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    SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND PROGRAM
    1.
    发明公开
    SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND PROGRAM 审中-公开

    公开(公告)号：US20240319376A1

    公开(公告)日：2024-09-26

    申请号：US18259401

    申请日：2021-12-22

    Applicant: SONY SEMICONDUCTOR SOLUTIONS CORPORATION

    Inventor： TOSHIHISA MIYAKE

    IPC: G01S17/894 ,  G01S7/481 ,  G01S7/4911 ,  G01S7/4915

    CPC classification number: G01S17/894 ,  G01S7/4816 ,  G01S7/4911 ,  G01S7/4915

    Abstract: The present technology relates to a signal processing apparatus, a signal processing method, and a program that enable highly accurate distance measurement over a wide range. A signal processing apparatus calculates a distance to a subject on the basis of the amount of electric charge acquired from a light receiving unit that accumulates, as the amount of electric charge, the amount of reflected light received, the reflected light being modulated light reflected off the subject at the time of measuring the distance by use of the modulated light at a predetermined frequency, the modulated light being emitted from a light emitting unit, and on the basis of the predetermined frequency, and generates a distance image, sets a target area targeted for exposure control for measuring a distance by use of modulated light at a second frequency, on the basis of a first distance image generated at the time of measuring a distance by use of modulated light at a first frequency, and calculates the second frequency on the basis of the target area. The present technology can be applied to a distance measuring apparatus that measures distances by use of a sensor.

    DISTANCE MEASURING DEVICE, DISTANCE MEASURING METHOD, AND DISTANCE MEASURING SENSOR
    2.
    发明公开
    DISTANCE MEASURING DEVICE, DISTANCE MEASURING METHOD, AND DISTANCE MEASURING SENSOR 审中-公开

    公开(公告)号：US20240264307A1

    公开(公告)日：2024-08-08

    申请号：US18566714

    申请日：2022-02-14

    Applicant: SONY SEMICONDUCTOR SOLUTIONS CORPORATION

    Inventor： YUTAKA NAKADA

    IPC: G01S17/32 ,  G01S7/4915

    CPC classification number: G01S17/32 ,  G01S7/4915

    Abstract: The distance measurement time is shortened. A distance measuring device includes a light source unit, a light reception signal generation unit, a time-of-flight detection unit, and a distance detection unit. The light source unit continuously emits reference emission light emitted in synchronization with a reference clock signal and delayed emission light emitted in synchronization with a delayed clock signal having a delay phase at a same cycle as the reference clock signal in a predetermined emission cycle for every predetermined measurement cycle. The light reception signal generation unit includes a light receiving unit that receives reflected light emitted from the light source unit and reflected by an object, detects reflected light based on the reference emission light and reflected light based on the delayed emission light in synchronization with the reference clock signal, and generates a reference light reception signal and a delayed light reception signal. The time-of-flight detection unit detects time-of-flight data including a reference time of flight based on the generated reference light reception signal and a delayed time of flight based on the generated delayed light reception signal for every measurement cycle. The distance detection unit detects a distance to the object based on the detected time-of-flight data.

    Indirect time of flight range calculation apparatus and method of calculating a phase angle in accordance with an indirect time of flight range calculation technique
    9.
    发明授权
    Indirect time of flight range calculation apparatus and method of calculating a phase angle in accordance with an indirect time of flight range calculation technique 有权

    公开(公告)号：US11927669B2

    公开(公告)日：2024-03-12

    申请号：US17016861

    申请日：2020-09-10

    Applicant: Melexis Technologies NV

    Inventor： Andreas Ott

    IPC: G01S17/36 ,  G01S7/4915 ,  G01S17/46

    CPC classification number: G01S17/36 ,  G01S7/4915 ,  G01S17/46

    Abstract: An indirect time of flight range calculation apparatus comprises a light source, a photonic mixer that generates a plurality of output signals corresponding to a first plurality of phase values. A signal processor is also provided to calculate a first vector and a first angle from the first vector. The photonic mixer generates a second plurality of electrical output signals corresponding to a second plurality of phase values. Each phase value of the second plurality of phase values is respectively offset with respect to each phase value of the first plurality of phase values by a predetermined phase offset value. The signal processor processes the second plurality of electrical output signals in order to calculate a second vector, and de-rotates the second vector calculated and calculates a second angle from the de-rotated vector before offsetting the second angle against the first angle, thereby generating a corrected output angle.

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