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91. 发明授权

US07158574B2 Digital interface in radio-frequency apparatus and associated methods 有权
标题翻译：射频设备数字接口及相关方法
公开(公告)号：US07158574B2
公开(公告)日：2007-01-02
申请号：US09821340
申请日：2001-03-29
申请人： G. Diwakar Vishakhadatta , Jeffrey W. Scott , G. Tyson Tuttle , Vishnu Shankar Srinivasan , Aslamali A. Rafi
发明人： G. Diwakar Vishakhadatta , Jeffrey W. Scott , G. Tyson Tuttle , Vishnu Shankar Srinivasan , Aslamali A. Rafi
IPC分类号： H04L27/00 , H04B1/38
CPC分类号： H04B1/0003 , H04B1/28 , H04B1/406 , H04B15/02
摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The interface between the receiver analog circuitry and the receiver digital circuitry includes configurable signal lines that function as a serial interface, or as a data and clock signal interface, depending on the state of a control signal.
摘要翻译：射频（RF）设备包括接收模拟电路，其接收RF信号并且向与接收机模拟电路协作起作用的接收机数字电路提供至少一个数字信号。接收器模拟电路和接收机数字电路之间的接口包括用作串行接口的可配置信号线，或者根据控制信号的状态作为数据和时钟信号接口。

92. 发明授权

US07072389B2 Direct digital access arrangement circuitry and method for connecting to phone lines 失效
公开(公告)号：US07072389B2
公开(公告)日：2006-07-04
申请号：US10227104
申请日：2002-08-23
申请人： Jeffrey W. Scott , Navdeep S Sooch , David R. Welland
发明人： Jeffrey W. Scott , Navdeep S Sooch , David R. Welland
IPC分类号： H04B1/38 , H04L5/16
CPC分类号： H04M1/573 , H04L7/033 , H04L25/0266 , H04L25/06 , H04M1/76 , H04M3/007 , H04M11/06 , H04M19/001 , H04M19/02
摘要： An isolation system is provided that is suitable for use in telephony, medical instrumentation, industrial process control and other applications. Preferred embodiments of the invention comprise a capacitive isolation barrier across which a digital signal is communicated. The system provides a means of communication across the isolation barrier that is highly immune to amplitude and phase noise interference. Clock recovery circuitry may be employed on one side of the isolation barrier to extract timing information from the digital signal communicated across the barrier, and to filter the effects of phase noise introduced at the barrier. Delta-sigma converters may be disposed on both sides of the isolation barrier to convert signals between analog and digital domains. An isolated power supply may also be provided on the isolated side of the barrier, whereby direct current is generated in response to the digital data received across the isolation barrier. Finally, a bidirectional isolation system is provided whereby bidirectional communication of digital signals is accomplished using a single pair of isolation capacitors. In preferred embodiments, the digital data communicated across the barrier consists of digital delta-sigma data signals multiplexed in time with other digital control, signaling and framing information.

93. 发明授权

US07046755B2 Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with switchable time constants 有权
标题翻译：用于连接到具有可切换时间常数的DC保持电路的电话线的数字接入配置电路和方法
公开(公告)号：US07046755B2
公开(公告)日：2006-05-16
申请号：US10679046
申请日：2003-10-03
申请人： Timothy J. Dupuis , George Tyson Tuttle , Jeffrey W. Scott , Navdeep S. Sooch , David R. Welland
发明人： Timothy J. Dupuis , George Tyson Tuttle , Jeffrey W. Scott , Navdeep S. Sooch , David R. Welland
IPC分类号： H04L23/00
CPC分类号： H04L25/06 , H04L7/033 , H04L25/0266 , H04M11/06 , H04M19/001
摘要： A digital direct access arrangement (DAA) circuitry may be used to terminate the telephone connections at the user's end that provides a communication path for signals to and from the phone lines. Briefly described, the DAA provides a programmable means for the DC termination for a variety of international phone standards. The invention may also be utilized with means for transmitting and receiving a signal across a capacitive isolation barrier. More particularly, a DC holding circuit is provided in which a programmable DC current limiting mode is available. In the current limiting mode, power may be dissipated in devices external to a DAA integrated circuit. Moreover, much of the power may be dissipated in external passive devices, such as resistors.
摘要翻译：可以使用数字直接访问布置（DAA）电路来终止在用户端的电话连接，其提供用于到达和来自电话线的信号的通信路径。简要描述，DAA提供用于各种国际电话标准的DC终端的可编程装置。本发明还可以用于在电容隔离屏障上传输和接收信号的装置。更具体地，提供了一种DC可编程直流限流模式可用的直流保持电路。在限流模式下，功率可能会在DAA集成电路外部的器件中耗散。此外，大部分功率可能会在外部无源器件（如电阻）中消散。

94. 发明授权

US07024221B2 Notch filter for DC offset reduction in radio-frequency apparatus and associated methods 有权
公开(公告)号：US07024221B2
公开(公告)日：2006-04-04
申请号：US10075099
申请日：2002-02-12
申请人： Tod Paulus , Richard T. Behrens , Vishnu S. Srinivasan , Mark S. Spurbeck , Donald A. Kerth , Jeffrey W. Scott , G. Tyson Tuttle , G. Diwakar Vishakhadatta
发明人： Tod Paulus , Richard T. Behrens , Vishnu S. Srinivasan , Mark S. Spurbeck , Donald A. Kerth , Jeffrey W. Scott , G. Tyson Tuttle , G. Diwakar Vishakhadatta
IPC分类号： H04B1/38 , H04M1/00
CPC分类号： H04B1/0003 , H04B1/28 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064
摘要： A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry coupled together. The receiver analog circuitry receives an RF signal. The receiver analog circuitry processes the received RF signal and generates a digital signal that it provides to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal provided by a receiver analog circuitry with a digital intermediate frequency (IF) local oscillator signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal. The digital filter circuitry provides a notch at a frequency that corresponds to a residual DC offset of the receiver analog circuitry.

95. 发明授权

US07007154B2 Method and apparatus for interfacing a processor to a coprocessor 有权
公开(公告)号：US07007154B2
公开(公告)日：2006-02-28
申请号：US10007836
申请日：2001-11-05
申请人： William C. Moyer , John Arends , Jeffrey W. Scott
发明人： William C. Moyer , John Arends , Jeffrey W. Scott
IPC分类号： G06F15/00
CPC分类号： G06F9/3012 , G06F9/30116 , G06F9/3861 , G06F9/3879 , G06F9/3881
摘要： A processor (12) to coprocessor (14) interface supporting multiple coprocessors (14, 16) utilizes compiler generatable software type function call and return, instruction execute, and variable load and store interface instructions. Data is moved between the processor (12) and coprocessor (14) on a bi-directional shared bus (28) either implicitly through register snooping and broadcast, or explicitly through function call and return and variable load and store interface instructions. The load and store interface instructions allow selective memory address preincrementation. The bi-directional bus (28) is potentially driven both ways on each clock cycle. The interface separates interface instruction decode and execution. Pipelined operation is provided by indicating decoded instruction discard by negating a decode signal before an execute signal is asserted.

96. 发明授权

US06993314B2 Apparatus for generating multiple radio frequencies in communication circuitry and associated methods 有权
公开(公告)号：US06993314B2
公开(公告)日：2006-01-31
申请号：US10074591
申请日：2002-02-13
申请人： Lysander Lim , Caiyi Wang , David R. Welland , Donald A. Kerth , Richard T. Behrens , Jeffrey W. Scott , G. Diwakar Vishakhadatta , G. Tyson Tuttle , Vishnu S. Srinivasan
发明人： Lysander Lim , Caiyi Wang , David R. Welland , Donald A. Kerth , Richard T. Behrens , Jeffrey W. Scott , G. Diwakar Vishakhadatta , G. Tyson Tuttle , Vishnu S. Srinivasan
IPC分类号： H04N1/28
CPC分类号： H04B1/0003 , H03L7/085 , H03L7/087 , H03L7/091 , H03L7/099 , H03L7/187 , H03L7/199 , H03L7/23 , H04B1/28 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064
摘要： A radio-frequency (RF) apparatus capable of transmitting RF signals includes transmitter path circuitry. The transmitter path circuitry includes a voltage-controlled oscillator (VCO) circuitry. The VCO circuitry generates a first signal that has a first frequency. A divider circuitry couples to the VCO circuitry and, in response to the first signal, the divider circuitry generates a second signal that has a second frequency. The frequency of the second signal equals the frequency of the first signal divided by a number.

97. 发明授权

US06975723B2 Architecture for minimum loop current during ringing and caller ID 失效
标题翻译：振铃期间最小回路电流的结构和来电显示
公开(公告)号：US06975723B2
公开(公告)日：2005-12-13
申请号：US10429795
申请日：2003-05-05
申请人： Jeffrey W. Scott , Navdeep S. Sooch , David R. Welland , Jerrell P. Hein , Andrew W. Krone
发明人： Jeffrey W. Scott , Navdeep S. Sooch , David R. Welland , Jerrell P. Hein , Andrew W. Krone
IPC分类号： H03M1/42 , H04L7/033 , H04L25/02 , H04L25/06 , H04M1/57 , H04M11/06 , H04M19/00 , H04M19/02 , H04M1/00 , H04M9/00
CPC分类号： H04M1/573 , H04L7/033 , H04L25/0266 , H04L25/06 , H04M11/06 , H04M19/001 , H04M19/02
摘要： A communication system is provided which draws virtually no loop current during a ringing burst and only draws on-hook loop current during the caller ID field. More particularly, ringer burst circuitry may be powered from the user powered circuitry by the transmission of power across the isolation barrier rather than being powered from the phone line. Thus, loop current need not be drawn from the TIP/RING lines during ringer bursts. The isolation barrier may be a capacitive isolation barrier which allows bidirectional communication and extraction of power from signals transmitted across the barrier.
摘要翻译：提供一种通信系统，其在振铃突发期间几乎不消除环路电流，并且仅在呼叫者ID字段期间吸引挂机环路电流。更具体地，振铃突发电路可以由用户供电的电路通过跨隔离屏障的功率传输而不是从电话线供电。因此，在振铃器脉冲串期间，不需要从TIP / RING线路中抽出回路电流。隔离屏障可以是电容隔离屏障，其允许通过屏障传输的信号的双向通信和功率提取。

98. 发明授权

US06882673B1 Mirror structure for reducing the effect of feedback on a VCSEL 有权
公开(公告)号：US06882673B1
公开(公告)日：2005-04-19
申请号：US10051510
申请日：2002-01-15
申请人： John Wasserbauer , Jeffrey W. Scott
发明人： John Wasserbauer , Jeffrey W. Scott
IPC分类号： H01S3/08 , H01S5/00 , H01S5/183 , H01S5/20 , H01S5/343
CPC分类号： B82Y20/00 , H01S5/18308 , H01S5/18316 , H01S5/18341 , H01S5/18369 , H01S5/18377 , H01S5/2022 , H01S5/2063 , H01S5/3432 , H01S2301/166
摘要： An exemplary embodiment of the present invention integrates an absorbing layer into the emitting mirror of a VCSEL to reduce the reflectivity of the emitting mirror as seen by the feedback optical wave. The absorbing layer may be made of a suitable semiconductor material, such as a GaAs layer in a laser emitting near 850 nm or highly doped p-layer, and may disposed epitaxially in a semiconductor or metamorphic mirror. Alternatively, a metal layer may be disposed in the dielectric portion of a hybrid mirror or all-dielectric mirror.

99. 发明授权

US06865667B2 Data processing system having redirecting circuitry and method therefor 有权
标题翻译：数据处理系统具有重定向电路及其方法
公开(公告)号：US06865667B2
公开(公告)日：2005-03-08
申请号：US09798390
申请日：2001-03-05
申请人： William C. Moyer , Jeffrey W. Scott , John H. Arends
发明人： William C. Moyer , Jeffrey W. Scott , John H. Arends
IPC分类号： G06F9/318 , G06F9/32 , G06F9/445 , G06F9/00
CPC分类号： G06F8/66 , G06F9/3017 , G06F9/30185 , G06F9/328
摘要： Embodiments of the present invention relate generally to data processing systems having redirecting circuitry. For example, one embodiment relates to redirecting program flow in a data processing system having a data processor for executing instructions, and circuitry that redirects program flow by identifying an address corresponding to an instruction provided to the data processor for which program execution should be redirected when the instruction is decoded by the data processor. The circuitry also generates a control field having an offset corresponding to the address and using the control field to determine when program flow should be redirected. The circuitry creates a redirected address value by combining a portion of the control field with a predetermined address. The data processor implements redirection of program flow by utilizing the redirected address value. Embodiments also relate to redirecting data accesses and to redirecting program flow while remaining in a same execution context.
摘要翻译：本发明的实施例一般涉及具有重定向电路的数据处理系统。例如，一个实施例涉及在具有用于执行指令的数据处理器的数据处理系统中的重定向程序流程，以及通过识别与提供给数据处理器的指令对应的地址来重定向程序流的电路，该指令由数据处理器解码。电路还产生具有对应于地址的偏移的控制字段，并且使用控制字段来确定何时将重定向程序流程。电路通过将控制字段的一部分与预定地址组合来创建重定向的地址值。数据处理器通过利用重定向的地址值实现程序流的重定向。实施例还涉及重定向数据访问和重定向程序流，同时保持在相同的执行上下文中。

100. 发明授权

US06823066B1 Digital access arrangement circuitry and method having current ramping control of the hookswitch 失效
公开(公告)号：US06823066B1
公开(公告)日：2004-11-23
申请号：US09347689
申请日：1999-07-02
申请人： George Tyson Tuttle , Jeffrey W. Scott , Navdeep S. Sooch , David R. Welland
发明人： George Tyson Tuttle , Jeffrey W. Scott , Navdeep S. Sooch , David R. Welland
IPC分类号： H04M100
CPC分类号： H04L25/0266 , H04L7/033 , H04L25/06 , H04M11/06 , H04M19/001
摘要： A digital direct access arrangement (DAA) circuitry may be used to terminate the telephone connections at the user's end to provide a communication path for signals to and from the phone lines. Briefly described, a means for providing a proper hookswitch transition for a variety of international phone standards is provided. The invention may also be utilized with means for transmitting and receiving a signal across a capacitive isolation barrier. More particularly, a DAA circuitry may be utilized which satisfies many or all hookswitch transition standards without the use of additional discrete devices. The hookswitch transition standards may be satisfied by ramping down the current flowing through the hookswitch prior to transitioning the hookswitch state. In this manner the hookswitch current change as a function of time (di/dt) may be decreased. Thus, the current through the hookswitch may be actively controlled prior to switching the hookswitch from an off-hook condition to an on-hook condition. By controlling the current drawn from the phone lines through the hookswitch, the maximum voltage seen at the phone company exchange may be decreased.

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