit receives the third signal at said one input.
Claim 4
Dependent Claim
18 words
A power supply control device according to claim 1, wherein the battery-powered electronic apparatus controls a printing device.
Claim 5
Dependent Claim
118 words
A power source controller for battery driven electronic apparatus, comprising: detection means for detecting the electrical loading of a battery to serve as a power source for the apparatus; status storing means connected to said detection means and responsive to the detection of battery loading for storing a power-off status wherein power is not supplied from the battery to the apparatus; power switch means connected to said status storing means for enabling an operator to selectively store one of a power-on and a power-off status in said status storing means; and means responsive to the power-on and power off status of said status storing means for respectively supplying or cutting off power from the battery to the apparatus.
Claim 6
Dependent Claim
118 words
A power source controller for battery driven electronic apparatus, comprising: detection means for detecting the electrical loading of a battery to serve as a power source for the apparatus; status storing means connected to said detection means and responsive to the detection of battery loading for storing a power-off status wherein power is not supplied from the battery to the apparatus; power switch means connected to said status storing means for enabling an operator to selectively store one of a power-on and a power-off status in said status storing means; and means responsive to the power-on and power off status of said status storing means for respectively supplying or cutting off power from the battery to the apparatus.
Claim 7
Dependent Claim
16 words
A power source according to claim 4, wherein said status storing means includes a flip-flop circuit.
Claim 8
Dependent Claim
23 words
A power source controller according to claim 4, further comprising gate means for controlling power-off and power-on states of said status storing means.
Claim 9
Dependent Claim
17 words
A power source controller according to claim 4, wherein the apparatus includes display means and printing means.
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) | 1989-12-22 | 1990-06-23 | 1990-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-22 | 1994-06-23 | 1994-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-22 | 1998-06-23 | 1998-12-23 | $7700.00 | Window Closed / Lapsed |