Patent ID: 9554021
Date: 2017-01-24
CPC Classifications: H04N

Claim:
1. A video signal reception method comprising: receiving an analog video signal through a cable; converting the analog video signal to a digital video signal; separating the digital video signal into the luminance signal and the color difference signal; detecting an equalizing pattern signal indicated in at least one of the luminance signal and the color difference signal of the digital video signal; determining a distortion level of the analog video signal based on the equalizing pattern signal; and compensating for the analog video signal based on the distortion level, wherein the separating comprises: detecting a synchronization (sync) signal of the digital video signal; correcting a direct current (DC) level of the digital video signal based on the sync signal; and separating the corrected digital video signal into the luminance signal and the color difference signal; wherein the compensating for the analog video signal comprises: determining a filter to be applied to the analog video signal based on the distortion level; and compensating for the analog video signal by applying the filter to the analog video signal; and wherein the determining of the distortion level of the analog video signal comprises determining the distortion level by comparing the equalizing pattern signal to preset levels.