Title: Signal transmitting interface system combining time compression and multiplexing

Abstract: Apparatus for transmitting particular output signals from a plurality of analog-to-digital converters to the guidance computer of an inertial navigation system. The number of channels of signals to be transmitted exceeds the number of available data lines. The A/D converter output is converted, according to its particular logic code, to a series of pulse counts which are thereafter multiplexed in a pulse combiner and applied to the data lines. During a first selected time interval, the pulses are accumulated for interleaving and transmission with the real time pulses in a second selected time interval. The multiplexing combines such interleaved pulses from one A/D converter output with those from another such output in alternate time intervals. Sync words are transmitted along with the data to permit the guidance computer software to demultiplex the data.

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Inventors: Meares, Lawrence G. (Rancho Palos Verdes, CA, US)
Simpson, Robert D. (Huntington Beach, CA, US)

Application Number: 820372
Filing Date: 1977-07-29
Publication_date: 1979-11-13
Assignee: McDonnell Douglas Corporation (Long Beach, CA)
Primary Class(es): 370/521 330/112, 370/537
Other Classes:
US Patent Ref:

3872257	Mar, 1975	Bleickardt et al.	179/15.
3872284	Mar, 1975	Seligman et al.	364/200.
3995120	Nov, 1976	Pachynsk, Jr.	179/15.
4034404	Jul, 1977	Nakagome et al.	179/15.
4049917	Sep, 1977	Copperi et al.	179/15.

Other Refs:
Primary Examiner: Brown, Thomas W.
Assistant Examiner:
Attorney: Bissell; Henry M.