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

WO2011079143A1 FAST RESYNCHRONIZATION FOR RECEPTION IN TIME SLICING 审中-公开
标题翻译：快速恢复在时间上的接收
公开(公告)号：WO2011079143A1
公开(公告)日：2011-06-30
申请号：PCT/US2010/061629
申请日：2010-12-21
申请人： MAXLINEAR, INC. , ANANDAKUMAR, Anand K. , RAMESH, Sridhar
发明人： ANANDAKUMAR, Anand K. , RAMESH, Sridhar
IPC分类号： H04J11/00
CPC分类号： H04N21/4305 , H04L27/2656 , H04L27/2657 , H04L27/2665 , H04L27/2671 , H04L27/2675 , H04L27/2676 , H04L27/2685 , H04L27/2695 , H04N21/4343 , H04N21/44016
摘要： A method and an apparatus for achieving fast resynchronization of received signals in a time slice in DVB-T/H systems. When the clock drift is low, the location of the symbol window can be decided based on a previous time slice. When the clock drift is high and when there are large delay spreads, the location of the symbol window can be decided based on the detected scattered pilot positions. The placement of the symbol window can further be enhanced through processing of the received TPS bits.
摘要翻译：一种用于在DVB-T / H系统的时间片中实现接收信号的快速重新同步的方法和装置。当时钟漂移低时，可以基于先前的时间片来确定符号窗口的位置。当时钟漂移很高时，并且当存在大的延迟扩展时，可以基于检测到的分散导频位置来确定符号窗口的位置。可以通过处理所接收的TPS位来进一步增强符号窗口的放置。

2. 发明申请

WO2010123573A1 CHANNEL-SENSITIVE POWER CONTROL 审中-公开
标题翻译：通道敏感功率控制
公开(公告)号：WO2010123573A1
公开(公告)日：2010-10-28
申请号：PCT/US2010/001208
申请日：2010-04-23
申请人： MAXLINEAR, INC. , QIU, James , RAMESH, Sridhar , YE, Sheng , LING, Curtis
发明人： QIU, James , RAMESH, Sridhar , YE, Sheng , LING, Curtis
IPC分类号： H04B7/204
CPC分类号： H04W52/0245 , H03G3/20 , H04B1/109 , H04B17/00 , H04L1/20 , H04L27/06 , H04W88/02 , Y02D70/00 , Y02D70/40
摘要： A communication receiver which applies signal processing for quantitatively estimating receive signal factors such as communication channel quality, signal characteristics, and overall system received bit error rate (BER)or packet error rate (PER) and which applies a general algorithm for mapping these estimated factors to control receiver performance and minimize power consumption.
摘要翻译：一种通信接收机，其应用信号处理，用于定量估计诸如通信信道质量，信号特征和总体系统接收误比特率（BER）或分组差错率（PER）的接收信号因子，并且其应用用于映射这些估计因子的通用算法以控制接收机性能并降低功耗。

3. 发明申请

WO2011066473A1 CO-OPERATIVE GEOLOCATION 审中-公开
标题翻译：合作组合
公开(公告)号：WO2011066473A1
公开(公告)日：2011-06-03
申请号：PCT/US2010/058120
申请日：2010-11-24
申请人： MAXLINEAR, INC. , WALSH, Brendan , RAMESH, Sridhar , LING, Curtis
发明人： WALSH, Brendan , RAMESH, Sridhar , LING, Curtis
IPC分类号： H04W24/00
CPC分类号： G01S19/48 , G01S19/46 , H04W64/00 , H04W84/12 , H04W84/18
摘要： A method and apparatus for extending the coverage of geolocation to indoor locations through cooperative geolocation. The method includes establishing an ad-hoc wireless network comprising a plurality of devices including a first device. The method includes receiving, at the first device, position information from the plurality of devices and determining a physical location of the first device based on the received position information. In an embodiment, the position information is transmitted in response to a request by the first device. In an embodiment, the position information may include a time of arrival of the request received by each of the plurality of devices; and the time of arrival may be associated with a GNSS time. In an embodiment, the ad-hoc wireless network may be a Wi-Fi network, which is associated with one of the IEEE 802.11 standards.
摘要翻译：一种通过合作地理位置将地理位置的覆盖范围扩展到室内位置的方法和装置。该方法包括建立包括包括第一设备的多个设备的自组织无线网络。所述方法包括在所述第一设备处接收来自所述多个设备的位置信息，以及基于所接收的位置信息来确定所述第一设备的物理位置。在一个实施例中，响应于第一设备的请求发送位置信息。在一个实施例中，位置信息可以包括由多个设备中的每一个接收到的请求的到达时间; 并且到达时间可能与GNSS时间相关联。在一个实施例中，自组织无线网络可以是与IEEE 802.11标准之一相关联的Wi-Fi网络。

4. 发明申请

WO2011003104A1 METHODS AND SYSTEMS FOR LOCATION ESTIMATION 审中-公开
标题翻译：位置估计的方法和系统
公开(公告)号：WO2011003104A1
公开(公告)日：2011-01-06
申请号：PCT/US2010/040985
申请日：2010-07-02
申请人： MAXLINEAR, INC. , RAMESH, Sridhar , LING, Curtis
发明人： RAMESH, Sridhar , LING, Curtis
IPC分类号： G01S5/06
CPC分类号： G01S5/10 , G01S5/12 , G01S11/06
摘要： A receiver system and method for determining the location of a device in a wireless network having a plurality of transmitters is provided. The method includes receiving a signal at the device, transforming the received signal into a time-domain signal having a characteristic, and computing a range of the device from each of the plurality of transmitters based on the characteristic. Additionally, the method includes determining the location of the device based on the computed ranges. In certain embodiments, the characteristic may be a time of arrival, time difference of arrival, or a signal strength, and the wireless network is a DTV broadcasting network.
摘要翻译：提供了一种用于确定具有多个发射机的无线网络中的设备的位置的接收机系统和方法。该方法包括在设备处接收信号，将接收到的信号变换为具有特征的时域信号，并且基于该特性从多个发射机中的每一个计算设备的范围。另外，该方法包括基于所计算的范围来确定设备的位置。在某些实施例中，特征可以是到达时间，到达时间差或信号强度，并且无线网络是DTV广播网络。

5. 发明申请

WO2010129038A1 SELF-CALIBRATING GAIN CONTROL SYSTEM 审中-公开
标题翻译：自校准增益控制系统
公开(公告)号：WO2010129038A1
公开(公告)日：2010-11-11
申请号：PCT/US2010/001310
申请日：2010-05-04
申请人： MAXLINEAR, INC. , QIU, James , RAMESH, Sridhar
发明人： QIU, James , RAMESH, Sridhar
IPC分类号： H03M1/00
CPC分类号： H03G3/20 , H03G3/3052
摘要： A circuit for self-calibrating a gain control system samples the output of a digital amplifier coupled in series with one or more analog amplifiers to correct errors in a discrete stepped gain control. A digital gain control circuit controls both the digital amplifier and at least one analog amplifier to produce a smooth linear and continuous gain, wherein perturbations in the digital control of gain are smoothed by a signal applied to gain control circuit by a gain step correction circuit.
摘要翻译：用于自校准增益控制系统的电路对与一个或多个模拟放大器串联耦合的数字放大器的输出进行采样，以校正离散步进增益控制中的误差。数字增益控制电路控制数字放大器和至少一个模拟放大器，以产生平滑的线性和连续增益，其中增益数字控制中的扰动被通过增益阶梯校正电路施加到增益控制电路的信号平滑。

6. 发明申请

WO2009023789A1 METHOD AND APPARATUS FOR PRESERVING DEINTERLEAVING ERASURE INFORMATION OF BLOCK INTERLEAVED CODED SIGNAL 审中-公开
标题翻译：防止块交互编码信号的擦除信息的方法和装置
公开(公告)号：WO2009023789A1
公开(公告)日：2009-02-19
申请号：PCT/US2008/073201
申请日：2008-08-14
申请人： MAXLINEAR, INC. , KANG, Sugbong , RAMESH, Sridhar
发明人： KANG, Sugbong , RAMESH, Sridhar
IPC分类号： H04L12/28
CPC分类号： H03M13/293 , H03M13/09 , H03M13/1515 , H03M13/2915 , H03M13/6356 , H04L1/0045 , H04L1/0057 , H04L1/0071
摘要： Erasure information associated with a received group of encoded and interleaved data in a digital video broadcasting system is stored in a much compacted form. An erasure flag and an address of a last byte associated with the received group of encoded and interleaved data (a record) encapsulated in an MPE-FEC column will be stored in an erasure table. All bytes in the column preceding the last byte of the record will have the same erasure flag as the last byte. Erasure information deinterleaver 524 reads out the content of the erasure table (i.e., the erasure information) in a de-interleaving fashion; and the de-interleaved erasure information 525 are then applied with the de-interleaved coded signals 511 to an FEC decoder 526 to enhance the FEC decoding performance.
摘要翻译：在数字视频广播系统中与所接收的编码和交织数据组相关联的擦除信息以非常紧凑的形式存储。擦除标志和与所接收的封装在MPE-FEC列中的编码和交织数据组（记录）相关联的最后一个字节的地址将被存储在擦除表中。在记录的最后一个字节之前的列中的所有字节将具有与最后一个字节相同的擦除标志。擦除信息解交织器524以解交织的方式读出擦除表的内容（即，擦除信息）; 然后将去交织的擦除信息525与解交织的编码信号511一起施加到FEC解码器526，以增强FEC解码性能。

7. 发明申请

WO2008103996A1 CHANNEL CHANGE LATENCY REDUCTION 审中-公开
标题翻译：频道更改减少
公开(公告)号：WO2008103996A1
公开(公告)日：2008-08-28
申请号：PCT/US2008/054915
申请日：2008-02-25
申请人： MAXLINEAR, INC. , RAMESH, Sridhar , LING, Curtis , AKELLA, Ramakrishna , LEE, Brenndon
发明人： RAMESH, Sridhar , LING, Curtis , AKELLA, Ramakrishna , LEE, Brenndon
IPC分类号： H04N7/173
CPC分类号： H04H60/43 , H04H20/26 , H04H20/40 , H04H60/11 , H04N21/41407 , H04N21/4384
摘要： A wireless communication system is enhanced to allow for low-latency channel surfing and to enable a user to quickly see the content carried over a selected channel while searching channels for desired content. The techniques for reducing the channel change latency may be implemented in a transmitter, receiver, or in a combination of transmitter and receiver. The wireless communication system is optionally a DVB-H communication system. The transmitter may generate and transmit one or more auxiliary channels, where each auxiliary channel contains reduced resolution content corresponding to one or more channels. The receiver may process the one or more auxiliary channels to present the reduced resolution content while processing the full resolution channel for display. The receiver caches portions of content from one or more non-selected channels and presents the cached content when the channel is selected while concurrently searching and processing the full resolution channel content.
摘要翻译：增强无线通信系统以允许低等待时间的信道冲浪，并且使得用户能够在搜索频道寻找所需内容的同时快速查看通过所选频道携带的内容。用于减少信道改变等待时间的技术可以在发射机，接收机或发射机和接收机的组合中实现。无线通信系统可选地是DVB-H通信系统。发射机可以生成和发送一个或多个辅助信道，其中每个辅助信道包含对应于一个或多个信道的降低的分辨率内容。接收机可以处理一个或多个辅助信道以呈现降低的分辨率内容，同时处理用于显示的全分辨率信道。接收器从一个或多个非选择的信道缓存部分内容，并且在同时搜索和处理全分辨率信道内容的同时选择信道时呈现缓存的内容。

8. 发明申请

WO2011053608A1 EDGE EQUALIZER 审中-公开
标题翻译：边缘均衡器
公开(公告)号：WO2011053608A1
公开(公告)日：2011-05-05
申请号：PCT/US2010/054168
申请日：2010-10-26
申请人： MAXLINEAR, INC. , KIM, Hyungjin , RAMESH, Sridhar , LING, Curtis
发明人： KIM, Hyungjin , RAMESH, Sridhar , LING, Curtis
IPC分类号： H04K1/10
CPC分类号： H04L25/0204 , H04L25/022 , H04L25/0232 , H04L25/03828
摘要： To compensate for roll-off while estimating a communication channel, an estimate of the channel is provided using a signal transmitted via the communication channel. The pilot tones positioned along the edges of the estimated channel are divided by the corresponding pilot tones of the received signal to generate a first number of ratios. An algorithm is thereafter applied to the first number of ratios to generate a second number of ratios associated with the non-pilot tones positioned along the edges of the estimated channel. Next, numbers that are inverse of the first and second number of ratios are applied to the pilot and non-pilot tones positioned along the edges of the estimated channel to compensate for the roll-offs in the estimated channel.
摘要翻译：为了在估计通信信道的同时补偿滚降，使用经由通信信道发送的信号来提供信道的估计。沿着估计信道的边缘定位的导频音被除以接收信号的对应导频音，以产生第一数量的比率。然后将算法应用于第一数量的比率以产生与沿着估计的信道的边缘定位的非导频音调相关联的第二数量的比率。接下来，与第一和第二比例数相反的数字被应用于沿估计信道的边缘定位的导频和非导频，以补偿估计信道中的滚降。

9. 发明申请

WO2011049837A1 DOPPLER ESTIMATOR FOR OFDM SYSTEMS 审中-公开
标题翻译：用于OFDM系统的多普勒估计器
公开(公告)号：WO2011049837A1
公开(公告)日：2011-04-28
申请号：PCT/US2010/052937
申请日：2010-10-15
申请人： MAXLINEAR, INC. , RAMESH, Sridhar
发明人： RAMESH, Sridhar
IPC分类号： H04B17/00
CPC分类号： H04L25/0228 , H04L25/0212 , H04L27/2657 , H04L27/2672 , H04L27/2675 , H04L27/2695
摘要： A method of estimating the Doppler spread of a communication channel includes computing a first sum defined by a difference between the pilot tones of a first group of N symbols and a corresponding pilot tones of a second group of N symbols preceding the first group of N symbols, computing a second sum defined by the pilot tones of the second group of N symbols, and computing a ratio of the first sum and the second sum for each of the N symbols of the first and second group of symbols to generate N ratios representative of the Doppler spread of the channel. The first sum is further defined by the square of the difference between the pilot tones of the first group of N symbols and the corresponding pilot tones of the second group of N symbols.
摘要翻译：估计通信信道的多普勒扩展的方法包括：计算由第一组N个符号的导频音调和第一组N个符号之前的N个符号的第二组的对应导频音调之间的差定义的第一和计算由第二组N个符号的导频音调定义的第二和，并且计算第一和第二组符号的N个符号中的每一个的第一和和第二和的比率，以产生代表通道的多普勒扩散。第一和进一步由N符号的第一组的导频音与第二组N个符号的相应导频音之间的差的平方确定。

10. 发明申请

WO2009021192A1 TS PACKET GROOMING 审中-公开
公开(公告)号：WO2009021192A1
公开(公告)日：2009-02-12
申请号：PCT/US2008/072645
申请日：2008-08-08
申请人： MAXLINEAR, INC. , RAMESH, Sridhar , KANG, Sugbong , LEE, Brenndon
发明人： RAMESH, Sridhar , KANG, Sugbong , LEE, Brenndon
IPC分类号： H04N5/445
CPC分类号： H04N19/66 , H04L1/0057 , H04L45/745 , H04L69/22 , H04L2001/0093 , H04N19/89 , H04N21/235 , H04N21/434 , H04N21/435 , H04N21/4382 , H04N21/4385 , H04N21/64315 , H04N21/83
摘要： Received data packets are groomed to improve performance of MPEG-2 transport stream packet in a digital video broadcasting system. Multitude of crosschecking techniques are applied to ensure that crucial pieces of information such as the packet identifier (PID) field, the continuity counter (CC) field, table ID, section length, IP header checksum, table and frame boundaries, application data table size are corrected if necessary.
摘要翻译：接收的数据分组被修改以改善数字视频广播系统中的MPEG-2传输流分组的性能。应用多种交叉检查技术来确保诸如分组标识符（PID）字段，连续性计数器（CC）字段，表ID，段长度，IP报头校验和，表和帧边界，应用数据表大小等关键信息必要时进行修正。

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