Patent ID: 11922960
Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. The apparatus of claim 8, wherein the second quantization module comprises:
an inter-frame predictor configured to generate a first prediction vector of a current frame from a quantized input vector of a previous frame;
a second intra-frame predictor configured to generate a second prediction vector of the current frame by estimating a current stage sub-vector of the second prediction vector of the current frame based on a second prediction matrix of a current stage and a previous stage sub-vector of a quantized first error vector of the current frame, wherein the quantized first error vector of the current frame is obtained based on the second prediction vector of the current frame and a quantized second error vector of the current frame; and
a second trellis-structured vector quantizer configured to quantize a second error vector of the current frame which corresponds to a difference between a first error vector of the current frame and the second prediction vector of the current frame to generate the quantized second prediction error vector of a current frame, wherein the first error vector of the current frame corresponds to a difference between the first prediction vector of the current frame and an input vector of a current frame.