Light sensing array device and apparatus incorporating such

Details Light sensing array device and apparatus incorporating such Light sensing array device and apparatus incorporating such

1996-11-22

1998-04-21

Le, Que

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250214R, 348308, H01J 4014

Patent

active

057420440

ABSTRACT:
A light sensing array device including an array of photoelectric light sensing elements (10) individually addressable via sets of address conductors (12, 14) for use, for example, in image sensing or data input using a light pen, which is operable also in a power generating mode in which sensing elements in the array produce electrical power in the manner of a solar cell. To this end, the sets of address conductors are selectively connected via switching means (20, 21, 37, 38) to power output terminals (42, 43). The generated power may be used to supplement a power supply, e.g. using a battery pack, of the device or of electronic apparatus, such as a notebook computer, incorporating the device.

REFERENCES:
patent: 4644406 (1987-02-01), Nishigaki et al.
patent: 5371351 (1994-12-01), Van Berkel

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