Television multiplex data extracting apparatus

摘要

A television multiplex data extracting apparatus (10) can fetch multiplex data of a television broadcast signal (Vo) where the horizontal section for multiplexing the data is not fixed. A register (3) receives information (P) from a controller (20) to generate information for designating the horizontal section for fetching multiplex data, sampling frequency information of the data to be multiplexed and information for designating fetch of data. A sampling apparatus (4) has the first and second fetch modes and detects any one mode of the first and second modes depending on the information from the register (3). The first mode is the extracting mode corresponding to the case where the horizontal section for multiplexing data is fixed. The second mode is designated to discriminate existence of the multiplex data in the designated horizontal section and fetch the data depending on the discrimination result. <IMAGE>