Title: NTSC interference detectors using comb filters that suppress DTV pilot carrier to extract NTSC artifacts
Application Number: 98119617 Application Date: 1998.09.18
Publication Number: 1212581 Publication Date: 1999.03.31
Approval Pub. Date: 2003.11.19 Granted Pub. Date: 2003.11.19
International Classifi-cation: H04N9/78
Applicant(s) Name: Samsung Electronics Co., Ltd. Address:
Inventor(s) Name: Allen Leroy Limberg
Attorney & Agent: ma ying
Abstract:
    A co-channel interference detector of digital TV receiver includes a 1st comb filler generated of the 1st filter in which the artifact signal is suppressed; a 2nd comb filler generated of the 2nd filter in which the artifact signal is intensified; the DC item of the 1st filter response is similar to the 2nd response; the 1st and the 2nd amplitude detector detect separately filter response, the amplitude comparator compare amplitude detecting response, and only when the amplitude detecting response difference exceed a regulated value, it is indicated that the co-channel interference intensity is too large to be used.
Time: 7