公开(公告)号：US20140253812A1

公开(公告)日：2014-09-11

申请号：US14281016

申请日：2014-05-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sang Ho KIM ,  Ho Jin PARK ,  Hyung Woan KOO ,  Ki Ho LEE

IPC: H04N21/426 ,  H04N5/50 ,  H04N21/439 ,  H04N5/14 ,  H04N5/455 ,  H04N5/60

CPC classification number: H04N21/42607 ,  H04N5/14 ,  H04N5/455 ,  H04N5/46 ,  H04N5/50 ,  H04N5/60 ,  H04N21/42638 ,  H04N21/42676 ,  H04N21/439

Abstract: Provided is an analog front end of a digital TV, a digital TV system having the same, and a method of operating the same. The analog front end includes: a first selection circuit which selectively outputs differential sound intermediate frequency signals or differential TV broadcast signals in response to a first selection signal; a second selection circuit which outputs a clock signal among a plurality of clock signals having a different sampling frequencies, in response to a second selection signal; and an analog-to-digital converter which converts output signals output from the first selection circuit to a digital code, according to a sampling frequency of a clock signal output from the second selection circuit.

Abstract translation: 提供了数字电视的模拟前端，具有该数字电视的数字电视系统及其操作方法。 模拟前端包括：第一选择电路，其响应于第一选择信号选择性地输出差分声音中频信号或差分TV广播信号; 第二选择电路，响应于第二选择信号，在具有不同采样频率的多个时钟信号中输出时钟信号; 以及根据从第二选择电路输出的时钟信号的采样频率，将从第一选择电路输出的输出信号转换为数字码的模数转换器。