Multi-channel scanning system with common decoder

Details Multi-channel scanning system with common decoder Multi-channel scanning system with common decoder

2005-09-20

2005-09-20

Kim, Ahshik (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S462010, C235S462170, C235S462250

Reexamination Certificate

active

06945463

ABSTRACT:
A multi-channel scanner having several photodetectors (12a-12d) and several lasers (10a-10d) for scanning along multiple paths (50a-50d) incorporates a separate input channel (26a-26d) for each photodetector. Each channel provides a sequence of data elements representing light reflected from points along the associated scanning path, and the data elements from each channel are stored in separate FIFO buffers (20a-20d). A multiplexer (22) takes data elements from the various buffers so as from a consolidated stream of data elements (80) incoporating the data elements from the various channels. This stream is processed in a single decoder (24) to recover data denoted by the bar code. Use of a single decoder minimizes the cost and size of the system.

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