CN101578498B - A navigation device and method for providing alternative network connections - Google Patents
A navigation device and method for providing alternative network connections Download PDFInfo
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- CN101578498B CN101578498B CN200880001764.5A CN200880001764A CN101578498B CN 101578498 B CN101578498 B CN 101578498B CN 200880001764 A CN200880001764 A CN 200880001764A CN 101578498 B CN101578498 B CN 101578498B
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Abstract
A method and device are disclosed for navigation. In at least one embodiment, the method includes connecting a navigation device to a server via a modem connection; receiving information from the server; determining whether or not criteria will be met for disconnecting the modem connection; and connecting the navigation device to the server via an alternative connection upon determining that criteria will be met for disconnecting the modem connection. In at least one embodiment, the navigation device includes a modem to connect the navigation device to a server a receiver to receive information from the server; a processor to determine whether or not criteria will be met for disconnecting the connection via the modem; and an alternative connection device (such as the Bluetooth device for paired mobile phone connection, for example) to connect the navigation device to the server, the alternative connection device being used upon the processor determining that criteria will be met for disconnecting the connection of the modem.
Description
Technical field
The application relates generally to air navigation aid and device.
Background technology
Guider for example is used for the navigation between two points traditionally in the vehicles and even during walking.These devices are when being used for the vehicles, and initial the trial planned the fastest route based on the route that for example mainly comprises highway usage usually.Plan that this route is to make the vehicle speed maximization during advancing along described route.
Yet vehicles regular meeting runs into traffic delays during this advances, described delay will make along (even) comprise that mainly the advancing of route of highway slow down.Therefore, guider becomes more perfect and can receive information and utilize described information to plan the navigation way of walking around described traffic delays.Other service also becomes and can be used for guider, for example provide the traffic camera the position, extra renewal except traffic delays information etc. is provided.Can connect via bluetooth or other data, provide this transport information and other information via the mobile phone with the guider pairing.Yet, only use mobile phone to connect, the user of guider can bear mobile network's roaming and other expense.
Summary of the invention
The inventor finds, if in guider, use modulator-demodular unit to connect, the more accurate data that then can receive about vehicle speed, vehicle slowdown reach other data that are used for calculating traffic condition, and thereby the information more accurately about current traffic condition can be provided to guider.In addition, about traffic and other service, the inventor finds, if guider can mainly depend on internal modems and (for example reach pre-SIM card of consulting, wherein price is by guider supplier/manufacturer and telephone service supplier negotiation), then can avoid before may be by extra roaming and other expense of mobile phone supplier acquisition when using the mobile phone that matches with guider.At last, the inventor also finds, keeps the modulator-demodular unit connection and can be preferably when possibility, when losing the modulator-demodular unit connection owing to the variation of (for example) network area, can be useful for navigation provides the ability that switches to alternative connection the (for example, the mobile phone of pairing connects).
In at least one embodiment of the application, a kind of method comprises: via the modulator-demodular unit connection guider is connected to server; Receive information from described server; Determine whether to meet the criterion that disconnects described modulator-demodular unit connection; And after determining to meet the criterion that disconnects described modulator-demodular unit connection, via substituting to connect described guider is connected to described server.
In at least one embodiment of the application, a kind of guider comprises: modulator-demodular unit, and it is in order to be connected to server with described guider; Receiver, it is in order to receive information from described server; Processor, it is in order to determine whether and will meet the criterion of disconnection via the described connection of described modulator-demodular unit; And (for example substitute coupling arrangement, the blue-tooth device that is used for the mobile phone connection of pairing), it after described processor determines to meet the criterion of the described connection that disconnects described modulator-demodular unit, uses described alternative coupling arrangement in order to described guider is connected to described server.
In at least one embodiment of the application, a kind of guider comprises: be used for connecting the member that guider is connected to server via modulator-demodular unit; The member that is used for the information that receives from described server; Be used for determining whether and meet the member of the criterion that disconnects described modulator-demodular unit connection; And be used for determining to meet the criterion of the described modulator-demodular unit connection of disconnection by connecting the member that described guider is connected to described server by substituting.
Description of drawings
Hereinafter will describe the application in more detail by use-case embodiment, will explain described example embodiments by means of accompanying drawing, in the accompanying drawings:
Fig. 1 illustrates the exemplary view of GPS (GPS);
Fig. 2 illustrates the exemplary block diagram of electronic package of guider of the application's embodiment;
Fig. 3 illustrates the exemplary block diagram of server, guider and the connection therebetween of the application's embodiment;
Fig. 4 A and Fig. 4 B are the skeleton views of actual embodiment of the embodiment of guider 200;
Fig. 5 is the modulator-demodular unit of explanation guider and the example embodiments of SIM card;
Fig. 6 is the process flow diagram of explanation the application's embodiment.
Embodiment
Term used herein only is used for describing the purpose of specific embodiment, and does not wish to limit the present invention.As used herein, singulative " " reaches " described " wishes also to comprise plural form, unless context is clearly pointed out in addition.To further recognize, term " comprises " existence of specifying feature, integral body, step, operation, element and/or the assembly of stating when being used for this instructions, but does not get rid of existence or the interpolation of one or more further features, integral body, step, operation, element, assembly and/or its group.
In description is graphic, in the process of illustrated example embodiments, for the sake of clarity, adopt particular term.Yet, the disclosure of patent specification and without wishing to be held to so selected particular term, and should be appreciated that each particular element comprises all technical equivalents of operation in a similar manner.
Hereinafter referring to the graphic example embodiments of describing present application for patent, wherein same reference numbers is represented identical or corresponding part all the time in some views.Same numbers refers to similar elements all the time.As used herein, term " and/or " comprise one or more any and all combinations in the Listed Items that is associated.
The exemplary view of the GPS (GPS) that Fig. 1 explanation can be used by guider, described guider comprises the guider of the application's embodiment.Described system is known and is used for multiple use.In general, GPS is based on the navigational system of satelline radio, and it can determine continuous position, speed, time and (in some cases) directional information for an infinite number user.
The GPS that before had been called NAVSTAR incorporates into a plurality of satellites that turn round with the earth in split hair track.Based on these accurate orbit, gps satellite can be relayed to its position any number receiving element.
Implement gps system when searching gps satellite signal when beginning to scan radio frequency through special equipment with the device that receives gps data.After receiving radio signal from gps satellite, described device is determined the exact position of described satellite via one in the multiple various conventional method.In most of the cases, described device will continue scanning searching signal, and (note that usually not (but can) uses other triangulation technique to determine the position with two signals only till it has obtained at least three different satellite-signals).By implementing geometric triangulation, receiver utilizes three known location to determine that himself is with respect to the two-dimensional position of satellite.This can carry out in a known manner.In addition, obtaining the 4th satellite-signal will allow receiving trap to calculate its three-dimensional position in a known way by how much identical calculating.Position and speed data can be by infinite number user real-time update continuously.
As shown in fig. 1, gps system is substantially by reference number 100 expressions.A plurality of satellites 120 are in the track of the earth 124.The track of each satellite 120 may not be synchronous with the track of other satellite 120, and asynchronous in fact probably.Can be used for gps receiver 140 among the application's the embodiment of guider is shown as from various satellites 120 and receives spread spectrum gps satellite signals 160.
The spread-spectrum signal of launching continuously from each satellite 120 160 utilizes the frequency standard of the pin-point accuracy of realizing by the atomic clock of clock like precision.Each satellite 120 is launched the data stream of the described particular satellite 120 of indication as the part of its data signal transmission 160.Those skilled in the relevant art recognize that gps receiver device 140 obtains to calculate its two-dimensional position for described gps receiver device 140 by triangulation from the spread spectrum gps satellite signal 160 of at least three satellites 120 usually.The acquisition of extra (its produce from the signal 160 of four satellites 120) is altogether permitted gps receiver device 140 and is calculated its three-dimensional position in a known way.
Fig. 2 illustrates the exemplary block diagram of electronic package of guider 200 of the application's embodiment with the block components form.The block diagram that it should be noted that guider 200 does not comprise all component of described guider, but only represents many exemplary components.
In addition, the output unit 260 of other type also can comprise (including but not limited to) audio frequency output unit.Because but the user of output unit 260 navigation device 200 produces audio-frequency information, so should be appreciated that equally, input media 240 also can comprise microphone and the software that is used for receiving the input voice command.
In guider 200, processor 210 functionally is connected to input media 240 and through arranging to receive the input information via described connection from input media 240 via connection, and functionally be connected to via connection in display device 240 and the output unit 260 at least one with information is outputed to described at least one.In addition, processor 210 functionally is connected to storer 230 via connection, and be further adapted for via connecting from I/O (I/O) port 270 reception information/information is sent to I/O (I/O) port 270, wherein I/O port 270 can be connected to the I/O device 280 in guider 200 outsides.Exterior I/O device 270 can include, but is not limited to outside listening device, for example earphone.May further be to the connection of I/O device 280 and to take office the what wired or wireless connection of its external device (ED) (for example car stereo unit), be used for without the operation of hand and/or for the operation of (for example) voice activation formula, be used for to the connection of earphone or headphone and/or be used for connection to (for example) mobile phone, wherein connect can be in order to be connected and/or in order to be established to the connection of server via (for example) the Internet or certain other network setting up data between guider 200 and (for example) the Internet or any other network for mobile phone.
In at least one embodiment, guider 200 comprises the internal modems 290 that is connected to processor 210 and storer 230, and it is used for setting up data connection as will be described below.Modulator-demodular unit 290 can further be connected to transceiver 300, and transceiver 300 is used for that information is transmitted into server 302 and from server 302 reception information.Transceiver 300 further is connected to processor 210.
In at least one embodiment, guider 200 can be set up " movement " network connection with server 302 via not shown outside mobile device (for example mobile phone, PDA and/or arbitrary device with mobile phone technology), connects the numeral connection of (for example via (for example) known Bluetooth technology) thereby set up numeral.After this, by its Internet Service Provider, mobile device can be set up the network connection (for example, passing through the Internet) with server 302.So, can guider 200 (when its alone and/or when in the vehicles, advancing, it can be and be generally mobile) and server 302 between set up " movement " network connection in order to provide " in real time " or at least unusual " new-type " gateway for information.
Use (for example) the Internet sets up mobile device (via the ISP) and for example server 302 waits the network connection between another device to carry out in a known manner.For instance, this can comprise the use of TCP/IP layered protocol.Mobile device can utilize any number communication standard, for example CDMA, GSM, WAN etc.
So, can utilize the Internet of realizing via data connection (for example, via the mobile phone technology in mobile phone or the guider 200) to connect.Connect for this, set up server 302 and be connected with the Internet between the guider 200.This can (for example) connects by mobile phone or other mobile device and GPRS (General Packet Radio Service), and (it is that the high-speed data that is used for mobile device by telecom operators provide connects that GPRS connects; GPRS is in order to be connected to the method for the Internet) carry out.
Arrange for the GRPS phone, the device of bluetooth enable can be in order to correctly to work with the changing frequency spectrum of mobile phone model, manufacturer etc., and for instance, model/manufacturer specific settings can be stored on the guider 200.Can be before or among the embodiment subsequently any one in the mode discussed upgrade information for this reason and the data of storing.
Fig. 2 further specifies at processor 210 and is connected with operability between antenna/receiver 250, and wherein antenna/receiver 250 can be for example gps antenna/receiver.To should be appreciated that, schematically make up antenna and receiver by reference number 250 expressions in order illustrating, but antenna and receiver can be assembly positioned apart, and antenna to can be (for example) GPS chip aerial or helical antenna.
In addition, be understood by those skilled in the art that the electronic package shown in Fig. 2 is to be powered by power supply (not shown) in a usual manner.As be understood by those skilled in the art that, think that the difference of the assembly shown in Fig. 2 is configured in the application's the scope.For instance, in one embodiment, the assembly shown in Fig. 2 can intercom mutually via wired and/or wireless connections etc.Therefore, the scope of the application's guider 200 comprises portable or handheld navigation device 200.
Fig. 3 illustrates the exemplary block diagram of server 302 and the application's guider 200 (via general communication channel 318) of the application's a embodiment.Between the guider 200 in server 302 and the application, set up via (noting being connected of communication channel 318, this connection can be via the data of mobile device connect, via personal computer via the direct connection of the Internet, via the data connection of modulator-demodular unit 290 etc.) time, server 302 can be communicated by letter with guider 200.
Except unaccounted other assembly of possibility, server 302 also comprises processor 304, and described processor 304 functionally is connected to storer 306 and further functionally is connected to bulk data storage device 312 via wired or wireless connection 314.Processor 304 further functionally is connected to transmitter 308 and receiver 310, via communication channel 318 information is transmitted into guider 200 and from guider 200 transmission information.The signal that sends and receive can comprise the signal of data, communication and/or other propagation.The information that is received by server 302 can include, but is not limited to the received information about the variation of the position of the vehicles that hold guider 200 and speed; And the information that is sent by server 302 can include, but is not limited to calculate about transport information and/or out of Memory along the potential delay of the course of the vehicles at guider 200 places.Can be according to selecting or design transmitter 308 and receiver 310 for employed communicating requirement and the communication technology in the communication design of navigational system 200.In addition, it should be noted that and the function of transmitter 308 and receiver 310 can be combined as signal transceiver 309.
The software that is stored in the server memory 306 provides instruction and allows server 302 that service is offered guider 200 for processor 304, for example, to about along the transport information of the potential delay of the course of the vehicles at guider 200 places and/or calculating and the emission of out of Memory.A service that is provided by server 302 comprises processing and is transmitted into guider 200 from the request of guider 200 and with navigation data from bulk data storage device 312.At least one embodiment according to the application, another service that is provided by server 302 comprises for using (for example, to about along the transport information of the potential delay of the course of the vehicles at guider 200 places and/or the calculating of out of Memory) uses various algorithms to handle navigation data and these result calculated are sent to guider 200.
For instance, at least one embodiment of the application, communication channel 318 comprises telephone network and computer network.In addition, at least one embodiment, communication channel 318 may can adapt to for example radio communications such as radio frequency, microwave frequency, infrared communication.In addition, according at least one embodiment, communication channel 318 can adapt to satellite communication.In addition, according at least one embodiment, communication channel 318 can adapt to a plurality of independent satellite systems and can carry out multi-frequency and gps receiver that signal obtains.(contain the interpolation that is about to multi-satellite system, these systems include, but is not limited to russian glonass (GLONASS), GPS 2, GPS 2.5-3, Galileo system (Galileo) and culminant star (ChinaSat)).
To need the given communication technology to include, but is not limited to or the desired signal of signal of communication by communication channel 318 emissions.For instance, described signal can be suitable in the cellular communication technology, and described cellular communication technology for example is time division multiple access (TDMA) (TDMA), frequency division multiple access (FDMA), CDMA (CDMA), global system for mobile communications (GSM) etc.Can by communication channel 318 emission digital signals and simulating signal both.According at least one embodiment, these signals can be for the described communication technology may need through modulation, through encrypting and/or compressed signal.
Bulk data storage device 312 comprises the enough memory spaces for desired navigation application.The example of bulk data storage device 312 can comprise magnetic data medium (for example, hard disk drive), optic storage medium (for example, CD-Rom), charged data storage medium (for example, flash memory), molecular memory etc.
According at least one embodiment of the application, server 302 comprises can be by the remote server of guider 200 via the wireless channel access.According at least one other embodiment of the application, server 302 can comprise that one is positioned at the webserver on LAN (LAN), Wide Area Network (WAN), the virtual private network (VPN) etc.
According at least one embodiment of the application, server 302 can comprise for example personal computer such as desktop or laptop computer, and communication channel 318 can be the cable that is connected between personal computer and the guider 200.Perhaps, personal computer can be connected between guider 200 and the server 302 to be connected setting up the Internet between server 302 and the guider 200.Perhaps, mobile phone or other hand-held device (and/or modulator-demodular unit, for example modulator-demodular unit 290) can be established to the wireless connections of the Internet, are used for via the Internet guider 200 being connected to server 302.
Can download to guider 200 via information information from server 302 is provided, after the user is connected to server 302 with guider 200, the information that can be updated periodically is downloaded, and/or via (for example) wireless mobile coupling arrangement and TCP/IP be connected carry out more constant between server 302 and the guider 200 or be connected frequently after, information is downloaded can be dynamic.For many dynamic calculation, the processor 304 in the server 302 can be used to dispose a large amount of processing needs, yet the processor 210 of guider 200 also can be independent of the connection of server 302 often and dispose many processing and calculating.
The mass storage device 312 that is connected to server 302 can comprise than being maintained at 200 data on one's body of guider more drawing and the route data of volume, comprises map etc.For instance, server 302 can use one group of Processing Algorithm to handle most of devices of advancing along described route of guider 200.In addition, drawing and the route data that is stored in the storer 312 can be to signal (for example, the gps signal) operation that was originally received by guider 200.
As above indicated in Fig. 2 of the application, the guider 200 of the application's a embodiment comprises processor 210, input media 220 and display screen 240.In at least one embodiment, input media 220 and display screen 240 be integrated into integrated form input and display device show to enable information input (via direct input, menu selection etc.) and information (for example by the contact panel screen) both.Well-known as the those skilled in the art, this screen can for example be touch-control input lcd screen.In addition, guider 200 also can comprise any extra input media 220 and/or any extra output unit 240, for example, and the audio frequency input/output device.
Fig. 4 A and Fig. 4 B are the skeleton view of actual embodiment of an embodiment of guider 200.As shown in Fig. 4 A, guider 200 can be the unit of other assembly (including but not limited to inner gps receiver 250, microprocessor 210, power supply, accumulator system 220 etc.) that comprises integrated form input and display device 290 (for example, contact panel screen) and Fig. 2.
As shown in Fig. 4 B, guider 292 can dock or by (for example) just the guider 200 hasps arm 292 that is connected to dock otherwise be connected to the arm 292 (this only is an example, belongs in the application's the scope because be used for being connected to other known alternatives of dock) of dock.Guider 200 can be followed can be in arm 292 rotations, shown in the arrow of Fig. 4 B.In order to discharge being connected between guider 200 and the dock, for example can press the button (this only is an example, because other known alternatives that is used for disconnecting with dock is all in the application's scope) on the guider 200.
In at least one embodiment, guider 200 can be via mobile device 400 (for example, mobile phone, PDA, and/or any device with mobile phone technology) sets up " movement " network connection with server 302, thereby set up numeral and connect (for example, the numeral via for example known Bluetooth technology connects).Thereafter, mobile device 400 can be set up network connection (for example passing through the Internet) with server 302 by its Internet Service Provider.Thereby, guider 200 (when its alone and/or when in the vehicles, advancing, it can be and be generally mobile) and server 302 between set up " movement " network connection, thereby provide " in real time " or at least unusual " new-type " gateway for information.
Can use the Internet 410 for example to finish the foundation of the network connection between another device of mobile device 400 (via the ISP) and for example server 302 in a known way.This can comprise for example use of TCP/IP layered protocol.Mobile device 400 can utilize any number kind communication standard, for example, and CDMA, GSM, WAN etc.
Thereby, can utilize (for example) to connect via the Internet that data connect, realize via the mobile phone technology in mobile phone or the guider 200.For this connects, set up server 302 and be connected with the Internet between the guider 200.For example can connect that (it is that the high-speed data that is used for mobile device by the telecommunications operator provides connects that GPRS connects by mobile phone or other mobile device and GPRS (General Packet Radio Service); GPRS is the method that is connected to the Internet) carry out this foundation.
Arrange for the GRPS phone, the device of bluetooth enable can be in order to correctly to work with the changing frequency spectrum of mobile phone model, manufacturer etc., and for instance, model/manufacturer specific settings can be stored on the guider 200.The mode of discussing among the available previous and embodiment subsequently any one is upgraded information for this reason and the data of storing.
In the application's a embodiment, a kind of method comprises: via the modulator-demodular unit connection guider 200 is connected to server 302; From described server 302 reception information; Determine whether to meet the criterion that disconnects described modulator-demodular unit connection; And after determining to meet the criterion that disconnects described modulator-demodular unit connection, via substituting to connect described guider 200 is connected to described server 302.
In the application's a embodiment, a kind of guider 200 comprises: modulator-demodular unit 290, and it is in order to be connected to server 302 with described guider 200; Receiver 322, it is in order to from described server 302 reception information; Processor 210, it is in order to determine whether and will meet the criterion of disconnection via the connection of described modulator-demodular unit 290; And (for example substitute coupling arrangement, the blue-tooth device that is used for the mobile device connection of pairing), it is in order to being connected to described server 302 with described guider 200, and described alternative coupling arrangement is to use after processor 210 determines to meet the criterion of the connection that disconnects modulator-demodular unit 290.
In the application's a embodiment, the mobile phone technology of guider 200 self can comprise modulator-demodular unit 290, and it is inner or it is outside that it is positioned at guider 200, for example in adapter.In addition, can comprise in the guider 200 that (for example enabling for the GPRS data service) SIM card is connected to server 302 to allow modulator-demodular unit 290.When modulator-demodular unit 290 was positioned at guider 200 inside, the network data service between guider 200 and the server 302 gave record by the Mobile Network Operator of enabling (MNO).
In at least one embodiment, guider company (for example, Tom Tom (TomTom)) can serve as virtual Mobile Network Operator (VMNO), and the service that each user can be the unrestricted service in the set meal based on them (for example, subscribing) comes navigation device company to pay.For instance, if the user has subscribed domestic set meal, then data service for example can have unrestricted use (to the full extent predefined) for the guider 200 that uses modulator-demodular unit 290 and to the data, services between the SIM card of its account registration.Thereby any time after guider 200 powers up can be set up being connected between guider 200 and the server 302.
When modulator-demodular unit 290 is positioned at guider 200 outsides, network data service between guider 200 and the server 302 can be by the client's or the user's Mobile Network Operator give record, and use (for example) SIM card and the account that is not subjected to the control of guider company.In this embodiment, between guider company and Mobile Network Operator (MNO), do not have to keep accounts or use agreement to confer.
In the application's a embodiment, in case buy and opened guider 200, just can set up between modulator-demodular unit 290 and the server 302 data (for example, the Internet) connects, to permit receiving information on services from server 302, for example, about the information (for example, transport information) along the potential delay of the course of the vehicles that hold guider 200.Yet, because be connected with the data of server 302 with this automated manner foundation, so server 302 can be therefore from the information of a plurality of guiders 200 receptions about the variation of (determining in a known way) speed and position, therefore and can use data more accurately to carry out about the calculating along the potential delay of course, but carry out calculating itself usually in a known way.The information that is received by guider can include, but is not limited to LTO information, transport information, traffic camera information, cartographic information renewal or new etc.
Has only the reception that is maintained 200 pairs of any information of Shi Caike generation guider when described connection.Though via modulator-demodular unit 290 in conjunction with the connection of SIM card and transceiver 300 may than with the outside mobile device of guider 200 pairings in the bluetooth of external modem connect (because can avoid potential uncertain expense, " roaming " expense on the mobile network for example), but these wireless connections are the same with arbitrary other wireless connections can the be gone offline weak zone of zone or signal intensity or the zone of network change is arranged, these zones will make modulator-demodular unit connect lose and/or deteriorate into data message with server 302 transmit will failure degree.The inventor finds, can detect in advance or predict these regional aspect, at least one embodiment of the application provides a kind of method, and it is used for determining whether disconnecting the criterion that described modulator-demodular unit connects with meeting, and is used for via substituting to connect guider 200 being connected to server 302.
By using in guider 200 and/or it is outside (for example, in the adapter of guider 200) modulator-demodular unit 290, can be by guider 200 reception information, from server 302 emission information (the application in full, " inside " or guider modulator-demodular unit 290 can be in guider 200 and/or the modulator-demodular unit in the adapter of guider 200, described adapter for example be " vehicle-mounted " power supply adaptor (for example, see the 11/907th, No. 254 U. S. application cases, the full content of described application case is incorporated herein by reference).In one embodiment, guider 200 is once connecting and/or being connected to power supply by adapter, and guider 200 just can attempt for example using modulator-demodular unit 290 to set up the GPRS connection.Can be provided to the network connection of server 302 via being inserted into SIM card in the guider 200, thereby set up the network address for the network connection of (for example) modulator-demodular unit 290.
In Fig. 5, this SIM card and modulator-demodular unit 290 in guider 200, have been showed.Can provide SIM card to the user, (for example exchange the fixed expense of the manufacturer that for example pays guider 200 in order to subscribe transport services for, Tom Tom of guider manufacturer can confer with the Internet Service Provider of for example Waduven (Vodophone), provides the Connection Service of fixed price to permit the owner that Tom Tom is connected to guider via modulator-demodular unit 290).By acquiescence, if modulator-demodular unit 290 is in guider 200 inside, then after powering up, can enable in device modulator-demodular unit 290 all the time with the network connection of foundation with server 302, and/or if modulator-demodular unit 290 is included in the adapter of guider, then can after adapter is connected to the vehicles, enable modulator-demodular unit 290 to set up this connection.
Can be provided to the network connection of server 302 via being inserted into SIM card in the guider 200, thereby set up the network address for the network connection of (for example) modulator-demodular unit 290.In the application's a embodiment, the mobile phone technology of guider 200 self can comprise modulator-demodular unit 290, and it is positioned at guider 200 inside, or its outside, for example in adapter.In addition, can comprise in guider 200 that (for example, enabling for the GPRS data service) SIM card is connected to server 302 to allow modulator-demodular unit 290.
In one embodiment, guider 200 further comprises extra modulator-demodular unit, it is in order to determine that at processor 210 it can obtain via for example bluetooth connection by the mobile device of pairing by by the SIM card that is contained in guider 200 inside guider 200 being connected to server 302.Described two modulator-demodular units all can be the ground interconnection data and transmit particular technology, for example, and main ground data technology GSM or CDMA.For instance, internal modems 290 can be the modulator-demodular unit based on GSM/GPRS, and it allows the access to the special frequency band of ground data transport network.Guider manufacturer can provide based on geographic position and other commerce and non-commercial criterion determining signal frequency.In addition, for instance, internal modems 290 can be the modulator-demodular unit based on CDMA/1X, thereby allows the access to the special frequency band of ground data transport network.Guider manufacturer can provide based on geographic position and other commerce and non-commercial criterion determining signal frequency.
Connect (in guider 200 inner and outside two kinds of situations) by inserting a plurality of modulator-demodular units, guider 200 can allow the multiple access to more alternative special frequency bands of ground data transport network.Guider manufacturer can provide internal default modulator-demodular unit 290, and can permit inserting based on geographic position and other commerce and/or non-commercial criterion the outside of signal frequency is determined, and use the right of priority sequencing that uses with respect to external modem for internal modems.In addition, processor 210 can determine that a tabulation, described tabulation contain the right of priority sequencing that use is used with respect to external modem for internal modems that detailed manufacturer provides in order to the SIM card that is contained in guider 200 inside via (for example).This tabulation can contain the default reference rule that the managing internal modulator-demodular unit switches to external modem.
When modulator-demodular unit 290 was positioned at guider 200 inside, the network data service between guider 200 and the server 302 gave record by the Mobile Network Operator of enabling (MNO).Use for inside, guider 200 users can use by for example installing the specific SIM card that manufacturer provides.This SIM card can use ANTI-THEFT (anti-usurp) technology to guarantee: the user only can use the SIM card that is provided by manufacturer in guider 200, and the user can not use the SIM card that provides in other has the device of GPRS function.Under these two kinds of situations, have only the manufacturer of associating that guider 200 is provided, and the SIM card that provides of manufacturer can connect through combination with the communication channel via modulator-demodular unit 290 that is formed into server 290, but this is predefined IP channel.
In this embodiment, virtual Mobile Network Operator (VMNO) can serve as in guider manufacturer (for example Tom Tom), and each user can receive that brand is Tom Tom's SIM card, and described card contains additional code and ANTI-THEFT uses initiating sequence for the first time.In addition, this SIM card can contain the Mobile Network Operator (MNO) of permission and the tabulation of priority order thereof.The network selection that this order can determine preferred network to use and give tacit consent to.
What also can comprise in this SIM card is possible of an independent tabulation, and what described tabulation contained that detailed manufacturer provides uses the right of priority sequencing that uses with respect to external modem to internal modems.The default reference tabulation that this tabulation then can be management and internal modems switches the rule that is associated to external modem.
Therefore, at least one embodiment, guider 200 comprises modulator-demodular unit 290, and it is in order to via the SIM card that is contained in guider 200 inside, and transmits particular technology via the ground interconnection data, and guider 200 is connected to server 302.In at least one embodiment, internal modems 290 is the modulator-demodular unit based on GSM/GPRS, thereby allows the access to the special frequency band of ground data transport network.In at least one other embodiment, internal modems 290 is the modulator-demodular unit based on CDMA/1X, thereby allows the access to the special frequency band of ground data transport network.In arbitrary embodiment, guider manufacturer can provide based on geographic position and other commerce and/or non-commercial criterion determining signal frequency.
When modulator-demodular unit 290 (for example is positioned at guider 200 outsides, in the independent mobile device that matches with guider 200 connecting via for example bluetooth) time, network data service between guider 200 and server 302 can be the function of user or client's Mobile Network Operator (MNO), and can use the SIM card of the account that is not subjected to the control of guider manufacturer.In this embodiment, between guider manufacturer and Mobile Network Operator (MNO), can there be pre-determining network or modulator-demodular unit, precedence type.
Switch to external modem about internal modems, the right of priority sequencing that internal modems 290 is used with respect to external modem 290 that processor 210 can determine that a tabulation, described tabulation contain that detailed for example manufacturer provides via the SIM card that is contained in guider 200 inside.This tabulation can contain the default reference rule that the managing internal modulator-demodular unit switches to external modem.
In at least one embodiment, determine that in the internal calculation of processor 210 network change (for example will take place, the network coverage preset signals below horizontal/maybe will to drop to preset signals below horizontal, and/or internal network is served end on the horizon and will be taken place) after, can between internal default network connection and (for example, connecting via mobile phone/bluetooth) outside two grade network connect, carry out and switch.For example the data of closing between guider 200 and the server 302 via internal modems 290 by power-down sequence transmit information, and for example come initial new connection via the modulator-demodular unit of the adapter that is connected to guider and/or via the data communication of wireless protocols such as for example bluetooth or by for example direct connection via the modulator-demodular unit in the secondary adapter.In this embodiment, modulator-demodular unit 290 can with transceiver 300 cooperative operation, to permit data message with the network area covering of determining external modem (for example, connecting via mobile phone/bluetooth) at processor 210 and transmit back transmission information between guider 200 and server 302.
In this embodiment, the information of launching between guider 200 and server 302 in the initial start sequence can be given tacit consent in internal modems 290 and therefore give tacit consent in internal modems network type and covering.When internal modems 290 does not provide covering, or when network change on the horizon will be when programme path takes place, so guider 200 switches to external modem with default modem.
Can provide SIM card to the user, exchange for pay the manufacturer of guider 200 in order to subscribe (for example) transport services fixed expense (for example, Tom Tom of guider manufacturer can confer with Internet Service Provider such as for example Waduven, provides the Connection Service of fixed price to permit the owner that Tom Tom is connected to guider via modulator-demodular unit 290).In this conferred, for example manufacturer such as Tom Tom can utilize the economic scale that has the purchasing power bigger than individuality in simple terms, and can realize the constraint of cost optimization network system.As the technical attributes of guider to server activity; Manufacturer can reduce the cost that is associated of internal data use and described activity.
For instance, block size rounds off (Block Size rounding), group data converges whole (Group Data Pooling) and session phase and condition and can all be encoded into the rule that the managing internal modulator-demodular unit uses.By acquiescence, if modulator-demodular unit 290 is in guider 200 inside, then can after described device powers up, enable modulator-demodular unit 290 all the time and set up network connection with server 302, and/or if modulator-demodular unit 290 is included in the adapter of guider 200, then can after adapter is connected to the vehicles, enable modulator-demodular unit 290 and set up this connection.
In the application's a embodiment, can be periodically by server 302 emissions and received about traffic and/or information along the potential delay of the course of the vehicles by guider 200 subsequently, and/or the user may subscribe any other network information on services that will receive.The periodicity of this information receives and can be for example every three minutes.Can come sending/receiving information via modulator-demodular unit 290 and transceiver 300, wherein with the IP address of packet sending/receiving to modulator-demodular unit 290.Can be for example both are dual integrated with modulator-demodular unit 290 for GPS and GPRS.By for example setting up constant connection between guider 200 and the server 302 via modulator-demodular unit 290, with about the identical or different time of the reception of the traffic of potential delay or out of Memory, information the information of the variation of the position of the vehicles and speed (for example about) can be transmitted into server 302 from guider 200.
In addition, not only can come this information of sending/receiving via the modulator-demodular unit 290 of guider, and, at least one embodiment, can use to substitute to connect.For instance, Fig. 6 illustrates the method for the application's a embodiment.In S600, the method for the application's a embodiment comprises that connecting (for example, use modulator-demodular unit 290, its can be in guider 200, in the adapter of guider 200 etc.) via modulator-demodular unit is connected to server 302 with guider 200.Thereafter, in S610, from server 302 reception information, it includes, but is not limited to user may contract the traffic that will receive or any other service subscription information, LTO fileinfo (powering up back faster determining the position of guider 200 in order to enable at device), cartographic information etc.
In the operating period of guider 200, in S620, processor 210 determines whether to disconnect the criterion that modulator-demodular unit connects with meeting.For instance, can periodic intervals carrying out this determines.For instance, but processor 210 monitoring network signal strength informations to determine whether signal intensity drops to the good data of keeping via modulator-demodular unit 290 and connect below the needed threshold level.Perhaps, by processor 210 carry out to whether meeting determining to comprise to use and comprising or be embedded in network coverage information in the cartographic information of guider 200 of criterion.
In the application's a embodiment, about comprising or being embedded in network coverage information in the cartographic information of guider 200, the network coverage and type of service information can be stored as (for example) map supplier map attribute.For instance, these attributes can be similar to current navigation map attribute, and are stored as geographical relevant area data as the part of (for example) map datum (attribute) database in (for example) storer 230.These data can be by map supplier supply (TeleAtlas, NAVTEQ etc.), by the 3rd side supply (POI, map datum supplier) or by manufacturer's supply formula (Tom Tom, my trip (Garmin) etc.).
As in the current embodiment, the data of map supplier supply can be included in the already present body release, and can follow for example current per season release cycle of being followed by all quality map suppliers that mainly navigate.By standard, for particular navigation device and/or manufacturer, extendible and adjust this data.In addition, as in the current embodiment, for example, published the navigation map product of per season release cycle the map supplier after, the data that can add the supply of the 3rd side and manufacturer.Can at first accumulate this data, then put these data in order, and transmit this data with the map attribute format, and these data and navigation map data are made up to form complete data set when expanding and being adjusted to particular navigation device and/or manufacturer's level.
In this embodiment, described two kinds of situations all allow the renewal in per season, and allow the user of guider 200 to upgrade its map datum by using current over-the-air updating method, and/or allow for example when device is docked to home computer via family expenses to joint chair, to upgrade.
Thereafter, in S630, after processor 210 was determined to meet the criterion that disconnects the modulator-demodular unit connection, processor 210 can instruct and via substituting to connect guider 200 is connected to server 302, for example, via being connected with the bluetooth of the mobile phone of guider 200 pairing.
In addition, in at least one embodiment, described method can further comprise via modulator-demodular unit 290 and substitute and connect in (for example, bluetooth connects) at least one and information is downloaded to guider 200 at least and/or information is uploaded in the server 302 at least.The information that is used for uploading at least and download at least can comprise at least one of LTO information, transport information, cartographic information etc.Processor 210 can then calculate the best modulator-demodular unit alternate item along route, and can plan in advance that modulator-demodular unit switches, and transmits and/or final user's cost/availability functionality thereby optimize network data.In this embodiment, (for example determine (for example) default modem 290 at processor 210, internal modems 290) after network area covers and will permit the data message transmission, modulator-demodular unit 290 can and transceiver 300 cooperative operation with transmission information between guider 200 and server 302.
In the S620 that as above explains, processor 210 determines whether to disconnect the criterion that modulator-demodular unit connects with meeting.In other words, processor 210 pre-determines modulator-demodular unit and connects and when will fail, and therefore determines when to switch to and substitute but less-than-ideal alternative connection will be better.
In guider 200, can be by (for example) processor 210 at least based on want destination (for example, destination by the user of guider 200 input) and the current location of the vehicles (for example, the position of being determined by the GPS/GPRS receivers in the guider 200) determine the course of the vehicles.Thereafter, receiving about after the information of the potential delay of the course of the vehicles, the processors 210 in the guider 200 can be determined the course of modification based on the information that receives.This route information can further be used for determining whether disconnecting the criterion that modulator-demodular unit connects with meeting by processor 210.
In at least one embodiment, the information of launching can be used in the routine operation of guider 200, and/maybe can assess other rule with some activity between restriction or restriction service device 302 and the guider 200.For instance, when (for example using, the mobile phone of pairing) during external modem, the additional networks that use may be won the internal modems 290 that exceeds guider 200 covers, but for data transmit cost structure may and/higher probably.Thereby modulator-demodular unit 290 is after the switching of the external modem of the mobile device of (for example) pairing internally having taken place, and the user of guider 200 may not want to download or transmit higher Data Elements, and for example, map upgrades or the position history file.In addition, the identity of guider 200 and set vehicles purposes and user type can be used to also determine that the QOS that is associated arranges, thereby make these movable relevant with quality/pricing (being [data access/network data cost] specifically).QOS follows category can be used for determining mathematical activity sequence and availability by processor 210.
In at least one embodiment, satellite position can be used to further determine the information of launching and reduce along the network interruption of the course of the vehicles.The GPS chipset calculates and can make guider 200 can determine network availability that plan and/or expection, and thereby can switch to plan download based on the expection modulator-demodular unit between internal modems 290 and (for example Pei Dui guider 200) external modem.This can be the function of for example adding the navigation map attribute, and wherein the layer of navigation map data can contain the information relevant for the geographical availability of the ground data network that allows (at least one embodiment, being Mobile Network Operator specifically).
Processor 210 then can calculate the best modulator-demodular unit alternate item along route, and can plan in advance that modulator-demodular unit switches, and transmits and/or final user's cost/availability functionality thereby optimize network data.As a limiting examples, can use simple rule-based management system to carry out this operation, guider 200 can be in the duration of extend past internal modems overlay area, in the network coverage of internal modems 290, from server 302 request (for example) LTO files.The variation that this then can allow for example following cost/availability to optimize: LTO file request frequency, LTO file size, and the geographical covering of LTO file.In addition, if the user of guider 290 is current in Holland, and import one to Hispanic route, then guider 200 reply Holland districts ask short LTO, and the view network (for example covers parameter, cost, to the degree of approach of network change etc.) and decide the file that guider 200 can be long to Spain's district's request.Therefore guider 200 can manage the LTO file, reduces to minimum network data cost, and optimizes TtFF (primary positioning time) and calculate, and can advance exactly based on the information that receives.
In at least one embodiment, can be in the type of device of determining guider 200 (for example, being used for for example guider 200 of commerce, consumer's (vehicles), motor and/or pedestrian's purposes) back emission information.Internal modems 290 covers and may extend into known point.For example as the part of map supplier navigation map attribute, the specific user of guider 200 may want this point of described function extend past.For example, commercial user and the owner thereof may to want on the ground data overlay area extended position to follow the trail of (Track and Trace) functional.In addition, if the user of guider 200 is in multi-network environment, the setting of QOS file then may be arranged, described setting then arranges internal modems to the use standard of external modem behavior based on the type of service classification of guider 200, and then can use the data that obtain from guider 200, utilization is determined modulator-demodular unit behavior and desired location tracking availability because of accuracy and predictive method that the availability that increases strengthens.
In addition, in at least one embodiment, in case having set up guider 200 is connected with network interface protocols [1022] between the server 302, just identify described connection as the part of described agreement with for example modulator-demodular unit 290 and network transmission type, guider 200 can be through adjusting to be fit to the criterion of connection type best to modem data transmission activity.
In at least one embodiment of the application, the method for at least one embodiment of above expression can be embodied as guider 200.In the application's a embodiment, guider 200 comprises: modulator-demodular unit 290, and it is in order to be connected to server 302 with described guider 200; Receiver 320, it is in order to from server 200 reception information; Processor 210, it is in order to determine whether and will meet the criterion of disconnection via the connection of modulator-demodular unit 290; And substituting coupling arrangement, it after described processor 200 is determined to meet the criterion of the described connection that disconnects described modulator-demodular unit 290, uses described alternative coupling arrangement in order to described guider 200 is connected to described server 302.Modulator-demodular unit 290 can be in guider 200 and/or the modulator-demodular unit in the adapter of guider 200.Alternative coupling arrangement can comprise the bluetooth coupling arrangement for the external modem of the mobile device that is connected to (for example) pairing.
Further, the form of any one the be presented as program in the preceding method.Program can be stored on the computer-readable media and when when computer installation (device that comprises processor) moves, be suitable for carrying out in the preceding method any one.Therefore, medium or computer-readable media are suitable for storage information and are suitable for data processing facility or computer installation alternately to carry out any one the method among the embodiment referred to above.
The removable formula medium that medium can be the built-in medium that is installed on the computer installation body interior or is arranged to separate with the computer installation main body.The example of built-in medium includes, but is not limited to rewritable nonvolatile memory (for example ROM and flash memory) and hard disk.The example of removable formula medium includes, but is not limited to: optic storage medium, for example CD-ROM and DVD; Magneto-optic storage media, for example MO; Magnetic storage media includes, but is not limited to floppy disk (trade mark), magnetic tape cassette and removable formula hard disk; Have the medium of in-building type rewritable nonvolatile memory, include, but is not limited to storage card; And the medium with in-building type ROM, include, but is not limited to the ROM magnetic tape cassette; Deng.In addition, can any other form store about the various information (for example, characteristic information) of institute's memory image, or it can otherwise provide.
To understand after reading this disclosure as the those skilled in the art, the assembly of the electronic package of guider 200 and/or server 302 can be presented as hardware circuitry or be presented as computer-readable program, perhaps is presented as described both combination.
The system and method for the application's embodiment is included on the processor operation to carry out according at least one the software in the method for the application's teaching.The those skilled in the art will understand after reading and understanding the present invention and can start software program to carry out the mode of the function that is found in the described software program by the computer-readable media from the computer based system.The those skilled in the art will further understand and can be used for creating through design to implement and to carry out at least one the various programming languages of software program in the application's the method.
Can use the described program of object-oriented language (including but not limited to JAVA, Smalltalk, C++ etc.) object-oriented ground structure, but and service routine language (including but not limited to COBOL, C etc.) towards the described program of program ground structure.Component software can the well-known any number kind mode of those skilled in the art be communicated by letter, and it includes, but is not limited to by application programming interfaces (API), inter-process communication techniques (include but not limited to report program call (RPC), public object request broker program structure (CORBA), The Component Object Model (COM), Distributed Component Object Model (DCOM) (DCOM), Distributed System Object Model (DSOM) and remote method invocation (RMI) (RMI)).Yet, will understand after reading present application disclosure as the those skilled in the art, the application's teaching is not limited to certain programmed language or environment.
Wait by way of example but not described above system, device and method with ways to restrain with respect to guider 200 being improved accuracy, processor speed and user interactions simplification.
In addition, in the scope of this disclosure and appended claims, but the element of different instances embodiment and/or feature combination with one another and/or substitute each other.
Further, the form of any one be presented as equipment, method, system, computer program and the computer program in above-mentioned and other example features of the present invention.For instance, preceding method can be presented as the form of system or device, and it includes, but is not limited to for any structure of carrying out graphic illustrated method.
So described example embodiments, it is evident that to make its variation in many ways.Described variation should be considered as breaking away from spirit of the present invention and scope, and all described modifications that it will be apparent to those skilled in the art that are wished all to be included in the scope of appended claims.
Claims (19)
1. the method that connects of a handover network, it comprises following steps:
Via the modulator-demodular unit connection guider is connected to server;
Receive information from described server;
Determine whether to meet the criterion that disconnects described modulator-demodular unit connection; And
After determining to meet the criterion that disconnects described modulator-demodular unit connection, via substituting to connect described guider is connected to described server;
Wherein determine to comprise and determine in the following at least one whether meeting disconnect criterion that described modulator-demodular unit connects described: network change will take place, the network coverage will drop to threshold level following, and the end of the network service of the described modulator-demodular unit of described guider coming.
2. method according to claim 1 wherein determines to comprise that to whether meeting the described of criterion use is with the included network coverage information of the cartographic information of described guider.
3. according to the described method of arbitrary aforementioned claim, wherein to whether will meet criterion described determine to comprise use network signal intensity information to be lower than threshold level.
4. method according to claim 1 and 2, it further comprises: at least one via described modulator-demodular unit and in substitute connecting downloads to information described guider and information uploaded in the described server at least one, and described information comprises at least one in LTO information, guider type or classification, transport information and the cartographic information.
5. method according to claim 1 and 2 wherein is connected to described server via among GSM and the CDMA at least one with described guider.
6. method according to claim 1 and 2 wherein saidly determines to comprise assessment default reference rule, and described rule is being arranged at described server and switched connection with the described modulator-demodular unit of described guider and between one in described alternative the connection.
7. method according to claim 1 wherein is connected to described server with described guider and comprises that connecting the alternate network that switches to via at the modulator-demodular unit of described guider outside from the modulator-demodular unit of the described modulator-demodular unit of described guider connects via substituting to connect.
8. method according to claim 1 and 2, it further comprises: after determining to meet the criterion that disconnects described modulator-demodular unit connection, the power-down sequence of the described modulator-demodular unit by described guider is closed described modulator-demodular unit and is connected, and comes initially describedly via described alternative connection described guider to be connected to described server via the modulator-demodular unit of described guider outside thereafter.
9. method according to claim 8, wherein said alternative connection comprise that bluetooth connects, and it is in order to be connected to described guider the modulator-demodular unit of the device of described guider outside.
10. method according to claim 7, it further comprises: cover in the network area of the described modulator-demodular unit of the described device of determining described guider outside and permit transmitting data after data transmit between described guider and described server.
11. method according to claim 10, wherein initial described modulator-demodular unit via described guider transmits data between described guider and described server, and after the described modulator-demodular unit of determining described guider does not provide the network area to cover and determines network change at least one in will taking place, data are transmitted switch to described alternative connection.
12. method according to claim 1 and 2 wherein determines to comprise that to whether meeting disconnect criterion that described modulator-demodular unit connects described the satellite position that uses described guider reduces along the network interruption of the course of the vehicles at described guider place.
13. method according to claim 1 and 2 wherein saidly determines to comprise that calculating selects along the modulator-demodular unit of route, and is included in described modulator-demodular unit and disconnects and substitute and plan that modulator-demodular unit connects before connecting and switch.
14. method according to claim 10, wherein the described information of launching from described guider can be used to determine the classification type of described guider, and described classification is at least one in commercial use, consumer use, motorcycle purposes and the pedestrian's purposes.
15. method according to claim 14 is wherein adjusted data transmission activity based on the described classification type of described guider.
16. a guider, it is suitable for carrying out according in the described method of claim 1 to 15 any one, and comprises at least:
Modulator-demodular unit, it is in order to be connected to server with described guider;
Receiver, it is in order to receive information from described server;
Processor, it is in order to determine whether and will meet the criterion of disconnection via the described connection of described modulator-demodular unit; And
Substitute coupling arrangement, it is in order to being connected to described server with described guider, determines to meet the described alternative coupling arrangement of use after the criterion of the described connection that disconnects described modulator-demodular unit at described processor;
Wherein determine to comprise and determine in the following at least one whether meeting disconnect criterion that described modulator-demodular unit connects described: network change will take place, the network coverage will drop to threshold level following, and the end of the network service of the described modulator-demodular unit of described guider coming.
17. guider according to claim 16, wherein said modulator-demodular unit are in following at least one:
Modulator-demodular unit in the described guider,
The adapter of described guider maybe can be connected to the interior modulator-demodular unit of adapter of described guider.
18. guider according to claim 16, wherein said alternative coupling arrangement comprise that described bluetooth connects in order to described guider is connected to the modulator-demodular unit of the device of described guider outside be used to setting up the device that bluetooth connects.
19. guider according to claim 16, it further comprises: transceiver, it downloads to described guider in order to via described modulator-demodular unit and in substitute connecting at least one at least with information and/or information is uploaded in the described server at least.
Applications Claiming Priority (9)
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| US60/879,543 | 2007-01-10 | ||
| PCT/EP2008/000188 WO2008083985A1 (en) | 2007-01-10 | 2008-01-09 | A navigation device and method for providing alternative network connections |
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| CNA2008800018154A Pending CN101578639A (en) | 2007-01-10 | 2008-01-09 | A navigation device and method for enhancing traffic data |
| CNA2008800018370A Pending CN101578499A (en) | 2007-01-10 | 2008-01-09 | A navigation device and method for determining network coverage |
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| WO2019245375A1 (en) * | 2018-06-18 | 2019-12-26 | Ellertsen Roger Andre | A road traffic navigation system |
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| US6253122B1 (en) * | 1999-06-14 | 2001-06-26 | Sun Microsystems, Inc. | Software upgradable dashboard |
| CN1823497A (en) * | 2003-02-24 | 2006-08-23 | 高通股份有限公司 | Wireless local access network system detection and selection |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6253122B1 (en) * | 1999-06-14 | 2001-06-26 | Sun Microsystems, Inc. | Software upgradable dashboard |
| CN1823497A (en) * | 2003-02-24 | 2006-08-23 | 高通股份有限公司 | Wireless local access network system detection and selection |
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| CN101578498A (en) | 2009-11-11 |
| CN101578499A (en) | 2009-11-11 |
| CN101578639A (en) | 2009-11-11 |
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