Voice transmitting apparatus and voice receiving apparatus using

Details Voice transmitting apparatus and voice receiving apparatus using Voice transmitting apparatus and voice receiving apparatus using

1995-06-16

1998-07-14

Vo, Don N.

Pulse or digital communications

Synchronizers

Synchronization failure prevention

375368, 375370, 370514, H04L 700

Patent

active

057815950

ABSTRACT:
A voice transmitting apparatus and a voice receiving apparatus using voice activation techniques. The voice transmitting apparatus is provided with a UW2 burst generator 8 for generating, in the absence of voice, second unique word pattern (UW2) differing from first unique word pattern (UW) used in the presence of voice. Also, the voice receiving apparatus is provided with a UW2 detection circuit which makes it silent upon the detection of the second unique word pattern (UW2), thus preventing the occurrence of unwanted sounds while positively maintaining the frame timing.

REFERENCES:
patent: 4168469 (1979-09-01), Parikh et al.
patent: 5497404 (1996-03-01), Grover et al.
patent: 5526297 (1996-06-01), Snyder, Jr. et al.
patent: 5537422 (1996-07-01), Shimpuku et al.

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