Digital/analog television signal receiver using analog signal channel fine-tuning data for setting digital signal channels

摘要

A digital/analog television signal receiver includes a tuner which receives television signals in an ATSC system and an NTSC system. An analog television signal in the NTSC system is received by an automatic frequency tuning (AFT) at a time of an automatic pre-setting, and a frequency deviation amount for each receivable channel is detected by a CPU. Upon completion of the automatic pre-setting, the CPU calculates an average value of the frequency of deviation amounts of respective channels, and stores the average value in a memory as fine tuning data. Therefore, channel data is set by utilizing the fine tuning data when receiving a digital television signal in the ATSC system.