Circuit for discriminating between received signals and method therefor
AssigneeSamsung Electronics Co., Ltd.
InventorKi-bum Kim
Life of this patent
Estimating the term…
Abstract
A circuit for discriminating between received signals and a method therefor are provided. The circuit includes a detector for detecting a peak signal based on the degree of correlation between a received signal and a reference signal and a generator for generating a discrimination signal showing that the received signal is a high definition signal if the peak signal is detected in a predetermined period and showing that the received signal is a signal of an analog broadcasting method if the peak signal is not detected in the predetermined period. This can prevent the improper operation of a receiver by automatically determining whether the received signal according to a channel selection is a high definition digital signal or an analog broadcast signal.
Claims14
A circuit for discriminating between received signals, comprising:
- a correlator for obtaining a correlation degree between a received high definition signal and a reference signal and providing a correlation value;
- a peak detector for providing a peak signal when the correlation value is larger than a reference value;
- and
- means for generating a discrimination signal for showing that the received signal is a high definition signal having a predetermined digital signal format if the peak signal is detected in a predetermined period and showing that the received signal is a signal of an analog broadcast format if the peak signal is not detected in the predetermined period.
A method for discriminating whether a received signal is a high definition signal having a digital format or a signal having an analog broadcast format, comprising the steps of:
- (a) providing a correlation value by obtaining a correlation degree between the received signal and a reference signal;
- (b) providing a detection signal when the correlation value is larger than a reference value;
- and
- (c) generating a discrimination signal showing that the received signal is the high definition signal if the detection signal is generated in a predetermined period and showing that the received signal is the signal of the analog broadcast format if the detection signal is not generated in the predetermined period.
Dependencies are inferred from the claim text.