专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US6081569A Method and apparatus for determining the change in frequency of a reference signal 失效
标题翻译：用于确定参考信号的频率变化的方法和装置
公开(公告)号：US6081569A
公开(公告)日：2000-06-27
申请号：US613434
申请日：1996-02-29
申请人： Gary D. Hanson , Ioan V. Teodorescu
发明人： Gary D. Hanson , Ioan V. Teodorescu
IPC分类号： G01R23/10 , H03D13/00 , H03L7/07 , H04J3/06 , H04L7/04
CPC分类号： H03D13/002 , G01R23/10 , H03L7/07 , H04J3/0685
摘要： A method for determining the change in frequency of a clock signal (168). The method includes the step of counting the number of clock signal cycles (168) that occur over at least two time windows (162, 164). The number of clock signal cycles counted in the first time window (162) is compared to the number of clock signal cycles counted in the second time window (164).
摘要翻译：一种用于确定时钟信号（168）的频率变化的方法。该方法包括对在至少两个时间窗口（162,164）上发生的时钟信号周期（168）的数目进行计数的步骤。将在第一时间窗口（162）中计数的时钟信号周期的数量与在第二时间窗口中计数的时钟信号周期数（164）进行比较。

22. 发明授权

US5973523A Time counting circuit, sampling circuit, skew adjusting circuit, and logic analyzing circuit 失效
标题翻译：时间计数电路，采样电路，偏斜调整电路和逻辑分析电路
公开(公告)号：US5973523A
公开(公告)日：1999-10-26
申请号：US99456
申请日：1998-06-18
申请人： Keiichi Kusumoto , Akira Matsuzawa
发明人： Keiichi Kusumoto , Akira Matsuzawa
IPC分类号： G01R23/10 , G01R29/02 , G06F1/10 , G06F11/25 , H03K23/00 , H03K23/54 , H03M1/50 , H03M1/64 , H03L7/00
CPC分类号： G04F10/005 , G01R29/02 , G06F1/10 , G06F11/25
摘要： There is provided a time counting circuit which measures a pulse spacing of a pulse signal with a high accuracy and exhibits high resistance to variations in power-source voltage.A delay circuit ring consists of a plurality of delay circuits connected in a ring configuration and signal transition is caused to circulate around the delay circuit ring by oscillation. A switch-signal generating circuit outputs first and second switch signals based on the time at which a pulse signal to be measured rises. A row of sampling circuits consists of a plurality of sampling circuits connected to the output terminals of the respective delay circuits and samples the output signals from the delay circuits in response to a direction indicated by the first switch signal. A row of holding circuits consists of a plurality of holding circuits connected to the output terminals of the respective sampling circuits and holds the output signals from the sampling circuits in response to a direction indicated by the second switch signal. An operating circuit calculates the pulse spacing of the pulse signal to be measured based on a logic level signal outputted from the row of holding circuits.
摘要翻译：提供了一种时间计数电路，其高精度地测量脉冲信号的脉冲间隔，并且对电源电压的变化表现出高的抵抗能力。延迟电路环由以环形配置连接的多个延迟电路组成，并且使信号转变通过振荡在延迟电路环周围循环。开关信号发生电路基于要测量的脉冲信号上升的时间输出第一和第二开关信号。一行采样电路由连接到各个延迟电路的输出端的多个采样电路组成，并响应于第一开关信号指示的方向对来自延迟电路的输出信号进行采样。一行保持电路由多个保持电路组成，多个保持电路连接到相应采样电路的输出端，并响应于第二开关信号指示的方向保持来自采样电路的输出信号。操作电路基于从保持电路行输出的逻辑电平信号来计算要测量的脉冲信号的脉冲间隔。

23. 发明授权

US5915108A Method of measurement and compensation of an inaccurate clock signal 失效
标题翻译：不准确的时钟信号的测量和补偿方法
公开(公告)号：US5915108A
公开(公告)日：1999-06-22
申请号：US885408
申请日：1997-06-30
申请人： Michael James Frey , R. Brooks Reed , Charles Stuart Tosch
发明人： Michael James Frey , R. Brooks Reed , Charles Stuart Tosch
IPC分类号： G01R23/10 , F02P7/077 , G04G3/02 , G06F1/10 , G06F1/04
CPC分类号： G04G3/02 , F02P7/0775
摘要： A method for determining the actual frequency of an inaccurate clock signal then using the actual frequency to generate a compensation factor to correct calculations using the clock signal. The method includes counting the number of clock pulses in the clock signal over a predetermined and programmable period of time, and based on the clock pulse count, determining the actual frequency of the clock signal. Once the actual frequency of the clock signal is determined, this value is used to generate the compensation factor based on the expected or rated frequency of the clock signal to compensate for the calculations using the clock signal. The method has a particular application for use in a powertrain control module incorporating a low frequency resonator and a high frequency system clock, where the resonator generates an inaccurate clock signal which is highly stable for short periods of time and the system clock is relatively stable over long term but suffers from short term jitter.
摘要翻译：一种用于确定不准确时钟信号的实际频率的方法，然后使用实际频率来产生补偿因子以使用时钟信号来校正计算。该方法包括在预定和可编程的时间段内对时钟信号中的时钟脉冲数进行计数，并且基于时钟脉冲计数，确定时钟信号的实际频率。一旦确定了时钟信号的实际频率，则该值用于根据时钟信号的预期或额定频率产生补偿因子，以补偿使用时钟信号的计算。该方法具有用于包含低频谐振器和高频系统时钟的动力系控制模块中的特定应用，其中谐振器产生在短时间内高度稳定的不准确的时钟信号，并且系统时钟相对稳定长期但遭受短期抖动。

24. 发明授权

US5764045A Frequency measuring apparatus 失效
标题翻译：频率测量仪
公开(公告)号：US5764045A
公开(公告)日：1998-06-09
申请号：US705154
申请日：1996-08-29
申请人： Mishio Hayashi
发明人： Mishio Hayashi
IPC分类号： G01R23/10 , G01R23/02
CPC分类号： G01R23/10
摘要： A fractional time frequency measuring apparatus includes a divider for dividing a frequency of a signal to be measured with a predetermined division factor; a counter unit for counting the divided signal with a standard clock for every period of the divided signal and outputting count results; a fractional time measuring unit for measuring fractional times produced by the counting with the standard clock; a sequence control unit to form a sequence circuit for sequentially counting the divided signal with the standard clock; a memory unit for holding the count results from the counter unit; a microprocessor for determining a value of the divisional factor, generating a reset signal, and calculating the frequency of the signal to be measured from the count results stored in the memory unit. The sequence control unit counts a predetermined number of pulses of the standard clock while it generates a write signal of count results in the memory unit, a reset signal for the counter unit, and an address signal for the memory unit; and the counter unit is preset at a value equal to the predetermined number of pulses.
摘要翻译：分数时间频率测量装置包括用于以预定的分频因子分频待测信号的频率的分频器; 计数器单元，用于对分割信号的每个周期的标准时钟进行计数，并输出计数结果; 分数时间测量单元，用于测量用标准时钟计数产生的分数时间; 序列控制单元，用于形成用于以标准时钟顺序计数分频信号的序列电路; 存储单元，用于保持来自计数器单元的计数结果; 用于确定分割因子的值的微处理器，产生复位信号，以及从存储在存储器单元中的计数结果计算要测量的信号的频率。顺序控制单元计数标准时钟的预定数量的脉冲，同时产生存储单元中的计数结果写入信号，计数器单元的复位信号和存储单元的地址信号; 并且计数器单元预设为等于预定脉冲数的值。

25. 发明授权

US5719782A Frequency measuring apparatus and frequency measuring method 失效
标题翻译：频率测量仪和频率测量方法
公开(公告)号：US5719782A
公开(公告)日：1998-02-17
申请号：US481266
申请日：1995-06-07
申请人： Teruyoshi Mitsuoka
发明人： Teruyoshi Mitsuoka
IPC分类号： G01R23/10 , H03B5/32 , H03L1/00
CPC分类号： G01R23/10
摘要： A frequency measuring apparatus for measuring the frequency of an input signal to be measured with high accuracy. The apparatus includes a crystal oscillator for generating an internal reference frequency, a temperature sensor provided on the crystal oscillator, a writable memory and an estimation control device for storing in the memory a correspondence relationship between an absolute frequency to be taken as a reference at a predetermined temperature measured by the temperature sensor and the internal reference frequency as error correction information and estimating the frequency ortho input signal in conformity with the internal reference frequency corrected by the error correction information upon the input signal.
摘要翻译： PCT No.PCT / JP94 / 01758 Sec。 371日期：1995年6月7日 102（e）日期1995年6月7日PCT 1994年10月19日PCT PCT。出版物WO95 / 11456 日期1995年04月27日一种用于以高精度测量要测量的输入信号的频率的频率测量装置。该装置包括用于产生内部参考频率的晶体振荡器，设置在晶体振荡器上的温度传感器，可写入存储器和估计控制装置，用于在存储器中存储作为参考的绝对频率之间的对应关系由温度传感器测量的预定温度和内部参考频率作为误差校正信息，并根据输入信号通过纠错信息校正的内部基准频率估计频率邻近输入信号。

26. 发明授权

US5710710A Frequency counter with reduced false correlations 失效
标题翻译：频率计数器减少虚假相关性
公开(公告)号：US5710710A
公开(公告)日：1998-01-20
申请号：US561692
申请日：1995-11-22
申请人： William P. Owen , Judd Sheets
发明人： William P. Owen , Judd Sheets
IPC分类号： G01R23/02 , G01R23/10 , G01R23/00 , G06F17/00
CPC分类号： G01R23/10 , G01R23/02
摘要： An improved frequency counter for more reliably reading the frequency of low level signals by employing a method of separating the desired signal from undesirable noise related signals, wherein the frequency counter comprises signal input amplifier circuitry, a frequency modulator circuit for phase shifting the self-oscillation frequency of the undesired signal to isolate it from the valid signal, a prescaler circuit, a frequency or pulse counter driven by the output of the prescaler, and a correlator circuit for differentiating the self-oscillation frequencies from the main signal frequency so as to reduce false correlations between the self-oscillation, or noise, and valid signals.
摘要翻译：一种改进的频率计数器，用于通过采用将期望信号与不期望的噪声相关信号分离的方法更可靠地读取低电平信号的频率，其中频率计数器包括信号输入放大器电路，用于相位自振荡的频率调制器电路不需要的信号的频率使其与有效信号隔离，预分频器电路，由预分频器的输出驱动的频率或脉冲计数器，以及用于将自振荡频率与主信号频率区分开来的相关器电路，以便减少自振荡或噪声与有效信号之间的假相关。

27. 发明授权

US5487097A Period measuring device 失效
标题翻译：周期测量装置
公开(公告)号：US5487097A
公开(公告)日：1996-01-23
申请号：US291285
申请日：1994-08-16
申请人： Makoto Hatakenaka , Haruo Sakurai , Hideo Nagano
发明人： Makoto Hatakenaka , Haruo Sakurai , Hideo Nagano
IPC分类号： G01R23/00 , G01R23/10 , H03K21/00
CPC分类号： G01R23/005 , G01R23/10
摘要： It is an object to accurately obtain the period of the horizontal synchronizing signal in the video signal. The number of internal pulses are measured in a predetermined measurement period defined by the horizontal synchronizing signal. It is assumed that the periods of the horizontal synchronizing signal and the internal pulse are denoted as T.sub.H and T.sub.S, and the measurement period is defined by one period of a divided signal NS which is obtained by N-dividing the horizontal synchronizing signal. In this case, the length of the measurement period is N.multidot.T.sub.H. The period of the horizontal synchronizing signal is obtained when the internal pulse is activated K times in the measurement period. After the measurement period is started, the divided signal NS transits between the Kth activation of the internal pulse and the (K+1)th activation, and the measurement period is ended. Accordingly, there is the relation of T.sub.S .multidot.K
摘要翻译：其目的在于准确地获得视频信号中的水平同步信号的周期。在由水平同步信号定义的预定测量周期内测量内部脉冲的数量。假设水平同步信号和内部脉冲的周期被表示为TH和TS，并且测量周期由通过N分割水平同步信号获得的分频信号NS的一个周期来定义。在这种情况下，测量周期的长度为N×TH。在测量周期内内部脉冲激活K次时，获得水平同步信号的周期。在测量周期开始之后，分频信号NS在内部脉冲的第K次激活和第（K + 1）激活之间转换，并且测量周期结束。因此，存在TSxK

28. 发明授权

US5463310A Instrument for measuring the frequency and power of a microwave signal 失效
标题翻译：用于测量微波信号频率和功率的仪器
公开(公告)号：US5463310A
公开(公告)日：1995-10-31
申请号：US333359
申请日：1994-11-02
申请人： Timothy J. Pegg , George Hjipieris , Andrew G. Bullock
发明人： Timothy J. Pegg , George Hjipieris , Andrew G. Bullock
IPC分类号： G01R21/01 , F16L59/00 , G01R23/02 , G01R23/04 , G01R23/10
CPC分类号： G01R23/04 , F16L59/00
摘要： An instrument which provides a measurement of the frequency and power of a microwave signal supplied to an input port of the instrument. The instrument includes: a resistive device which divides the microwave signal supplied into first and second microwave divisions thereof; a frequency counter which measures the frequency of the first microwave division, thereby providing the measurement of the frequency of the microwave signal supplied; and a power sensor and power meter combination which measures the power of the second microwave division. The power sensor and meter combination makes a calibration correction dependent on the frequency measured by the frequency counter to its power measurement, thereby providing the measurement of the power of the microwave signal supplied.
摘要翻译：提供对提供给仪器的输入端口的微波信号的频率和功率的测量的仪器。该仪器包括：电阻装置，其将提供的微波信号分成第一和第二微波分段; 频率计数器，其测量第一微波分频的频率，由此提供所提供的微波信号的频率的测量值; 以及测量第二微波分区的功率的功率传感器和功率计组合。功率传感器和仪表组合根据其功率测量的频率计数器测量的频率进行校准校正，从而提供所提供的微波信号功率的测量。

29. 发明授权

US5388053A Data processing method for obtaining data indicating pulse period 失效
标题翻译：用于获取表示脉冲周期的数据的数据处理方法
公开(公告)号：US5388053A
公开(公告)日：1995-02-07
申请号：US264248
申请日：1994-06-22
申请人： Kazumasa Kurihara , Tsutomu Takahashi
发明人： Kazumasa Kurihara , Tsutomu Takahashi
IPC分类号： G01P3/481 , G01D5/244 , G01P3/489 , G01R23/02 , G01R23/10 , G01R29/02
CPC分类号： G01D5/24476 , G01R23/02
摘要： A data processing method for obtaining data indicating the period between pulses comprises measuring the interval between the subject pulses, separately generating time pulses of a prescribed period, measuring the time between the most recent subject pulse and the most recent time pulse, outputting the interval between the subject pulses as the pulse period data if it is longer than the time between the most recent subject pulse and the most recent time pulse and otherwise outputting the latter time as the pulse period data. The data obtained in this way more precisely indicates the actual pulse period in cases where noise pulses occur between subject pulses.
摘要翻译：一种数据处理方法，用于获得指示脉冲之间的周期的数据包括测量目标脉冲之间的间隔，分别产生规定周期的时间脉冲，测量最近的被摄体脉冲与最近的时间脉冲之间的时间，如果该脉冲周期数据比最近的被摄体脉冲和最近的时间脉冲之间的时间长，则将被摄体脉冲作为脉冲周期数据，否则输出后一时间作为脉冲周期数据。以这种方式获得的数据更精确地表示在主体脉冲之间出现噪声脉冲的情况下的实际脉冲周期。

30. 发明授权

US5163164A Microprocessor controlled digital AFT unit 失效
标题翻译：微处理器控制的数字单位
公开(公告)号：US5163164A
公开(公告)日：1992-11-10
申请号：US635829
申请日：1990-12-31
申请人： Juri Tults
发明人： Juri Tults
IPC分类号： G01R23/10 , H03J1/00 , H03J7/06 , H04N17/04
CPC分类号： H03J1/005 , H03J7/065
摘要： A tuning system of a television receiver includes a digital automatic fine tuning (AFT) unit for generating a digital AFT signal representing the deviation of the frequency of the picture carrier of the IF signal from a nominal frequency value. The digital AFT unit includes a counter for counting cycles of picture carrier during counting intervals. A portion of the IF section, the counter and at least of a portion of the signal processing section of the television receiver are included within a single integrated circuit. A microprocessor is coupled to the integrated circuit through a serial data bus. Under software program control, the microprocessor (1) transmits function control and counting control information to the signal processing section through the serial data bus, (2) receives count information from the counter through the serial data bus, and (3) evaluates count information to determine the deviation of the frequency of the IF picture carrier from its nominal frequency value.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式