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1. 发明授权

US07576759B2 Parallel dithering contour mitigation 有权
标题翻译：平行抖动轮廓减轻
公开(公告)号：US07576759B2
公开(公告)日：2009-08-18
申请号：US10914915
申请日：2004-08-10
申请人： Gregory S. Pettitt , Bradley W. Walker , Matthew John Fritz
发明人： Gregory S. Pettitt , Bradley W. Walker , Matthew John Fritz
IPC分类号： G09G5/10
CPC分类号： G09G3/2022 , G09G3/20 , G09G3/2051 , G09G3/346
摘要： A method of producing an image. Image data word comprising image data bits for a portion of the image is received at a first frame rate. At least two threshold data values are selected. A first portion of the image data word is compared with the threshold data values. A second portion of said image data word is displayed at a frame rate at least two times said first frame rate. Image data based on the comparison between the first portion of the image data word and the threshold data values is displayed at a frame rate at least two times the first frame rate.
摘要翻译：一种制作图像的方法。包含图像的一部分的图像数据位的图像数据字以第一帧速率被接收。选择至少两个阈值数据值。将图像数据字的第一部分与阈值数据值进行比较。所述图像数据字的第二部分以至少两倍于所述第一帧速率的帧速率显示。基于图像数据字的第一部分与阈值数据值之间的比较的图像数据以至少两倍于第一帧率的帧速率显示。

2. 发明授权

US06774916B2 Contour mitigation using parallel blue noise dithering system 有权
标题翻译：使用平行蓝噪声抖动系统的轮廓减轻
公开(公告)号：US06774916B2
公开(公告)日：2004-08-10
申请号：US09795403
申请日：2001-02-26
申请人： Gregory S. Pettitt , Bradley W. Walker , Matthew John Fritz
发明人： Gregory S. Pettitt , Bradley W. Walker , Matthew John Fritz
IPC分类号： G09G334
CPC分类号： G09G3/2022 , G09G3/20 , G09G3/2051 , G09G3/346
摘要： A method and system for displaying fractional bit data in order to increase the bit depth of a PWM display without requiring the use of an excessive number of bit planes. One embodiment of the present invention combines the outputs of two random number generators (702) with the outputs of a row counter (704) and column counter (706) to yield row and column indexes into two 32×32 cell blue noise masks. The row and column indexes select a blue noise mask threshold for a given pixel. The threshold from the first blue noise mask (708) is applied to a comparator (710) where it is compared to the fractional bit portion of the pixel data. A first blue noise bit, BN(1), is generated based on this comparison. Typically, BN(1) is a “1” when the fractional portion of the pixel data exceeds the threshold value from the mask. The same threshold data is also processed by inverter (712) to produce the threshold that would be shored in an inverted form of Mask A. Inverter (712) prevents the circuitry from having to store four separate blue noise masks. The output of the inverter (712) is also compared to the fractional pixel data to produce a second blue noise bit, BN(2). In the same manner, the second blue noise mask (714) is used to generate two additional blue noise bits. The four blue noise bits are then used alternately in the quad-frame display of FIG. 5 with the integer portion of the pixel data.
摘要翻译：一种用于显示分数位数据的方法和系统，以便增加PWM显示的位深度，而不需要使用过多数量的位平面。本发明的一个实施例将两个随机数发生器（702）的输出与行计数器（704）和列计数器（706）的输出组合，以将行和列索引合并成两个32×32单元蓝噪声掩码。行和列索引为给定像素选择蓝色噪声屏蔽阈值。来自第一蓝色噪声掩码（708）的阈值被施加到比较器（710），在比较器（710）中将其与像素数据的分数位部分进行比较。基于该比较生成第一蓝噪声比特（BN）（1）。通常，当像素数据的分数部分从掩模超过阈值时，BN（1）为“1”。相同的阈值数据也由逆变器（712）处理，以产生将以掩模A的反向形式被触发的阈值。逆变器（712）防止电路必须存储四个分开的蓝色噪声掩模。反相器（712）的输出也与分数像素数据进行比较，以产生第二蓝色噪声比特（BN）（2）。以相同的方式，第二蓝色噪声掩码（714）用于产生两个附加的蓝色噪声比特。然后四个蓝色噪声比特在图4的四帧显示中交替使用。 5与像素数据的整数部分。

3. 发明授权

US5903308A Phase compensation for video cameras 失效
标题翻译：摄像机的相位补偿
公开(公告)号：US5903308A
公开(公告)日：1999-05-11
申请号：US702915
申请日：1996-08-26
申请人： Alan Neal Cooper , David William Bauerle , Matthew John Fritz
发明人： Alan Neal Cooper , David William Bauerle , Matthew John Fritz
IPC分类号： H04N5/232
CPC分类号： H04N5/232
摘要： A system for processing video signals to compensate for distance-induced video signal delays includes a camera controller and distant camera are arranged so that the camera controller generates and sends a synchronization signal to the camera, which upon receiving it generates and sends back to the camera controller a reference signal starting at a fixed time following camera receipt of the synchronization signal, and further arranged so that the reference signal upon receipt by the camera controller is compared by the reference pulse comparator to determine if it is late, early, or at an acceptable time, upon which determination a phase adjustment signal is generated and sent by the camera controller to the camera second timing generator phase offset adjustment section to adjust appropriately the timing of the insertion of a video signal onto the transmission line by the camera.
摘要翻译：用于处理视频信号以补偿距离引起的视频信号延迟的系统包括相机控制器和远距摄像机被布置，使得照相机控制器产生并发送同步信号给照相机，该摄像机在接收时产生并发送回相机控制器在相机接收到同步信号之后的固定时间开始的参考信号，并且进一步被布置成使得由摄像机控制器接收到的参考信号被参考脉冲比较器进行比较，以确定它是迟到的，早期的还是在由相机控制器产生并发送相位调整信号到照相机第二定时发生器相位偏移调整部分以适当地调整由相机将视频信号插入到传输线上的定时的可接受时间。

4. 发明授权

US5825411A Video signal routing system 失效
标题翻译：视频信号路由系统
公开(公告)号：US5825411A
公开(公告)日：1998-10-20
申请号：US702912
申请日：1996-08-26
申请人： Alan Neal Cooper , David William Bauerle , Matthew John Fritz
发明人： Alan Neal Cooper , David William Bauerle , Matthew John Fritz
IPC分类号： H04N5/073 , H04B1/74 , H04N7/18
CPC分类号： H04N7/181
摘要： A video signal routing system includes a video signal carrying line arranged in a loop beginning and ending at a signal multiplexer, a plurality of video cameras electrically connected to the line at points spaced therealong, and a video output line connected to receive video signals from the multiplexer. A synchronization signal insertion device and a code signal insertion device are located in the video signal carrying line adjacent the beginning of the loop between the multiplexer and the cameras. A duplicate synchronization signal insertion device and a duplicate code signal insertion device are located in the video signal carrying line adjacent the end of the loop between the multiplexer and the cameras. A timing generator and interface receives signals from a synch detector and a video level detector in the video output line and is controlled by a microcontroller. The microcontroller and the timing generator and interface control the synchronization signal insertion device, the code signal insertion device, the duplicate synchronization signal insertion device, and the duplicate code signal insertion device.
摘要翻译：视频信号路由系统包括以信号多路复用器开始和结束的循环中布置的视频信号承载线路，在与其间隔开的点处电连接到线路的多个摄像机，以及视频输出线路，用于接收来自复用器。同步信号插入装置和代码信号插入装置位于与多路复用器和相机之间的环路开始处相邻的视频信号承载线中。复制同步信号插入装置和重复码信号插入装置位于与多路复用器和相机之间的环路结尾相邻的视频信号承载线中。定时发生器和接口从视频输出线中的同步检测器和视频电平检测器接收信号，并由微控制器控制。微控制器和定时发生器和接口控制同步信号插入装置，代码信号插入装置，重复同步信号插入装置和重复码信号插入装置。

5. 发明授权

US6008867A Apparatus for control of multiplexed video system 失效
标题翻译：复用视频系统控制装置
公开(公告)号：US6008867A
公开(公告)日：1999-12-28
申请号：US702913
申请日：1996-08-26
申请人： Alan Neal Cooper , David William Bauerle , Matthew John Fritz
发明人： Alan Neal Cooper , David William Bauerle , Matthew John Fritz
IPC分类号： H04N5/268 , H04N7/18
CPC分类号： H04N7/181 , H04N5/268
摘要： A display and control module sends synchronization signals and camera display codes to a loop multiplexer module and a home run multiplexer module. The loop multiplexer module has a plurality of cameras coupled to a loop multiplexer unit. The loop multiplexer unit controls the synchronization and selection of video from the cameras for sending to the display and control module. The home run multiplexer includes a home run multiplexer unit coupled to a plurality of coaxial cables, each coaxial cable having at least one video camera thereon. The home run multiplexer unit receives the synchronization and control signals from the display and control module and uses those signals for synchronizing and selecting video images from one of the plurality of cameras for sending to the display and control module. The display and control module uses the video signals from the loop multiplexer module and the home run multiplexer module to display on a display.
摘要翻译：显示和控制模块将同步信号和摄像机显示代码发送到环路多路复用器模块和家庭多路复用器模块。环路多路复用器模块具有耦合到环路多路复用器单元的多个摄像机。环路复用器单元控制来自摄像机的视频的同步和选择，以发送到显示器和控制模块。本地多路复用器包括耦合到多个同轴电缆的本地运行多路复用器单元，每个同轴电缆在其上具有至少一个摄像机。本地运行多路复用器单元从显示和控制模块接收同步和控制信号，并使用这些信号来同步和选择来自多个摄像机之一的视频图像来发送到显示和控制模块。显示和控制模块使用来自环路复用器模块和本地运行多路复用器模块的视频信号在显示器上显示。

6. 发明授权

US08879730B2 System and method for bit stream compatible local link encryption 有权
标题翻译：用于比特流兼容的本地链路加密的系统和方法
公开(公告)号：US08879730B2
公开(公告)日：2014-11-04
申请号：US11221247
申请日：2005-09-06
申请人： Bradley William Walker , Matthew John Fritz , Reiner Michael Doetzkies
发明人： Bradley William Walker , Matthew John Fritz , Reiner Michael Doetzkies
IPC分类号： H04N7/167 , H04N21/41 , H04N21/4367
CPC分类号： H04N21/4122 , H04N7/1675 , H04N21/4367
摘要： In accordance with the teachings of the present invention, a system and method for bit stream compatible local link encryption are provided. In particular embodiments of the present invention, the method includes generating a random number stream using an active line count of a frame of video as an input to a first random number generator in a playback server; encrypting data at the playback server based upon a first deterministic mapping between the first random number stream and the data, wherein the first deterministic mapping prevents the generation of prohibited codes; transporting the encrypted data from the playback server to a digital video projector; generating a second random number stream using the active line count of the frame of video as an input to a second random number generator in the digital video projector; and decrypting the encrypted data at the digital video projector based upon a second deterministic mapping between the second random number stream and the encrypted data.
摘要翻译：根据本发明的教导，提供了一种用于比特流兼容的本地链路加密的系统和方法。在本发明的特定实施例中，该方法包括使用视频帧的有效行计数作为播放服务器中的第一随机数发生器的输入来生成随机数流; 基于所述第一随机数字流和所述数据之间的第一确定性映射，在所述播放服务器处加密数据，其中所述第一确定性映射防止产生被禁止的代码; 将加密数据从播放服务器传送到数字视频投影仪; 使用所述视频帧的有效行数作为数字视频投影仪中的第二随机数发生器的输入产生第二随机数流; 以及基于所述第二随机数字流和所述加密数据之间的第二确定性映射来在所述数字视频投影仪处解密所述加密数据。

7. 发明授权

US08724023B2 System and method for transporting an ancillary data packet in the active area of a video stream 有权
标题翻译：用于在视频流的活动区域中传送辅助数据分组的系统和方法
公开(公告)号：US08724023B2
公开(公告)日：2014-05-13
申请号：US11221086
申请日：2005-09-06
申请人： Bradley William Walker , Matthew John Fritz
发明人： Bradley William Walker , Matthew John Fritz
IPC分类号： H04N7/167 , H04N7/00
CPC分类号： H04N21/4122 , H04N7/1675 , H04N21/4367 , H04N21/4405 , H04N21/4408
摘要： In accordance with the teachings of the present invention, a system and method for transporting an ancillary data packet in the active area of a video stream are provided. In particular embodiments of the present invention, the method includes coupling a playback server and a digital video projector with a DVI link; placing an ancillary data packet of link encryption metadata in a false line of video in an active area of a frame of video at the playback server, a remainder of the active area comprising true lines of video; transmitting the ancillary data packet from the playback server to a digital video projector through the DVI link; extracting the ancillary data packet from the frame of video at the digital video projector; and displaying the remainder of the active area of the frame of video at the digital video projector.
摘要翻译：根据本发明的教导，提供了一种用于在视频流的有效区域中传送辅助数据分组的系统和方法。在本发明的特定实施例中，该方法包括：使用DVI链接耦合回放服务器和数字视频投影仪; 将链路加密元数据的辅助数据分组放置在重放服务器上的视频帧的活动区域中的虚拟视频行中，其余的有效区域包括真实的视频行; 通过DVI链路将辅助数据包从播放服务器发送到数字视频投影仪; 从数字视频投影机的视频帧中提取辅助数据包; 并且在数字视频投影仪上显示视频帧的有效区域的剩余部分。

8. 发明授权

US07734044B2 Method and apparatus for synchronous stream cipher encryption with reserved codes 有权
标题翻译：用保留码同步流密码加密的方法和装置
公开(公告)号：US07734044B2
公开(公告)日：2010-06-08
申请号：US11360138
申请日：2006-02-23
申请人： Matthew John Fritz
发明人： Matthew John Fritz
IPC分类号： H04L9/18 , H04L9/20 , H04L9/22 , H04L9/00
CPC分类号： H04L29/06027 , H04L9/0662 , H04L65/607 , H04L2209/34
摘要： A method and apparatus for a signal encryption device constructed to perform synchronous stream cipher encryption for a sequence of input words with restricted codes. The encryption device includes a keystream generator for producing a sequence of pseudorandom words from a key, and an adder that is used to sum the output of the keystream generator and the input words. A lookup table of size substantially twice the number of possible input words provides encrypted codes excluding restricted codes from the summed signal. A signal encryption and decryption system is constructed by including a second keystream generator for producing a second sequence of pseudorandom words from the key, and a second adder to produce a second summed signal from the output of the second keystream generator and the encrypted codes. A corresponding lookup table provides decrypted codes excluding restricted codes from the second summed signal.
摘要翻译：一种信号加密装置的方法和装置，被构造成对具有受限制码的输入字序列执行同步流密码加密。加密装置包括密钥流生成器，用于从密钥产生一系列伪随机字，以及加法器，用于对密钥流生成器和输入字的输出求和。大小是可能的输入字的数量的两倍的查找表提供从加和信号中排除受限制代码的加密代码。信号加密和解密系统通过包括第二密钥流生成器来构造，该第二密钥流生成器用于从密钥产生伪随机字的第二序列，以及第二加法器，用于从第二密钥流生成器的输出和加密代码产生第二加法信号。对应的查找表提供从第二求和信号中排除受限制码的解密码。

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