公开(公告)号：WO2006120499A1

公开(公告)日：2006-11-16

申请号：PCT/IB2005/001531

申请日：2005-05-12

Applicant: NOKIA CORPORATION, ,  HUUSKONEN, Pertti ,  KAARIO, Juha ,  KOKKALA, Janne

Inventor： HUUSKONEN, Pertti ,  KAARIO, Juha ,  KOKKALA, Janne

IPC: G01S5/26

CPC classification number: G01S5/26 ,  G01S5/30

Abstract: An acoustical positioning system for positioning a portable electronic devicecomprising: a loudspeaker system comprising three or more loudspeakers and a control unit operable according to a first time reference wherein the control unit controls the transmission of a series of audio beacons from the loudspeakers, wherein a first beacon is transmitted at a first time of the first time reference from a first speaker, a second beacon is transmitted at a second time of the first time reference from a second speaker, and a third beacon is transmitted at a third time of the first time reference from a third speaker; at least one portable electronic device operable according to a second time reference and comprising: synchronization means for synchronising the second time reference to the first time reference; a microphone for receiving the transmitted series of audio beacons; means for detecting the time according to the second' time reference at which an audio beacon is received and for identifying the origin of the received audio beacon, wherein the first beacon is received at a fourth time according to the second time reference, the second beacon is received at a fifth time according to the second time, and the third beacon is received at a sixth time according to the second time reference; and means for determining a position of the portable device using relative positions of the first, second and third speakers and the difference between the first time and the fourth time, between the second time and the fifth time, and between the third time and the sixth time.

Abstract translation: 一种用于定位便携式电子设备的声学定位系统，包括三个或更多个扬声器和根据第一时间参考可操作的控制单元的扬声器系统，其中控制单元控制来自扬声器的一系列音频信标的传输，其中第一 信标在第一时间基准的第一时间从第一扬声器发送，第二信标在第一时间基准的第二时间从第二扬声器发送，并且在第一时间的第三时间发送第三信标 第三位发言者提及; 至少一个可根据第二时间参考可操作的便携式电子设备，包括：同步装置，用于使所述第二时间参考与所述第一时间参考同步; 麦克风，用于接收传输的一系列音频信标; 用于根据接收到音频信标的第二“时间基准”检测时间并用于识别接收的音频信标的原点的装置，其中根据第二时间参考在第四时间接收第一信标，第二信标 根据第二时间在第五时间接收第三信标，并且根据第二时间基准在第六时间接收第三信标; 以及用于使用第一，第二和第三扬声器的相对位置以及第一时间和第四时间之间的时间之间，第二时间和第五时间之间以及在第三时间和第六时间之间以及在第三时间和第六时间之间确定便携式设备的位置的装置 时间。