Global Patent Index - EP 1068737 A1

EP 1068737 A1 2001-01-17 - IMPROVEMENTS RELATING TO AUDIO-VIDEO DELAY

Title (en)

IMPROVEMENTS RELATING TO AUDIO-VIDEO DELAY

Title (de)

VERBESSERUNGEN BEZÜGLICH AUDIO-VIDEO VERZÖGERUNGSZEIT

Title (fr)

AMELIORATIONS EN SYNCHRONISATION AUDIO-VIDEO

Publication

EP 1068737 A1 (EN)

Application

EP 99914665 A

Priority

  • GB 9901041 W
  • GB 9807295 A

Abstract (en)

[origin: WO9952298A1] In digital video synchronisation, the trend in delay is monitored to enable a prediction to be made of the dropping or repeating of a video field. The audio time compression or expansion is then initiated a selected time interval in advance of the field the dropping or repeating. The loss of audio synchronisation can in this way be kept below perceptible thresholds.

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

H04N 7/52

IPC 8 full level (invention and additional information)

H04N 7/52 (2011.01)

CPC (invention and additional information)

H04N 21/4307 (2013.01)

Citation (search report)

See references of WO 9952298A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IE IT LI NL SE

EPO simple patent family

WO 9952298 A1 19991014; AU 3339499 A 19991025; EP 1068737 A1 20010117; GB 9807295 D0 19980603

INPADOC legal status


2002-11-13 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020511

2001-04-04 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010216

2001-01-17 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000921

2001-01-17 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FR GB IE IT LI NL SE