Input control apparatus, display control apparatus and display a

Details Input control apparatus, display control apparatus and display a Input control apparatus, display control apparatus and display a

1997-07-23

2000-06-20

Shankar, Vijay

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

345156, 345157, 178 1801, 178 1803, G09G 500, G09G 508, G08C 2100

Patent

active

060783133

ABSTRACT:
A touch panel type display apparatus includes an input controller having an input detector for detecting the start and end of an input period for a display panel, a reflecting circuit for reflecting the detection result of the input detector on a flag area, a notification circuit for notifying a display controller of the detection result, a period detector of detecting the elapse of a first period from the start of the input period on the basis of the recognition result of the flag area and repeatedly detecting the elapse of a second period shorter than the first period upon the elapse of the first period on the basis of the recognition result of the flag area, an input updating circuit for, when the end of the input period is detected before the first elapse of the second period, recognizing detection of the end of the input period as one input completion cycle, and when the input period continues after the first elapse of the second period, recognizing an input completion cycle every time the second period has elapsed. The display controller includes a receiver for receiving notification of the detection result from the input controller, a controller for controlling the display of the display panel according to the received detection result, and a reflecting circuit for reflecting the received detection result on the flag area.

REFERENCES:
patent: 5371846 (1994-12-01), Bates
patent: 5424730 (1995-06-01), Saselu et al.
patent: 5557299 (1996-09-01), Maynard et al.
patent: 5825349 (1998-10-01), Meier et al.

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