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1. 发明授权

EP0430599B1 Statistically based continuous autocalibration method and apparatus 失效
标题翻译：统计原则IPMENT基于连续自动校准程序，
公开(公告)号：EP0430599B1
公开(公告)日：1998-10-21
申请号：EP90312766.0
申请日：1990-11-23
申请人： Hewlett-Packard Company
发明人： Hilton, Howard E.
IPC分类号： H03M1/10
CPC分类号： H03M1/0641 , G12B13/00 , H03M1/167

2. 发明授权

EP0578489B1 Clock recovery phase detector 失效
标题翻译：用于定时恢复系统的相位检测器
公开(公告)号：EP0578489B1
公开(公告)日：1999-04-21
申请号：EP93305329.0
申请日：1993-07-07
申请人： Hewlett-Packard Company
发明人： Guilford, John H. , Hilton, Howard E.
IPC分类号： H04L7/033
CPC分类号： H04L7/0334

3. 发明公开

EP0578489A1 Clock recovery phase detector 失效
标题翻译： PhasendetektorfüreinTaktrückgewinnungssystem。
公开(公告)号：EP0578489A1
公开(公告)日：1994-01-12
申请号：EP93305329.0
申请日：1993-07-07
申请人： Hewlett-Packard Company
发明人： Guilford, John H. , Hilton, Howard E.
IPC分类号： H04L7/033
CPC分类号： H04L7/0334
摘要： A phase detector (10) for symbol clock recovery in a digital communications system determines the phase error of a local symbol clock (94) from the symbol rate of a transmitted signal by sampling the transmitted signal to obtain a first sample at a fraction of a symbol period after the symbol clock and to obtain a second sample at an equal fraction of a symbol period before the symbol clock, and determining a phase error equal to the difference between a function of the magnitude of the first sample and a function of the magnitude of the second sample. The function is preferably the square of the magnitude or the logarithm of the magnitude of the samples.
摘要翻译：用于数字通信系统中的符号时钟恢复的相位检测器（10）通过对所发送的信号进行采样来确定本发明信号的符号率的本地符号时钟（94）的相位误差，以获得第一采样符号时钟之后的符号周期，并且以符号时钟之前的符号周期的相等部分获得第二采样，并且确定等于第一样本的幅度的函数与幅度函数之间的差的相位误差的第二个样本。该函数优选地是样本幅度的幅度或对数的平方。

4. 发明公开

EP0430599A2 Statistically based continuous autocalibration method and apparatus 失效
标题翻译： Auf statistischen Prinzipien basiertes kontinueierliches Autokalibrierungsverfahren und-gerät。
公开(公告)号：EP0430599A2
公开(公告)日：1991-06-05
申请号：EP90312766.0
申请日：1990-11-23
申请人： Hewlett-Packard Company
发明人： Hilton, Howard E.
IPC分类号： H03M1/10
CPC分类号： H03M1/0641 , G12B13/00 , H03M1/167
摘要： Errors in a sampled data process are discerned statistically throughout the process, permitting their efficient removal. An exemplary application is a subranging analog-to-digital converter (ADC) (10), in which errors associated with component digital-to-analog (DAC) current sources (28. 30. 32) are discerned and corrected automatically during the circuit's normal operation. This is achieved by continually introducing a random signal into the process, statistically examining the DAC output signal to discern error terms, and correlating the occurrences of these errors with the values of the random signal applied to the DACs so as to identity the current sources to which the error terms are due. The resulting ADC output signal is compensated to remove the random signal and is further compensated to remove the DAC error terms discerned by this statistical analysis. The effect of any errors that may remain due to imperfect quantification of the DAC error terms is minimized due to their randomization, permitting the removal of these error terms by averaging techniques.
摘要翻译：在整个过程中，在采样数据流程中的错误在统计上被辨别，从而允许其有效的去除。示例性应用是子阵列模数转换器（ADC）（10），其中与组件数模转换（DAC）电流源（28.30.32）相关联的误差在电路的时候被自动识别和校正普通手术。这是通过将随机信号连续地引入到该过程中，统计学地检查DAC输出信号以辨别误差项，并将这些误差的出现与施加到DAC的随机信号的值相关联以便将当前信号源识别错误条款到期。所得的ADC输出信号被补偿以去除随机信号，并进一步补偿以消除由该统计分析识别的DAC误差项。由于DAC误差项的不完全量化可能保留的任何错误的影响由于其随机化而被最小化，允许通过平均技术去除这些误差项。

5. 发明公开

EP0935339A1 Versatile signal generator 有权
标题翻译： Vielseitiger信号发生器
公开(公告)号：EP0935339A1
公开(公告)日：1999-08-11
申请号：EP99300672.5
申请日：1999-01-29
申请人： Hewlett-Packard Company
发明人： Hilton, Howard E. , Guilford, John H.
IPC分类号： H03C5/00 , H04L27/00 , H04L1/24
CPC分类号： H04L1/244 , H04L27/0008
摘要： A versatile signal generator (100) for generating digitally modulated test signals computed in real-time is provided. Each of the blocks of the versatile signal generator, including the MUX (200), coder (202), map (204), filter (204), re-sampler (104), and complex modulator (110), are implemented in a sufficiently flexible manner so as to allow ready configuration to produce any of a variety of digitally modulated signals as well as high quality analog modulated signals. Each of the blocks may be implemented using ASICs and RAM that to obtain high symbol rates while being capable of being reconfigured for different test signals as needed. The versatile signal generator has a real time input (106) for receiving input data to modulate the test signal in real time.
摘要翻译：提供一种用于生成实时计算的数字调制测试信号的通用信号发生器（100）。包括MUX（200），编码器（202），映射（204），滤波器（204），重新采样器（104）和复数调制器（110）的通用信号发生器的每个块被实现在足够灵活的方式，以便允许准备配置产生各种数字调制信号以及高质量模拟调制信号中的任何一种。可以使用ASIC和RAM来实现每个块，以获得高符号率，同时能够根据需要为不同的测试信号重新配置。通用信号发生器具有用于接收输入数据以实时调制测试信号的实时输入（106）。

6. 发明公开

EP0616433A1 Statistically based continuous autocalibration method and apparatus 失效
标题翻译： Auf die Statistik basiertes kontinueierliches Autokalibrierungsverfahren und-gerät。
公开(公告)号：EP0616433A1
公开(公告)日：1994-09-21
申请号：EP94201105.7
申请日：1990-11-23
申请人： HEWLETT-PACKARD COMPANY
发明人： Hilton, Howard E.
IPC分类号： H03M1/10 , G12B13/00
CPC分类号： H03M1/0641 , G12B13/00 , H03M1/167
摘要： A method for compensating a sampled data process F by removing deviations therefrom to make it more nearly ideal, said process being ideally represented as:

F(X n ) = Y n

where X n is an input and Y n is a scaler output corresponding thereto;
said process actually including one or more process parameters that cause the actual process to deviate from ideal so that the actual process is represented as:

F(X n ,P n ) = Y n '

where X n is the input, P n is a vector representing the parameters for the corresponding sample, and Y n ' is the output of the actual process corresponding to (X n ,P n );
the process being such that:

F(X n ) = F(X n ,P)

where P is a fixed vector representing ideal process parameters;
the method comprising the steps:
providing a random vector Z n ;
performing an operation C on (X n ,Z n ) to yield an output X n ';
performing the operation F on (X n ',P n ) to yield an output W n ';
performing an operation H on (X n ,Z n ) to yield a vector output Z n '; and
performing an operation D on (W n ',Z n ') to yield an output W n ;
calculating the parameter vector P n + 1 for the next sample using the formula:

P n + 1 = P n - (W n ·Z n ')/K

where K is a smoothing constant;
wherein:
operations C, H and D are chosen such that:

W n = Y n = F(X n ,P) = D(F(C(X n ,Z n ),P),H(X n ,Z n ))

and:
the sign of each element of the expected value of [W n Z n '] is the same as the sign of the corresponding element of the expected value of [P n -P].
摘要翻译：一种用于通过从其中去除偏差使其更接近理想来补偿采样数据处理F的方法，所述处理理想地表示为：F（Xn）= Yn，其中Xn是输入，Yn是对应于其的缩放器输出; 所述过程实际上包括使得实际过程偏离理想的一个或多个过程参数，使得实际过程被表示为：F（Xn，Pn）= Yn'，其中Xn是输入，Pn是表示相应的样本，Yn'是对应于（Xn，Pn）的实际过程的输出; 该过程使得：F（Xn）= F（Xn，P>其中P是表示理想过程参数的固定向量;该方法包括以下步骤：提供随机向量Zn;对（Xn，Zn）以产生输出Xn';对（Xn'，Pn）进行运算F out以产生输出Wn';对（Xn，Zn）执行运算H以产生向量输出Zn';以及对 Wn'，Zn'）以产生输出Wn;使用以下公式计算下一个样本的参数向量Pn + 1：Pn + 1 = Pn-（Wn.Zn'）/ K其中K是平滑常数;其中：选择操作C，H和D，使得：Wn = Yn = F（Xn，P）= D（F（C（Xn，Zn），P），H（Xn，Zn） [WnZn']的期望值的元素与[Pn-P]的期望值的对应元素的符号相同。

7. 发明公开

EP0430599A3 Statistically based continuous autocalibration method and apparatus 失效
标题翻译：基于统计学的连续自动化方法和装置
公开(公告)号：EP0430599A3
公开(公告)日：1993-04-14
申请号：EP90312766.0
申请日：1990-11-23
申请人： Hewlett-Packard Company
发明人： Hilton, Howard E.
IPC分类号： H03M1/10
CPC分类号： H03M1/0641 , G12B13/00 , H03M1/167
摘要： Errors in a sampled data process are discerned statistically throughout the process, permitting their efficient removal. An exemplary application is a subranging analog-to-digital converter (ADC) (10), in which errors associated with component digital-to-analog (DAC) current sources (28. 30. 32) are discerned and corrected automatically during the circuit's normal operation. This is achieved by continually introducing a random signal into the process, statistically examining the DAC output signal to discern error terms, and correlating the occurrences of these errors with the values of the random signal applied to the DACs so as to identity the current sources to which the error terms are due. The resulting ADC output signal is compensated to remove the random signal and is further compensated to remove the DAC error terms discerned by this statistical analysis. The effect of any errors that may remain due to imperfect quantification of the DAC error terms is minimized due to their randomization, permitting the removal of these error terms by averaging techniques.

8. 发明公开

EP0347034A3 Improved sensor 失效
标题翻译：改进的传感器
公开(公告)号：EP0347034A3
公开(公告)日：1990-11-28
申请号：EP89304231.7
申请日：1989-04-27
申请人： Hewlett-Packard Company
发明人： Gilbert, Robert A. , Hilton, Howard E. , Rasmussen, David E. , Panek, Charles R. , Danielson, Dan D.
IPC分类号： G08C19/02
CPC分类号： G08C19/02
摘要： A sensor is disclosed which exchanges with associated data acquisition equipment a digital attribute signal, distinct from its transducer output signal, on the occurrence of a predetermined event. The invention is particularly illustrated with reference to an accelerometer which transmits sensor identification data to associated data acquisition equipment when power is first applied by using the same two signal lines as are used to provide power to the sensor and to convey the sensor output signal to the equipment. After the identification data is transmitted, the apparatus operates as a buffer amplifier to modulate the transducer output signal onto the same two signal lines.

9. 发明公开

EP0347034A2 Improved sensor 失效
标题翻译： Messfühler。
公开(公告)号：EP0347034A2
公开(公告)日：1989-12-20
申请号：EP89304231.7
申请日：1989-04-27
申请人： Hewlett-Packard Company
发明人： Gilbert, Robert A. , Hilton, Howard E. , Rasmussen, David E. , Panek, Charles R. , Danielson, Dan D.
IPC分类号： G08C19/02
CPC分类号： G08C19/02
摘要： A sensor is disclosed which exchanges with associated data acquisition equipment a digital attribute signal, distinct from its transducer output signal, on the occurrence of a predetermined event. The invention is particularly illustrated with reference to an accelerometer which transmits sensor identification data to associated data acquisition equipment when power is first applied by using the same two signal lines as are used to provide power to the sensor and to convey the sensor output signal to the equipment. After the identification data is transmitted, the apparatus operates as a buffer amplifier to modulate the transducer output signal onto the same two signal lines.
摘要翻译：公开了一种传感器，其在相关数据采集设备与预定事件发生时与其换能器输出信号不同的数字属性信号进行交换。参考加速度计具体说明本发明，该加速度计将传感器识别数据传送到相关联的数据采集设备，当通过使用与用于为传感器提供电力相同的两条信号线并且将传感器输出信号传送到设备。在发送识别数据之后，装置作为缓冲放大器工作，以将换能器输出信号调制到相同的两根信号线上。

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