Title :
A bar code reader IC
Author_Institution :
Hewlett-Packard Laboratories, Palo Alto, CA, USA
Abstract :
A self-contained bar-code reader chip, using analog switched-capacitor techniques, will be described. Circuit employs a standard Si-gate digital CMOS process to combine an on-chip photodiode with preamplification, rejection of background illumination, and ac-coupled detection.
Keywords :
Capacitors; Circuits; Clocks; Filters; Frequency; Light emitting diodes; Photoconductivity; Sampling methods; Timing; Voltage;
Conference_Titel :
Solid-State Circuits Conference. Digest of Technical Papers. 1982 IEEE International
Conference_Location :
San Francisco, CA, USA
DOI :
10.1109/ISSCC.1982.1156293
