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1. 发明授权

US4562456A Analog-to-digital conversion apparatus including a circuit to substitute calculated values when the dynamic range of the converter is exceeded 失效
标题翻译：模数转换装置包括当超过转换器的动态范围时替代计算值的电路
公开(公告)号：US4562456A
公开(公告)日：1985-12-31
申请号：US542706
申请日：1983-10-17
申请人： Thomas V. Bolger
发明人： Thomas V. Bolger
IPC分类号： H03M1/10 , H03M1/00 , H03M1/20 , H04B14/04 , H04N7/26 , H03K13/24
CPC分类号： H03M1/208
摘要： The quantizing resolution of an analog-to-digital converter is effectively enhanced for sinusoidal input signals by (a) sampling the signal at 90 degree intervals of the sinusoid; (b) establishing the input range of the converter to be less than the dynamic range of the signal but arranged so that at least three of four successive samples are true or correct values; (c) detecting the occurrence of saturated fourth sample values; (d) calculating correct values for saturated sample values from preceding samples; and (e) substituting calculated values for saturated incorrect values.
摘要翻译：通过（a）以正弦曲线的90度间隔采样信号，对正弦输入信号有效地增强了模数转换器的量化分辨率; （b）将转换器的输入范围建立成小于信号的动态范围，但是布置成使得四个连续采样中的至少三个为真或正确的值; （c）检测饱和第四样本值的发生; （d）从前面的样品计算饱和样品值的正确值; 和（e）将计算值代入饱和不正确值。

2. 发明授权

US4500912A FIR Chrominance bandpass sampled data filter with internal decimation 失效
标题翻译： FIR色度带通采样数据滤波器，内部抽取
公开(公告)号：US4500912A
公开(公告)日：1985-02-19
申请号：US405172
申请日：1982-08-04
申请人： Thomas V. Bolger
发明人： Thomas V. Bolger
IPC分类号： H04N9/45 , H03H17/00 , H03H17/06 , H04N9/66 , H04N9/78 , H04N9/535
CPC分类号： H03H17/0664 , H04N9/78
摘要： A sampled data filter for separating chrominance signal from digitized composite video sampled at a 4f.sub.sc rate produces filtered sampled data chrominance signal at one half the input sample rate. The input video signal occurring as a 4f.sub.sc +I, +Q, -I, -Q sample sequence is decimated in the filter so that only the filtered replicas of the +I and +Q samples are computed. This effectively doubles the computational time permitted the filter circuitry without substantially compromising signal content.
摘要翻译：用于从4fsc速率采样的数字化复合视频中分离色度信号的采样数据滤波器以输入采样率的一半产生滤波后的采样数据色度信号。在滤波器中抽取作为4fsc + I，+ Q，-I，-Q采样序列发生的输入视频信号，以便仅计算+ I和+ Q个采样的滤波后的副本。这实际上使得滤波器电路的计算时间增加了一倍，而基本上不损害信号内容。

3. 发明授权

US4670772A Raster distortion correction for progressive scan television system 失效
标题翻译：逐行扫描电视系统的光栅失真校正
公开(公告)号：US4670772A
公开(公告)日：1987-06-02
申请号：US687531
申请日：1984-12-28
申请人： Thomas V. Bolger
发明人： Thomas V. Bolger
IPC分类号： H04N9/12 , H04N5/44 , H04N9/28 , H04N11/20
CPC分类号： H04N7/012 , H04N9/28
摘要： A progressive scan video display apparatus incorporates beam landing error correction circuitry. Beam landing error correction may be accomplished prior or subsequent to video information interpolation and prior or subsequent to video information speedup. The correction circuits utilize sample interpolation techniques to provide accurate beam landing error correction for each of the red, green and blue video information signals.
摘要翻译：逐行扫描视频显示装置包括光束着陆误差校正电路。光束着陆误差校正可以在视频信息插值之前或之后，以及在视频信息加速之前或之后完成。校正电路利用样本插值技术为红色，绿色和蓝色视频信息信号中的每一个提供精确的光束着陆误差校正。

4. 发明授权

US4600945A Digital video processing system with raster distortion correction 失效
标题翻译：具有光栅失真校正的数字视频处理系统
公开(公告)号：US4600945A
公开(公告)日：1986-07-15
申请号：US480907
申请日：1983-03-31
申请人： Thomas V. Bolger
发明人： Thomas V. Bolger
IPC分类号： H04N5/14 , H04N3/233 , H04N5/68
CPC分类号： H04N3/2335
摘要： In a color television receiver in which video signals are processed in digital form, the rate at which the digital video samples are supplied to a digital-to-analog converter arrangement is varied in a predetermined manner to produce a display that is substantially free of raster distortion. The digital video samples are first entered into a digital store such as a FIFO and then read out of the FIFO by a selected one of four read clocks. The read clocks are of the same frequency but of different phase. By selecting different read clocks to apply to the digital store, the rate at which the store reads out the digital samples is varied.
摘要翻译：在以数字形式处理视频信号的彩色电视接收机中，将数字视频样本提供给数模转换器装置的速率以预定的方式变化，以产生基本上没有光栅的显示失真。首先将数字视频样本输入到诸如FIFO的数字存储器中，然后通过四个读取时钟中的所选择的一个读出FIFO。读时钟具有相同的频率但具有不同的相位。通过选择不同的读取时钟来应用于数字存储，商店读取数字样本的速率是变化的。

5. 发明授权

US4523221A TV Receiver circuitry for performing chroma gain, auto-flesh control and the matrixing of I and Q signals to (R-Y), (B-Y) and (G-Y) signals 失效
标题翻译： TV接收器电路，用于执行色度增益，自动控制和将I和Q信号矩阵化为（R-Y），（B-Y）和（G-Y）信号
公开(公告)号：US4523221A
公开(公告)日：1985-06-11
申请号：US501908
申请日：1983-06-07
申请人： Danny Chin , Eric P. Batterman , Thomas V. Bolger
发明人： Danny Chin , Eric P. Batterman , Thomas V. Bolger
IPC分类号： H04N9/64 , H04N9/67 , H04N9/68 , H04N9/535
CPC分类号： H04N9/64 , H04N9/643 , H04N9/67
摘要： A color TV receiver designed to digitally process I and Q color mixture signals incorporates chroma gain control, static tint control and autoflesh in the circuitry for converting the I and Q signals to (R-Y), (B-Y) and (G-Y) for R,G,B matrixing. The magnitude and angle of the vector sum of I and Q are first determined. The angles are then adjusted for static tint control and then applied to a ROM which is programmed to output angles adjusted for fleshtones. Angles from the autoflesh ROM are applied to a summing circuit which algebraically adds to the flesh corrected angle, angle values corresponding to the angular displacement between the I axes and the (R-Y), (B-Y) and (G-Y) axes. The angles produced by the summing circuit are applied to a look-up ROM which produces the cosine values of the applied angles.The magnitude signal is amplified by coefficients which relate the I and Q signals to (R-Y), (B-Y) and (G-Y) components and which coefficients may be amplified by a chroma gain signal. The amplified magnitude signal is thereafter multiplied by the cosine values which effectively projects the vector sum or chrominance signal onto the respective (R-Y), (B-Y) and (G-Y) axes to generate instantaneous (R-Y), (B-Y) and (G-Y) signal samples.
摘要翻译：设计用于数字处理I和Q彩色混合信号的彩色电视接收机在电路中包含色度增益控制，静态色调控制和自动对焦，用于将I和Q信号转换为R，G的（RY），（BY）和（GY），B矩阵。首先确定I和Q的矢量和的大小和角度。然后调整角度以进行静态色调控制，然后将其应用于ROM，该ROM被编程为输出为肉质调整的角度。来自自动提取ROM的角度被应用于对于肉眼校正角度的代数增加的加法电路，对应于I轴与（R-Y），（B-Y）和（G-Y）轴之间的角位移的角度值。由求和电路产生的角度被应用于产生施加角度的余弦值的查找ROM。幅度信号由I和Q信号与（R-Y），（B-Y）和（G-Y）分量相关的系数放大，哪些系数可以通过色度增益信号放大。放大的幅度信号此后乘以余弦值，该余弦值有效地将矢量和或色度信号投影到相应的（RY），（BY）和（GY）轴上，以产生瞬时（RY），（BY）和（GY）信号样品。

6. 发明授权

US4470069A Reduced data rate digital comb filter 失效
标题翻译：减少数据速率数字梳状滤波器
公开(公告)号：US4470069A
公开(公告)日：1984-09-04
申请号：US405031
申请日：1982-08-04
申请人： Henry G. Lewis, Jr. , Thomas V. Bolger
发明人： Henry G. Lewis, Jr. , Thomas V. Bolger
IPC分类号： H04N9/78 , H04N9/535
CPC分类号： H04N9/78
摘要： A comb filter arrangement operating at a reduced data rate is provided, which requires comparably fewer storage locations than previous arrangements. A digitized composite video signal of a given codeword rate is applied to a bandpass filter, which produces a filtered signal restricted to a portion of the passband of the composite video signal. The filtered signal is then subsampled at a rate which satisfies the Nyquist criterion for information of the restricted passband. Codewords, now at a reduced data rate, are applied to a one-H delay line, and delayed and undelayed signals are combined to produce a first comb-filtered signal. The first comb-filtered signal is then applied to an interpolator, which provides a sequence of codewords at the codeword rate of the original digitized composite video signal. This sequence of codewords is then combined with the codewords of the composite video signal to produce a second comb-filtered signal.
摘要翻译：提供以降低的数据速率操作的梳状滤波器装置，其需要与先前布置相比较少的存储位置。给定码字速率的数字化复合视频信号被施加到带通滤波器，其产生限于复合视频信号的通带的一部分的滤波信号。然后以满足限制通带信息的奈奎斯特准则的速率对滤波后的信号进行子采样。代码字现在以降低的数据速率被施加到一H延迟线，并且延迟和未延迟的信号被组合以产生第一梳状滤波信号。然后将第一梳状滤波信号应用于内插器，该内插器以原始数字化复合视频信号的码字速率提供码字序列。然后将码字序列与复合视频信号的码字组合以产生第二梳状滤波信号。

7. 发明授权

US4623915A Apparatus for processing multiple time division multiplexed asynchronous composite video signals 失效
标题翻译：用于处理多个时分复用异步复合视频信号的装置
公开(公告)号：US4623915A
公开(公告)日：1986-11-18
申请号：US653074
申请日：1984-09-21
申请人： Thomas V. Bolger
发明人： Thomas V. Bolger
IPC分类号： H04N5/265 , H04N5/45 , H04N9/64 , H04N9/74
CPC分类号： H04N5/45 , H04N9/641
摘要： A digital TV receiver is disclosed which displays the image for an auxiliary channel as an inset in the image for a main channel. The asynchronous composite video signals of the main and auxiliary channels are time division multiplexed, one line of auxiliary signal for every three lines of main signal. The chrominance and luminance components of the main channel signal are separated by an adaptive comb filter. A low-pass filter removes the luminance vertical detail components from the combed main channel chrominance and also separates the luminance components from the chrominance components for the auxiliary signal. These asynchronous time division mutliplexed chrominance signals are processed by circuitry which corrects the chrominance phase of each of the signals to be relative to a single reference phase and then separates the two quadrature modulated color difference signals. The auxiliary channel luminance and color difference signals are subsampled and stored in a memory for display as an inset. The main channel samples are stored in a one-line memory as they are written. Stored lines are displayed a second time, when auxiliary channel signals are being processed, to provide a continuous main channel image.
摘要翻译：公开了一种数字电视接收机，其将用于辅助信道的图像显示为用于主信道的图像中的插图。主通道和辅助通道的异步复合视频信号是时分复用的，每三行主信号的一条辅助信号线。主通道信号的色度和亮度分量由自适应梳状滤波器分离。低通滤波器从精梳主通道色度中去除亮度垂直细节分量，并且还将亮度分量与辅助信号的色度分量分离开。这些异步时分复用色度信号由电路处理，该电路校正每个信号的色度相位相对于单个参考相位，然后分离两个正交调制色差信号。辅助通道亮度和色差信号被二次采样并存储在用于显示的存储器中作为插图。主通道样本在写入一行存储器时存储。当正在处理辅助通道信号时，第二次显示存储行，以提供连续的主通道图像。

8. 发明授权

US4620136A Digital vertical beam landing correction circuit 失效
标题翻译：数字垂直光束着陆校正电路
公开(公告)号：US4620136A
公开(公告)日：1986-10-28
申请号：US676141
申请日：1984-11-29
申请人： Thomas V. Bolger
发明人： Thomas V. Bolger
IPC分类号： H04N9/18 , H04N3/233 , H04N9/20 , H04N9/28 , H01J29/56
CPC分类号： H04N3/2335
摘要： Circuitry corrects vertical beam landing errors for color cathode ray tubes. A digital delay circuit provides horizontal scan line video pixel information at its proper location to produce a distortion corrected raster. Accurate correction is provided by a combination of scan line offset between the input and output video signals and by sample interpolation techniques that effectively form derived pixels that have an apparent location of the derived pixel relative to the sample video pixels is determined by the selection of the interpolating coefficients.
摘要翻译：电路校正彩色阴极射线管的垂直射束着陆误差。数字延迟电路在其适当的位置提供水平扫描线视频像素信息以产生失真校正光栅。通过输入和输出视频信号之间的扫描线偏移和通过采样内插技术的组合来提供精确校正，所述采样内插技术有效地形成相对于采样视频像素具有导出像素的明显位置的导出像素，通过选择内插系数。

9. 发明授权

US4566028A Digital signal processing apparatus for processing dithered digital signals 失效
标题翻译：用于处理抖动数字信号的数字信号处理装置
公开(公告)号：US4566028A
公开(公告)日：1986-01-21
申请号：US498102
申请日：1983-05-25
申请人： Henry G. Lewis, Jr. , Thomas V. Bolger
发明人： Henry G. Lewis, Jr. , Thomas V. Bolger
IPC分类号： H04N9/64 , H04N11/04
CPC分类号： H04N9/64
摘要： In a digital signal processing system, an analog-to-digital converter producing digital representations of an analog signal is dithered to increase its apparent quantizing resolution. Certain processing of the digital signals, however, can result in the loss of the dither information, because of either the form of digital filtering employed or the number of bits of the digital signals processed. To avoid the effects of such loss, the least significant bit of the digital signals is delayed and is applied to an analog output device to reintroduce a dither signal thereat having a magnitude substantially equivalent to that of the lost bit. The present invention is useful in processing digital television signals in a television receiver having a digital signal processing section.
摘要翻译：在数字信号处理系统中，产生模拟信号的数字表示的模拟 - 数字转换器被抖动以增加其表观量化分辨率。然而，数字信号的某些处理可能导致抖动信息的丢失，因为采用了数字滤波的形式或处理了数字信号的位数。为了避免这种损耗的影响，数字信号的最低有效位被延迟并且被施加到模拟输出装置，以在其上重新引入具有与丢失位的幅度基本相同的幅度的抖动信号。本发明在具有数字信号处理部分的电视接收机中用于处理数字电视信号。

10. 发明授权

US4558348A Digital video signal processing system using asynchronous a-to-d encoding 失效
标题翻译：数字视频信号处理系统采用异步一对一编码
公开(公告)号：US4558348A
公开(公告)日：1985-12-10
申请号：US567190
申请日：1983-12-30
申请人： Thomas V. Bolger , Robert L. Libbey
发明人： Thomas V. Bolger , Robert L. Libbey
IPC分类号： H04N9/64 , H04N9/78
CPC分类号： H04N9/78 , H04N9/64
摘要： A digital TV receiver having an analog-to-digital converter which generates digital representations of the analog signal asynchronously relative to the color burst reference, includes open loop circuitry for correcting the values of the chrominance component to comport with chrominance samples having a fixed phase relationship with burst. During the burst interval the angle of the chrominance phasor relative to the asynchronous sampling instants is compared with a fixed angular reference value to generate a correction factor for the respective line of video signal. The correction factor is thereafter combined with the chrominance samples to generate new chrominance samples having a desired phase relationship with the phase of the burst reference signal.
摘要翻译：具有相对于彩色脉冲串参考异步生成模拟信号的数字表示的模数转换器的数字电视接收机包括用于校正色度分量的值以与具有固定相位关系的色度样本相匹配的开环电路与爆发。在突发间隔期间，将色度相量相对于异步采样时刻的角度与固定的角度参考值进行比较，以产生视频信号的相应行的校正因子。然后将校正因子与色度样本组合以产生与脉冲串参考信号的相位具有期望的相位关系的新的色度样本。

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