Spatula-shaped light pen

Details Spatula-shaped light pen Spatula-shaped light pen

1982-02-04

1984-09-18

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340708, 235472, 382 59, G09G 100

Patent

active

044727100

ABSTRACT:
A light pen is provided with an elongated or spatula-shaped light receiving end which houses a plurality of optical fiber tubes in either a linear or two-dimensional array. The device is useful for simultaneously reading the coordinates of a plurality of points within a single scan period of a CRT image produced using the NTSC system. A slideable light interceptor may be provided in the operator of the light pen so as to limit the size or the proportion of the array receiving incident light.

REFERENCES:
patent: 3505666 (1970-04-01), Thorpe
patent: 3680078 (1972-07-01), Baskin et al.
patent: 3758717 (1973-09-01), Granzotti
patent: 3825746 (1974-07-01), Kendler et al.
patent: 3918028 (1975-11-01), Humphrey et al.

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