CN105404600A - Method and apparatus giving consideration to USB eye pattern performance and OTG function - Google Patents

Method and apparatus giving consideration to USB eye pattern performance and OTG function Download PDF

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Publication number
CN105404600A
CN105404600A CN201510703554.2A CN201510703554A CN105404600A CN 105404600 A CN105404600 A CN 105404600A CN 201510703554 A CN201510703554 A CN 201510703554A CN 105404600 A CN105404600 A CN 105404600A
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China
Prior art keywords
usb
drive current
mobile terminal
external unit
usb drive
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Granted
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CN201510703554.2A
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CN105404600B (en
Inventor
王杰
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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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
    • 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
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
    • 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]

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Telephone Function (AREA)

Abstract

The invention discloses a method and an apparatus giving consideration to USB eye pattern performance and an OTG function. The method comprises: detecting whether an external device is connected to a mobile terminal through a USB interface or not; when the external device is connected to the mobile terminal, judging whether the mobile terminal serves as a slave device or a master device when communicating with the external device; when the mobile terminal serves as the slave device, setting a USB driving current according to a first USB driving current parameter; and when the mobile terminal serves as the master device, setting the USB driving current according to a second USB driving current parameter, wherein the first USB driving current parameter is determined according to the USB eye pattern performance, and the second USB driving current parameter is determined according to the OTG compatibility. According to the method and the apparatus, the USB transmission performance when the mobile terminal serves as the slave device is ensured and the OTG compatibility when the mobile terminal serves as the master device is ensured.

Description

Take into account method and the device of USB eye pattern performance and OTG function
Technical field
The embodiment of the present invention relates to communication technical field, particularly relates to a kind of method and the device of taking into account USB eye pattern performance and OTG function.
Background technology
Along with the development of intelligent mobile terminal, USB-OTG function becomes standard configuration, and well-known USB-OTG and common USB (UniversalSerialBus, USB (universal serial bus)) function is all realized by USB interface.Common USB function, mobile phone is as from equipment, and computing machine is as main equipment; And USB-OTG is another equipment of allowing mobile phone insert mobile phone as main equipment as from equipment just, thus make the file transfer between mobile terminal more convenient.Wherein, USB-OTG is the abbreviation of USBOnTheGo, is the technology that developed recently gets up, and Dec 18 calendar year 2001 is announced by USBImplementersForum (USB implementer forum), be mainly used in the connection between various different equipment or mobile device, carry out exchanges data.
Because mobile terminal screen size is increasing, general design is all that USB interface is placed on mobile phone lower end, master chip is in mobile phone upper end, thus cause USB cabling very long, simultaneously USB as contraposition interface can on signal wire ESD (Electro-Staticdischarge in parallel, Electro-static Driven Comb) device is to prevent electrostatic damage port, and synchronous signal line also has USB switching device, and these factors finally cause USB eye diagram quality to be difficult to meet the demands.USB is as the most frequently used interface of mobile phone, and its interface rate is very fast, if USB eye diagram quality bad may causing makes mistakes in data transmission procedure.
In order to promote USB eye diagram quality, conventional method improves USB drive current, and the good results are evident, as shown in Fig. 1 a, Fig. 1 b, Fig. 2 a and Fig. 2 b in improvement.But, for supporting the design of OTG function, impact can be brought on OTG compatibility by the improving countermeasure improving USB drive current, the recognition success rate of OTG may be reduced.Therefore it is conflicting for improving USB drive current to USB transmission and OTG transmission, while ensureing USB transmission performance, how to ensure that the compatibility of OTG is a problem needing to solve.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of method and the device of taking into account USB eye pattern performance and OTG function, to ensure the compatibility of OTG while ensureing USB transmission performance.
First aspect, embodiments provide a kind of method taking into account USB eye pattern performance and OTG function, described method comprises:
Whether detect has external unit to access mobile terminal by USB interface;
When there being external unit to access mobile terminal, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit;
As during from equipment when described mobile terminal communicates with described external unit, according to a USB drive current optimum configurations USB drive current;
When being as main equipment when described mobile terminal communicates with described external unit, according to the 2nd USB drive current optimum configurations USB drive current;
Wherein, a described USB drive current parameter is the USB drive current parameter determined according to USB eye pattern performance, and described 2nd USB drive current parameter is the USB drive current parameter determined according to OTG compatibility.
Second aspect, the embodiment of the present invention additionally provides a kind of device taking into account USB eye pattern performance and OTG function, and described device comprises:
Whether detection module, have external unit to access mobile terminal by USB interface for detecting;
Judge module, for when there being external unit to access mobile terminal, judges that described mobile terminal is as from equipment or as main equipment when communicating with described external unit;
First arranges module, for being as during from equipment when described mobile terminal communicates with described external unit, according to a USB drive current optimum configurations USB drive current;
Second arranges module, during for being as main equipment when described mobile terminal communicates with described external unit, according to the 2nd USB drive current optimum configurations USB drive current;
Wherein, a described USB drive current parameter is the USB drive current parameter determined according to USB eye pattern performance, and described 2nd USB drive current parameter is the USB drive current parameter determined according to OTG compatibility.
The embodiment of the present invention is by when external unit having been detected by USB interface access mobile terminal, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit, that corresponding USB drive current is set as main equipment or from equipment according to mobile terminal, namely when mobile terminal as from during equipment according to the USB drive current optimum configurations USB drive current determined according to USB eye pattern performance, when mobile terminal as during main equipment according to according to the 2nd USB drive current optimum configurations USB drive current determined of OTG compatibility, ensure that mobile terminal is as from USB transmission performance during equipment, ensure that mobile terminal is compatible as OTG during main equipment simultaneously.
Accompanying drawing explanation
Fig. 1 a is the analogous diagram of near-end USB eye pattern when not improving USB drive current in prior art;
Fig. 1 b is the analogous diagram of far-end USB eye pattern when not improving USB drive current in prior art;
Fig. 2 a is the analogous diagram by near-end USB eye pattern during raising USB drive current in prior art;
Fig. 2 b is the analogous diagram by far-end USB eye pattern during raising USB drive current in prior art;
Fig. 3 is a kind of process flow diagram taking into account the method for USB eye pattern performance and OTG function that the embodiment of the present invention one provides;
Fig. 4 is a kind of process flow diagram taking into account the method for USB eye pattern performance and OTG function that the embodiment of the present invention two provides;
Fig. 5 is a kind of structural representation taking into account the device of USB eye pattern performance and OTG function that the embodiment of the present invention three provides.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.
Embodiment one
Fig. 3 is a kind of process flow diagram taking into account the method for USB eye pattern performance and OTG function that the embodiment of the present invention one provides, the present embodiment is applicable to the compatibility that the mobile terminal with USB-OTG function ensures OTG while ensureing USB eye pattern performance, the method can be performed by the mobile terminal with USB-OTG function, specifically comprises the steps:
Whether step 310, detect and have external unit to access mobile terminal by USB interface.
Whether mobile terminal, by detecting the signal intensity of USB hardware circuit, detects and has external unit to access this mobile terminal by USB interface.
Wherein, detect and whether have external unit to access mobile terminal by USB interface, preferably include:
By detecting the level change of USB interface, detecting and whether having external unit to access mobile terminal by USB interface.
When there being external unit by USB interface access mobile terminal, the level of USB interface can be caused to change, level according to this USB interface changes, just can detect that external unit has accessed mobile terminal by USB interface, when the level of USB interface does not change, represent and do not have external unit to access this mobile terminal by USB interface.
Step 320, when there being external unit to access mobile terminal, judges that described mobile terminal is as from equipment or as main equipment when communicating with described external unit.
When external unit access mobile terminal having been detected, when judging that described mobile terminal communicates with described external unit, described mobile terminal has been as from equipment or as main equipment.Specifically can by judging have the level situation of change of the USB interface chip of OTG function, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit.
When judging that described mobile terminal communicates with described external unit, be as from equipment or as main equipment, specifically comprise:
By judging USBID pin level, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit.
The mobile terminal with USB-OTG function adds the 5th pin-ID, the external unit accessed for being identified by USB interface is as main equipment or from equipment, thus configure oneself as corresponding from equipment or main equipment, be specially, when mobile terminal detects ID pin ground connection, represent that the external unit accessing mobile terminal is as USB device, namely from equipment, now self is configured to USB main equipment by mobile terminal; And when mobile terminal detects that ID pin is unsettled, represent that the external unit of access mobile terminal is as USB main equipment, now self is configured to USB device by mobile terminal, namely from equipment.
Step 330 is as during from equipment when described mobile terminal communicates with described external unit, according to a USB drive current optimum configurations USB drive current.
Wherein, a described USB drive current parameter is the USB drive current parameter determined according to USB eye pattern performance, namely be as during from equipment when mobile terminal communicates with described external unit, then ensure that the eye pattern of USB is functional, the signal quality of USB eye pattern is made to reach best, guarantee USB data transmission quality, make the intersymbol interference between data minimum.
Step 340, when being as main equipment when described mobile terminal communicates with described external unit, according to the 2nd USB drive current optimum configurations USB drive current.
Wherein, described 2nd USB drive current parameter is the USB drive current parameter determined according to OTG compatibility, when being namely as main equipment when mobile terminal communicates with described external unit, then ensures that OTG is compatible, namely ensure the recognition success rate of OTG, can successfully identify corresponding equipment.
Wherein, a described USB drive current parameter is greater than described 2nd USB drive current parameter, thus ensure the eye pattern performance of USB and the identification compatibility of OTG, a described USB drive current parameter is relevant to the processor of mobile terminal with the setting of the 2nd USB drive current parameter, different processors, corresponding drive current parameter may be different, but general satisfaction the one USB drive current parameter is greater than the 2nd USB drive current parameter.
The present embodiment is by when external unit having been detected by USB interface access mobile terminal, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit, when as during from equipment, according to the USB drive current optimum configurations USB drive current determined according to USB eye pattern performance, when as during main equipment according to according to the 2nd USB drive current optimum configurations USB drive current determined of OTG compatibility, that corresponding USB drive current is set as main equipment or from equipment according to mobile terminal, ensure that mobile terminal is as from USB transmission performance during equipment, ensure that mobile terminal is compatible as OTG during main equipment simultaneously.
Embodiment two
Fig. 4 is a kind of process flow diagram taking into account the method for USB eye pattern performance and OTG function that the embodiment of the present invention two provides, and the present embodiment is optimized embodiment one, specifically comprises the steps:
Whether step 410, detect and have external unit to access mobile terminal by USB interface.
Step 420, when there being external unit to access mobile terminal, judges that described mobile terminal is as from equipment or as main equipment when communicating with described external unit.
Step 430 is as during from equipment when described mobile terminal communicates with described external unit, according to a USB drive current optimum configurations USB drive current.
Step 440, when being as main equipment when described mobile terminal communicates with described external unit, according to the 2nd USB drive current optimum configurations USB drive current.
Step 450, when detecting that described external unit extracts the USB interface of mobile terminal, according to a USB drive current optimum configurations USB drive current.
Enter when school communicates when described mobile terminal and described external unit be as main equipment time, after the 2nd USB drive current optimum configurations USB drive current, whether the described external unit of real-time detection extracts the USB interface of this mobile terminal, when detecting that described external unit extracts the USB interface of this mobile terminal, it is a USB drive current parameter by USB drive current optimum configurations, because when external unit inserts mobile terminal, this mobile terminal major part is as from equipment, so acquiescence USB drive current parameter is a USB drive current parameter, ensure the eye pattern performance of USB.
The present embodiment is by when external unit having been detected by USB interface access mobile terminal, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit, when as during from equipment, according to the USB drive current optimum configurations USB drive current determined according to USB eye pattern performance, when as during main equipment according to according to the 2nd USB drive current optimum configurations USB drive current determined of OTG compatibility, when detecting that described external unit extracts the USB interface of mobile terminal, according to a USB drive current optimum configurations USB drive current, that corresponding USB drive current is set as main equipment or from equipment according to mobile terminal, ensure that mobile terminal is as from USB transmission performance during equipment, ensure that mobile terminal is compatible as OTG during main equipment simultaneously, compared with embodiment one, when mobile terminal is as main equipment, after the 2nd USB drive current optimum configurations USB drive current, when detecting that external unit extracts mobile terminal, be the first drive current parameter by USB drive current optimum configurations, namely give tacit consent to mobile terminal when communicating with external unit as USB from equipment, because as from equipment when most of mobile terminal and external device communication, thus this step of configuration USB drive current parameter can be omitted, thus save time.
Embodiment three
Fig. 5 is a kind of structural representation taking into account the device of USB eye pattern performance and OTG function that the embodiment of the present invention three provides, as shown in Figure 5, the device taking into account USB eye pattern performance and OTG function described in the present embodiment comprises detection module 510, judge module 520, first arranges module 530 and second and arranges module 540.
Wherein, whether detection module 510 has external unit to access mobile terminal by USB interface for detecting;
Judge module 520, for when there being external unit to access mobile terminal, judges that described mobile terminal is as from equipment or as main equipment when communicating with described external unit;
First arranges module 530 for being as during from equipment when described mobile terminal communicates with described external unit, according to a USB drive current optimum configurations USB drive current;
Second when arranging module 540 for being as main equipment when described mobile terminal communicates with described external unit, according to the 2nd USB drive current optimum configurations USB drive current;
Wherein, a described USB drive current parameter is the USB drive current parameter determined according to USB eye pattern performance, and described 2nd USB drive current parameter is the USB drive current parameter determined according to OTG compatibility.
Wherein, a described USB drive current parameter is preferably greater than described 2nd USB drive current parameter.
Preferably, described judge module specifically for:
By judging USBID pin level, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit.
Preferably, described detection module specifically for:
By detecting the level change of USB interface, detecting and whether having external unit to access mobile terminal by USB interface.
Preferably, this device taking into account USB eye pattern performance and OTG function also comprises:
3rd arranges module, for when being as main equipment when described mobile terminal communicates with described external unit, after the 2nd USB drive current optimum configurations USB drive current, when detecting that described external unit extracts the USB interface of mobile terminal, according to a USB drive current optimum configurations USB drive current.
The said goods can perform the method that any embodiment of the present invention provides, and possesses the corresponding functional module of manner of execution and beneficial effect.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.

Claims (10)

1. take into account a method for USB eye pattern performance and OTG function, it is characterized in that, described method comprises:
Whether detect has external unit to access mobile terminal by USB interface;
When there being external unit to access mobile terminal, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit;
As during from equipment when described mobile terminal communicates with described external unit, according to a USB drive current optimum configurations USB drive current;
When being as main equipment when described mobile terminal communicates with described external unit, according to the 2nd USB drive current optimum configurations USB drive current;
Wherein, a described USB drive current parameter is the USB drive current parameter determined according to USB eye pattern performance, and described 2nd USB drive current parameter is the USB drive current parameter determined according to OTG compatibility.
2. method according to claim 1, is characterized in that, a described USB drive current parameter is greater than described 2nd USB drive current parameter.
3. method according to claim 1, is characterized in that, when judging that described mobile terminal communicates with described external unit, is as from equipment or as main equipment, comprises:
By judging USBID pin level, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit.
4. whether method according to claim 1, is characterized in that, detect and have external unit to access mobile terminal by USB interface, comprising:
By detecting the level change of USB interface, detecting and whether having external unit to access mobile terminal by USB interface.
5., according to the arbitrary described method of claim 1-4, it is characterized in that, when being as main equipment when described mobile terminal communicates with described external unit, after the 2nd USB drive current optimum configurations USB drive current, also comprising:
When detecting that described external unit extracts the USB interface of mobile terminal, according to a USB drive current optimum configurations USB drive current.
6. take into account a device for USB eye pattern performance and OTG function, it is characterized in that, described device comprises:
Whether detection module, have external unit to access mobile terminal by USB interface for detecting;
Judge module, for when there being external unit to access mobile terminal, judges that described mobile terminal is as from equipment or as main equipment when communicating with described external unit;
First arranges module, for being as during from equipment when described mobile terminal communicates with described external unit, according to a USB drive current optimum configurations USB drive current;
Second arranges module, during for being as main equipment when described mobile terminal communicates with described external unit, according to the 2nd USB drive current optimum configurations USB drive current;
Wherein, a described USB drive current parameter is the USB drive current parameter determined according to USB eye pattern performance, and described 2nd USB drive current parameter is the USB drive current parameter determined according to OTG compatibility.
7. device according to claim 6, is characterized in that, a described USB drive current parameter is greater than described 2nd USB drive current parameter.
8. device according to claim 6, is characterized in that, described judge module specifically for:
By judging USBID pin level, judge that described mobile terminal is as from equipment or as main equipment when communicating with described external unit.
9. device according to claim 6, is characterized in that, described detection module specifically for:
By detecting the level change of USB interface, detecting and whether having external unit to access mobile terminal by USB interface.
10., according to the arbitrary described device of claim 6-9, it is characterized in that, also comprise:
3rd arranges module, for when being as main equipment when described mobile terminal communicates with described external unit, after the 2nd USB drive current optimum configurations USB drive current, when detecting that described external unit extracts the USB interface of mobile terminal, according to a USB drive current optimum configurations USB drive current.
CN201510703554.2A 2015-10-23 2015-10-23 Take into account the method and device of USB eye patterns performance and OTG functions Active CN105404600B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106527639A (en) * 2016-09-21 2017-03-22 奇酷互联网络科技（深圳）有限公司 OTG (On-The-Go) connection control method, master equipment and terminal equipment
CN109921959A (en) * 2019-03-22 2019-06-21 维沃移动通信有限公司 A kind of parameter regulation means and communication equipment
CN111858430A (en) * 2020-07-07 2020-10-30 上海龙旗科技股份有限公司 OTG optimization method and system of mobile terminal
CN112256610A (en) * 2020-10-19 2021-01-22 Tcl通讯（宁波）有限公司 Connection control method, system, storage medium and mobile terminal

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US20010034807A1 (en) * 2000-04-25 2001-10-25 Kabushiki Kaisha Mobile communication terminal device
CN103744821A (en) * 2014-01-10 2014-04-23 广东欧珀移动通信有限公司 Method and device for realizing USB OTG (Universal Serial Bus On-The-Go) function of mobile terminal
CN104750226A (en) * 2013-12-31 2015-07-01 联芯科技有限公司 USB (universal serial bus) OTG (on-the-go) pattern recognition system and USB OTG pattern recognition method

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US20010034807A1 (en) * 2000-04-25 2001-10-25 Kabushiki Kaisha Mobile communication terminal device
CN104750226A (en) * 2013-12-31 2015-07-01 联芯科技有限公司 USB (universal serial bus) OTG (on-the-go) pattern recognition system and USB OTG pattern recognition method
CN103744821A (en) * 2014-01-10 2014-04-23 广东欧珀移动通信有限公司 Method and device for realizing USB OTG (Universal Serial Bus On-The-Go) function of mobile terminal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106527639A (en) * 2016-09-21 2017-03-22 奇酷互联网络科技（深圳）有限公司 OTG (On-The-Go) connection control method, master equipment and terminal equipment
CN106527639B (en) * 2016-09-21 2019-10-25 奇酷互联网络科技（深圳）有限公司 OTG connection control method, main equipment and terminal device
CN109921959A (en) * 2019-03-22 2019-06-21 维沃移动通信有限公司 A kind of parameter regulation means and communication equipment
CN111858430A (en) * 2020-07-07 2020-10-30 上海龙旗科技股份有限公司 OTG optimization method and system of mobile terminal
CN112256610A (en) * 2020-10-19 2021-01-22 Tcl通讯（宁波）有限公司 Connection control method, system, storage medium and mobile terminal

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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18

Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd.

Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18

Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd.