公开(公告)号：US10325162B2

公开(公告)日：2019-06-18

申请号：US15594038

申请日：2017-05-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masakatsu Maeda ,  Hirofumi Nishimura ,  Takahiro Shima ,  Naoya Yosoku ,  Yoshito Hirai

IPC: G06K9/00 ,  G01S13/04 ,  G01S13/93 ,  G08G1/16

Abstract: There is provided a detection device that includes: a position estimator that estimates a candidate position of a crosswalk in a movement direction of a vehicle and estimates a length of the crosswalk and an intersecting angle between the crosswalk and a roadway using the candidate position; a corrector that corrects the numbers of periods and widths of two basis functions based on the estimated length of the crosswalk and the estimated intersecting angle, the two basis functions corresponding to intervals of white lines of the crosswalk and are orthogonal to each other; and a crosswalk detector that detects whether or not the crosswalk is present using both image data which include the candidate position and the two corrected basis functions.

公开(公告)号：US09654063B2

公开(公告)日：2017-05-16

申请号：US14885671

申请日：2015-10-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yukio Okazaki ,  Masakatsu Maeda ,  Shigeki Nakamura ,  Akinori Daimo

IPC: H03F3/04 ,  H03F3/193 ,  H03F1/02 ,  H03F3/24 ,  H03F1/30

CPC classification number: H03F3/193 ,  H03F1/0261 ,  H03F1/301 ,  H03F3/245 ,  H03F2200/18 ,  H03F2200/27 ,  H03F2200/451 ,  H03F2200/453 ,  H03F2200/541 ,  H03F2200/555

Abstract: A bias circuit comprises: a first circuit that comprises a first resistor and a decoupling capacitor; a bias voltage generation circuit that comprises a first transistor being connected to the first circuit; one or more switches; a first replica circuit comprising a second circuit and a second transistor, the second circuit comprising a second resistor and a capacitor, the second transistor being connected to the second circuit; a second replica circuit comprising a third transistor; a comparator that makes a comparison between a pseudo-bias voltage and a reference voltage; and a control circuit that controls the one or more switches on the basis of the comparison result to reduce the amount of the current flowing through the first transistor.