Pulse Code Modulation Rate Converter.
ARMY COMMUNICATIONS-ELECTRONICS COMMAND FORT MONMOUTH NJ
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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, andor 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 kbs transmission rate, as compared with previous designs operating at 576 kbs rate. Typical of such multichannel digital communications equipments are the Army Tactical Communications Systems full duplexing transmitting equipment designated as the TD-660 576 kbs group rateand the Air Force designed ANTRC-170 tropo scatter radio terminal 512 kbs group rate. Rather than discard all existing TD-660 units and supplanting them with replacements which operate at the 512 kbs rate, it would be far more desirable to continue to utilize them, and as they already presently exist, but in the newly developing 512 kbs group transmission context.
- Radio Communications
- Non-Radio Communications