Optical position determination

Details Optical position determination Optical position determination

1992-04-03

1995-12-19

Chin, Stephen

Telegraphy

Systems

Position coordinate determination for writing

345179, G08C 2100

Patent

active

054770122

ABSTRACT:
This invention relates to a coordinate sensor for detecting the position of a moveable detector relative to a data space coded with coordinate information by detecting and processing the coordinate information. It may be used for obtaining both two and three dimensional position related information, such as might be used for determining the position of a pen/pencil on paper for handwriting data input. It also may be used for detecting angular, rotational, and linear motion. The coordinate sensor provides an apparatus for precisely locating the position of a movable element within a space. More particularly, it provides an input/output apparatus for use with a computer that includes a movable element, whose exact position within a space can be determined without any physical connection between the movable element and the space. It comprises a data space formatted with a code for designating the coordinates of a point in the data space, a detector for detecting the code, a processor for processing data from the detector to determine the position of the point in the data space, and a data output method for human interface to the coordinate sensor.

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patent: 5075558 (1991-12-01), Nakagawa
patent: 5086197 (1992-02-01), Liou
patent: 5128526 (1992-07-01), Yoshida
patent: 5128528 (1992-07-01), Heninger
patent: 5214426 (1993-05-01), Minohara et al.
DataSweep 2, Specification Sheet, Soricon Corp., Jul. 6, 1992.

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