Frequency converter

Details Frequency converter Frequency converter

1985-04-29

1989-12-05

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

375112, H04J 306

Patent

active

048857467

ABSTRACT:
A stuff (or dummy) pulse and a stuff designation pulse which indicates existence of nonexistence of the dummy pulse are inserted in a multiplexed pulse code modulation signal to convert an input signal frequency to a higher frequency. The frame synchronization pulse is used as the stuff designation pulse. Therefore, stuff designation is possible even when the frequency difference between the input signal frequency and output signal frequency is small.

REFERENCES:
patent: 3136861 (1964-06-01), Mayo
patent: 3652802 (1972-03-01), Schellenberg
patent: 3825899 (1974-07-01), Haeberle et al.
patent: 3946161 (1976-03-01), Husted et al.
patent: 4002844 (1977-01-01), Doussoux
patent: 4010325 (1977-03-01), Kline
patent: 4596026 (1986-06-01), Cease et al.
patent: 4667324 (1987-05-01), Graves
Kuroyanagi et al., "On Multiplexing Systems for PCM Hierarchical Networks", Electronics and Communications in Japan, vol. 52-A, No. 6, 1969, pp. 16-17, Para. 3, 1, 3, 2.
Sakashita et al., "A 120-Channel PCM System on Symmetrical Pairs", Japan Telecommunications Review, No. 3, 1969, pp. 143-155.
"Digital Multiplex Equipment for the LD-4 System", IEEE 1974 Proceedings of the Int'l Conf. on Communication, Minneapolis, Jun. 17-19, 1974, pp. 8E-1-8E-5; W. R. Reader.
European Search Report, EP 84 11 2651, by Ex. Van Den Berg, J.G.J. at The Hague, on Oct. 5, 1987.

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