Analog television signal processing method and device

Analog television signal processing method and device

The invention discloses an analog television signal processing method and device. The method comprises the following steps: converting the frequency of a received analog television signal into an intermediate frequency to obtain an intermediate frequency analog signal; judging whether the intermedia...

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1. Verfasser: PIAO CHENGZHE
Format: Patent
Sprache:chi ; eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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description The invention discloses an analog television signal processing method and device. The method comprises the following steps: converting the frequency of a received analog television signal into an intermediate frequency to obtain an intermediate frequency analog signal; judging whether the intermediate frequency analog signal has an adjacent channel meeting a preset condition or not; if so, pre-filtering the intermediate frequency analog signal to obtain a pre-filtered signal; performing IQ imbalance estimation on the pre-filtered signal to obtain an estimation result; performing digital phase-locked loop processing on the estimation result to obtain a signal after digital phase locking; performing IQ compensation on the signal after digital phase locking to obtain a compensation signal. According to the method disclosed in the invention, the effect of improving the signal quality of the analog television is achieved. 本发明公开了一种模拟电视信号处理方法和装置。该方法包括：将接收到的模拟电视信号的频率变换到中频，得到中频模拟信号；判断中频模拟信号是否存在满足预设条件的邻频；如果存在，则对中频模拟信号进
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The method comprises the following steps: converting the frequency of a received analog television signal into an intermediate frequency to obtain an intermediate frequency analog signal; judging whether the intermediate frequency analog signal has an adjacent channel meeting a preset condition or not; if so, pre-filtering the intermediate frequency analog signal to obtain a pre-filtered signal; performing IQ imbalance estimation on the pre-filtered signal to obtain an estimation result; performing digital phase-locked loop processing on the estimation result to obtain a signal after digital phase locking; performing IQ compensation on the signal after digital phase locking to obtain a compensation signal. 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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
title Analog television signal processing method and device
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