公开(公告)号：US20070296684A1

公开(公告)日：2007-12-27

申请号：US11471794

申请日：2006-06-21

申请人： Vishal Thomas ,  Prasanna Desai

发明人： Vishal Thomas ,  Prasanna Desai

IPC分类号： G09G3/36

CPC分类号： G09G3/3426 ,  G09G2330/021 ,  G09G2340/0407 ,  G09G2340/0464

摘要： According to some embodiments, an apparatus, a system and a method are provided to reduce a backlit area of a display screen and resize an image to fit in the backlit area.

摘要翻译： 根据一些实施例，提供了一种装置，系统和方法，以减少显示屏幕的背光区域并且调整图像大小以适合背光区域。

公开(公告)号：US06693882B1

公开(公告)日：2004-02-17

申请号：US09238672

申请日：1999-01-26

申请人： Jian Gu ,  Prasanna Desai

发明人： Jian Gu ,  Prasanna Desai

IPC分类号： H04J314

CPC分类号： H04L27/22 ,  H04L2027/0032 ,  H04L2027/0053 ,  H04L2027/0067 ,  H04L2027/0093

摘要： A method and an apparatus for detecting a frequency correction burst embedded in a signal which includes ordered samples. The method comprises the following: (a) correlating K sequences of the ordered samples with a predetermined waveform to produce K correlation outputs, each of the K correlation outputs corresponding to one of the K sequences, having a magnitude and being associated with an order index, K being an integer, the predetermined waveform corresponding to the frequency correction burst; (b) storing the K correlation outputs in a buffer according to the order indices; and (c) estimating a parameter based on the K correlation outputs, the parameter indicating detection of the frequency correction burst. The estimated parameter includes a frequency error and an ending time of a frequency correction burst. A quality metric associated with each frequency error is also computed.

摘要翻译： 一种用于检测嵌入在包括有序样本的信号中的频率校正突发的方法和装置。 该方法包括以下步骤：（a）将有序样本的K个序列与预定波形相关以产生K个相关输出，K个相关输出中的每一个对应于K个序列之一，具有幅度并与订单索引相关联 K为整数，对应于频率校正脉冲串的预定波形; （b）根据订单索引将K个相关输出存储在缓冲器中; 以及（c）基于所述K个相关输出来估计参数，所述参数指示所述频率校正突发的检测。 估计参数包括频率误差和频率校正突发的结束时间。 还计算与每个频率误差相关联的质量度量。

公开(公告)号：US20210168710A1

公开(公告)日：2021-06-03

申请号：US17132088

申请日：2020-12-23

申请人： Prasanna Desai ,  David Birnbaum ,  Arnaud Pierres ,  Atsuo Kuwahara ,  Noam Ginsburg ,  Jacques Behar ,  Michael Shusterman ,  Yashodhara Devadiga ,  Izoslav Tchigevsky ,  Avihay Cohen ,  Guy Halperin

发明人： Prasanna Desai ,  David Birnbaum ,  Arnaud Pierres ,  Atsuo Kuwahara ,  Noam Ginsburg ,  Jacques Behar ,  Michael Shusterman ,  Yashodhara Devadiga ,  Izoslav Tchigevsky ,  Avihay Cohen ,  Guy Halperin

IPC分类号： H04W52/02 ,  H04W4/80 ,  H04W72/04

摘要： For example, a Bluetooth (BT) device may include a BT controller configured to receive a power state indication from a host processor of the BT device, the power state indication to indicate a power state corresponding to a power source being utilized by the BT device; and to control one or more BT activities of the BT device according to a BT communication scheme, the BT controller to configure the BT communication scheme based on the power state indication.

公开(公告)号：US08874034B2

公开(公告)日：2014-10-28

申请号：US12267951

申请日：2008-11-10

申请人： John S. Walley ,  Brima Babatunde Ibrahim ,  Steven Hall ,  Prasanna Desai ,  Yuan Zhuang

发明人： John S. Walley ,  Brima Babatunde Ibrahim ,  Steven Hall ,  Prasanna Desai ,  Yuan Zhuang

IPC分类号： H04B7/00 ,  H04W16/14

CPC分类号： H04W16/14

摘要： Aspects of the invention may comprise managing operations of BLE interfaces and/or other radio interfaces in a wireless device to mitigate interference to communication via the BLE interfaces by the other radio interfaces. Operating parameters may be communicated between the BLE interfaces and the other radio interfaces to enable mitigating the interference to the BLE interfaces, and at least some of the BLE interfaces and/or the other radio interfaces may be configured based on the communicated operating parameters. The operating parameters may comprise adaptive frequency hopping (AFH) maps that may be adjusted to prevent use of common and/or used channels. The communication device may detect energy associated with BLE communication via scan of all or some of channels used for BLE communication. BLE communication may be predicted based on monitoring of frequency bands used during BLE communication, and/or monitoring of events that may trigger and/or occur during BLE communication.

摘要翻译： 本发明的方面可以包括管理无线设备中的BLE接口和/或其他无线电接口的操作，以减轻其他无线电接口经由BLE接口的通信的干扰。 可以在BLE接口和其他无线电接口之间传送操作参数，以便减轻对BLE接口的干扰，并且可以基于传送的操作参数来配置至少一些BLE接口和/或其他无线接口。 操作参数可以包括可以被调整以防止使用公共和/或使用的信道的自适应跳频（AFH）映射。 通信设备可以通过扫描用于BLE通信的全部或一些信道来检测与BLE通信相关联的能量。 可以基于在BLE通信期间使用的频带的监视和/或监视在BLE通信期间可能触发和/或发生的事件的BLE通信。

公开(公告)号：US08744351B2

公开(公告)日：2014-06-03

申请号：US12546638

申请日：2009-08-24

申请人： Ash Kapur ,  Prasanna Desai

发明人： Ash Kapur ,  Prasanna Desai

IPC分类号： H04B7/00

CPC分类号： H04W12/02 ,  H04L63/0464 ,  H04W84/12 ,  H04W84/18 ,  H04W88/04 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/26

摘要： A relay host wireless device is paired with a target host wireless device over a secure link. The relay host wireless device is operable to acquire link security information, which is associated with a link between the target host wireless device and a wireless end-point device, from the target host wireless device. The relay host wireless device is enabled to establish a link with the target host wireless device by faking its identity as an assumed identity of the target host wireless device. The acquired link security information is applied to the established link. The relay host wireless device is enabled to relay content between the target host wireless device and the wireless end-point device via the established fake link using said assumed identity of the target host wireless device and the secure link between the relay host wireless device and the target host wireless device, successively.

摘要翻译： 中继主机无线设备通过安全链路与目标主机无线设备配对。 中继主机无线设备可操作以从目标主机无线设备获取与目标主机无线设备和无线端点设备之间的链路相关联的链路安全信息。 允许中继主机无线设备通过将其身份伪造为目标主机无线设备的假定身份来建立与目标主机无线设备的链路。 获取的链路安全信息应用于已建立的链路。 中继主机无线设备能够使用目标主机无线设备的所述假定身份以及中继主机无线设备与所述主机无线设备之间的安全链路，经由建立的假链路在目标主机无线设备与无线终点设备之间中继内容 目标主机无线设备。

公开(公告)号：US08229041B2

公开(公告)日：2012-07-24

申请号：US12684765

申请日：2010-01-08

申请人： Prasanna Desai

发明人： Prasanna Desai

IPC分类号： H04L27/06

CPC分类号： H04B1/1027 ,  H04L5/0062

摘要： Direct detection of wireless interferers in a communication device for multiple modulation types. One or more radios implemented within a communication device is/are operative to receive and process wireless communications. A wireless communication signal is processed to extract symbols there from. Various symbols groups are processed in accordance with correlation processing to identify potential interferers (e.g., other communication devices using common portions of frequency spectra). Alternatively, matched filter processing (e.g., using a Barker matched filter in some embodiments) operates on the various symbol groups to identify some potential interferers. Various combinations of correlation processing and matched filter processing may be employed in other instances (e.g., using any of a desired means of comparison, combining, etc.) in considering interferers identified in accordance with each of these two means. Also, re-identification and re-characterization of possible interferers may be performed subsequently to remove or re-admit frequency spectra for use in communications.

公开(公告)号：US20100120362A1

公开(公告)日：2010-05-13

申请号：US12267951

申请日：2008-11-10

申请人： John S. Walley ,  Brima Babatunde Ibrahim ,  Steven Hall ,  Prasanna Desai ,  Yuan Zhuang

发明人： John S. Walley ,  Brima Babatunde Ibrahim ,  Steven Hall ,  Prasanna Desai ,  Yuan Zhuang

IPC分类号： H04B7/00

CPC分类号： H04W16/14

摘要： Aspects of the invention may comprise managing operations of BLE interfaces and/or other radio interfaces in a wireless device to mitigate interference to communication via the BLE interfaces by the other radio interfaces. Operating parameters may be communicated between the BLE interfaces and the other radio interfaces to enable mitigating the interference to the BLE interfaces, and at least some of the BLE interfaces and/or the other radio interfaces may be configured based on the communicated operating parameters. The operating parameters may comprise adaptive frequency hopping (AFH) maps that may be adjusted to prevent use of common and/or used channels. The communication device may detect energy associated with BLE communication via scan of all or some of channels used for BLE communication. BLE communication may be predicted based on monitoring of frequency bands used during BLE communication, and/or monitoring of events that may trigger and/or occur during BLE communication.

摘要翻译： 本发明的方面可以包括管理无线设备中的BLE接口和/或其他无线电接口的操作，以减轻其他无线电接口经由BLE接口的通信的干扰。 可以在BLE接口和其他无线电接口之间传送操作参数，以便减轻对BLE接口的干扰，并且可以基于传送的操作参数来配置至少一些BLE接口和/或其他无线接口。 操作参数可以包括可以被调整以防止使用公共和/或使用的信道的自适应跳频（AFH）映射。 通信设备可以通过扫描用于BLE通信的全部或一些信道来检测与BLE通信相关联的能量。 可以基于在BLE通信期间使用的频带的监视和/或监视在BLE通信期间可能触发和/或发生的事件的BLE通信。

公开(公告)号：US20090196210A1

公开(公告)日：2009-08-06

申请号：US12048444

申请日：2008-03-14

申请人： Prasanna Desai

发明人： Prasanna Desai

IPC分类号： G08C17/00

CPC分类号： H04W52/0229 ,  H04W16/14 ,  H04W52/0225 ,  H04W88/06 ,  Y02D70/1224 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/166

摘要： Collaborative coexistence of co-located mobile WiMAX, wireless LAN, and/or Bluetooth radios. Within a communication device that includes multi-protocol communication capability, the various radio modules included within such a communication device operate cooperatively such that collisions are avoided between those various radios. When a first of the radio modules operates as governed by a relatively rigid frame structure, a second of the radio modules capitalizes upon that predetermined nature (of the relatively rigid frame structure) to support communication during times in which that first radio module has a lower level of activity (e.g., turned off completely, within a power savings mode, in a sleep mode, etc.). The radio module operation is performed within a time-orthogonal manner, such that multiple radio modules are not attempting to transmit or receive simultaneously. Moreover, CTS2SELF operation can be employed alone or in conjunction with power savings operation of co-located radios within a communication device.

摘要翻译： 共同移动WiMAX，无线局域网和/或蓝牙无线电的协同共存。 在包括多协议通信能力的通信设备中，包括在这种通信设备内的各种无线电模块协作地进行操作，以避免这些各种无线电之间的冲突。 当无线电模块中的第一个由相对刚性的帧结构来操作时，第二个无线电模块利用该预定特性（相对刚性的帧结构）来支持在该第一无线电模块具有较低的 活动水平（例如，在省电模式下，睡眠模式下等）完全关闭。 以时间正交的方式执行无线电模块操作，使得多个无线电模块不尝试同时发送或接收。 此外，CTS2SELF操作可以单独使用或与通信设备内的同位置无线电的功率节省操作结合使用。

公开(公告)号：US20080259846A1

公开(公告)日：2008-10-23

申请号：US11801644

申请日：2007-05-10

申请人： Mark Gonikberg ,  Prasanna Desai

发明人： Mark Gonikberg ,  Prasanna Desai

IPC分类号： H04Q7/00

CPC分类号： H04W28/10 ,  H04W72/1215 ,  H04W88/06

摘要： A circuit includes a first wireless interface circuit that transceives packetized data with a first external device in accordance with a first wireless communication protocol. A second wireless interface circuit transceives packetized data with a second external device in accordance with a second wireless communication protocol and wherein the operation of the second wireless interface circuit interferes with the operation of the first wireless interface circuit. A processing module selectively preempts use of the second frequency spectrum by the second external device using a plurality of preemption modes including a first preemption mode and a second preemption mode.

摘要翻译： 电路包括根据第一无线通信协议与第一外部设备收发分组数据的第一无线接口电路。 第二无线接口电路根据第二无线通信协议与第二外部设备收发分组化数据，并且其中第二无线接口电路的操作干扰第一无线接口电路的操作。 处理模块使用包括第一抢占模式和第二抢占模式的多个抢占模式来选择性地抢占第二外部设备使用第二频谱。

公开(公告)号：US20070224936A1

公开(公告)日：2007-09-27

申请号：US11387541

申请日：2006-03-23

申请人： Prasanna Desai

发明人： Prasanna Desai

IPC分类号： H04B7/00

CPC分类号： H04W52/243 ,  H04W52/242 ,  H04W72/1215 ,  H04W88/06

摘要： Aspects of a method and system for transmit power control techniques to reduce mutual interference between coexistent wireless networks are provided. A coexistence terminal comprising a WLAN radio and a Bluetooth radio operating as a master device may transmit signals to one or more remote controllers comprising a slave Bluetooth radio to increase transmission power when the isolation between the coexistence terminal's WLAN and Bluetooth radios is below a threshold. Link manager protocol (LMP) signals may be utilized for changing the transmission power. When the isolation increases above the threshold, signals may be generated to reduce the remote controllers' transmission power. In some instances, in addition to increasing the transmission power of remote controllers, the transmission power of the Bluetooth radio or the WLAN radio may be reduced. The reduced Bluetooth or WLAN radio transmission power may be increased when the radio isolation in the coexistence terminal increases.

摘要翻译： 提供了用于发送功率控制技术的方法和系统的方面，以减少共存无线网络之间的相互干扰。 包括WLAN无线电和作为主设备的蓝牙无线电的共存终端可以在包括从属蓝牙无线电的一个或多个远程控制器中发送信号，以在共存终端的WLAN和蓝牙无线电之间的隔离低于阈值时增加发射功率。 链路管理协议（LMP）信号可用于改变传输功率。 当隔离度增加到阈值以上时，可能产生信号以减少遥控器的传输功率。 在一些情况下，除了增加遥控器的发射功率之外，可以减少蓝牙无线电或WLAN无线电的发射功率。 当共存终端中的无线电隔离增加时，可以增加减少的蓝牙或WLAN无线电传输功率。