Special features for digital television
    1.
    发明授权
    Special features for digital television 失效
    数字电视的特色功能

    公开(公告)号:US5999227A

    公开(公告)日:1999-12-07

    申请号:US876112

    申请日:1997-06-13

    CPC分类号: H04N5/45 H04N7/012

    摘要: A system for handling special television video features digitally. The system receives incoming broadcast video into a switch (106). The switch allows the viewer to select a main channel and at least one auxiliary channel for viewing as a special feature, if the viewer does not want to view only the main channel for that particular special feature. The main video channel data is processed by a scan converter (216) to convert it from interlaced to progressive scan. A logic device (212) handles the auxiliary channel data to format it into the selected special feature and inputs that data to the scan converter (216) such that the special feature appears in the proper place relative to the main channel image.

    摘要翻译: 数字处理特殊电视录像功能的系统。 系统将进入的广播视频接收到交换机(106)中。 如果观看者不想仅查看该特定特征的主频道,则该开关允许观看者选择主频道和至少一个用于观看的辅助频道作为特殊功能。 主视频通道数据由扫描转换器(216)处理,以将其从隔行扫描转换成逐行扫描。 逻辑设备(212)处理辅助通道数据以将其格式化成所选择的特殊功能,并将该数据输入到扫描转换器(216),使得特殊功能出现在相对于主通道图像的正确位置。

    Timing circuit for video display having a spatial light modulator
    2.
    发明授权
    Timing circuit for video display having a spatial light modulator 失效
    具有空间光调制器的视频显示定时电路

    公开(公告)号:US5528317A

    公开(公告)日:1996-06-18

    申请号:US188266

    申请日:1994-01-27

    IPC分类号: H04N9/30 H04N9/12

    CPC分类号: H04N9/30

    摘要: A method and apparatus for synchronizing display timing in a digital television system with a pixel addressable display having a color wheel is disclosed. The display timing circuit 22 includes phase comparator 40, for comparing the phase of a wheel index signal generated by a color wheel 20 with the phase of a frame synchronization signal indicating that a complete frame is ready to be displayed. Display timing circuit 22 further comprises a color wheel synchronization generator 42 which generates a color wheel synchronization signal in response to a phase difference value produced by phase comparator 40. The color wheel synchronization signal is used to increase, decrease, or maintain the speed of color wheel 20 to achieve a known phase relationship between the frame synchronization signal and the wheel index signal. Display timing circuit 22 further comprises a clock generator applicable to generate a display master clock signal having a known frequency relation to the wheel index signal.

    摘要翻译: 公开了一种用于将数字电视系统中的显示定时与具有色轮的像素可寻址显示器同步的方法和装置。 显示定时电路22包括相位比较器40,用于将由色轮20产生的车轮指标信号的相位与指示完整帧准备显示的帧同步信号的相位进行比较。 显示定时电路22还包括色轮同步发生器42,其根据由相位比较器40产生的相位差产生色轮同步信号。色轮同步信号用于增加,降低或维持颜色速度 以实现帧同步信号和车轮索引信号之间已知的相位关系。 显示定时电路22还包括时钟发生器,其适用于产生与车轮指标信号具有已知频率关系的显示主时钟信号。

    Color phase control for projection display using spatial light modulator
    4.
    发明授权
    Color phase control for projection display using spatial light modulator 失效
    使用空间光调制器进行投影显示的彩色相位控制

    公开(公告)号:US5365283A

    公开(公告)日:1994-11-15

    申请号:US93537

    申请日:1993-07-19

    IPC分类号: H04N9/31 H04N9/14 H04N9/47

    摘要: A SLM-based projection display system (10) samples and processes video data for delivery to a spatial light modulator (SLM) (13c), and uses a color wheel (14a) to color the SLM-generated images. A frame memory (13b) provides data to the SLM (13c) and is managed so that, if the phase of the incoming video signal changes, a desired phase relationship between the color wheel position and the data available to the SLM (13c) can be maintained. Also, a motor control unit (15a) uses a horizontal sync signal to generate a drive signal for the color wheel motor (16a), which limits the transient time during phase-changing events, and which provides a means for adjusting the phase of the drive signal.

    摘要翻译: 基于SLM的投影显示系统(10)对用于传送到空间光调制器(SLM)(13c)的视频数据进行采样和处理,并使用色轮(14a)对SLM生成的图像进行着色。 帧存储器(13b)向SLM(13c)提供数据并被管理,使得如果输入视频信号的相位改变,则色轮位置和可用于SLM(13c)的数据之间的期望的相位关系可以 保持。 此外,电动机控制单元(15a)使用水平同步信号来生成用于色轮电动机(16a)的驱动信号,这限制了相变事件期间的瞬时时间,并且其提供了用于调整 驱动信号。

    Sampling analog video signal for secondary images
    5.
    发明授权
    Sampling analog video signal for secondary images 失效
    对二次图像采样模拟视频信号

    公开(公告)号:US5838385A

    公开(公告)日:1998-11-17

    申请号:US706367

    申请日:1996-08-30

    IPC分类号: H04N5/45 H04N9/64

    CPC分类号: H04N5/45 H04N7/012 H04N9/641

    摘要: A data converter (13) for providing data for secondary images in a video display system (10). One embodiment (FIG. 2) provides data for a staggered pixel array, by using an A/D converter (23) to sample the data at a rate of 2/n(h) times the sample rate of the main image, where 1/n(h) is the horizontal scaling factor. A multiplexer (24) selects between two different sample patterns. Another embodiment (FIG. 3) provides data for progressively scanned secondary images by selecting 2/n(v) times the number of lines per input field, where 1/n(v) is the vertical scaling factor.

    摘要翻译: 一种用于在视频显示系统(10)中提供二次图像数据的数据转换器(13)。 一个实施例(图2)通过使用A / D转换器(23)以主要图像的采样率的2 / n(h)倍的速率对数据进行采样来提供交错像素阵列的数据,其中1 / n(h)是水平缩放因子。 多路复用器(24)在两个不同的样本图案之间进行选择。 另一个实施例(图3)通过选择每个输入字段的行数2 / n(v)次来提供逐渐扫描的二次图像的数据,其中1 / n(v)是垂直缩放因子。

    Pulse width modulation for spatial light modulator with split reset
addressing
    7.
    发明授权
    Pulse width modulation for spatial light modulator with split reset addressing 失效
    具有分离复位寻址的空间光调制器的脉宽调制

    公开(公告)号:US5497172A

    公开(公告)日:1996-03-05

    申请号:US259402

    申请日:1994-06-13

    摘要: A method of implementing pulse-width modulated image display systems (10, 20) with a spatial light modulator (SLM) (15) configured for split-reset addressing. Display frame periods are divided into time slices. Each frame of data is divided into bit-planes, each bit-plane having one bit of data for each pixel element and representing a bit weight of the intensity value to be displayed by that pixel element. Each bit-plane has a display time corresponding to a number of time slices, with bit-planes of higher bit weights being displayed for more time slices. The bit-planes are further formatted into reset groups, each reset group corresponding to a reset group of the SLM (15). The display times for reset groups of more significant bits are segmented so that the data can be displayed in segments rather than for a continuous time. During loading, segments of corresponding bit-planes are temporally aligned from one reset group to the next. The display times for less significant bits are not segmented but are temporally aligned to the extent possible without loading conflicts.

    摘要翻译: 一种用于分配复位寻址的空间光调制器(SLM)(15)实现脉冲宽度调制图像显示系统(10,20)的方法。 显示帧周期分为时间片。 每个数据帧被分成位平面,每个位平面具有每个像素元素的一位数据,并且表示要由该像素元素显示的强度值的位权重。 每个位平面具有对应于多个时间片的显示时间,其中更高位权重的位平面被显示用于更多的时间片。 位平面被进一步格式化为复位组,每个复位组对应于SLM的复位组(15)。 更高有效位的复位组的显示时间被分段,以便可以以段而不是连续显示数据。 在加载期间,相应位平面的段在时间上从一个复位组到下一个复位组。 较低有效位的显示时间不分段,但在不加载冲突的情况下在时间上对齐的程度。

    Color phase control for projection display using spatial light modulator
    9.
    发明授权
    Color phase control for projection display using spatial light modulator 失效
    使用空间光调制器进行投影显示的彩色相位控制

    公开(公告)号:US5657099A

    公开(公告)日:1997-08-12

    申请号:US510027

    申请日:1995-08-01

    IPC分类号: H04N9/31 H04N9/12

    摘要: A SLM-based projection display system (10) samples and processes video data for delivery to a spatial light modulator (SLM) (13c), and uses a color wheel (14a) to color the SLM-generated images. A frame memory (13b) provides data to the SLM (13c) and is managed so that, if the phase of the incoming video signal changes, a desired phase relationship between the color wheel position and the data available to the SLM (13c) can be maintained. Also, a motor control unit (15a) uses a horizontal sync signal to generate a drive signal for the color wheel motor (16a), which limits the transient time during phase-changing events, and which provides a means for adjusting the phase of the drive signal.

    摘要翻译: 基于SLM的投影显示系统(10)对用于传送到空间光调制器(SLM)(13c)的视频数据进行采样和处理,并使用色轮(14a)对SLM生成的图像进行着色。 帧存储器(13b)向SLM(13c)提供数据并被管理,使得如果输入视频信号的相位改变,则色轮位置和可用于SLM(13c)的数据之间的期望的相位关系可以 保持。 此外,电动机控制单元(15a)使用水平同步信号来生成用于色轮电动机(16a)的驱动信号,这限制了相变事件期间的瞬时时间,并且其提供了用于调整 驱动信号。