| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Electronic circuit | JP10082681 | 1981-06-29 | JPS5742876A | 1982-03-10 | OKANO YASUNOBU |
| PURPOSE:To generate a pulse signal with prescribed pulse width by a small number of constituent elements by providing a frequency dividing circuit wherein frequency dividing stages dividing the frequency of the output of an oscillation source are cascaded. CONSTITUTION:An input from an oscillator 1 is connected via an inverter 2 to the initial stage B1 of a frequency dividing circuit 3 wherein frequency dividing stages B1-Bn dividing the frequency of the input by two are cascaded and also supplied to the frequency dividing stage B1 through an inverter 4. Then, connecting input terminals 13a and 13b of an output circuit 9 to the output of a prescribed frequency dividing stage obtain a pulse signal having a prescribed frequency. Further, the pulse width of the output pulse signal is reduced by a latch circuit 15. A pulse output appearing at the output terminal 21 of the latch circuit 15 is supplied to the input terminal 13a of the output circuit 9, and the Q output of the frequency dividing stage B5 is supplied to the input terminal 13b. Consequently, a pulse signal with prescribed pulse width appears at the output of an NOR circuit 10. This constitution generates the pulse signal having the prescribed pulse width by a small number of constituent elements. | ||||||
| 102 | Clock supplying system | JP671180 | 1980-01-22 | JPS56103386A | 1981-08-18 | SHIYUUTOU SEIJI |
| PURPOSE:To enable one unit of clock system to be changed over to other clock system immediately when the former goes out of order by doubling the clock systems, supplying clocks simultaneously and concentrically and mutually monitoring these. CONSTITUTION:Normally, the clock CL is supplied to a system from the 1st clock system 13. When a trouble occurs in the oscillation circuit 1 in the 1st clock system 13 or in the associated parts such as a frequency dividing circuit 2 and AND circuit 7, this is detected with the 2nd monitoring circuit 4 or the 1st monitoring circuit 3, and the automatic selecting circuit 5 and the 1st AND circuit 7 in the 2nd clock system 14 are operated, so that the clock CL is supplied from the 2nd clock system 14 to the system and at the same time an alarm signal ANN is emitted from a timer 6. Further when the 2nd clock system 12 goes out of order as well, the supply of the clock to the system is stopped and the alarm signal ANN is emitted from a timer 16. | ||||||
| 103 | JPS512264B1 - | JP6503570 | 1970-07-27 | JPS512264B1 | 1976-01-24 | |
| 104 | JPS4816018B1 - | JP4814670 | 1970-06-05 | JPS4816018B1 | 1973-05-18 | |
| 105 | ATOMIC CLOCK BASED ON AN OPTO-ELECTRONIC OSCILLATOR | EP03721605.8 | 2003-04-09 | EP1493212B1 | 2009-10-14 | MALEKI, Lutfollah; YU, Nan |
| Opto-electronic oscillators (100) having frequency locking mechanism to stabilize the oscillation frequency of the oscillators to an atomic frequency reference (130). Whispering gallery mode optical resonators may be used in such oscillators to form compact atomic clocks. | ||||||
| 106 | ADJUSTABLE COUNT DOWN TIMER | EP06790117 | 2006-08-31 | EP1922592A4 | 2009-09-23 | PARKINSON PAMELA |
| 107 | CALIBRATED REAL TIME CLOCK FOR ACQUISITION OF GPS SIGNALS DURING LOW POWER OPERATION | EP02776367.1 | 2002-10-30 | EP1451605B1 | 2008-12-10 | GRONEMEYER, Steven, A. |
| Power is conserved in a Global Positioning System (GPS) receiver by shutting down selected components during periods when the GPS receiver is not actively calculating the GPS receiver location. A low power time keeping circuit accurately preserves GPS time when the selected components are deactivated. When the selected components are turned on in response to a wake-up command, time provided from the low power time keeping circuit, corrected for actual operating temperatures, and data from the GPS clock temperature/frequency table, are used to recalibrate time from a GPS oscillator. Positions of the GPS satellites are then estimated such that the real GPS time is quickly determined from the received satellite signals. Once real GPS time is determined from the detected satellite signals, the selected components are deactivated. The process described above is repeated such that accurate GPS time is maintained by the low power time keeping circuit. | ||||||
| 108 | CALIBRATED REAL TIME CLOCK FOR ACQUISITION OF GPS SIGNALS DURING LOW POWER OPERATION | EP02776367.1 | 2002-10-30 | EP1451605A2 | 2004-09-01 | GRONEMEYER, Steven, A. |
| Power is conserved in a Global Positioning System (GPS) receiver by shutting down selected components during periods when the GPS receiver is not actively calculating the GPS receiver location. A low power time keeping circuit accurately preserves GPS time when the selected components are deactivated. When the selected components are turned on in response to a wake-up command, time provided from the low power time keeping circuit, corrected for actual operating temperatures, and data from the GPS clock temperature/frequency table, are used to recalibrate time from a GPS oscillator. Positions of the GPS satellites are then estimated such that the real GPS time is quickly determined from the received satellite signals. Once real GPS time is determined from the detected satellite signals, the selected components are deactivated. The process described above is repeated such that accurate GPS time is maintained by the low power time keeping circuit. | ||||||
| 109 | HYDROGEN SYNC | EP97932170.0 | 1997-06-20 | EP0906592B1 | 2001-11-28 | LANGLET, Carl, E., J.; NOREN, Nils, Bertil |
| A method and apparatus for compensating for the long term drift of an oscillator. Signals from hydrogen clouds are received and processed to generate an adjustment signal, which is used to adjust the frequency of the oscillator. The adjustment signal is derived from a frequency spectrum midpoint estimated from the signal strength of the received signals. | ||||||
| 110 | HYDROGEN SYNC | EP97932170.0 | 1997-06-20 | EP0906592A1 | 1999-04-07 | LANGLET, Carl, E., J.; NOREN, Nils, Bertil |
| A method and apparatus for compensating for the long term drift of an oscillator. Signals from hydrogen clouds are received and processed to generate an adjustment signal, which is used to adjust the frequency of the oscillator. The adjustment signal is derived from a frequency spectrum midpoint estimated from the signal strength of the received signals. | ||||||
| 111 | Time scale computation system including complete and weighted ensemble definition | EP91109359.9 | 1991-06-07 | EP0461557B1 | 1997-12-03 | Stein, Samuel R. |
| 112 | Microprocesseur sans temporisateur pour la fourniture de signaux de base de temps | EP94400653.5 | 1994-03-28 | EP0621525A1 | 1994-10-26 | Delaporte, Francis |
Microprocesseur sans temporisateur, piloté par une horloge de période déterminée, agencé pour exécuter des instructions d'application (6), chacune d'un nombre déterminé de périodes d'horloge (8), sous la commande d'un logiciel d'exécution (20) d'un nombre déterminé et maximal d'instructions et défini pour se boucler sur lui-même et se dérouler ainsi continûment au cours de périodes de logiciel, le microprocesseur comprenant des moyens de comptage (3,13) des périodes de logiciel pour délivrer des signaux de base de temps (14). Application à la commande d'afficheurs horaires |
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| 113 | Time scale computation system including complete and weighted ensemble definition | EP91109359.9 | 1991-06-07 | EP0461557A3 | 1994-02-23 | Stein, Samuel R. |
An improved system for providing ensemble time from an ensemble of oscillators is provided. In the system, a more complete ensemble definition permits a more accurate ensemble time to be calculated. The system takes into account at least weighted time and weighted frequency aspects or weighted time and weighted frequency aging aspects of each oscillator in the ensemble. Preferably, the system takes into account all of the weighted time aspects, weighted frequency aspect, and weighted frequency aging aspects for each oscillator in the ensemble. The weights with respect to each clock can be chosen to be either zero or any positive value such that the sum of the weights for each aspect sum to one. The system can be implemented using a Kalman approach. |
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| 114 | Continuous time interpolator | EP92307364.7 | 1992-08-12 | EP0529875A3 | 1993-12-01 | Stephenson, Paul |
A digital time interpolation system and method for quantizing the time-difference between two digital signals. The present invention measures the time-difference between consecutive zero crossings of a user signal and a reference oscillator (316). The present invention outputs interpolator data, which represents this time-difference in digital form. The present invention includes a quadrature hybrid (305), a synchronizer (304), track-and-holds (T&Hs) (306), analog-to-digital converters (ADC) (308), an encoding circuit (312), and a boundary detector (310). The present invention also includes a system for deskewing the recorded coarse time count and the fine time value. According to the present invention, the reference oscillator (316) is a continuous, two-phase signal having a unique pair of output values at any given instant of its period. By using this reference oscillator (316), the present invention accelerates conversion. The present invention uses a novel boundary detection scheme. By using this boundary detection scheme, the present invention avoids the timing errors which are traditionally introduced by measuring synchronizer outputs directly. |
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| 115 | Equivalent time pseudorandom sampling system | EP86308662.5 | 1986-11-06 | EP0244537B1 | 1992-12-23 | Agoston, Agoston |
| 116 | Time scale computation system including complete and weighted ensemble definition | EP91109359.9 | 1991-06-07 | EP0461557A2 | 1991-12-18 | Stein, Samuel R. |
An improved system for providing ensemble time from an ensemble of oscillators is provided. In the system, a more complete ensemble definition permits a more accurate ensemble time to be calculated. The system takes into account at least weighted time and weighted frequency aspects or weighted time and weighted frequency aging aspects of each oscillator in the ensemble. Preferably, the system takes into account all of the weighted time aspects, weighted frequency aspect, and weighted frequency aging aspects for each oscillator in the ensemble. The weights with respect to each clock can be chosen to be either zero or any positive value such that the sum of the weights for each aspect sum to one. The system can be implemented using a Kalman approach. |
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| 117 | Time-to-digital converter using time residue feedback and related method | US15643465 | 2017-07-06 | US09904253B1 | 2018-02-27 | Terng-Yin Hsu; Chi-Hsu Chen; Jung-Chin Lai; Hsiang-Ming Yen |
| A method and apparatus for measuring an elapsed time from a starting signal to an ending signal in a time-to-digital converter. Primarily, the invention calculates an amount of complete cycles from the starting signal to a starting edge of a next clock cycle or the next Nth clock cycle (N is a natural number great than one) after the clock cycle corresponding to the ending signal. The amount is multiplied by a cycle time of the coarse clock to obtain a coarse time value. A time residue is calculated from the ending signal to the starting edge. Finally, the time residue is subtracted from the coarse time value to obtain a required time. | ||||||
| 118 | Independent fiber-optic reference apparatuses and methods thereof | US14532620 | 2014-11-04 | US09703266B2 | 2017-07-11 | David Sohn |
| A reference management apparatus includes a reference signal housing, a fixed length propagation device, an oscillator device, and a reference management computing device. The reference signal housing having a propagation signal output and a propagation signal input. The fixed length propagation device is coupled between the propagation signal output and the propagation signal input. The reference signal management computing device is coupled to the oscillator device and the propagation signal input. The reference signal management computing device also comprises at least one of configurable hardware logic configured to implement or a memory coupled to the processor which is configured to be capable of executing programmed instructions comprising and stored in the memory to: detect a start and an end of a transmission of at least one pulse signal through the fixed length propagation device; measure propagation time of the at least one pulse signal through the fixed length propagation device; and utilize the measured propagation time for managing a reference signal. | ||||||
| 119 | Random Light Collector Device | US15371947 | 2016-12-07 | US20170167913A1 | 2017-06-15 | Patrick Berthoud |
| Disclosed is a random light collector device including a reflecting cavity configured to enclose a random light source that randomly transmits photons. The reflecting cavity has an inner wall adapted to reflect at least a portion of the photons to an output port and guiding means for directing the photons to a photodetector. The guiding means is a hollow tube having an inner wall adapted to reflect the photons, wherein a first end of the hollow tube is connected to or positioned adjacent to the output port of the reflecting cavity and wherein the photodetector is provided within the hollow tube or at a second end such that a sensitive area of the photodetector covers the cross-section of the second end. | ||||||
| 120 | Systems and methods for providing a clock signal using analog recursion | US13597034 | 2012-08-28 | US08525562B1 | 2013-09-03 | John David Jones |
| Systems and methods for generating clock signals using analog recursion are provided. In some embodiments, an analog recursion system includes an analog recursion device and one or more recursion loops. The recursion loops interact to form periodic phenomena within the analog recursion device, which may be sampled to generate clock state. By tuning settings of the analog recursion device, the clock state generated by the analog recursion system may be tailored for a variety of purposes. | ||||||
