DTV lip-sync test using time-indexed audio and video signals without effect on program

Author

Han, Chan-Ho ; Sohng, Kyu-Ik

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Kyungpook Nat. Univ., Daegu, South Korea

Volume

51

Issue

1

fYear

2005

fDate

3/1/2005 12:00:00 AM

Firstpage

62

Lastpage

68

Abstract

A new lip-synchronization (lip-sync) test method using audio and video signals for DTV is presented. The proposed method does not interfere with or have any effect on the program being broadcast, as the time-indexed lip-sync test signals (TILTS) are embedded in a hidden region. The video TILTS is embedded into transient effect areas outside the active pixel region, making it invisible on-screen. Experimental results confirm that the time difference between audio and video signals can be easily measured at any time from the TILTS in the decoder outputs.

Keywords

audio signal processing; digital television; video signal processing; DTV; TATS; TILTS; active pixel region; audio-video signals; time-indexed lip-sync test signals; transient effect areas test signal; Decoding; Delay; Digital TV; Frequency synchronization; Indexing; System testing; TV broadcasting; Test equipment; Time measurement; Video sequences; DTV; TATS (transient effect area test signal); TILTS (time indexed lip-sync test signal); lip-sync;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/TBC.2004.841747

Filename

1406153