Registers – Coded record sensors – Particular sensor structure
Patent
1995-08-07
1997-07-15
Hajec, Donald T.
Registers
Coded record sensors
Particular sensor structure
235455, 235462, 235466, G06K 710
Patent
active
056486502
ABSTRACT:
An optical reading apparatus (bar code reader) including a plurality of light emitting elements, each light emitting element emitting light in different directions onto an information recording surface which has a linear recording (bar code pattern) printed thereon. A light receiving element receives reflected light from the information recording surface and generates a recording medium read signal which is transmitted to a signal processing section for converting the recording medium read signal into a display signal. The recording medium read signal is also transmitted to a regular reflection detection section. When the regular reflection detection section detects the occurrence of a regular reflection condition from the recording medium read signal, the regular reflection detection section transmits a regular reflection detection signal to a driving controlling section which controls light emission from the plurality of light emitting elements. In response to the regular reflection detection signal, the controlling driving section turns off the light emitting element whose emitted light is causing the regular reflection condition, thereby eliminating the occurrence of the regular reflection condition.
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Kanno Tsutomu
Nabeya Hajime
Sugifune Shin
Alps Electric Co. ,Ltd.
Bever Patrick T.
Hajec Donald T.
Lee Michael G.
Shoup Guy W.
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