Position encoder with column scanning and row sensing

Details Position encoder with column scanning and row sensing Position encoder with column scanning and row sensing

1980-09-12

1982-07-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250231SE, H01J 314

Patent

active

043385184

ABSTRACT:
An optical encoding arrangement for determining the position of a movable member is provided with an optically masked light transmitting coding element interposed between a light emitting array and a light detecting array so that the light detecting elements in the array are selectively energized in accordance with the position being measured. In particular, the encoder provides for transmission, by optical means, of a series of digital bytes of predetermined length, in a bit parallel byte serial format, with the successive bytes later being assembled into a usable data format.

REFERENCES:
patent: 3481042 (1969-12-01), Lemelson
patent: 3553466 (1971-06-01), Johnston
patent: 3573471 (1971-04-01), Kolb
patent: 3634848 (1972-01-01), Prunk et al.
patent: 3636635 (1972-01-01), Lemelson
patent: 3748043 (1973-07-01), Zipin
patent: 3824587 (1974-07-01), Fowler
patent: 3975633 (1976-08-01), Larkin
patent: 4011448 (1977-03-01), Hordeski
patent: 4047025 (1977-09-01), Lemelson
patent: 4291976 (1981-09-01), McMahon

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