NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login

Press Enter or click the Search button to begin your search.

Back to Results
Frequency division multiplex techniqueA system for monitoring a plurality of condition responsive devices is described. It consists of a master control station and a remote station. The master control station is capable of transmitting command signals which includes a parity signal to a remote station which transmits the signals back to the command station so that such can be compared with the original signals in order to determine if there are any transmission errors. The system utilizes frequency sources which are 1.21 multiples of each other so that no linear combination of any harmonics will interfere with another frequency.
Document ID
19730011449
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Brey, H. (Sperry Rand Corp. Huntsville, AL, United States)
Date Acquired
September 2, 2013
Publication Date
February 6, 1973
Subject Category
Communications
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-212921
Patent Number: NASA-CASE-KSC-10521
Patent Number: US-PATENT-3,715,723
Accession Number
73N20176
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-KSC-10521|US-PATENT-3,715,723
Patent Application
US-PATENT-APPL-SN-212921

Related Records

IDRelationTitleN72-21160Superseded By
No Preview Available