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. 发明申请

US20070116144A1 Optimization technique for layered modulation 有权
公开(公告)号：US20070116144A1
公开(公告)日：2007-05-24
申请号：US11655001
申请日：2007-01-18
申请人： Weizheng Wang , Guangcai Zhou , Tung-Sheng Lin , Ernest Chen , Joseph Santoru , William Lindsey
发明人： Weizheng Wang , Guangcai Zhou , Tung-Sheng Lin , Ernest Chen , Joseph Santoru , William Lindsey
IPC分类号： H04L27/00
CPC分类号： H04L1/20 , H04L1/208 , H04L27/183 , H04W52/42
摘要： A method and apparatus for optimizing a system for transmitting a layered modulated signal is disclosed. The method comprises the steps of defining the system in terms of a set of system parameters, including an optimal power separation S between a power of a first modulation layer and a power of a second modulation layer and a required system carrier-to-noise ratio (CNRS), determining an optimal power separation S to minimize the error rate of a lower layer modulated signal BERL, and selecting the remaining system parameters in the set of system parameters using the determined optimal power separation S.

2. 发明申请

US20070116108A1 Equalizers for layered modulated and other signals 有权
标题翻译：均衡器用于分层调制和其他信号
公开(公告)号：US20070116108A1
公开(公告)日：2007-05-24
申请号：US11656662
申请日：2007-01-22
申请人： Ernest Chen , Tung-Sheng Lin , Weizheng Wang , William Lindsey
发明人： Ernest Chen , Tung-Sheng Lin , Weizheng Wang , William Lindsey
IPC分类号： H03K5/159 , H04B1/10
CPC分类号： H04L27/3488 , H04L25/03019 , H04L2025/03401 , H04L2025/0342 , H04L2025/0349
摘要： A method and apparatus for equalizing digital data signals is disclosed. The method comprises the steps of demodulating and decoding an input signal having input data to produce a data output, remodulating the data output to produce a training sequence including an idealized input signal, wherein the training sequence is comprised of adjacent symbols in the input data, and generating equalizer parameters from the training sequence. The apparatus comprises a demodulator (for demodulating an input signal to produce a data output), a modulator communicatively coupled to the demodulator (for remodulating the data output to produce a training sequence including an idealized input signal wherein the training sequence is comprised of adjacent symbols in the input data), and a parameter generation module communicatively coupled to the modulator (for generating equalizer parameters from the training sequence).
摘要翻译：公开了一种用于均衡数字数据信号的方法和装置。该方法包括以下步骤：解调和解码具有输入数据的输入信号以产生数据输出，重新调制数据输出以产生包括理想化输入信号的训练序列，其中训练序列由输入数据中的相邻符号组成，并从训练序列生成均衡器参数。该装置包括解调器（用于解调输入信号以产生数据输出），通信地耦合到解调器的调制器（用于重新调制数据输出以产生包括理想化输入信号的训练序列，其中训练序列由相邻符号组成在输入数据中）以及通信地耦合到调制器的参数生成模块（用于从训练序列生成均衡器参数）。

3. 发明申请

US20050041763A1 Unblind equalizer architecture for digital communication systems 有权
标题翻译：用于数字通信系统的无盲均衡器架构
公开(公告)号：US20050041763A1
公开(公告)日：2005-02-24
申请号：US10691032
申请日：2003-10-22
申请人： Weizheng Wang , Tung-Sheng Lin , Ernest Chen , William Lindsey
发明人： Weizheng Wang , Tung-Sheng Lin , Ernest Chen , William Lindsey
IPC分类号： H04B7/185 , H04B1/10
CPC分类号： H04B7/18515
摘要： A method and apparatus for equalizing digital data signals is disclosed. The method comprises the steps of demodulating and decoding an input signal having input data to produce a data output, remodulating the data output to produce a pseudo-training sequence including an idealized input signal, and generating equalizer parameters from the pseudo-training sequence. The apparatus comprises a demodulator for demodulating an input signal to produce a data output, a modulator, communicatively coupled to the demodulator, for remodulating the data output to produce a pseudo-training sequence including an idealized input signal, and a parameter generation module, communicatively coupled to the modulator for generating equalizer parameters from the pseudo-training sequence.
摘要翻译：公开了一种用于均衡数字数据信号的方法和装置。该方法包括以下步骤：解调和解码具有输入数据的输入信号以产生数据输出，重新调制数据输出以产生包括理想化输入信号的伪训练序列，以及从伪训练序列生成均衡器参数。该装置包括用于解调输入信号以产生数据输出的解调器，通信地耦合到解调器的调制器，用于重新调制数据输出以产生包括理想化输入信号的伪训练序列和参数生成模块，通信地耦合到用于从伪训练序列产生均衡器参数的调制器。

4. 发明申请

US20060153315A1 Lower complexity layered modulation signal processor 有权
公开(公告)号：US20060153315A1
公开(公告)日：2006-07-13
申请号：US10532632
申请日：2003-10-10
申请人： Ernest Chen , Weizheng Wang , Guangcal Zhou , Tung-Sheng Lin , Joseph Santoru
发明人： Ernest Chen , Weizheng Wang , Guangcal Zhou , Tung-Sheng Lin , Joseph Santoru
IPC分类号： H04L27/20
CPC分类号： H04L27/3488 , H04B7/18515 , H04B17/318 , H04L1/20 , H04L27/183 , H04L27/227 , H04L27/366 , H04L2027/0061
摘要： A method and apparatus for transmitting and receiving a coded signal having an upper layer signal and a lower layer signal is disclosed. The method comprises the steps of combining the upper layer signal and the lower layer signal, encoding the combined upper layer signal and lower layer signal, delaying the upper layer signal, modulating the delayed upper layer signal, modulating the lower layer signal, transmitting the delayed upper layer signal and transmitting the lower layer signal. The apparatus comprises an encoder, for encoding a combined upper layer signal and lower layer signal, a delay, communicatively coupled to the encoder, for delaying the upper layer signal, a first modulator, for modulating the delayed upper layer signal, a second modulator, for modulating the lower layer signal, a transmitter, communicatively coupled to the first modulator, for transmitting the delayed upper layer signal, and a second transmitter, communicatively coupled to the second modulator.

5. 发明申请

US20060215785A1 Simplified scrambling scheme for satellite broadcasting systems 有权
标题翻译：卫星广播系统的简化扰频方案
公开(公告)号：US20060215785A1
公开(公告)日：2006-09-28
申请号：US10568384
申请日：2004-08-27
申请人： Ernest Chen , Dennis Lai , Tung-Sheng Lin , William Lindsey , Shamik Maitra , Joseph Santoru , Guangcai Zhou
发明人： Ernest Chen , Dennis Lai , Tung-Sheng Lin , William Lindsey , Shamik Maitra , Joseph Santoru , Guangcai Zhou
IPC分类号： H04L27/12
CPC分类号： H04L25/03866 , H04B7/18523 , H04L27/36 , H04N21/23895 , H04N21/4382 , H04N21/43853 , H04N21/6143 , H04N21/6193
摘要： A simplified scrambling scheme that unifies all signals of a satellite broadcasting system, including frame header (404), frame body (402) and pilot symbols (408) with a common reference phase. This results in the simplification and increased flexibility of the receiver front-end design without affecting the overall system performance. In many current communications systems with frame headers and pilot symbols, the phases of frame headers and pilot syrnbols are not designed to be aligned with any constellation points of the modulated data from the frame body. This scrambling scheme takes into account possible impact due to irregular phase changes between frame headers/pilot symbols and modulated data.
摘要翻译：一种简化的加扰方案，其将具有公共参考相位的卫星广播系统的所有信号（包括帧头部（404）），帧体（402）和导频符号（408）统一起来。这导致了接收机前端设计的简化和增加的灵活性，而不会影响整个系统的性能。在具有帧头和导频符号的许多当前通信系统中，帧头和导频符号的相位不被设计为与来自帧体的调制数据的任何星座点对准。该加扰方案考虑到由帧头/导频符号和调制数据之间的不规则相位变化引起的可能的影响。

6. 发明申请

US20050229230A1 Shifted channel characteristics for mitigating co-channel interference 有权
标题翻译：改变通道特性，以减轻同频干扰
公开(公告)号：US20050229230A1
公开(公告)日：2005-10-13
申请号：US11102983
申请日：2005-04-11
申请人： Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
发明人： Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
IPC分类号： H04B7/185 , H04L9/00 , H04N5/21 , H04N7/16 , H04N7/167 , H04N7/173 , H04N5/445
CPC分类号： H04N5/211 , H04B7/18513 , H04B7/1858 , H04N7/16 , H04N7/163 , H04N7/1675 , H04N7/17318 , H04N21/2347 , H04N21/4405 , H04N21/6143
摘要： Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises shifting a characteristic of the first signal with respect to a like characteristic of the second signal to mitigate co-channel interference, and transmitting the first signal and the second signal over different channels of the communication system.
摘要翻译：公开了用于最小化通信系统中的同信道干扰的方法和装置。根据本发明的方法包括相对于第二信号的相似特性移动第一信号的特性以减轻同信道干扰，以及通过通信系统的不同信道发送第一信号和第二信号。

7. 发明申请

US20050226414A1 Methods and apparatuses for minimizing co-channel interference 有权
标题翻译：用于最小化同频道干扰的方法和装置
公开(公告)号：US20050226414A1
公开(公告)日：2005-10-13
申请号：US11103307
申请日：2005-04-11
申请人： Lin-Nan Lee , Feng-Wen Sun , Adam Ancken , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
发明人： Lin-Nan Lee , Feng-Wen Sun , Adam Ancken , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
IPC分类号： H04B7/185 , H04L9/00 , H04N5/21 , H04N7/16 , H04N7/167 , H04N7/173
CPC分类号： H04N5/211 , H04B7/18513 , H04B7/1858 , H04N7/16 , H04N7/163 , H04N7/1675 , H04N7/17318 , H04N21/2347 , H04N21/4405 , H04N21/6143
摘要： Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises scrambling a first frame using a first scrambling code, attaching a first header to the first frame to create the first signal, scrambling a second frame using a second scrambling code, attaching a second header to the second frame to create the second signal, and transmitting the first signal and the second signal over different channels of the communication system.
摘要翻译：公开了用于最小化通信系统中的同信道干扰的方法和装置。根据本发明的方法包括使用第一扰码对第一帧进行加扰，将第一报头附加到第一帧以产生第一信号，使用第二扰码对第二帧进行加扰，将第二报头附加到第二帧以产生第二信号，以及通过通信系统的不同信道发送第一信号和第二信号。

8. 发明申请

US20070074242A1 Methods and apparatuses for determining scrambling codes for signal transmission 有权
标题翻译：用于确定信号传输的扰码的方法和装置
公开(公告)号：US20070074242A1
公开(公告)日：2007-03-29
申请号：US11510244
申请日：2006-08-25
申请人： Judith Wang , Guangcai Zhou , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Tung-Sheng Lin
发明人： Judith Wang , Guangcai Zhou , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Tung-Sheng Lin
IPC分类号： H04N7/167 , H04N7/16
CPC分类号： H04K1/00 , H04B2201/709709 , H04J13/0029 , H04J13/10 , H04L1/0057 , H04L1/0072 , H04L25/03866 , H04N7/1675 , H04N21/6112 , H04N21/6143
摘要： Methods and apparatuses for determining scrambling codes for minimizing co-channel interference in a communication system. A method in accordance with the present invention comprises defining at least one initial default sequence, generating a scrambling code, scrambling a signal using the generated scrambling code, comparing the scrambled signal with all other scrambled signals meeting a specified criterion, and saving the scrambling code word if the comparison determines that the signal scrambled with the scrambling code also meets the specified criterion. The scrambling codes can be compared with each other for cross-correlation purposes to determine whether they meet the specified criterion based on laboratory testing.
摘要翻译：用于确定用于使通信系统中的同信道干扰最小化的扰码的方法和装置。根据本发明的方法包括定义至少一个初始默认序列，产生扰码，使用所生成的扰码对信号进行加扰，将加扰信号与满足指定标准的所有其他加扰信号进行比较，并且保存扰码如果比较确定用扰码加扰的信号也满足指定的标准。可以将扰码相互比较以进行互相关，以确定它们是否符合基于实验室测试的指定标准。

9. 发明申请

US20050226418A1 Physical layer header scrambling in satellite broadcast systems 有权
标题翻译：卫星广播系统中的物理层报头扰频
公开(公告)号：US20050226418A1
公开(公告)日：2005-10-13
申请号：US11102958
申请日：2005-04-11
申请人： Lin-Nan Lee , Feng-Wen Sun , Adam Ancken , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
发明人： Lin-Nan Lee , Feng-Wen Sun , Adam Ancken , Joseph Santoru , Ernest Chen , Shamik Maitra , Dennis Lai , Guangcai Zhou , Tung-Sheng Lin
IPC分类号： H04B7/185 , H04L9/00 , H04N5/21 , H04N7/16 , H04N7/167 , H04N7/173
CPC分类号： H04N5/211 , H04B7/18513 , H04B7/1858 , H04N7/16 , H04N7/163 , H04N7/1675 , H04N7/17318 , H04N21/2347 , H04N21/4405 , H04N21/6143
摘要： Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises scrambling a first header of the first signal using a first scrambling code, scrambling a second header of the second signal using a second scrambling code, and transmitting the first signal and the second signal with the scrambled first header and the scrambled second header over different channels of the communication system.
摘要翻译：公开了用于最小化通信系统中的同信道干扰的方法和装置。根据本发明的方法包括使用第一扰码对第一信号的第一报头进行加扰，使用第二加扰码对第二信号的第二报头进行加扰，并且以第一加扰方式发送第一信号和第二信号报头和通信系统的不同信道上的加扰的第二报头。

10. 发明授权

US09832532B1 Interactive save and purchase of content and products 有权
公开(公告)号：US09832532B1
公开(公告)日：2017-11-28
申请号：US12389669
申请日：2009-02-20
申请人： Keith Agabob , Adam Labelson , Patricia Gottesman , Pete Caramanica , Ernest Chen
发明人： Keith Agabob , Adam Labelson , Patricia Gottesman , Pete Caramanica , Ernest Chen
IPC分类号： H04N21/482 , H04N21/478 , H04N21/4784
CPC分类号： H04N21/4826 , G06Q30/00 , H04N21/41407 , H04N21/47815 , H04N21/4784
摘要： Advertisements are presented to users via one or more delivery methods, such as a cable-television network and the Internet. An interactive product information screen allows the user to review information about a product to be purchased and, if desired, save purchase information associated with the user and the product at a central server. Subsequently, the user requests to review the saved purchase information either via the cable-television network or the Internet and can complete the transaction using either avenue.

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