Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
Patent
1997-10-29
2000-03-21
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Including keyboard
345172, 345102, 341 22, G09G 500, G09G 336, H03K 1794
Patent
active
060408227
ABSTRACT:
An electronic luminescence keyboard system in a device which includes one or more keypads and an illuminated panel which displays information responsive to the pressing of at least one keypads is disclosed. The improvement comprises a conductor element for conducting a portion of the light from the illuminated panel and illuminator element coupled to the conductor element for illuminating one or more keypads with the portion of the light from the illuminated panel.
Through the use of a portion of the light from the display panel is utilized to illuminate the keyboard thereby allowing for observation of the keypads on the to keyboard when the surrounding area is dimly lit. The ELK system has no effect on the power consumption on the device. In an embodiment the ELK system provides for backlighting the keyboard. In a second embodiment the ELK system provides light to a top portion of the keypads.
REFERENCES:
patent: 5384516 (1995-01-01), Kawabata et al.
patent: 5397867 (1995-03-01), Demeo
patent: 5408060 (1995-04-01), Muurinen
patent: 5465193 (1995-11-01), Tracy
patent: 5703625 (1997-12-01), Snider et al.
Dinh Duc
Hjerpe Richard A.
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