利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.02 秒)

    Onu And Method For Converting/Combining Frequency, And Apparatus And Method For Converting/Combining Frequency In Catv Headend System
    1.
    发明申请
    Onu And Method For Converting/Combining Frequency, And Apparatus And Method For Converting/Combining Frequency In Catv Headend System 有权

    公开(公告)号：US20070274730A1

    公开(公告)日：2007-11-29

    申请号：US11630160

    申请日：2004-12-30

    申请人： Han-Seung Koo ,  O-Hyung Kwon ,  Woongshik You ,  Soo-in Lee

    发明人： Han-Seung Koo ,  O-Hyung Kwon ,  Woongshik You ,  Soo-in Lee

    IPC分类号： H04N7/22

    CPC分类号： H04H20/69 ,  H04H60/97 ,  H04J14/0298 ,  H04N7/10 ,  H04N7/17309 ,  H04N7/22 ,  H04N21/4402 ,  H04N21/6118

    摘要： Provided is an outdoor optical node unit (ONU) and method for converting/combining frequencies, and an apparatus and method for converting/combining frequencies in a cable television headend system. The optical node unit (ONU) includes: a downstream optic-to-electric converting unit for converting a downstream optic signal transferred through an optical cable network from a headend system to a downstream electric signal; a down frequency converting and combining unit for isolating the downstream electric signal to a broadcasting signal transmitted as a coaxial cable usable frequency band (In-Band signal) and a band signal higher than the coaxial cable usable frequency band (Super-Band (SB) signal), isolating each of channel signals in the SB signal, converting the isolated channel signals to downstream signals in a coaxial cable usable frequency band, and combining each of the frequency-converted downstream signals with the In-Band signal to generate a coaxial cable usable frequency band downstream signal; an up/down band isolating unit for outputting each of the coaxial cable usable frequency band downstream signals inputted from the down frequency converting and combining unit to a corresponding coaxial cable, or dividing an upstream signal transferred through a coaxial cable from each of subscriber's sub cells to a cable TV upstream frequency band signal and In-Band upstream channel band signal (IUC band signal) which is other upstream channel in a coaxial cable usable frequency band excepting the cable TV upstream frequency band, and outputting the cable TV upstream frequency band signal and the IUC band signal to an upstream frequency converting and combining unit; an upstream frequency converting and combining unit for converting the upstream signals which are the cable TV upstream frequency band signal and the IUC band signal inputted from the up/down band isolating unit to channels not overlapped in the coaxial cable usable frequency band, combining the converted channel signals to generate a coaxial cable usable frequency band upstream electric signal; an up electric-to-optic converting unit for receiving the optical cable usable frequency band upstream electric signal, converting the optical cable usable frequency band upstream electric signal to an upstream optical signal, and outputting the upstream optical signal to the headend system through an optical cable network; and a local oscillating unit for generating local oscillating signal for frequency-conversion, and providing the generated local oscillating signal to the down frequency converting and combining unit or the up frequency converting and combining unit.

    ONU and method for converting/combining frequency, and apparatus and method for converting/combining frequency in CATV headend system
    2.
    发明授权
    ONU and method for converting/combining frequency, and apparatus and method for converting/combining frequency in CATV headend system 有权

    公开(公告)号：US07669224B2

    公开(公告)日：2010-02-23

    申请号：US11630160

    申请日：2004-12-30

    申请人： Han-Seung Koo ,  O-Hyung Kwon ,  Woongshik You ,  Soo-in Lee

    发明人： Han-Seung Koo ,  O-Hyung Kwon ,  Woongshik You ,  Soo-in Lee

    IPC分类号： H04N7/22

    CPC分类号： H04H20/69 ,  H04H60/97 ,  H04J14/0298 ,  H04N7/10 ,  H04N7/17309 ,  H04N7/22 ,  H04N21/4402 ,  H04N21/6118

    摘要： Provided is an outdoor optical node unit (ONU) and method for converting/combining frequencies, and an apparatus and method for converting/combining frequencies in a cable television headend system. The optical node unit (ONU) includes: a downstream optic-to-electric converting unit for converting a downstream optic signal transferred through an optical cable network from a headend system to a downstream electric signal; a down frequency converting and combining unit for isolating the downstream electric signal to a broadcasting signal transmitted as a coaxial cable usable frequency band (In-Band signal) and a band signal higher than the coaxial cable usable frequency band (Super-Band (SB) signal), isolating each of channel signals in the SB signal, converting the isolated channel signals to downstream signals in a coaxial cable usable frequency band, and combining each of the frequency-converted downstream signals with the In-Band signal to generate a coaxial cable usable frequency band downstream signal; an up/down band isolating unit for outputting each of the coaxial cable usable frequency band downstream signals inputted from the down frequency converting and combining unit to a corresponding coaxial cable, or dividing an upstream signal transferred through a coaxial cable from each of subscriber's sub cells to a cable TV upstream frequency band signal and In-Band upstream channel band signal (IUC band signal) which is other upstream channel in a coaxial cable usable frequency band excepting the cable TV upstream frequency band, and outputting the cable TV upstream frequency band signal and the IUC band signal to an upstream frequency converting and combining unit; an upstream frequency converting and combining unit for converting the upstream signals which are the cable TV upstream frequency band signal and the IUC band signal inputted from the up/down band isolating unit to channels not overlapped in the coaxial cable usable frequency band, combining the converted channel signals to generate a coaxial cable usable frequency band upstream electric signal; an up electric-to-optic converting unit for receiving the optical cable usable frequency band upstream electric signal, converting the optical cable usable frequency band upstream electric signal to an upstream optical signal, and outputting the upstream optical signal to the headend system through an optical cable network; and a local oscillating unit for generating local oscillating signal for frequency-conversion, and providing the generated local oscillating signal to the down frequency converting and combining unit or the up frequency converting and combining unit.

    Apparatus and method for encoding or/and decoding digital hologram
    5.
    发明申请
    Apparatus and method for encoding or/and decoding digital hologram 审中-公开
    数字全息图的编码或解码装置和方法

    公开(公告)号：US20090213443A1

    公开(公告)日：2009-08-27

    申请号：US11887068

    申请日：2005-09-28

    申请人： Hoon-Jong Kang ,  Dae-Hee Kim ,  Kug-Jin Yun ,  Chung-Hyun Ahn ,  Soo-in Lee

    发明人： Hoon-Jong Kang ,  Dae-Hee Kim ,  Kug-Jin Yun ,  Chung-Hyun Ahn ,  Soo-in Lee

    IPC分类号： G03H1/16

    CPC分类号： H04N19/176 ,  G03H1/08 ,  H04N19/597 ,  H04N19/61 ,  H04N19/63 ,  H04N19/90

    摘要： Provided is an apparatus for encoding and/or decoding a digital hologram. The apparatus for encoding a digital hologram includes: a segmentation unit for dividing a digital hologram inputted from an external device into a plurality of blocks; an orthogonal transforming unit for orthogonally transforming each of the divided blocks; a quantization unit for quantizing information of each of the transformed blocks; a scanning unit for scanning each of the quantized blocks to transform the plurality of the quantized blocks to single moving image sequence; and a moving image encoding unit for encoding the single moving image sequence configuring a digital hologram to compress the signal moving image sequence.

    摘要翻译： 提供了一种用于对数字全息图进行编码和/或解码的装置。 用于编码数字全息图的装置包括：分割单元，用于将从外部设备输入的数字全息图分成多个块; 正交变换单元，用于对每个分割块进行正交变换; 用于量化每个变换块的信息的量化单元; 扫描单元，用于扫描每个量化块以将多个量化块变换为单个运动图像序列; 以及运动图像编码单元，用于对构成数字全息图的单个运动图像序列进行编码，以压缩信号运动图像序列。

    METHOD AND APPARATUS FOR ENCODING AND DECODING THE COMPENSATED ILLUMINATION CHANGE
    7.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING THE COMPENSATED ILLUMINATION CHANGE 审中-公开
    编码和解码补偿照明变化的方法和装置

    公开(公告)号：US20100232507A1

    公开(公告)日：2010-09-16

    申请号：US12293577

    申请日：2007-03-22

    申请人： Suk-Hee Cho ,  Hyoung-Jin Kwon ,  Namho Hur ,  Jin-Woong Kim ,  Soo-in Lee ,  Yung-Lyul Lee ,  Jae-Ho Hur ,  Dong-Gyu Sim

    发明人： Suk-Hee Cho ,  Hyoung-Jin Kwon ,  Namho Hur ,  Jin-Woong Kim ,  Soo-in Lee ,  Yung-Lyul Lee ,  Jae-Ho Hur ,  Dong-Gyu Sim

    IPC分类号： H04N7/26

    CPC分类号： H04N19/463 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70

    摘要： A method of and apparatus for encoding and decoding a signal by illumination change compensated motion estimation are provided. The apparatus for encoding a signal by illumination change compensated motion estimation includes: an illumination change compensation unit performing compensation for an illumination change by performing a differential calculation between each pixel value of a current block and the means pixel value of a reference block indicated by a motion vector of the current block and the mean pixel value of the reference block; a residual signals generation unit generating residual signals based on the blocks in which illumination change compensation is performed; and an illumination changed amount prediction unit performing differential pulse code modulation (DPCM) based on the illumination change amount prediction value by reflecting the closeness between neighboring blocks in which illumination change occurs.

    摘要翻译： 提供了一种通过照明变化补偿运动估计对信号进行编码和解码的方法和装置。 用于通过照明改变补偿运动估计对信号进行编码的装置包括：照明变化补偿单元，通过对当前块的每个像素值和由参考块指示的参考块的平均值进行差分计算来执行对照明变化的补偿 当前块的运动矢量和参考块的平均像素值; 剩余信号生成单元，基于进行照明变化补偿的块生成残留信号; 以及照明变化量预测单元，通过反映发生照明变化的相邻块之间的接近度，基于照明变化量预测值来执行差分脉冲编码调制（DPCM）。

    APPARATUS AND METHOD FOR EQUALIZING CHANNEL BASED ON CHANNEL ESTIMATION
    9.
    发明申请
    APPARATUS AND METHOD FOR EQUALIZING CHANNEL BASED ON CHANNEL ESTIMATION 失效
    基于通道估计的均衡通道的装置和方法

    公开(公告)号：US20110142118A1

    公开(公告)日：2011-06-16

    申请号：US13057164

    申请日：2008-11-28

    申请人： Jae-Hyun Seo ,  Heung-Mook Kim ,  Soo-in Lee

    发明人： Jae-Hyun Seo ,  Heung-Mook Kim ,  Soo-in Lee

    IPC分类号： H04L27/01

    CPC分类号： H04L27/261 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03159 ,  H04L27/2647 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2025/03414

    摘要： Provided is a channel equalizing apparatus and method for improving channel equalization performance in an Orthogonal Frequency Division Multiplexing (OFDM) reception system applied to digital broadcasting or a communication system. The apparatus, includes: a channel estimating unit for performing channel estimation by using a pilot signal of a frequency domain; a digital filtering unit for changing a characteristic of a channel in a time domain based on an estimated channel estimation result; and a channel equalizing unit for performing channel equalization of a frequency domain on the signal after changing the channel characteristic.

    摘要翻译： 提供了一种用于改善应用于数字广播或通信系统的正交频分复用（OFDM）接收系统中的信道均衡性能的信道均衡装置和方法。 该装置包括：信道估计单元，用于通过使用频域的导频信号进行信道估计; 数字滤波单元，用于基于估计的信道估计结果来改变时域中的信道的特性; 以及信道均衡单元，用于在改变信道特性之后对信号进行频域的信道均衡。