US5452277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adaptive system for optimizing disk drive power consumption
Assignee: HGST Netherlands BV
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Filing: 1993-12-30
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Granted: 1995-09-19
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Expires: 2013-12-30
Abstract
Abstract A disk drive power manager that compares energy usage with a predetermined profile to select one of several reduced-power operating modes. An energy usage register is updated at regular intervals according to the energy used during each time interval. An attenuated average energy usage value is obtained by attenuating the energy usage measures over time and integrating the results. The average energy level is compared with several predetermined energy threshold profiles to select a full- or reduced-power operating mode. Operating mode selection automatically adapts to the usage pattern to optimally balance power consumption with operational accessibility.
Inventors
- 👤 Christopher H. Bajorek
- 👤 Thomas W. Glaser
- 👤 Klaas B. Klaassen
- 👤 Charles R. Nielsen
- 👤 George R. Santana
- 👤 Gordon J. Smith
- 👤 David A. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:30
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/26; G06F1/32; G06F1/3203; G06F1/3206; G06F1/3215; G06F1/3234; G06F1/325; G06F1/3268; G11; G11B; G11B19/00; G11B19/20; Y; Y02; Y02D; Y02D10/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
152 words
A data storage disk drive system having a plurality of separately-powered components, said system comprising: power input means for accepting operating power from a power source; energy monitor means coupled to said power input means for creating an energy usage signal E representing the average power consumed by said data storage disk drive system over a time interval; comparator means coupled to said energy monitor means for creating a plurality of mode command signals each corresponding to said energy usage signal E value exceeding the value of one of a plurality of energy usage threshold signals; and mode controller means coupled to said comparator means and to said power input means for selecting responsive to said mode command signals one of a plurality of operating modes for said data storage disk drive system, each said operating mode representing the connection of selected ones of said separately-powered components to said power input means.
Claim 2
Dependent Claim
152 words
A data storage disk drive system having a plurality of separately-powered components, said system comprising: power input means for accepting operating power from a power source; energy monitor means coupled to said power input means for creating an energy usage signal E representing the average power consumed by said data storage disk drive system over a time interval; comparator means coupled to said energy monitor means for creating a plurality of mode command signals each corresponding to said energy usage signal E value exceeding the value of one of a plurality of energy usage threshold signals; and mode controller means coupled to said comparator means and to said power input means for selecting responsive to said mode command signals one of a plurality of operating modes for said data storage disk drive system, each said operating mode representing the connection of selected ones of said separately-powered components to said power input means.
Claim 3
Dependent Claim
33 words
The system of claim 1 wherein said mode controller means further comprises: fuzzy logic means for selecting said one operating mode responsive to the recent values of said plurality of mode command signals.
Claim 4
Dependent Claim
48 words
The system of claim 1 wherein said comparator means further comprises: generator means for creating at least one of said plurality of energy usage threshold signals such that said at least one energy usage threshold signal value varies over time responsive to selection of said one operating mode.
Claim 5
Dependent Claim
28 words
The system of claim 1 wherein said plurality of system operating modes includes partial-power modes wherein at least one of said separately-powered components is operated at reduced power.
Claim 6
Dependent Claim
25 words
The system of claim 3 wherein said at least one energy usage threshold signal is adjusted responsive to the history of said operating mode selection.
Claim 7
Dependent Claim
152 words
A Direct Access Storage Device (DASD) including a plurality of separately-powered components, said DASD comprising: power input means for accepting operating power from a power source; energy monitor means coupled to said power input means for creating an energy usage signal E representing the average power consumed by said data storage disk drive system over a time interval; comparator means coupled to said energy monitor means for creating a plurality of mode command signals each corresponding to said energy usage signal E value exceeding the value of one of a plurality of energy usage threshold signals; and mode controller means coupled to said comparator means and to said power input means for selecting responsive to said mode command signals one of a plurality of operating modes for said data storage disk drive system, each said operating mode representing the connection of selected ones of said separately-powered components to said power input means.
Claim 8
Dependent Claim
152 words
A Direct Access Storage Device (DASD) including a plurality of separately-powered components, said DASD comprising: power input means for accepting operating power from a power source; energy monitor means coupled to said power input means for creating an energy usage signal E representing the average power consumed by said data storage disk drive system over a time interval; comparator means coupled to said energy monitor means for creating a plurality of mode command signals each corresponding to said energy usage signal E value exceeding the value of one of a plurality of energy usage threshold signals; and mode controller means coupled to said comparator means and to said power input means for selecting responsive to said mode command signals one of a plurality of operating modes for said data storage disk drive system, each said operating mode representing the connection of selected ones of said separately-powered components to said power input means.
Claim 9
Dependent Claim
32 words
The DASD of claim 6 wherein said mode controller means comprises: fuzzy logic means for selecting said one operating mode responsive to the recent values of said plurality of mode command signals.
Claim 10
Dependent Claim
48 words
The DASD of claim 6 wherein said comparator means further comprises: generator means for creating at least one of said plurality of energy usage threshold signals such that said at least one energy usage threshold signal value varies over time responsive to selection of said one operating mode.
Claim 11
Dependent Claim
28 words
The DASD of claim 6 wherein said plurality of system operating modes includes partial-power modes wherein at least one of said separately-powered components is operated at reduced power.
Claim 12
Dependent Claim
25 words
The DASD of claim 8 wherein said at least one energy usage threshold signal is adjusted responsive to the history of said operating mode selection.
Claim 13
Dependent Claim
152 words
An optical disk data storage device including a plurality of separately-powered components, said device comprising: power input means for accepting operating power from a power source; energy monitor means coupled to said power input means for creating an energy usage signal E representing the average power consumed by said data storage disk drive system over a time interval; comparator means coupled to said energy monitor means for creating a plurality of mode command signals each corresponding to said energy usage signal E value exceeding the value of one of a plurality of energy usage threshold signals; and mode controller means coupled to said comparator means and to said power input means for selecting responsive to said mode command signals one of a plurality of operating modes for said data storage disk drive system, each said operating mode representing the connection of selected ones of said separately-powered components to said power input means.
Claim 14
Dependent Claim
152 words
An optical disk data storage device including a plurality of separately-powered components, said device comprising: power input means for accepting operating power from a power source; energy monitor means coupled to said power input means for creating an energy usage signal E representing the average power consumed by said data storage disk drive system over a time interval; comparator means coupled to said energy monitor means for creating a plurality of mode command signals each corresponding to said energy usage signal E value exceeding the value of one of a plurality of energy usage threshold signals; and mode controller means coupled to said comparator means and to said power input means for selecting responsive to said mode command signals one of a plurality of operating modes for said data storage disk drive system, each said operating mode representing the connection of selected ones of said separately-powered components to said power input means.
Claim 15
Dependent Claim
37 words
The optical disk data storage device of claim 11 wherein said mode controller means further comprises: fuzzy logic means for selecting said one operating mode responsive to the recent values of said plurality of mode command signals.
Claim 16
Dependent Claim
52 words
The optical disk data storage device of claim 11 wherein said comparator means further comprises: generator means for creating at least one of said plurality of energy usage threshold signals such that said at least one energy usage threshold signal value varies over time responsive to selection of said one operating mode.
Claim 17
Dependent Claim
32 words
The optical disk data storage device of claim 11 wherein said plurality of system operating modes includes partial-power modes wherein at least one of said separately-powered components is operated at reduced power.
Claim 18
Dependent Claim
29 words
The optical disk data storage device of claim 13 wherein said at least one energy usage threshold signal is adjusted responsive to the history of said operating mode selection.
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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) | 1998-09-18 | 1999-03-20 | 1999-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-18 | 2003-03-20 | 2003-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-18 | 2007-03-20 | 2007-09-19 | $7700.00 | Window Closed / Lapsed |