-
公开(公告)号：US12088253B2
公开(公告)日：2024-09-10
申请号：US18181094
申请日：2023-03-09
Applicant: SEIKO EPSON CORPORATION
Inventor： Koichi Mizugaki
CPC classification number: H03B5/32 , H03B1/02 , H03B5/04 , H03L1/028 , H03L1/04 , H05K1/111 , H05K1/181 , H10N30/88 , H05K2201/10083
Abstract: A circuit board includes: a semiconductor substrate including a first surface and a second surface located at an opposite side from the first surface; a circuit provided at a first surface side; a first external electrode provided at a second surface side; a heater provided at the second surface side; and a plurality of through electrodes penetrating the first surface and the second surface and electrically coupling the circuit and the first external electrode or the heater. The heater and the first external electrode do not overlap each other in a plan view.
-
公开(公告)号：US11949378B2
公开(公告)日：2024-04-02
申请号：US17897223
申请日：2022-08-29
Applicant: TXC Corporation
Inventor： Erh-Shuo Hsu , Wan-Lin Hsieh
Abstract: A crystal oscillator and an oscillating device are provided. The crystal oscillator includes a resonator, a low-thermal conductivity glue, an integrated circuit chip, and a heating element. In the resonator, a crystal blank is hermetically encapsulated. The low-thermal conductivity glue wraps the resonator to suppress temperature variation in the resonator. The integrated circuit chip is disposed below the resonator, and the heating element is configured to supply heat to the resonator.
-
公开(公告)号：US11855646B2
公开(公告)日：2023-12-26
申请号：US17875882
申请日：2022-07-28
Applicant: SEIKO EPSON CORPORATION
Inventor： Yuichi Toriumi
IPC: H03L1/02
Abstract: A circuit device includes an oscillation circuit configured to generate an oscillation signal using a resonator, a temperature sensor circuit configured to output temperature detection data, a temperature compensation circuit configured to perform, based on the temperature detection data, temperature compensation on an oscillation frequency of the oscillation signal, a memory configured to store correction data for correcting the temperature detection data to obtain a temperature, and an interface circuit configured to output the temperature detection data and the correction data.
-
公开(公告)号：US10075171B2
公开(公告)日：2018-09-11
申请号：US15075661
申请日：2016-03-21
Applicant: Seiko Epson Corporation
Inventor： Naohisa Obata
Abstract: An oscillator includes a resonator element; an oscillation circuit which outputs an oscillation signal by oscillating the resonator element; and a temperature compensation circuit as a frequency control circuit which controls an oscillation frequency of the oscillation signal, wherein, if a resonance frequency of the resonator element is referred to as Fr (MHz) and an equivalent series capacitance is referred to as C1 (fF), a relationship of C1≥0.00279×Fr2−0.05684×Fr+2.69481 is satisfied.
-
5.发明申请公开(公告)号：US20180198451A1
公开(公告)日：2018-07-12
申请号：US15803026
申请日：2017-11-03
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： SANGDON JUNG , DOKYUNG LIM , WOOSEOK KIM
CPC classification number: H03L1/028 , H03B5/04 , H03B5/08 , H03B5/32 , H03B5/368 , H03B2201/0266 , H03L1/022 , H03L1/027
Abstract: A temperature compensated oscillation controller includes a temperature compensation circuit configured to provide a reference voltage through a first terminal and to receive an input voltage including temperature information through a second terminal, and an oscillation circuit configured to be connected to an external crystal resonator through third and fourth terminals and to output a clock signal in response to an oscillation signal from the external crystal resonator. The temperature compensation circuit is configured to perform a voltage controlled oscillator-based sensing operation to convert the input voltage into a temperature code and to adjust a frequency of the clock signal using the temperature code.
-
Patent Agency Ranking
公开(公告)号：US20180145629A1
公开(公告)日：2018-05-24
申请号：US15814763
申请日：2017-11-16
Applicant: Seiko Epson Corporation
Inventor： Takehiro YAMAMOTO , Masayuki ISHIKAWA
CPC classification number: H03B5/04 , H03B5/20 , H03B5/362 , H03B2200/0034 , H03B2200/0038 , H03B2200/004 , H03B2200/0046 , H03L1/028
Abstract: A circuit device includes an oscillation circuit configured to cause a resonator to oscillate, a clock signal output circuit configured to output a clock signal based on an oscillation signal from the oscillation circuit, a temperature compensation circuit configured to perform temperature compensation on an oscillation frequency of the oscillation signal, a low-potential-side power supply pad to which low-potential-side electric power is supplied, a high-potential-side power supply pad to which high-potential-side electric power is supplied, and an inter-power-supply capacitor provided between a low-potential-side power supply line electrically continuous with the low-potential-side power supply pad and a high-potential-side power supply line electrically continuous with the high-potential-side power supply pad. The inter-power-supply capacitor is formed of at least two metal layers provided in a region where the temperature compensation circuit is disposed in a plan view.
-
公开(公告)号：US09843331B2
公开(公告)日：2017-12-12
申请号：US15105258
申请日：2014-12-10
Applicant: FRAPINVENTIONS B.V.
Inventor： Antonius Johannes Maria Montagne
Abstract: The invention relates to a method for operating a mechanical resonator in an electronic oscillator, comprising determining a state space description of the resonator, in which state variables are the mass, the stiffness or dimensions of components used in the crystal resonator; providing a table with frequency correction factors as a function of a state space of a resonator; finding a frequency correction factor corresponding to the determined state space; and multiplying the output frequency of the resonator with the correction factor, and to an electronic oscillator, comprising a mechanical resonator, wherein an output frequency of the oscillator is multiplied by a frequency correction factor, the frequency correction factor being obtained from determination of the state variables of the resonator, in particular dominant mechanical state variables.
-
公开(公告)号：US20170331431A1
公开(公告)日：2017-11-16
申请号：US15592200
申请日：2017-05-11
Applicant: NIHON DEMPA KOGYO CO., LTD.
Inventor： Hiroyasu KUNITOMO
CPC classification number: H03L1/04 , H03H9/02102 , H03H9/0519 , H03H9/0547 , H03L1/028
Abstract: A crystal oscillator includes a quartz crystal piece, a semiconductor chip, and a temperature sensor. The semiconductor chip includes an oscillator circuit to cause the quartz crystal piece to oscillate and a first bump. The first bump is connected to the oscillator circuit and disposed on a surface on a side of the quartz crystal piece. The temperature sensor is bonded to the first bump.
-
公开(公告)号：US20170310326A1
公开(公告)日：2017-10-26
申请号：US15490371
申请日：2017-04-18
Applicant: SEIKO EPSON CORPORATION
Inventor： Katsuhito NAKAJIMA
CPC classification number: H03L1/00 , H03B5/32 , H03B5/362 , H03B5/368 , H03B2200/0018 , H03L1/022 , H03L1/028 , H03L7/085 , H03L7/093 , H03L7/095 , H03L7/1075
Abstract: A circuit device includes a phase comparator that performs phase comparison between an input signal based on an oscillation signal and a reference signal, a processor that performs a digital signal process on phase comparison result data which is a result of the phase comparison so as to generate frequency control data, and an oscillation signal generation circuit that generates the oscillation signal having an oscillation frequency which is set on the basis of the frequency control data. The processor performs the digital signal process by using data used when a hold-over state is ended in a case where the hold-over state occurs due to the absence or the abnormality of the reference signal, and then the hold-over state is ended.
-
公开(公告)号：US20170272032A1
公开(公告)日：2017-09-21
申请号：US15070742
申请日：2016-03-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： KUNHEE CHO , DANIELLE GRIFFITH , JAMES MURDOCK , PER TORSTEIN ROINE
CPC classification number: H03B5/04 , H03B5/00 , H03B5/08 , H03B5/32 , H03B5/36 , H03L1/00 , H03L1/022 , H03L1/028 , H03L5/00
Abstract: A circuit includes an oscillator having a driver and a resonator. The driver receives a supply voltage at a supply input and provides a drive output to drive the resonator to generate an oscillator output signal. A power converter receives an input voltage and generates the supply voltage to the supply input of the driver. A temperature tracking device in the power converter controls the voltage level of the supply voltage to the supply input of the driver based on temperature such that the supply voltage varies inversely to the temperature of the circuit.
-
-
-
-
-
-
-
-
-
Search Results
401
records
(took 0.023 seconds)
