CN105573946A - Universal serial bus interface sharing method and device - Google Patents
Universal serial bus interface sharing method and device Download PDFInfo
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- CN105573946A CN105573946A CN201610115643.XA CN201610115643A CN105573946A CN 105573946 A CN105573946 A CN 105573946A CN 201610115643 A CN201610115643 A CN 201610115643A CN 105573946 A CN105573946 A CN 105573946A
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- input circuit
- usb
- serial bus
- universal serial
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
Abstract
The invention provides a universal serial bus interface sharing method and device. The universal serial bus interface sharing method comprises the steps that when it is detected that an external device is connected into a universal serial bus interface, a device selection control is displayed on a terminal screen and is used for prompting a user to select target device information from a preset device information list displayed by the device selection control; the target device information received by the device selection control is obtained; a data input circuit connected with a data line lead pin is adjusted according to the target device information to enable matching between the universal serial bus interface and the external device to succeed. By the adoption of the universal serial bus interface sharing method and device, due to the fact that the type of the external device can be determined according to the displayed device selection control, the data input circuit connected with a D+/D- lead pin is correspondingly adjusted to achieve function multiplex of a USB interface.
Description
Technical field
The present invention relates to field of terminal technology, particularly relate to a kind of multiplexing method of USB (universal serial bus) and device.
Background technology
Along with the development of terminal, terminal is more and more tending towards ultrathin design, and is subject to the restriction in the aperture in conventional earphone hole, limits the trend of terminal to more thinning design, has occurred that USB earphone is with the restriction avoiding conventional earphone to bring immediately.
Along with USB earphone becomes the selection of ultra-thin Terminal Design, cause the USB interface of existing terminal can not support OTG equipment, and existing USB interface is when connecting USB earphone and OTG equipment, ID pin is all ground connection, thus cannot identify the type of External Access Equipment.Due to when USB interface is at connection USB earphone, the data input circuit that ID pin connects, the data input circuit that when connecting OTG equipment from USB interface, ID pin connects is different, make the USB (universal serial bus) (USB of existing terminal, UniversalSerialBus) interface only supports a kind of external equipment, the one in such as USB earphone or OTG (On-The-Go) equipment.Visible, the USB interface of existing terminal cannot realize USB earphone and OTG multiplexing, decrease the available function of terminal.
Summary of the invention
A kind of method that the embodiment of the present invention provides USB (universal serial bus) multiplexing and device, USB earphone cannot be realized with the USB interface solving existing terminal and OTG multiplexing, decrease the technical matters of the available function of terminal.
For solving the problem, technical scheme provided by the invention is as follows:
A kind of method that the embodiment of the present invention provides USB (universal serial bus) multiplexing, it comprises:
When detecting that USB (universal serial bus) has external equipment to access, control selected by display device on a terminal screen, and described equipment choice control is for pointing out user select target facility information in its default facility information list shown;
By described equipment choice control receiving target facility information;
Adjust the data input circuit of the data line pin connection of described USB (universal serial bus) according to described target device information, to make described USB (universal serial bus) and described external equipment, the match is successful.
The device that the embodiment of the present invention also provides a kind of USB (universal serial bus) multiplexing, it comprises:
Display module, for when detecting that USB (universal serial bus) has external equipment to access, control selected by display device on a terminal screen, and described equipment choice control is for pointing out user select target facility information in its default facility information list shown;
Receiver module, for passing through described equipment choice control receiving target facility information;
Adjusting module, the data input circuit that the data line pin for adjusting described USB (universal serial bus) according to described target device information connects, to make described USB (universal serial bus) and described external equipment, the match is successful.
Compared to prior art, the method that the USB (universal serial bus) of the present embodiment is multiplexing and device, when detecting that USB (universal serial bus) has external equipment to access, control selected by display device on a terminal screen, and this equipment choice control is for pointing out user select target facility information in its default facility information list shown; Obtain the target device information that this equipment choice control receives; Adjust the data input circuit of this data line pin connection according to this target device information, to make this USB (universal serial bus) and this external equipment, the match is successful.Due to control can be selected according to display device, determine the type of External Access Equipment, thus the data input circuit that D+/D-pin connects correspondingly is adjusted, to realize the multiplexing functions of USB interface.
Accompanying drawing explanation
The process flow diagram of the method that the USB (universal serial bus) that Fig. 1 provides for the embodiment of the present invention one is multiplexing;
The process flow diagram of the method that the USB (universal serial bus) that Fig. 2 provides for the embodiment of the present invention two is multiplexing;
The process flow diagram of the method that the USB (universal serial bus) that Fig. 3 provides for the embodiment of the present invention three is multiplexing;
The structural representation of the device that the USB (universal serial bus) that Fig. 4 provides for the embodiment of the present invention four is multiplexing;
The preferred structure schematic diagram of the device that the USB (universal serial bus) that Fig. 5 provides for the embodiment of the present invention four is multiplexing.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, the process flow diagram of the method that the USB (universal serial bus) that Fig. 1 provides for the embodiment of the present invention one is multiplexing.
The method that the USB (universal serial bus) of this preferred embodiment is multiplexing, comprising:
Step S101, when detecting that USB (universal serial bus) has external equipment to access, control selected by display device on a terminal screen;
Such as, when terminal detects that USB interface has the one in USB earphone or OTG equipment to access, display choice box, the content of this choice box display such as " please select current external equipment: USB earphone or OTG equipment "; That is, this equipment choice control is for pointing out user select target facility information in its default facility information list shown; This terminal can be the equipment such as mobile phone, panel computer.
Step S102, by this equipment choice control receiving target facility information;
Such as, user selects USB earphone in this choice box, then the target device information that terminal gets is USB earphone; When user selects OTG equipment in this choice box, then the target device information that terminal gets is OTG equipment.
Step S103, adjust the data input circuit of the data line pin connection of this USB (universal serial bus) according to this target device information, to make this USB (universal serial bus) and this external equipment, the match is successful.
Such as, this data line pin is such as D+/D-pin.When D+/D-pin due to USB interface connects audio input circuit, could drive USB earphone, therefore when the target device information that terminal gets is USB earphone, the D+/D-pin of USB interface is connected to audio input circuit by terminal.Again such as, when the D+/D-pin due to USB interface connects CPU input circuit, OTG equipment could be driven; When the target device information that terminal gets is OTG equipment, the D+/D-pin of USB interface is connected to CPU input circuit by terminal; Thus be convenient to USB interface and can support USB earphone and OTG equipment simultaneously.
The method that the USB (universal serial bus) of this preferred embodiment is multiplexing, due to control can be selected according to display device, determine the type of External Access Equipment, thus the data input circuit that D+/D-pin connects correspondingly is adjusted, to realize the multiplexing functions of USB interface.
Please refer to Fig. 2, the process flow diagram of the method that the USB (universal serial bus) that Fig. 2 provides for the embodiment of the present invention two is multiplexing.
The method that the USB (universal serial bus) of this preferred embodiment is multiplexing, comprising:
Step S201, when detecting that USB (universal serial bus) has external equipment to access, control selected by display device on a terminal screen;
Such as, when terminal detects that USB interface has the one in USB earphone or OTG equipment to access, display choice box, the content of this choice box display such as " please select current external equipment: USB earphone or OTG equipment "; That is, this equipment choice control is for pointing out user select target facility information in its default facility information list shown; This terminal can be the equipment such as mobile phone, panel computer.
In order to improve the detection efficiency of terminal, this detects that the step that USB (universal serial bus) has external equipment to access comprises:
Whether A, the change in voltage detecting this recognition of devices pin meet pre-conditioned;
If B detects the change in voltage of this recognition of devices pin and meets that this is pre-conditioned, then determine that this USB (universal serial bus) has external equipment to access.
Such as, this recognition of devices pin is the ID pin of USB interface, and whether the voltage that terminal detects ID pin is dragged down, if terminal detects that the voltage of ID pin is dragged down, then determines that USB interface has external equipment to access.
Step S202, by this equipment choice control receiving target facility information;
Such as, user selects USB earphone in this choice box, then the target device information that terminal gets is USB earphone; When user selects OTG equipment in this choice box, then the target device information that terminal gets is OTG equipment.
Step S203, determines to obtain target input circuit by the data input circuit that this data line pin is corresponding according to this target device information;
Such as, this data line pin is such as D+/D-pin, and terminal can determine according to this target device information the data input circuit that D+/D-pin is corresponding; Such as, when the D+/D-pin due to USB interface connects audio input circuit, could drive USB earphone, therefore when the target device information that terminal gets is USB earphone, the target input circuit that terminal gets is audio input circuit.Again such as, when the D+/D-pin due to USB interface connects CPU input circuit, OTG equipment could be driven; When the target device information that terminal gets is OTG equipment, the target input circuit that terminal gets is CPU input circuit.
In order to improve the efficiency of terminal, this determines according to this target device information the data input circuit that this data line pin is corresponding, and the step obtaining target input circuit comprises:
M, in presetting database, search the default facility information corresponding with this target device information;
N, obtain process path corresponding to this default facility information, obtain this target input circuit.
Such as, terminal stores default facility information in advance in presetting database, and the treatment circuit corresponding with default facility information; Such as presetting database is specifically stored as: when default facility information is USB earphone, and corresponding treatment circuit is audio input circuit; When default facility information is OTG equipment, corresponding treatment circuit is CPU input circuit.
Such as, when the target device information that terminal gets is USB earphone, in presetting database, find the default facility information mated with it is USB earphone, because the treatment circuit that the USB earphone stored in presetting database is corresponding is audio input circuit, the target input circuit that therefore terminal gets is audio input circuit.
Step S204, adjusts the data input circuit that this data line pin connects according to this target input circuit, and to make this USB (universal serial bus) and this external equipment, the match is successful.
Such as, the data input circuit of target input circuit to the connection of D+/D-pin obtained according to step S203 adjusts.Such as, the target input circuit got when terminal is audio input circuit, and now the D+/D-pin of USB interface is connected to audio input circuit by terminal.Again such as, the target input circuit got when terminal is CPU input circuit, and now the D+/D-pin of USB interface is connected to CPU input circuit by terminal.
In order to improve the accuracy of adjustment, terminal can obtain the data input circuit of the current connection of data wire pin, the data input circuit of current connection and this target input circuit are compared, according to comparative result, the data input circuit that data wire pin connects is adjusted, that is, this comprises the step that the data input circuit that this data line pin connects adjusts according to this target input circuit:
(1) obtain the data input circuit of the current connection of this data line pin, obtain initial input circuit;
(2) judge that whether this initial input circuit is identical with this target input circuit, obtains judged result;
(3) if to be this initial input circuit not identical with this target input circuit for this judged result, then this data line pin is switched to this target input circuit from this initial input circuit and connect.
Such as, the data input circuit that terminal obtains the current connection of D+/D-pin is audio input circuit, also namely initial input circuit is audio input circuit, the target input circuit that such as terminal obtains is CPU input circuit, then determine that initial input circuit is different from target input circuit, now D+/D-pin is switched to CPU input circuit and connects by terminal; The target input circuit that such as terminal obtains again is audio input circuit, then determine that initial input circuit is identical with target input circuit, and now terminal continues D+/D-pin to be connected to audio input circuit, does not carry out circuit switching.
The method that the USB (universal serial bus) of this preferred embodiment is multiplexing, due to control can be selected according to display device, determine the type of External Access Equipment, and determine corresponding data input circuit according to the type of External Access Equipment, according to established data input circuit, the data input circuit that D+/D-pin connects correspondingly is adjusted afterwards, to realize the multiplexing functions of USB interface.
Please refer to Fig. 3, the process flow diagram of the method that the USB (universal serial bus) that Fig. 3 provides for the embodiment of the present invention three is multiplexing.
The present embodiment take terminal as smart mobile phone for example is described in detail, the method that the USB (universal serial bus) of this preferred embodiment is multiplexing, comprising:
Step S301, when smart mobile phone detects that USB (universal serial bus) has external equipment to access, on smart mobile phone screen, control selected by display device;
Such as, whether the voltage that smart mobile phone detects the ID pin of USB interface is dragged down, if smart mobile phone detects that the voltage of ID pin is dragged down, then determines that USB interface has external equipment to access.This external equipment is USB earphone or OTG equipment, and now smart mobile phone shows choice box on screen, and the content of this choice box display such as " please select current external equipment: USB earphone or OTG equipment ".
Step S302, smart mobile phone is by this equipment choice control receiving target facility information;
Below for smart mobile phone access external equipment for OTG equipment, such as, user selects OTG equipment in this choice box, then the target device information that smart mobile phone gets is OTG equipment.
Step S303, smart mobile phone is determined to obtain target input circuit by the data input circuit that this data line pin is corresponding according to this target device information;
Such as, smart mobile phone stores default facility information in advance in presetting database, and the treatment circuit corresponding with default facility information; Such as presetting database is specifically stored as: when default facility information is USB earphone, and corresponding treatment circuit is audio input circuit; When default facility information is OTG equipment, corresponding treatment circuit is CPU input circuit.
Such as, when the target device information that smart mobile phone gets is OTG equipment, in presetting database, find the default facility information mated with it is OTG equipment, because the treatment circuit that the OTG equipment stored in presetting database is corresponding is CPU input circuit, the target input circuit that therefore smart mobile phone gets is CPU input circuit.
Step S304, smart mobile phone adjusts the data input circuit that this data line pin connects according to this target input circuit, and to make this USB (universal serial bus) and this external equipment, the match is successful.
Such as, smart mobile phone can obtain the data input circuit of the current connection of data wire pin, also be initial input circuit, initial input circuit and this target input circuit compared, according to comparative result, the data input circuit that data wire pin connects is adjusted.Such as, the data input circuit that smart mobile phone obtains the current connection of D+/D-pin is audio input circuit, and also namely initial input circuit is audio input circuit.The target input circuit obtained due to smart mobile phone is CPU input circuit, then determine that initial input circuit is different from target input circuit, then D+/D-pin is switched to CPU input circuit and connect.
Again such as, the data input circuit that smart mobile phone obtains the current connection of D+/D-pin is CPU input circuit, and also namely initial input circuit is CPU input circuit.The target input circuit obtained due to smart mobile phone is CPU input circuit, then determine that initial input circuit is identical with target input circuit, now D+/D-pin is continued to be connected to CPU input circuit, thus USB earphone can support OTG equipment again to make USB interface to support, achieves multiplexing functions.
The method that the USB (universal serial bus) of this preferred embodiment is multiplexing, due to when smart mobile phone determination External Access Equipment is OTG equipment, determine that corresponding data input circuit is CPU input circuit, current to this CPU input circuit and the D+/D-pin data input circuit be connected is compared, if both are not identical, then the data input circuit of current connection is switched to CPU input circuit, otherwise do not switch.
Please refer to Fig. 4, the structural representation of the device that the USB (universal serial bus) that Fig. 4 provides for the embodiment of the present invention four is multiplexing.The device 40 that the USB (universal serial bus) of this preferred embodiment is multiplexing comprises: display module 41, receiver module 42, adjusting module 43;
Display module 41, for when detecting that USB (universal serial bus) has external equipment to access, control selected by display device on a terminal screen, and this equipment choice control is for pointing out user select target facility information in its default facility information list shown;
Receiver module 42, for passing through this equipment choice control receiving target facility information;
Adjusting module 43, the data input circuit that the data line pin for adjusting this USB (universal serial bus) according to this target device information connects, to make this USB (universal serial bus) and this external equipment, the match is successful.
As shown in Figure 5, this adjusting module 43 comprises: determine submodule 431 and adjustment submodule 432;
Determining submodule 431, obtaining target input circuit by the data input circuit that this data line pin is corresponding for determining according to this target device information;
Adjustment submodule 432, for adjusting the data input circuit that this data line pin connects according to this target input circuit.
This adjustment submodule 432, specifically for:
Obtain the data input circuit of the current connection of this data line pin, obtain initial input circuit;
Judge that whether this initial input circuit is identical with this target input circuit, obtains judged result;
If it is not identical with this target input circuit that this judged result is this initial input circuit, then this data line pin is switched to this target input circuit from this initial input circuit and connect.
This determines submodule 431, specifically for:
The default facility information corresponding with this target device information is searched in presetting database;
Obtain the process path that this default facility information is corresponding, obtain this target input circuit.
This display module 41, also for:
Whether the change in voltage detecting this recognition of devices pin meets pre-conditioned;
If detect, the change in voltage of this recognition of devices pin meets that this is pre-conditioned, then determine that this USB (universal serial bus) has external equipment to access.
During concrete enforcement, above modules can realize as independently entity, and can carry out combination in any yet, realize as same or several entities, the concrete enforcement of above modules see embodiment of the method above, can not repeat them here.
The device that the USB (universal serial bus) of this preferred embodiment is multiplexing, due to control can be selected according to display device, determine the type of External Access Equipment, and determine corresponding data input circuit according to the type of External Access Equipment, according to established data input circuit, the data input circuit that D+/D-pin connects correspondingly is adjusted afterwards, to realize the multiplexing functions of USB interface.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, storage medium can comprise: ROM (read-only memory) (ROM, ReadOnlyMemory), random access memory (RAM, RandomAccessMemory), disk or CD etc.
The multiplexing method and apparatus of a kind of USB (universal serial bus) provided the embodiment of the present invention is above described in detail, apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for those skilled in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the method that USB (universal serial bus) is multiplexing, is characterized in that, comprising:
When detecting that USB (universal serial bus) has external equipment to access, control selected by display device on a terminal screen, and described equipment choice control is for pointing out user select target facility information in its default facility information list shown;
By described equipment choice control receiving target facility information;
Adjust the data input circuit of the data line pin connection of described USB (universal serial bus) according to described target device information, to make described USB (universal serial bus) and described external equipment, the match is successful.
2. the method that USB (universal serial bus) according to claim 1 is multiplexing, is characterized in that, the described step adjusting the data input circuit of described data line pin connection according to described target device information comprises:
Determine to obtain target input circuit by the data input circuit that described data line pin is corresponding according to described target device information;
According to described target input circuit, the data input circuit that described data line pin connects is adjusted.
3. the method that USB (universal serial bus) according to claim 2 is multiplexing, is characterized in that, describedly comprises the step that the data input circuit that described data line pin connects adjusts according to described target input circuit:
Obtain the data input circuit of the current connection of described data line pin, obtain initial input circuit;
Judge that whether described initial input circuit is identical with described target input circuit, obtains judged result;
If it is not identical with described target input circuit that described judged result is described initial input circuit, then described data line pin is switched to described target input circuit from described initial input circuit and connect.
4. the method that USB (universal serial bus) according to claim 2 is multiplexing, is characterized in that, describedly determines according to described target device information the data input circuit that described data line pin is corresponding, and the step obtaining target input circuit comprises:
The default facility information corresponding with described target device information is searched in presetting database;
Obtain the process path that described default facility information is corresponding, obtain described target input circuit.
5. the method that USB (universal serial bus) according to claim 1 is multiplexing, is characterized in that, described in detect that the step that USB (universal serial bus) has external equipment to access comprises:
Whether the change in voltage detecting described recognition of devices pin meets pre-conditioned;
It is described pre-conditioned if detect, the change in voltage of described recognition of devices pin meets, then determine that described USB (universal serial bus) has external equipment to access.
6. the device that USB (universal serial bus) is multiplexing, is characterized in that, comprising:
Display module, for when detecting that USB (universal serial bus) has external equipment to access, control selected by display device on a terminal screen, and described equipment choice control is for pointing out user select target facility information in its default facility information list shown;
Receiver module, for passing through described equipment choice control receiving target facility information;
Adjusting module, the data input circuit that the data line pin for adjusting described USB (universal serial bus) according to described target device information connects, to make described USB (universal serial bus) and described external equipment, the match is successful.
7. the device that USB (universal serial bus) according to claim 6 is multiplexing, is characterized in that, described adjusting module comprises:
Determining submodule, obtaining target input circuit by the data input circuit that described data line pin is corresponding for determining according to described target device information;
Adjustment submodule, for adjusting the data input circuit that described data line pin connects according to described target input circuit.
8. the device that USB (universal serial bus) according to claim 7 is multiplexing, is characterized in that, described adjustment submodule, specifically for:
Obtain the data input circuit of the current connection of described data line pin, obtain initial input circuit;
Judge that whether described initial input circuit is identical with described target input circuit, obtains judged result;
If it is not identical with described target input circuit that described judged result is described initial input circuit, then described data line pin is switched to described target input circuit from described initial input circuit and connect.
9. the device that USB (universal serial bus) according to claim 7 is multiplexing, is characterized in that, describedly determines submodule, specifically for:
The default facility information corresponding with described target device information is searched in presetting database;
Obtain the process path that described default facility information is corresponding, obtain described target input circuit.
10. the device that USB (universal serial bus) according to claim 6 is multiplexing, is characterized in that, described display module, also for:
Whether the change in voltage detecting described recognition of devices pin meets pre-conditioned;
It is described pre-conditioned if detect, the change in voltage of described recognition of devices pin meets, then determine that described USB (universal serial bus) has external equipment to access.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610115643.XA CN105573946B (en) | 2016-03-01 | 2016-03-01 | The method and device of Universal Serial Bus Interface multiplexing |
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| CN201610115643.XA CN105573946B (en) | 2016-03-01 | 2016-03-01 | The method and device of Universal Serial Bus Interface multiplexing |
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| CN105573946B CN105573946B (en) | 2019-03-01 |
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| CN110312180A (en) * | 2019-05-28 | 2019-10-08 | 晶晨半导体(上海)股份有限公司 | A method of using earphone base and USB OTG multiplexing functions |
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| Publication number | Publication date |
|---|---|
| CN105573946B (en) | 2019-03-01 |
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