Accession Number : ADD010250

Title :   Pulse Code Modulation Rate Converter.

Descriptive Note : Patent Application,


Personal Author(s) : Hanson,Elis D

Report Date : 02 May 1983

Pagination or Media Count : 9

Abstract : This invention relates to multichannel digital communication systems and, more particularly, to a pulse rate converter which permits interfacing of two communications equipments which are designed for operation at different group transmission rates. As is known and understood, advances in technical knowledge often bring about re-designs of existing equipment to result in improved operation, simplicity in construction, and/or reductions in cost -- amongst other advantages. In 12 channel pulse code modulation, time division multiplex communications systems, for example, such technical advances have led to development of equipment which operates at a 512 kb/s transmission rate, as compared with previous designs operating at 576 kb/s rate. Typical of such multichannel digital communications equipments are the Army Tactical Communications Systems full duplexing transmitting equipment designated as the TD-660 (576 kb/s group rate)and the Air Force designed AN/TRC-170 tropo scatter radio terminal (512 kb/s group rate). Rather than discard all existing TD-660 units and supplanting them with replacements which operate at the 512 kb/s rate, it would be far more desirable to continue to utilize them, and as they already presently exist, but in the newly developing 512 kb/s group transmission context.

Descriptors :   *Patent applications, *Pulse code modulation, *Data rate, *Multichannel communications, *Tropospheric scatter communications, Pulse rate, Digital communications, Converters, Communication equipment, Air Force, Transmittance, Rates, Inventions

Subject Categories : Radio Communications
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE