Teletext decoder, and television receiver, video player and personal computer including the same

摘要

In a teletext decoder, data causing unwanted misregistration and data corresponding to Hamming code error conditions to be deleted are previously specified and stored as comparative data in a comparative data table (43). Teletext data comparing software (42) receives, as an input, teletext data from a teletext signal restoring device (13), and compares the received teletext data with the comparative data of the comparative data table. When the teletext data accords with the comparative data, matching information is transmitted to data storage controlling software (44). When the data storage controlling software receives the matching information, it does not store this according teletext data in a teletext data storage memory (22). Accordingly, in a weak electric field where Hamming code errors frequently occurs, it is possible to suppress misregistration of teletext caused because teletext data different from transmitted data appears as correctable data.