公开(公告)号：US20030118129A1

公开(公告)日：2003-06-26

申请号：US10153000

申请日：2002-05-22

Applicant: STMICROELECTRONICS S.A.

Inventor： Marc Joisson ,  Luc Garcia ,  Sebastien Leveque

IPC: H03D003/00 ,  H04L027/14 ,  H04B001/16

CPC classification number: H04L27/1563

Abstract: A receiver of a frequency-modulated signal representing a digital signal includes a down conversion unit or frequency translation unit to lower the frequency of the frequency-modulated signal and a digital demodulator to regenerate the digital signal from the lowered-frequency signal. The receiver furthermore includes a counter circuit to determine the number of periods of a reference signal from the frequency translation unit during a period of the lowered-frequency signal. The digital demodulator includes a computer unit to compute the period of the lowered-frequency signal from the number of periods of the reference signal.

Abstract translation: 表示数字信号的频率调制信号的接收机包括降频变频单元或频率转换单元，以降低频率调制信号的频率，以及数字解调器，以从低频信号再生数字信号。 接收器还包括一个计数器电路，用于在降频信号的周期期间确定来自频率转换单元的参考信号的周期数。 数字解调器包括计算机单元，用于根据参考信号的周期数来计算降频信号的周期。