Semiconductor integrated device

Details Semiconductor integrated device Semiconductor integrated device

1992-05-19

1994-04-19

Dwyer, James L.

Telephonic communications

Subscriber line or transmission line interface

Network interface device

379411, 379345, 379406, 370 321, H04M 100, H04J 300

Patent

active

053053796

ABSTRACT:
A sending data buffer for holding sending data temporarily and transmitting the data to an echo canceler section is installed between a sending section and an echo canceler section of an echo canceler integrated circuit included in a subscriber line circuit of an integrated service digital network. The sending data buffer is operated in a shift register mode during a sending training mode, and operated in FIFO (first in-first out) mode during a sending/receiving training mode. Also, an adjustment function of the delay amount corresponding to the use setting is added.

REFERENCES:
patent: 4527020 (1985-07-01), Ito
patent: 4760596 (1988-07-01), Agrawal et al.
patent: 5113389 (1992-05-01), Cox

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