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1.发明授权Frequency demodulator for recovering SECAM chrominance signal and method thereof 有权用于恢复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。
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2.发明申请Frequency demodulator for recovering SECAM chrominance signal and method thereof 有权用于恢复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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3.发明申请公开(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
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。
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4.发明授权Switch control device with zero-cross point estimation by edge detection, power supply device comprising the same, and switch control method with zero-cross point estimation by edge detection 有权通过边缘检测进行零交叉点估算的开关控制装置，包括相同的电源装置，以及通过边缘检测进行零交叉点估计的开关控制方法公开(公告)号：US09000744B2
公开(公告)日：2015-04-07
申请号：US13187741
申请日：2011-07-21
申请人： Young-Je Lee , Jae-yong Lee , Ji-Hoon Jang
发明人： Young-Je Lee , Jae-yong Lee , Ji-Hoon Jang
CPC分类号： H02M7/2176 , H05B33/0818
摘要： Provided are a switch control device, a switch control method, and a power supply device. The present invention generates power voltage required to operate the switch control device by using full-wave current rectification voltage generated by rectifying an AC input and detects a zero cross-point when a full-wave rectification voltage is zero voltage by using the edge of power voltage. The present invention generates a reference signal synchronized to the full-wave rectification voltage by using the detected zero cross-point and controls a switching operation of a power switch by comparing a reference signal with current which flows on the power switch.
摘要翻译： 提供开关控制装置，开关控制方法和电源装置。 本发明通过使用整流AC输入产生的全波整流电压来产生操作开关控制装置所需的电力电压，并且通过使用功率边缘来检测全波整流电压为零电压时的零交叉点 电压。 本发明通过使用检测到的零交叉点产生与全波整流电压同步的参考信号，并通过将参考信号与在电源开关上流动的电流进行比较来控制电源开关的切换操作。
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