Global Patent Index - EP 1068722 A1

EP 1068722 A1 2001-01-17 - VIDEO SIGNAL PROCESSING

Title (en)

VIDEO SIGNAL PROCESSING

Title (de)

VIDEOSIGNALVERARBEITUNG

Title (fr)

TRAITEMENT DE SIGNAUX VIDEO

Publication

EP 1068722 A1 (EN)

Application

EP 99914667 A

Priority

  • GB 9901043 W
  • GB 9807296 A

Abstract (en)

[origin: WO9952275A1] In a system for detecting scratches in video material originating from film material (,) values of amplitude derivatives are measured to provide local and background activity levels, and the difference between these values is formed. If the magnitude of the difference is positive and smaller than a given value (,) the value of the difference is accumulated vertically. The accumulated value is compared with a threshold to detect a scratch. Accumulation also takes place over fields. The polarity of the local activity level is carried forward to identify a detected scratch as dark or light for use in subsequent concealment processes.

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

H04N 5/217; H04N 5/213

IPC 8 full level (invention and additional information)

H04N 5/213 (2006.01); H04N 5/217 (2011.01)

CPC (invention and additional information)

H04N 5/213 (2013.01); H04N 5/217 (2013.01)

Citation (search report)

See references of WO 9952275A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 9952275 A1 19991014; AU 3339699 A 19991025; EP 1068722 A1 20010117; GB 9807296 D0 19980603

INPADOC legal status


2002-09-04 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020222

2001-11-28 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20011011

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

- Ref Legal Event Code: 17P

- Effective date: 20000927

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