Process for positioning a record changing device having reflecti

Details Process for positioning a record changing device having reflecti Process for positioning a record changing device having reflecti

Filed on

1992-03-16

Date issued

1993-09-28

Examiner

Nelms, David C.

Patent Class

Radiant energy

SubClass

Photocells; circuits and apparatus

SubSubClass

Optical or pre-photocell system

Other Related Categories

414274, 369 36, G01V 904

Type

Patent

Status

active

Patent number

052488888

Description

ABSTRACT:
A method of adjusting the moveable unit of a positioning device having a light source and a photodetector for scanning markers identifying positions at which the moveable unit is to be located includes the steps of accurately and manually positioning the unit at one of the identifying positions. The unit is then automatically driven to a second position where the output signal of the photodetector is maximum. The deviation from the first position to the second position is stored as an offset which is subsequently used to accurately position the moveable unit.

REFERENCES:
patent: 4580254 (1986-04-01), Hojyo et al.
patent: 4839758 (1989-06-01), Honjoh
patent: 5099465 (1992-03-01), Geiger et al.
patent: 5161138 (1992-11-01), Caspers

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