公开(公告)号：US20100141524A1

公开(公告)日：2010-06-10

申请号：US12695670

申请日：2010-01-28

申请人： Shigeru IMAFUKU ,  Mikio NAGAHARA ,  Shunichi MIZUOCHI ,  Akifumi HAYASHI ,  Tomoyuki KURATA

发明人： Shigeru IMAFUKU ,  Mikio NAGAHARA ,  Shunichi MIZUOCHI ,  Akifumi HAYASHI ,  Tomoyuki KURATA

IPC分类号： G01S19/28

CPC分类号： G01S19/29 ,  G01S19/23

摘要： A terminal device includes a plurality of search channel sections which search for a positioning satellite, a candidate reception frequency calculation section which calculates a candidate reception frequency of a first acquisition target satellite by causing the search channel sections to perform the correlation accumulation process for a first accumulation time, a candidate frequency confirmation section which confirms reliability of the candidate reception frequency by causing the search channel sections to perform the correlation accumulation process for a second accumulation time longer than the first accumulation time, a final frequency calculation section which calculates a final frequency by causing the search channel sections to perform the correlation accumulation process for a third accumulation time longer than the second accumulation time, and a first difference calculation section which calculates a difference between an estimated synchronization frequency corresponding to each first acquisition target satellite and the final frequency.

摘要翻译： 一种终端设备包括搜索定位卫星的多个搜索频道部分，候选接收频率计算部分，其通过使搜索频道部分执行第一采集目标卫星的相关累积处理来计算第一采集目标卫星的候选接收频率 累积时间，候选频率确认部，其通过使搜索频道部对于比第一累积时间长的第二累积时间进行相关累积处理来确认候选接收频率的可靠性;最终频率计算部，其计算最终频率 通过使搜索频道部分对比第二累积时间长的第三累积时间执行相关累积处理，以及第一差分计算部分，其计算估计的同步频率对应t o每个首次采集目标卫星和最终频率。

公开(公告)号：US20080198068A1

公开(公告)日：2008-08-21

申请号：US12030686

申请日：2008-02-13

申请人： Tomoyuki KURATA

发明人： Tomoyuki KURATA

IPC分类号： G01S1/00

CPC分类号： G01S19/46 ,  G01S19/252

摘要： A final located position when a GPS receiver section (positioning section) has finished positioning is determined to be the latest located position, and the combination of identification information (ID) of base stations (suspended base stations) with which a portable telephone wireless communication circuit section has performed wireless communication is stored in a flash ROM. The combination of base stations that currently perform wireless communication with the wireless communication section and the combination of the suspended base stations stored in the flash ROM are compared when the GPS receiver section again performs positioning. When it has been determined that the combinations coincide, the latest located position stored in the flash ROM is estimated to be the present position of a portable telephone. The estimated present position is used as the initial position during the first positioning when the GPS receiver section again performs positioning.

摘要翻译： 当GPS接收器部分（定位部分）已经完成定位时的最终定位位置被确定为最新的定位位置，并且将基站（悬挂基站）的识别信息（ID）与便携式电话无线通信电路 部分已执行无线通信存储在闪存ROM中。 当GPS接收机部分再次执行定位时，比较当前执行与无线通信部分的无线通信的基站的组合和存储在闪存ROM中的挂起的基站的组合。 当确定组合相符时，存储在闪存ROM中的最新位置位置估计为便携式电话的当前位置。 当GPS接收机部分再次执行定位时，将估计的当前位置用作第一定位期间的初始位置。