Desktop computer monitor power control using keyboard controller

Details Desktop computer monitor power control using keyboard controller Desktop computer monitor power control using keyboard controller

1995-02-02

1997-05-13

Sheikh, Ayaz R.

G06F 132

Patent

active

056301448

ABSTRACT:
A desktop computer power controller uses the keyboard controller of the computer to time the duration of keyboard or other input device inactivity and to assert a power control signal when the duration exceeds a predetermined threshold value. A power control unit coupled to the keyboard controller interrupts power to a peripheral device such as a video monitor when the duration of inactivity exceeds the threshold value. In an alternative embodiment, the power control unit switches the peripheral device into a low-power mode when the duration of inactivity exceeds the threshold value. Once in low-power mode, the keyboard controller switches the device back to normal mode upon detecting resumed activity on the keyboard or other input device.

REFERENCES:
patent: 4285043 (1981-08-01), Hashimoto et al.
patent: 4317181 (1982-02-01), Teza et al.
patent: 4365290 (1982-12-01), Nelms et al.
patent: 4649373 (1987-03-01), Bland et al.
patent: 4698748 (1987-10-01), Juzswik et al.
patent: 4841440 (1989-06-01), Yonezu et al.
patent: 4851987 (1989-07-01), Day
patent: 5041964 (1991-08-01), Cole et al.
patent: 5083266 (1992-01-01), Watanabe
patent: 5167024 (1992-11-01), Smith et al.
patent: 5214785 (1993-05-01), Fairweather
patent: 5237692 (1993-08-01), Raasch et al.
patent: 5249298 (1993-09-01), Bolan et al.
patent: 5283906 (1994-02-01), Chen
patent: 5347167 (1994-09-01), Singh
patent: 5355503 (1994-10-01), Soffel et al.
patent: 5371693 (1994-12-01), Nakazoe
patent: 5390350 (1995-02-01), Chung et al.
patent: 5454112 (1995-09-01), Kadono et al.
Intel386.TM. SL Microprcessor SuperSet System Design Guide, Chapter 14, "System and Power Management," 1992, pp. 14-1 through 14-7.
PicoPower Technology, Inc., "The PicoPower `Evergreen,` 486/386DX Portable Computer Core Chip," Preliminary Data Book, Version 1.3.1, Sep. 16, 1992, pp. i through 65.
APPIAN, "P94 PowerMizer.TM. Power Manager Controller, Advanced Product Description," The New Vision In Systems Solutions, Nov. 1990 pp. 1 though 4 and 6.
Interarc III Platform Designer's Guide, Western Digital, "WD7600LP Chip Set, Interarc III Functionality," Advance Information, Dec. 12, 1990, pp. 8 through 11.
VLSI Technology, Inc., "Advance Information, VL82C322A,"pp. 1-2, 4-15, 21-23, 27-29.
Motorola Semiconductor Technical Data, "8-Bit Microcomputer, LAPKAT MC 68HC05G8," Product Preview (Rev. 1.0), Motorola Inc., 1990, pp. Intro 1-3, APX B-1, A7-1 to A7-3.

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