Invention Grant
US07646431B2 Auxiliary signal synchronization for closed captioning insertion 有权
辅助信号同步,用于隐藏字幕插入

  • Patent Title: Auxiliary signal synchronization for closed captioning insertion
  • Patent Title (中): 辅助信号同步,用于隐藏字幕插入
  • Application No.: US10512366
    Application Date: 2003-04-21
  • Publication No.: US07646431B2
    Publication Date: 2010-01-12
  • Inventor: Janghwan Lee
  • Applicant: Janghwan Lee
  • Applicant Address: FR Boulogne-Billancourt
  • Assignee: Thomson Licensing
  • Current Assignee: Thomson Licensing
  • Current Assignee Address: FR Boulogne-Billancourt
  • Agent Robert D. Shedd; Joseph J. Opalach; Brian J. Cromarty
  • International Application: PCT/US03/12174 WO 20030421
  • International Announcement: WO03/092274 WO 20031106
  • Main IPC: H04N7/00
  • IPC: H04N7/00 H04N11/00
Auxiliary signal synchronization for closed captioning insertion
Abstract:
A system, apparatus and/or method included in or embodied as a television signal receiver synchronizes auxiliary data with an auxiliary video output signal for appropriately inserting closed captioning into the auxiliary video signal. In one form, the television signal receiver correlates a main video signal with the auxiliary video signal in order to ascertain when and/or where to insert the auxiliary data in to the auxiliary video signal. In an exemplary manner, the field information between a video portion of a main television signal and a video portion of an auxiliary output television signal is tracked for determining field inversion between the two. Through the determination of field inversion between the video portion of the main television signal and the video portion of the auxiliary output television signal, auxiliary data such as closed caption, extended data service and the like, is provided to (inserted in) an auxiliary television signal output in a sequence proper for the sequence of video data being provided thereto. Proper sequencing of the auxiliary data allows the auxiliary data to be provided appropriately with the auxiliary video portion of the television signal to the auxiliary television signal output. Additionally, the system, method and/or apparatus provides a field delay if a deinterlacer is used (i.e. to produce a signal suitable for progressive scan images).
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