The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2024
Filed:
Jan. 07, 2021
Alpine Electronics, Inc., Tokyo, JP;
Teiichi Ichikawa, Iwaki, JP;
ALPINE ELECTRONICS, INC., Tokyo, JP;
Abstract
Four infrared LEDs and two photodiodes PD are arranged below a lower side of a display surface in the order of an LED, a PD, an LED, an LED, a PD, and an LED. A detection signal Aof the PDwhen the LEDemits light, a detection signal Aof the PDwhen the LEDemits light, a detection signal Aof the PDwhen the LEDemits light, and a detection signal Aof the PDwhen the LEDemits light are used to estimate a reflection generation position in the left-right direction, and a threshold Th is set such that the threshold Th increases when the reflection generation position is on the left side, which is a driver's seat side. If the maximum value of A, A, A, and Aexceeds the threshold Th, the approach of the user's hand is detected.