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21. 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。

22. 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。

23. 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。

24. 发明授权

US07006939B2 Method and apparatus for low cost signature testing for analog and RF circuits 失效
公开(公告)号：US07006939B2
公开(公告)日：2006-02-28
申请号：US09837887
申请日：2001-04-18
申请人： Ram Voorakaranam , Abhijit Chatterjee , Pramodchandran N. Variyam , Sasikumar Cherubal , Alfred V. Gomes
发明人： Ram Voorakaranam , Abhijit Chatterjee , Pramodchandran N. Variyam , Sasikumar Cherubal , Alfred V. Gomes
IPC分类号： G06F11/263
CPC分类号： G01R31/2837
摘要： A low cost signature test for RF and analog circuits. A model is provided to predict one or more performance parameters characterizing a first electronic circuit produced by a manufacturing process subject to process variation from the output of one or more second electronic circuits produced by the same process in response to a selected test stimulus, and iteratively varying the test stimulus to minimize the error between the predicted performance parameters and corresponding measured values for the performance parameters, for determining an optimized test stimulus. A non-linear model is preferably constructed for relating signature test results employing the optimized test stimulus in manufacturing testing to circuit performance parameters.

25. 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。

26. 发明授权

US06625785B2 Method for diagnosing process parameter variations from measurements in analog circuits 失效
公开(公告)号：US06625785B2
公开(公告)日：2003-09-23
申请号：US09838404
申请日：2001-04-19
申请人： Abhijit Chatterjee , Sasikumar Cherubal
发明人： Abhijit Chatterjee , Sasikumar Cherubal
IPC分类号： G06F1750
CPC分类号： H01L22/20 , G06F17/5036 , G06F2217/10
摘要： A method for diagnosing process parameter variations from measurements in analog circuits. The diagnosability conditions for the accurate computation of device parameters are extended in the presence of measurement noise. In case this diagnosability condition is not met by standard test signals, a method is provided for automatically generating optimized tests that enable the computation of device parameters. The test generator explicitly optimizes the ability to compute device parameters from the test response. A cause-effect analysis engine is provided to diagnose the cause of variation in IC performance metrics in terms of the variation in device parameter values. Once the cause of parametric yield loss is diagnosed in terms of device parameters variations, the information can be used by process engineers to tune the manufacturing process to improve yield.

27. 发明授权

US06476741B2 Method and system for making optimal estimates of linearity metrics of analog-to-digital converters 失效
标题翻译：用于对模拟 - 数字转换器进行线性度量的最佳估计的方法和系统
公开(公告)号：US06476741B2
公开(公告)日：2002-11-05
申请号：US09838359
申请日：2001-04-19
申请人： Sasikumar Cherubal , Abhijit Chatterjee
发明人： Sasikumar Cherubal , Abhijit Chatterjee
IPC分类号： H03M110
CPC分类号： H03M1/109 , H03M1/12
摘要： A method and system for making optimal estimates of linearity metrics of analog-to-digital converters. A model building phase and a production test strategy are employed. During the model-building phase, a linear model an analog-to-digital converter is constructed from a set of accurately measured transition code voltages for a set of training analog-to-digital converters. During a production test of an individual analog-to-digital converter, a ramp test signal is applied to the individual analog-to-digital converter, a histogram of codes is produced, and the transition code voltages for the individual analog-to-digital converter are estimated from the resulting histogram. Linearity characteristics of the individual analog-to-digital converter may then be computed.
摘要翻译：一种用于对模数转换器的线性度量进行最佳估计的方法和系统。采用模型建立阶段和生产测试策略。在模型构建阶段期间，模拟 - 数字转换器的线性模型由一组训练模数转换器的一组准确测量的转换代码电压构成。在单个模拟 - 数字转换器的生产测试期间，斜坡测试信号被施加到单个模数转换器，产生代码直方图，并且针对各个模数转换器的转换代码电压转换器根据最终的直方图进行估计。然后可以计算各个模拟 - 数字转换器的线性特性。

28. 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。

29. 发明申请

US20130213828A1 DESICCANT CONTAINER 审中-公开
标题翻译：吸附容器
公开(公告)号：US20130213828A1
公开(公告)日：2013-08-22
申请号：US13878576
申请日：2011-10-01
申请人： Abhijit Chatterjee , Ramesh Rajendra Shetty
发明人： Abhijit Chatterjee , Ramesh Rajendra Shetty
IPC分类号： A61J1/03
CPC分类号： A61J1/03 , B65D81/266 , B65D2585/56
摘要： The present application relates to a container for storing tablets and/or capsules. The container may include an upper portion and a bottom portion which defines an integrated chamber, rib profile and a separator means snap-locked in the rib profile. The separator means may include perforated disc means.
摘要翻译：本申请涉及一种用于储存片剂和/或胶囊的容器。容器可以包括上部和底部，其限定一体化的室，肋轮廓和卡扣锁定在肋轮廓中的分离器装置。分离装置可以包括穿孔盘装置。

30. 发明申请

US20120128041A1 POWER CONSCIOUS SELF-HEALING TRANSCEIVER SYSTEMS AND METHODS 有权
标题翻译：功率自适应收发系统和方法
公开(公告)号：US20120128041A1
公开(公告)日：2012-05-24
申请号：US13109506
申请日：2011-05-17
申请人： Abhijit Chatterjee , Shreyas Sen , Shyam Kumar Devarakond , Vishwanath Natarajan
发明人： Abhijit Chatterjee , Shreyas Sen , Shyam Kumar Devarakond , Vishwanath Natarajan
IPC分类号： H04B1/38
CPC分类号： H04B1/0003
摘要： The various embodiments of the present disclosure relate generally to power-conscious self-healing transceiver systems and methods. An embodiment of the present invention provides a method of power-consciously self-healing a transceiver system. The method comprises providing a transceiver device having a plurality of tuning elements configured to control a plurality of specifications of the device, determining initial values for the plurality of tuning elements, and performing a hardware-iterative gradient search to obtain values for each tuning element such that the plurality of specifications are within a tolerated range.
摘要翻译：本公开的各种实施例总体上涉及功率意识的自愈收发器系统和方法。本发明的一个实施例提供了一种有能力自愈自愈收发机系统的方法。该方法包括提供收发器设备，其具有被配置为控制设备的多个规格的多个调谐元件，确定多个调谐元件的初始值，以及执行硬件迭代梯度搜索以获得每个调谐元件的值，如多个规格在允许的范围内。

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