公开(公告)号：US20130120665A1

公开(公告)日：2013-05-16

申请号：US13674008

申请日：2012-11-10

Applicant: Anand Anandakumar ,  Sheng Ye ,  Curtis Ling

Inventor： Anand Anandakumar ,  Sheng Ye ,  Curtis Ling

IPC: H04N5/44 ,  H04N5/50

CPC classification number: H04N21/4263 ,  H04N5/44 ,  H04N5/50 ,  H04N21/4383 ,  H04N21/4436 ,  H04N21/4622 ,  H04N21/6143

Abstract: Methods and systems for multi-path video and network channels may comprise a communication device comprising a wideband path (WB) and a narrowband path (NB), wherein the WB may be operable to receive a plurality of channels and the NB may be operable to receive a single channel. Video channels and a network channel may be received in the WB when the device is operating in a first stage. Video channels and a network channel may be received in the WB and the network channel may also be received in the NB when the device is operating in a second stage. The network channel may be received in the NB when the device is operating in a third stage. The reception of the network channel from both the WB and the NB may enable a continuous reception of the network channel in a transition between the first and third stages.

Abstract translation: 用于多路径视频和网络信道的方法和系统可以包括包括宽带路径（WB）和窄带路径（NB）的通信设备，其中，所述WB可以可操作以接收多个信道，并且所述NB可操作为 接收单个频道。 当设备在第一阶段中操作时，可以在WB中接收视频通道和网络通道。 在WB中可以接收视频信道和网络信道，并且当设备在第二阶段中操作时，也可以在NB中接收网络信道。 当设备在第三阶段中操作时，可以在NB中接收网络信道。 来自WB和NB的网络信道的接收可以使得能够在第一和第三级之间的转换中连续接收网络信道。

公开(公告)号：US09739890B2

公开(公告)日：2017-08-22

申请号：US12939543

申请日：2010-11-04

Applicant: Ioannis Spyropoulos ,  Anand Anandakumar ,  Maxime Leclercq ,  Yves Rasse

Inventor： Ioannis Spyropoulos ,  Anand Anandakumar ,  Maxime Leclercq ,  Yves Rasse

IPC: G01S19/34

CPC classification number: G01S19/34

Abstract: A GPS receiver includes an RF front end for acquiring and tracking a satellite signal and a baseband processor configured to preserve power. The baseband processor includes a GPS engine configured to process the satellite signal and generate a PVT fix, a power supervisory module for receiving the PVT fix, and a user state module that determines an environmental state, wherein the power supervisory module may power down the GPS receiver for a period of time based on a result of the determined environment state. The baseband processor also includes a time-based management module that adjusts the TCXO in response to the determined environmental state. The GPS receiver includes a plurality of operation modes, each of which is associated with a plurality of tracking profiles.

公开(公告)号：US09008119B2

公开(公告)日：2015-04-14

申请号：US13646139

申请日：2012-10-05

Applicant: Anand Anandakumar ,  Serdar Yilmaz ,  Chi-Foun Kuen ,  Ravi Aripirala

Inventor： Anand Anandakumar ,  Serdar Yilmaz ,  Chi-Foun Kuen ,  Ravi Aripirala

IPC: H04J3/16 ,  H04N5/44 ,  H04N5/455 ,  H04L29/06

CPC classification number: H04L69/22 ,  H04J3/0658 ,  H04L12/4633 ,  H04L29/06176 ,  H04L49/101 ,  H04L65/607 ,  H04L69/28 ,  H04N5/44 ,  H04N5/455 ,  H04N21/4263 ,  H04N21/4343 ,  H04N21/4346 ,  H04N21/4382 ,  H04N21/4385

Abstract: An integrated circuit may comprise a tuner operable to digitize a band of frequencies comprising a plurality of television channels, a crossbar operable to select one or more of the plurality of television channels output by the tuner, a plurality of demodulators operable to receive the selected one or more television channels from the crossbar and demodulate the selected one or more television channels to recover a plurality of transport streams, a transport module operable to multiplex the plurality of transport streams into a single packet stream, and a framer operable to: encapsulate packets of the plurality of transport streams into transport stream frames of a serial datastream, and insert filler frames into the serial datastream after every Nth transport stream frame of the serial datastream, where N is an integer.

Abstract translation: 集成电路可以包括可操作以对包括多个电视频道的频带进行数字化的调谐器，可操作以选择由调谐器输出的多个电视频道中的一个或多个的交叉开关，多个解调器，其可操作以接收所选择的一个 或更多的电视频道，并且解调所选择的一个或多个电视频道以恢复多个传输流，传输模块，可操作以将多个传输流复用为单个分组流;以及成帧器，其可操作以：将包 多个传输流进入串行数据流的传输流帧，并且在串行数据流的每第N个传输流帧之后将填充帧插入到串行数据流中，其中N是整数。

公开(公告)号：US20130088646A1

公开(公告)日：2013-04-11

申请号：US13646139

申请日：2012-10-05

Applicant: Anand Anandakumar ,  Serdar Yilmaz ,  Chi-Foun Kuen ,  Ravi Aripirala

Inventor： Anand Anandakumar ,  Serdar Yilmaz ,  Chi-Foun Kuen ,  Ravi Aripirala

IPC: H04N5/455 ,  H04N5/44

CPC classification number: H04L69/22 ,  H04J3/0658 ,  H04L12/4633 ,  H04L29/06176 ,  H04L49/101 ,  H04L65/607 ,  H04L69/28 ,  H04N5/44 ,  H04N5/455 ,  H04N21/4263 ,  H04N21/4343 ,  H04N21/4346 ,  H04N21/4382 ,  H04N21/4385

Abstract: An integrated circuit may comprise a tuner operable to digitize a band of frequencies comprising a plurality of television channels, a crossbar operable to select one or more of the plurality of television channels output by the tuner, a plurality of demodulators operable to receive the selected one or more television channels from the crossbar and demodulate the selected one or more television channels to recover a plurality of transport streams, a transport module operable to multiplex the plurality of transport streams into a single packet stream, and a framer operable to: encapsulate packets of the plurality of transport streams into transport stream frames of a serial datastream, and insert filler frames into the serial datastream after every Nth transport stream frame of the serial datastream, where N is an integer.

公开(公告)号：US20120105277A1

公开(公告)日：2012-05-03

申请号：US13098314

申请日：2011-04-29

Applicant: Curtis Ling ,  Anand Anandakumar

Inventor： Curtis Ling ,  Anand Anandakumar

IPC: G01S19/00

CPC classification number: G01S19/05 ,  G01S19/256 ,  G01S19/31 ,  G01S19/34

Abstract: Systems and methods for extracting synchronization information from ambient signals, such as broadcast television signals, and using the synchronization information as a reference for correcting the local time base so that a GNSS positioning receiver system maintains relative time base accuracy with respect to a GNSS time.

Abstract translation: 从诸如广播电视信号的环境信号中提取同步信息的系统和方法，以及使用同步信息作为校正本地时基的参考，以使得GNSS定位接收机系统相对于GNSS时间维持相对的时基精度。

公开(公告)号：US20110280349A1

公开(公告)日：2011-11-17

申请号：US12947667

申请日：2010-11-16

Applicant: Seung-Chul Hong ,  Anand Anandakumar ,  Curtis Ling

Inventor： Seung-Chul Hong ,  Anand Anandakumar ,  Curtis Ling

IPC: H04L7/00 ,  H04L27/06

CPC classification number: H04L1/0023 ,  H04L5/0007 ,  H04L7/0016 ,  H04L25/0216 ,  H04L27/265 ,  H04L27/2665 ,  H04L27/2671 ,  H04L27/2695

Abstract: Systems and methods for adjusting timing in a communication system, such as an OFDM system are described. In one implementation an error signal is generated to adjust the timing of a variable rate interpolator so as to adjust FFT timing. The error signal may be based on detection of significant peaks in an estimate of the impulse response of the channel, with the peak locations being tracked over subsequent symbols and the system timing adjusted in response to changes in the peaks.

Abstract translation: 描述了用于调整诸如OFDM系统的通信系统中的定时的系统和方法。 在一个实现中，产生误差信号以调整可变速率内插器的定时，以便调整FFT定时。 误差信号可以基于在通道的脉冲响应的估计中检测到有效峰值，其中峰值位置在随后的符号上被跟踪，并且响应于峰值的变化来调整系统时序。

公开(公告)号：US20070279228A1

公开(公告)日：2007-12-06

申请号：US11809343

申请日：2007-05-31

Applicant: Martin Morris ,  Anand Anandakumar ,  Aliazam Abbasfar

Inventor： Martin Morris ,  Anand Anandakumar ,  Aliazam Abbasfar

IPC: G08B13/14 ,  G06F17/00 ,  G08B5/22

CPC classification number: G07G1/14 ,  G06Q10/087 ,  G06Q30/06

Abstract: An implementation of a signaling protocol for low power and large scale wireless networks provides a media access control (MAC) that produces a low rate two-way communication link between a commercial infrastructure and a very large number of small, low-cost devices known as electronic tags. The numerous tags attached to merchandise or shelves communicate with a number of access points (AP) distributed throughout a facility containing merchandise for sale or storage. A store controller maintains the pricing database for the point of sale (POS) registers of the facility. Price changes are transmitted in real time to the tag, thus updating the merchandise tags and the point of sales (POS) registers simultaneously. The tags contain a controller and a battery in which conservation of power is crucial to the life of the tags.

Abstract translation: 用于低功率和大规模无线网络的信令协议的实现提供了媒体接入控制（MAC），其在商业基础设施和大量小型，低成本的设备之间产生低速率双向通信链路，称为 电子标签。 连接到商品或货架上的许多标签与分发在包含销售或存储商品的设施的多个接入点（AP）通信。 商店控制器维护设施的销售点（POS）寄存器的定价数据库。 价格变化实时传输到标签，从而同时更新商品标签和销售点（POS）寄存器。 标签包含控制器和电池，其中电力守恒对于标签的寿命至关重要。

公开(公告)号：US20110102257A1

公开(公告)日：2011-05-05

申请号：US12939543

申请日：2010-11-04

Applicant: Ioannis Spyropoulos ,  Anand Anandakumar ,  Maxime Leclercq ,  Yves Rasse

Inventor： Ioannis Spyropoulos ,  Anand Anandakumar ,  Maxime Leclercq ,  Yves Rasse

IPC: G01S19/48 ,  G01S19/42 ,  G01S19/34

CPC classification number: G01S19/34

Abstract: A GPS receiver includes an RF front end for acquiring and tracking a satellite signal and a baseband processor configured to preserve power. The baseband processor includes a GPS engine configured to process the satellite signal and generate a PVT fix, a power supervisory module for receiving the PVT fix, and a user state module that determines an environmental state, wherein the power supervisory module may power down the GPS receiver for a period of time based on a result of the determined environment state. The baseband processor also includes a time-based management module that adjusts the TCXO in response to the determined environmental state. The GPS receiver includes a plurality of operation modes, each of which is associated with a plurality of tracking profiles.

Abstract translation: GPS接收机包括用于获取和跟踪卫星信号的RF前端和配置成保持功率的基带处理器。 基带处理器包括配置成处理卫星信号并产生PVT固定的GPS引擎，用于接收PVT定位的电力监控模块以及确定环境状态的用户状态模块，其中电力监控模块可以关闭GPS 接收器基于所确定的环境状态的结果一段时间。 基带处理器还包括一个基于时间的管理模块，可根据确定的环境状态调整TCXO。 GPS接收机包括多个操作模式，每个操作模式与多个跟踪简档相关联。

公开(公告)号：US20050102600A1

公开(公告)日：2005-05-12

申请号：US10705597

申请日：2003-11-10

Applicant: Anand Anandakumar

Inventor： Anand Anandakumar

IPC: H03M13/00 ,  H03M13/03 ,  H03M13/29 ,  H03M13/45 ,  H04L20060101

CPC classification number: H03M13/3905 ,  H03M13/2957 ,  H03M13/3922 ,  H03M13/3972 ,  H03M13/6586 ,  H04L1/005

Abstract: A decoder for a communication system includes an iterative decoding module configured to receive soft-input information bits. The iterative decoding module iterates on probability estimates of the soft-input information bits to generate hard-decision output information. The iterative decoding module includes a plurality of arithmetic modules operating to generate and process both backward and forward metrics substantially simultaneously using modulo arithmetic operations.

Abstract translation: 用于通信系统的解码器包括被配置为接收软输入信息比特的迭代解码模块。 迭代解码模块迭代软输入信息比特的概率估计，以产生硬决策输出信息。 迭代解码模块包括多个运算模块，用于基本上同时使用模运算来产生和处理后向和后向测量。

公开(公告)号：US09077429B2

公开(公告)日：2015-07-07

申请号：US13413916

申请日：2012-03-07

Applicant: Maxime Leclercq ,  Ioannis Spyropoulos ,  Nishant Kumar ,  Anand Anandakumar

Inventor： Maxime Leclercq ,  Ioannis Spyropoulos ,  Nishant Kumar ,  Anand Anandakumar

IPC: H04B7/185

CPC classification number: G01S19/46 ,  H04B7/1853 ,  H04B7/18547 ,  H04W64/006

Abstract: Methods and systems for repurposing of a global navigation satellite system receiver for receiving low-earth orbit (LEO) communication satellite timing signals may comprise receiving medium Earth orbit (MEO) satellite signals and/or LEO signals in a receiver of the communication device. A radio frequency (RF) path may be configured to down-convert either of the signals, and a position of the communication device may be calculated utilizing the down-converted signals. The signals may be down-converted utilizing a local oscillator signal generated by a phase locked loop (PLL), which may be delta-sigma modulated via a fractional-N divider. A clock signal may be communicated to the PLL utilizing a temperature-compensated crystal oscillator. The signals may be down-converted to an intermediate frequency or down-converted directly to baseband frequencies. The signals may be processed utilizing surface acoustic wave (SAW) filters. In-phase and quadrature signals may be processed in the RF path utilizing a two-stage polyphase filter.

Abstract translation: 用于重新利用用于接收低地球轨道（LEO）通信卫星定时信号的全球导航卫星系统接收机的方法和系统可以包括在通信设备的接收机中接收介质地球轨道（MEO）卫星信号和/或LEO信号。 射频（RF）路径可以被配置为下变频信号中的任一个，并且可以利用下变频信号来计算通信设备的位置。 信号可以利用由锁相环（PLL）产生的本地振荡器信号进行下变频，锁相环（PLL）可经由分数N分频器进行Δ-Σ调制。 可以使用温度补偿晶体振荡器将时钟信号传送到PLL。 信号可以被下变频到中频或者直接下变频到基带频率。 可以使用表面声波（SAW）滤波器来处理信号。 可以使用两级多相滤波器在RF路径中处理同相和正交信号。