CN103942169B - Data transmission system and transmission method between a kind of mobile device - Google Patents
Data transmission system and transmission method between a kind of mobile device Download PDFInfo
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Abstract
The invention discloses data transmission system and transmission method between a kind of mobile device, it belongs to high speed data transfer technical field, system includes two mobile devices connected by bus, and each equipment includes CPU parts, principal and subordinate's judgement part, master-slave swap part and EBI；Method includes：Principal and subordinate's judgement part determines master-slave equipment pattern according to default rule, and notifies that master-slave swap part switches to corresponding equipment mode, starts data transfer；The beneficial effect of above-mentioned technical proposal is：Master-slave equipment state can not be independently judged by third party, and is independently connected, it is adaptable to existing various bus standards, and support the high-speed transfer of data.
Description
Technical field
The present invention relates to data transmission method between high speed data transfer technical field, more particularly to a kind of mobile device.
Background technology
Traditional networking model is as shown in figure 1, by network connections such as wifi between internet and mobile device, realize
The quick transmission of data, while small data quantity transmission can be carried out by bluetooth, infrared lamp standard between equipment is end-to-end, if
Need to carry out big data quantity transmission, then must store medium (such as computer, sdcard, USB flash disk etc.) by internet or third party enters
Row copy, it is impossible to easily carry out the direct transmission of big data；The feelings such as a high-definition movie are copied for example between two mobile phones
Under condition, it is rarely employed the modes such as bluetooth and is directly transmitted, all carries out unloading using the third party such as sdcard storage medium mostly.
The speed of the transmission technologys such as existing bluetooth infrared transmission data is slower, and the theoretical velocity of Bluetooth transmission is 720Kb/
S, the maximum speed of new standard reaches 10Mbps；The theoretical velocity of Infrared Transmission is 115.2Kb/s, and the maximum speed of new standard reaches
To 4Mbps, this speed does not adapt to the requirement of mobile multimedia big data transmission.Storing medium by third party carries out data
Copy is one of most popular method for carrying out data transmission between mobile multimedia user at this stage, but this method needs
Third party's medium, elapsed time is long, operates also more complicated.
Chinese patent (CN102857269A) discloses the data transmission method between a kind of mobile phone, the data transfer
Method remains unchanged using Bluetooth transmission mode, it is impossible to bypass the limitation of the above-mentioned Bluetooth transmission mode for referring to.
Chinese patent (CN102325223A) discloses a kind of dependence USB OTG agreements and carries out the side of high speed data transfer
Method, but this method needs manual intervention in the presence of when connecting, to the too high (bus type in the method for limitation of bus type
It is necessary for usb bus) the problems such as.
The content of the invention
According to defect of the prior art, the technical side of data transmission system and transmission method between a kind of mobile device is now carried
Case, specifically includes：
Data transmission system between a kind of mobile device, it is adaptable to the high-speed transfer of data is carried out between two mobile devices, its
In,
Including two mobile devices of interconnection；Each described mobile device include CPU parts, principal and subordinate's judgement part and
Master-slave swap part；Principal and subordinate's judgement part connects the CPU parts and the master-slave swap part respectively；The principal and subordinate cuts
Change part and be also connected with the CPU parts；Include EBI on the master-slave swap part；Lead between two mobile devices
Cross bus connection；The bus is connected on the EBI of the master-slave swap part；
Principal and subordinate's judgement part is used for according to the equipment mode of the predetermined corresponding mobile device of rule judgment, and
Corresponding pattern switching is sent to instruct to the master-slave swap part；The master-slave swap part is instructed according to the pattern switching
The corresponding equipment mode is switched to, and is sent a notification message to the CPU parts；The CPU parts are according to the notice
Message, the high-speed transfer of data is carried out by the bus between two mobile devices.
Preferably, data transmission system between the mobile device, wherein, the EBI includes main interface and from interface；
Be connected to the bus accordingly according to the equipment mode in the corresponding equipment mode of switching by the master-slave swap part
The EBI.
Preferably, data transmission system between the mobile device, wherein, principal and subordinate's judgement part includes a counting
Device；The counter is used for predetermined count.
Data transmission method between a kind of mobile device, wherein, using data transmission system between above-mentioned mobile device, the number
Include according to transmission method：
Two mobile devices are connected by bus；And the mobile device is initialized；
Principal and subordinate's judgement part of each mobile device sets according to the predetermined rule judgment correspondence mobile device
Standby pattern, and instructed to master-slave swap part according to the judged result corresponding pattern switching of transmission；
The master-slave swap part switches to the corresponding equipment mode according to the pattern switching instruction for sending,
And send a notification message to CPU parts；
The CPU parts proceed by data transfer.
Preferably, data transmission method between the mobile device, wherein, if the master-slave swap part switches the equipment mould
Formula fails, then the master-slave swap part returns to switch failure information, principal and subordinate's judgement part to principal and subordinate's judgement part
Continue according to the equipment mode of mobile device described in predetermined rule judgment.
Preferably, data transmission method between the mobile device, wherein, when the data transfer is finished or data-transmission interruptions
When, the CPU parts are sent a notification message to principal and subordinate's judgement part, and principal and subordinate's judgement part is detected in the bus
Signal intensity, and prepare the data transfer next time.
Preferably, data transmission method between the mobile device, wherein, the master-slave swap part is cut by by EBI
Shift to main interface or switch the equipment mode from interface.
Preferably, data transmission method between the mobile device, wherein, the predetermined rule includes：
Step a, when two mobile devices are connected by bus, the principal and subordinate's judging part on each described mobile device
Part detects the level change of the EBI on the mobile device, and sets setting for the mobile device according to default regulation
Standby pattern；
Step b, is the principal and subordinate of mobile device each described if the voltage of two mobile devices judges equal
Counter in judgement part presets an identical count value；The counter according to the intrinsic system of the mobile device frequently
Rate is counted, and when the full count value of meter, principal and subordinate's judgement part detects the level in the bus；If being now height
Level, then drag down the level, and send and switch to the equipment mode of main equipment and instruct to the master-slave swap part；If this
When be low level, then directly transmit and switch to the equipment mode of slave unit and instruct to the master-slave swap part；
Step c, if the system frequency of two mobile devices is equal, the counting on each described mobile device
Device obtains a random value and starts counting up from the CPU parts；When the full random value of meter, principal and subordinate's judgement part
Detect the level in the bus；If being now high level, the level is dragged down, and send the equipment for switching to main equipment
Mode instruction is to the master-slave swap part；If being now low level, directly transmit and switch to the equipment mode of slave unit and refer to
Make to the master-slave swap part.
Preferably, data transmission method between the mobile device, wherein, if two random value phases of the mobile device
Together, then the counter continues to obtain a random value and repeating said steps c from the CPU parts, until distinguishing master
Equipment and slave unit.
Preferably, data transmission method between the mobile device, wherein, the default regulation refers to：When the principal and subordinate judges
When part detects the EBI for high level, the equipment mode that principal and subordinate's judgement part sends main equipment is instructed to institute
State master-slave swap part；When it is low level that principal and subordinate's judgement part detects the EBI, principal and subordinate's judging part
The equipment mode that part sends slave unit is instructed to the master-slave swap part.
Preferably, data transmission method between the mobile device, wherein, the default regulation refers to：When the principal and subordinate judges
When part detects the EBI for low level, the equipment mode that principal and subordinate's judgement part sends main equipment is instructed to institute
State master-slave swap part；When it is high level that principal and subordinate's judgement part detects the EBI, principal and subordinate's judging part
The equipment mode that part sends slave unit is instructed to the master-slave swap part.
The beneficial effect of above-mentioned technical proposal is：Master-slave equipment state can not be independently judged by third party, and is carried out
Autonomous connection, it is adaptable to existing various bus standards, and support the high-speed transfer of data.
Brief description of the drawings
Fig. 1 is networking model schematic diagram traditional in the 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 judged master-slave equipment state in embodiments of the invention.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as limiting to the invention.
It is illustrated in figure 2 in embodiments of the invention, data transmission system schematic diagram includes two need between mobile device
The mobile device (being respectively defined as equipment one and equipment two) of mutual data transmission is wanted, each mobile device is corresponded to equipped with principal and subordinate
Judgement part, master-slave swap part and CPU parts, and the bus and EBI of two mobile devices of connection (are not shown in figure
Go out)；EBI is located at the master-slave swap component end of each equipment, and EBI includes main interface and from interface；Set at each
In standby, principal and subordinate's judgement part connects CPU parts and master-slave swap part respectively, and master-slave swap part connects CPU parts to realize
The transmission of data；The master-slave swap part of each equipment connects the master-slave swap portion of another equipment by EBI and bus
Part, the CPU parts of data from device one are sent to master-slave swap part, then are sent to equipment two by EBI and bus
Master-slave swap part, and eventually enter into the CPU parts of equipment two.
Principal and subordinate attribute of principal and subordinate's judgement part according to predetermined rule judgment equipment；Master-slave swap part is used for according to principal and subordinate
Bus is accessed main interface or from interface by the judged result of judgement part, and then equipment is switched into corresponding holotype or from mould
Formula；CPU parts are used for according to corresponding mode initialisation bus and carry out data transmission；Bus is by master-slave swap part
EBI connects two mobile devices and for transmitting data between mobile device.
Include a counter (not shown) in principal and subordinate's judgement part, the counter is used for the number predetermined to some
Value is counted.
Involved bus includes the bus of multiple standards in said system, i.e., including USB, I2C, PIC etc..Said system
In involved bus be extension to these bus standard applications.
When two mobile devices with above-mentioned data transmission device transmit data, it is necessary first to which it is main which makes clear
Which is slave unit to equipment, that is, need the transmission direction of distinguishes data.And it is necessary to carry out above-mentioned difference operation in the prior art
By third party's execution of instrument, i.e. infrared connection, bluetooth connection or other using third party's unloading equipment such as USB flash disk, mobile hard disks.
Accordingly, it would be desirable to using the transmission method (as shown in Figure 3) provided in embodiments of the invention：
Connection needs to transmit two mobile devices of data first, and starts initialization；Then the principal and subordinate of each equipment sentences
Disconnected part judged two mobile devices according to predetermined rule, determines main equipment and slave unit；Subsequent each equipment
Principal and subordinate's judgement part sends corresponding master-slave swap instruction (for example, equipment according to judged result to corresponding master-slave swap part
A kind of principal and subordinate's judgement part goes out the equipment one for main equipment according to predetermined rule judgment, i.e., sent to master-slave swap part and led
Equipment mode switching command)；Equipment is switched to corresponding modes by master-slave swap part according to switching command, and adjust bus with it is total
(if the reception of master-slave swap part is the instruction of main equipment pattern switching, master-slave swap part will be total for the link position of line interface
Line interface switches to main interface, i.e. bus and is connected on main interface).After completing aforesaid operations, the detection of master-slave swap part is above-mentioned
Whether handover operation completes, if not completing, returns to principal and subordinate's judgement part and continues to detect the level of EBI；If having completed to cut
Change, then master-slave swap part sends message informing CPU parts and carries out data transmission.
After CPU parts receive above-mentioned notification message, the initialization of row bus is entered (if receiving according to corresponding pattern
It is main equipment pattern, then initializes the main interface on CPU parts；If what is received is slave unit pattern, CPU parts are initialized
On from interface)；The CPU parts of both sides mobile device are initialized after finishing, you can according to usb protocol carry out terminal connection and
The high-speed transfer of data.
If data transfer is finished or the situation (such as mistake etc. occurs in data transfer) interrupted, CPU occurs in midway
Part returns to the message that principal and subordinate's judgement part starts monitoring, and principal and subordinate's judgement part restarts the signal intensity on controlling bus,
And prepare next data transfer.
In the connection of single mobile device, the judgement for master-slave equipment is only carried out once, if in this judgement, if
Standby one by as main equipment, then in this connection, it is main equipment that equipment one is constant, until disconnecting.
Certain preset rules should be followed when in the above-described embodiments, to master-slave equipment condition adjudgement, to master-slave equipment shape
The flow that state is judged is as shown in Figure 4：
When two mobile devices are connected by bus, principal and subordinate's judgement part of each equipment detects corresponding device first
Level change on EBI；The height of both end voltage is may determine that according to the current direction on the power line being connected；
Such that it is able to distinguish main equipment and slave unit according to voltage levels, (specific rules can specify in commissioning device, such as assigned voltage
One end high is main equipment, and the low one end of voltage is slave unit；Or in other examples, it is stipulated that based on the low one end of voltage
Equipment, voltage one end high is slave unit)；
If the voltage at two ends judges equal, i.e., cannot be distinguished by current direction during master-slave equipment, can be according to system
Frequency carries out the judgement of master-slave equipment：When being connected by bus between two mobile devices, while starting positioned at each movement
The counter in principal and subordinate's judgement part in equipment, and for two mobile devices specify a default identical count value (example
As in an embodiment of the present invention, the numerical value can be set to 1000, it is also possible to be set to other more moderate numerical value)；Due to every
Individual mobile device all has its intrinsic system frequency, therefore the time of the full above-mentioned count value of counter counts there may be difference；
When the full above-mentioned count value of counter counts, the level in principal and subordinate's judgement part detection bus is just：If being now high level,
The equipment drags down level, and juxtaposition oneself is main equipment；If instead level is for low in bus, then it oneself is from setting directly to put
It is standby；
If the system frequency at two ends is identical, the counter of principal and subordinate's judgement part obtains a meter at random from CPU parts
Numerical value, in an embodiment of the present invention, due to mutually to be distinguished with the count value of previous step, therefore claims the count value in this step
It is random value.Start counter simultaneously, and obtain a random value at random from CPU parts, start counting up.When counter counts are full
During random value, the level in principal and subordinate's judgement part detection bus is just：If being now high level, level is dragged down, juxtaposition is certainly
Oneself is main equipment；If being now low level, oneself is directly put for slave unit；
If the random value given by two CPU parts of mobile device is identical, counter continues to be obtained from CPU parts
Random value simultaneously repeats previous step, until distinguishing main equipment and slave unit.
Preferred embodiments of the present invention are the foregoing is only, embodiments of the present invention and protection model is not thereby limited
Enclose, to those skilled in the art, should can appreciate that done by all utilization description of the invention and diagramatic content
Scheme obtained by equivalent and obvious change, should be included in protection scope of the present invention.
Claims (10)
1. data transmission system between a kind of mobile device, it is adaptable to the high-speed transfer of data is carried out between two mobile devices, it is special
Levy and be,
Including two mobile devices of interconnection；Each described mobile device includes CPU parts, principal and subordinate's judgement part and principal and subordinate
Switching part；Principal and subordinate's judgement part connects the CPU parts and the master-slave swap part respectively；The master-slave swap portion
Part is also connected with the CPU parts；Include EBI on the master-slave swap part；By total between two mobile devices
Line is connected；The bus is connected on the EBI of the master-slave swap part；
Principal and subordinate's judgement part is used for according to the equipment mode of the predetermined corresponding mobile device of rule judgment, and sends
Corresponding pattern switching is instructed to the master-slave swap part；The master-slave swap part is instructed according to the pattern switching and switched
Into the corresponding equipment mode, and send a notification message to the CPU parts；The CPU parts according to the notification message,
The high-speed transfer of data is carried out between two mobile devices by the bus；
Wherein, the predetermined rule includes：
When two mobile devices are connected by bus, the principal and subordinate's judgement part detection on each described mobile device is described
The level change of the EBI on mobile device, and the equipment mode of the mobile device is set according to default regulation；
If the voltage of two mobile devices judges equal, in principal and subordinate's judgement part of mobile device each described
Counter preset an identical count value；The counter is counted according to the intrinsic system frequency of the mobile device
Number, when the full count value of meter, principal and subordinate's judgement part detects the level in the bus；If being now high level,
The level is dragged down, and is sent and is switched to the equipment mode of main equipment and instruct to the master-slave swap part；If being now low
Level, then directly transmit and switch to the equipment mode of slave unit and instruct to the master-slave swap part；
If the system frequency of two mobile devices is equal, the counter on each described mobile device is from described
A random value is obtained in CPU parts and is started counting up；When the full random value of meter, principal and subordinate's judgement part detection is described
Level in bus；If being now high level, the level is dragged down, and send the equipment mode instruction for switching to main equipment
To the master-slave swap part；If being now low level, directly transmit and switch to the equipment mode of slave unit and instruct to described
Master-slave swap part.
2. data transmission system between mobile device as claimed in claim 1, it is characterised in that the EBI includes that master connects
Mouthful and from interface；The master-slave swap part in the corresponding equipment mode of switching, according to the equipment mode will described in
Bus is connected to the corresponding EBI.
3. data transmission system between mobile device as claimed in claim 1, it is characterised in that wrapped in principal and subordinate's judgement part
Include a counter；The counter is used for predetermined count.
4. data transmission method between a kind of mobile device, it is characterised in that using as described in any one in claim 1-3
Data transmission system between mobile device, the data transmission method includes：
Two mobile devices are connected by bus；And the mobile device is initialized；
Principal and subordinate's judgement part of each mobile device corresponds to the equipment mould of the mobile device according to predetermined rule judgment
Formula, and instructed to master-slave swap part according to the judged result corresponding pattern switching of transmission；The predetermined rule includes：
Step a, when two mobile devices are connected by bus, the principal and subordinate's judgement part inspection on each described mobile device
The level change of the EBI surveyed on the mobile device, and the equipment mould of the mobile device is set according to default regulation
Formula；
Step b, if the voltage of two mobile devices judges equal, for the principal and subordinate of mobile device each described judges
Counter on part presets an identical count value；The counter enters according to the intrinsic system frequency of the mobile device
Row is counted, and when the full count value of meter, principal and subordinate's judgement part detects the level in the bus；If being now electricity high
It is flat, then the level is dragged down, and send and switch to the equipment mode of main equipment and instruct to the master-slave swap part；If now
It is low level, then directly transmits and switch to the equipment mode of slave unit and instruct to the master-slave swap part；
Step c, if the system frequency of two mobile devices is equal, the counter on each described mobile device from
A random value is obtained in the CPU parts and is started counting up；When the full random value of meter, principal and subordinate's judgement part detection
Level in the bus；If being now high level, the level is dragged down, and send the equipment mode for switching to main equipment
Instruct to the master-slave swap part；If now be low level, directly transmit switch to slave unit equipment mode instruct to
The master-slave swap part；
The master-slave swap part switches to the corresponding equipment mode according to the pattern switching instruction for sending, concurrently
Send notification message to CPU parts；
The CPU parts proceed by data transfer.
5. data transmission method between mobile device as claimed in claim 4, it is characterised in that if the master-slave swap part is cut
The equipment mode failure is changed, then the master-slave swap part returns to switch failure information to principal and subordinate's judgement part, described
Principal and subordinate's judgement part 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 characterised in that finish when the data transfer or
During data-transmission interruptions, the CPU parts send a notification message to principal and subordinate's judgement part, principal and subordinate's judgement part detection
Signal intensity in the bus, and prepare the data transfer next time.
7. data transmission method between mobile device as claimed in claim 4, it is characterised in that the master-slave swap part passes through
EBI is switched into main interface or switches the equipment mode from interface.
8. data transmission method between mobile device as claimed in claim 4, it is characterised in that if two mobile devices
The random value is identical, then the counter continues to obtain a random value and repeating said steps c from the CPU parts,
Until distinguishing main equipment and slave unit.
9. data transmission method between mobile device as claimed in claim 4, it is characterised in that the default regulation refers to：When
When principal and subordinate's judgement part detects the EBI for high level, the equipment that principal and subordinate's judgement part sends main equipment
Mode instruction is to the master-slave swap part；When it is low level that principal and subordinate's judgement part detects the EBI, institute
The equipment mode for stating principal and subordinate's judgement part transmission slave unit is instructed to the master-slave swap part.
10. data transmission method between mobile device as claimed in claim 4, it is characterised in that the default regulation refers to：When
When principal and subordinate's judgement part detects the EBI for low level, the equipment that principal and subordinate's judgement part sends main equipment
Mode instruction is to the master-slave swap part；When it is high level that principal and subordinate's judgement part detects the EBI, institute
The equipment mode for stating principal and subordinate's judgement part transmission slave unit is instructed to the master-slave swap part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410133122.8A CN103942169B (en) | 2014-04-03 | 2014-04-03 | Data transmission system and transmission method between a kind of mobile device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410133122.8A CN103942169B (en) | 2014-04-03 | 2014-04-03 | Data transmission system and transmission method between a kind of mobile device |
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| CN103942169B true CN103942169B (en) | 2017-06-23 |
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| CN106445856B (en) | 2015-08-07 | 2019-05-14 | 小米科技有限责任公司 | Interface circuit, state switching method and device |
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| CN103942169A (en) | 2014-07-23 |
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