Portable input apparatus

Details Portable input apparatus Portable input apparatus

1995-12-13

1997-12-23

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359152, 359157, 348734, H04B 1000

Patent

active

057011877

ABSTRACT:
A portable input apparatus used in conjunction with a controllable information processing apparatus which comprises a light receiving element receiving a base light emitted from a light emitting section of the controllable information processing apparatus and being composed of a first detector light receiving element, a second detector light receiving element and a reference light receiving element arranged therebetween, each being of a non-split type; an optical signal transmitting section transmitting an optical signal to the controllable information processing apparatus side; signal conversion sections converting an output current of the non-split type light receiving element and generating a time shared output voltage; a signal processing section processing the time shared output voltage to generate relative angle data; and a control section performing operation and calculation of the relative angle data to form a coordinate signal and transmitting the optical signal including the coordinate signal to the controllable information processing apparatus side.

REFERENCES:
patent: 5045843 (1991-09-01), Hansen
patent: 5561543 (1996-10-01), Ogawa

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