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1. 发明授权

US5850267A Non-additive video mixer 失效
标题翻译：非附加视频混合器
公开(公告)号：US5850267A
公开(公告)日：1998-12-15
申请号：US29343
申请日：1993-03-10
申请人： John Abt , James A. Delwiche
发明人： John Abt , James A. Delwiche
IPC分类号： H04N5/272 , H04N5/275 , H04N9/74 , H04N9/76 , H04N5/262
CPC分类号： H04N5/275 , H04N5/272 , H04N9/76
摘要： To provide an improved non-additive mixer, a first mixer mixes first and second video signals according to a mixer control signal derived in a new way. The first and second video signals are applied, respectively, to first and second chrominance (blocking) filters. The resulting first and second luminance signals are applied, respectively, to first and second summing circuits, where offsets may be applied to either or both of them. The difference is then taken between the first offset luminance signal and the second offset luminance signal to produce a difference luminance signal. The difference luminance signal is then multiplied by a gain control signal to produce the mixer control signal. The mixer control signal can also be used to control a second mixer, thereby providing a channel for keying information that is non-additively mixed according to the luminance content of the video signal that the key information is associated with.
摘要翻译：为了提供改进的非加法混合器，第一混频器根据以新的方式导出的混频器控制信号混合第一和第二视频信号。第一和第二视频信号分别应用于第一和第二色度（阻塞）滤波器。所得到的第一和第二亮度信号分别被施加到第一和第二求和电路，其中偏移可以被施加到它们中的一个或两者。然后在第一偏移亮度信号和第二偏移亮度信号之间取差，以产生差分亮度信号。然后将差分亮度信号乘以增益控制信号以产生混频器控制信号。混合器控制信号也可用于控制第二混频器，从而根据密钥信息相关联的视频信号的亮度内容提供用于非信息混合信息的信道。

2. 发明授权

US5235423A Controllable pseudo random noise pattern generator for use in video special effects 失效
标题翻译：用于视频特效的可控伪随机噪声模式发生器
公开(公告)号：US5235423A
公开(公告)日：1993-08-10
申请号：US973590
申请日：1992-11-09
申请人： Brion L. Dunbar , John Abt , James A. Delwiche
发明人： Brion L. Dunbar , John Abt , James A. Delwiche
IPC分类号： H04N5/262 , H04N5/265 , H04N5/272
CPC分类号： H04N5/265 , H04N5/262 , H04N5/272
摘要： A pseudo-random pattern generator has modifiable feedback so that a variety of pseudo-random video patterns can be generated and used either directly, or after further manipulation, to control the mixing of two video sources. Control of a multiplexer allows a variety of pattern lengths to be selected by altering which stages of a shift register are supplied to a feedback exclusive-OR gate. Patterns with controllable granularity can be achieved by stretching each part of the noise pattern a selectable number of times along either or both axes. Horizontal stretching is achieved by clocking the shift register more slowly than the rate at which it is being read out. Vertical stretching is achieved by repeating the same pattern on each of a selectable number of consecutive lines. Varying the ratio of the stretching along the horizontal axis to the stretching along the vertical axis allows the aspect ratio of the grains of the pattern to be controlled. The values that are used to initialize the shift register can also be altered to achieve additional variation in the patterns generated. Two (or more) modifiable pseudo-random pattern generators can be used in combination with an array of selectable filters to provide a controllable noise pattern generator with coarse and fine pattern controls and selectable filtering of the output patterns produced.
摘要翻译：伪随机模式发生器具有可修改的反馈，使得可以直接地或在进一步操纵之后生成和使用各种伪随机视频模式来控制两个视频源的混合。复用器的控制允许通过改变将移位寄存器的哪些级提供给反馈异或门来选择各种模式长度。可以通过沿着一个或两个轴沿噪声图案的每个部分拉伸可选次数来实现具有可控粒度的图案。水平拉伸通过使移位寄存器比读出速率更慢地实现。通过在可选数量的连续行中的每一个上重复相同的图案来实现垂直拉伸。改变沿着水平轴的拉伸与沿着垂直轴的拉伸的比率允许控制图案的晶粒的纵横比。用于初始化移位寄存器的值也可以被改变以实现生成的模式的附加变化。两个（或多个）可修改的伪随机模式发生器可以与可选择滤波器阵列组合使用，以提供具有粗略和精细图案控制的可控噪声模式发生器以及所产生的输出模式的可选滤波。

3. 发明授权

US4947254A Layered mix effects switcher architecture 失效
标题翻译：分层混合效果切换架构
公开(公告)号：US4947254A
公开(公告)日：1990-08-07
申请号：US345057
申请日：1989-04-27
申请人： John Abt , Richard S. Bannister
发明人： John Abt , Richard S. Bannister
IPC分类号： H04N5/262 , H04N5/268
CPC分类号： H04N5/268
摘要： A mix effects based switcher architecture provides for processing of video signals with associated key signals throughout, the mix effects (M/E) banks within the switcher outputting both a composited video signal and a composited key signal for use by subsequent M/E banks. The outputs of the M/E banks may be combined together before being input to an output M/E bank. The output M/E bank provides a layered video signal with associated composited key signal at the output of the switcher.

4. 发明授权

US4873568A Digital video effects apparatus 失效
标题翻译：数字影像效果器
公开(公告)号：US4873568A
公开(公告)日：1989-10-10
申请号：US246054
申请日：1988-09-19
申请人： Richard A. Jackson , John Abt , Ronnie D. Barnett
发明人： Richard A. Jackson , John Abt , Ronnie D. Barnett
IPC分类号： H04N5/262 , H04N5/272 , H04N9/74
CPC分类号： H04N5/272
摘要： A digital video effects apparatus comprises an input for receiving a digital input video signal representing the distribution of optical information over a video field, and a key signal generator for providing a digital key signal that defines an area of the video field. A mask signal generator provides a digital mask signal that defines at least a portion of said area of the video field. The digital mask signal is combined with the digital key signal to provide a modified digital key signal, and the input video signal is acted on in accordance with the modified key signal to provide an output video signal.

5. 发明授权

US4805022A Digital wipe generator 失效
标题翻译：数字擦拭发生器
公开(公告)号：US4805022A
公开(公告)日：1989-02-14
申请号：US158827
申请日：1988-02-19
申请人： John Abt
发明人： John Abt
IPC分类号： G06T11/20 , H04N5/265 , H04N5/272
CPC分类号： H04N5/265
摘要： A digital wipe generator has a digital waveform generator to generate X and Y digital waveforms from a composite sync signal. A digital wipe solid generator processes the X and Y digital waveforms to produce a digital wipe solid waveform. The wipe solid generator has a circle generator using a square root function which preshifts the sum of the squares prior to access to a look-up table, and then post shifts the output of the look-up table by one-half the amount of the preshift to produce a desired curve pattern for the digital wipe solid waveform. The digital wipe solid waveform is input to mixer circuits where it is processed to produce an anti-aliased key signal for mixing external video signals, the anti-aliasing being based upon an interpolation/decimation scheme using fractional bits of the digital wipe solid waveform. The output of the mixer circuits is a desired wipe transition.

6. 发明授权

US5638133A Method of creating video effects by use of keyframes 失效
标题翻译：通过使用关键帧创建视频效果的方法
公开(公告)号：US5638133A
公开(公告)日：1997-06-10
申请号：US446180
申请日：1995-05-19
申请人： James V. Squier, deceased , Raymond C. Blackham , John Abt , Nathan Osborn
发明人： James V. Squier, deceased , Raymond C. Blackham , John Abt , Nathan Osborn
IPC分类号： G06T13/00 , G11B27/031 , H04N5/262 , H04N9/75 , H04N9/74
CPC分类号： G11B27/031 , H04N5/262
摘要： A video effect is created with a video processing machine having a plurality of functions, each of which has a state that is selectively variable in response to change in an associated function parameter. The method comprises selecting a set of functions, specifying a starting keyframe containing a starting value for each of the parameters, specifying an ending keyframe containing ending values for the parameters associated with the functions of the selected set and vacancies for the other parameters associated with other functions, and specifying a number of video frames. The starting keyframe is used to place the machine in a starting state, in which each function has the status defined by the value of its associated parameter in the starting keyframe, and a first video frame is processed with the processing machine in the starting state. The starting keyframe, the ending keyframe and the number of video frames are used to calculate a next frame value for each of the parameters associated with a function in the selected set. The next frame values are used to place the machine in a next frame state, in which each function of the set has the status defined by the next frame value of its associated parameter, while maintaining unaltered the values of the parameters associated with the other functions, and the next video frame is processed with the machine in the next frame state.
摘要翻译：使用具有多个功能的视频处理机创建视频效果，每个功能具有响应于相关联的功能参数的变化而选择性地变化的状态。该方法包括选择一组功能，指定包含每个参数的起始值的起始关键帧，指定包含与所选集合的功能相关联的参数的结束值的结束关键帧，以及与其他参数相关联的其他参数的空位功能，并指定多个视频帧。起始关键帧用于将机器置于起始状态，其中每个功能具有由起始关键帧中其关联参数的值定义的状态，并且处理机处于起始状态的第一视频帧被处理。起始关键帧，结束关键帧和视频帧数用于计算与所选集合中的功能相关联的每个参数的下一帧值。下一帧值用于将机器置于下一帧状态，其中该组的每个功能具有由其相关参数的下一帧值定义的状态，同时保持与其他功能相关联的参数的值，并且下一个视频帧在机器处于下一帧状态。

7. 发明授权

US4858011A Video switcher system with modular architecture 失效
标题翻译：具有模块化架构的视频切换器系统
公开(公告)号：US4858011A
公开(公告)日：1989-08-15
申请号：US177212
申请日：1988-04-04
申请人： Richard A. Jackson , Peter D. Symes , Richard S. Bannister , Thomas A. Grancey , Richard A. Frasier , John Abt , Ronnie D. Barnett , James E. Blecksmith , Kevin D. Windrem , Neil R. Olmstead
发明人： Richard A. Jackson , Peter D. Symes , Richard S. Bannister , Thomas A. Grancey , Richard A. Frasier , John Abt , Ronnie D. Barnett , James E. Blecksmith , Kevin D. Windrem , Neil R. Olmstead
IPC分类号： H04N5/268
CPC分类号： H04N5/268
摘要： Video signal processing apparatus comprises at least first and second source selectors each having a plurality of input terminals, for receiving a plurality of video signals respectively, and at least two output terminals. A set of video processors each have an input terminal and an output terminal. A processor selector is provided for connecting each source selector output terminal selectively to each video processor input terminal. First and second output devices each have a plurality of input terminals connected to the output terminals of the video processors respectively and also have an output terminal. Operator interfaces are connected to the processor selector for defining a first subset of video processors having their input terminals connected to the output terminals of the first source selector and a second subset of video processors having their input terminals connected to the output terminals of the second source selector. The operator interfaces are also connected to the first output device for selecting the output terminals of the first subset of video processors and to the second output device for selecting the output terminals of the second subset of video processors.

8. 发明授权

US4853784A Video switcher with independent processing of selected video signals 失效
标题翻译：具有独立处理所选视频信号的视频切换器
公开(公告)号：US4853784A
公开(公告)日：1989-08-01
申请号：US157675
申请日：1988-02-19
申请人： John Abt , Ronnie D. Barnett , James E. Blecksmith , Kevin D. Windrem , Neil R. Olmstead , Richard A. Jackson , Peter D. Symes , Richard S. Bannister , Thomas A. Grancey , Richard A. Frasier
发明人： John Abt , Ronnie D. Barnett , James E. Blecksmith , Kevin D. Windrem , Neil R. Olmstead , Richard A. Jackson , Peter D. Symes , Richard S. Bannister , Thomas A. Grancey , Richard A. Frasier
IPC分类号： H04N5/262 , H04N5/265 , H04N5/268 , H04N5/272 , H04N5/278
CPC分类号： H04N5/268
摘要： A video switcher comprises a source selector having a plurality of input terminals for connection to a plurality of video sources respectively, and at least two output terminals. At least two processing channels each have an input terminal connected to an output terminal of the source selector and also have an output terminal. A video combiner has video input terminals connected to the output terminals of the processing channels and is operative to combine the output signals provided by the processing channels in dependence upon priority signals.

9. 发明授权

US4823183A Video mixer with multicolor boarder 失效
标题翻译：视频混音器与多色寄存器
公开(公告)号：US4823183A
公开(公告)日：1989-04-18
申请号：US150598
申请日：1988-02-01
申请人： Richard A. Jackson , John Abt
发明人： Richard A. Jackson , John Abt
IPC分类号： H04N5/265 , H04N9/74 , H04N9/75 , H04N9/76
CPC分类号： H04N5/265
摘要： Video effects apparatus comprises a wipe generator for generating a wipe signal and a matte generator for generating a matte signal. The matte generator receives the wipe signal and the color represented by the matte signal is dependent on the wipe signal. First and second control signals are provided in response to the wipe signal. A first video mixer has signal input terminals connected to receive a first video signal and the matte signal respectively and a mix control input terminal connected to receive the first control signal as a mix control signal, and a second video mixer has signal input terminals connected to receive respectively a second video signal and the output signal of the first video mixer. The second mixer has a mix control input terminal connected to receive the second control signal as a mix control signal.

10. 发明授权

US4821269A Diagnostic system for a digital signal processor 失效
标题翻译：数字信号处理器的诊断系统
公开(公告)号：US4821269A
公开(公告)日：1989-04-11
申请号：US922367
申请日：1986-10-23
申请人： Richard A. Jackson , David E. Lake, Jr. , James E. Blecksmith , Ronnie D. Barnett , John Abt
发明人： Richard A. Jackson , David E. Lake, Jr. , James E. Blecksmith , Ronnie D. Barnett , John Abt
IPC分类号： G01R31/28 , G01R31/3185 , G06F11/22 , G06F11/25 , G06F11/00
CPC分类号： G01R31/318505 , G06F11/22 , G06F11/25
摘要： A diagnostic system for a digital signal processor, having an input module, an output module and a plurality of successive processing modules defining a signal processing path, monitors various internal test points within each module. Any one of the test points may be connected to a diagnostic bus. The output of the diagnostic bus may be appropriately modified and input to the output module in lieu of the digital signal from the last processing module to provide a diagnostic display.
摘要翻译：一种用于数字信号处理器的诊断系统，具有输入模块，输出模块和定义信号处理路径的多个连续的处理模块，监视每个模块内的各种内部测试点。任何一个测试点可以连接到诊断总线。可以适当地修改诊断总线的输出并将其输入到输出模块以代替来自最后处理模块的数字信号以提供诊断显示。

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