The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 2010
Filed:
Nov. 30, 2006
Won Wook SO, Kyungki-Do, KR;
Hak Sun Kim, Daejeon, KR;
Boo Dong Kwak, Kyungki-Do, KR;
Won Tae Choi, Kyungki-Do, KR;
Joo Yul Ko, Kyungki-Do, KR;
Won Wook So, Kyungki-Do, KR;
Hak Sun Kim, Daejeon, KR;
Boo Dong Kwak, Kyungki-Do, KR;
Won Tae Choi, Kyungki-Do, KR;
Joo Yul Ko, Kyungki-Do, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, Kyungki-Do, KR;
Abstract
A telephone signal cancellation circuit, a digital broadcasting reception circuit and a portable digital broadcasting reception apparatus is provided. The telephone signal cancellation circuit, includes a signal coupler for separating a part of a reception signal, a telephone signal selection filter for passing a telephone signal among signals from the signal coupler, a phase shifter for performing phase inversion on the telephone signal among the signals from the telephone signal selection filter, and a combiner for combining the signal from the phase shifter and the reception signal, and canceling the telephone signal included in the reception signal.