H - Electricity – 03 – M
Patent
H - Electricity
03
M
354/68
H03M 7/38 (2006.01) G06T 9/00 (2006.01) H03M 3/04 (2006.01)
Patent
CA 1222571
Abstract of the Disclosure: In an adaptive encoder encoding an encoder input signal into an encoder output signal by carrying out adaptive prediction, an encoder calculation circuit calculates electric power of an encoder electric signal related to the encoder input signal and the encoder output signal. The adaptive prediction is interrupted by an encoder interruption circuit when the electric power is not greater than a reference electric power. The electric signal may be either the encoder input signal or the encoder output signal. Preferably, a local decoded signal is monitored as the encoder electric signal by the encoder calculation circuit. When adaptive quantization is carried out in the encoder, an adaptive step size may be given as the electric signal to the encoder calculation circuit. An adaptive decoder comprises a decoder calculation circuit for calculating electric power of a decoder electric signal related to either a decoder input signal or a decoder output signal in a manner similar to the encoder calculation circuit. A decoder interruption circuit interrupts adaptive opera- tion in the decoder like the encoder interruption circuit.
459935
Corporation Nec
Smart & Biggar
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