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21. 发明授权

US07034894B1 Digital-to-analog conversion multiple-format video encoder 失效
标题翻译：数模转换多格式视频编码器
公开(公告)号：US07034894B1
公开(公告)日：2006-04-25
申请号：US09247549
申请日：1999-02-10
申请人： Yasunori Kawamura
发明人： Yasunori Kawamura
IPC分类号： H04N3/27 , H04N5/46 , H04N9/64 , H04N9/65 , H04N9/67
CPC分类号： H04N11/143 , H04N9/642 , H04N9/65 , H04N11/162
摘要： A multiple-format video encoder stores values of the sine and cosine functions in a ROM. According to the externally specified video format, an address calculating circuit calculates the addresses at which to access the ROM. In the multiple-format video encoder, a luminance/color-difference signal generating circuit generates color-difference signals B-Y and R-Y from digital RGB signals. A first multiplying circuit multiplies the color-difference signal B-Y by the values of the sine function stored in the ROM at the addresses specified by the address calculating circuit and multiplies the color-difference signal R-Y by the values of the cosine function stored at the same addresses.
摘要翻译：多格式视频编码器将正弦和余弦函数的值存储在ROM中。根据外部指定的视频格式，地址计算电路计算访问ROM的地址。在多格式视频编码器中，亮度/色差信号发生电路从数字RGB信号产生色差信号B-Y和R-Y。第一乘法电路将色差信号BY乘以由地址计算电路指定的地址存储在ROM中的正弦函数的值，并将色差信号RY乘以存储在相同的余弦函数的值地址

22. 发明授权

US06525781B1 SECAM video standard chroma modulation circuit 有权
标题翻译： SECAM视频标准色度调制电路
公开(公告)号：US06525781B1
公开(公告)日：2003-02-25
申请号：US09523489
申请日：2000-03-10
申请人： Peter W. Runstadler
发明人： Peter W. Runstadler
IPC分类号： H04N965
CPC分类号： H04N9/65 , H04N11/183
摘要： An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to present a first signal and a second signal in response to (i) a select signal, (ii) a first difference signal and (iii) a second difference signal. The second circuit may be configured to present a modulated output signal in response to the first signal, the second signal and a control signal. The first circuit may alternately operate on one of either (i) the first difference signal or (ii) the second difference signal. In one example, the present invention may be implemented as a SECAM video encoder.
摘要翻译：一种包括第一电路和第二电路的装置。第一电路可以被配置为响应于（i）选择信号，（ii）第一差分信号和（iii）第二差分信号来呈现第一信号和第二信号。第二电路可以被配置为响应于第一信号，第二信号和控制信号呈现调制的输出信号。第一电路可以交替地操作（i）第一差分信号或（ii）第二差分信号中的一个。在一个示例中，本发明可以被实现为SECAM视频编码器。

23. 发明授权

US6052156A Digital color encoder having sampling frequency converter 失效
标题翻译：具有采样频率转换器的数字彩色编码器
公开(公告)号：US6052156A
公开(公告)日：2000-04-18
申请号：US807239
申请日：1997-02-28
申请人： Takuo Mukai , Kentarou Hara , Masaharu Adachi
发明人： Takuo Mukai , Kentarou Hara , Masaharu Adachi
IPC分类号： H04N9/65 , H04N11/04
CPC分类号： H04N9/65 , H04N11/042
摘要： A digital color encoder capable of reducing the aperture distortion of D/A conversion and the waveform distortion of the video signal without resulting in the increase of the consumed electric current. At first, digital signals sampled with a sampling frequency are inputted as original color signals. The digital composite color video signals of the sampling frequency fl are created from those signals by digital signal processing with the combination of matrix circuit, color burst controlling circuit, modulation circuit, addition circuit, and synchronization signal adding circuit, etc. Next, the sampling frequency of the composite color video signal is converted by a sampling frequency converting circuit inserted immediately before the D/A converter. The converted signal is further converted to an analog signal capable of being inputted into the TV set by a D/A converter, and the signal is outputted as a video signal.
摘要翻译：能够减少D / A转换的孔径失真和视频信号的波形失真的数字彩色编码器，而不会导致消耗电流的增加。首先，以采样频率采样的数字信号作为原色信号输入。采用矩阵电路，色同步信号控制电路，调制电路，加法电路和同步信号相加电路的组合，通过数字信号处理从这些信号中产生采样频率f1的数字复合彩色视频信号。接下来，采样复合彩色视频信号的频率由在D / A转换器之前插入的采样频率转换电路转换。转换后的信号进一步转换为能够通过D / A转换器输入到电视机中的模拟信号，并将该信号作为视频信号输出。

24. 发明授权

US5870152A Carrier chrominance signal forming device 失效
标题翻译：载体色度信号形成装置
公开(公告)号：US5870152A
公开(公告)日：1999-02-09
申请号：US883279
申请日：1997-06-26
申请人： Tsutomu Fukatsu
发明人： Tsutomu Fukatsu
IPC分类号： H04N9/65 , H04N11/14
CPC分类号： H04N9/65 , H04N11/146
摘要： A carrier chrominance signal forming device is provided with input parts for receiving a plurality of kinds of complementary color signals and a carrier chrominance signal forming part for forming a carrier chrominance signal by performing computing operations on the complementary color signals received by the input parts. These parts are arranged to enable the device to stably form a carrier chrominance signal from the complementary color signals with a compact circuit arrangement.
摘要翻译：载波色度信号形成装置具有用于接收多种互补色信号的输入部分和用于通过对由输入部分接收的互补色信号执行计算操作来形成载波色度信号的载波色度信号形成部分。这些部件被布置成使得器件能够利用紧凑的电路布置从互补色信号稳定地形成载波色度信号。

25. 发明授权

US5486875A Image signal processing device 失效
标题翻译：图像信号处理装置
公开(公告)号：US5486875A
公开(公告)日：1996-01-23
申请号：US904188
申请日：1992-06-25
申请人： Katsuhito Sakurai
发明人： Katsuhito Sakurai
IPC分类号： H04N9/64 , H04N9/65
CPC分类号： H04N9/65
摘要： An image signal processing device according to the present invention is a device for processing an image signal. The device is provided with a first differential amplifier for receiving a color-difference signal and a reference signal, a second differential amplifier for receiving a burst flag signal and the reference signal, and a modulator for receiving together signals outputted from the first and second differential amplifiers and modulating the received signals by using a carrier signal. Accordingly, it is possible to add the burst flag signal to the color-difference signal and modulate the obtained sum signal by means of a simple arrangement and without the need for complicated adjustment.
摘要翻译：根据本发明的图像信号处理装置是用于处理图像信号的装置。该装置设置有用于接收色差信号和参考信号的第一差分放大器，用于接收脉冲串标志信号和参考信号的第二差分放大器，以及用于接收从第一和第二差分放大器，并通过使用载波信号调制接收的信号。因此，可以将色同步信号添加到色差信号，并且通过简单的布置对所获得的和信号进行调制，而不需要进行复杂的调整。

26. 发明授权

US4982179A Composite video signal generation method and device 失效
标题翻译：复合视频信号生成方法及装置
公开(公告)号：US4982179A
公开(公告)日：1991-01-01
申请号：US369075
申请日：1989-06-20
申请人： Kiyotaka Ogawa , Shozo Kobatake , Kiyoshi Kohiyama , Yukio Otobe
发明人： Kiyotaka Ogawa , Shozo Kobatake , Kiyoshi Kohiyama , Yukio Otobe
IPC分类号： H04N11/04 , H04N9/45 , H04N9/65 , H04N11/14 , H04N11/20
CPC分类号： H04N11/143 , H04N9/65
摘要： A composite video signal generation method and device comprises circuits for processing a digital signal, by which the circuits can be integrated. The method comprises the steps of calculating a digital luminance signal and two digital chrominance signals combined from digital primary color component signals, balance-modulating a subcarrier by the two digital chrominance signals, and combining the balance-modulated signals and the luminance signal. In the balance-modulation step, a series of phase information values by adding one by one a value of a sampling period of the digital primary color component signal per a subcarrier period is obtained, cosine function values and sine function values are operated in response to the phase information values, and the cosine function values and the sine function values are multiplied by the two digital chrominance signals, respectively. Accordingly, phase information values of the device can be varied, and if the sampling period of the system changes, the digital primary color component signals can be converted to the NTSC signal.
摘要翻译：复合视频信号产生方法和装置包括用于处理数字信号的电路，通过该电路可以集成电路。该方法包括以下步骤：计算数字亮度信号和从数字原色分量信号组合的两个数字色度信号，通过两个数字色度信号对子载波进行平衡调制，以及组合平衡调制信号和亮度信号。在平衡调制步骤中，通过逐个加载每个副载波周期的数字原色分量信号的采样周期的值，一系列相位信息值，余弦函数值和正弦函数值响应于相位信息值和余弦函数值和正弦函数值分别乘以两个数字色度信号。因此，可以改变装置的相位信息值，并且如果系统的采样周期改变，则可以将数字原色分量信号转换成NTSC信号。

27. 发明授权

US3721755A Color television encoder modulator 失效
标题翻译：彩色电视编码器调制器
公开(公告)号：US3721755A
公开(公告)日：1973-03-20
申请号：US3721755D
申请日：1971-03-29
申请人： TELEMATION
发明人： CRAIG P
IPC分类号： H03C1/54 , H04N9/65 , H04N5/40 , H03C1/52
CPC分类号： H03C1/542 , H04N9/65
摘要： A balanced modulator circuit for use in television cameras to impress color information on the chrominance subcarrier wherein the video input is phase-split and the resulting signals are fed through respective bootstrap emitter-followers, the outputs of these emitter-followers are chopped by respective field effect transistors gated by respective 3.58MHz clock signals which are 180* out of phase and a third field effect transistor, operated in a saturation mode wherein 10 ma. forward current is drawn, is connected across the outputs of the emitter-followers and gated by clamp source pulses to clamp the emitter-follower outputs at zero reference.
摘要翻译：一种用于电视摄像机的平衡调制器电路，用于在彩色副载波上印刷彩色信息，其中视频输入是相位分割的，并且所得到的信号通过相应的自举发射极跟随器馈送，这些发射极跟随器的输出被相应的场切断效应晶体管由相位为180°的相应的3.58MHz时钟信号和第三场效应晶体管门控，在饱和模式下工作，其中10mA。正向电流被绘制，连接在发射极跟随器的输出端上，并通过钳位源脉冲进行选通，以将发射极跟随器输出钳位在零参考值。

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