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公开(公告)号：US20170146578A1
公开(公告)日：2017-05-25
申请号：US15139801
申请日：2016-04-27
Applicant: STMICROELECTRONICS SA
Inventor： Marc HOUDEBINE , Sebastien Dedieu
IPC: G01R23/10
CPC classification number: G01R23/10 , G01R23/02 , H03D13/001
Abstract: A method includes a) counting whole periods of a signal during a first period of a reference signal, b) repeating step a) for each period of the reference signal until a first duration is equal to a first quantity of periods of the reference signal, and c) determining a first average of the whole periods. The method also includes repeating at least one of steps a) to c) and at each repetition shifting a start of the counting of step a) by at least one period of the reference signal, and in steps b) and c) accounting for whole periods of the signal already counted during the at least one preceding group of steps a) and b). The method includes determining a second average of the first averages, and determining the frequency of the signal from the second average and the frequency of the reference signal.
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公开(公告)号：US09419634B1
公开(公告)日：2016-08-16
申请号：US14752226
申请日：2015-06-26
Inventor： Sebastien Dedieu , Abhirup Lahiri
CPC classification number: H03K3/0315 , H03K3/013 , H03L1/02 , H03L7/00 , H03L7/0805 , H03L7/24
Abstract: A multiple phase oscillator includes a master oscillator that injection locks a first ring oscillator. The free-running frequency of the first ring oscillator is adjustable through a control signal. A second ring oscillator has a same structure as the first ring oscillator and is connected to operate in a free-running mode. The free-running frequency of the second ring oscillator is adjustable through the control signal. A control loop senses the output of the second ring oscillator and adjusts the control signal so that the free-running frequency of the second ring oscillator matches a desired value.
Abstract translation: 多相振荡器包括一个主振荡器，该主振荡器注入锁定第一个环形振荡器。 第一个环形振荡器的自由运行频率可通过控制信号进行调节。 第二环形振荡器具有与第一环形振荡器相同的结构，并连接以工作在自由运行模式。 第二个环形振荡器的自由运行频率可以通过控制信号进行调节。 控制回路感测第二环形振荡器的输出并调整控制信号，使得第二环形振荡器的自由运行频率与期望值相匹配。
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公开(公告)号：US10823771B2
公开(公告)日：2020-11-03
申请号：US16280190
申请日：2019-02-20
Applicant: STMicroelectronics SA
Inventor： Marc Houdebine , Sebastien Dedieu
Abstract: A method includes a) counting whole periods of a signal during a first period of a reference signal, b) repeating step a) for each period of the reference signal until a first duration is equal to a first quantity of periods of the reference signal, and c) determining a first average of the whole periods. The method also includes repeating at least one of steps a) to c) and at each repetition shifting a start of the counting of step a) by at least one period of the reference signal, and in steps b) and c) accounting for whole periods of the signal already counted during the at least one preceding group of steps a) and b). The method includes determining a second average of the first averages, and determining the frequency of the signal from the second average and the frequency of the reference signal.
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公开(公告)号：US20190178922A1
公开(公告)日：2019-06-13
申请号：US16280190
申请日：2019-02-20
Applicant: STMicroelectronics SA
Inventor： Marc Houdebine , Sebastien Dedieu
Abstract: A method includes a) counting whole periods of a signal during a first period of a reference signal, b) repeating step a) for each period of the reference signal until a first duration is equal to a first quantity of periods of the reference signal, and c) determining a first average of the whole periods. The method also includes repeating at least one of steps a) to c) and at each repetition shifting a start of the counting of step a) by at least one period of the reference signal, and in steps b) and c) accounting for whole periods of the signal already counted during the at least one preceding group of steps a) and b). The method includes determining a second average of the first averages, and determining the frequency of the signal from the second average and the frequency of the reference signal.
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Patent Agency Ranking
公开(公告)号：US10261117B2
公开(公告)日：2019-04-16
申请号：US15139801
申请日：2016-04-27
Applicant: STMICROELECTRONICS SA
Inventor： Marc Houdebine , Sebastien Dedieu
Abstract: A method includes a) counting whole periods of a signal during a first period of a reference signal, b) repeating step a) for each period of the reference signal until a first duration is equal to a first quantity of periods of the reference signal, and c) determining a first average of the whole periods. The method also includes repeating at least one of steps a) to c) and at each repetition shifting a start of the counting of step a) by at least one period of the reference signal, and in steps b) and c) accounting for whole periods of the signal already counted during the at least one preceding group of steps a) and b). The method includes determining a second average of the first averages, and determining the frequency of the signal from the second average and the frequency of the reference signal.
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6.发明授权公开(公告)号：US10135451B2
公开(公告)日：2018-11-20
申请号：US15800302
申请日：2017-11-01
Applicant: STMicroelectronics SA
Inventor： Marc Houdebine , Sebastien Dedieu
Abstract: In some embodiments, a phase locked loop includes a voltage-controlled oscillator whose output is fed back to a first input of a phase comparator via a fractional divider controlled by a delta-sigma modulator. The method of doubling the frequency of the initial reference signal of the phase locked loop involves generating, from the initial reference signal and the output signal furnished by the voltage-controlled oscillator, a secondary reference signal having edges of a first type synchronized with each of the rising and falling edges of the initial reference signal and edges of a second type between the edges of the first type, and a furnishing of the secondary reference signal at a second input of the phase comparator operating on the edges of the first type.
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7.发明申请公开(公告)号：US20180269886A1
公开(公告)日：2018-09-20
申请号：US15800302
申请日：2017-11-01
Applicant: STMicroelectronics SA
Inventor： Marc Houdebine , Sebastien Dedieu
CPC classification number: H03L7/1974 , H03K5/00006 , H03L7/0891 , H03L7/1976 , H03L2207/10 , H04L7/0331
Abstract: In some embodiments, a phase locked loop includes a voltage-controlled oscillator whose output is fed back to a first input of a phase comparator via a fractional divider controlled by a delta-sigma modulator. The method of doubling the frequency of the initial reference signal of the phase locked loop involves generating, from the initial reference signal and the output signal furnished by the voltage-controlled oscillator, a secondary reference signal having edges of a first type synchronized with each of the rising and falling edges of the initial reference signal and edges of a second type between the edges of the first type, and a furnishing of the secondary reference signal at a second input of the phase comparator operating on the edges of the first type.
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8.发明授权公开(公告)号：US09998178B2
公开(公告)日：2018-06-12
申请号：US15436826
申请日：2017-02-19
Applicant: STMicroelectronics SA
Inventor： Sebastien Dedieu , Marc Houdebine
CPC classification number: H04B5/0031 , G06K7/10297 , H03L7/08 , H03L7/081 , H03L7/093 , H03L7/099 , H03L7/14 , H03L7/23 , H04B5/0056 , H04B5/0062 , H04B5/0093 , H04W4/80
Abstract: A method can be used for contactless communication of an object with a reader using active load modulation. A main clock signal is generated within the object. The generating includes a calibration phase and a transmission phase. The calibration phase includes locking an output signal of a controlled main oscillator onto a phase and frequency of a secondary clock signal received from the reader and estimating a frequency ratio between a frequency of the output signal of the main oscillator and a reference frequency of a reference signal originating from a reference oscillator. The transmission phase includes only frequency-locking the output signal of the main oscillator onto the frequency of the reference signal corrected by the estimated frequency ratio.
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9.发明申请公开(公告)号：US20180034505A1
公开(公告)日：2018-02-01
申请号：US15436826
申请日：2017-02-19
Applicant: STMicroelectronics SA
Inventor： Sebastien Dedieu , Marc Houdebine
CPC classification number: H04B5/0031 , G06K7/10297 , H03L7/08 , H03L7/081 , H03L7/093 , H03L7/099 , H03L7/14 , H03L7/23 , H04B5/0056 , H04B5/0062 , H04B5/0093 , H04W4/80
Abstract: A method can be used for contactless communication of an object with a reader using active load modulation. A main clock signal is generated within the object. The generating includes a calibration phase and a transmission phase. The calibration phase includes locking an output signal of a controlled main oscillator onto a phase and frequency of a secondary clock signal received from the reader and estimating a frequency ratio between a frequency of the output signal of the main oscillator and a reference frequency of a reference signal originating from a reference oscillator. The transmission phase includes only frequency-locking the output signal of the main oscillator onto the frequency of the reference signal corrected by the estimated frequency ratio.
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