Interface circuit between a plurality of transmission lines and

Details Interface circuit between a plurality of transmission lines and Interface circuit between a plurality of transmission lines and

1991-11-26

1993-12-07

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

375121, H04L 700

Patent

active

052689328

ABSTRACT:
A transmission line interface circuit is provided which receives a plurality of channels of data and a plurality of receiving clock signals respectively synchronized with the plurality of channels of data received from the respective transmission lines, and allows outputs of the plurality of channels of data synchronized with a master clock signal which is supplied from outside of the transmission line interface circuit. In addition, the interface circuit receives a plurality of channels of data synchronized with the master clock signal, and outputs a plurality of transmitting clock signals and the plurality of channels of data respectively synchronized with the plurality of transmitting clock signals. The interface circuit includes a plurality of first synchronization timing changing circuits for receiving the plurality of channels of data synchronized with the respective receiving clock signals, and making each bit of the respective channels of data synchronized with one of the receiving clock signals; and a plurality of second synchronization timing changing circuits for receiving the plurality of channels of data synchronized with the above one of the plurality of receiving clock signals, and synchronizing each bit of the plurality of channels of data with the corresponding receiving clock signals, respectively.

REFERENCES:
patent: 3551813 (1990-12-01), Kaneko
patent: 4133981 (1979-01-01), Kibler
patent: 4943942 (1990-07-01), Dunnion
patent: 5040189 (1991-08-01), Braun
patent: 5148430 (1992-09-01), Kuranaga et al.
Patent Abstract of Japan, vol. 11, No. 280 (E-539) Sep. 10, 1987 and JP-A-62 081 142 (NEC Corp) Apr. 14, 1987.
Patent Abstract of Japan, vol. 10, No. 337 (E-454) (2393) Nov. 14, 1986 and JP-1-61 140 239 (Fujitsu Ltd) Jun. 27, 1986.
Patent Abstract of Japan, vol. 10, No. 386 (E-467) (2443) Dec. 24, 1986, and JP-A-61 177 834 (Hitachi Ltd) Aug. 9, 1986.

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