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    Improvements in display systems
    11.
    发明公开
    Improvements in display systems 失效
    Verbesserungen bei Anzeigevorrichtungen

    公开(公告)号：EP0762737A2

    公开(公告)日：1997-03-12

    申请号：EP96113473.1

    申请日：1996-08-22

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Clatanoff, Todd A., ,  Markandey, Vishal ,  Ohara, Kazuhiro

    IPC: H04N5/14

    CPC classification number: H04N5/14 ,  G09G3/20 ,  G09G2340/0414 ,  H04N5/46 ,  H04N5/74 ,  H04N7/012

    Abstract: A processing system (10) for video data. The system uses two scan line video processors. The first processor (12) performs a first set of predetermined tasks. The second processor (20) performs a second set of predetermined tasks. The division of tasks between the two processors (12,20) allow optimal utilization of the processors' limited instruction space, any combination of processing tasks is allowed, so long as one of the processors works at near full instruction capacity.

    Abstract translation: 一种用于视频数据的处理系统（10）。 该系统使用两个扫描线视频处理器。 第一处理器（12）执行第一组预定任务。 第二处理器（20）执行第二组预定任务。 两个处理器（12,20）之间的任务划分允许处理器有限指令空间的最佳利用，只要其中一个处理器工作在接近全指令容量，就允许处理任务的任何组合。

    Improvements relating to a progressive scan television
    12.
    发明公开
    Improvements relating to a progressive scan television 失效
    Verbesserungen一个einemZeilenfolgeabtastungsfernsehempfänger

    公开(公告)号：EP0740468A1

    公开(公告)日：1996-10-30

    申请号：EP96106768.3

    申请日：1996-04-29

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Markandey, Vishal ,  Clatanoff, Todd A. ,  Ohara, Kazuhiro ,  Takeda, Akira

    IPC: H04N5/44 ,  H04N9/31

    CPC classification number: H04N5/7458 ,  H04N7/012

    Abstract: A television system (10) with interlaced to progressive scan conversion. The system receives interlaced television signals then converts them to progressively scanned data using either field differencing, enhanced field differencing, frame differencing or other temporal processing depending upon which implementation is used. The implementation used depends upon which configuration of the system (10) was purchased, and can be changed with an upgrade to one of the more expensive implementations.

    Abstract translation: 一种具有逐行扫描转换的电视系统（10）。 系统接收隔行扫描的电视信号，然后根据使用的实现，使用场差分，增强场差分，帧差分或其他时间处理将它们转换成逐行扫描的数据。 所使用的实现取决于购买了系统（10）的哪个配置，并且可以通过升级到更昂贵的实现之一来更改。

    Improvements in or relating to image display systems
    13.
    发明公开
    Improvements in or relating to image display systems 失效
    维尔法赫森zum Reduzieren von Artefakten在Bildanzeiges系

    公开(公告)号：EP0740283A2

    公开(公告)日：1996-10-30

    申请号：EP96106617.2

    申请日：1996-04-26

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Markandey, Vishal ,  Gove, Robert J.

    IPC: G09G3/34

    CPC classification number: G09G3/346 ,  G09G3/2022 ,  G09G2310/0235 ,  G09G2320/0266

    Abstract: A method of reducing artifacts in SLM-based display systems (10, 20), whose images are based on data displayed by bit-weight for pulse-width modulated intensity levels. The method can be used with a multiple SLM system (20), which concurrently displays images of different colors, or with a single SLM system (10), which generates differently colored images sequentially during each frame period. For a multiple SLM system (20), the method is used with SLMs (14) that are memory-multiplexed, having "reset groups" that are loaded and displayed at different times. Corresponding rows of the SLM(s)s are associated with different reset groups.

    Abstract translation: 一种减少基于SLM的显示系统（10,20）中的伪影的方法，其图像基于通过位权​​重显示脉冲宽度调制强度级别的数据。 该方法可以与同时显示不同颜色的图像的多个SLM系统（20）一起使用，或者与单个SLM系统（10）一起使用，其在每个帧周期期间依次生成不同颜色的图像。 对于多个SLM系统（20），该方法与存储器多路复用的SLM（14）一起使用，具有在不同时间加载和显示的“复位组”。 SLM的相应行与不同的重置组相关联。

    Error diffusion filter
    14.
    发明公开
    Error diffusion filter 失效
    过滤zur Fehler扩散

    公开(公告)号：EP0706165A1

    公开(公告)日：1996-04-10

    申请号：EP95115269.3

    申请日：1995-09-27

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Markandey, Vishal ,  Pettitt, Gregory S.

    IPC: G09G3/34 ,  G02B26/08

    CPC classification number: G09G3/346 ,  G02B26/0841 ,  G09G3/2059 ,  G09G2320/0276 ,  H04N9/3114 ,  H04N9/3182

    Abstract: An improved error diffusion filter for a DMD display includes both an inverse gamma LUT (Look-up Table) (51) and an Error LUT (Look-up Table) (82), both responsive to the raster scan red, green, or blue video data for when the video data calls for an intensity level different from the achievable level of a DMD device. The Error LUT (82) provides an error value for that difference. The error is distributed to neighboring DMD devices.

    Abstract translation: 用于DMD显示器的改进的误差扩散滤波器包括反伽马LUT（查找表）（51）和错误LUT（查找表）（82），两者都响应于光栅扫描红色，绿色或蓝色 用于当视频数据要求与DMD设备的可实现水平不同的强度水平时的视频数据。 错误LUT（82）提供该差异的错误值。 该错误分发到相邻的DMD设备。

    Error diffusion filter for DMD display
    15.
    发明公开
    Error diffusion filter for DMD display 失效
    用于DMD显示的误差扩散滤波器

    公开(公告)号：EP0704835A2

    公开(公告)日：1996-04-03

    申请号：EP95114890.7

    申请日：1995-09-21

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Doherty, Donald B. ,  Pettitt, Gregory ,  Markandey, Vishal

    IPC: G09G3/34

    CPC classification number: G09G3/346 ,  G09G3/2007 ,  G09G3/2022 ,  G09G3/2059 ,  G09G2330/10 ,  H04N5/7441

    Abstract: A DMD display system includes an inverse gamma look-up-table (50) for converting raster scanned, gamma corrected video data of 8 bits to 12 bits inverse gamma data with 8 most significant bits (msb) and 4 least significant bits (lsb). The 8 msb are coupled to the micromirror of the DMD display (10) and the four lsb are delayed and halved such that one half of the lsb is added to the next pixel in the horizontal scan and one-half of the lsb is added to the next vertical pixel one line length delayed due to degamma. For each input intensity in, the output intensity in will be displayed on the DMD device. If the degamma was perfect and there was no lack of bits, the value displayed in the DMD would be some other value N1. We compute the difference between N and N1 and distribute this difference (error) among the neighboring pixels. The error can be distributed among the neighbors in various ways. One implementation is shown in Fig. 4. A further advantage of the present invention is that the defect compensation can be performed as part of this algorithm. For this, the DMD coordinates of defective pixels need to be known and the error diffusion needs to be modified to account for the fact that at those locations the pixel displays either bright (stuck ON), dark (stuck OFF) or neutral (flat pixel).

    Abstract translation: DMD显示系统包括反向伽马查找表（50），用于将具有8个最高有效位（msb）和4个最低有效位（lsb）的8位伽马校正视频数据转换为12位反伽马数据， 。 8msb耦合到DMD显示器（10）的微镜，并且四个lsb被延迟和减半，使得lsb的一半被添加到水平扫描中的下一个像素，并且lsb的一半被添加到 下一个垂直像素由于degamma而延迟一行的长度。 对于每个输入强度，输出强度将显示在DMD设备上。 如果去伽玛是完美的并且没有缺位，则DMD中显示的值将是其他值N1。 我们计算N和N1之间的差值，并在相邻像素之间分配这个差值（误差）。 错误可以以各种方式在邻居之间分配。 图4中示出了一种实现方式。本发明的另一个优点是缺陷补偿可以作为该算法的一部分来执行。 为此，需要知道有缺陷像素的DMD坐标，并且需要修改误差扩散以说明在这些位置像素显示明亮（卡住ON），暗（卡住OFF）或中性（平坦像素 ）。

    Method of increasing the brightness of a display system
    20.
    发明公开
    Method of increasing the brightness of a display system 有权
    提高显示系统亮度的方法

    公开(公告)号：EP0899710A3

    公开(公告)日：1999-06-02

    申请号：EP98202870.6

    申请日：1998-08-26

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Pettit, Gregory S. ,  Hewlett, Gregory J. ,  Markandey, Vishal

    IPC: G09G3/34

    CPC classification number: G09G3/2029 ,  G09G3/34 ,  G09G3/346 ,  G09G2310/0235 ,  G09G2310/061 ,  G09G2320/0626

    Abstract: A method of increasing the brightness of a pulse width modulation display system. Image bits are displayed during display periods having a non-binary relationship. The display period of an object bit 902 is set equal to a minimum data load time, and the display periods of all other bits are initially set to have a binary relationship with the object bit. The display periods of at least one non-object bit 904, 906, 908 are then reduced in order to reduce the total frame time to no more than the available useable frame time 910. Preferably, only the display periods of bit of significance greater than the object bit are reduced. The reduction of display periods is guided by Weber's law, in order to prevent the non-binary steps from being noticeable or objectionable to the viewer.

    Abstract translation: 一种提高脉宽调制显示系统亮度的方法。 图像位在具有非二元关系的显示期间显示。 对象位902的显示周期被设置为等于最小数据加载时间，并且所有其他位的显示周期最初被设置为与对象位具有二进制关系。 然后减少至少一个非对象位904,906,908的显示周期，以便将总帧时间减少到不超过可用可用帧时间910.优选地，只有显着位的显示周期大于 对象位被减少。 显示时间的缩短受韦伯定律的指导，以防止非二进制步骤对观察者引起注意或反感。

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