公开(公告)号：US20150378001A1

公开(公告)日：2015-12-31

申请号：US14745816

申请日：2015-06-22

Applicant: DENSO CORPORATION

Inventor： Toru INOUE ,  Toshiaki NAKAYAMA

IPC: G01S5/00 ,  G01S5/18

CPC classification number: G01S5/0045 ,  G01S1/725 ,  G01S5/18

Abstract: A position information providing apparatus for providing present position information to a position notifier apparatus is provided. The position information providing apparatus includes an ultrasonic wave output device for outputting ultrasonic wave and a controller for controlling the ultrasonic wave output device. In accordance with contents of the present position information, the controller sequentially selects a modulation frequency from among multiple detectable frequencies which are detectable by the position notifier apparatus and which are lower than an ultrasonic wave frequency. The controller controls the ultrasonic wave output device so that a maximum value or a minimum value of amplitude of the ultrasonic wave varies with to the selected modulation frequency.

Abstract translation: 提供一种用于向位置通知装置提供当前位置信息的位置信息提供装置。 位置信息提供装置包括用于输出超声波的超声波输出装置和用于控制超声波输出装置的控制器。 根据当前位置信息的内容，控制器从位置通知器装置可检测的低于超声波频率的多个可检测频率中顺次选择调制频率。 控制器控制超声波输出装置，使得超声波的振幅的最大值或最小值随选定的调制频率而变化。

公开(公告)号：US20180365981A1

公开(公告)日：2018-12-20

申请号：US16062131

申请日：2016-12-16

Applicant: DENSO CORPORATION

Inventor： Toshiaki NAKAYAMA ,  Toru INOUE

IPC: G08C23/02 ,  H04B11/00 ,  G01S1/74 ,  G01S1/76 ,  H04W74/00 ,  H04W48/14

Abstract: An information provision apparatus includes: an information signal generator unit that generates an information signal containing information on a provision target; a converter unit that converts the generated information signal into a sound wave and outputs the sound wave; and a wireless communicator unit that performs wireless transmission and reception of data with a communication apparatus. Further, the information provision apparatus is enabled to receive an activation signal transmitted using a specific wireless transmission medium from a signal output apparatus. In response to that the activation signal is received, the information provision apparatus transitions into a state enabling wireless transmission and reception of data with the communication apparatus.