Responsive backlit hardwire button array providing illumination

Details Responsive backlit hardwire button array providing illumination Responsive backlit hardwire button array providing illumination

1997-06-11

1999-08-17

Ray, Gopal C.

Electrical computers and digital processing systems: support

Computer power control

Power conservation

713323, G06F 132

Patent

active

059387726

ABSTRACT:
A computer system including a small array of backlit buttons that can be used to control certain computer system functions. Each button includes a built-in backlight which preferably is a light emitting diode ("LED") that allows a user to see more easily the label on the button. Visual feedback that a button is pressed is provided to the user by turning off a button's backlight when the button is pressed. Thus, once the light in a button turns off, the user knows the button has been depressed sufficiently to activate the function associated with the button. In another aspect of the invention, the computer system may enter a low power consumption sleep mode in which most of the computer's functions are disabled. In the sleep mode the backlights in the button array are turned off to further save power. The computer system also includes a telephone answering machine ("TAM") capability which includes a backlit button that allows the user to play back a previously recorded telephone message. Additionally, the backlight in the TAM button repetitively blinks on and off to indicate the presence of a recorded telephone message. The TAM button's backlight will blink even when the computer is in the sleep mode.

REFERENCES:
patent: 3811025 (1974-05-01), Bach
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patent: 5072411 (1991-12-01), Yamaki
patent: 5363223 (1994-11-01), Beesley
patent: 5448675 (1995-09-01), Leone et al.
patent: 5549984 (1996-08-01), Dougherty
patent: 5630142 (1997-05-01), Crump et al.
patent: 5664119 (1997-09-01), Jeffries et al.
patent: 5718326 (1998-02-01), Larose et al.

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