Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
Patent
1997-10-15
2000-01-04
Shalwala, Bipin
Computer graphics processing and selective visual display system
Display peripheral interface input device
Including keyboard
345156, 345903, 361680, 361681, 3647081, 235 61R, G09G 500
Patent
active
060115440
ABSTRACT:
When coordinate data are entered from a tablet with a pen, the pen is operated on the tablet while depressing a predetermined key of a keyboard. A signal generated by the depression of the predetermined key is supplied to a keyboard controller. Upon reception of the signal, the keyboard controller stops sending key code data entered from the keyboard to an input/output controller. In this manner, undesirable data entry due to the improper operation of the keyboard is prevented when coordinate data are entered with the pen.
REFERENCES:
patent: 4372694 (1983-02-01), Bovio et al.
patent: 4667299 (1987-05-01), Dunn
patent: 5148153 (1992-09-01), Haymond
patent: 5754395 (1998-05-01), Hsu et al.
Chang Kent
Kabushiki Kaisha Toshiba
Shalwala Bipin
LandOfFree
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