Remote coordinate designating device

Details Remote coordinate designating device Remote coordinate designating device

1995-11-29

1999-09-07

Nguyen, Chanh

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345158, G09G 508

Patent

active

059494034

ABSTRACT:
A remote coordinate designating device has a remote control with a light emitting device for emitting light, and a controller for detecting a designated position by receiving light from the remote control at a distance from the remote control. One cycle of a light signal from the light emitting device is composed of switch data and a coordinate detection timing header at the head, and a coordinate detection carrier. The switch data and the coordinate detection timing header use the same frequency as the normal remote control frequency band, and the frequency of the coordinate detection carrier is lower than the frequency of the switch data and the coordinate detection timing header. The switch data contains on-off information about a switch for pointing, and coordinate detection is started when a predetermined time has passed from the rise of a burst portion in the switch data.

REFERENCES:
patent: 4745402 (1988-05-01), Auerbach
patent: 5351096 (1994-09-01), Park
patent: 5554980 (1996-09-01), Hashimoto et al.
patent: 5627565 (1997-05-01), Morishita

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