CN101294816A - Positioning system with switching function and its implementing method - Google Patents
Positioning system with switching function and its implementing method Download PDFInfo
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- CN101294816A CN101294816A CNA200710027771XA CN200710027771A CN101294816A CN 101294816 A CN101294816 A CN 101294816A CN A200710027771X A CNA200710027771X A CN A200710027771XA CN 200710027771 A CN200710027771 A CN 200710027771A CN 101294816 A CN101294816 A CN 101294816A
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Abstract
The invention discloses a positioning system with a switching function, which comprises a positioning information receiving module, a radio signal receiving module, a transmission interface and a switching module. The positioning information receiving module is used for receiving a positioning message; the radio signal receiving module is used for receiving a radio signal; the transmission interface is connected with the CPU of a positioning device; the switching module is connected with the transmission interface and receives a control signal so as to selectively switch to a first state or a second state; when the switching module is in the first state, the transmission interface, via the switching module, receives the positioning message through the positioning message receiving module; when the switching module is in the second state, the transmission interface, via the switching module, receives the radio signal through the radio signal receiving model.
Description
Technical field
The invention provides a kind of positioning system and handoff functionality implementation method thereof, particularly a kind ofly make locating information receiver module and wireless signal receiver module can share the switched system of one group of asynchronous system serial line interface by commutation circuit with handoff functionality.
Background technology
In recent years because the popularizing of GPS, more and more many navigation softwares attempt utilizing variety of way to promote the fiduciary level of navigation, distance planning, similarly be traffic message channel (Traffic Message Channel, TMC) etc., be the system that transport information is provided, but it must receive the information that the radio station broadcasts out by special hardware.Known way, be that one group of asynchronous system serial line interface (UniversalAsynchronous Receiver Transmitter additionally is provided, UART) transmit data for the traffic message channel, see also Fig. 1, calcspar for prior art locating device data transmission, its central processing unit 11 links one first asynchronous system serial line interface 12 and one second asynchronous system serial line interface 13, wherein first Asynchronous Serial Interface 12 provides GPS module 14, in order to transmission locating information 141, the second asynchronous system serial line interface 13 provides traffic message channel module 15, in order to transmission transport information 151, but the asynchronous system serial line interface of locating device limited (generally having only three groups), if also have other system must use the asynchronous system serial line interface on the device, just situation about using can take place not apply.
Therefore, do not apply the problem of using for solving the asynchronous system serial line interface, known patent has proposed a solution, in European patent notification number EP1347428, disclosed a kind of handheld PC device in conjunction with end device, see also Fig. 2, show the calcspar of known handheld PC computer apparatus in conjunction with end device, this handheld PC device 20 comprises user's interface 22, a central processing unit 11, at least one internal memory 21 and at least one hardware interface 24.Central processing unit 11 is by a single face 251 connecting terminal devices 25, this end device 25 has at least two hardware interfaces 24, and by an arithmetic element 252 these a little hardware interfaces 24 of control, the transport information stream 27 that transmitted in order to receive traffic message channel module 15 of a hardware interface 24 wherein, the locating information stream 28 that another hardware interface 24 is transmitted in order to receiving world locational system module 14, arithmetic element 252 is combined into unique sequence information flow 26 with transport information stream 27 and locating information stream 28, via the single face 251 of end device 25 and the hardware interface 24 of handheld PC device 20 this unique sequence information flow 26 is sent to handheld PC device 20, by the translator 231 that is read into region of memory 23 this unique sequence information flow 26 is deciphered then, this unique sequence information flow 26 is decoded as original transport information stream 27 and locating information stream 28, transfers to the application program of handheld PC device 20 again and further handle.
Yet, for the traffic message channel module, it only can upgrade once at set intervals, for navigation software, neither every section the time transport information that all needs the traffic message channel module to be provided, though, can cause the waste on the handheld PC device power management so known way can increase the availability of hardware interface.The inventor is based on going in for the study for many years and many practical experience, inquires into special topic through research and design in many ways, then proposes a kind of positioning system and handoff functionality implementation method thereof with handoff functionality in the present invention, with as foregoing problems one settling mode and foundation.
Summary of the invention
Because above-mentioned problem, the object of the present invention is to provide a kind of positioning system and handoff functionality implementation method thereof, particularly a kind ofly make locating information receiver module and wireless signal receiver module can share the switched system and the method for one group of asynchronous system serial line interface by commutation circuit with handoff functionality.
For reaching above-mentioned purpose, the invention provides a kind of positioning system with handoff functionality, it comprises a location information receiving module, a wireless signal receiver module, a transmission interface and all die change pieces.The locating information receiver module is in order to receive a location information, the wireless signal receiver module is in order to receive a wireless signal, transmission interface links the central processing unit of locating device, handover module links transmission interface, and receive a controlling signal, switch to one first state or one second state with selectivity, handover module is when first state, make transmission interface pass through handover module, receive locating information by the locating information receiver module, handover module makes transmission interface pass through handover module when second state, receives wireless signal by the wireless signal receiver module.
From the above, positioning system and handoff functionality implementation method thereof with handoff functionality of the present invention, locating information receiver module and wireless signal receiver module are done an integration, by the hardware commutation circuit, reach the purpose that only need take one group of asynchronous system serial line interface, and can make more efficient power management for the wireless signal receiver module.
Further understand and understanding for making technical characterictic of the present invention and the effect reached had, hereinafter sincerely provide preferred embodiment and correlative type to think the usefulness of assisting a ruler in governing a country, and with detailed comment cooperate explanation as after.
Description of drawings
Fig. 1 is the calcspar of prior art locating device data transmission.
Fig. 2 is the calcspar of prior art in conjunction with the handheld PC device of end device.
Fig. 3 is the calcspar with positioning system of handoff functionality of the present invention.
Fig. 4 is the calcspar of the preferred embodiment of the positioning system with handoff functionality of the present invention.
Fig. 5 is the flow chart of steps of the handoff functionality implementation method of positioning system of the present invention.
Fig. 6 is the flow chart of steps of preferred embodiment of the handoff functionality implementation method of positioning system of the present invention.
Embodiment
Hereinafter with reference to correlative type, interface switch system and method according to the locating device of preferred embodiment of the present invention are described, wherein identical assembly will be illustrated with identical reference marks.
See also Fig. 3, be the calcspar with positioning system of handoff functionality of the present invention, it comprises a location information receiving module 34, a wireless signal receiver module 35, a transmission interface 31 and all die change pieces 32.Locating information receiver module 34 is in order to receive a location information 141, wireless signal receiver module 35 is in order to receive a wireless signal 151, transmission interface 31 links one of locating device central processing unit 11, handover module 32 links transmission interface 31, and receive a controlling signal 33, switch to one first state 321 or one second state 322 with selectivity, handover module 32 is when first state 321, make transmission interface 31 by handover module 32, receive locating information 141 by locating information receiver module 34, handover module 32 makes transmission interface 31 by handover module 32 when second state 322, receives wireless signal 151 by wireless signal receiver module 35.
Above-mentioned locating information receiver module is a GPS module (Global PositioningSystem, GPS), above-mentioned wireless signal receiver module is a transport information receiver module preferably, this transport information receiver module is preferably by a traffic message channel (Traffic Message Channel, TMC), a radio data system (Radio Data System, RDS) or a digital audio broadcasting (Digital AudioBroadcasting is DAB) with receiving traffic information.Above-mentioned transmission interface is an asynchronous system serial line interface (Universal Asynchronous Receiver Transmitter preferably, UART), above-mentioned positioning system more comprises a control module, in order to send controlling signal, and the electric power starting of control wireless signal receiver module or close, the preferably general input and output of positioning system central processing unit of this control module (general-purpose I/O port, GPIO).
See also Fig. 4, be the calcspar of the preferred embodiment of the positioning system with handoff functionality of the present invention, it comprises central processing unit 11, general input and output 41, asynchronous system serial line interface 42, commutation circuit 43, GPS module 14 and traffic message channel module 15.GPS module 14 is in order to receive the locating information 141 from satellite, traffic message channel module 15 is in order to receive the transport information 151 that broadcast in the radio station, asynchronous system serial line interface 42 links the central processing unit 11 of locating device, commutation circuit 43 links asynchronous system serial line interface 42, and have one first state 321 and one second state 322, commutation circuit 43 is when first state 321, make asynchronous system serial line interface 42 receive locating information 141 by GPS module 14, when second state 322, make asynchronous system serial line interface 42 by traffic message channel module 15 receiving traffic informations 151, general input and output 41 are built and are placed central processing unit 11, switch to first state 321 or second state 322 in order to control commutation circuit 43, and the electric power starting of may command traffic message channel module 15 or close.
See also Fig. 5, be the flow chart of steps of the handoff functionality implementation method of positioning system of the present invention, its step is as the back:
Step S51: start an application program;
Step S52: open a transmission interface;
Step S53: initialization locating information receiver module;
Step S54: by a controlling signal, all die change pieces are switched to one first state, make this transmission interface, receive a location information from this locating information receiver module by this handover module; And
Step S55: when this application program is sent information requirements, then, handover module is switched to second state, and start the power supply of wireless signal receiver module by controlling signal, make transmission interface pass through handover module, receive wireless signal from the wireless signal receiver module.
Above-mentioned application program is a Navigator preferably, above-mentioned locating information receiver module is a GPS module, above-mentioned wireless signal receiver module is a transport information receiver module preferably, and this transport information receiver module preferably passes through a traffic message channel, a radio data system or a digital audio broadcasting with receiving traffic information.Above-mentioned transmission interface is an asynchronous system serial line interface preferably, above-mentioned positioning system more comprises a control module, in order to sending controlling signal, and the electric power starting of control wireless signal receiver module or close, this control module is the general input and output of positioning system central processing unit preferably.
See also Fig. 6, be the flow chart of steps of the preferred embodiment of the handoff functionality implementation method of positioning system of the present invention, its step is as the back:
Step S61: start a Navigator;
Step S62: open an asynchronous system serial line interface;
Step S63: initialization GPS module;
Step S64: the general input and output by central processing unit, commutation circuit is switched to first state, make the asynchronous system serial line interface receive locating information by GPS module; And
Step S65: when Navigator sends a transport information requirement, then pass through the general input and output of central processing unit, commutation circuit is switched to second state, and start the power supply of traffic message channel module, make the asynchronous system serial line interface by traffic message channel module receiving traffic information.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the claim its equivalent modifications of carrying out or change.
Claims (19)
1, a kind of positioning system with handoff functionality is characterized in that, comprises at least:
One location information receiving module is in order to receive a location information;
One wireless signal receiver module is in order to receive a wireless signal;
One transmission interface links a central processing unit of this locating device; And
All die change pieces, link this transmission interface, and receive a controlling signal, switch to one first state or one second state with selectivity, this handover module makes this transmission interface by this handover module when this first state, receive this locating information from this locating information receiver module, this handover module makes this transmission interface by this handover module when this second state, receives this wireless signal from this wireless signal receiver module.
2, the positioning system with handoff functionality according to claim 1 is characterized in that: this wireless signal receiver module is a transport information receiver module, in order to receive the transport information of station broadcast.
3, the positioning system with handoff functionality according to claim 1 is characterized in that: this locating information receiver module be a GPS module (G1obal Positioning System, GPS).
4, the positioning system with handoff functionality according to claim 2 is characterized in that: (Traffic Message Channel is TMC) to receive this transport information by a traffic message channel for this transport information receiver module.
5, the positioning system with handoff functionality according to claim 2 is characterized in that: (Radio Data System is RDS) to receive this transport information by a radio data system for this transport information receiver module.
6, the positioning system with handoff functionality according to claim 2 is characterized in that: (Digital Audio Broadcasting is DAB) to receive this transport information by a digital audio broadcasting for this transport information receiver module.
7, the positioning system with handoff functionality according to claim 1 is characterized in that: this transmission interface be an asynchronous system serial line interface (Universal Asynchronous Receiver Transmitter, UART).
8, the positioning system with handoff functionality according to claim 1, it is characterized in that: this positioning system also comprises a control module, in order to sending this controlling signal, and controls the electric power starting of this wireless signal receiver module or closes.
9, the positioning system with handoff functionality according to claim 8 is characterized in that: this control module for the general input and output of this positioning system central processing unit (general-purpose I/O port, GPIO).
10, a kind of handoff functionality implementation method of positioning system is characterized in that, comprises at least:
Start an application program;
Open a transmission interface;
Initialization locating information receiver module;
By a controlling signal, all die change pieces are switched to one first state, make this transmission interface by this handover module, receive a location information from this locating information receiver module; And
When this application program is sent information requirements, then, this handover module is switched to one second state, and start the power supply of this wireless signal receiver module by this controlling signal, make this transmission interface by this handover module, receive wireless signal from this wireless signal receiver module.
11, the handoff functionality implementation method of positioning system according to claim 10 is characterized in that: this wireless signal receiver module is a transport information receiver module, in order to receive the transport information of station broadcast.
12, the handoff functionality implementation method of positioning system according to claim 10 is characterized in that: this application program is a Navigator.
13, the handoff functionality implementation method of positioning system according to claim 10 is characterized in that: this locating information receiver module is a GPS module.
14, the handoff functionality implementation method of positioning system according to claim 11 is characterized in that: this transport information receiver module by a traffic message channel to receive this transport information.
15, the handoff functionality implementation method of positioning system according to claim 11 is characterized in that: this transport information receiver module by a radio data system to receive this transport information.
16, the handoff functionality implementation method of positioning system according to claim 11 is characterized in that: this transport information receiver module by a digital audio broadcasting to receive this transport information.
17, the handoff functionality implementation method of positioning system according to claim 10 is characterized in that: this transmission interface is an asynchronous system serial line interface.
18, the handoff functionality implementation method of positioning system according to claim 10 is characterized in that: also comprising provides a control module, in order to sending this controlling signal, and controls the electric power starting of this wireless signal receiver module or closes.
19, the handoff functionality implementation method of positioning system according to claim 18 is characterized in that: this control module is the general input and output of this locating device central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710027771XA CN101294816A (en) | 2007-04-28 | 2007-04-28 | Positioning system with switching function and its implementing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200710027771XA CN101294816A (en) | 2007-04-28 | 2007-04-28 | Positioning system with switching function and its implementing method |
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| CN101294816A true CN101294816A (en) | 2008-10-29 |
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| CNA200710027771XA Pending CN101294816A (en) | 2007-04-28 | 2007-04-28 | Positioning system with switching function and its implementing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI471121B (en) * | 2011-11-24 | 2015-02-01 | ||
| CN114003046A (en) * | 2021-12-30 | 2022-02-01 | 智道网联科技(北京)有限公司 | Positioning circuit supporting debugging, debugging control method, electronic device and vehicle |
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2007
- 2007-04-28 CN CNA200710027771XA patent/CN101294816A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI471121B (en) * | 2011-11-24 | 2015-02-01 | ||
| CN114003046A (en) * | 2021-12-30 | 2022-02-01 | 智道网联科技(北京)有限公司 | Positioning circuit supporting debugging, debugging control method, electronic device and vehicle |
| CN114003046B (en) * | 2021-12-30 | 2022-03-25 | 智道网联科技(北京)有限公司 | Positioning circuit supporting debugging, debugging control method, electronic device and vehicle |
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Open date: 20081029 |