Patent ID: 6671292
Filing Date: 2003-12-30
Classification: H04J,H04L

Abstract:
A transmitter for a communication system, comprising:a sampler for sampling analog voice information at a predetermined sampling rate; a digitizer for converting the analog voice information to digital data representative of the analog voice information; an encoder for compressing the digital data according to a selected one of a plurality of unit coding rates, the selected one of the plurality of unit coding rates dynamically changing according to communication system demands, wherein changing from a first unit coding rate to a second, higher, unit coding rate results in a higher than minimal end-to-end delay over the communication link; a ring buffer system for buffering the compressed digital data in the form of data packet payloads of a predetermined size, the ring buffer system comprising a plurality of independent memory sections each sized to store one data packet payload, each respective stored data packet payload being read from the buffer after a unit time delay with respect to when the data packet payload was stored, the unit time delay being adjusted in cooperation with the encoder to reduce the higher than minimal end-to-end delay caused by the change in the selected unit coding rate; and a transmitter section for transmitting the read payloads within packets across a communication link.