Code reading apparatus having optimal battery voltage detection

Details Code reading apparatus having optimal battery voltage detection Code reading apparatus having optimal battery voltage detection

1998-11-06

2000-02-08

Grant, II, Jerome

Image analysis

Image sensing

Sensor control

358468, G06K 920, H04N 132

Patent

active

06023539&

ABSTRACT:
An illumination section illuminates a code on a recording medium, on which data about audio information is recorded as an optically readable code, by repeatedly emitting light at predetermined intervals. An image sensing section receives each of light beams reflected by the recording medium including the code illuminated by the illumination section in a read/scan operation for the code, and outputs a corresponding image sensing signal. A signal processing section decodes the data about the audio information by processing the image sensing signal output from the image sensing section. A reproduction output section reproduces the audio information on the basis of the data decoded by the signal processing section and outputs the information. A supply voltage detection section detects a supply voltage to a power supply circuit system including a battery used as a power supply of the apparatus. A detection timing control section controls the supply voltage detection section to detect the supply voltage at a predetermined timing in image sensing operation performed by the image sensing section at the time of light emission after the supply voltage to the power supply circuit system is turned on by a power switch and first light emission is performed by the illumination section.

REFERENCES:
patent: 5878395 (1999-03-01), Bennett

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