Voice storage/retrieval system with memory address generator suc

Details Voice storage/retrieval system with memory address generator suc Voice storage/retrieval system with memory address generator suc

1990-01-12

1991-01-15

Brown, Thomas W.

Telephonic communications

Audio message storage, retrieval, or synthesis

Multilingual system or operation

379 89, H04M 350

Patent

active

049859145

ABSTRACT:
In a voice storage and retrievel system, a controller generates a series of start-point addresses and a series of end-point addresses from a dialled signal sent from a registered subscriber station. The start-point addresses are sequentially stored into a first FIFO and the end-point addresses are successively stored into a second FIFO. The output of the first FIFO is successively supplied as an initial count value to an address generator whose output is connected to a comparator as well as to a voice segment memory, the output of the second FIFO being supplied to the comparator as a reference value. The address generator increments its output beginning with each successive initial value to read voice segments from the voice segment memory for transfer to a line buffer coupled to the subscriber station. When the output of address generator becomes equal to the reference value, the comparator causes the FIFO memories to advance their addresses by one location so that subsequent addresses appear at their respective outputs. An end-of-block detect counter is provided to detect when the line buffer is full to cause it to read the voice segments therefrom for transmission to the subscriber station.

REFERENCES:
patent: 4625081 (1986-11-01), Lotito et al.

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