Google申請了一個定位的專利

從USPTO公開的資料顯示：Google申請了一個定位的專利，用於輔助無法順利接收GPS訊號時的定位。當使用者無法順利連接GPS訊號時，透過其他三組連網設備來計算相對的距離位置，利用三點定位的方式取得精準的座標位置。

US20120157123
Title : PEER-TO-PEER LOCATION SERVICE
Filing Date : 2011.9.30.
Application Date: 2012.6.21.
Abstract :
Techniques are described for obtaining high-resolution physical locations for a wireless device by leveraging the high-resolution physical location capabilities of wireless peers of the wireless
device to provide a peer-to-peer location service and facilitate location targeting. Wireless devices provide location updates to a computing cloud, which stores records associating wireless device identifiers with received location information for the corresponding wireless devices. A wireless device issues a peer discovery request to dynamically identify nearby wireless peers in its
network. The wireless device then sends wireless device identifiers for the nearby wireless peers in a location request to the computing cloud, which estimates a location for the wireless device using the previously recorded location information for the nearby wireless peers. The computing cloud returns the estimated location to the requesting wireless device.

參考網站http://www.engadget.com/2012/06/21/google-files-for-a-patent-on-peer-to-peer-location-finding/