Automatic broadcasting channel selection method and television receiver adopting the same

Claim 1

A television receiver for automatically selecting broadcast channels within all television broadcast bands, on the basis of television signals to be transmitted with broadcasting station identification codes, at an area where a plurality of broadcast channels corresponding to an identical broadcasting station are received, the television receiver comprising; a memory; tuning means for performing a tuning operation according to applied respective channel data, and outputting a television signal of an individual broadcast channel which is received by the tuning operation; demodulation means for demodulating the television signal supplied from said tuning means, outputting a video signal as a result of demodulation, and generating an automatic gain control value for said supplied television signal; detection means, receiving the video signal from said demodulation means, for detecting the broadcasting station identification codes in the video signal; and control means, sequentially supplying each of a plurality of channel data, which partition all television broadcast bands into a predetermined interval, to said tuning means, and receiving said automatic gain control value and said broadcasting station identification codes, for controlling storage of the plurality of channel data, the broadcasting station identification codes and the automatic gain control value which respectively correspond to each of broadcast channels to receive the television signal output from said tuning means, in said memory, and for determining channel data having the lowest automatic gain control value among a plurality of channel data corresponding to identical broadcasting station identification codes stored in said memory, as the optimum channel data for a corresponding broadcasting station.

Claim 5

A method for automatically selecting broadcast channels within all television broadcast bands, on the basis of television signals to be transmitted with broadcasting station identification codes, at an area where numbers of broadcast channels corresponding to an identical broadcasting station are received, the method comprising the steps of: (a) performing a tuning operation sequentially using each of a plurality of channel data which partition all television broadcast bands into a predetermined interval, and outputting a television signal of an individual broadcast channel which is received by the tuning operation; (b) generating channel data, said broadcasting station identification codes and an automatic gain control value corresponding to the television signal of the individual broadcast channel output in said step (a); (c) correspondingly storing the channel data, the broadcasting station identification codes and the automatic gain control value generated in said step (b), with regard to all broadcast channels in which the television signal is received; (d) determining the lowest automatic gain control value among a plurality of automatic gain control values having identical broadcasting station identification codes, with respect to each of a plurality of broadcasting station identification codes stored in said step (c); and (e) determining channel data corresponding to the lowest automatic gain control value determined in said step (d), as optimum channel data for the corresponding broadcasting station.

Claim 6

A method for automatically selecting broadcast channels within all television broadcast bands, on the basis of television signals to be transmitted with broadcasting station identification codes, at an area where numbers of broadcast channels corresponding to an identical broadcasting station are received, the method comprising the steps of: (a) performing a tuning operation sequentially using each of a plurality of channel data which partition all television broadcast bands into a predetermined interval, and outputting a television signal of an individual broadcast channel which is received by the tuning operation; (b) generating channel data, said broadcasting station identification codes and an automatic gain control value corresponding to the television signal of the individual broadcast channel output in said step (a); (c) correspondingly storing the channel data, the broadcasting station identification codes and the automatic gain control value generated in said step (b), with regard to all broadcast channels in which the television signal is received; (d) determining the lowest automatic gain control value among a plurality of automatic gain control values having identical broadcasting station identification codes, with respect to each of a plurality of broadcasting station identification codes stored in said step (c); and (e) determining channel data corresponding to the lowest automatic gain control value determined in said step (d), as optimum channel data for the corresponding broadcasting station.