US8352253B2

5G,4G,3G,2G

Title

SPEECH CODER AND SPEECH DECODER

Application Number:

US20100783974

Publication Date:

08-01-2013

Current Assignee:

Family ID:

Application Date:

20-05-2010

Publication Country:

US

Priority Date:

22-10-1997

Abstract  Abstract

A vector quantization apparatus performs coding of a linear predictive coding coefficient by multi-stage vector quantization. A first codebook and a second codebook store code vectors and a storing section stores scalars. A first quantizing section extracts a first code vector stored in the first codebook and performs first stage quantization for quantizing a target vector using the first code vector. A second quantizing section extracts a second code vector stored in the second codebook calculates a third code vector by multiplying the second code vector and one of the scalars stored in the storing section performs distance calculation using the target vector the first code vector and the third code vector and performs second stage quantization for quantizing the target vector using a result of the distance calculation. Each scalar stored in the storing section is associated with at least one of the vectors stored in the first codebook.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.