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51. 发明申请

US20090268646A1 Line Driver For An Adaptive Hybrid Circuit 有权
标题翻译：自适应混合电路的线路驱动器
公开(公告)号：US20090268646A1
公开(公告)日：2009-10-29
申请号：US12497337
申请日：2009-07-02
申请人： Tom Kwan , Sumant Ranganathan
发明人： Tom Kwan , Sumant Ranganathan
IPC分类号： H04B3/23
CPC分类号： H04L5/1423 , H04L25/0278
摘要： A second output transmission signal (“TX2”) added to a line driver is a scaled version of the main output transmission signal (“TX1”). TX2 is scaled from TX1 by a variable scale factor K. An adaptive hybrid circuit subtracts TX1 and TX2 from a line signal carrying both a line transmission signal and a line received signal (“RX”). A programmable impedance Ztune is coupled between the TX2 output of the line driver and the RX output of the adaptive hybrid circuit. A transmission echo in the output RX signal is measured. K and Ztune are then adaptively tuned to minimize the transmission echo. The hybrid in this case becomes a 4-port network, one port specifically added to adaptively cancel the transmission echo in the RX output of the adaptive hybrid circuit. Alternatively, the hybrid may be a 3-port hybrid including variable impedances to cancel the line transmission signal.
摘要翻译：添加到线路驱动器的第二输出发送信号（“TX2”）是主输出发送信号（“TX1”）的缩放版本。 TX2通过可变比例因子K从TX1缩放。自适应混合电路从携带线路传输信号和线路接收信号（“RX”）的线路信号中减去TX1和TX2。可编程阻抗Ztune耦合在线路驱动器的TX2输出和自适应混合电路的RX输出之间。测量输出RX信号中的传输回波。然后自适应调整K和Ztune以最小化传输回波。在这种情况下，混合器成为一个4端口网络，一个专门添加的端口自适应地消除了自适应混合电路的RX输出中的传输回波。或者，混合动力可以是包括可变阻抗以消除线路传输信号的3端口混合器。

52. 发明授权

US07508188B2 On-chip current sensing methods and systems 有权
公开(公告)号：US07508188B2
公开(公告)日：2009-03-24
申请号：US11707023
申请日：2007-02-16
申请人： Sumant Ranganathan , Zhou Lin
发明人： Sumant Ranganathan , Zhou Lin
IPC分类号： G01R15/18
CPC分类号： G01R19/0092 , H03K17/0822
摘要： A switch regulator module includes a switch and a current sensing module. The switch has an input port and an output port. The current sensing module senses a first voltage at the input port of the switch and a second voltage at the output port of the switch. The current sensing module generates a sense signal that is proportional to a current that flows through the switch based on the first and second voltages.

53. 发明申请

US20060136757A1 Multi-regulator power supply chip with common control bus 有权
公开(公告)号：US20060136757A1
公开(公告)日：2006-06-22
申请号：US11158142
申请日：2005-06-21
申请人： Chun-ying Chen , Pieter Vorenkamp , Neil Kim , Sumant Ranganathan
发明人： Chun-ying Chen , Pieter Vorenkamp , Neil Kim , Sumant Ranganathan
IPC分类号： G06F1/26
CPC分类号： H02J1/08 , H02M2001/008 , Y10T307/461 , Y10T307/50 , Y10T307/582 , Y10T307/707
摘要： A system and method for implementing a common control bus in a multi-regulator power supply integrated circuit. The integrated circuit may, for example, comprise first and second power regulator modules that control at least one characteristic of respective power signals. The integrated circuit may also, for example, comprise a communication interface module that receives power control information related to operation of the first and second power regulator modules over a shared data bus. An exemplary method may, for example, comprise receiving power control information over a data bus. The method may also, for example, comprise determining which of a plurality of power regulators corresponds to the received power control information. The method may further, for example, comprise determining a regulator control signal, based at least in part on the received power control information, and provide the regulator control signal to the determined regulator(s) to control operation of the determined regulator(s).

54. 发明授权

US07049990B2 Single loop feed-forward modulator with summing flash quantizer and multi-bit feedback 失效
标题翻译：具有求和闪光量化器和多位反馈的单环前馈调制器
公开(公告)号：US07049990B2
公开(公告)日：2006-05-23
申请号：US10882427
申请日：2004-07-02
申请人： Sumant Ranganathan
发明人： Sumant Ranganathan
IPC分类号： H03M3/00
CPC分类号： H03M3/424 , H03M3/452
摘要： A sigma-delta modulator includes a summing junction that receives an input signal. A plurality of integrators are arranged in series, the integrators output an integrated signal value to a multi-input quantizer. The multi-input quantizer has a plurality of comparators each with switched capacitor inputs. The multi-input quantizer outputs a quantized signal to a multi-bit feedback DAC that drives the summing junction.
摘要翻译： Σ-Δ调制器包括接收输入信号的求和结点。多个积分器被串联布置，积分器将积分信号值输出到多输入量化器。多输入量化器具有多个具有开关电容器输入的比较器。多输入量化器将量化信号输出到驱动求和结的多位反馈DAC。

55. 发明申请

US20060003750A1 Automatic control of portable communication device behavior based on communication acceptance/rejection profile 审中-公开
标题翻译：基于通信接受/拒绝配置文件自动控制便携式通信设备的行为
公开(公告)号：US20060003750A1
公开(公告)日：2006-01-05
申请号：US11166762
申请日：2005-06-24
申请人： Sumant Ranganathan , Pieter Vorenkamp , Neil Kim , Chun-ying Chen
发明人： Sumant Ranganathan , Pieter Vorenkamp , Neil Kim , Chun-ying Chen
IPC分类号： H04M3/00 , H04Q7/20
CPC分类号： H04W8/18 , H04M1/663 , H04M1/72566 , H04M2250/60 , H04W76/10
摘要： A system and method for automatically controlling operation of a portable communication device based on a communication acceptance/rejection profile. Various aspects of the present invention may comprise receiving communication acceptance profile information. An interface module of a portable communication device may, for example, receive such information. Information describing a pending communication may be received. A receiver module of a portable communication device may, for example, receive such information. The communication acceptance profile information and the information describing the pending communication may be analyzed to determine whether to accept the pending communication. A communication acceptance determination module may, for example, perform such analysis. If it is determined that the communication should be accepted, then the communication may be received. A receiver module may perform such receiving. If it is determined that the communication should not be accepted, then the communication might not be received.
摘要翻译：一种用于基于通信接受/拒绝简档来自动控制便携式通信设备的操作的系统和方法。本发明的各个方面可以包括接收通信接受简档信息。便携式通信设备的接口模块可以例如接收这样的信息。可以接收描述未决通信的信息。便携式通信设备的接收机模块可以例如接收这样的信息。可以分析通信接受简档信息和描述未决通信的信息，以确定是否接受未决通信。通信接受确定模块可以例如执行这种分析。如果确定通信应该被接受，则可以接收通信。接收机模块可以执行这样的接收。如果确定通信不被接受，则可能不会收到通信。

56. 发明申请

US20050286191A1 Power supply integrated circuit with multiple independent outputs 审中-公开
标题翻译：电源集成电路具有多个独立输出
公开(公告)号：US20050286191A1
公开(公告)日：2005-12-29
申请号：US11166832
申请日：2005-06-24
申请人： Pieter Vorenkamp , Neil Kim , Sumant Ranganathan , Chun-ying Chen
发明人： Pieter Vorenkamp , Neil Kim , Sumant Ranganathan , Chun-ying Chen
IPC分类号： H02H3/20 , H02J1/08
CPC分类号： H02J1/08 , H02M2001/008 , H02M2001/009
摘要： A system and method for providing, in an integrated power supply circuit, signals corresponding to multiple power supply outputs. Various aspects of the present invention may comprise an integrated circuit. The integrated circuit may comprise a first module that outputs a first signal corresponding to electrical power that is characterized by a first set of power characteristics. The first set of power characteristics may, for example, comprise a first voltage level. The integrated circuit may also comprise a second module that outputs a second signal corresponding to electrical power that is characterized by a second set of power characteristics. The second set of power characteristics may, for example, comprise a second voltage level. The second voltage level may, for example, be substantially similar to the first voltage level, and the first set of power characteristics may, for example, be substantially different than the second set of power characteristics.
摘要翻译：一种用于在集成电源电路中提供对应于多个电源输出的信号的系统和方法。本发明的各个方面可以包括集成电路。集成电路可以包括第一模块，其输出对应于由第一组功率特性表征的电功率的第一信号。第一组功率特性可以例如包括第一电压电平。集成电路还可以包括第二模块，其输出对应于由第二组功率特性表征的电功率的第二信号。第二组功率特性可以例如包括第二电压电平。例如，第二电压电平可以基本上类似于第一电压电平，并且第一组功率特性可以例如显着地不同于第二组功率特性。

57. 发明申请

US20050285639A1 Integrated circuit with on-board power utilization information 有权
标题翻译：具有车载电源利用信息的集成电路
公开(公告)号：US20050285639A1
公开(公告)日：2005-12-29
申请号：US11166830
申请日：2005-06-24
申请人： Chun-ying Chen , Pieter Vorenkamp , Neil Kim , Sumant Ranganathan
发明人： Chun-ying Chen , Pieter Vorenkamp , Neil Kim , Sumant Ranganathan
IPC分类号： G06F1/26 , H03L7/00
CPC分类号： G06F1/26
摘要： A system and method for storing power utilization information in an integrated circuit and utilizing such information. Various aspects of the present invention provide an integrated circuit that comprises a first module, which stores power utilization information for at least a portion of the integrated circuit. A second module of the integrated circuit may communicate the power utilization information with an electrical device external to the integrated circuit. Various aspects of the present invention provide a method for storing power utilization information in an integrated circuit. For example, a performance characteristic and/or a power supply characteristic may be monitored as the integrated circuit is utilized. Power utilization information may be determined from the monitored characteristic(s), and the power utilization information may be stored in the integrated circuit. Various aspects of the present invention also provide a system and method for utilizing an integrated circuit having on-board power utilization information.
摘要翻译：一种用于在集成电路中存储功率利用信息并利用这种信息的系统和方法。本发明的各个方面提供一种集成电路，其包括第一模块，其存储用于集成电路的至少一部分的功率利用信息。集成电路的第二模块可以将功率利用信息与集成电路外部的电气设备进行通信。本发明的各个方面提供了一种用于在集成电路中存储功率利用信息的方法。例如，当利用集成电路时，可以监视性能特征和/或电源特性。功率利用信息可以从所监视的特性确定，并且功率利用信息可以存储在集成电路中。本发明的各个方面还提供一种利用具有车载功率利用信息的集成电路的系统和方法。

58. 发明申请

US20050238123A1 Method and system for charge sensing with variable gain, offset compensation, and demodulation 有权
标题翻译：具有可变增益，偏移补偿和解调的电荷感测方法和系统
公开(公告)号：US20050238123A1
公开(公告)日：2005-10-27
申请号：US11115226
申请日：2005-04-27
申请人： Sumant Ranganathan , Tom Kwan , Hung-Sung Li
发明人： Sumant Ranganathan , Tom Kwan , Hung-Sung Li
IPC分类号： G01D5/24 , G01L9/12 , G01P15/125 , H04L27/06
CPC分类号： G01D5/24 , G01L9/12 , G01P15/125
摘要： Provided are a method and system for digitizing a sensor model output signal. The system includes a filter, a demodulator coupled to the filter, a DC offset cancellation mechanism coupled to the demodulator, and an analog to digital converter (ADC). The ADC is directly coupled to the demodulator and the DC offset cancellation mechanism.
摘要翻译：提供了一种用于数字化传感器模型输出信号的方法和系统。该系统包括滤波器，耦合到滤波器的解调器，耦合到解调器的DC偏移消除机构，以及模数转换器（ADC）。 ADC直接耦合到解调器和DC偏移消除机制。

59. 发明申请

US20050057283A1 Sample and hold circuit based on an ultra linear switch 有权
标题翻译：基于超线性开关的采样和保持电路
公开(公告)号：US20050057283A1
公开(公告)日：2005-03-17
申请号：US10927416
申请日：2004-08-27
申请人： Sumant Ranganathan
发明人： Sumant Ranganathan
IPC分类号： G11C27/02 , H03K5/00 , H03K17/06 , H03K17/687 , H03K17/693
CPC分类号： H03K17/063 , G11C27/02 , H03K17/6872 , H03K17/693
摘要： A sample and hold circuit including a plurality of input signal sampling switches using native NMOS transistors in combination with switched bulk PMOS transistors. The input signal sampling switches input a differential input signal and output an intermediate differential signal. A plurality of capacitors are connected to the intermediate differential signal. A plurality of summing junction switches receive charge stored on the plurality of capacitors, and output a differential sampled and held charge to the summing junction. The plurality of input signal sampling switches include first, second, third, and fourth switches each having an input and an output. Inputs of the first and third switches are connected to a first voltage of the differential input voltage. Inputs of the second and fourth switches are connected to a second voltage of the differential input voltage. Outputs of the first and second switches are connected together and to an input of a first capacitor of the plurality of capacitors. Outputs of the third and fourth switches are connected together and to an input of a second capacitor of the plurality of capacitors.
摘要翻译：采样和保持电路包括使用天然NMOS晶体管与开关体PMOS晶体管组合的多个输入信号采样开关。输入信号采样开关输入差分输入信号并输出中间差分信号。多个电容器连接到中间差分信号。多个求和结开关接收存储在多个电容器上的电荷，并且向加法结输出差分采样和保持的电荷。多个输入信号采样开关包括具有输入和输出的第一，第二，第三和第四开关。第一和第三开关的输入端连接到差分输入电压的第一电压。第二和第四开关的输入连接到差分输入电压的第二电压。第一和第二开关的输出端连接在一起并连接到多个电容器的第一电容器的输入端。第三和第四开关的输出端连接在一起并连接到多个电容器的第二电容器的输入端。

60. 发明申请

US20050046460A1 Amplifier compensation techniques for switched capacitor circuits 失效
标题翻译：开关电容电路的放大器补偿技术
公开(公告)号：US20050046460A1
公开(公告)日：2005-03-03
申请号：US10835401
申请日：2004-04-30
申请人： Sumant Ranganathan
发明人： Sumant Ranganathan
IPC分类号： G06G7/18 , H03F1/34 , H03F3/00 , H03F3/45
CPC分类号： H03F3/005 , H03F1/34 , H03F3/45475 , H03F2200/159 , H03F2203/45514
摘要： A system and method are used to maintain a variance in feedback factors of an amplifier between the first and second phases either below a threshold value or within a specified range. The system includes the amplifier and first through third capacitances. The amplifier is coupled between an input node and an output node that operates during first and second phases of operation. The first capacitance is coupled across the amplifier and between the input node and the output node during the first and second phases of operation. The second capacitance is coupled to the input node during the first phase of operation. The third capacitance is coupled to one of the input and output nodes during one or both of the first and second phases of operation.
摘要翻译：使用系统和方法来维持第一和第二相之间的放大器的反馈因子的差异，或者低于阈值或在指定范围内。该系统包括放大器和第一至第三电容。放大器耦合在输入节点和在第一和第二操作阶段期间操作的输出节点。在操作的第一和第二阶段期间，第一电容跨越放大器并且在输入节点和输出节点之间耦合。第二电容在第一阶段操作期间耦合到输入节点。在操作的第一和第二阶段中的一个或两个期间，第三电容耦合到输入和输出节点中的一个。

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