公开(公告)号：US20150312507A1

公开(公告)日：2015-10-29

申请号：US14442803

申请日：2013-05-23

申请人： ZHEJIANG DAHUA TECHNOLOGY CO., LTD

发明人： Jun YIN ,  Zhicheng YE ,  Chenge LIAO ,  Xingming ZHANG ,  Liquan FU ,  Jiangming ZHU ,  Jun WU ,  Jian WU

IPC分类号： H04N5/38 ,  H04N9/44 ,  H04N5/60

CPC分类号： H04N5/38 ,  H04N5/60 ,  H04N5/602 ,  H04N7/0355 ,  H04N7/06 ,  H04N7/083 ,  H04N7/085 ,  H04N9/44 ,  H04N21/43632

摘要： A method and an apparatus for sending and receiving audio data, so as to solve the problem that in the prior art, a simulating audio and video transmission system is complex in cable connection structure. The audio data is overlaid at a preset position of a video blanking interval of video data, sending and receiving of audio signals are carried out, and co-cable transmission of the audio and video data can be achieved.

摘要翻译： 一种用于发送和接收音频数据的方法和装置，以解决现有技术中模拟音视频传输系统在电缆连接结构中复杂的问题。 音频数据被叠加在视频数据的视频消隐间隔的预设位置，执行音频信号的发送和接收，并且可以实现音频和视频数据的共缆传输。

公开(公告)号：US20130113991A1

公开(公告)日：2013-05-09

申请号：US13668533

申请日：2012-11-05

申请人： ELECTRONICS AND TELECOMMUNICATIONS R

发明人： Jin Kyeong KIM ,  Woo Yong LEE ,  Hyoung Jin KWON ,  Kyeongpyo KIM ,  Yong Sun KIM

IPC分类号： H04N7/084

CPC分类号： H04N7/084 ,  H04N7/083 ,  H04N7/085 ,  H04N21/235 ,  H04N21/435

摘要： Provided are a method and apparatus for transceiving an asymmetric point-to-point moving signal and securing an uplink channel using a horizontal blanking interval (HBI) in which a video signal transceiving apparatus can combine a plurality of HBIs and a plurality of active lines (ALs) into a single section, and when auxiliary data exists in a corresponding HBI, can change an order of the HBI to the last and transmit map information including arrangement information to a video signal display apparatus, and the video signal display apparatus can receive the map information and analyze the received map information to thereby acquire an uplink channel using HBI excluding auxiliary data and transmit control signal data via the acquired uplink channel.

摘要翻译： 提供了一种用于收发非对称点对点移动信号并使用水平消隐间隔（HBI）来保护上行链路信道的方法和装置，其中视频信号收发装置可以组合多个HBI和多个活动线路 AL）分成单个部分，并且当辅助数据存在于对应的HBI中时，可以将HBI的顺序改变为最后，并将包括布置信息的地图信息发送到视频信号显示装置，并且视频信号显示装置可以接收 映射信息并分析接收到的地图信息，从而使用不包括辅助数据的HBI获取上行链路信道，并且经由获取的上行链路信道发送控制信号数据。

公开(公告)号：US08325634B2

公开(公告)日：2012-12-04

申请号：US12676527

申请日：2008-08-25

申请人： Jin Kyeong Kim ,  Woo Yong Lee ,  Hyoung Jin Kwon ,  Kyeongpyo Kim ,  Yong Sun Kim

发明人： Jin Kyeong Kim ,  Woo Yong Lee ,  Hyoung Jin Kwon ,  Kyeongpyo Kim ,  Yong Sun Kim

IPC分类号： H04B1/44

CPC分类号： H04N7/084 ,  H04N7/083 ,  H04N7/085 ,  H04N21/235 ,  H04N21/435

摘要： Provided are a method and apparatus for transceiving an asymmetric point-to-point moving signal and securing an uplink channel using a horizontal blanking interval (HBI) in which a video signal transceiving apparatus can combine a plurality of HBIs and a plurality of active lines (ALs) into a single section, and when auxiliary data exists in a corresponding HBI, can change an order of the HBI to the last and transmit map information including arrangement information to a video signal display apparatus, and the video signal display apparatus can receive the map information and analyze the received map information to thereby acquire an uplink channel using HBI excluding auxiliary data and transmit control signal data via the acquired uplink channel.

摘要翻译： 提供了一种用于收发非对称点对点移动信号并使用水平消隐间隔（HBI）来保护上行链路信道的方法和装置，其中视频信号收发装置可以组合多个HBI和多个活动线路 AL）分成单个部分，并且当辅助数据存在于对应的HBI中时，可以将HBI的顺序改变为最后，并将包括布置信息的地图信息发送到视频信号显示装置，并且视频信号显示装置可以接收 映射信息并分析接收到的地图信息，从而使用不包括辅助数据的HBI获取上行链路信道，并且经由获取的上行链路信道发送控制信号数据。

公开(公告)号：US20100182503A1

公开(公告)日：2010-07-22

申请号：US12676527

申请日：2008-08-25

申请人： Jin Kyeong Kim ,  Woo Yong Lee ,  Hyoung Jin Kwon ,  Kyeongpyo Kim ,  Yong Sun Kim

发明人： Jin Kyeong Kim ,  Woo Yong Lee ,  Hyoung Jin Kwon ,  Kyeongpyo Kim ,  Yong Sun Kim

IPC分类号： H04N7/084

CPC分类号： H04N7/084 ,  H04N7/083 ,  H04N7/085 ,  H04N21/235 ,  H04N21/435

摘要： Provided are a method and apparatus for transceiving an asymmetric point-to-point moving signal and securing an uplink channel using a horizontal blanking interval (HBI) in which a video signal transceiving apparatus can combine a plurality of HBIs and a plurality of active lines (ALs) into a single section, and when auxiliary data exists in a corresponding HBI, can change an order of the HBI to the last and transmit map information including arrangement information to a video signal display apparatus, and the video signal display apparatus can receive the map information and analyze the received map information to thereby acquire an uplink channel using HBI excluding auxiliary data and transmit control signal data via the acquired uplink channel.

摘要翻译： 提供了一种用于收发非对称点对点移动信号并使用水平消隐间隔（HBI）来保护上行链路信道的方法和装置，其中视频信号收发装置可以组合多个HBI和多个活动线路 AL）分成单个部分，并且当辅助数据存在于对应的HBI中时，可以将HBI的顺序改变为最后，并将包括布置信息的地图信息发送到视频信号显示装置，并且视频信号显示装置可以接收 映射信息并分析接收到的地图信息，从而使用不包括辅助数据的HBI获取上行链路信道，并且经由获取的上行链路信道发送控制信号数据。

公开(公告)号：US06874161B1

公开(公告)日：2005-03-29

申请号：US09107267

申请日：1998-06-30

申请人： Steven Wasserman ,  Stephen G. Perlman

发明人： Steven Wasserman ,  Stephen G. Perlman

IPC分类号： H04H20/40 ,  H04H20/42 ,  H04H20/91 ,  H04H60/82 ,  H04N7/083 ,  H04N7/085 ,  H04N7/088 ,  H04N7/173 ,  H04N7/00 ,  H04N7/14

CPC分类号： H04N21/435 ,  H04H20/40 ,  H04H20/42 ,  H04H20/91 ,  H04H60/82 ,  H04H2201/33 ,  H04N7/083 ,  H04N7/085 ,  H04N7/088 ,  H04N7/17327 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/26241 ,  H04N21/4143 ,  H04N21/4331 ,  H04N21/4383 ,  H04N21/4622 ,  H04N21/47202 ,  H04N21/4782 ,  H04N21/4786 ,  H04N21/482 ,  H04N21/6125 ,  H04N21/6587

摘要： A method and apparatus for utilizing a high bandwidth communications channel for broadcasting network data during off-peak hours is disclosed. A demodulation unit includes, 1) a standard television broadcast signal receiver, the signal having a plurality of channels; 2) a partitioning unit configured to partition at least one channel of said plurality of channels into a plurality of variable size sub-channels; 3) a modulating unit configured to modulate a variety of different types of information into said plurality of sub-channels; and 4) a transmitter configured to transmit said plurality of sub-channels over a high bandwidth communications channel during off-peak hours.

摘要翻译： 公开了一种在非高峰时段利用高带宽通信信道广播网络数据的方法和装置。 解调单元包括：1）标准电视广播信号接收机，该信号具有多个信道; 2）分区单元，被配置为将所述多个信道中的至少一个信道划分成多个可变大小子信道; 3）调制单元，被配置为将各种不同类型的信息调制到所述多个子信道中; 以及4）发射机，被配置为在非高峰时段内在高带宽通信信道上发送所述多个子信道。

公开(公告)号：US06412112B1

公开(公告)日：2002-06-25

申请号：US09246275

申请日：1999-02-08

申请人： Peter T. Barrett ,  Steven C. Wasserman ,  Stephen G. Perlman

发明人： Peter T. Barrett ,  Steven C. Wasserman ,  Stephen G. Perlman

IPC分类号： H04N716

CPC分类号： H04N21/23614 ,  H04H20/40 ,  H04H20/42 ,  H04H20/74 ,  H04H20/91 ,  H04H20/95 ,  H04H40/09 ,  H04H40/90 ,  H04H60/72 ,  H04H60/82 ,  H04H2201/33 ,  H04N7/083 ,  H04N7/085 ,  H04N7/088 ,  H04N7/17327 ,  H04N19/61 ,  H04N21/235 ,  H04N21/26241 ,  H04N21/4143 ,  H04N21/4331 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/4383 ,  H04N21/4622 ,  H04N21/47202 ,  H04N21/4782 ,  H04N21/4786 ,  H04N21/482 ,  H04N21/6125 ,  H04N21/6587

摘要： A system for distributing digital data over a video channel to a plurality of remotely located client terminals. The system involves selecting a set of digital data to be distributed and converting it to an intermediate format compatible with video broadcast. The intermediate data is then broadcast over a video channel during a time when no video content is being transmitted so that the intermediate format data takes the place of the video content. The intermediate format data is received at a remotely located client terminal where the set of digital data is recovered.

摘要翻译： 一种用于通过视频信道将数字数据分发到多个位于远程的客户终端的系统。 该系统包括选择要分发的一组数字数据并将其转换成与视频广播兼容的中间格式。 然后，在不传输视频内容的时间期间，通过视频信道广播中间数据，以便中间格式数据代替视频内容。 中间格式数据在远程定位的客户终端处被接收，其中恢复数字数据集。

公开(公告)号：US5812184A

公开(公告)日：1998-09-22

申请号：US526841

申请日：1995-09-11

申请人： Louis Martinez

发明人： Louis Martinez

IPC分类号： G01S13/87 ,  H04B7/26 ,  H04L5/02 ,  H04L27/20 ,  H04N7/08 ,  H04N7/085 ,  H04N7/173 ,  H04W64/00 ,  H04N7/14

CPC分类号： G01S13/878 ,  H04B7/2621 ,  H04L27/2071 ,  H04L5/02 ,  H04N7/08 ,  H04N7/085 ,  H04N7/173 ,  H04N7/17309 ,  H04W64/00 ,  H04N2007/17372

摘要： A bidirectional cable television system provides for transmission of signals from cable subscribers downlink in the same direction as the ensemble of television channels which the cable television system is already constructed to deliver. The subscriber signals may be transmitted over the cable in the blanking intervals of a cable television channel, using the T-NET technique described in U.S. Pat. No. 4,750,036. Alternatively, the signals may be carried over a dedicated channel, or transmitted cochannel along a cable television channel carrying ordinary programming by adding the subscriber information to alternating video frames in alternating polarity to achieve visual cancellation. The subscriber signals are collected after the last distribution line amplifier in the cable downlink. The collected signals are transmitted to a central receiver via wireless or other customary means such as a modem. The collected signals may alternatively be transmitted over the air to the central receiver in the blanking intervals of a broadcast television channel using the T-NET technique.

摘要翻译： 双向有线电视系统提供来自电缆用户下行链路的信号的传输方向与有线电视系统已经构建为传送的电视频道的整体相同。 用户信号可以在有线电视频道的消隐间隔内通过电缆传输，使用在美国专利No.4,215,254中描述的T-NET技术。 第4,750,036号。 或者，可以通过将具有交替视频帧的用户信息添加到交替极性以实现视觉消除的方式，通过携带普通节目的有线电视频道的专用信道或发送的同频道来传送信号。 用户信号在电缆下行链路中的最后一个配线放大器之后被收集。 所收集的信号通过诸如调制解调器之类的无线或其它常规手段传送到中央接收机。 也可以采用T-NET技术将所收集的信号通过空中传送到广播电视频道的消隐间隔中的中央接收机。

公开(公告)号：US5177604A

公开(公告)日：1993-01-05

申请号：US202206

申请日：1988-06-03

申请人： Louis Martinez

发明人： Louis Martinez

IPC分类号： G01S13/87 ,  H04B7/26 ,  H04L5/02 ,  H04L27/20 ,  H04N7/08 ,  H04N7/085 ,  H04N7/173 ,  H04W64/00

CPC分类号： H04W64/00 ,  G01S13/878 ,  H04B7/2621 ,  H04L27/2071 ,  H04L5/02 ,  H04N7/08 ,  H04N7/085 ,  H04N7/173 ,  H04N7/17309 ,  H04N2007/17372

摘要： A spread spectrum system provides bidirectional digital communication on a vacant television (TV) channel for simultaneous use by more than 75,000 subscribers using time and frequency division multiplex signals locked to horizontal and vertical sync pulses of an adjacent channel Host TV station. The system, whose operation is analogous to a radar system, comprises (1) the Host TV station to send down-link sync and data pulses to subscribers during the horizontal blanking interval (HBI), (2) subscriber "transponders" which detect those signals and transmits up-link "echo" data pulses only during the HBI to eliminate interference to TV viewers, and (3) a central receiver which also uses the host TV sync pulses to trigger range gates to detect the up-link data pulses. In a preferred embodiment the central receiver employs directional antennas to determine direction to transponders and to define angular sectors partitioning the service area into pie-link "cells" which permit frequency re-use in non-contiguous sectors (like cellular radio). The system thus operates like a radar to measure elasped time between receipt of TV sync pulses and receipt of transponder response pulses and measures bearing to transponders to thereby determine the location of fixed or mobile subscribers as well as provide data links to them. Transponders may share user's existing TV antenna or may operate on cable TV and could be packaged as "RF modems" for personal computers, as transceivers for mobile or portable use, or they may be integrated with a TV receiver to provide "interactive television".

摘要翻译： 扩展频谱系统在空闲电视（TV）频道上提供双向数字通信，用于由超过75,000个用户同时使用使用锁定在相邻信道主机电视台的水平和垂直同步脉冲的时间和频分复用信号。 该系统的操作类似于雷达系统，包括（1）主机电视台在水平消隐间隔（HBI）期间向订户发送下行链路同步和数据脉冲，（2）检测到这些信号的用户“应答器” 信号并且仅在HBI期间传输上行链路“回波”数据脉冲，以消除对电视观众的干扰，以及（3）还使用主机TV同步脉冲触发范围门以检测上行链路数据脉冲的中央接收机。 在优选实施例中，中央接收机使用定向天线来确定对应答器的方向，并且将定义服务区域的角度扇区定义为允许在非连续扇区（如蜂窝无线电）中频率重新使用的像素链路“小区”。 因此，该系统像雷达一样操作来测量接收到TV同步脉冲之间的时间和接收到应答器响应脉冲之间的时间，以及对转发器的承受力，从而确定固定或移动用户的位置以及提供与它们的数据链接。 应答器可以共享用户现有的电视天线，或者可以在有线电视上操作，并且可以作为个人计算机的“RF调制解调器”打包，作为用于移动或便携式使用的收发器，或者它们可以与电视接收机集成以提供“交互式电视”。

公开(公告)号：US5144431A

公开(公告)日：1992-09-01

申请号：US408152

申请日：1989-09-15

申请人： Richard W. Citta ,  Ronald B. Lee

发明人： Richard W. Citta ,  Ronald B. Lee

IPC分类号： H04N7/015 ,  H04N7/08 ,  H04N7/085 ,  H04N7/088 ,  H04N7/12 ,  H04N7/26

CPC分类号： H04N7/127 ,  H04N19/186 ,  H04N7/015 ,  H04N7/08 ,  H04N7/085 ,  H04N7/088

摘要： A hybrid television signal of less transmission power (or better signal to noise performance) is made up by removing low frequency analog components from the video signal, digitizing them and sending them as data in non-active video portions of the transmitted signal. A two step hybridization process, with the first step removing the line averaged value of the video components of the video signal and the second step removing the remainder of the video components under 200 KHz, is described. Temporal filtering, signal pre-emphasis, compression, time dispersal and double sideband suppressed carrier modulation about a centered carrier are disclosed for reducing peak signal amplitudes and for minimizing co-channel interference to and from NTSC signals. Temporal filtering is performed with a feed forward filter in the transmission and a complementary feedback recursive filter in the receiver or with a recursive filter in the transmitter and a complementary feed forward filter in the receiver. The hybrid signal system is uniquely adapted to a high definition television signal in a limited frequency channel with an NTSC signal.

摘要翻译： 通过从视频信号中去除低频模拟分量，对它们进行数字化并将其作为发送信号的非有效视频部分中的数据发送来构成具有较少传输功率（或更好的信噪比性能）的混合电视信号。 描述了两步杂交处理，其中第一步除去视频信号的视频分量的行平均值，第二步除去200KHz以下的其余视频分量。 公开了关于中心载波的时间滤波，信号预加重，压缩，时间分散和双边带抑制的载波调制，用于降低峰值信号幅度并最小化与NTSC信号的共信道干扰。 使用传输中的前馈滤波器和接收机中的互补反馈递归滤波器或发射机中的递归滤波器和接收机中的互补前馈滤波器来执行时间滤波。 混合信号系统独特地适应于具有NTSC信号的有限频率信道中的高清晰度电视信号。

公开(公告)号：US4944032A

公开(公告)日：1990-07-24

申请号：US345712

申请日：1989-05-01

申请人： Sadashi Kageyama ,  Yoshio Abe ,  Yoshio Yasumoto ,  Shuji Inoue ,  Hitoshi Takai ,  Mitsujiro Matsumoto ,  Kouji Aono ,  Kiyoshi Uchimura ,  Iwasaki Eiji

发明人： Sadashi Kageyama ,  Yoshio Abe ,  Yoshio Yasumoto ,  Shuji Inoue ,  Hitoshi Takai ,  Mitsujiro Matsumoto ,  Kouji Aono ,  Kiyoshi Uchimura ,  Iwasaki Eiji

IPC分类号： H04N5/21 ,  H04N5/44 ,  H04N7/08 ,  H04N7/085 ,  H04N7/087 ,  H04N11/24

CPC分类号： H04N7/0122 ,  H04N11/006 ,  H04N11/008 ,  H04N5/211 ,  H04N7/08 ,  H04N7/085 ,  H04N7/087

摘要： A multiplex signal processing apparatus in a singal transmitting and receiving system includes at the transmitting side: a first amplitude-modulator for modulating a first carrier by a main signal to obtain a vestigial sideband, amplitude-modulated main signal; a second amplitude-modulator for modulating a second carrier which has the same frequency but differs in phase by 90.degree. from the first carrier by a multiplex signal to obtain a double sideband, amplitude-modulated multiplex signal; an inverse Nyquist filter for filtering this signal to obtain a vestigial sideband, amplitude-modulated multiplex signal; and an adder for adding the vestigial sideband, amplitude-modulated main and multiplex signals to obtain a multiplexed signal. The apparatus at the receiving side includes: a Nyquist filter for filtering the multiplexed signal; a carrier regenerator for regenerating the first and second carriers from the multiplexed signal; a main signal detector for detecting the main signal from the multiplexed signal passed through the Nyquist filter by using the first carrier; a filter for removing quadrature distortion from the multiplexed signal; and a multiplex signal detector for detecting the multiplex signal from the multiplexed signal passed through the filter by using the second carrier. By inverse Nyquist filtering the auxiliary signal in quadrature to the picture carrier, a normal synchronous receiver will produce a conventional television signal without distortion (crosstalk) caused by quadrature distortion of an auxiliary signal containing additional picture information while at the same time allowing relatively simple demodulation of the auxiliary signal in improved receivers without adding distortion.