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    Method and apparatus for regenerative based interference cancellation within a communication system
    1.
    发明授权
    Method and apparatus for regenerative based interference cancellation within a communication system 有权
    通信系统内基于再生干扰消除的方法和装置

    公开(公告)号：US07697594B2

    公开(公告)日：2010-04-13

    申请号：US09820963

    申请日：2001-03-30

    申请人： Alexander Flaig ,  Samuel MacMullan ,  Harold V Poor ,  Tandhoni S Rao ,  Stuart Schwartz ,  Triveni N Upadhyay

    发明人： Alexander Flaig ,  Samuel MacMullan ,  Harold V Poor ,  Tandhoni S Rao ,  Stuart Schwartz ,  Triveni N Upadhyay

    IPC分类号： H04K1/00

    CPC分类号： H04B1/7107 ,  H04B1/712

    摘要： Interference cancellation is performed in a communication system. A signal associated with the users is received to produce a received signal. A set of regeneration factors associated with the users is determined based on the received signal. A frequency range associated with a first user from the users has at least a portion overlapping with at least a portion of a frequency range associated with a second user from the users. A time range associated with the first user from the users has at least a portion overlapping with at least a portion of a time range associated with the second user from the users. A regenerated signal associated with each user from the users is modified based on the determined regenerated factor associated with that user to produce a modified regenerated signal for each user.

    摘要翻译： 在通信系统中执行干扰消除。 接收与用户相关联的信号以产生接收的信号。 基于接收到的信号确定与用户相关联的一组再生因子。 与来自用户的第一用户相关联的频率范围具有至少一部分与来自用户的与第二用户相关联的频率范围的至少一部分重叠。 与来自用户的第一用户相关联的时间范围具有至少一部分与来自用户的与第二用户相关联的时间范围的至少一部分重叠。 基于与该用户相关联的所确定的再生因子来修改与来自用户的每个用户相关联的再生信号，以为每个用户产生修改的再生信号。

    Method and apparatus for detecting speech at a near-end of a communications system, a speaker-phone system, or the like
    2.
    发明授权
    Method and apparatus for detecting speech at a near-end of a communications system, a speaker-phone system, or the like 失效
    用于在通信系统的近端检测语音的方法和装置，扬声器电话系统等

    公开(公告)号：US6141415A

    公开(公告)日：2000-10-31

    申请号：US729468

    申请日：1996-10-11

    申请人： Tandhoni S. Rao

    发明人： Tandhoni S. Rao

    IPC分类号： H04M9/08 ,  H04R3/00

    CPC分类号： H04R3/002 ,  H04M9/082

    摘要： A method and communication system (10), which can be used in a full, pseudo full, or half duplex speaker-phone system, includes a circuit (14) to remove a frequency component from a received signal to output a modified received signal, and a speaker (18) to convert the modified received signal to an acoustic signal (20). The circuit (14) may be, for example, a notch filter, which may remove a sharp frequency range between about 1250 Hz and 1550 Hz. A microphone (26) converts a second acoustic signal (24) to an electrical signal for transmitting, and a detector (30) produces a detector output if the removed frequency is present in the acoustic signal (24). A circuit (34) is also provided to modify a circuit parameter applied to the received signal when the detector (30) produces a detector output. The parameter may be, for instance an attenuation applied to the received signal.

    摘要翻译： 一种可用于完整的伪全双工扬声器电话系统的方法和通信系统（10）包括从接收信号中去除频率分量以输出修改的接收信号的电路（14） 和扬声器（18），用于将经修改的接收信号转换成声信号（20）。 电路（14）可以是例如陷波滤波器，其可以去除约1250Hz和1550Hz之间的尖锐频率范围。 麦克风（26）将第二声信号（24）转换成用于传输的电信号，并且如果去除的频率存在于声信号（24）中，则检测器（30）产生检测器输出。 当检测器（30）产生检测器输出时，还提供电路（34）以修改施加到接收信号的电路参数。 该参数可以是例如施加到接收信号的衰减。

    System, method and apparatus for transmitting and receiving a transition minimized differential signal
    3.
    发明申请
    System, method and apparatus for transmitting and receiving a transition minimized differential signal 审中-公开
    用于发送和接收转换最小化差分信号的系统，方法和装置

    公开(公告)号：US20070296461A1

    公开(公告)日：2007-12-27

    申请号：US11600169

    申请日：2006-11-16

    申请人： Wayne Wong ,  Mark Sankey ,  Samuel J. MacMullan ,  Steven S. Fastert ,  Jeff Winston ,  Tandhoni S. Rao

    发明人： Wayne Wong ,  Mark Sankey ,  Samuel J. MacMullan ,  Steven S. Fastert ,  Jeff Winston ,  Tandhoni S. Rao

    IPC分类号： H03K19/0175

    CPC分类号： H04L25/0272

    摘要： The present invention is directed to a system, method, and apparatus to transmit/receive TMDS signals using general purpose differential transmitter and receivers. In an embodiment, the general purpose differential transmitter and receivers are designed to operate with differential signaling schemes such as LVDS and LVPECL. In one aspect, embodiments according to the present invention enable the re-configuration of existing and fully-characterized LVDS/LVPECL transmitter/receiver cells to support TMDS (using minimal sets of external components). This provides considerable cost and development time savings, thereby allowing the development of products much more expediently. In another aspect, embodiments according to the present invention provide interfacing methods and systems between differential signaling schemes such as LVDS/LVPECL and TMDS.

    摘要翻译： 本发明涉及使用通用差分发射机和接收机发送/接收TMDS信号的系统，方法和装置。 在一个实施例中，通用差分发射机和接收机被设计为使用诸如LVDS和LVPECL的差分信令方案来操作。 在一个方面，根据本发明的实施例使得能够重新配置现有的和完全特征化的LVDS / LVPECL发射器/接收器单元以支持TMDS（使用最小的外部部件组）。 这样可大大节省成本和开发时间，从而更方便地开发产品。 在另一方面，根据本发明的实施例提供诸如LVDS / LVPECL和TMDS的差分信令方案之间的接口方法和系统。

    Method and system for testing the performance of DSP
    7.
    发明授权
    Method and system for testing the performance of DSP 有权
    用于测试DSP性能的方法和系统

    公开(公告)号：US06629279B1

    公开(公告)日：2003-09-30

    申请号：US09594866

    申请日：2000-06-15

    申请人： Suman Narayan ,  Tandhoni S. Rao

    发明人： Suman Narayan ,  Tandhoni S. Rao

    IPC分类号： G01R3128

    CPC分类号： G06F11/2635 ,  G06F11/2236 ,  G06F11/277

    摘要： A method of testing the performance of real time DSP algorithms after customer code has been added and includes the steps of embedding a signature equation in the DSP code that calculates to a given signature value at the output of the DSP when running a test mode program through the DSP.

    摘要翻译： 一种在添加客户代码之后测试实时DSP算法的性能的方法，包括在运行测试模式程序时通过在DSP的输出处计算给DSP的输出处的给定签名值时嵌入签名方程的步骤 DSP。

    SYSTEM, METHOD AND APPARATUS FOR CONNECTING MULTIPLE AUDIO/VIDEO SOURCES TO AN AUDIO/VIDEO SINK
    8.
    发明申请
    SYSTEM, METHOD AND APPARATUS FOR CONNECTING MULTIPLE AUDIO/VIDEO SOURCES TO AN AUDIO/VIDEO SINK 审中-公开
    用于将多个音频/视频源连接到音频/视频SINK的系统，方法和装置

    公开(公告)号：US20080168519A1

    公开(公告)日：2008-07-10

    申请号：US11968563

    申请日：2008-01-02

    申请人： Tandhoni S. Rao ,  Samuel J. MacMullan ,  Steven S. Fastert ,  Bhavin Patel ,  Donald W. Bryce

    发明人： Tandhoni S. Rao ,  Samuel J. MacMullan ,  Steven S. Fastert ,  Bhavin Patel ,  Donald W. Bryce

    IPC分类号： H04N7/173

    CPC分类号： G06F3/14

    摘要： An audio/video switching system is described that selectively enables multiple heterogeneous audio/video sources to transmit data to a single audio/video sink such as a display or audio/video repeater. The audio/video switching system supports format conversion to enable, for example, multiple different audio/video formats to be transmitted to the audio/video sink using a single link. In some implementations, the single link is a high-bandwidth, high-quality wireless link for carrying high definition and standard definition audio/video signals. Various home theater systems that include such an audio/video switching system are also described herein.

    摘要翻译： 描述了一种音频/视频切换系统，其选择性地使多个异构音频/视频源能够将数据传输到诸如显示器或音频/视频中继器的单个音频/视频接收器。 音频/视频切换系统支持格式转换，以使得例如可以使用单个链路将多个不同的音频/视频格式发送到音频/视频接收器。 在一些实现中，单链路是用于承载高清晰度和标准清晰度音频/视频信号的高带宽，高质量无线链路。 本文还描述了包括这种音频/视频切换系统的各种家庭影院系统。

    Method and system for secure and efficient wireless transmission of HDCP-encrypted HDMI/DVI signals
    9.
    发明申请
    Method and system for secure and efficient wireless transmission of HDCP-encrypted HDMI/DVI signals 审中-公开
    HDCP加密HDMI / DVI信号的安全高效无线传输方法和系统

    公开(公告)号：US20080101467A1

    公开(公告)日：2008-05-01

    申请号：US11588263

    申请日：2006-10-27

    申请人： Samuel J. MacMullan ,  Tandhoni S. Rao ,  Jeff Winston ,  Jianhan Liu ,  Ming Zhang

    发明人： Samuel J. MacMullan ,  Tandhoni S. Rao ,  Jeff Winston ,  Jianhan Liu ,  Ming Zhang

    IPC分类号： H04N7/12

    CPC分类号： H04N7/12 ,  G06F3/14 ,  G09G5/006 ,  G09G5/02 ,  H04N7/0135 ,  H04N7/0142 ,  H04N7/015

    摘要： The present invention is directed to methods and systems for enabling secure and efficient wireless transmission of HDCP-encrypted high definition (HD) signals. In one aspect, the present invention provides methods and systems for reducing the data rate required to convey HD content to enable direct wireless transmission of HD content. In another aspect, the present invention provides methods and systems for reducing the data rate required to convey HD content that are compatible with HDCP encryption of content. In a further aspect, the present invention provides methods and systems for reducing the data rate required to convey HD content while maintaining a high quality of content.

    摘要翻译： 本发明涉及用于实现HDCP加密的高清晰度（HD）信号的安全和有效的无线传输的方法和系统。 在一个方面，本发明提供了用于降低传送HD内容以实现HD内容的直接无线传输所需的数据速率的方法和系统。 在另一方面，本发明提供了用于降低传送与内容的HDCP加密兼容的HD内容所需的数据速率的方法和系统。 在另一方面，本发明提供了用于降低传送HD内容同时保持高质量内容所需的数据速率的方法和系统。

    System, method and apparatus for transmitting high definition signals over a combined fiber and wireless system
    10.
    发明申请
    System, method and apparatus for transmitting high definition signals over a combined fiber and wireless system 审中-公开
    用于通过组合光纤和无线系统发送高清晰度信号的系统，方法和装置

    公开(公告)号：US20070291938A1

    公开(公告)日：2007-12-20

    申请号：US11546381

    申请日：2006-10-12

    申请人： Tandhoni S. Rao ,  Samuel J. MacMullan ,  Steven S. Fastert

    发明人： Tandhoni S. Rao ,  Samuel J. MacMullan ,  Steven S. Fastert

    IPC分类号： H04N7/167

    CPC分类号： G09G5/006 ,  G09G2330/06 ,  G09G2370/04 ,  G09G2370/047 ,  G09G2370/12

    摘要： A system, method, and apparatus that improves the efficiency of HD content delivery systems. An embodiment of the invention eliminates unnecessary encoding overhead due to TMDS encoding in HD content delivery systems. An embodiment of the invention further allows for increased error protection at lower overhead in HD content delivery systems. Furthermore, embodiments of the present invention provide less expensive and more efficient techniques for transmitting content protection information in HD content delivery systems. The invention is applicable to HD content delivery systems such as DVI and HDMI systems, including systems that employ novel data transmission techniques of the present invention as well as conventional content delivery systems. The invention is applicable to copper and fiber HD content delivery systems.

    摘要翻译： 一种提高高清内容传送系统效率的系统，方法和装置。 本发明的实施例消除了由于HD内容传送系统中的TMDS编码引起的不必要的编码开销。 本发明的实施例进一步允许在HD内容传送系统中在较低开销下增加错误保护。 此外，本发明的实施例提供了用于在HD内容传送系统中传送内容保护信息的更便宜和更有效的技术。 本发明适用于诸如DVI和HDMI系统的HD内容传送系统，包括采用本发明的新型数据传输技术的系统以及传统的内容传送系统。 本发明适用于铜和纤维高清内容传送系统。