公开(公告)号：US07073116B1

公开(公告)日：2006-07-04

申请号：US10148155

申请日：2000-11-22

申请人： Timothy Forrest Settle ,  Thomas Peter Krauss ,  Kumar Ramaswamy

发明人： Timothy Forrest Settle ,  Thomas Peter Krauss ,  Kumar Ramaswamy

IPC分类号： H03M13/03

CPC分类号： H03M13/25 ,  H04L27/3488

摘要： The power of the respective codes used by the first and second error detection/correction circuitry are such that the coded bit error rate of the first data stream is more closely matched to the coded bit error rate of the second data stream. A hierarchical QAM system allows the transmission of different sources by embedding the relative constellation points. The hierarchical QAM transmitter encodes the first data stream using a code having a first detection/correction power and encodes the second data stream using a code having a second detection/correction power.

摘要翻译： 由第一和第二错误检测/校正电路使用的各个代码的功率使得第一数据流的编码误码率与第二数据流的编码误码率更紧密地匹配。 分层QAM系统允许通过嵌入相对星座点来传输不同的源。 分层QAM发射机使用具有第一检测/校正功率的码对第一数据流进行编码，并且使用具有第二检测/校正功率的码对第二数据流进行编码。

公开(公告)号：US20060117360A1

公开(公告)日：2006-06-01

申请号：US10543481

申请日：2004-01-23

申请人： Jeffrey Cooper ,  Jill Boyce ,  Kumar Ramaswamy

发明人： Jeffrey Cooper ,  Jill Boyce ,  Kumar Ramaswamy

IPC分类号： H04N7/173 ,  H04N7/16

CPC分类号： H04N21/4349 ,  H04N7/17318 ,  H04N21/26275 ,  H04N21/4384 ,  H04N21/44209

摘要： A method and apparatus for staggercasting a plurality of content representative signals includes encoding a first and a corresponding second signal representing each of the plurality of content representative signals. A composite signal is generated comprising the plurality of first and second encoded signals. In the composite signal, each respective second encoded signal is delayed with respect to the corresponding first encoded signal. The first and second encoded signal representing a selected one of the content representative signals is extracted to reproduce the selected content representative signal. The extracted first encoded signal is decoded if an error is detected in the extracted second encoded signal, otherwise the extracted second encoded signal is decoded. When a different content representative signal is newly selected, the first extracted encoded signal is decoded until the delayed second extracted encoded signal is available.

摘要翻译： 用于交错多个内容代表信号的方法和装置包括编码表示多个内容代表信号中的每一个的第一和相应的第二信号。 产生包括多个第一和第二编码信号的复合信号。 在复合信号中，每个相应的第二编码信号相对于对应的第一编码信号被延迟。 提取表示选择的一个内容代表信号的第一和第二编码信号，以再现所选择的内容代表信号。 如果在提取的第二编码信号中检测到错误，则提取的第一编码信号被解码，否则提取的第二编码信号被解码。 当新选择不同的内容代表信号时，第一提取的编码信号被解码，直到延迟的第二提取的编码信号可用。

公开(公告)号：US20060056505A1

公开(公告)日：2006-03-16

申请号：US10543044

申请日：2004-01-20

申请人： Kumar Ramaswamy ,  Jeffrey Cooper ,  Jill Boyce

发明人： Kumar Ramaswamy ,  Jeffrey Cooper ,  Jill Boyce

IPC分类号： H04N11/04 ,  H04N11/02 ,  H04N7/12 ,  H04B1/66

CPC分类号： H04N9/8042 ,  H04L1/02 ,  H04L1/08 ,  H04L27/02 ,  H04L2001/0098 ,  H04N5/85 ,  H04N19/00 ,  H04N19/107 ,  H04N19/12 ,  H04N19/142 ,  H04N19/164 ,  H04N19/169 ,  H04N19/172 ,  H04N19/176 ,  H04N19/188 ,  H04N19/20 ,  H04N19/36 ,  H04N19/37 ,  H04N19/39 ,  H04N19/61 ,  H04N19/63 ,  H04N19/89 ,  H04N19/895 ,  H04N21/234327 ,  H04N21/234363 ,  H04N21/234381 ,  H04N21/2362 ,  H04N21/2365 ,  H04N21/2383 ,  H04N21/2662 ,  H04N21/4347 ,  H04N21/4382 ,  H04N21/4383 ,  H04N21/631

摘要： A method and apparatus for staggercasting, encodes a first signal representing content and encodes a second signal representing the content using encoding relatively more robust than the encoding of the first encoded content representative signal. A composite signal including at least the first and second encoded signals is generated, in which one of the first and second encoded signals is delayed with respect to the other encoded signal. If an error is detected in the composite signal, then the undelayed encoded signal is decoded to reproduce the content. Otherwise, the delayed encoded signal is decoded to reproduce the content.

摘要翻译： 一种用于交错广播的方法和装置，对表示内容的第一信号进行编码，并使用比第一编码内容代表信号的编码更加鲁棒的编码对使用表示内容的第二信号进行编码。 生成包括至少第一和第二编码信号的复合信号，其中第一和第二编码信号中的一个相对于另一编码信号被延迟。 如果在复合信号中检测到错误，则对未延迟的编码信号进行解码以再现内容。 否则，对延迟编码的信号进行解码以再现内容。

公开(公告)号：US06980651B2

公开(公告)日：2005-12-27

申请号：US09884722

申请日：2001-06-19

申请人： Louis Robert Litwin, Jr. ,  Kumar Ramaswamy ,  Michael Arthur Derrenberger

发明人： Louis Robert Litwin, Jr. ,  Kumar Ramaswamy ,  Michael Arthur Derrenberger

IPC分类号： H04L29/06 ,  H04L9/00 ,  H04K1/00

CPC分类号： H04L63/0442 ,  H04L63/062 ,  H04L63/0876

摘要： A method for creating a secure sub-network on a public network that includes a set of devices. The secure sub-network is to include a subset of devices from among the set of devices. An access card is provided having a first private key comprised thereon. The access card is scanned to determine the first private key, by the subset of devices. A master device is determined from among the subset of devices. A second private key is selected and a public key is computed based on the second private key, by the master device. The second private key is only known to the master device. The public key is sent to the set of devices, by the master device. A shared encryption key is computed, and an encryption is requested of any subsequent messages between any of the devices comprising the subset of devices using the shared encryption key.

摘要翻译： 一种用于在包括一组设备的公共网络上创建安全子网的方法。 该安全子网络将包括一组设备中的设备子集。 提供具有包括在其上的第一私钥的访问卡。 通过设备的子集来扫描访问卡以确定第一私钥。 从设备的子集中确定主设备。 主设备选择第二私钥并基于第二私钥计算公钥。 第二个私钥只有主设备才知道。 公钥由主设备发送到设备集。 计算共享加密密钥，并且对包括使用共享加密密钥的设备子集的任何设备之间的任何后续消息请求加密。

公开(公告)号：US20050246751A1

公开(公告)日：2005-11-03

申请号：US10527125

申请日：2003-09-10

申请人： Jill Boyce ,  Kumar Ramaswamy

发明人： Jill Boyce ,  Kumar Ramaswamy

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04N5/00 ,  H04N7/173 ,  H04N7/24 ,  H04N7/58

CPC分类号： H04N21/23655 ,  H04N21/23439 ,  H04N21/2365 ,  H04N21/2662 ,  H04N21/4347

摘要： A Video-on-Demand Server architecture transmits a plurality of pre-coded programs having different bit rates across a fixed bandwidth channel. For each program, a generator generates a plurality of different bit rate representations for each program. Each generator also provides control information at each of a plurality of successive time windows T for each bit rate representation. The control information provides a bit rate and a quality measure during each time window T. The control information enables a statistical multiplexer to select a bit rate representation for each program during each time window T to maximize the quality of the selected representations while not exceeding the total available channel capacity.

摘要翻译： 视频点播服务器架构在固定带宽信道上发送具有不同比特率的多个预编码节目。 对于每个程序，发生器为每个程序生成多个不同的比特率表示。 每个发生器还在每个比特率表示的多个连续时间窗口T的每一个处提供控制信息。 控制信息在每个时间窗口T期间提供比特率和质量测量。控制信息使得统计多路复用器能够在每个时间窗口T期间为每个节目选择比特率表示，以使所选表示的质量最大化，而不超过 总可用频道容量。

公开(公告)号：US20050237389A1

公开(公告)日：2005-10-27

申请号：US10512525

申请日：2003-04-25

申请人： Michael Pugel ,  Kumar Ramaswamy

发明人： Michael Pugel ,  Kumar Ramaswamy

IPC分类号： H03J3/22 ,  H03J1/00 ,  H03J3/18 ,  H03J3/20 ,  H04B1/18 ,  H04N5/33 ,  H04N5/50 ,  H04N5/52

CPC分类号： H04N5/50 ,  H03J1/0066 ,  H03J3/185 ,  H03J3/20 ,  H03J2200/28 ,  H04N5/52 ,  H04N21/4383 ,  H04N21/44209

摘要： A system, apparatus and/or method provides frequency response adjustment of an RF input filter of an RF tuner based on impedance of an antenna system that is providing reception of RF signals to the RF tuner. The frequency response adjustment is preferably accomplished dynamically and/or with respect to each frequency tuned. Particularly, the system, method and/or apparatus provides compensation at the RF tuner level for mistuning effects produced on the RF tuner by antenna system impedance presented at the antenna input that is other than a designed for impedance. Frequency response of an RF input filter for the RF tuner is electronically adjustable with an independent or semi-independent control voltage signal based on one or more measured parameters of a tuning frequency. Frequency response adjustment may include adjustment of a center frequency of the RF input filter bandpass frequency range and/or altering the bandpass frequency range of the RF input filter. The subject invention expands the capability of an RF signal receiver, particularly one using at least one electronically adjustable RF filter at the input of an electronic alignment type tuner.

摘要翻译： 系统，装置和/或方法基于向RF调谐器提供RF信号的接收的天线系统的阻抗来提供RF调谐器的RF输入滤波器的频率响应调整。 频率响应调整优选地动态地和/或关于调谐的每个频率实现。 特别地，系统，方法和/或设备在RF调谐器级别提供对在RF调谐器上产生的失谐效应的补偿，该天线系统阻抗呈现在除了被设计为阻抗之外的天线输入处。 用于RF调谐器的RF输入滤波器的频率响应可以使用基于调谐频率的一个或多个测量参数的独立或半独立控制电压信号进行电子调节。 频率响应调整可以包括调整RF输入滤波器带通频率范围的中心频率和/或改变RF输入滤波器的带通频率范围。 本发明扩展了RF信号接收机的能力，特别是在电子对准型调谐器的输入处使用至少一个电子可调节RF滤波器的能力。

公开(公告)号：US06954793B2

公开(公告)日：2005-10-11

申请号：US10183081

申请日：2002-06-27

申请人： Kumar Ramaswamy ,  Charles Chuanming Wang ,  Junbaio Zhang ,  Sachin Satish Mody

发明人： Kumar Ramaswamy ,  Charles Chuanming Wang ,  Junbaio Zhang ,  Sachin Satish Mody

IPC分类号： H04L12/14 ,  G06Q20/02 ,  G06Q20/08 ,  G06Q20/38 ,  G06Q20/40 ,  G06Q30/04 ,  H04L9/32 ,  H04L12/28 ,  H04L29/06 ,  H04M17/00 ,  H04W12/06 ,  G06F15/173

CPC分类号： H04L63/0428 ,  G06Q20/027 ,  G06Q20/085 ,  G06Q20/0855 ,  G06Q20/382 ,  G06Q20/4012 ,  G06Q30/04 ,  H04L12/14 ,  H04L12/1403 ,  H04L12/1457 ,  H04L12/1467 ,  H04L12/2856 ,  H04L63/0823 ,  H04L63/083 ,  H04M17/00 ,  H04M17/10 ,  H04M2215/2033 ,  H04M2215/22 ,  H04M2215/32 ,  H04W4/24 ,  H04W12/06 ,  H04W74/00 ,  H04W84/12

摘要： A user (121, 122) can gain access to a Local Area Network (LAN) (20) on a fee basis without the risk of having to transmit an un-encrypted PIN at upon initial access. The user initially sends a request to the LAN identifying a Billing Agent (26) that maintains an account associated with the user for payment of LAN access charges. In practice, the account can take the form of a pre-paid account identified only by a PIN known to the user. After the user has identified the Billing Agent, the LAN queries the Billing Agent for its digital certificate, which the LAN forwards to the user. The user utilizes the certificate to encrypt a PIN for transmission via the LAN to the Billing Agent for authentication. Upon successful authentication, the Billing Agent authorizes the LAN to grant access to the user, thus allowing the user to obtain a connection via the LAN to a private network (14) or a public network (16).

摘要翻译： 用户（12 1，12 2）可以以费用方式获得对局域网（LAN）（20）的访问，而不必发送un 加密PIN在初次访问时。 用户最初向LAN识别出一个账单代理（26）的请求，该计费代理（26）维护与该用户相关联的帐户以支付LAN访问费用。 实际上，该帐户可以采用仅由用户熟知的PIN识别的预付费帐户的形式。 在用户识别出计费代理之后，LAN会向计费代理查询其数字证书，LAN将转发给用户。 用户利用证书加密PIN，以便经由LAN传送到计费代理进行认证。 在成功认证后，计费代理授权LAN授予对用户的访问，从而允许用户通过LAN获得到专用网络（14）或公共网络（16）的连接。

公开(公告)号：US06900828B2

公开(公告)日：2005-05-31

申请号：US10484066

申请日：2002-07-19

申请人： Kumar Ramaswamy ,  Paul Gothard Knutson ,  Jeffrey Allen Cooper

发明人： Kumar Ramaswamy ,  Paul Gothard Knutson ,  Jeffrey Allen Cooper

IPC分类号： H04B1/16 ,  H04L1/00 ,  H04L12/56 ,  H04N5/21 ,  H04N5/44 ,  H04N7/24 ,  H04N7/26 ,  H04N19/89 ,  H04W24/00 ,  H04W28/14 ,  H04W72/12 ,  H04N7/06

CPC分类号： H04L1/08 ,  H04H20/30 ,  H04H20/42 ,  H04H20/72 ,  H04L1/007 ,  H04L1/0086 ,  H04L2001/0093 ,  H04N5/211 ,  H04N5/4401 ,  H04N19/37 ,  H04N19/39 ,  H04N19/67 ,  H04N19/89 ,  H04N21/234327 ,  H04N21/2365 ,  H04N21/2383 ,  H04N21/4347 ,  H04N21/4382 ,  H04N21/4392 ,  H04N21/44004 ,  H04N21/44209

摘要： In a digital broadcast communications system, a higher priority component and a lower priority component are broadcast from a transmitter to a receiver. Each of these components generates a main and a supplemental signal, and each supplemental signal is advanced in time with respect to the corresponding main signal. The main and supplemental signals for both the higher and lower priority components are combined into a single signal, which is broadcast to a receiver. In the receiver, the time advanced supplemental signals are stored in a buffer to time align them with their corresponding main signals. Both main signals are processed in the normal manner in the receiver, and are also monitored to detect a fading event. When a fading event is detected, the corresponding buffered supplemental signals are substituted for the faded main signals and normal processing continues.

摘要翻译： 在数字广播通信系统中，从发射机到接收机广播较高优先权分量和较低优先权分量。 这些部件中的每一个产生主要信号和补充信号，并且每个补充信号相对于相应的主信号在时间上提前。 用于较高和较低优先级组件的主要和补充信号被组合成单个信号，其被广播到接收机。 在接收机中，时间先进的补充信号被存储在缓冲器中以使它们与其相应的主信号对准。 两个主信号在接收机中以正常方式进行处理，并被监控以检测衰落事件。 当检测到衰落事件时，相应的缓冲补充信号代替衰落的主信号，并继续正常处理。

公开(公告)号：US06834091B2

公开(公告)日：2004-12-21

申请号：US09825232

申请日：2001-04-03

申请人： Louis Robert Litwin, Jr. ,  Kumar Ramaswamy

发明人： Louis Robert Litwin, Jr. ,  Kumar Ramaswamy

IPC分类号： H04L700

CPC分类号： H04B3/542 ,  H04B2203/545 ,  H04B2203/5495 ,  H04J3/0638 ,  H04L7/0008

摘要： Synchronization of a powerline modem network (10) with a plurality of devices is provided. A plurality of devices (16 and 18) each include a powerline modem (20) and a clock circuit (22) for synchronizing a data rate. The powerline modem permits data transmission between the plurality of devices over a powerline network on data carriers (28). A synchronization signal is transmitted over the powerline network. The synchronization signal includes a carrier (30) operating at a frequency different from the data carriers. The synchronization signal provides each of the plurality of devices a time reference to synchronize the data rate.

摘要翻译： 提供电力线调制解调器网络（10）与多个设备的同步。 多个设备（16和18）各自包括用于同步数据速率的电力线调制解调器（20）和时钟电路（22）。 电力线调制解调器允许数据载体（28）上的电力线网络上的多个设备之间的数据传输。 通过电力线网络传输同步信号。 同步信号包括以与数据载体不同的频率工作的载波（30）。 同步信号为多个设备中的每一个提供时间参考以同步数据速率。

公开(公告)号：US06832082B1

公开(公告)日：2004-12-14

申请号：US09581268

申请日：2000-11-10

申请人： Kumar Ramaswamy ,  Paul Gothard Knutson ,  Maneck Behram Kapadia

发明人： Kumar Ramaswamy ,  Paul Gothard Knutson ,  Maneck Behram Kapadia

IPC分类号： H04M166

CPC分类号： H04M1/66 ,  H04M1/68 ,  H04M1/727

摘要： A wireless telephone system, having one or more wireless handsets and a base unit. Each handset has a handset transceiver, and the base unit has a base transceiver and a handset docking station, which has a wired interface. The base unit digitally communicates over an RF channel with a handset via its handset transceiver only if the handset has previously been initialized by the base unit. The handset is initialized via the wired interface when it is physically docked in the docking station.

摘要翻译： 一种具有一个或多个无线手机和基本单元的无线电话系统。 每个手机具有手持机收发器，并且基座单元具有基地收发器和具有有线接口的手机对接站。 只有手机以前已经由基本单元初始化，基本单元才能通过手机收发器通过RF信道与手机通信。 当手机物理对接在对接站时，手机将通过有线接口进行初始化。