HK1025417A1

5G,4G,3G,2G

Title

Sound encoder and sound decoder

Application Number:

HK20000104635

Publication Date:

10-11-2000

Current Assignee:

Family ID:

Application Date:

26-07-2000

Publication Country:

US

Priority Date:

22-10-1997

Title

Sound encoder and sound decoder

Application Number:

HK20000104635

Family ID:

Publication Country:

US

Publication Date:

10-11-2000

Application Date:

26-07-2000

Priority Date:

22-10-1997

Current Assignee:

Abstract  Abstract

A vector quantizer and corresponding method for coding a linear prediction coefficients vector by muIti-stage vector quantization, the apparatus comprising: a first codebook that stores a plurality of first code vectors; a second codebook that stores a plurality of second code vectors; a storing section that stores a plurality of scalars; a first quantizing section that 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 that 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 calcutation 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, wherein each scalar stored in the storing section is associated with at least one of the first code 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.