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公开(公告)号：US11693089B2
公开(公告)日：2023-07-04
申请号：US17558502
申请日：2021-12-21
Applicant: MEDIATEK INC.
Inventor： Tzu-Chin Lin , Chih-Ming Hung , Jui-Lin Hsu , Chao-Ching Hung , Bao-Chi Peng
CPC classification number: G01S7/4021 , G01S7/4008 , G01S7/4056 , G01S13/0209 , G01S13/88 , H03J7/04 , H03J7/065 , H03L7/183 , H04B17/21
Abstract: A system includes a local oscillator (LO) signal generation circuit, a receiver (RX) circuit, and a calibration circuit. The LO signal generation circuit generates an LO signal according to a reference clock, and includes an active oscillator that generates the reference clock. The active oscillator includes at least one active component. The RX circuit generates a processed RX signal by processing an RX input signal according to the LO signal. The calibration circuit checks a signal characteristic of the processed RX signal by detecting if a calibration tone exists within a receiver bandwidth, set a frequency calibration control output in response to the calibration tone being not found in the receiver bandwidth, and output the frequency calibration control output to the LO signal generation circuit. The LO signal generation circuit adjusts an LO frequency of the LO signal in response to the frequency calibration control output.
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公开(公告)号：US20180107239A1
公开(公告)日：2018-04-19
申请号：US15729782
申请日：2017-10-11
Applicant: SOUND DEVICES, LLC
Inventor： Matt Anderson , Francois Morin
CPC classification number: G06F1/04 , G04G3/00 , G06F1/12 , H03J7/065 , H03L7/089 , H03L7/093 , H03L7/0992 , H03L7/16 , H04L7/0004 , H04Q9/00
Abstract: A method includes receiving, by a recording device, an indication of an initializing time and receiving, by the recording device, an indication of a timing pace. The method also includes maintaining, by the recording device, an updated current time based on the initializing time and the timing pace and sensing, via a sensor of the recording device, a condition. The method further includes storing, in memory of the recording device, an indication of the condition and an associated indication of the updated current time. The indication of the updated current time corresponds to when the condition was sensed by the sensor.
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公开(公告)号：US20170201281A1
公开(公告)日：2017-07-13
申请号：US15214784
申请日：2016-07-20
Applicant: Samsung Electronics Co., Ltd.
Inventor： SeongJoong KIM , Joonseong KANG , Seok Ju YUN , Young Jun HONG
CPC classification number: H04B1/16 , H03J3/20 , H03J7/065 , H03J2200/40 , H03L7/0991 , H04B1/1027 , H04B2001/1072
Abstract: A frequency tuning apparatus includes: a frequency tuner configured to tune an oscillation frequency of an oscillator based on target information extracted from a mapping table in correspondence to a target frequency, and oscillation information collected from the oscillator; and a frequency compensator configured to compensate for a compensation error between the tuned oscillation frequency and the target frequency based on an offset table.
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公开(公告)号：US08873682B2
公开(公告)日：2014-10-28
申请号：US13631421
申请日：2012-09-28
Applicant: Broadcom Corporation
Inventor： Rami Mehio , Masoud Kahrizi , Cobus de Beer , Michael Buyanin
IPC: H04L27/06
CPC classification number: H03L7/18 , H03J7/045 , H03J7/065 , H03J2200/10
Abstract: A technique to provide hybrid compensation to correct for drifts in a reference frequency output from a digitally-controlled crystal oscillator (DCXO). A first compensation is provided to the DCXO to adjust for overlap or discontinuity of the reference frequency caused by switching capacitors in the capacitor array that controls drift of the reference frequency output. The second compensation is obtained at a phase-locked loop (PLL) that receives the reference frequency signal from the DCXO. The second compensation adjusts the PLL to adjust for variations of the reference frequency that remain after performing compensation in the DCXO.
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公开(公告)号：US08532234B2
公开(公告)日：2013-09-10
申请号：US13004276
申请日：2011-01-11
Applicant: Laurent Maleysson , Fabien Bonjour
Inventor： Laurent Maleysson , Fabien Bonjour
IPC: H04L27/06
CPC classification number: H03J7/065
Abstract: The disclosure aims to implement an automatic frequency offset compensation of the frequency between emitter and receiver equipments, in radio frequency modules, with a frequency offset that can be larger than that the receiver can allow, without time loss and extra consumption. To solve this problem, the disclosure provides an automatic frequency offset compensation device comprising a reception front end, at least a filter, an I/Q demodulator for obtaining the I (In Phase) and Q (Quadrature) parameter, an automatic frequency control AFC unit for comparison of a received frequency with the real frequency of the equipment, and a microcontroller and a frequency synthesizer. In this device, the frequency offset is calculated by the AFC unit from the information given by the I/Q demodulator. A coarse detection with wide filter can be used for the reception of the first part of the data called preamble signal, and a fine detection with narrow filter can be used for reception of the second part of the data called useful data frame. A frequency synthesis is made using the frequency offset.
Abstract translation: 本公开旨在实现在射频模块中的发射器和接收器设备之间的频率的自动频偏补偿，其频率偏移可以大于接收机允许的频率偏移，而无需时间损耗和额外消耗。 为了解决这个问题，本公开提供了一种自动频偏补偿装置，包括接收前端，至少滤波器，用于获得I（In相）和Q（正交）参数的I / Q解调器，自动频率控制AFC 用于将接收频率与设备的实际频率进行比较的单元，以及微控制器和频率合成器。 在该装置中，频率偏移由AFC单元根据I / Q解调器给出的信息计算。 可以使用具有宽滤波器的粗略检测来接收称为前导码信号的数据的第一部分，并且可以使用具有窄滤波器的精细检测来接收称为有用数据帧的数据的第二部分。 使用频率偏移进行频率合成。
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Patent Agency Ranking
公开(公告)号：US08139161B2
公开(公告)日：2012-03-20
申请号：US12826498
申请日：2010-06-29
Applicant: S. Vincent Birleson , Robert Rudolf Rotzoll , Albert H. Taddiken , Kenneth W. Clayton
Inventor： S. Vincent Birleson , Robert Rudolf Rotzoll , Albert H. Taddiken , Kenneth W. Clayton
IPC: H04N5/44
CPC classification number: H03J1/005 , H03D7/161 , H03J7/065 , H03J2200/14 , H04N5/4401 , H04N5/4446 , H04N5/455 , H04N5/50 , H04N5/52 , H04N5/60 , H04N21/4263
Abstract: A broadband integrated receiver for receiving input signals and outputting composite video and audio signals is disclosed. The receiver employs an up-conversion mixer and a down-conversion mixer in series to produce an intermediate signal. An intermediate filter between the mixers performs coarse channel selection. The down-conversion mixer may be an image rejection mixer to provide additional filtering.
Abstract translation: 公开了用于接收输入信号并输出复合视频和音频信号的宽带集成接收机。 接收机采用上变频混频器和下变频混频器串联产生中间信号。 混合器之间的中间滤波器执行粗通道选择。 下变频混频器可以是镜像抑制混频器以提供额外的滤波。
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公开(公告)号：US20110299639A1
公开(公告)日：2011-12-08
申请号：US13004276
申请日：2011-01-11
Applicant: Laurent Maleysson , Fabien Bonjour
Inventor： Laurent Maleysson , Fabien Bonjour
IPC: H04L27/06
CPC classification number: H03J7/065
Abstract: The disclosure aims to implement an automatic frequency offset compensation of the frequency between emitter and receiver equipments, in radio frequency modules, with a frequency offset that can be larger than that the receiver can allow, without time loss and extra consumption. To solve this problem, the disclosure provides an automatic frequency offset compensation device comprising a reception front end, at least a filter, an I/Q demodulator for obtaining the I (In Phase) and Q (Quadrature) parameter, an automatic frequency control AFC unit for comparison of a received frequency with the real frequency of the equipment, and a microcontroller and a frequency synthesizer. In this device, the frequency offset is calculated by the AFC unit from the information given by the I/Q demodulator. A coarse detection with wide filter can be used for the reception of the first part of the data called preamble signal, and a fine detection with narrow filter can be used for reception of the second part of the data called useful data frame. A frequency synthesis is made using the frequency offset
Abstract translation: 本公开旨在实现在射频模块中的发射器和接收器设备之间的频率的自动频偏补偿，其频率偏移可以大于接收机允许的频率偏移，而无需时间损耗和额外消耗。 为了解决这个问题，本公开提供了一种自动频偏补偿装置，包括接收前端，至少滤波器，用于获得I（In相）和Q（正交）参数的I / Q解调器，自动频率控制AFC 用于将接收频率与设备的实际频率进行比较的单元，以及微控制器和频率合成器。 在该装置中，频率偏移由AFC单元根据I / Q解调器给出的信息计算。 可以使用具有宽滤波器的粗略检测来接收称为前导码信号的数据的第一部分，并且可以使用具有窄滤波器的精细检测来接收称为有用数据帧的数据的第二部分。 使用频率偏移进行频率合成
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8.发明申请公开(公告)号：US20110148531A1
公开(公告)日：2011-06-23
申请号：US12721484
申请日：2010-03-10
Applicant: Klaus Juergen Schoepf , Reimund Rebel , Jan H. Kuypers
Inventor： Klaus Juergen Schoepf , Reimund Rebel , Jan H. Kuypers
CPC classification number: H03B5/30 , H03B5/32 , H03B19/00 , H03C3/095 , H03J7/065 , H03L7/0991 , H03L7/18 , H03L7/197 , H04B1/40
Abstract: Systems and methods for operating with oscillators configured to produce an oscillating signal having an arbitrary frequency are described. The frequency of the oscillating signal may be shifted to remove its arbitrary nature by application of multiple tuning signals or values to the oscillator. Alternatively, the arbitrary frequency may be accommodated by adjusting operation one or more components of a circuit receiving the oscillating signal.
Abstract translation: 描述了用于利用被配置为产生具有任意频率的振荡信号的振荡器进行操作的系统和方法。 振荡信号的频率可以通过将多个调谐信号或值施加到振荡器来移动以消除其任意性质。 或者，可以通过调整接收振荡信号的电路的一个或多个部件来调节任意频率。
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9.发明申请公开(公告)号：US20110133798A1
公开(公告)日：2011-06-09
申请号：US13057055
申请日：2009-08-26
Applicant: Yasunobu Tsukio , Akihiko Namba
Inventor： Yasunobu Tsukio , Akihiko Namba
IPC: H03L7/06
Abstract: A synthesizer includes: a synthesizer unit that outputs an oscillation signal based on a reference oscillation signal; a temperature detecting unit that detects a temperature; a time variation detecting unit that detects a time variation in frequency of the reference oscillation signal based on a result of temperature detection by the temperature detecting unit; and a control unit that adjusts a frequency of the oscillation signal outputted from the synthesizer unit based on a result of detection by the time variation detecting unit. With such a configuration, frequency compensation control is performed on a transducer having a large temperature coefficient.
Abstract translation: 合成器包括：合成器单元，其基于参考振荡信号输出振荡信号; 温度检测单元，其检测温度; 时间变化检测单元，其基于温度检测单元的温度检测结果来检测基准振荡信号的频率的时间变化; 以及控制单元，其基于时间变化检测单元的检测结果调整从合成器单元输出的振荡信号的频率。 通过这样的结构，对具有大的温度系数的换能器进行频率补偿控制。
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公开(公告)号：US20100265412A1
公开(公告)日：2010-10-21
申请号：US12826498
申请日：2010-06-29
Applicant: S. Vincent Birleson , Robert R. Rotzoll , Albert H. Taddiken , Kenneth W. Clayton
Inventor： S. Vincent Birleson , Robert R. Rotzoll , Albert H. Taddiken , Kenneth W. Clayton
IPC: H04N5/50
CPC classification number: H03J1/005 , H03D7/161 , H03J7/065 , H03J2200/14 , H04N5/4401 , H04N5/4446 , H04N5/455 , H04N5/50 , H04N5/52 , H04N5/60 , H04N21/4263
Abstract: A broadband integrated receiver for receiving input signals and outputting composite video and audio signals is disclosed. The receiver employs an up-conversion mixer and a down-conversion mixer in series to produce an intermediate signal. An intermediate filter between the mixers performs coarse channel selection. The down-conversion mixer may be an image rejection mixer to provide additional filtering.
Abstract translation: 公开了用于接收输入信号并输出复合视频和音频信号的宽带集成接收机。 接收机采用上变频混频器和下变频混频器串联产生中间信号。 混合器之间的中间滤波器执行粗通道选择。 下变频混频器可以是镜像抑制混频器以提供额外的滤波。
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