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1. 发明申请

US20080049140A1 Apparatus for recovering SECAM chrominance signal and method thereof 审中-公开
标题翻译：用于恢复SECAM色度信号的装置及其方法
公开(公告)号：US20080049140A1
公开(公告)日：2008-02-28
申请号：US11889929
申请日：2007-08-17
申请人： Hyo-Ju Kim , Seong-Wen Lee , Do-Gyun Kim , Yun-Sung Wang , Ji-Hoon Jang
发明人： Hyo-Ju Kim , Seong-Wen Lee , Do-Gyun Kim , Yun-Sung Wang , Ji-Hoon Jang
IPC分类号： H04N3/27
CPC分类号： H04N9/78 , H04N9/455
摘要： An apparatus for recovering a chrominance signal from a sequential color with memory (SECAM) composite video baseband signal (CVBS), and more particularly, an apparatus and method of recovering a SECAM chrominance signal to simplify a circuit configuration of a frequency demodulator since a phase different calculation scheme is simplified is provided. The apparatus for recovering a chrominance signal from a CVBS includes: a frequency demodulator calculating a phase difference between neighboring samples by using an arctangent approximation from an input signal; and a direct current (DC) compensation unit eliminating a DC offset from the calculated phase difference, wherein the phase difference corresponds to the chrominance signal.
摘要翻译：一种用于从具有存储器（SECAM）复合视频基带信号（CVBS）的顺序色彩恢复色度信号的装置，更具体地说，一种恢复SECAM色度信号以简化频率解调器的电路配置的装置和方法，提供了不同的计算方案。用于从CVBS恢复色度信号的装置包括：频率解调器，通过使用来自输入信号的反正切近似来计算相邻采样之间的相位差; 和直流（DC）补偿单元，消除所计算的相位差的DC偏移，其中相位差对应于色度信号。

2. 发明授权

US08107013B2 Frequency demodulator for recovering SECAM chrominance signal and method thereof 有权
标题翻译：用于恢复SECAM色度信号的频率解调器及其方法
公开(公告)号：US08107013B2
公开(公告)日：2012-01-31
申请号：US11889647
申请日：2007-08-15
申请人： Hyo-Ju Kim , Seong-Won Lee , Do-Gyun Kim , Yun-Sung Wang , Ji-Hoon Jang
发明人： Hyo-Ju Kim , Seong-Won Lee , Do-Gyun Kim , Yun-Sung Wang , Ji-Hoon Jang
IPC分类号： H04N9/66
CPC分类号： H04N11/186
摘要： An apparatus for recovering a chrominance signal from a sequential color with memory (SECAM) composite video baseband signal (CVBS), and more particularly, to a frequency demodulator and method of recovering a SECAM chrominance signal which can utilize both a real number portion and an imaginary number portion, and generate a frequency-demodulated chrominance signal using an arctangent approximation, and thereby can simplify a circuit configuration of a frequency demodulator to perform a fixed-point calculation is provided. A frequency demodulator for recovering a chrominance signal, the frequency demodulator comprises a phase differentiator generating a phase difference component between neighboring samples from an input signal and a phase estimator calculating a phase difference between the neighboring samples by using an arctangent approximation, based on the generated phase difference component, wherein the frequency demodulator generates a frequency-demodulated chrominance signal and the phase difference corresponds to the chrominance signal.
摘要翻译：一种用于利用存储器（SECAM）复合视频基带信号（CVBS）从顺序色彩恢复色度信号的装置，更具体地说，涉及一种频率解调器和恢复SECAM色度信号的方法，该SECAM色度信号可以利用实数部分和虚数部分，并且使用反正切近似生成频率解调色度信号，从而可以简化频率解调器的电路配置以进行定点计算。一种用于恢复色度信号的频率解调器，所述频率解调器包括相位微分器，所述相位微分器基于输入信号产生相邻采样之间的相位差分量;以及相位估计器，基于所生成的相位估计器，所述相位估计器通过使用反正切近似来计算相邻采样之间的相位差相位差分量，其中频率解调器产生频率解调色度信号，相位差对应于色度信号。

3. 发明申请

US20080049144A1 Frequency demodulator for recovering SECAM chrominance signal and method thereof 有权
标题翻译：用于恢复SECAM色度信号的频率解调器及其方法
公开(公告)号：US20080049144A1
公开(公告)日：2008-02-28
申请号：US11889647
申请日：2007-08-15
申请人： Hyo-Ju Kim , Seong-Won Lee , Do-Gyun Kim , Yun-Sung Wang , Ji-Hoon Jang
发明人： Hyo-Ju Kim , Seong-Won Lee , Do-Gyun Kim , Yun-Sung Wang , Ji-Hoon Jang
IPC分类号： H04N9/66
CPC分类号： H04N11/186
摘要： An apparatus for recovering a chrominance signal from a sequential color with memory (SECAM) composite video baseband signal (CVBS), and more particularly, to a frequency demodulator and method of recovering a SECAM chrominance signal which can utilize both a real number portion and an imaginary number portion, and generate a frequency-demodulated chrominance signal using an arctangent approximation, and thereby can simplify a circuit configuration of a frequency demodulator to perform a fixed-point calculation is provided. A frequency demodulator for recovering a chrominance signal, the frequency demodulator comprises a phase differentiator generating a phase difference component between neighboring samples from an input signal and a phase estimator calculating a phase difference between the neighboring samples by using an arctangent approximation, based on the generated phase difference component, wherein the frequency demodulator generates a frequency-demodulated chrominance signal and the phase difference corresponds to the chrominance signal.
摘要翻译：一种用于利用存储器（SECAM）复合视频基带信号（CVBS）从顺序色彩恢复色度信号的装置，更具体地说，涉及一种频率解调器和恢复SECAM色度信号的方法，该SECAM色度信号可以利用实数部分和虚数部分，并且使用反正切近似生成频率解调色度信号，从而可以简化频率解调器的电路配置以进行定点计算。一种用于恢复色度信号的频率解调器，所述频率解调器包括相位微分器，所述相位微分器基于输入信号产生相邻采样之间的相位差分量;以及相位估计器，基于所生成的相位估计器，所述相位估计器通过使用反正切近似来计算相邻采样之间的相位差相位差分量，其中频率解调器产生频率解调色度信号，相位差对应于色度信号。

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