公开(公告)号：US12007478B2

公开(公告)日：2024-06-11

申请号：US16982405

申请日：2019-03-14

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hiroshi Koshida ,  Shinzo Koyama ,  Motonori Ishii ,  Shigetaka Kasuga

IPC: G01C3/08 ,  G01S7/481 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/89

CPC classification number: G01S17/10 ,  G01S7/4816 ,  G01S7/4865 ,  G01S17/89

Abstract: A distance measuring device is to be connected to a wave transmission module to transmit a measuring wave and a wave reception module including a first wave receiver and a second wave receiver, both of which receive the measuring wave reflected from a target. In this distance measuring device, a first wave reception period in which the first wave receiver receives the measuring wave and a second wave reception period in which the second wave receiver receives the measuring wave overlap with each other on a time axis. In addition, in this distance measuring device, a time lag is provided between respective beginning times of the first and second wave reception periods. The time lag is shorter than either the first wave reception period or the second wave reception period.

公开(公告)号：US10764505B2

公开(公告)日：2020-09-01

申请号：US16323434

申请日：2017-08-07

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Masato Takemoto ,  Shinzo Koyama ,  Shigeru Saitou ,  Motonori Ishii ,  Hiroshi Koshida

IPC: H04N5/235 ,  H04N5/232 ,  H04N5/225 ,  G01S17/00

Abstract: A projection image pickup device includes a pulsed-light emitter, an optical sensor, a reference timing generator that generates a signal indicating an operation reference timing, a controller, and a signal processor. The signal processor sets a differential signal between an output signal from the optical sensor in the second exposure period and an output signal from the optical sensor in the first exposure period as a first differential signal, sets a differential signal between an output signal from the optical sensor in the third exposure period and the output signal from the optical sensor in the first exposure period as a second differential signal, and outputs the sum total of at least two differential signals including the first differential signal and the second differential signal.