公开(公告)号：EP1684086A3

公开(公告)日：2007-10-03

申请号：EP06000740.8

申请日：2006-01-13

申请人： Seiko Epson Corporation

发明人： Kimura, Akira

IPC分类号： G01S5/10

CPC分类号： G01S5/0081 ,  G01S5/021

摘要： A time difference information supply system includes: a terminal unit for receiving satellite signals as signals from positioning satellites; and a plurality of communication base stations asynchronous with one another, which can communicate with the terminal unit and include base station time measuring means for measuring time of the communication base stations, transmission information producing means for producing transmission information containing transmission time, and transmission information transmitting means for transmitting the transmission information to the terminal unit on transmission radio waves. The terminal unit includes: distance information storing means for storing distance information indicating distances between the terminal unit and the communication base stations with which the terminal unit can communicate; satellite time synchronizing means for maintaining synchronicity with time of the positioning satellites based on the satellite signals from the plural positioning satellites; transmission radio wave receiving means for receiving the transmission radio waves from the plural communication base stations simultaneously or sequentially, reception time information producing means for producing reception time information indicating reception time of the transmission radio waves; communication base station distance acquiring means for acquiring distances between the terminal unit and the communication base stations from the distance information storing means; estimated reception time information producing means for producing estimated reception time information indicating estimated reception time of the transmission radio waves based on the transmission time contained in the transmission information and the distances between the terminal unit and the communication base stations; transmission time difference information producing means for producing transmission time difference information indicating differences of the transmission time based on the reception time information and the estimated reception time information; and transmission time difference information storing means for storing the transmission time difference information of the plural communication base stations.

公开(公告)号：EP2221642A3

公开(公告)日：2010-12-08

申请号：EP10161976.5

申请日：2007-09-06

申请人： Seiko Epson Corporation

发明人： Kimura, Akira

IPC分类号： G01S1/00 ,  G01S19/24 ,  G01S19/37

CPC分类号： G01S19/37 ,  G01S19/24

摘要： A slice set for a specific period of time is acquired from a storage area of a memory which is a ring buffer while changing the read position, and the signal strength total value of each slice set is calculated. The signal strengths of the slices include in the maximum strength slice set and the signal strengths of the slices preceding or subsequent to the maximum strength slice set are calculated, and the final signal read position is determined based on a read offset of the maximum strength slice. A GPS satellite signal is acquired and tracked based on the slice read from the determined signal read position, and a specific positioning process is performed.

公开(公告)号：EP1916536A3

公开(公告)日：2009-10-14

申请号：EP07017466.9

申请日：2007-09-06

申请人： Seiko Epson Corporation

发明人： Kimura, Akira

IPC分类号： G01S1/00

CPC分类号： G01S19/37 ,  G01S19/24

摘要： A slice set for a specific period of time is acquired from a storage area of a memory which is a ring buffer while changing the read position, and the signal strength total value of each slice set is calculated. The signal strengths of the slices included in the maximum strength slice set and the signal strengths of the slices preceding or subsequent to the maximum strength slice set are calculated, and the final signal read position is determined based on a read offset of the maximum strength slice. A GPS satellite signal is acquired and tracked based on the slice read from the determined signal read position, and a specific positioning process is performed.

公开(公告)号：EP1621895A1

公开(公告)日：2006-02-01

申请号：EP05016402.9

申请日：2005-07-28

申请人： SEIKO EPSON CORPORATION

发明人： Kimura, Akira

IPC分类号： G01S1/00 ,  G01S5/00

CPC分类号： G01S19/28 ,  G01S19/25

摘要： To provide without raising costs, a position locating system, etc. which can utilize aid information from a plurality of sorts of external apparatuses a terminal device (50) includes acquisition means for acquiring aid information (154) from an information providing apparatus, judgment means for judging the sort of the information providing apparatus, (20) (etc.), on the basis of positioning charge information (154a) contained in the aid information (154), information generation means for generating positioning basis information (156) on the basis of position-relevant signals, generation means for locating a current position on the basis of the positioning basis information (156), so as to generate terminal-located position information and signal reception time information indicating signal reception times of the position-relevant signals, and correction means for correcting the positioning basis information (156) on the basis of the signal reception time information, so as to generate corrected positioning basis information (162).

摘要翻译： 为了提供不增加成本的位置定位系统等，其可以利用来自多种外部设备的辅助信息，终端设备（50）包括用于从信息提供设备获取辅助信息（154）的获取装置，判断装置 用于根据包含在辅助信息（154）中的定位费用信息（154a）来判断信息提供装置的类别（20）（等），信息产生装置，用于在 位置相关信号的基础，基于定位基础信息（156）来定位当前位置的发生装置，以便生成终端位置信息和指示位置相关信号的信号接收时间的信号接收时间信息 以及校正装置，用于根据信号接收时间信息来校正定位基础信息（156），以便产生 校正定位基准信息（162）。

公开(公告)号：EP1632784B1

公开(公告)日：2007-07-11

申请号：EP05018889.5

申请日：2005-08-31

申请人： SEIKO EPSON CORPORATION

发明人： Kimura, Akira

IPC分类号： G01S1/00

CPC分类号： G01S19/23 ,  G01S5/0036 ,  G01S19/25 ,  G01S19/28

公开(公告)号：EP1400815A1

公开(公告)日：2004-03-24

申请号：EP03021006.6

申请日：2003-09-17

申请人： eRide, Inc. ,  SEIKO EPSON CORPORATION

发明人： McBurney, Paul W. ,  Kimura, Akira

IPC分类号： G01S5/14

CPC分类号： G01S19/27 ,  G01S19/258

摘要： An SPS receiver comprises a radio receiver for measuring pseudoranges to orbiting SPS satellites, a local real time clock accurate within three seconds of true SPS system time, and a communication channel to receive NAV-data rebroadcasts from a server. Such server is associated with its own private navigation receiver that has direct satellite signal reception that is strong enough to reliably demodulate the SPS system NAV-data. The SPS receiver synthesizes its own NAV-data from time information provided by the local real time clock and almanac and ephemeris data provided by the server in the rebroadcast. Thus the SPS receiver can operate in weak signal environments that would otherwise be impossible.

摘要翻译： SPS接收机包括用于测量绕轨道SPS卫星的伪距的无线电接收机，在真实SPS系统时间的三秒内精确的本地实时时钟，以及从服务器接收NAV数据重播的通信信道。 这样的服务器与其自己的具有直接卫星信号接收的私人导航接收机相关联，其具有足够强度以可靠地解调SPS系统NAV数据。 SPS接收机根据由本地实时时钟提供的时间信息和由转播服务器提供的历书和星历数据综合自己的NAV数据。 因此，SPS接收机可以在弱信号环境中工作，否则将是不可能的。

公开(公告)号：EP2221642A2

公开(公告)日：2010-08-25

申请号：EP10161976.5

申请日：2007-09-06

申请人： Seiko Epson Corporation

发明人： Kimura, Akira

IPC分类号： G01S19/24 ,  G01S19/37

CPC分类号： G01S19/37 ,  G01S19/24

摘要： A slice set for a specific period of time is acquired from a storage area of a memory which is a ring buffer while changing the read position, and the signal strength total value of each slice set is calculated. The signal strengths of the slices include in the maximum strength slice set and the signal strengths of the slices preceding or subsequent to the maximum strength slice set are calculated, and the final signal read position is determined based on a read offset of the maximum strength slice. A GPS satellite signal is acquired and tracked based on the slice read from the determined signal read position, and a specific positioning process is performed.

摘要翻译： 在改变读取位置时，从作为环形缓冲器的存储器的存储区域中获取特定时间段的片段，并且计算每个片段集合的信号强度总值。 切片的信号强度包括在最大强度切片组中，并且计算在最大强度切片集合之前或之后的切片的信号强度，并且基于最大强度切片的读偏移来确定最终信号读取位置 。 基于从确定的信号读取位置读取的片段获取并跟踪GPS卫星信号，并且执行特定的定位处理。

公开(公告)号：EP1785740B1

公开(公告)日：2008-05-14

申请号：EP06023119.8

申请日：2006-11-07

申请人： Seiko Epson Corporation

发明人： Kimura, Akira

IPC分类号： G01S1/00

CPC分类号： G01S19/22

公开(公告)号：EP1916537A1

公开(公告)日：2008-04-30

申请号：EP07017467.7

申请日：2007-09-06

申请人： Seiko Epson Corporation

发明人： Kimura, Akira

IPC分类号： G01S1/00

CPC分类号： G01S19/37 ,  G01S19/24 ,  G01S19/29

摘要： Signals output from two filters included in a filter section 70 and differing in passband are respectively stored in different memories included in a memory section 80, and a positioning process is performed based on the signal stored in the memory. Specifically, the signal strength of a received signal is calculated by a coherent accumulation process and an incoherent accumulation process, and a signal system used for positioning is alternatively switched to a high-sensitivity system S1 or a high-accuracy system S2 as a result of determining whether or not the signal strength is equal to or greater than a threshold value.

摘要翻译： 包括在滤波器部分70中并且通带不同的两个滤波器的信号分别存储在包括在存储器部分80中的不同存储器中，并且基于存储在存储器中的信号执行定位处理。 具体地说，通过相干累积处理和非相干累积处理来计算接收信号的信号强度，并且用于定位的信号系统交替地切换到高灵敏度系统S1或高精度系统S2，作为 确定信号强度是否等于或大于阈值。

公开(公告)号：EP1916536A2

公开(公告)日：2008-04-30

申请号：EP07017466.9

申请日：2007-09-06

申请人： Seiko Epson Corporation

发明人： Kimura, Akira

IPC分类号： G01S1/00

CPC分类号： G01S19/37 ,  G01S19/24

摘要： A slice set for a specific period of time is acquired from a storage area of a memory which is a ring buffer while changing the read position, and the signal strength total value of each slice set is calculated. The signal strengths of the slices included in the maximum strength slice set and the signal strengths of the slices preceding or subsequent to the maximum strength slice set are calculated, and the final signal read position is determined based on a read offset of the maximum strength slice. A GPS satellite signal is acquired and tracked based on the slice read from the determined signal read position, and a specific positioning process is performed.

摘要翻译： 在改变读取位置时，从作为环形缓冲器的存储器的存储区域中获取特定时间段的片段，并且计算每个片段集合的信号强度总值。 计算包括在最大强度切片组中的切片的信号强度和在最大强度切片集合之前或之后的切片的信号强度，并且基于最大强度切片的读取偏移来确定最终信号读取位置 。 基于从确定的信号读取位置读取的片段获取并跟踪GPS卫星信号，并且执行特定的定位处理。