Method for manufacturing vibrator, vibrator, and vibrator device

    公开(公告)号:US12089498B2

    公开(公告)日:2024-09-10

    申请号:US17361478

    申请日:2021-06-29

    发明人: Seiichiro Ogura

    CPC分类号: H10N30/01 H10N30/20 H10N30/87

    摘要: A vibrator includes: a base portion; a vibrating arm including an arm portion which extends from the base portion, and a weight portion which is located on a tip end side of the arm portion and which has a first main surface and a second main surface that are in a front-back relationship; and a weight film disposed at the first main surface of the weight portion. The first main surface includes a first planar surface, a second planar surface which is located closer to the second main surface than is the first planar surface and which is parallel to the first planar surface, and an inclined surface which couples the first planar surface and the second planar surface and which forms an angle of 100° or less with the first planar surface. A method for manufacturing a vibrator includes: a preparation step of preparing the above-described vibrator; and a removing step of removing a part of the weight film by emitting an energy ray to the weight film from a normal direction of the first planar surface.

    NB-IoT wake-up receiver
    92.
    发明授权

    公开(公告)号:US12089160B2

    公开(公告)日:2024-09-10

    申请号:US17708017

    申请日:2022-03-30

    摘要: A low-power standard-compliant NB-IoT wake-up receiver (WRX) is presented. The WRX is designed as a companion radio to a full NB-IoT receiver, only operating during discontinuous RX modes (DRX and eDRX), which allows the full high-power radio to turn off while the wake-up receiver efficiently receives NB-IoTWake-Up Signals (WUS). The fabricated receiver achieves 2.1 mW power at −109 dBm sensitivity with 180 kHz bandwidth over the 750-960 MHz bands. The WRX is fabricated in 28 nm CMOS and consumes 5× less power than the best previously published traditional NB-IoT receivers. This disclosure is the first designed dedicated wake-up receiver for the NB-IoT protocol and demonstrates the benefits of utilizing a WRX to reduce power consumption of NB-IoT radios.

    Vibration device and oscillator
    95.
    发明授权

    公开(公告)号:US12088277B2

    公开(公告)日:2024-09-10

    申请号:US17322948

    申请日:2021-05-18

    IPC分类号: H03H9/19 G01K7/32 H03B5/32

    CPC分类号: H03H9/19 G01K7/32 H03B5/32

    摘要: A vibration device includes a quartz substrate including a first vibration section, a second vibration section, and a third vibration section, a pair of first excitation electrodes formed at two principal surfaces of the quartz substrate, a pair of second excitation electrodes so formed as to sandwich the second vibration section in the thickness direction of the quartz substrate, and a pair of third excitation electrodes so formed as to sandwich the third vibration section in the thickness direction of the quartz substrate. At least one of the pair of second excitation electrodes is formed at a first inclining surface that inclines with respect to the two principal surfaces. At least one of the pair of third excitation electrodes is formed at a second inclining surface that inclines with respect to the two principal surfaces. The second inclining surface inclines with respect to the first inclining surface.

    System and a method for feedback compression through sample combining in digital predistortion

    公开(公告)号:US12088260B1

    公开(公告)日:2024-09-10

    申请号:US18591765

    申请日:2024-02-29

    IPC分类号: H03F1/32 H04L25/49

    CPC分类号: H03F1/3247 H03F1/3229

    摘要: Example embodiments provide a compression technique of feedback samples for digital predistortion. A system (100) may comprise a feedback receiver (116) configured to receive feedback signal of a power amplifier (112) output and determine a set of under-sampled samples based on the feedback signal; a compressing circuitry (130) configured to: obtain the under-sampled samples; and compress the under-sampled samples, wherein two or more consecutive under-sampled samples are combined into one or more single samples based on one or more predetermined parameters; and a model coefficient training circuitry (102) configured to receive the compressed under-sampled samples and determine model coefficients for digital predistortion based on the compressed under-sampled samples. A system and a method are disclosed.

    Inspection method and inspection device

    公开(公告)号:US12086976B2

    公开(公告)日:2024-09-10

    申请号:US17560362

    申请日:2021-12-23

    发明人: Ryohei Kuri

    摘要: An inspection method includes: a first acquisition step of acquiring information in which information on a color difference with respect to a reference color is assigned to each of a plurality of first divided regions into which an reference image is divided; a second acquisition step of acquiring information in which information on a color difference with respect to the reference color is assigned to each of a plurality of second divided regions into which a captured image is divided; a first comparison step of comparing the information on the color difference of each of the first divided regions with the information on the color difference of each of the corresponding second divided regions; and a second comparison step of comparing the information on the color difference of each of the first divided regions with the information on the color difference of each of the second divided regions in a combination different from the combination in which the comparison is performed in the first comparison step, and whether reference image data and the captured image data match each other is determined based on a first comparison result obtained in the first comparison step and a second comparison result obtained in the second comparison step.

    Ink jet ink composition and recording method

    公开(公告)号:US12084586B2

    公开(公告)日:2024-09-10

    申请号:US17980932

    申请日:2022-11-04

    发明人: Yuta Asakawa

    摘要: A water-based ink jet ink composition according to the present disclosure includes: a colorant; an amine; and a water-soluble low molecular weight organic compound and is used for recording on a non-absorbing recording medium or a low-absorbing recording medium. The water-soluble low molecular weight organic compound contains an alkylene glycol monoether (B) represented by general formula (1) having a standard boiling point of 210° C. or less and an alkanediol (A) having a standard boiling point of 210° C. or less at a mass ratio (B/A) of 0.2 to 0.9, a content of a water-soluble low molecular weight organic compound having a standard boiling point of 250° C. or less is 8 to 30 percent by mass with respect to a total mass of the ink composition, a water-soluble low molecular weight organic compound which is an alkane polyol having a standard boiling point of more than 250° C. is not contained at a content of more than 3 percent by mass with respect to the total mass of the ink composition, and a content of the amine with respect to the total mass of the ink composition is 5 percent by mass or less.




    In the general formula (1), R1 represents an alkylene group having 2 to 5 carbon atoms, R2 represents an alkyl group having 1 or 2 carbon atoms, and n represents 1 or 2.