Voice messaging system having user-selectable data compression m

Details Voice messaging system having user-selectable data compression m Voice messaging system having user-selectable data compression m

1996-03-25

1999-03-09

Chin, Stephen

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

375240, 375219, 379 671, 379 68, 379 69, 379 8808, 379 881, 379 8812, H04B 166, H04B 138, H04L 516, H04M 164

Patent

active

058811044

ABSTRACT:
There is provided a portable packet switched wireless voice messaging device capable of transmitting and receiving a digital voice signal. The device includes a microphone for inputting a voice message, an encoder for encoding the voice message, a memory for storing the encoded message, a data compressor with variable compression ratio for compressing the encoded message in accordance with a data compression mode selected by the user and a transmitting circuit for transmitting the compressed data with information indicating the mode selected. The device also includes a receiving circuit for receiving an incoming message data which has been compressed in a transmitting side, a detector for detecting the compression mode used in the transmitting side, a data decompressor for decompressing the incoming message data in accordance with the detected mode, a memory for storing the decompressed data, a decoder for decoding the decompressed data and a speaker for reproducing a voice message in accordance with the decoded voice message signal provided by the decoder. The user can select a data compression mode depending upon the importance of his voice message to be transmitted.

REFERENCES:
patent: 5105197 (1992-04-01), Clagett
patent: 5455823 (1995-10-01), Noreen et al.
patent: 5546395 (1996-08-01), Sharma et al.
patent: 5630012 (1997-05-01), Nishiguchi et al.
patent: 5706211 (1998-01-01), Beletic et al.

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