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114 条记录 (耗时 0.036 秒)

    Pre-processed information embedding system
    22.
    发明授权
    Pre-processed information embedding system 有权

    公开(公告)号：US06912315B1

    公开(公告)日：2005-06-28

    申请号：US09721015

    申请日：2000-11-22

    申请人： Douglas Wong ,  Chong U. Lee

    发明人： Douglas Wong ,  Chong U. Lee

    IPC分类号： G06F1/00 ,  G06F21/00 ,  G06K9/36 ,  H04N1/36 ,  H04N9/74

    CPC分类号： G06F21/10 ,  G06F2211/007 ,  G06F2221/0737

    摘要： Auxiliary information (150) representing binary or multi-level (M≧2) logical values is embedded into successive segments (110) of an audio, video or other data signal in response to a user request to download the data signal via an on-line distributor (350) on a computer network such as the Internet. To avoid unnecessary delays in providing the data signal to the user, the data signal is pre-processed to provide two sets or copies of data (230, 235). One set (230) of the data contains segments with an embedded binary “0”, while the other set (235) contains corresponding segments with an embedded binary “1”. Successive segments are selected from one of the two sets to provide a time-multiplexed composite data signal (230) that has the desired content, but with an embedded binary data sequence that identifies the user.

    Post-compression hidden data transport for video
    23.
    发明授权
    Post-compression hidden data transport for video 失效
    视频的压缩后隐藏数据传输

    公开(公告)号：US5901178A

    公开(公告)日：1999-05-04

    申请号：US912434

    申请日：1997-08-18

    申请人： Chong U. Lee ,  Kamran Moallemi ,  Jurg Hinderling

    发明人： Chong U. Lee ,  Kamran Moallemi ,  Jurg Hinderling

    IPC分类号： H04N7/30 ,  G06T1/00 ,  G10L19/00 ,  H04B1/66 ,  H04B1/707 ,  H04B14/04 ,  H04N7/08 ,  H04N7/081 ,  H04N7/24 ,  H04N21/235 ,  H04N21/2389 ,  H04N21/435 ,  H04B1/22

    CPC分类号： G06T1/0028 ,  G10L19/018 ,  H04B1/665 ,  H04B1/707 ,  H04N21/235 ,  H04N21/23892 ,  H04N21/435 ,  G06T2200/28 ,  G06T2201/0052 ,  H04B2201/70715

    摘要： Auxiliary data is carried substantially imperceptibly with video transform data in combined transform samples according to a visibility threshold. The auxiliary data provides a capability for a copy protect scheme or verification of television viewing activity. The video transform samples are extracted from a compressed packetized data stream and normalized if required. The auxiliary data modulates data carrier sequences such as pseudo-noise (PN) spread spectrum signals in different spatial frequencies to provide auxiliary data subband samples, which are in turn combined with the video transform samples in one or more spatial frequencies to provide combined subband samples. The auxiliary data subband samples may be also spectrally shaped according to the video transform samples to improve concealment. The combined transform samples are then multiplexed into the packetized data stream. Full decompression of the video transform samples is not required. In a decoder, the combined transform samples are demodulated to recover the auxiliary data signal.

    摘要翻译： 根据可见性阈值，组合变换样本中的视频变换数据基本上不可知地承载辅助数据。 辅助数据提供复制保护方案或验证电视观看活动的能力。 从压缩的分组化数据流中提取视频变换样本，并且如果需要则进行归一化。 辅助数据调制数据载波序列，例如不同空间频率的伪噪声（PN）扩展频谱信号，以提供辅助数据子带样本，这些样本又与一个或多个空间频率中的视频变换样本组合，以提供组合子带样本 。 辅助数据子带样本也可以根据视频变换样本进行光谱成形，以改善隐藏。 然后将组合的变换样本复用到分组化数据流中。 不需要视频转换样本的全面解压缩。 在解码器中，组合的变换样本被解调以恢复辅助数据信号。

    After image reducer
    24.
    发明授权
    After image reducer 失效
    图像缩小后

    公开(公告)号：US5689311A

    公开(公告)日：1997-11-18

    申请号：US528579

    申请日：1995-09-15

    申请人： Chong U. Lee

    发明人： Chong U. Lee

    IPC分类号： H04N5/21 ,  H04N5/213

    CPC分类号： H04N5/21

    摘要： A method and apparatus for reducing after images in motion video display. In the present invention, an intensity scaled image of a previous frame or set of frames is subtracted from the present frame before displaying the present frame. In the exemplary embodiment, the scaling factor is determined by measuring the intensity of the after image for the display device. In a preferred embodiment, the after image reduction system of the present invention takes into account the nonlinearities of the display device. That is the nonlinear relationship between the voltage applied to a display device and the intensity of the resulting display.

    摘要翻译： 一种用于减少运动视频显示后的图像的方法和装置。 在本发明中，在显示当前帧之前，从当前帧中减去前一帧或一组帧的强度缩放图像。 在示例性实施例中，通过测量显示装置的后置图像的强度来确定比例因子。 在优选实施例中，本发明的后图像缩小系统考虑了显示装置的非线性。 这是施加到显示装置的电压与所得显示器的强度之间的非线性关系。

    Adaptive block size image compression method and system
    25.
    发明授权
    Adaptive block size image compression method and system 失效
    自适应块大小图像压缩方法和系统

    公开(公告)号：US5452104A

    公开(公告)日：1995-09-19

    申请号：US102124

    申请日：1993-08-04

    申请人： Chong U. Lee

    发明人： Chong U. Lee

    IPC分类号： G06T9/40 ,  H04N7/26 ,  H04N7/30 ,  H04N1/415

    CPC分类号： H04N19/00 ,  G06T9/40 ,  H04N19/102 ,  H04N19/129 ,  H04N19/15 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/96 ,  H04N19/98 ,  H04N19/13 ,  H04N19/146 ,  H04N19/60 ,  H04N19/63 ,  H04N19/91

    摘要： In an adaptive block size image compression method and system for compressing image data, a respective method and system for further compressing the image data for transmission. Each block and corresponding sub-blocks of pixel data is subjected to a discrete cosine transform (DCT) operation. Varying levels of sub-blocks of resulting corresponding transform coefficients are selected for construction into a composite transform coefficient block corresponding to each input block of pixel data. The selection of transform coefficient block size for the composite block is determined by a comparison process between transform block and sub-block coding efficiency. The composite block is variable length coded to further reduce bit count in the compressed data. A discrete quadtree transform (DQT) operation is in supplement of the adaptive block size block selection with coefficient replacement to optimize image data compression.

    摘要翻译： 在用于压缩图像数据的自适应块大小图像压缩方法和系统中，用于进一步压缩图像数据以进行传输的相应方法和系统。 每个块和对应的像素数据子块经受离散余弦变换（DCT）运算。 选择所得到的相应变换系数的子块的不同级别用于构造成与像素数据的每个输入块相对应的复合变换系数块。 通过变换块和子块编码效率之间的比较处理来确定复合块的变换系数块大小的选择。 复合块是可变长度编码的，以进一步减少压缩数据中的位数。 离散四叉树变换（DQT）操作补充了具有系数替换的自适应块大小块选择，以优化图像数据压缩。

    Inter-pulse duty cycling
    29.
    发明授权
    Inter-pulse duty cycling 有权
    脉冲间负荷循环

    公开(公告)号：US08553745B2

    公开(公告)日：2013-10-08

    申请号：US11740771

    申请日：2007-04-26

    申请人： Chong U. Lee ,  Amal Ekbal ,  David Jonathan Julian ,  Zhanfeng Jia

    发明人： Chong U. Lee ,  Amal Ekbal ,  David Jonathan Julian ,  Zhanfeng Jia

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7174 ,  H04B1/71632 ,  H04R25/554 ,  H04R25/558 ,  H04R27/00 ,  H04R2225/33 ,  H04R2225/55 ,  H04R2227/003 ,  H04R2420/07

    摘要： Low power wireless communication techniques may be employed in devices that communicate via a wireless body area network, a wireless personal area network, or some other type of wireless communication link. In some implementations the devices may communicate via one or more impulse-based ultra-wideband channels. Inter-pulse duty cycling may be employed to reduce the power consumption of a device. Power may be provided for the transmissions and receptions of pulses by charging and discharging a capacitive element according to the inter-pulse duty cycling. Sub-packet data may be transmitted and received via a common frequency band. A cell phone may multicast to two or more peripherals via wireless communication links.

    摘要翻译： 低功率无线通信技术可以用于经由无线体区域网络，无线个人区域网络或某种其他类型的无线通信链路进行通信的设备中。 在一些实现中，设备可以经由一个或多个基于脉冲的超宽带信道进行通信。 可以采用脉冲间占空比来降低器件的功耗。 可以通过根据脉冲间负载循环对电容元件进行充电和放电来为发射和接收脉冲提供功率。 可以经由公共频带发送和接收子分组数据。 蜂窝电话可以通过无线通信链路多播到两个或多个外围设备。

    CODING OF FEATURE LOCATION INFORMATION
    30.
    发明申请
    CODING OF FEATURE LOCATION INFORMATION 有权
    特征位置信息编码

    公开(公告)号：US20130039566A1

    公开(公告)日：2013-02-14

    申请号：US13229654

    申请日：2011-09-09

    申请人： Yuriy Reznick ,  Onur C. Hamsici ,  Sundeep Vaddadi ,  John H. Hong ,  Chong U. Lee

    发明人： Yuriy Reznick ,  Onur C. Hamsici ,  Sundeep Vaddadi ,  John H. Hong ,  Chong U. Lee

    IPC分类号： G06K9/36 ,  G06K9/00

    CPC分类号： G06T9/00 ,  G06F17/18 ,  G06F17/30247 ,  G06K9/4671 ,  G06K2009/226 ,  G06T9/005

    摘要： Methods and devices for coding of feature locations are disclosed. In one embodiment, a method of coding feature location information of an image includes generating a hexagonal grid, where the hexagonal grid includes a plurality of hexagonal cells, quantizing feature locations of an image using the hexagonal grid, generating a histogram to record occurrences of feature locations in each hexagonal cell, and encoding the histogram in accordance with the occurrences of feature locations in each hexagonal cell. The method of encoding the histogram includes applying context information of neighboring hexagonal cells to encode information of a subsequent hexagonal cell to be encoded in the histogram, where the context information includes context information from first order neighbors and context information from second order neighbors of the subsequent hexagonal cell to be encoded.

    摘要翻译： 公开了用于编码特征位置的方法和装置。 在一个实施例中，一种编码图像的特征位置信息的方法包括生成六边形网格，其中六边形网格包括多个六边形单元格，使用六边形网格量化图像的特征位置，生成直方图以记录特征的出现 每个六边形单元格中的位置，并根据每个六边形单元格中特征位置的出现来对直方图进行编码。 对直方图进行编码的方法包括应用相邻六边形单元格的上下文信息来编码在直方图中要编码的随后的六边形单元格的信息，其中上下文信息包括来自一阶邻居的上下文信息和来自第二阶邻居的上下文信息 六角形单元格进行编码。