Display operation with inserted block clears
    41.
    发明授权
    Display operation with inserted block clears 有权
    显示操作插入块清除

    公开(公告)号:US06778155B2

    公开(公告)日:2004-08-17

    申请号:US09918837

    申请日:2001-07-31

    Abstract: An SLM PWM clocking method, called “jog clear,” for generating short bit periods where block data clears (74) are inserted between block data loads (72, 76) within a frame refresh period. The method significantly reduces the short bit duration that requires use of the earlier reset-release method and it eliminates undesirable artifacts present in these earlier SLM clocking methods.

    Abstract translation: 用于产生块数据清除(74)的短位周期的SLM PWM时钟方法称为“点动清除”,其在帧刷新周期内的块数据加载(72,76)之间插入。 该方法显着减少了需要使用早期复位释放方法的短位持续时间,并且消除了这些较早的SLM计时方法中存在的不期望的伪像。

    Constant light disable for spatial light modulator
    42.
    发明授权
    Constant light disable for spatial light modulator 有权
    空间光调制器的恒定光禁止

    公开(公告)号:US06683290B2

    公开(公告)日:2004-01-27

    申请号:US10033332

    申请日:2001-12-28

    Abstract: A method and system of detecting whether the intensity of light incident a spatial light modulator varies periodically. One embodiment provides a method of operating a spatial light modulator, the method comprising: determining a peak level of light incident the modulator over a period of time; setting a threshold level equal to a fraction of the peak level; monitoring a current level of light incident the modulator; comparing the current level of light and the threshold level; and disabling the modulator based on the comparison. Another embodiment provides a modulator array. The modulator comprises: a photosensitive circuit for outputting a light intensity signal representative of a level of light incident the photosensitive circuit; a threshold detection circuit 400 receiving the light intensity signal 402 and outputting an under threshold signal 408 indicative of whether the intensity signal is less than a threshold level; and a duty cycle detection circuit 410 for monitoring the under threshold signal 408 and outputting a disable signal 418 indicative of the duty cycle of the under threshold signal 408. The preceding abstract is submitted with the understanding that it only will be used to assist in determining, from a cursory inspection, the nature and gist of the technical disclosure as described in 37 C.F.R. §1.72(b). In no case should this abstract be used for interpreting the scope of any patent claims.

    Abstract translation: 检测入射到空间光调制器的光的强度是否周期性变化的方法和系统。 一个实施例提供了一种操作空间光调制器的方法,所述方法包括:确定在一段时间内入射到调制器的光的峰值电平; 设置等于峰值电平的一小部分的阈值电平; 监测当前调制器入射光的水平; 比较目前的光照水平和阈值水平; 并根据比较禁用调制器。 另一个实施例提供一种调制器阵列。 调制器包括:用于输出表示入射到光敏电路的光的电平的光强度信号的光敏电路; 阈值检测电路400接收光强度信号402并输出指示强度信号是否小于阈值电平的阈值信号408; 以及占空比检测电路410,用于监视欠阈值信号408并输出指示低于阈值信号408的占空比的禁用信号418.前面的摘要被提交,理解是它仅用于协助确定 从粗略检查,37 CFR中描述的技术披露的性质和要点 §1.72(b)。 在任何情况下,本摘要不得用于解释任何专利权利要求的范围。

    Displaying video data on a spatial light modulator
    43.
    发明授权
    Displaying video data on a spatial light modulator 失效
    在空间光调制器上显示视频数据

    公开(公告)号:US06300924B1

    公开(公告)日:2001-10-09

    申请号:US08561223

    申请日:1995-11-21

    Abstract: An SLM-based video receiver (10) receives a video input of some standardized format at a signal interface unit (11) and passes the input to a processor (12). The processor (12) performs analog-to-digital conversion if the pixel data is analog and also performs other enhancements to prepare the pixel data for loading into a video memory (14). The pixel data from the processor (12), representing a field of pixel data, is stored into the memory (14) for loading into rows of pixel elements of a spatial light modulator (16). The spatial light modulator (16) receives the pixel data in rows and each individual pixel element responds accordingly. The pixel elements of the spatial light modulator (16) emit light or reflect light from a source (18) and generate a video frame for display on a screen (20). By exploiting the addressing functions of the spatial light modulator (16), the SLM-based video receiver (10) displays a video frame using a field of pixel data.

    Abstract translation: 基于SLM的视频接收器(10)在信号接口单元(11)处接收一些标准格式的视频输入,并将输入传递给处理器(12)。 如果像素数据是模拟的,则处理器(12)执行模数转换,并且还执行其他增强以准备用于加载到视频存储器(14)中的像素数据。 来自处理器(12)的表示像素数据的像素数据被存储到存储器(14)中,用于加载到空间光调制器(16)的像素元件行中。 空间光调制器(16)以行的形式接收像素数据,并且各个像素元件相应地进行响应。 空间光调制器(16)的像素元件发光或反射来自源(18)的光,并产生用于在屏幕(20)上显示的视频帧。 通过利用空间光调制器(16)的寻址功能,基于SLM的视频接收器(10)使用像素数据的场来显示视频帧。

    Generating load/reset sequences for spatial light modulator
    44.
    发明授权
    Generating load/reset sequences for spatial light modulator 失效
    为空间光调制器生成负载/复位序列

    公开(公告)号:US6008785A

    公开(公告)日:1999-12-28

    申请号:US975377

    申请日:1997-11-20

    Abstract: A method of automatically generating a load/reset sequence for a display system having a spatial light modulator whose display elements that are loaded with data and reset between loads (FIG. 7). Bit-planes of data are classified according to their display times as normal, short, or reset-release (FIG. 5). Extra time of normal bit-planes is calculated (FIG. 5). The display times of normal bit-planes are adjusted by subtracting or adding extra time, such that any normal bit-plane displayed before a short or reset-release bit-plane includes sufficient extra time to allow for loading the short or reset-release bit-plane (FIG. 7). Also, reset conflicts are detected and avoided (FIGS. 7, 8, 9A and 9B).

    Abstract translation: 一种自动生成具有空间光调制器的显示系统的装载/复位序列的方法,所述空间光调制器的显示元件被加载数据并在负载之间复位(图7)。 数据的位平面根据其显示时间被分类为正常,短路或复位释放(图5)。 计算正常位平面的额外时间(图5)。 正常位平面的显示时间通过减去或增加额外时间来调整,使得在短或复位释放位平面之前显示的任何正常位平面包括足够的额外时间,以允许加载短路或复位释放位 (图7)。 此外,检测并避免了复位冲突(图7,8,19和9B)。

    Bit-splitting for pulse width modulated spatial light modulator
    45.
    发明授权
    Bit-splitting for pulse width modulated spatial light modulator 失效
    用于脉冲宽度调制的空间光调制器的分位

    公开(公告)号:US5969710A

    公开(公告)日:1999-10-19

    申请号:US706098

    申请日:1996-08-30

    Abstract: A method of implementing pulse-width modulation in a display system (10, 20) that uses a spatial light modulator (SLM) (15) Each frame of data is divided into bit-planes, each bit-plane having one bit of data for each pixel of the SLM and representing a bit weight of the intensity value to be displayed by the pixels. Each bit-plane has a display time corresponding to a portion of the frame period, with bit-planes of more significant bits having longer portions. Then, the display times for one or more of the more significant bits are segmented so that the data for those bits can be displayed in segments rather than for a continuous time. (FIG. 3A). The segments are distributed throughout the frame period to reduce visual artifacts. (FIG. 3B).

    Abstract translation: 一种在使用空间光调制器(SLM)的显示系统(10,20)中实现脉冲宽度调制的方法(15)每帧数据被分成位平面,每个位平面具有一位数据,用于 SLM的每个像素,并且表示由像素显示的强度值的位权重。 每个位平面具有对应于帧周期的一部分的显示时间,其中更高有效位的位平面具有较长部分。 然后,分割一个或多个更高有效位的显示时间,使得可以以段而不是连续时间显示这些位的数据。 (图3A)。 片段在整个帧期间分布,以减少视觉伪像。 (图3B)。

    Time expansion of pulse width modulation sequences by clock dropping
    46.
    发明授权
    Time expansion of pulse width modulation sequences by clock dropping 失效
    脉冲宽度调制序列随时间延长的时间扩展

    公开(公告)号:US5912712A

    公开(公告)日:1999-06-15

    申请号:US76335

    申请日:1998-05-11

    CPC classification number: G09G3/2018 G09G5/18 G09G2340/0435

    Abstract: A method for expanding pulse width modulation sequences that control a display system to adapt to varying video frame times. A minimal amount of extra circuitry (10) is provided that regulates a sequencer (26). After calculating the appropriate expansion factor needed to stretch a base sequence, the system control circuit (22) sends that information to the circuitry (10). The circuitry (10) includes a counter (14) that repetitively counts down a number of clock cycles and causes the clock to drop a cycle. This dropping of clock cycles causes the sequence time to be expanded, as it takes the system longer to reach the necessary number of clock cycles that determine a sequence. Several base pulse width modulation sequences could be stored in memory, each of which can be used for a range of frame times, eliminating the need for one sequence for every possible variation in the frame time.

    Abstract translation: 一种用于扩展控制显示系统以适应变化的视频帧时间的脉冲宽度调制序列的方法。 提供了调节定序器(26)的最小量的额外电路(10)。 在计算拉伸基本序列所需的适当扩展因子之后,系统控制电路(22)将该信息发送到电路(10)。 电路(10)包括计数器(14),该计数器重复地对多个时钟周期进行计数,并使时钟下降一个周期。 时钟周期的下降导致序列时间的扩展,因为系统需要更长的时间来达到确定序列的必要数量的时钟周期。 几个基本脉冲宽度调制序列可以存储在存储器中,每个基本脉冲宽度调制序列可以用于一定范围的帧时间,消除了帧时间中每个可能变化的一个序列的需要。

    Error diffusion filter for DMD display
    47.
    发明授权
    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:US5726718A

    公开(公告)日:1998-03-10

    申请号:US315457

    申请日:1994-09-30

    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.

    Abstract translation: DMD显示系统包括用于将8位的光栅扫描的伽马校正视频数据转换为具有8个最高有效位(msb)和4个最低有效位(lsb)的12位反相伽马数据的反相伽马查找表(50) 。 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,并且将一半的lsb添加到 下一个垂直像素一行长度延迟。

    Method for reducing temporal artifacts in digital video systems
    48.
    发明授权
    Method for reducing temporal artifacts in digital video systems 失效
    减少数字视频系统中时间伪影的方法

    公开(公告)号:US5619228A

    公开(公告)日:1997-04-08

    申请号:US658783

    申请日:1996-06-05

    Abstract: A method and system for improved display of digital video data. The data is arranged into bit plies according to the binary weight of each bit per pixel. The bit planes are then translated into non-binary weighted bit planes by bit translation circuitry (22). These non-binary bit planes are transmitted to the activation circuitry of a spatial light modulator array (30), such that each non-binary bit is displayed at symmetrical times around at least one predetermined point within a video frame time, eliminating visual artifacts associated with binary pulse-width modulation.

    Abstract translation: 一种用于改进数字视频数据显示的方法和系统。 根据每像素每位的二进制权重将数据排列成位层。 然后,位平面由位转换电路(22)转换成非二进制加权位平面。 这些非二进制位平面被发送到空间光调制器阵列(30)的激活电路,使得每个非二进制位在视频帧时间内围绕至少一个预定点的对称时间显示,从而消除了相关联的视觉伪像 采用二进制脉宽调制。

    Method and system for accentuating intense white display areas in
sequential DMD video systems
    49.
    发明授权
    Method and system for accentuating intense white display areas in sequential DMD video systems 失效
    在连续DMD视频系统中强调强烈的白色显示区域的方法和系统

    公开(公告)号:US5592188A

    公开(公告)日:1997-01-07

    申请号:US368448

    申请日:1995-01-04

    Abstract: A method and system for accentuating intense white display areas in sequential DMD video systems includes generating a special signal for each pixel that indicates whether to boost the intensity of that pixel in all colors. The method further includes enabling the mirrors to be turned on during times of color boundary of the color wheel such that DMD with mirrors receives different mixes of color light that are integrated together to produce intense white. The system may include degamma lookup tables for each color. The degamma lookup tables are augmented when the special signal is generated.

    Abstract translation: 用于在连续DMD视频系统中强调强烈的白色显示区域的方法和系统包括为指示是否提高所有颜色的该像素的强度的每个像素生成特殊信号。 该方法还包括使得在色轮的颜色边界的时间期间可以打开反射镜,使得具有反射镜的DMD接收不同颜色的混合物,这些混合物被集成在一起以产生强烈的白色。 该系统可以包括针对每种颜色的色度查找表。 当产生特殊信号时,增强查询表。

    Graphics subsystem for digital television
    50.
    发明授权
    Graphics subsystem for digital television 失效
    数字电视图形子系统

    公开(公告)号:US5519450A

    公开(公告)日:1996-05-21

    申请号:US339098

    申请日:1994-11-14

    CPC classification number: H04N9/30 G09G5/02 H04N5/7458 G09G2340/10 G09G3/346

    Abstract: An SLM-based digital display system (10) having a graphics display subsystem (13 and 18) for closed captioning, on-screen displays, and other graphics images that are overlaid on the video image. The graphics display subsystem (13 and 18) has a graphics processor (21) that prepares the graphics data, which is inserted into the video data path after video data processing and prior to a look-up table unit (27). A select logic unit (24) provides a control signal to a multiplexer (26) that selects between video data and graphics data for input to the look-up table unit (27). The look-up table unit (27) performs its mapping according to the type of data received, such as by linearizing video data or palletizing graphics data.

    Abstract translation: 一种基于SLM的数字显示系统(10),具有用于隐藏字幕的图形显示子系统(13和18),屏幕显示和覆盖在视频图像上的其他图形图像。 图形显示子系统(13和18)具有图形处理器(21),其准备图形数据,其在视频数据处理之后并在查找表单元(27)之前被插入到视频数据路径中。 选择逻辑单元(24)向多路复用器(26)提供控制信号,多路复用器选择视频数据和图形数据,以输入到查找表单元(27)。 查找表单元(27)根据所接收的数据的类型来执行其映射,例如通过线性化视频数据或码垛图形数据。

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