Compact disc counter

Apparatus for counting compact discs stacked on a spindle with outer portions of adjacent discs normally separated by gaps formed by central bosses of the discs in which the stack is moved vertically through the space between transmitting optics which produce a pair of vertically spaced beams having...

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Bibliographic Details
Main Authors GOSS, FLOYD, PIETRZYKOSKI, ANTHONY, SMITH, SCOTT
Format Patent
LanguageEnglish
French
German
Published 21.12.1994
Edition5
Subjects
BASIC ELECTRONIC CIRCUITRY
CALCULATING
COMPUTING
COUNTING
COUNTING MECHANISMS
COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
DETECTING MASSES OR OBJECTS
ELECTRICITY
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
PULSE TECHNIQUE
TESTING
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Summary:Apparatus for counting compact discs stacked on a spindle with outer portions of adjacent discs normally separated by gaps formed by central bosses of the discs in which the stack is moved vertically through the space between transmitting optics which produce a pair of vertically spaced beams having a space therebetween equal to the distance between a pair of adjacent gaps of the stack and receiving optics including a detector which produces pulses in response to radiation from said beams which transverse the gaps. The time between a pair of successive pulses is measured and the second pulse of the pair is counted as two pulses when the measured time exceeds a predetermined time. The apparatus is arranged to operate with either of two types of spindles.
Bibliography:Application Number: EP19940104054