CN103942169A - System and method for transmitting data between mobile devices - Google Patents
System and method for transmitting data between mobile devices Download PDFInfo
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- CN103942169A CN103942169A CN201410133122.8A CN201410133122A CN103942169A CN 103942169 A CN103942169 A CN 103942169A CN 201410133122 A CN201410133122 A CN 201410133122A CN 103942169 A CN103942169 A CN 103942169A
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Abstract
The invention discloses a system and method for transmitting data between mobile devices and belongs to the technical field of high-speed data transmission. The system comprises the two mobile devices connected through a bus, each mobile device comprises a CPU component, a master-slave judgment component, a master-slave switching component and a bus interface. The method includes the steps that the master-slave judgment component is used for determining a master-slave device mode according to a preset rule and informing the master-slave switching component to be switched to be in the corresponding device mode, and data transmitting is started. According to the technical scheme, the system and method for transmitting the data between the mobile devices have the advantages that the master-slave device state can be automatically judged without a third party, automatic connection is achieved, and the system and method are suitable for multiple existing bus standards and support high-speed data transmission.
Description
Technical field
The present invention relates to data high-speed transmission technique field, relate in particular to data transmission method between a kind of mobile device.
Background technology
Traditional networking model as shown in Figure 1, between internet and mobile device, be connected by networks such as wifi, realize the fast transport of data, between while equipment is end-to-end, can carry out small data quantity transmission by bluetooth, infrared lamp standard, if need to carry out big data quantity transmission, must by internet or third party's storage medium (as computer, sdcard, USB flash disk etc.) copy, can not carry out easily the direct transmission of large data; For example, copying in the situations such as a high-definition movie between two mobile phones, seldom use the modes such as bluetooth directly to transmit, mostly all use third party's storage mediums such as sdcard to carry out unloading.
The speed of the transmission technology transmission data such as existing bluetooth infrared is slower, and the theoretical velocity of Bluetooth transmission is 720Kb/s, and the top speed of new standard reaches 10Mbps; The theoretical velocity of Infrared Transmission is 115.2Kb/s, and the top speed of new standard reaches 4Mbps, and this speed can not adapt to the requirement of the large data transmission of mobile multimedia.Carrying out data copy by third party's storage medium is one of most popular method of present stage carrying out data transmission between mobile multimedia user, but this method needs third party's medium, and elapsed time is long, and also more complicated operates.
Chinese patent (CN102857269A) discloses the data transmission method between a kind of mobile phone, and this data transmission method still adopts Bluetooth transmission mode, cannot walk around the limitation of the above-mentioned Bluetooth transmission mode of mentioning.
Chinese patent (CN102325223A) discloses a kind of USB of dependence OTG agreement carries out the method for high speed data transfer, but existing while connection, this method needs manual intervention, to problems such as the restrictions of bus type too high (bus type in the method is necessary for usb bus).
Summary of the invention
According to defect of the prior art, now put forward the technical scheme of data transmission system and transmission method between a kind of mobile device, specifically comprise:
Data transmission system between a kind of mobile device, is applicable to carry out between two mobile devices the high-speed transfer of data, wherein,
Comprise two interconnective mobile devices; Each described mobile device comprises CPU parts, principal and subordinate's decision means and master-slave swap parts; Described principal and subordinate's decision means connects respectively described CPU parts and described master-slave swap parts; Described master-slave swap parts also connect described CPU parts; On described master-slave swap parts, comprise bus interface; Between two described mobile devices, connect by bus; Described bus is connected in the described bus interface of described master-slave swap parts;
Described principal and subordinate's decision means is used for according to the equipment mode of described mobile device corresponding to predetermined rule judgment, and sends corresponding pattern switching command to described master-slave swap parts; Described master-slave swap parts switch to corresponding described equipment mode according to described pattern switching command, and send a notification message to described CPU parts; Described CPU parts, according to described notification message, carry out the high-speed transfer of data between two described mobile devices by described bus.
Preferably, data transmission system between this mobile device, wherein, described bus interface comprises main interface and from interface; Described master-slave swap parts, in the time switching corresponding described equipment mode, are connected to corresponding described bus interface according to described equipment mode by described bus.
Preferably, data transmission system between this mobile device, wherein, described principal and subordinate's decision means comprises a counter; Described counter is for the count value counting to predetermined.
Data transmission method between a kind of mobile device, wherein, adopts data transmission system between above-mentioned mobile device, and described data transmission method comprises:
Two mobile devices connect by bus; And described mobile device is carried out to initialization;
Principal and subordinate's decision means of each described mobile device is according to the equipment mode of the corresponding described mobile device of predetermined rule judgment, and sends corresponding pattern switching command to master-slave swap parts according to judged result;
Described master-slave swap parts switch to corresponding described equipment mode according to the described pattern switching command sending, and send a notification message to CPU parts;
Described CPU parts start to carry out data transmission.
Preferably, data transmission method between this mobile device, wherein, if described master-slave swap parts switch described equipment mode failure, described master-slave swap parts return to switch failure information to described principal and subordinate's decision means, and described principal and subordinate's decision means continues according to the equipment mode of mobile device described in predetermined rule judgment.
Preferably, data transmission method between this mobile device, wherein, in the time that described data transmission is complete or data transmission is interrupted, described CPU parts send a notification message to described principal and subordinate's decision means, described principal and subordinate's decision means detects the signal intensity in described bus, and prepares described data transmission next time.
Preferably, data transmission method between this mobile device, wherein, described master-slave swap parts are by switching to bus interface main interface or switching described equipment mode from interface.
Preferably, data transmission method between this mobile device, wherein, described default rule comprises:
Step a, in the time that two described mobile devices connect by bus, the level that the principal and subordinate's decision means on each described mobile device detects the bus interface on described mobile device changes, and the equipment mode of described mobile device is set according to default regulation;
Step b, if the voltage of two described mobile devices judgement equate, be that the counter in described principal and subordinate's decision means of each described mobile device is preset an identical count value; Described counter is counted according to the intrinsic system frequency of described mobile device, and in the time of the full described count value of meter, described principal and subordinate's decision means detects the level in described bus; If be now high level, described level dragged down, and send the equipment mode instruction that switches to main equipment to described master-slave swap parts; If be now low level, directly send and switch to from the equipment mode instruction of equipment to described master-slave swap parts;
Step c, if the system frequency of two described mobile devices is equal, the described counter on each described mobile device obtains a random value and starts counting from described CPU parts; In the time of the full described random value of meter, described principal and subordinate's decision means detects the level in described bus; If be now high level, described level dragged down, and send the equipment mode instruction that switches to main equipment to described master-slave swap parts; If be now low level, directly send and switch to from the equipment mode instruction of equipment to described master-slave swap parts.
Preferably, data transmission method between this mobile device, wherein, if the described random value of two described mobile devices is identical, described counter continues from described CPU parts, to obtain a random value repeating said steps c, until distinguish main equipment and from equipment.
Preferably, data transmission method between this mobile device, wherein, described default regulation refers to: in the time that described principal and subordinate's decision means detects described bus interface and is high level, described principal and subordinate's decision means sends the equipment mode instruction of main equipment to described master-slave swap parts; In the time that described principal and subordinate's decision means detects described bus interface and is low level, described principal and subordinate's decision means sends from the equipment mode instruction of equipment to described master-slave swap parts.
Preferably, data transmission method between this mobile device, wherein, described default regulation refers to: in the time that described principal and subordinate's decision means detects described bus interface and is low level, described principal and subordinate's decision means sends the equipment mode instruction of main equipment to described master-slave swap parts; In the time that described principal and subordinate's decision means detects described bus interface and is high level, described principal and subordinate's decision means sends from the equipment mode instruction of equipment to described master-slave swap parts.
The beneficial effect of technique scheme is: can independently not judge master-slave equipment state by third party, and independently connect, be applicable to existing multiple bus standard, and the high-speed transfer of supported data.
Brief description of the drawings
Fig. 1 is networking model schematic diagram traditional in prior art;
Fig. 2 is the foundation structure schematic diagram of data transmission method in embodiments of the invention;
Fig. 3 is the schematic flow sheet of data transmission method in embodiments of the invention;
Fig. 4 is the schematic flow sheet in embodiments of the invention, master-slave equipment state being judged.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
Be illustrated in figure 2 in embodiments of the invention, between mobile device, data transmission system schematic diagram has comprised two mobile devices (being defined as respectively equipment one and equipment two) that need mutual data transmission, corresponding each mobile device is equipped with principal and subordinate's decision means, master-slave swap parts and CPU parts, and connects bus and the bus interface (not shown) of two mobile devices; Bus interface is positioned at the master-slave swap parts end of each equipment, and bus interface comprises main interface and from interface; In each equipment, principal and subordinate's decision means connects respectively CPU parts and master-slave swap parts, and master-slave swap parts connect CPU parts to realize the transmission of data; The master-slave swap parts of each equipment are connected the master-slave swap parts of another equipment with bus by bus interface, data are sent to master-slave swap parts from the CPU parts of equipment one, be sent to again the master-slave swap parts of equipment two by bus interface and bus, and the CPU parts of final access arrangement two.
Principal and subordinate's decision means is according to principal and subordinate's attribute of predetermined rule judgment equipment; Master-slave swap parts are for according to the judged result of principal and subordinate's decision means, bus being accessed to main interface or from interface, and then equipment are switched to corresponding holotype or from pattern; CPU parts are for the corresponding pattern initialization bus of basis and carry out data transmission; Bus is connected two mobile devices and is transmitted data between mobile device by the bus interface on master-slave swap parts.
Comprise a counter (not shown) in principal and subordinate's decision means, this counter is for counting some predetermined numerical value.
In said system, related bus comprises the bus of multiple standards, comprises USB, I2C, PIC etc.In said system, related bus is the expansion to these bus standard application.
In the time of two mobile device transmission data with above-mentioned data transmission device, first need to make clear which be main equipment which be from equipment, need the transmission direction of distinguishes data.Must rely on third party's execution of instrument and will carry out above-mentioned difference operation in prior art, i.e. infrared connection, bluetooth connects or other adopt USB flash disk, portable hard drive grade in an imperial examination tripartite unloading equipment.Therefore, need to adopt the transmission method (as shown in Figure 3) providing in embodiments of the invention:
First connect and need to transmit two mobile devices of data, and start initialization; Then principal and subordinate's decision means of each equipment judges two mobile devices according to default rule, determines main equipment and from equipment; Principal and subordinate's decision means of each equipment (for example sends corresponding master-slave swap instruction according to judged result to corresponding master-slave swap parts subsequently, it is main equipment that a kind of principal and subordinate's decision means of equipment goes out this equipment one according to default rule judgment, sends main equipment pattern switching command to master-slave swap parts); Master-slave swap parts switch to corresponding modes according to switching command by equipment, and the link position of adjusting bus and bus interface is (if the reception of master-slave swap parts is main equipment pattern switching command, bus interface is switched to main interface by master-slave swap parts, and bus is connected on main interface).Complete after aforesaid operations, whether master-slave swap parts detect above-mentioned blocked operation and complete, if do not complete, return to the level of principal and subordinate's decision means continuation testbus interface; If completed switching, master-slave swap parts transmission message informing CPU parts carry out data transmission.
CPU parts receive after above-mentioned notification message, according to corresponding pattern carry out bus initialization (if what receive is main equipment pattern, the main interface on initialization CPU parts; If what receive is from equipment mode, on initialization CPU parts from interface); After the equal initialization of CPU parts of both sides mobile device, can carry out according to usb protocol the high-speed transfer of terminal connection and data.
Such as, if data transmission is complete or occur the situation (mistake etc. appears in data transmission) of interrupting midway, CPU parts return principal and subordinate's decision means start monitoring message, principal and subordinate's decision means restarts the signal intensity on controlling bus, and prepares data transmission next time.
In the connection of single mobile device, only carry out once for the judgement of master-slave equipment, if in this judgement, equipment one is used as main equipment,, in this connects, equipment one is constant is main equipment, until disconnecting.
In the above-described embodiments, when master-slave equipment state is judged, should follow certain preset rules, the flow process that master-slave equipment state is judged as shown in Figure 4:
In the time that two mobile devices connect by bus, the level that first principal and subordinate's decision means of each equipment detects in the bus interface of corresponding device changes; Can judge the height of both end voltage according to the current direction on the power lead being connected; Thereby can distinguish main equipment and (specific rules can specify when the commissioning device, and one end as high in assigned voltage is main equipment, and one end that voltage is low is from equipment from equipment according to voltage height; Or in other embodiment, one end that assigned voltage is low is main equipment, one end that voltage is high is from equipment);
If the judgement of the voltage at two ends equates, cannot distinguish master-slave equipment by current direction time, can carry out according to the frequency of system the judgement of master-slave equipment: in the time connecting by bus between two mobile devices, start the counter of the principal and subordinate's decision means that is arranged in each mobile device simultaneously, and be that two mobile devices specify a default identical count value (for example in an embodiment of the present invention, this numerical value can be decided to be 1000, also can be decided to be other more moderate numerical value); Because each mobile device has its intrinsic system frequency, therefore the time of the full above-mentioned count value of counter meter may there are differences; In the time of the full above-mentioned count value of counter meter, the level height in principal and subordinate's decision means testbus: if be now high level, this equipment drags down level, and juxtaposition oneself is main equipment; If instead level is low in bus, directly putting oneself is from equipment;
If the system frequency at two ends is identical, the counter of principal and subordinate's decision means obtains at random a count value from CPU parts, in an embodiment of the present invention, owing to distinguishing mutually with the count value of previous step, therefore the count value in this step is called to random value.Start counter simultaneously, and from CPU parts, obtain at random a random value, start counting.In the time of the full random value of counter meter, the level height in principal and subordinate's decision means testbus: if be now high level, level is dragged down, juxtaposition oneself is main equipment; If be now low level, directly putting oneself is from equipment;
If the given random value of the CPU parts of two mobile devices is identical, counter continues from CPU parts, obtain random value and repeat previous step, until distinguish main equipment and from equipment.
The foregoing is only preferred embodiment of the present invention; not thereby limit embodiments of the present invention and protection domain; to those skilled in the art; the scheme that being equal to of should recognizing that all utilizations instructions of the present invention and diagramatic content done replaces and apparent variation obtains, all should be included in protection scope of the present invention.
Claims (11)
1. a data transmission system between mobile device, is applicable to carry out between two mobile devices the high-speed transfer of data, it is characterized in that,
Comprise two interconnective mobile devices; Each described mobile device comprises CPU parts, principal and subordinate's decision means and master-slave swap parts; Described principal and subordinate's decision means connects respectively described CPU parts and described master-slave swap parts; Described master-slave swap parts also connect described CPU parts; On described master-slave swap parts, comprise bus interface; Between two described mobile devices, connect by bus; Described bus is connected in the described bus interface of described master-slave swap parts;
Described principal and subordinate's decision means is used for according to the equipment mode of described mobile device corresponding to predetermined rule judgment, and sends corresponding pattern switching command to described master-slave swap parts; Described master-slave swap parts switch to corresponding described equipment mode according to described pattern switching command, and send a notification message to described CPU parts; Described CPU parts, according to described notification message, carry out the high-speed transfer of data between two described mobile devices by described bus.
2. data transmission system between mobile device as claimed in claim 1, is characterized in that, described bus interface comprises main interface and from interface; Described master-slave swap parts, in the time switching corresponding described equipment mode, are connected to corresponding described bus interface according to described equipment mode by described bus.
3. data transmission system between mobile device as claimed in claim 1, is characterized in that, described principal and subordinate's decision means comprises a counter; Described counter is for the count value counting to predetermined.
4. a data transmission method between mobile device, is characterized in that, adopts data transmission system between the mobile device as described in any one in claim 1-3, and described data transmission method comprises:
Two mobile devices connect by bus; And described mobile device is carried out to initialization;
Principal and subordinate's decision means of each described mobile device is according to the equipment mode of the corresponding described mobile device of predetermined rule judgment, and sends corresponding pattern switching command to master-slave swap parts according to judged result;
Described master-slave swap parts switch to corresponding described equipment mode according to the described pattern switching command sending, and send a notification message to CPU parts;
Described CPU parts start to carry out data transmission.
5. data transmission method between mobile device as claimed in claim 4, it is characterized in that, if described master-slave swap parts switch described equipment mode failure, described master-slave swap parts return to switch failure information to described principal and subordinate's decision means, and described principal and subordinate's decision means continues according to the equipment mode of mobile device described in predetermined rule judgment.
6. data transmission method between mobile device as claimed in claim 4, it is characterized in that, in the time that described data transmission is complete or data transmission is interrupted, described CPU parts send a notification message to described principal and subordinate's decision means, described principal and subordinate's decision means detects the signal intensity in described bus, and prepares described data transmission next time.
7. data transmission method between mobile device as claimed in claim 4, is characterized in that, described master-slave swap parts are by switching to bus interface main interface or switching described equipment mode from interface.
8. data transmission method between mobile device as claimed in claim 4, is characterized in that, described default rule comprises:
Step a, in the time that two described mobile devices connect by bus, the level that the principal and subordinate's decision means on each described mobile device detects the bus interface on described mobile device changes, and the equipment mode of described mobile device is set according to default regulation;
Step b, if the voltage of two described mobile devices judgement equate, be that the counter in described principal and subordinate's decision means of each described mobile device is preset an identical count value; Described counter is counted according to the intrinsic system frequency of described mobile device, and in the time of the full described count value of meter, described principal and subordinate's decision means detects the level in described bus; If be now high level, described level dragged down, and send the equipment mode instruction that switches to main equipment to described master-slave swap parts; If be now low level, directly send and switch to from the equipment mode instruction of equipment to described master-slave swap parts;
Step c, if the system frequency of two described mobile devices is equal, the described counter on each described mobile device obtains a random value and starts counting from described CPU parts; In the time of the full described random value of meter, described principal and subordinate's decision means detects the level in described bus; If be now high level, described level dragged down, and send the equipment mode instruction that switches to main equipment to described master-slave swap parts; If be now low level, directly send and switch to from the equipment mode instruction of equipment to described master-slave swap parts.
9. data transmission method between mobile device as claimed in claim 8, it is characterized in that, if the described random value of two described mobile devices is identical, described counter continues from described CPU parts, to obtain a random value repeating said steps c, until distinguish main equipment and from equipment.
10. data transmission method between mobile device as claimed in claim 8, it is characterized in that, described default regulation refers to: in the time that described principal and subordinate's decision means detects described bus interface and is high level, described principal and subordinate's decision means sends the equipment mode instruction of main equipment to described master-slave swap parts; In the time that described principal and subordinate's decision means detects described bus interface and is low level, described principal and subordinate's decision means sends from the equipment mode instruction of equipment to described master-slave swap parts.
Data transmission method between 11. mobile devices as claimed in claim 8, it is characterized in that, described default regulation refers to: in the time that described principal and subordinate's decision means detects described bus interface and is low level, described principal and subordinate's decision means sends the equipment mode instruction of main equipment to described master-slave swap parts; In the time that described principal and subordinate's decision means detects described bus interface and is high level, described principal and subordinate's decision means sends from the equipment mode instruction of equipment to described master-slave swap parts.
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