Nova Patents
AU2002352182A1

Methods for improving high frequency reconstruction

Abstract

The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilising high frequency reconstruction (HFR). It utilises a detection mechanism on the encoder side to assess what parts of the spectrum will not be correctly reproduced by the HFR method in the decoder. Information on this is efficiently coded and sent to the decoder, where it is combined with the output of the HFR input.

Term

Term ended

Projected expiry passed 28 November 2022, 3.8 years ago.

  1. Priority
  2. Filed
  3. Published
  4. Projected expiry
  5. Today

48 members in 13 offices

This recordMember, by publication datePriority claim3 more offices are in the list below

Priority claims8

Priority claims
DocumentOfficeKindDate
0104004SwedenA
0104004SwedenA
0213462European Patent Office (EPO)W
0213462European Patent Office (EPO)W
01040047–––
SE20010004004–––
WO03046891–––
WO2002EP13462–––

Members48

Family members, oldest first
DocumentOfficeKind
WO03046891A1World Intellectual Property Organization (WIPO)A1
AU2002352182A1This recordAustraliaA1
EP1423847A1European Patent Office (EPO)A1
KR20040066114ARepublic of KoreaA
HK1062350A1Hong Kong, ChinaA1
CN1571993AChinaA
EP1423847B1European Patent Office (EPO)B1
AT288617TAustriaT
ATE288617T1AustriaT1
DE60202881D1GermanyD1
JP2005510772AJapanA
US2005096917A1United States of AmericaA1
DK1423847T3DenmarkT3
PT1423847EPortugalE
ES2237706T3SpainT3
DE60202881T2GermanyT2
CN1279512CChinaC
KR100648760B1Republic of KoreaB1
JP3870193B2JapanB2
US7469206B2United States of AmericaB2
US2009132261A1United States of AmericaA1
US2009326929A1United States of AmericaA1
US8019612B2United States of AmericaB2
US2011295608A1United States of AmericaA1
US8112284B2United States of AmericaB2
US8447621B2United States of AmericaB2
US2013226597A1United States of AmericaA1
US2016232912A1United States of AmericaA1
US9431020B2United States of AmericaB2
US2016358616A1United States of AmericaA1
US2017178646A1United States of AmericaA1
US2017178647A1United States of AmericaA1
US2017178654A1United States of AmericaA1
US2017178655A1United States of AmericaA1
US2017178656A1United States of AmericaA1
US2017178657A1United States of AmericaA1
US2017178658A1United States of AmericaA1
US9761234B2United States of AmericaB2
US9761236B2United States of AmericaB2
US9761237B2United States of AmericaB2
US9779746B2United States of AmericaB2
US9792923B2United States of AmericaB2
US9812142B2United States of AmericaB2
US9818417B2United States of AmericaB2
US9818418B2United States of AmericaB2
US10403295B2United States of AmericaB2
US2019385624A1United States of AmericaA1
US11238876B2United States of AmericaB2