Apparatus and method for optically modulating electronic signals

Details Apparatus and method for optically modulating electronic signals Apparatus and method for optically modulating electronic signals

1997-04-09

1999-12-07

Shankar, Vijay

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345158, 345163, 345166, G09G 508

Patent

active

059991666

ABSTRACT:
A light source for generating a light beam which can be focused in many different directions or varied in intensity under control of a user's hand. A light sensor for detecting the focused light beam and generating a sensor signal based on either the light beam's area of coverage on the light sensor or the light beam's intensity. A modulation apparatus for receiving the sensor signal and in response modulating a computer variable and/or an electronic signal. A freeze circuit for inhibiting modulation when the sensor signal either exceeds or falls below a predetermined maximum or minimum level.

REFERENCES:
patent: 5181181 (1993-01-01), Glynn
patent: 5506605 (1996-04-01), Paley
patent: 5706026 (1998-01-01), Kent et al.
patent: 5734375 (1998-03-01), Knox et al.
patent: 5739812 (1998-04-01), Mochizuki et al.
Microsoft Press, Computer Dictionary The Comprehensive Standard for Business, School, Library, and Home (2.sup.nd Edition); Apr. 1, 1995; pp. 280-281.

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