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:
Aug. 07, 2012
Filed:
Dec. 23, 2009
Sang-yeon Moon, Suwon-si, KR;
Geun-sik Yun, Yongin-si, KR;
Dong-uk Seo, Cheonan-si, KR;
Sung-soo Lee, Suwon-si, KR;
Hyun-jun Kim, Seoul, KR;
Sang-Yeon Moon, Suwon-si, KR;
Geun-Sik Yun, Yongin-si, KR;
Dong-Uk Seo, Cheonan-si, KR;
Sung-Soo Lee, Suwon-si, KR;
Hyun-Jun Kim, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An apparatus and a method for performing an attenuation function on a signal using an attenuator in a cable broadcast receiver having a Low Noise Amplifier (LNA) that does not perform an attenuation function on a signal are provided. In the method, an input Radio Frequency (RF) signal is tuned, The RF signal is converted into an Intermediate Frequency (IF) signal. An intensity of the converted IF signal is compared to a threshold, and an RF Automatic Gain Control (AGC) value is generated based on a result of the comparison. When the generated RF AGC value is smaller than an RF AGC threshold, the attenuator is turned on to attenuate the input RF signal by a predefined amount. Therefore, a high SNR, such as in an analog-digital composite signal, may be obtained without using an LNA that performs an attenuation function on a signal.