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US 10,704,914 B2Granted
Positioning method using broadcast speeches
AssigneesHangZhou HaiCun Information Technology Co., Ltd., Fuobiao Zhang
InventorGuobiao Zhang
Life of this patent
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Abstract
A positioning method using music pieces continuously provides positioning service. At each signature burst (i.e., a highly unique short musical segment suitable for positioning), sounds of a music piece are used for positioning. Between signature bursts, dead reckoning (DR) is used.
Claims10
An indoor-positioning method for continuously determining an indoor geographic area of an apparatus using sounds of a broadcast speech including first and second signature bursts separated by a first non-signature interval and followed by a second non-signature interval, comprising the steps of:
- A) determining a first position of said apparatus by an acoustic-positioning (AP) module at said first signature burst by correlating received audio signals and transmitted audio signals;
- B) determining locations of said apparatus by using said first position as a first initial location for dead reckoning by a dead-reckoning (DR) module during said first non-signature interval;
- C) determining a second position of said apparatus by said AP module at said second signature burst by correlating received audio signals and transmitted audio signals;
- D) determining locations of said apparatus by using said second position as a second initial location for dead reckoning by said DR module during said second non-signature interval,
- whereby said broadcast speech is produced by a public address (PA) system.
2 more elements
Dependencies are inferred from the claim text.