Global Patent Index - EP 0796490 B1

EP 0796490 B1 2000-08-02 - SIGNAL PREDICTION METHOD AND DEVICE FOR A SPEECH CODER

Title (en)

SIGNAL PREDICTION METHOD AND DEVICE FOR A SPEECH CODER

Title (de)

VERFAHREN UND VORRICHTUNG ZUR SIGNALPRÄDIKTION FÜR EINEN SPRACHKODIERER

Title (fr)

METHODE ET DISPOSITIF DE PREDICTION DE SIGNAL POUR UN CODEUR DE PAROLE

Publication

EP 0796490 B1 (FR)

Application

EP 96934902 A

Priority

  • EP 96934902 A
  • EP 96402030 A
  • FR 9601596 W
  • FR 9511937 A

Abstract (en)

[origin: WO9714139A1] A method and a device for predicting periodicity data present in a voice signal to be coded that is subdivided into a series of sub-frames. The prediction is performed using an adaptive dictionary built up from the optimal excitation of each preceding sub-frame. The previous predictions are filtered and correlated to enable selection of the desired predicted signal, which is then compared with the starting information so that only the prediction error is coded and transmitted. The method and device are useful in video telephony.

IPC 1-7 (main, further and additional classification)

G10L 19/08

IPC 8 full level (invention and additional information)

G10L 19/08 (2013.01); H03M 7/30 (2006.01); H04B 14/06 (2006.01)

CPC (invention and additional information)

G10L 19/08 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9714139 A1 19970417; DE 69609592 D1 20000907; DE 69609592 T2 20010329; EP 0796490 A1 19970924; EP 0796490 B1 20000802; JP H11500837 A 19990119

INPADOC legal status


2003-08-15 [REG FR ST] NOTIFICATION OF LAPSE

2003-06-30 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20030630

2003-06-04 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20021011

2002-10-11 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20021011

2002-07-02 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20020702

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-10-31 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20011031

- Year of fee payment: 6

2001-10-26 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20011026

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2001-07-18 [26N] NO OPPOSITION FILED

2000-12-20 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20001220

- Year of fee payment: 5

2000-10-25 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000928

2000-09-07 [REF] CORRESPONDS TO:

- Document: DE 69609592 20000907

2000-08-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB

2000-03-08 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7G 10L 19/08 A

1999-11-03 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19990921

1997-12-17 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19971017

1997-09-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB