| 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 | Frequency discriminator | JP5768182 | 1982-04-05 | JPS58173471A | 1983-10-12 | ABE NORIO |
| PURPOSE: To cause no malfunction for any frequency, by providing a two state storing means whose storing state is switched complementarily in accordance with the outputs of the first and the second frequency discriminating means. CONSTITUTION: A titled device is provided with a two state storing means whose storing state is switched complementarily in accordance with the first frequency discriminating means output and the second frequency discriminating means output. At the time of reception of 50Hz, a -Q output of an FF8 sometimes causes a malfunction and becomes a high level. Also, at the time of reception of 60Hz, a -Q output of an FF81 sometimes causes a malfunction and becomes a high level. Even is case when a malfunction occurs in this way, however, an exact discriminating signal 9 is obtained from an RS-FF13. In this regard, in case when a noise is mixed at the time of receiving a 50Hz signal, sometime an output of the FF81 also executes a malfunction, but unless it coincides with a malfunction of the FF8, no malfunction output appears in the final discriminating output 9. In this way, it is possible to scarcely cause a malfunction even in case of any frequency. COPYRIGHT: (C)1983,JPO&Japio | ||||||
| 102 | Measuring instrument for frequency difference | JP8508080 | 1980-06-25 | JPS5712371A | 1982-01-22 | MIYAWAKI KUNIO |
| PURPOSE:To measure a frequency difference rapidly and accurately while facilitating calibration, by matching the matched signal frequency of an oscillator with a reference frequency by comparing the phases of both signals mutually. CONSTITUTION:Once a reference signal oscillator 2 is selected via a switch 4, a reference frequency signal for calibration is intermitted via a gate circuit 6 controlled by either an internal gate signal or external gate signal, and then applied to a phase comparator 13. The comparator 13, on the other hand, is applied with a matched frequency signal outputted by a voltage-controlled oscillator 16, or subordinate reference signal oscillator, controlled by a frequency varying device 17, thereby making a comparison between phases of both the signals. When the oscillator 16 is adjusted so that the output voltage of an LPF15 corresponding to the phase difference between both the signals is zero, both the signals are matched and the oscillator 16 is calibrated easily and accurately. Thus, the frequency difference of the detected frequency signal inputted from the switch 4 is measured rapidly and accurately by the output of the LPF15 based upon the phase comparison between the detected frequency signal and the subordinate reference signal from the oscillator 16. | ||||||
| 103 | JPS5619916B2 - | JP14172776 | 1976-11-25 | JPS5619916B2 | 1981-05-11 | |
| 104 | Ac voltage comparator circuit disposition | JP10182780 | 1980-07-23 | JPS5620311A | 1981-02-25 | MAIKERU JIEEMUZU ANDAAHIRU |
| 105 | Tuner | JP7364277 | 1977-06-21 | JPS548568A | 1979-01-22 | BABA MITSURU |
| PURPOSE: To provide the tuner of high accuracy and small size by comparing the pulse signal of the width corresponding to the frequency of the basic wave formed by extracting the basic wave of the tuned signal and the pulse signal of the width corresponding to a reference sound frequency. COPYRIGHT: (C)1979,JPO&Japio | ||||||
| 106 | JPS5226302B2 - | JP9071672 | 1972-09-09 | JPS5226302B2 | 1977-07-13 | |
| 107 | Frequency comparison circuit | JP14172776 | 1976-11-25 | JPS5265483A | 1977-05-30 | PIEERU ANIYU; ANRII BUTAN |
| 108 | Shingoshorisochi | JP1184276 | 1976-02-05 | JPS51102688A | 1976-09-10 | DEBITSUDO SHII CHUU |
| 109 | JPS5019320A - | JP5379274 | 1974-05-14 | JPS5019320A | 1975-02-28 | |
| 110 | Voltage detecting device and battery pack monitoring system | US15378271 | 2016-12-14 | US10094883B2 | 2018-10-09 | Shunya Yamamoto; Kazutaka Honda; Yukihiro Tomonaga; Ryotaro Miura |
| A voltage detecting device detects a differential voltage between two input nodes having a non-zero common mode voltage. A differential voltage detecting circuit 5 detects the differential voltage by sampling each voltage of the input nodes and outputs a detection voltage indicating a detection result. A leak canceling circuit generates a compensating current, which flows in opposition to a leak current flowing out from the input nodes in correspondence to an operation of the differential voltage detecting circuit. An operation control part controls the leak canceling circuit to perform or stop a canceling operation. A failure diagnosing part performs a failure diagnosis about the leak canceling circuit based on a first detection value and a second detection value of the detection voltages, which are detected during periods when the leak canceling circuit performs and stops the canceling operation. | ||||||
| 111 | Ballast type detecting circuit and light emitting diode lighting apparatus having the same | US14941074 | 2015-11-13 | US09781785B2 | 2017-10-03 | Seung Woo Hong |
| A ballast type detecting circuit includes a ballast signal clamping circuit coupled to a ballast, wherein the ballast signal clamping unit is configured to clamp an output of the ballast, and a ballast type detection circuit configured to compare first and second reference clocks and the clamped output of the ballast to determine a type of the ballast, each of the first and second reference clocks having a frequency lower than an output frequency of a first type ballast and higher than an output frequency of a second type ballast. Thus, the ballast type detecting circuit detects a type of electronic ballast and magnetic ballast based on a digital output signal and decreases a number of outside circuit elements through a ballast type detection based on a digital output signal. | ||||||
| 112 | RF PHASE OFFSET DETECTION CIRCUIT | US15431933 | 2017-02-14 | US20170279439A1 | 2017-09-28 | Christian Rye Iversen |
| An RF phase offset detection system, which includes a first RF phase detector and a second RF phase detector, and measures a first phase offset between a first RF signal and a second RF signal, is disclosed. Each of the first RF signal and the second RF signal has a common RF frequency. The first RF phase detector detects and filters the first RF signal and the second RF signal to provide a first detection signal. The second RF phase detector receives and phase-shifts the second RF signal to provide a phase-shifted RF signal. The second RF phase detector further detects and filters the first RF signal and the phase-shifted RF signal to provide a second detection signal, such that a combination of the first detection signal and the second detection signal is representative of the first phase offset. | ||||||
| 113 | Semiconductor device and measurement method | US14222114 | 2014-03-21 | US09606007B2 | 2017-03-28 | Yosuke Iwasa |
| The present invention provides a semiconductor device and a measurement method that enables high precision measurement of temperature or humidity or the like over a wide range. A semiconductor device of the present invention determines which is faster out of a reference oscillation and a thermistor oscillation, and using the faster oscillation as a reference, measures a count value based on the other oscillation. Moreover, the count based on the faster oscillation is employed as a reference value, and a count value based on the other oscillation when the reference value is taken as a measurement value. A frequency ratio is computed based on the reference value and the measurement value, and based on the computed frequency ratio, a table expressing correspondence relationships between frequency ratio and temperature is referred to and a temperature acquired. | ||||||
| 114 | Frequency judgment device, voltage comparator circuit, and frequency measurement device | US13499633 | 2010-09-30 | US09329214B2 | 2016-05-03 | Fujio Kurokawa |
| The frequency decision device determines frequency of the measured rectangular signal by simple and easy means. The frequency decision device inputs the measured rectangular signal that frequency (or period) changes dynamically. It generates a rectangular reference signal of predetermined on width τ synchronizing to the edge based on a positive going edge of this measured rectangle signal. And it watches the order of measured rectangle signal and falling edges of the rectangular reference signal. When this sequential order reversed, it detects that length of the ON time of ON time of the measured rectangle signal and the measured rectangular signal reversed. | ||||||
| 115 | Time Series Analytics | US14538999 | 2014-11-12 | US20150253366A1 | 2015-09-10 | Puneet Agarwal; Gautam Shroff; Rishabh Gupta |
| A method for identifying frequently occurring waveform patterns in time series comprises segmenting each of one or more time series into a plurality of subsequences. Further, a subsequence matrix comprising each of the plurality of subsequences is generated. Further, the subsequence matrix is processed to obtain a candidate subsequence matrix comprising a plurality of non-trivial subsequences. Further, the plurality of non-trivial subsequences is clustered into a plurality of spherical clusters of a predetermined diameter. Further, a plurality of sub-clusters for each of one or more spherical clusters is obtained based on a mean of each of the plurality of non-trivial subsequences present in the spherical cluster. Further, one or more frequent waveform clusters, depicting frequently occurring waveform patterns, are ascertained from amongst the one or more spherical clusters based on a number of non-trivial subsequences present in each of the plurality of sub-clusters of the spherical cluster. | ||||||
| 116 | SEMICONDUCTOR DEVICE AND MEASUREMENT METHOD | US14222114 | 2014-03-21 | US20140286472A1 | 2014-09-25 | Yosuke IWASA |
| The present invention provides a semiconductor device and a measurement method that enables high precision measurement of temperature or humidity or the like over a wide range. A semiconductor device of the present invention determines which is faster out of a reference oscillation and a thermistor oscillation, and using the faster oscillation as a reference, measures a count value based on the other oscillation. Moreover, the count based on the faster oscillation is employed as a reference value, and a count value based on the other oscillation when the reference value is taken as a measurement value. A frequency ratio is computed based on the reference value and the measurement value, and based on the computed frequency ratio, a table expressing correspondence relationships between frequency ratio and temperature is referred to and a temperature acquired. | ||||||
| 117 | FREQUENCY JUDGMENT DEVICE, VOLTAGE COMPARATOR CIRCUIT, AND FREQUENCY MEASUREMENT DEVICE | US13499633 | 2010-09-30 | US20120326751A1 | 2012-12-27 | Fujio Kurokawa |
| The frequency decision device determines frequency of the measured rectangular signal by simple and easy means. The frequency decision device inputs the measured rectangular signal that frequency (or period) changes dynamically. It generates a rectangular reference signal of predetermined on width τ synchronizing to the edge based on a positive going edge of this measured rectangle signal. And it watches the order of measured rectangle signal and falling edges of the rectangular reference signal. When this sequential order reversed, it detects that length of the ON time of ON time of the measured rectangle signal and the measured rectangular signal reversed. | ||||||
| 118 | Circuit and method for monitoring the status of a clock signal | US11097527 | 2005-03-31 | US07454645B2 | 2008-11-18 | Gabriel M. Li; Greg J. Richmond; Sangeeta Raman |
| A circuit and method are provided herein for monitoring the status of a clock signal. In general, the method may include supplying a pair of clock signals to a clock monitor circuit, which is configured for monitoring a status of one clock signal relative to the other. The status indicates whether the frequency of the one clock signal is faster, slower or substantially equal to the frequency of the other clock signal. Once determined, the status may be stored as a bit pattern within a status register, which is operatively coupled to the clock monitor circuit. This enables the status to be read by detecting a logic state of one or more bits within the status register. | ||||||
| 119 | FREQUENCY COMPARATOR, FREQUENCY SYNTHESIZER, AND RELATED METHODS THEREOF | US11566233 | 2006-12-03 | US20080122491A1 | 2008-05-29 | Chien-Wei Kuan |
| The present invention discloses a frequency comparator for comparing frequencies of a first signal and a second signal. The frequency comparator includes: a frequency detecting circuit for generating a reference signal according to the first signal and an input voltage; a frequency generator for generating the second signal according to the input voltage; a charge pump circuit for enabling a charging current according to either the reference signal or the second signal to increase an voltage level, and for enabling a discharging current according to the other signal to decrease the voltage level; and a decision logic coupled to the charge pump circuit for indicating a frequency relation between frequencies of the first signal and the second signal according to the voltage level. | ||||||
| 120 | Periodic electrical signal frequency monitoring systems and methods | US11024332 | 2004-12-22 | US07154305B2 | 2006-12-26 | Steve Driediger; Dion Pike |
| Systems and methods for monitoring frequencies of periodic electrical signals are disclosed. According to one technique, a first and second counters are respectively clocked by a first periodic electrical signal to be monitored and a second periodic electrical, and a threshold detector resets one of the counters when a count of the other counter crosses a reset threshold and determines whether a frequency error has occurred based on whether a count of the one of the counters crosses an alarm threshold. Another technique according to an embodiment of the invention also involves clocking counters with respective periodic electrical signals, although error detection is based on whether the counts of the counters cross respective associated thresholds in other than a particular sequence with respect to each other. | ||||||
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