Apparatus and method for measuring distance and location

    公开(公告)号:US11079481B2

    公开(公告)日:2021-08-03

    申请号:US15086920

    申请日:2016-03-31

    Abstract: An apparatus and a method for measuring distance by using electronic devices are provided. The apparatus includes an output unit, an input unit, and a controller. The output unit may be configured to transmit the first sound wave, and the input unit may be configured to receive the second sound wave from another apparatus that receives the first sound wave. The controller may be configured to determine the distance between the apparatus and the another apparatus based on a first value and a second value. The first value may correspond to a difference between a timing of initiating a transmission of the first sound wave and a timing of receiving the second sound wave, and the second value may correspond to a difference between a timing when the another apparatus initiates the transmission of the second sound wave and the timing when the another apparatus receives the first sound wave.

    Method and device for service negotiation

    公开(公告)号:US10271358B2

    公开(公告)日:2019-04-23

    申请号:US14317725

    申请日:2014-06-27

    Abstract: A method and an electronic device for service negotiation are provided. The method includes sensing, by the electronic device, a counterpart device through a first protocol, transmitting a request message to the counterpart device through the first protocol, the request message including indication information indicating that the electronic device requests a first service and first service information regarding the first service, and connecting with the counterpart device through a second protocol, when a selection message including indication information selecting the first service is received from the counterpart device through the first protocol, and, after connecting through the second protocol, executing the first service with the counterpart device using the first service information. The request message and the selection message each includes connection information for a connection using the second protocol, and the electronic device and the counterpart device use the connection information to perform the connection using the second protocol.

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