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21. 发明申请

US20060195891A1 Network status indication system 审中-公开
标题翻译：网络状态指示系统
公开(公告)号：US20060195891A1
公开(公告)日：2006-08-31
申请号：US11302444
申请日：2005-12-13
申请人： Phillip Freyman , Gordon Beacham , Abhijit Chatterjee , Christopher Cotignola
发明人： Phillip Freyman , Gordon Beacham , Abhijit Chatterjee , Christopher Cotignola
IPC分类号： H04L9/32 , G06K9/00 , G06F17/30 , G06F15/16 , G06F7/04 , G06F7/58 , G06K19/00
CPC分类号： H04L67/36 , H04L69/40
摘要： A system for signaling a distributed network status indication to a local user includes an access device configured to monitor a status of the distributed network and a processing module configured to process information pertaining to the monitored status of the distributed network. The system also includes at least one user device comprising a status identifier, where the processing module is configured to transmit a signal to the at least one user device pertaining to the monitored status of the distributed network, and where the status identifier of the at least one user device is configured to output an indication corresponding to the status of the distributed network.
摘要翻译：用于向本地用户发信号通知分布式网络状态指示的系统包括被配置为监视分布式网络的状态的接入设备和被配置为处理与分布式网络的监控状态有关的信息的处理模块。该系统还包括至少一个包括状态标识符的用户设备，其中处理模块被配置为向与该分布式网络的监视状态有关的至少一个用户设备发送信号，并且其中至少该状态标识符一个用户设备被配置为输出与分布式网络的状态相对应的指示。

22. 发明授权

US07032151B2 Systems and methods for testing integrated circuits 失效
公开(公告)号：US07032151B2
公开(公告)日：2006-04-18
申请号：US10292976
申请日：2002-11-13
申请人： Achintya Halder , Abhijit Chatterjee
发明人： Achintya Halder , Abhijit Chatterjee
IPC分类号： G06F11/00
CPC分类号： G01R31/3167
摘要： Systems and methods for digital-based, standards-compatible, testing of analog circuits embedded inside integrated circuits. In this regard, one such system can be broadly described by a test stimulus generator that transmits a binary-level test-stimulus signal into an analog circuit located inside an integrated circuit; a converter that converts an analog output signal from the analog circuit into a digital output signal; a boundary-scan register chain that transmits the digital output signal out of the integrated circuit, and a test equipment that receives the digital output signal using the IEEE 1149.1 boundary-scan standard and analyzes the digital output signal to compute one or more specifications of the analog circuit located inside the integrated circuit.

23. 发明授权

US5808917A Synthesis of low power linear digital signal processing circuits using activity metrics 失效
标题翻译：使用活动度量的低功率线性数字处理电路的综合
公开(公告)号：US5808917A
公开(公告)日：1998-09-15
申请号：US818084
申请日：1997-03-14
申请人： Abhijit Chatterjee , Rabindra K. Roy
发明人： Abhijit Chatterjee , Rabindra K. Roy
IPC分类号： G06F17/50 , G06F17/10 , G06F9/455
CPC分类号： G06F17/10
摘要： Low power linear digital signal processing circuits are fabricated based on a design synthesis process using activity metrics. The average activity value .theta..sub.i of all the input nodes of the circuit is determined. Architectural transformations of the circuit are performed in order to minimize the average activity value over all the nodes. The transformation resulting in the minimum activity value is the synthesized design used as the basis for fabricating a low power linear digital signal processing circuit.
摘要翻译：基于使用活动度量的设计合成过程制造低功率线性数字信号处理电路。确定电路的所有输入节点的平均活动值θi。执行电路的架构变换，以便最小化所有节点上的平均活动值。导致最小活动值的变换是用作制造低功率线性数字信号处理电路的基础的合成设计。

24. 发明申请

US20170126415A1 Analog Push Pull Amplifier-Based Physically Unclonable Function for Hardware Security 审中-公开
公开(公告)号：US20170126415A1
公开(公告)日：2017-05-04
申请号：US15336895
申请日：2016-10-28
申请人： Sabyasachi Deyati , Abhijit Chatterjee , Barry John Muldrey
发明人： Sabyasachi Deyati , Abhijit Chatterjee , Barry John Muldrey
IPC分类号： H04L9/32
CPC分类号： H04L9/3278
摘要： An authenticating circuit includes a first and second challenge vector input, a first and second highly variable process-dependent circuit and a logic circuit. The first highly variable process-dependent circuit receives a first vector from the first challenge vector input and generates a first output that is a function of the first vector and at least one process-dependent feature of a component of the first highly variable process-dependent circuit. The second highly variable process-dependent circuit receives a second vector from the second challenge vector input and generates a second output that is a function of the second vector and at least one process-dependent feature of a component of the second highly variable process-dependent circuit. The logic circuit generates a response output that is a function of the first output and the second output. The function operates so that the response output is independent of environmental conditions of the authenticating circuit.

25. 发明授权

US09548705B2 Amplifier having orthogonal tuning elements 有权
标题翻译：放大器具有正交调谐元件
公开(公告)号：US09548705B2
公开(公告)日：2017-01-17
申请号：US13831192
申请日：2013-03-14
申请人： Shreyas Sen , Abhijit Chatterjee
发明人： Shreyas Sen , Abhijit Chatterjee
IPC分类号： H03F1/02 , H03F3/193 , H03F1/32
CPC分类号： H03F3/193 , H03F1/0261 , H03F1/3205 , H03F2200/294 , H03F2200/451
摘要： An amplifier having orthogonal tuning elements is provided. In one embodiment, an amplifier comprises an input amplifier stage having a first tuning element used to control a first performance criteria of the amplifier; an output amplifier stage operatively coupled to the first amplifier stage; a bias circuit operatively coupled to the second amplifier stage and having a second tuning element used to control a second performance criteria of the amplifier; and wherein the first tuning element operates substantially independent of the second tuning element.
摘要翻译：提供具有正交调谐元件的放大器。在一个实施例中，放大器包括具有用于控制放大器的第一性能标准的第一调谐元件的输入放大器级; 可操作地耦合到第一放大器级的输出放大器级; 偏置电路，可操作地耦合到第二放大器级，并具有用于控制放大器的第二性能标准的第二调谐元件; 并且其中所述第一调谐元件基本上独立于所述第二调谐元件工作。

26. 发明申请

US20110102080A1 SYSTEMS AND METHODS FOR DISTORTION MEASUREMENT USING DISTORTION-TO-AMPLITUDE TRANSFORMATIONS 有权
标题翻译：使用失真到幅度变换的失真测量的系统和方法
公开(公告)号：US20110102080A1
公开(公告)日：2011-05-05
申请号：US12917386
申请日：2010-11-01
申请人： Abhijit Chatterjee , Shreyas Sen , Shyam Kumar Devarakond
发明人： Abhijit Chatterjee , Shreyas Sen , Shyam Kumar Devarakond
IPC分类号： H03F1/26
CPC分类号： H03F3/193
摘要： The presently invention is directed to ways to measure distortion effects while allowing for the possibility of significant reduction in test cost. An exemplary embodiment of the present invention provides a method for amplifier distortion measurement including comparing a first amplitude response of an output signal from a power amplifier to a second amplitude response of a reference input signal to determine a set of Amplitude-to-Amplitude (“AM-AM”) distortion values. Additionally, the method for amplifier distortion measurement includes equalizing the first amplitude response of the output signal to match the second amplitude response of the reference input signal based on the set of AM-AM distortion values and creating a difference signal based on a comparison of the equalized output signal to the reference input signal. Furthermore, the method for amplifier distortion measurement includes calculating a set of Amplitude-to-Phase (“AM-PM”) distortion values based on a third amplitude response of the difference signal.
摘要翻译：本发明旨在测量失真效应，同时允许显着降低测试成本的可能性。本发明的示例性实施例提供了一种用于放大器失真测量的方法，包括将来自功率放大器的输出信号的第一幅度响应与参考输入信号的第二幅度响应进行比较，以确定幅度 - 幅度（“ AM-AM“）失真值。此外，用于放大器失真测量的方法包括基于AM-AM失真值的集合来均衡输出信号的第一幅度响应以匹配参考输入信号的第二幅度响应，并且基于AM-AM失真值的组合创建差分信号将输出信号均衡到参考输入信号。此外，放大器失真测量的方法包括基于差分信号的第三幅度响应来计算一组幅度相位（“AM-PM”）失真值。

27. 发明授权

US07640571B1 Method and apparatus for preventing disruptions in set-top terminal function due to the download of updated programming or data to the set-top terminal 有权
标题翻译：由于将更新的程序或数据下载到机顶终端，防止机顶终端功能中断的方法和装置
公开(公告)号：US07640571B1
公开(公告)日：2009-12-29
申请号：US09353583
申请日：1999-07-15
申请人： Samuel Reichgott , Abhijit Chatterjee , Charles Schell
发明人： Samuel Reichgott , Abhijit Chatterjee , Charles Schell
IPC分类号： H04N7/10 , H04N7/025 , H04N7/173 , H04N7/16
CPC分类号： H04N21/4432 , H04N21/235 , H04N21/4335 , H04N21/435 , H04N21/4424 , H04N21/4586 , H04N21/8166
摘要： A method and device prevent a set-top terminal from accepting a download of new programming or data over a cable network when the download would be redundant of information already possessed by the set-top terminal or would cause an inconvenience to subscribers. When the set-top terminal is signaled that a new download is being offered, the set-top terminal checks to see if the download in fact contains a newer version of data or programming than is currently resident in the set-top terminal. The set-top terminal also checks whether criteria for accepting a download are met. The criteria are conditions that tend to indicate that an interruption of service to accept a download would not inconvenience the subscriber at that time. When the criteria are met, the download is accepted. Otherwise, the download is not accepted or is not accepted until the criteria are satisfied. Similar criteria govern the termination of the older, executing programming and the execution of the newer, downloaded programming to, again, prevent unwarranted disruptions in service.
摘要翻译：一种方法和装置可以防止机顶盒终端在有线网络上接受新的节目或数据的下载，当下载是机顶终端已经拥有的信息的冗余或者会给用户带来不便时。当机顶终端发出新的下载信号时，机顶终端检查下载是否真的包含比当前驻留在机顶终端中的数据或编程的更新版本。机顶终端还检查是否满足接受下载的条件。标准是这样的条件，倾向于表示接受下载的服务中断不会对用户造成不便。当满足标准时，下载被接受。否则，下载不被接受或不被接受，直到满足标准。类似的标准决定了较旧的执行程序的终止以及更新的下载的程序的执行，以再次防止服务中的不必要的中断。

28. 发明授权

US07251574B1 Measuring bit error rate of radio frequency transceivers 失效
标题翻译：测量射频收发器的误码率
公开(公告)号：US07251574B1
公开(公告)日：2007-07-31
申请号：US11389635
申请日：2006-03-24
申请人： Soumendu Bhattacharya , Rajarajan Senguttuvan , Abhijit Chatterjee
发明人： Soumendu Bhattacharya , Rajarajan Senguttuvan , Abhijit Chatterjee
IPC分类号： G01R25/00
CPC分类号： G01R31/3171 , H04L1/203 , H04L1/206
摘要： A bit error rate test on a transceiver is accelerated by adding a phase offset to data phase encoding and decoding in the transceiver and by mapping bit error rate test results from an elevated error rate condition to a normal error rate condition for the transceiver. The elevated error rate is accomplished by adjusting the phase of the phase encoder and decoder with the value of the phase offset so that the encoded data transmission signal is not as robust against noise as it normally would be. Noise in the form of an interference signal is introduced during the transmission, and the bit error rate is measured after the receiver has decoded the signal. The bit error rate (BER) data with an elevated propensity for error is mapped against bit error rate data for normal operations. A mapping function is built to map BERE (bit error rate elevated) data—data from the elevated error rate condition for data encoding, to BERN (normal bit error rate) data—data from the normal error rate condition for data encoding. The BERE data is mapped to BERN data using the mapping function so that the BER performance of the transceiver may be measured using far fewer test sequences of digital bits.
摘要翻译：通过在收发器中对数据相位编码和解码添加相位偏移，并将误码率测试结果从升高的错误率条件映射到收发器的正常错误率条件来加速收发器上的误码率测试。通过用相位偏移的值调整相位编码器和解码器的相位来实现提高的误码率，使得编码的数据传输信号与通常情况下不如噪声一样鲁棒。在发送期间引入干扰信号形式的噪声，并且在接收机对信号进行解码之后测量误码率。具有升高的误差倾向的误码率（BER）数据被映射到正常操作的误码率数据。构建了映射函数，以将来自用于数据编码的提高的错误率条件的BER（数据比特率提升）的数据数据映射到BER N（正常的比特错误率）数据数据，用于数据编码的正常错误率条件。使用映射函数将BER＆lt; E＆gt;数据映射到BER N N数据，使得可以使用少得多的数字位的测试序列来测量收发器的BER性能。

29. 发明授权

US06977242B2 Two gonadotropin releasing hormones and a method to isolate the same 失效
标题翻译：两种促性腺激素释放激素及其分离方法
公开(公告)号：US06977242B2
公开(公告)日：2005-12-20
申请号：US10354433
申请日：2003-01-28
申请人： Abhijit Chatterjee , Partha Ray , Subrata Dasgupta , Samir Hattacharya , Santosh Pasha
发明人： Abhijit Chatterjee , Partha Ray , Subrata Dasgupta , Samir Hattacharya , Santosh Pasha
IPC分类号： A01K61/00 , A61K38/00 , A61K38/24 , A61P15/00 , B01J20/281 , C07K7/23 , G01N30/46 , G01N30/88 , G01N33/48 , G01N33/68 , A61K38/22 , C07K14/575
CPC分类号： C07K7/23 , A61K38/00 , Y10S930/13
摘要： The present invention relates to two novel Gonadotropin releasing hormones muGnRH I and muGnRH II of amino acid SEQ ID 1 as QHWSAWRLPG, and SEQ ID 2 QHWSWGILPG respectively, useful for induced breeding in fish both in combination and alone, by activating production of Gonadotropin, and a method of isolating the same from Indian Murrel brain, and further, a method of inducing breeding in fishes using the said novel gonadotropin releasing hormones.
摘要翻译：本发明涉及两种新颖的促性腺激素释放激素，分别用于QHWSAWRLPG的氨基酸SEQ ID 1和SEQ ID NO：2的QGWSWGILPG，通过激活促性腺激素的产生可以组合和单独地诱导育种鱼，一种将其从印度Murrel脑分离的方法，此外，使用所述新颖的促性腺激素释放激素在鱼类中诱导育种的方法。

30. 发明授权

US08526533B2 Systems and methods for measuring I-Q mismatch 有权
标题翻译：用于测量I-Q不匹配的系统和方法
公开(公告)号：US08526533B2
公开(公告)日：2013-09-03
申请号：US13114178
申请日：2011-05-24
申请人： Shreyas Sen , Shyam Kumar Devarakond , Abhijit Chatterjee
发明人： Shreyas Sen , Shyam Kumar Devarakond , Abhijit Chatterjee
IPC分类号： H04L25/03
CPC分类号： H04B1/0475 , H04B17/11
摘要： An exemplary embodiment of the present invention provides a method of measuring I-Q mismatch in a system having a transmitter. The transmitter comprises an in-phase up-converter, a quadrature-phase up-converter, and a power detector. The method of measuring I-Q mismatch comprises measuring an in-phase transmit power at the power detector caused by transmitting an in-phase output signal to the in-phase up-converter, measuring a quadrature-phase transmit power at the power detector caused by transmitting a quadrature-phase output signal to the quadrature-phase up-converter, calculating a transmitter-gain-mismatch as a function of the in-phase transmit power and the quadrature-phase transmit power, measuring an I-Q transmit power at the power detector caused by simultaneously transmitting a gain-mismatch-compensated in-phase output signal to the in-phase up-converter and a gain-mismatch-compensated quadrature-phase output signal to the quadrature-phase up-converter, and calculating a transmitter-phase-mismatch as a function of the I-Q transmit power.
摘要翻译：本发明的示例性实施例提供了一种在具有发射机的系统中测量I-Q失配的方法。发射机包括同相上变频器，正交相位上变频器和功率检测器。测量IQ失配的方法包括：通过将同相输出信号发送到同相上变频器来测量在功率检测器处的同相发射功率，测量由发射引起的功率检测器处的正交相位发射功率向正交相位上变频器的正交相输出信号，计算作为同相发射功率和正交相位发射功率的函数的发射机 - 增益失配，测量功率检测器处的IQ发射功率，通过同步地向同相上变频器发送增益失配补偿的同相输出信号，并将增益失配补偿的正交相位输出信号发送到正交上变频器，并且计算发射机 - 作为IQ发射功率的函数的失配。

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