US 6,285,818 B1 · Commercial detection which detects a scene change in a video signal and the time interval of scene change points

Abstract

A commercial detector includes a soundless section detecting circuit which detects a soundless section of an audio signal SA and a scene change detecting circuit which detects a scene change point of an image from a video signal SV during the soundless section detected by the soundless section detecting circuit. A commercial section detecting circuit detects whether a time interval of the scene change points detected by the scene change detecting circuit agrees with a predetermined rule. A tuner detects a sound multiplexing mode SSA of an audio signal received.

Claims8

Dependent claims

A commercial detection apparatus for detecting whether a reception content of a television broadcast signal consisting of a video signal and an audio signal is a commercial, said apparatus comprising:

soundless section detecting means for detecting a soundless section in said audio signal;
scene change detecting means for detecting a scene change point of an image from a video signal during said soundless section detected by said soundless section detecting means;
scene change interval detecting means for detecting whether a time interval of the scene change points detected by said scene change detecting means agrees with a predetermined rule;
and
sound multiplexing mode detecting means for detecting a sound multiplexing mode of said received audio signal.

2 more elements

Dependencies are inferred from the claim text.

Commercial detection which detects a scene change in a video signal and the time interval of scene change points

Life of this patent

Commercial detection which detects a scene change in a video signal and the time interval of scene change points

Life of this patent

Abstract

Claims8