Patent ID: 7299183
Filing Date: 2007-11-20
Classification: G10L,H04N

Abstract:
1. A closed caption signal receiving apparatus to receive a television signal including a speech signal and a closed caption signal, the apparatus comprising: a television receiver unit configured to receive a television signal including a speech signal and a closed caption signal; a speech recognition unit configured to subject speech information to speech recognition to derive speech contents including notation data, pronunciation data and various morpheme information, the speech recognition unit including a pronunciation information estimation module to estimate the pronunciation information, and estimating the speech contents with linguistic meaning based on the pronunciation information; a speech timing detecting unit configured to detect a speech timing of the speech contents; a closed caption contents acquisition unit configured to acquire closed caption contents from the closed caption signal associated with the speech signal; a presentation timing detecting unit configured to detect a presentation timing of the closed caption contents; an agreement detecting unit configured to detect an agreement between the speech contents and the closed caption contents; and a time difference calculating unit configured to calculate a time difference between the speech timing and the presentation timing that are detected on the speech contents and the closed caption contents that agree with each other, respectively.