专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4908859A Receiver access interface to service components in television channel 失效
公开(公告)号：US4908859A
公开(公告)日：1990-03-13
申请号：US147167
申请日：1988-01-22
申请人： Christopher J. Bennett , James M. Hobza , Ron D. Katznelson , Gordon K. Walker
发明人： Christopher J. Bennett , James M. Hobza , Ron D. Katznelson , Gordon K. Walker
IPC分类号： H04N7/16
CPC分类号： H04N7/16
摘要： A receiver interface system for enabling an operator to access different types of services in a like manner, wherein the services contain different combinations of service components received by a receiver in different portions of one or more different frequency channels, such as television channels. The system includes a plurality of separate interface channels for carrying different types of services containing different combinations of the service components; switching means for selecting a said service, wherein the switching means is coupled to the interface channels for accessing the respective interface channels in a like manner; and a decoder coupled to the receiver and the interface channels for accessing the components of said selected service received by the receiver in different portions of one or more different frequency channels to provide said selected service on the interface channel carrying the selected service. The decoder includes a service definition table defining access to different combinations of the service components by each of a plurality of the separate interface channels to thereby define access to different types of services by the separate interface channels; and a channel configuration map defining access to the frequency channels by the separate interface channels for enabling the different combinations of service components for each of the services to be accessed in accordance with the service definition table. The service definition table may include means for defining access to different service components located in the same portion of a given frequency channel at different times and/or may define access to different service components located in the following portions of the given frequency channel with respect to a television signal received over the given frequency channel: the video information interval, the horizontal blanking interval, the vertical blanking interval and the subcarrier of the given frequency.

2. 发明授权

US4809274A Digital audio companding and error conditioning 失效
标题翻译：数字音频压扩和错误调节
公开(公告)号：US4809274A
公开(公告)日：1989-02-28
申请号：US091911
申请日：1987-09-04
申请人： Gordon K. Walker , Ron D. Katznelson , Paul Moroney , Karl E. Moerder
发明人： Gordon K. Walker , Ron D. Katznelson , Paul Moroney , Karl E. Moerder
IPC分类号： H04B14/04 , H03G7/00 , H03K7/02 , H03M20060101 , H03M7/30 , H04B1/64 , H04B15/00 , H04H20/88 , H04L1/08 , G06F11/10
CPC分类号： H03G7/007 , H03M7/3053
摘要： A system for companding digital audio signal samples processes the digital audio signal samples to correct errors induced by the compression and expansion processes. These errors are calculated prior to compressing the samples. Such errors are calculated in accordance with a predetermined compression process and a predetermined expansion process; and the digital audio signal samples are corrected in accordance with such calculations prior to compression. The compression process includes providing a 3-bit gain word for a block of 70 samples. The gain word is computed in accordance with the position of the most significant "1" bit in the sample(s) having the peak magnitude. Each individual sample is processed in accordance with the block gain word to compress the sample by reducing the number of magnitude bits. The error calculation process includes calculating an error signal by subtracting a calculated reproduced digital audio signal sample from the digital audio signal sample to be compressed, filtering the error signal by noise-spectral filtering and adding the filtered error signal to the next-providing digital audio signal sample to provide a corrected digital audio signal sample for compression. The error calculation process also includes calculating an error value based upon the effect of using a single gain word for compressing a block of samples. The error value is subtracted from the corrected digital audio signal sample prior to compression. The gain word is forward error corrected by (5,1) encoding to enable detection and correction of both single-bit and double-bit errors in transfer by majority voting. The sign bit and the most significant magnitude bits of the compressed samples are forward error corrected to enable detection and correction of single-bit errors in transfer and to enable detection and concealment of double-bit errors in transfer.
摘要翻译：用于压缩数字音频信号样本的系统处理数字音频信号样本以校正由压缩和扩展过程引起的误差。在压缩样品之前计算这些误差。这样的误差根据预定的压缩处理和预定的扩展处理来计算; 并且在压缩之前根据这样的计算校正数字音频信号样本。压缩过程包括为70个样本的块提供3位增益字。根据具有峰值幅度的采样中最高有效“1”位的位置来计算增益字。根据块增益字来处理每个单独的样本，以通过减少幅度比特数来压缩样本。误差计算处理包括通过从要压缩的数字音频信号样本中减去计算出的再现数字音频信号样本来计算误差信号，通过噪声频谱滤波对误差信号进行滤波，并将滤波后的误差信号加到下一个提供的数字音频信号采样以提供用于压缩的校正数字音频信号样本。误差计算处理还包括基于使用单个增益字来压缩采样块的效果来计算误差值。在压缩之前从校正的数字音频信号样本中减去误差值。增益字是通过（5,1）编码进行前向误差校正，以便通过多数表决来传输单位和双位错误的检测和校正。压缩样本的符号位和最高有效幅度位是前向纠错的，以便能够检测和校正传输中的单位错误，并能够检测和隐藏传输中的双位错误。

3. 发明授权

US4736420A Video scrambling by segmenting video information lines 失效
标题翻译：通过视频信息线分割视频加扰
公开(公告)号：US4736420A
公开(公告)日：1988-04-05
申请号：US909763
申请日：1986-09-19
申请人： Ron D. Katznelson , Gordon K. Walker , Paul Moroney
发明人： Ron D. Katznelson , Gordon K. Walker , Paul Moroney
IPC分类号： H04K1/06 , H04N7/169 , H04N7/167
CPC分类号： H04N7/1696
摘要： A system for scrambling a video signal having a plurality of horizontal lines, each of which includes a video information portion and a non-video information portion. The scrambling system includes a memory; means for storing the video information portion of each video signal line in the memory; and means for forming scrambled horizontal lines by retrieving each of a plurality of said stored video information lines in a plurality of segments preceded by a non-video segment and separated by non-video segment(s). The retrieval means include means for varying the respective durations of the retrieved video information segments in individual scrambled horizontal lines in accordance with an encryption keystream; and means for varying the total duration of the non-video segments for individual scrambled horizontal lines in accordance with a predetermined timing pattern. A complementary descrambling system also is disclosed.
摘要翻译：一种用于对具有多个水平行的视频信号进行加扰的系统，每个水平行包括视频信息部分和非视频信息部分。加扰系统包括存储器; 用于将每个视频信号线的视频信息部分存储在存储器中的装置; 以及用于通过在由非视频段前面并由非视频段分隔的多个段中检索多个所述存储的视频信息行中的每一个来形成加扰的水平线的装置。检索装置包括用于根据加密密钥流改变检索到的各个加扰水平行中的视频信息段的持续时间的装置; 以及用于根据预定定时模式改变针对各个加扰水平线的非视频段的总持续时间的装置。还公开了补充解扰系统。

4. 发明授权

US5313215A Satellite identification and antenna alignment 失效
标题翻译：卫星识别和天线对准
公开(公告)号：US5313215A
公开(公告)日：1994-05-17
申请号：US911460
申请日：1992-07-10
申请人： Gordon K. Walker , John K. Taylor
发明人： Gordon K. Walker , John K. Taylor
IPC分类号： H01Q1/12 , H01Q3/00 , H04B7/185
CPC分类号： H01Q1/1257 , H01Q3/005
摘要： A satellite identification system for identifying a communications satellite from which a broadcast communication signal is being received by an antenna, wherein the communication signal includes data identifying a programmer that broadcast the communication signal and/or an uplink location from which the communication signal is broadcast. The system includes a memory storing a look-up table correlating satellite identification data for a plurality of satellites with the programmer identification data and/or the uplink location data for the plurality of satellites; means for detecting the programmer identification data and/or the uplink location data from a communication signal received by the antenna from one of the plurality of satellites; and means for accessing the look-up table in response to the detected programmer identification data and/or the uplink location data to retrieve the satellite identification data for the satellite from which the communication signal is received. The satellite identification system is included in a satellite antenna alignment system for automatically identifying reference satellites. The satellite antenna alignment system also automatically aligns the antenna to a position at which optimum quality is achieved for a communication signal received from a reference satellite; and the alignment positions of the antenna are measured and stored for at least two reference satellites to which the antenna is automatically aligned. Current correlated data is provided in the look-up tables by detecting updated correlated data in a communication signal received by the antenna and loading the updated correlated data into the look-up tables.
摘要翻译：一种用于识别通过天线正在接收广播通信信号的通信卫星的卫星识别系统，其中通信信号包括识别广播通信信号的编程器和/或广播通信信号的上行链路位置的数据。该系统包括：存储器，用于存储将多个卫星的卫星识别数据与用于多个卫星的编程器标识数据和/或上行链路位置数据相关联的查找表; 用于从所述天线从所述多个卫星之一接收的通信信号中检测所述编程器识别数据和/或所述上行链路位置数据的装置; 以及用于响应于检测到的编程器标识数据和/或上行链路位置数据访问查找表的装置，以检索用于从其接收通信信号的卫星的卫星识别数据。卫星识别系统包括在卫星天线对准系统中，用于自动识别参考卫星。卫星天线对准系统还自动将天线对准到从参考卫星接收的通信信号达到最佳质量的位置; 并测量和存储天线的对准位置，用于天线自动对准的至少两个参考卫星。通过检测由天线接收的通信信号中的更新的相关数据并将更新的相关数据加载到查找表中，在查找表中提供当前相关数据。

5. 发明申请

US20100260266A1 FEC ALTERNATIVES TO THE REED-SOLOMON OUTER CODE 审中-公开
标题翻译：反向代替外部代码的替代方案
公开(公告)号：US20100260266A1
公开(公告)日：2010-10-14
申请号：US12756922
申请日：2010-04-08
申请人： RALPH A. GHOLMIEH , Gordon K. Walker
发明人： RALPH A. GHOLMIEH , Gordon K. Walker
IPC分类号： H04N11/02
CPC分类号： H04L1/0075 , H04L1/005 , H04L1/0065 , H04L1/0066
摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media for encoding data for transmission on a communication link of a content delivery system includes: receiving data to be communicated to a device, the data received as a multiple data link layer packets of a logical channel carrying broadcast data; encoding the multiple data link layer packets of the logical channel as one outer codeword using an outer code at an outer code rate; encoding symbols of the outer codeword with an inner code; and indicating the outer code and the outer code rate through signaling, including setting a first value for a first field of a control channel and setting a second value for a second field of the control channel, wherein the first value is determined by the outer code, and the second value is determined by the outer code rate.
摘要翻译：方法，系统和装置，包括在计算机存储介质上编码的用于编码数据以在内容传送系统的通信链路上传输的计算机程序包括：接收要传送到设备的数据，作为多个数据链路层分组携带广播数据的逻辑信道; 使用外部码率的外部码将所述逻辑信道的多个数据链路层分组编码为一个外部码字; 用内码对外码字的码元进行编码; 以及通过信令指示外部码和外部码率，包括为控制信道的第一字段设置第一值并为控制信道的第二字段设置第二值，其中第一个值由外部码，第二个值由外码率决定。

6. 发明授权

US08355354B2 Local and wide-area transmissions in a wireless broadcast network 有权
标题翻译：无线广播网络中的本地和广域传输
公开(公告)号：US08355354B2
公开(公告)日：2013-01-15
申请号：US12646520
申请日：2009-12-23
申请人： Rajiv Vijayan , Fuyun Ling , Gordon K. Walker , Murali R. Chari , Ashok Mantravadi , Anand D. Subramaniam
发明人： Rajiv Vijayan , Fuyun Ling , Gordon K. Walker , Murali R. Chari , Ashok Mantravadi , Anand D. Subramaniam
IPC分类号： H04H20/71
CPC分类号： H04L5/0041 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L12/189 , H04W72/005
摘要： To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
摘要翻译：为了在无线广播网络中广播具有不同层次的不同类型的传输，每个基站根据第一模式（或编码和调制方案）处理广域传输的数据，以产生广域的数据符号根据第二模式传输和处理用于本地传输的数据，以产生用于本地传输的数据符号。分别基于广域和本地传输的期望覆盖来选择第一和第二模式。基站还为本地和广域传输生成导频和开销信息。用于本地和广域传输的数据，导频和开销信息被复用到它们的传输跨度，其可以是不同组的频率子带，不同时间段或不同时间段中的不同子带组。多于两种不同类型的传输也可以被复用和广播。

7. 发明授权

US4752953A Digital audio scrambling system with pulse amplitude modulation 失效
标题翻译：具有脉冲幅度调制的数字音频加扰系统
公开(公告)号：US4752953A
公开(公告)日：1988-06-21
申请号：US895150
申请日：1986-08-11
申请人： Woo H. Paik , Jerrold A. Heller , Gordon K. Walker
发明人： Woo H. Paik , Jerrold A. Heller , Gordon K. Walker
IPC分类号： G11B20/10 , G11B20/18 , H04K1/02 , H04N9/802 , H04L9/00
CPC分类号： H04N9/802 , G11B20/10527 , G11B20/1809 , H04K1/02
摘要： In a system for scrambling an audio signal for transmission with a video signal having non-video information intervals, an analog audio signal is converted into a scrambled compressed digital audio signal; individual bits from the scrambled compressed digital audio signal are combined to provide 2-bit digital words; each digital word is converted into an 8-bit digital PAM data signal having a binary value bearing a predetermined relationship to the binary value of the converted 2-bit digital word; the 8-bit digital PAM data signal is converted into a 4-level PAM analog signal; and the PAM analog signals are inserted into the non-video information intervals of the video signal for transmission. A descrambling system descrambles the 4-level PAM analog signals by a complementary scheme.
摘要翻译：在具有用于具有非视频信息间隔的视频信号进行发送的音频信号加扰的系统中，模拟音频信号被转换成加扰的压缩数字音频信号; 来自加扰的压缩数字音频信号的各个比特被组合以提供2比特的数字字; 每个数字字被转换成具有与转换的2位数字字的二进制值具有预定关系的二进制值的8位数字PAM数据信号; 8位数字PAM数据信号被转换为4级PAM模拟信号; 并将PAM模拟信号插入视频信号的非视频信息间隔中进行传输。解扰系统通过互补方案解扰4电平PAM模拟信号。

8. 发明授权

US5463403A Automatic adjustment of receiver apparatus based on channel-bit-error-rate-affected parameter measurement 失效
标题翻译：基于信道比特率影响参数测量自动调整接收机设备
公开(公告)号：US5463403A
公开(公告)日：1995-10-31
申请号：US180574
申请日：1994-01-12
申请人： Gordon K. Walker , Paul Moroney
发明人： Gordon K. Walker , Paul Moroney
IPC分类号： H04B1/18 , H01Q1/12 , H01Q3/00 , H04B1/10 , H04B1/16 , H04H20/00
CPC分类号： H01Q1/125 , H01Q3/005 , H04B1/1027 , H04B1/16
摘要： Alignment of an antenna and a polarizer for the antenna are automatically adjusted and the frequency setting of a frequency-tunable receiver is automatically adjusted while receiving a broadcast communication signal that is forward-error-correction coded by processing the forward-error-correction code of the received signal to measure a channel-bit-error-rate-affected parameter for the received signal; by realigning the antenna and the polarizer from their respective initial positions in response to the measured parameter until the measured parameter is minimized; and by retuning the receiver from its initial frequency setting in response to the measured parameter until the measured parameter is minimized. A Viterbi decoder processes the forward-error-correction code of the received signal to compute path metrics affected by the bit-error rate of the received signal and normalizes the computed path metrics; and a counter counts the normalizations over fixed intervals to measure a path metric normalization rate as the measured parameter.
摘要翻译：自动调整用于天线的天线和偏振器的对准，并且在接收通过处理前向纠错码的前向纠错编码的广播通信信号的同时自动调整频率可调接收机的频率设置所接收的信号用于测量接收信号的信道 - 比特误码率影响参数; 通过响应于测量的参数将天线和偏振器从其各自的初始位置重新对准，直到测量的参数最小化; 并且通过响应于测量的参数将接收器从其初始频率设置重新调度，直到所测量的参数被最小化。维特比解码器处理接收信号的前向纠错码以计算受接收信号的误码率影响的路径度量，并对计算出的路径量度进行归一化; 并且计数器对固定间隔的归一化进行计数，以测量路径度量标准化率作为测量参数。

9. 发明授权

US08655294B2 Method and apparatus for position signal assisted window placement 失效
标题翻译：位置信号辅助窗口放置的方法和装置
公开(公告)号：US08655294B2
公开(公告)日：2014-02-18
申请号：US12787062
申请日：2010-05-25
申请人： Gordon K. Walker , Murali R. Chari , Fuyun Ling
发明人： Gordon K. Walker , Murali R. Chari , Fuyun Ling
IPC分类号： H04B1/16
CPC分类号： H04L27/2688 , H04L1/20 , H04L25/0216 , H04L27/2665 , H04L27/2695
摘要： Methods and circuits for positioning a signal sampling window within a wireless receiver device for use in a multi-transmitter wireless broadcast network include generating a long channel model based upon a signal identifying transmitters that can be processed without aliases, and positioning the signal sampling window based upon the long channel model. For example, in a MediaFLO® broadcast, the long channel model may be generated by receiving positioning pilot channel (PPC) signals. Positions for the signal sampling window may be determined by identifying hypothetical signal sampling window positions, calculating signal to interference and noise ratio (SINR) values for each identified hypothetical, and selecting the hypothetical with the best SINR. Using a long channel model to position the signal sampling window may provide improved window placement, reduce destructive aliasing, and reduce a time guard in the window placement. The long channel model may be used in conjunction with terrain databases.
摘要翻译：用于在无线接收机设备内定位用于多发射机无线广播网络中的信号采样窗口的方法和电路包括基于识别可以在没有别名的情况下被处理的发射机的信号来生成长信道模型，并且基于信号采样窗口在长渠道模式。例如，在MediaFLO广播中，可以通过接收定位导频信道（PPC）信号来生成长信道模型。信号采样窗口的位置可以通过识别假设信号采样窗口位置，为每个识别的假设计算信号与干扰和噪声比（SINR）值并选择具有最佳SINR的假设来确定。使用长通道模型来定位信号采样窗口可以提供改进的窗口放置，减少破坏性混叠，并减少窗口位置中的时间守卫。长通道模型可以与地形数据库结合使用。

10. 发明申请

US20110085499A1 SYSTEM AND METHOD FOR THE SIMULTANEOUS TRANSMISSION AND RECEPTION OF FLO AND FIO-EV DATA 审中-公开
标题翻译：同时传输和接收FLO和FIO-EV数据的系统和方法
公开(公告)号：US20110085499A1
公开(公告)日：2011-04-14
申请号：US12876962
申请日：2010-09-07
申请人： KRISHNA K. MUKKAVILLI , Ralph A. Gholmieh , Durk L. van Veen , Raghuraman Krishnamoorthi , Neville J. Meijers , Gordon K. Walker
发明人： KRISHNA K. MUKKAVILLI , Ralph A. Gholmieh , Durk L. van Veen , Raghuraman Krishnamoorthi , Neville J. Meijers , Gordon K. Walker
IPC分类号： H04W40/00
CPC分类号： H04H20/30 , H04H60/91 , H04N21/235 , H04N21/2362 , H04N21/2389 , H04N21/435 , H04N21/4382 , H04N21/4383 , H04N21/4385 , H04W72/005 , H04W72/1273
摘要： A system for transmitting a data stream, includes a transmitter for broadcasting a radio frequency communication signal comprising at least one superframe having at least a first data stream encoded therein, and overhead information carried in the superframe, the overhead information comprising a control channel, the control channel having control channel information for separating the at least one first data stream from any other data streams encoded in the at least one superframe. A system for receiving data includes a receiver configured to receive a radio frequency communication signal comprising at least one superframe having at least a first data stream encoded therein; and overhead information carried in the superframe, the overhead information comprising a control channel, the control channel having control channel information for separating the at least one first data stream from any other data streams encoded in the at least one superframe.
摘要翻译：一种用于发送数据流的系统，包括：发射机，用于广播包括至少一个其中编码的至少一个第一数据流的超帧的射频通信信号和在该超帧中承载的开销信息，所述开销信息包括控制信道，控制信道具有用于将至少一个第一数据流与在至少一个超帧中编码的任何其他数据流分离的控制信道信息。一种用于接收数据的系统包括：接收机，被配置为接收射频通信信号，所述射频通信信号包括至少一个其中编码有至少第一数据流的超帧; 以及在所述超帧中承载的开销信息，所述开销信息包括控制信道，所述控制信道具有用于将所述至少一个第一数据流与在所述至少一个超帧中编码的任何其它数据流分离的控制信道信息。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式