US5717319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method to reduce the power consumption of an electronic device comprising a voltage regulator
Assignee: Qualcomm Inc
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Filing: 1995-06-08
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Granted: 1998-02-10
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Expires: 2015-06-08
Abstract
Abstract The invention relates to a method to reduce the power consumption of an electronic device comprising at least one voltage regulator. At least one of the regulators (REG1-REG4) is switched off and on according to a predetermined duty cycle during such periods when the electronic device does not require the normal power supply ability of the regulator. This may be realized e.g. in a mobile phone during two successive control channel messages received from a base station when the mobile phone is in a so called power saving mode.
Inventors
- 👤 Harri Jokinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:33
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/577
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
An electronic device, comprising: at least one circuit having a normal operational mode having first power consumption requirements and a passive mode in which said at least one circuit has second reduced power consumption requirements; a voltage regulator for supplying a regulated voltage to the circuit; switching circuitry operable, when the circuit is in said passive mode having said reduced power requirement to switch the voltage regulator on and off according to a predetermined duty cycle wherein the voltage regulator does not consume power when off, a current accumulating component connected to the voltage regulator for accumulating current when the voltage regulator is switched on and to provide current to the circuit when the voltage regulator is switched off and not consuming power.
Claim 2
Dependent Claim
123 words
An electronic device, comprising: at least one circuit having a normal operational mode having first power consumption requirements and a passive mode in which said at least one circuit has second reduced power consumption requirements; a voltage regulator for supplying a regulated voltage to the circuit; switching circuitry operable, when the circuit is in said passive mode having said reduced power requirement to switch the voltage regulator on and off according to a predetermined duty cycle wherein the voltage regulator does not consume power when off, a current accumulating component connected to the voltage regulator for accumulating current when the voltage regulator is switched on and to provide current to the circuit when the voltage regulator is switched off and not consuming power.
Claim 3
Dependent Claim
25 words
An electronic device as in claim 1, wherein the voltage regulator is a linear voltage regulator which comprises an error amplifier and an output element.
Claim 4
Dependent Claim
23 words
An electronic device as in claim 2 wherein the electronic device comprises a plurality of said circuits supplied by a corresponding voltage regulator.
Claim 5
Dependent Claim
19 words
An electronic device as in claim 3, wherein said voltage regulators are supplied by a single voltage reference source.
Claim 6
Dependent Claim
25 words
An electronic device as in claim 4, further comprising a single auxiliary input by which a switching signal can be supplied to the voltage regulators.
Claim 7
Dependent Claim
15 words
An electronic device as in claim 1 wherein the current accumulating circuit is a capacitor.
References Cited (Backward Citations)
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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) | 2001-02-09 | 2001-08-11 | 2002-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-09 | 2005-08-11 | 2006-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-09 | 2009-08-11 | 2010-02-10 | $7700.00 | Window Closed / Lapsed |