公开(公告)号：EP2041596A2

公开(公告)日：2009-04-01

申请号：EP07812528.3

申请日：2007-06-29

申请人： Sirf Technology, Inc.

发明人： WAN, Marlene ,  GARIN, Lionel ,  ZHANG, Gengsheng

IPC分类号： G01S1/00 ,  G01S5/14

CPC分类号： G01S19/48 ,  G01C21/206 ,  G01S19/05

摘要： An Aided Location Communication System ('ALCS') is described. The ALCS may include a geolocation server including a non-GPS position server, at least one server aiding database, server position-determination module, and a server fusion module. The ALCS may also include an Aided Location Communication Device ('ALCD') including a communication section in signal communication with the geolocation server, and a position-determination section having a GPS Engine.

公开(公告)号：EP1759221A1

公开(公告)日：2007-03-07

申请号：EP05785301.2

申请日：2005-06-22

申请人： SiRF Technology, Inc.

发明人： PANDE, Ashutosh ,  CHANG, Steven ,  GARIN, Lionel ,  ZHANG, Qiyue, John

IPC分类号： G01S1/00

CPC分类号： G01S19/37 ,  G01S5/0072 ,  G01S19/05 ,  G01S19/07 ,  G01S19/256 ,  G01S19/258 ,  H04B7/2693

摘要： A virtual satellite system server that collects and transmits aiding and assisting data to satellite positioning system enabled device upon an event occurring or upon receipt of a message where the virtual satellite system server may also have a location server that contains location data and determines which virtual satellite system server may respond to another device seeking aiding or assisting information in order for the other device to determine it's position.