Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1989-07-21
1991-10-29
Olms, Douglas W.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359174, H04J 1400
Patent
active
050621017
ABSTRACT:
There is disclosed a data acquisition system for use, for example, in a facility management system, for receiving analog input information, converting the analog input information to multiple-bit digital data, synchronizing the multiple-bit digital data to a serial transfer clock, and restoring the digital data into a bit-parallel format for storage in memory and subsequent digital processing. The data acquisition system includes a plurality of inputs, each input being arranged to receive analog input information. An analog-to-digital converter converts the analog input information at each input to a multiple-bit data word wherein the bits of the data word are in bit-parallel format. A multiplexer couples each of the inputs to the analog-to-digital converter one at a time in succession and a parallel input-serial output register converts the parallel bits to a serial digital bit stream. An optical coupling circuit conveys the serial digital bit stream to a serial-input parallel-output latch by optically processing both the serial digital data stream and transfer enable clock pulses. The latch reconverts the serial digital bit stream to parallel bits of data and holds the parallel bits of data for the direct access, parallel transfer thereof into a memory.
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Johnson Service Company
Marcelo Melvin
Olms Douglas W.
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