Apparatus for receiving cable TV broadcasting program, and multiplexer and de-multiplexer thereof
    91.
    发明申请
    Apparatus for receiving cable TV broadcasting program, and multiplexer and de-multiplexer thereof 有权
    用于接收有线电视广播节目的装置,以及其多路复用器和解复用器

    公开(公告)号:US20070074256A1

    公开(公告)日:2007-03-29

    申请号:US11452486

    申请日:2006-06-13

    IPC分类号: H04N7/173 H04N7/16

    摘要: Provided are an apparatus for receiving cable broadcasting programs and a multiplexer and a de-multiplexer thereof for reducing data amount processed in a Cable CARD and for correcting synchronization of descrambled data stream. The apparatus includes: a multiplexing unit for filtering a broadcasting stream to select only programs selected by a viewer and multiplexing the selected programs; a conditional-access processing unit for receiving the multiplexed streams and processing the multiplexed streams for conditional access (descrambling); and a de-multiplexing unit for de-multiplexing the multi stream from the conditional-access processing unit and correcting a program clock reference (PCR).

    摘要翻译: 提供了一种用于接收有线广播节目的装置和用于减少在有线电视卡中处理的数据量并用于校正解扰数据流的同步的多路复用器和解复用器。 该装置包括:多路复用单元,用于过滤广播流以仅选择由观看者选择的节目并且复用所选择的节目; 条件访问处理单元,用于接收多路复用的流并处理用于条件访问(解扰)的多路复用流; 以及解复用单元,用于从条件访问处理单元解复用多流,并校正程序时钟参考(PCR)。

    Data server for interactive data broadcasting service and interactive data broadcasting service providing method using the same
    93.
    发明申请
    Data server for interactive data broadcasting service and interactive data broadcasting service providing method using the same 审中-公开
    用于交互式数据广播服务的数据服务器和使用其的交互式数据广播服务提供方法

    公开(公告)号:US20060130114A1

    公开(公告)日:2006-06-15

    申请号:US11218810

    申请日:2005-09-01

    IPC分类号: H04N7/173 H04N7/16

    摘要: Provided are a data server for interactive data broadcasting service and an interactive data broadcasting service providing method using the same. The present invention provides a data broadcasting service where users can participate in real-time by processing messages inputted through a return channel according to each content. The data server includes: a contents registering unit for registering a content of data broadcasting service in a file system; a storage for managing and storing signaling information of the registered content; and a data processing unit for defining an application message for the content supporting an interactive service, identifying the kind of the content by receiving the message inputted through a return channel, updating the content by analyzing the inputted message based on structural information of the message to perform interactive data broadcasting service in real-time.

    摘要翻译: 提供了一种用于交互式数据广播服务的数据服务器和使用其的交互式数据广播服务提供方法。 本发明提供一种数据广播服务,其中用户可以通过根据每个内容处理通过返回信道输入的消息来实时参与。 数据服务器包括:内容登记单元,用于在文件系统中注册数据广播服务的内容; 用于管理和存储注册内容的信令信息的存储器; 以及数据处理单元,用于定义用于支持交互式服务的内容的应用消息,通过接收通过返回信道输入的消息来识别内容的种类,通过基于消息的结构信息分析所输入的消息来更新内容 实时执行交互式数据广播服务。

    In-band adjacent-channel digital audio broadcasting system

    公开(公告)号:US07050511B2

    公开(公告)日:2006-05-23

    申请号:US09967548

    申请日:2001-09-28

    IPC分类号: H03C1/52 H04L27/04

    摘要: The in-band adjacent-channel digital audio broadcasting system includes a scrambling unit for scrambling a signal to be broadcasted, thereby generating a scrambled signal; an outer coding unit for performing a first encoding of the scrambled signal, thereby generating an outer encoded signal; an outer interleaving unit for performing a first interleaving of the outer encoded signal a byte by byte basis, thereby generating an outer interleaved signal; an inner coding unit for performing a second encoding the outer interleaved signal, thereby generating an inner encoded signal; an inner interleaving unit for performing a second interleaving of the inner encoded signal, thereby generating an inner interleaved signal; a modulating unit for modulating the inner interleaved signal, thereby generating an orthogonal frequency division multiplexing (OFDM) symbols; a guard interval inserting unit for inserting a guard interval between the OFDM symbols in order to eliminate an inter-symbol interference, thereby generating an OFDM frame; and an RF processing unit for performing a conversion of the OFDM frame into an analog radio frequency signal so that the OFDM signal can be transmitted in a specific frequency channel of an FM frequency band, and for amplifying and outputting the analog radio frequency signal.

    Method for subscribing service and distributing encryption key based on public-key encryption algorithm in digital CATV system
    95.
    发明申请
    Method for subscribing service and distributing encryption key based on public-key encryption algorithm in digital CATV system 有权
    基于公钥加密算法在数字有线电视系统中订阅服务和分发加密密钥的方法

    公开(公告)号:US20050141712A1

    公开(公告)日:2005-06-30

    申请号:US10868508

    申请日:2004-06-14

    IPC分类号: H04N7/167 H04N7/173

    摘要: A method for subscribing a service and distributing encryption key based on public-key encryption algorithm in a digital CATV system are disclosed. In accordance with an aspect of the present invention, there is provided a method including the steps of: a) generating a charged service application message; b) generating a session connection request message, signing based on a digital signature scheme with appendix on the session connection request message and transmitting to the head-end; c) generating a symmetric-based session key, signing a digital signature on the key, encrypting based on a public-key of the subscriber, transmitting the session key to the subscriber; decrypting the session key message, verifying the digital signature, extracting the session key from the session key message and storing at a Condition Access Module; and d) signing a digital signature on the charged service request message, encrypting using the extracted session key and transmitting to the head-end.

    摘要翻译: 公开了一种在数字CATV系统中基于公开密钥加密算法订阅服务并分发加密密钥的方法。 根据本发明的一个方面,提供了一种方法,包括以下步骤:a)产生带电业务应用消息; b)生成会话连接请求消息,基于会话连接请求消息的附录基于数字签名方案进行签名并发送到前端; c)生成基于对称的会话密钥,在密钥上签署数字签名,基于订户的公开密钥加密,向用户发送会话密钥; 解密会话密钥消息,验证数字签名,从会话密钥消息中提取会话密钥并存储在条件访问模块; 以及d)在所收取的服务请求消息上签署数字签名,使用所提取的会话密钥进行加密并发送到头端。

    Apparatus for equalizing channel in frequency domain and method therefor
    98.
    发明授权
    Apparatus for equalizing channel in frequency domain and method therefor 失效
    用于均衡频域信道的装置及其方法

    公开(公告)号:US08170089B2

    公开(公告)日:2012-05-01

    申请号:US12088040

    申请日:2005-12-26

    IPC分类号: H03H7/30

    CPC分类号: H04L25/03159 H04L25/0212

    摘要: Provided is an apparatus for channel equalization in frequency domain, including: a channel estimation unit for estimating a channel on received signal from outside, a channel matched filter for changing channel characteristic of the channel estimated by the channel estimation unit and the received signal to channel characteristic to meet condition required for noncausal filtering, a noncausal filter for changing the channel characteristic changed by the channel matched filter from nonminimum phase channel to minimum phase channel, a reverse channel calculation unit for calculating a reverse of the channel changed by the noncausal filter in frequency domain, and a frequency domain equalization unit for performing channel equalization with respect to the channel changed by the noncausal filter in the frequency domain by using the reverse obtained by the reverse channel calculation unit as coefficients of the frequency domain equalization apparatus.

    摘要翻译: 提供了一种频域信道均衡的装置,包括:信道估计单元,用于估计来自外部的接收信号的信道,用于改变由信道估计单元估计的信道的信道特性的信道匹配滤波器,以及接收的信道到信道 特征为满足非因果滤波所需的条件,用于将由信道匹配滤波器改变的信道特性改变为非最小相位信道的非因果滤波器,用于计算由非因果滤波器改变的信道的反向的反向信道计算单元, 频域均衡单元,用于通过使用由反向信道计算单元获得的反相作为频域均衡装置的系数,对频域中的非因果滤波器改变的信道进行信道均衡。

    MULTI- VIEW VIDEO CODING/DECODING METHOD AND APPARATUS
    99.
    发明申请
    MULTI- VIEW VIDEO CODING/DECODING METHOD AND APPARATUS 有权
    多视图编码/解码方法和装置

    公开(公告)号:US20110261883A1

    公开(公告)日:2011-10-27

    申请号:US13133576

    申请日:2009-12-08

    IPC分类号: H04N7/32 H04N7/26

    摘要: Provided is a multi-view video coding/decoding method and apparatus which uses coded and decoded multi-view videos to code and decode depth information videos corresponding to the multi-view videos. The multi-view video coding method includes: controlling the scales of first and second depth information videos corresponding to a multi-view video such that the scales are equalized; and coding the second depth information video, of which the scale is controlled, by referring to the first depth information video of which the scale is controlled.

    摘要翻译: 提供了一种多视点视频编码/解码方法和装置,其使用编码和解码的多视图视频对与多视点视频对应的深度信息视频进行编码和解码。 多视点视频编码方法包括:控制对应于多视点视频的第一和第二深度信息视频的比例,使得比例相等; 并且通过参考控制刻度的第一深度信息视频,对控制了比例的第二深度信息视频进行编码。