Computer control apparatus including a gravity referenced inclin

Details Computer control apparatus including a gravity referenced inclin Computer control apparatus including a gravity referenced inclin

1987-09-14

1989-08-29

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

340709, 341 13, H03M 160

Patent

active

048621722

ABSTRACT:
Computer control apparatus uses sensing apparatus converts a mechanical movement into a direct current electrical signal. An electrical interface circuit is connected to the sensing apparatus for converting the direct current electrical signal into a pulse output used in controlling a computer. The preferred sensor is an inclinometer, which comprises an opaque body having a chamber. A light source is connected to the body to provide light in the chamber. Photocell apparatus is connected to the body to receive light emitted from the light source for providing an electrical resistance in relation to the amount of light received. Supported in the chamber is a liquid filter medium to absorb light emitted from the light source. A sufficient quantity of liquid filter medium is provided in the chamber to prevent light emitted from the light source from impinging upon the photocell apparatus in response to the angular placement of the body with respect to gravity.

REFERENCES:
patent: 3541541 (1970-11-01), Engelbart
patent: 3689840 (1972-09-01), Brown et al.
patent: 4468864 (1984-09-01), Westphal et al.
Bailey et al., Shaft Position and Direction Encoder, IBM Technical Disclosure Bulletin, vol. 14, No. 1, 6/1971, pp. 54 & 55.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, p. III-4.

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