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81. 发明授权

US6034796A Data processor 失效
标题翻译：数据处理器
公开(公告)号：US6034796A
公开(公告)日：2000-03-07
申请号：US912573
申请日：1997-08-18
申请人： Hiroyuki Suzuki , Munehiro Nakatani , Kazuomi Sakatani
发明人： Hiroyuki Suzuki , Munehiro Nakatani , Kazuomi Sakatani
IPC分类号： H04N1/41 , G06T9/00 , H04N1/64 , H04N9/78 , H04N11/04 , H04N19/102 , H04N19/132 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/423 , H04N19/60 , H04N19/625 , H04N19/80 , H04N19/85 , H04N19/86 , H04N19/91 , H04N9/65 , G03F3/08 , H04N1/46 , H04N9/68
CPC分类号： H04N11/044 , H04N1/64 , H04N11/042 , H04N19/527 , H04N19/86
摘要： In data processing wherein image data are processed by dividing them into blocks, a chroma data W is obtained from the color difference data W.sub.R and W.sub.B, and the color difference data W.sub.R and W.sub.B are corrected according to an amplitude of the chroma data W. For example, if the chroma W is smaller than a prescribed threshold value, the color difference data W.sub.R and W.sub.B are set as zero. Then, the so-called block distortion can be prevented. The degree of the correction may depend on the amplitude of the chroma data W. On the other hand, DC coefficients of discrete cosine transform coefficients of adjacent blocks are compared with each other. When the DC coefficients are different from each other, block distortion occurs if they represent a same image. Then, if differences of DC coefficients of discrete cosine transform coefficients of adjacent blocks are small with each other, the DC coefficients are corrected to tend to have similar values. As to the AC coefficients, a comparator compares absolute values of AC components in the DCT coefficient data received from a discrete cosine transform section with a prescribed threshold value. Then, if absolute values of AC components in the DCT coefficient data are smaller than a prescribed threshold value, the values of the AC components are not sent to a coding section because in such cases read errors or the like are thought to affect the AC components.
摘要翻译：在通过将图像数据分割为块来处理图像数据的数据处理中，从色差数据WR和WB获得色度数据W，并且根据色度数据W的幅度校正色差数据WR和WB。例如，如果色度W小于规定的阈值，则色差数据WR和WB被设置为零。然后，可以防止所谓的块变形。校正的程度可以取决于色度数据W的幅度。另一方面，将相邻块的离散余弦变换系数的DC系数相互比较。当DC系数彼此不同时，如果它们表示相同的图像，则发生块失真。然后，如果相邻块的离散余弦变换系数的DC系数的差异较小，那么DC系数被校正以倾向于具有相似的值。对于AC系数，比较器将从离散余弦变换部接收的DCT系数数据中的AC分量的绝对值与规定的阈值进行比较。然后，如果DCT系数数据中的AC分量的绝对值小于规定的阈值，则AC分量的值不会发送到编码部，因为在这种情况下，认为读出错误等会影响AC分量。

82. 发明授权

US5959491A Apparatus and method for noise suppression in a balanced modulating device 失效
标题翻译：平衡调制装置噪声抑制装置及方法
公开(公告)号：US5959491A
公开(公告)日：1999-09-28
申请号：US961599
申请日：1997-10-31
申请人： Jae-sung Kang
发明人： Jae-sung Kang
IPC分类号： H04N9/77 , H03C1/54 , H03F3/45 , H04N9/64 , H04N9/65 , G06F7/44
CPC分类号： H04N9/646
摘要： A circuit and method are shown for suppressing a common-mode noise signal in a pair of differential balanced-modulated color signals. A complementary balanced-modulated color signal, which includes the common-mode noise signal, inverse modulates a first current in a first transistor which is connected in series with a second transistor. The second transistor sinks a second current responsive to a common base current. A balanced-modulated color signal, which also includes the common-mode noise signal, inverse modulates the current in a third transistor which is connected in series with a fourth transistor. The fourth transistor sinks a fourth current responsive to the common base current. The common base current is produced by driving a fifth transistor with the first current less the second current signal. An output signal that is free of the common mode noise signal is produced by subtracting the fourth current from the third current.
摘要翻译：示出了用于抑制一对差分平衡调制颜色信号中的共模噪声信号的电路和方法。包括共模噪声信号的互补平衡调制彩色信号对与第二晶体管串联连接的第一晶体管中的第一电流进行逆调制。第二晶体管响应于公共基极电流而吸收第二电流。还包括共模噪声信号的平衡调制彩色信号对与第四晶体管串联连接的第三晶体管中的电流进行逆调制。第四晶体管响应于公共基极电流而吸收第四电流。公共基极电流通过驱动第五晶体管产生，其中第一电流小于第二电流信号。通过从第三电流中减去第四电流来产生没有共模噪声信号的输出信号。

83. 发明授权

US5946053A Image encoder and subcarrier signal generator 失效
标题翻译：图像编码器和副载波信号发生器
公开(公告)号：US5946053A
公开(公告)日：1999-08-31
申请号：US959470
申请日：1997-10-28
申请人： Chen-Pang Kung , Pei-Hui Tung , Yuan-Ping Huang
发明人： Chen-Pang Kung , Pei-Hui Tung , Yuan-Ping Huang
IPC分类号： G06T9/00 , H04N9/65
CPC分类号： H04N9/65 , G06T9/001
摘要： An image encoder and subcarrier signal generator. The present invention uses a system clock signal to generate a first subcarrier signal and a second subcarrier signal with a phase-delay of 90.degree. behind the first subcarrier signal.
摘要翻译：图像编码器和副载波信号发生器。本发明使用系统时钟信号来产生第一副载波信号和第一副载波信号，第一副载波信号与第一副载波信号相位延迟90°。

84. 发明授权

US5546428A Differentially encoding quadrature phase shift keying modulation method and apparatus thereof 失效
标题翻译：差分编码正交相移键控调制方法及其装置
公开(公告)号：US5546428A
公开(公告)日：1996-08-13
申请号：US132262
申请日：1993-10-06
申请人： Il-hyun Nam , Kwan-seong Kim
发明人： Il-hyun Nam , Kwan-seong Kim
IPC分类号： H04N19/50 , H04L25/49 , H04L27/20 , H04L27/34 , H04N9/65 , H04N19/42 , H04N19/423 , H04N19/80 , H04N19/85 , H03C3/00 , H03K7/06 , H04L27/10
CPC分类号： H04L25/49 , H04L27/2071
摘要： A differentially encoded quadrature modulation method comprises the steps of setting an index corresponding to a phase variation value constituted of input data, forming a phase value to obtain a phase-modulated output phase value from a given table and forming a channel signal to obtain in-phase (I) and quadrature (Q) channel signals from a given table using the phase value. The apparatus for performing the above comprises a signal converter for converting serially input data into two binary signal trains, a signal forming portion for obtaining channel signals, a digital-to-analog converter for converting the respective signals into two analog signals, a baseband filter for baseband-pass-filtering the signals, a phase shifter for shifting a carrier by 90.degree., first and second multipliers for multiplying the filtered signals with the carrier and phase-shifted carrier, respectively, and a mixer for mixing the respectively obtained signals and outputting a combined signal. Accordingly, the phase difference according to symbol is implemented alter being assigned to the corresponding index value stored in a look-up table. The final modulation output phase together with the previous phase value is directly obtained by using the look-up table. Accordingly, the construction of the circuit is simplified and the size of the chip is reduced for lower power consumption. Also, modulation speed is improved and a reliable modulation signal can be formed.
摘要翻译：差分编码的正交调制方法包括以下步骤：设置与由输入数据组成的相位变化值相对应的索引，形成相位值以从给定表获得相位调制输出相位值，并形成通道信号，相位（I）和正交（Q）通道信号。用于执行上述的装置包括用于将串行输入数据转换成两个二进制信号串的信号转换器，用于获得信道信号的信号形成部分，用于将各个信号转换成两个模拟信号的数模转换器，基带滤波器用于对信号进行基带通滤波，用于将载波移位90°的移相器，用于将滤波后的信号与载波和相移载波相乘的第一和第二乘法器，以及用于混合分别获得的信号和输出组合信号。因此，根据符号的相位差被改变分配给存储在查找表中的对应的索引值。通过使用查找表直接获得最终调制输出相位与前一相位值的相位。因此，简化了电路的结构，并且为了降低功耗而降低了芯片的尺寸。此外，调制速度提高，可以形成可靠的调制信号。

85. 发明授权

US5546133A Image signal processing apparatus using simplified D/A conversion 失效
标题翻译：使用简化D / A转换的图像信号处理装置
公开(公告)号：US5546133A
公开(公告)日：1996-08-13
申请号：US440888
申请日：1995-05-15
申请人： Yoshihiro Honma
发明人： Yoshihiro Honma
IPC分类号： H04N5/91 , H04N5/77 , H04N5/92 , H04N7/24 , H04N9/78 , H04N9/79 , H04N9/83 , H04N11/04 , H04N19/00 , H04N19/42 , H04N19/423 , H04N19/80 , H04N19/85 , H04N9/65
CPC分类号： H04N9/83 , H04N5/772 , H04N9/7904
摘要： An image signal processing apparatus is arranged to convert input analog color-difference signals into digital color-difference signals, form a digital chrominance signal by using the digital color-difference signals, multiplex the formed digital chrominance signal onto the digital color-difference signals, convert the formed digital signal into an analog signal, and separate the analog signal into color-difference signals and a chrominance signal. With this arrangement, it is possible to simplify the arrangement of the apparatus and reduce the size, weight and cost thereof.
摘要翻译：图像信号处理装置被配置为将输入的模拟色差信号转换为数字色差信号，通过使用数字色差信号形成数字色度信号，将形成的数字色度信号复用到数字色差信号上，将形成的数字信号转换为模拟信号，并将模拟信号分离成色差信号和色度信号。通过这种布置，可以简化装置的布置并减小其尺寸，重量和成本。

86. 发明授权

US5379077A System for and method of, operating upon NTSC and PAL signals 失效
标题翻译：用于NTSC和PAL信号的系统和方法
公开(公告)号：US5379077A
公开(公告)日：1995-01-03
申请号：US164263
申请日：1993-12-09
申请人： Keith A. Jack , Douglas D. Moran , David J. Wicker
发明人： Keith A. Jack , Douglas D. Moran , David J. Wicker
IPC分类号： H04N5/46 , H04N9/65 , H04N11/14 , H04N11/16 , H04N9/64
CPC分类号： H04N9/65 , H04N11/143 , H04N11/162 , H04N5/46
摘要： A system converts PAL and NTSC pixel clock signals to signals (in a studio, digital or square pixel format) at a sub-carrier frequency individual to the PAL and NTSC formats. The system includes a first register for providing a particular increase in the register count upon each occurrence of a pixel clock signal. Any remainder in the first register upon the production of the output signal is introduced to the register upon the occurrence of the next pixel clock signal. The particular increase in the first register count is controlled by a value in a second register, this value being adjustable dependent upon the system format and mode. A sequence of registers may be substituted for the first register with each register receiving an output from the previous register in the sequence. The system also converts signals representing the primary colors to luminance and chrominance signals. The luminance and chrominance signals are processed to produce a control signal having characteristics dependent upon the cumulative intensity of the luminance and chrominance. The control signal is used to vary the amplitude of the chrominance signals so that the chrominance intensity does not increase above or decrease below a problematic level at any instant.
摘要翻译：系统将PAL和NTSC像素时钟信号以个别为PAL和NTSC格式的子载波频率转换成信号（以录音室，数字或正方形像素格式）。该系统包括第一寄存器，用于在每次出现像素时钟信号时提供寄存器计数的特定增加。在产生输出信号时，第一个寄存器中的任何余数在下一个像素时钟信号出现时被引入寄存器。第一寄存器计数的特定增加由第二寄存器中的值控制，该值可根据系统格式和模式进行调整。寄存器序列可以代替第一个寄存器，每个寄存器接收序列中先前寄存器的一个输出。该系统还将表示原色的信号转换为亮度和色度信号。处理亮度和色度信号以产生具有取决于亮度和色度的累积强度的特性的控制信号。控制信号用于改变色度信号的幅度，使得色度强度在任何时刻都不会高于或降低到有问题的水平以下。

87. 发明授权

US5365275A Method and apparatus for generating PAL video signal by digital processing 失效
标题翻译：通过数字处理产生PAL视频信号的方法和装置
公开(公告)号：US5365275A
公开(公告)日：1994-11-15
申请号：US900299
申请日：1992-06-18
申请人： Hiroaki Kobayashi
发明人： Hiroaki Kobayashi
IPC分类号： H04N9/64 , H04N9/65 , H04N11/16 , H04N11/04
CPC分类号： H04N11/162
摘要： Disclosed is a method and apparatus for highly stably and accurately generating a PAL video signal by digital processing. The method and apparatus comprise generating a basic clock having a frequency which is 11.times.N times (N: an integer) as high as a horizontal synchronization frequency F.sub.H, producing digital data of orthogonal color subcarriers, color difference signals and a luminance signal respectively with the timing of the basic clock, multiplying the digital data D.sub.B-Y D.sub.R-Y of the color difference signals by the digital data Dsin and Dcos of the color subcarriers respectively to obtain digital data of two kinds of modulation signals, adding the digital data D.sub.Y+S of the luminance signal to the digital data of the two modulation signals, and effecting digital/analog conversion of the addition to provide the PAL video signal.
摘要翻译：公开了通过数字处理高度稳定且精确地产生PAL视频信号的方法和装置。该方法和装置包括产生具有与水平同步频率FH相同的11×N倍（N：整数）的频率的基本时钟，分别产生正交彩色副载波，色差信号和亮度信号的数字数据，其中定时的基本时钟，将色差信号的数字数据DB-Y DR-Y分别乘以彩色副载波的数字数据Dsin和Dcos，以获得两种调制信号的数字数据，将数字数据DY + S 将亮度信号提供给两个调制信号的数字数据，并进行加法的数字/模拟转换以提供PAL视频信号。

88. 发明授权

US4985754A High index color encoding system 失效
标题翻译：高指数颜色编码系统
公开(公告)号：US4985754A
公开(公告)日：1991-01-15
申请号：US309284
申请日：1989-02-10
申请人： William C. Levan
发明人： William C. Levan
IPC分类号： H04N9/64 , H04N9/65 , H04N11/14
CPC分类号： H04N11/143 , H04N9/641 , H04N9/65
摘要： A high index color encoding system (10) is provided for the purpose of receiving RGB video input from a personal computer or similar device and generating video signals in other formats for use by conventional video equipment. The color encoding system (10) includes operational circuitry (30) adapted to shape and modify the chrominance portions of the signals at a relatively high carrier frequency of four times the NTSC standard frequency with the lower NTSC output carrier being reconstituted by a doubly balanced mixer (266) component, thus substantially improving signal quality. The operational circuitry further includes synchronization generation circuitry (148), a Y, I, Q matrix (66) for creating luminance and chrominance components from RGB signals, an I, Q modulator (96) for producing high quality chrominance output and a dynamic aperture (246) for enhancing the rise slope of the luminance signal, among other components. Various available video outputs to the system (10) are user selectable and user adjustable for compatibility with desired end use equipment and formats. The primary expected uses of the system are in graphics generation applications, utilization of conventional video equipment for computer video display and in memorialization of computer display sequences.
摘要翻译：提供了一种高索引颜色编码系统（10），用于从个人计算机或类似设备接收RGB视频输入，并产生其他格式的视频信号以供常规视频设备使用。颜色编码系统（10）包括操作电路（30），其适于在NTSC标准频率的四倍的相对较高的载波频率处对信号的色度部分进行成形和修改，其中较低的NTSC输出载波由双平衡混频器（266）分量，从而显着提高信号质量。操作电路还包括同步产生电路（148），用于从RGB信号产生亮度和色度分量的Y，I，Q矩阵（66），用于产生高质量色度输出的I，Q调制器（96）和动态光圈（246），用于增强亮度信号的上升斜率等。系统（10）的各种可用视频输出是用户可选择的，并且用户可调节以便与期望的最终用途设备和格式兼容。系统的主要预期用途是在图形生成应用中，利用传统的视频设备进行计算机视频显示和纪念计算机显示序列。

89. 发明授权

US4719504A Method for converting an analog picture signal into an amplitude-discrete output signal 失效
标题翻译：将模拟图像信号转换为振幅离散输出信号的方法
公开(公告)号：US4719504A
公开(公告)日：1988-01-12
申请号：US589432
申请日：1984-03-14
申请人： Peter E. Draheim , Walter H. Demmer , Otto L. Warmuth
发明人： Peter E. Draheim , Walter H. Demmer , Otto L. Warmuth
IPC分类号： H03M1/20 , H03M1/00 , H04N7/26 , H04N9/64 , H04N11/04 , H04N9/65 , H04N9/66
CPC分类号： H04N9/64 , H03M1/06 , H03M1/365
摘要： In a circuit arrangement for converting an analog picture signal, which corresponds to consecutive fields, into an amplitude-discrete output signal, which, in a comparison stage, compares the picture signal to a plurality of reference values and produces an amplitude-discrete intermediate signal at an output, a significant simplification of the circuit cost and design effort is accomplished with, at the same time, an improvement in the error cancellation by the fact that the change in the positions of the values of the picture signal and the reference values relative to each other corresponds to the sum of a fraction and a first integral number of value intervals.
摘要翻译：在用于将对应于连续场的模拟图像信号转换成幅度离散输出信号的电路装置中，其在比较级中将图像信号与多个参考值进行比较，并产生振幅离散中间信号在输出端，通过以下事实实现电路成本和设计工作的显着简化，同时通过图像信号的值和参考值的相对位置的改变来改进误差消除彼此对应于分数和第一整数值的值间隔的和。

90. 发明授权

US4665434A Method and apparatus for generating a S.E.C.A.M. modulating signal 失效
标题翻译：用于生成S.E.C.A.M.的方法和装置调制信号
公开(公告)号：US4665434A
公开(公告)日：1987-05-12
申请号：US718051
申请日：1985-03-29
申请人： Antonie van Leeuwen
发明人： Antonie van Leeuwen
IPC分类号： H04N9/64 , H04N11/18 , H04N9/65
CPC分类号： H04N11/183
摘要： In an encoding circuit for the S.E.C.A.M. color television standard a signal value is added to each one of two line-sequential color difference signals to determine the quiescent frequencies. The modulating signal containing the color difference signals is subjected to double sided amplitude limitation. The ratio of the level difference between the limitation limits to the difference between the added signal values is substantially constant. The signal path for the modulating signal to the FM-oscillator comprises a controllable amplifier, limitation being effected first followed by amplification.
摘要翻译：在S.E.C.A.M.的编码电路中彩色电视标准将信号值加到两个线序色差信号中的每一个上以确定静态频率。包含色差信号的调制信号经受双面振幅限制。限制值与添加的信号值之间的差值之间的电平差的比率基本上是恒定的。调频信号到FM振荡器的信号路径包括可控放大器，首先进行限制，随后进行放大。

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