CN102394098A - USB (Universal Serial Bus) flash disc with function of OTG (On-The-Go) reading - Google Patents
USB (Universal Serial Bus) flash disc with function of OTG (On-The-Go) reading Download PDFInfo
- Publication number
- CN102394098A CN102394098A CN2011103122261A CN201110312226A CN102394098A CN 102394098 A CN102394098 A CN 102394098A CN 2011103122261 A CN2011103122261 A CN 2011103122261A CN 201110312226 A CN201110312226 A CN 201110312226A CN 102394098 A CN102394098 A CN 102394098A
- Authority
- CN
- China
- Prior art keywords
- usb
- otg
- usb flash
- flash disk
- equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
A USB (Universal Serial Bus) flash disc with the function of OTG (On-The-Go) reading is characterized in that a USB male connector is arranged at one end of the USB flash disc, a mini USB, a micro USB connector, a USB female connector or a USB male connector is arranged at the other end of the USB flash disc, and the connectors are all in data connection with a storage chip in the USB flash disc. The USB flash disc with the function of OTG reading provided by the invention has the advantages that the USB flash disc can be directly read by mobile phones, digital cameras, MP3 players and other electronic devices with the function of OTG reading, so as to achieve convenience in use and dispense with an OTG connecting wire.
Description
Technical field
The present invention relates to a kind of USB flash disk of the OTG of having read functions, belong to the technical field of memory storage.
Background technology
OTG is the abbreviation of On-The-Go, is the technology that developed recently gets up, and is announced by USB Implementers Forum Dec 18 calendar year 2001, is mainly used in the connection between various equipment or mobile device, carries out exchanges data.Particularly PDA, mobile phone, consumer devices.Change like the multiple different systems connectors of equipment room such as digital camera, video camera, printer, the inconvenience of exchanges data between the storage card of multiple standard.
The development of USB technology; Make PC and peripheral equipment the equipment of various data rates to be linked together through the manufacturing cost of plain mode, appropriateness, above-mentioned we mention application, can pass through usb bus; As the periphery of PC, under the control of PC, carry out exchanges data.But this exchanged form easily, in case left PC, each equipment room can't utilize the USB mouth to operate, because the neither one slave unit can serve as the same Host of PC.
The OTG technology is exactly to be implemented under the situation that does not have Host, realizes that the data between slave unit transmit.For example digital camera is directly connected on the printer, through the OTG technology, connects the USB mouth of two equipment rooms, and the photograph of taking is printed immediately; Also can the data in the digital camera be sent to through OTG on the portable hard drive of USB interface.
Birth since USB host-host protocol in 1996; And with its advantage very fast fashionable all computer peripheral equipments and digital equipment; USB device is divided into HOST (main equipment) and SLAVE (slave unit) as you know; Have only the transmission that when a HOST is connected with a SLAVE, could realize data, OTG equipment is exactly to be that our " EX " can serve as HOST, also can serve as SLAVE.
USB combines with flash memory, and creativeness has expedited the emergence of widely popular movable storage device-USB flash disk at present.
Equipment and data transfer between devices when the release of USB OTG technology then can realize not having main frame.For example: digital camera can directly be connected with printer and photograph print, thereby has expanded USB The Application of Technology scope.
The USB otg standard has increased power management (saving power consumption) function on the basis of complete compatible USB2.0 standard, its permission equipment both can be used as main frame, also can be used as peripheral hardware operation (dual-purpose OTG).The OTG double-duty plant meets the USB2.0 standard fully, and certain main frame detectability can be provided, and supports main frame circular order agreement (HNP) and session request agreement (SRP).In OTG, Initial master equipment is called A equipment, and peripheral hardware is called B equipment.The connected mode of available cable decides initial roles.Shown in Figure 2 is the synoptic diagram of confirming default host with the 5th ID pin, and double-duty plant uses novel mini-AB socket, thereby makes mini-A plug, mini-B plug and mini-AB socket increase the 5th pin (ID), to be used to discern different cable end points.ID pin ground connection in the mini-A plug, the ID pin in the mini-B plug is floating empty.When OTG Equipment Inspection during to the ID pin of ground connection, the expression acquiescence be A equipment (main frame), detect floating this equipment of ID pin and then think B equipment (peripheral hardware).System is in case after connecting, the role of OTG can also change.
Main frame and peripheral hardware adopt new HNP, and A equipment partly provides the VBUS power supply as default host, and when the equipment that detected connects reset bus, enumerate and dispose B equipment.Otg standard is that second New Deal that USB increases is called session request agreement (SRP).SRP allows B device request A equipment to open the VBUS power supply and start once dialogue.An OTG dialogue can provide the time of VBUS power supply to confirm (annotate: A equipment is always the VBUS power supply, even as peripheral hardware) through A equipment.Also can finish one through A device shutdown VBUS power supply and dodge session to save power consumption, this is very important in the powered battery product.For example, when two cell phones were intercoursed information through connection, a mini-A end that is connected the expense electricity was an A equipment, is defaulted as main frame.Another is a B equipment, is defaulted as peripheral hardware.When not needing usb communication, A equipment can be closed the VBUS line, and B equipment will detect this state and get into merit low consumption pattern this moment.
Need on basic USB peripheral hardware, add circuit when making up the OTG function, the USB controller in the circuit can be a microprocessor and USB SIE (serial ports engine), also can be integrated μ P/USB chip or the ASIC that links to each other with the USB transceiver.For providing the external unit of power supply, bus needs one road 3.3V voltage stabilizing output supply voltage, so that be that logical circuit provides power supply with the 1500 Ω resistance that are connected D+, D-pin.Can send the signal that equipment has connected to main frame through the pull-up resistor on D+, the D-pin, and the operating rate of indicating equipment.Resistance is pulled to D+ and representes full speed running, and resistance is pulled to D-and representes slow running.Other end points (the 15k Ω pull down resistor that comprises D+ and D-) is used to detect the state of pull-up resistor.Because the USB design demand provides the hot plug function.Therefore, its esd protection circuit is mainly used in to D+, D-and VBUS pin protection is provided.
In order to increase the double-purpose functional of OTG, must expand transceiver function and make OTG equipment both can be used as the main frame use, also can be used as peripheral hardware and use.Most of circuit of the required interpolation of transceiver are used for the management of VBUS pin.As main frame, it must provide 5V, output current can reach the power supply of 8mA.
As mentioned above, USB combines with flash memory, and creativeness has expedited the emergence of widely popular movable storage device-USB flash disk at present.USB flash disk is because its characteristics portable, capacious; Be widely used in OTG especially and read, but the problem that exists aspect reading at OTG at present is, as the electronic equipments such as mobile phone, digital camera, MP3 with OTG function are when reading USB flash disk; The OTG connecting line that often needs a Gent system; This OTG connecting line can be connected electronic equipment with USB flash disk or portable hard drive, card reader etc., but the use of this data line is cumbersome, does not also have directly to read at present the equipment of USB flash disk.
Summary of the invention
The technical matters that the present invention will solve is: the electronic equipment such as mobile phone, digital camera, MP3 with OTG function is when reading USB flash disk; The OTG connecting line that often needs a Gent system; This OTG connecting line can be connected electronic equipment with USB flash disk or portable hard drive, card reader etc.; But the use of this data line is cumbersome, does not also have directly to read at present the equipment of USB flash disk.
In order to solve the problems of the technologies described above, the invention discloses USB flash disk with OTG read functions, particular content is following:
A kind of USB flash disk with OTG read functions; It is characterized in that: said USB flash disk has the USB male joint at the one of which end; Have miniUSB or microUSB joint or USB female joint or USB male joint at its other end, these joints all with USB flash disk in storage chip form data and be connected.
About male joint and female joint, be the joint that is used for " insertion " and " being inserted into " naturally, this is the known technology of this area, no longer sets forth at this.
Preferably, said USB flash disk all has the lid of protection joint at its two ends.
Preferably, said lid is processed by transparent material.
Beneficial effect of the present invention is: utilizes the USB flash disk of the OTG of having read functions of the present invention, can make electronic equipments such as mobile phone with OTG read functions, digital camera, MP3 directly read USB flash disk, and easy to use, no longer need the OTG connecting line.
Description of drawings
Accompanying drawing 1 is the structural representation of the USB flash disk of the OTG of having read functions of the present invention;
Reference numeral 1-lid wherein, 2-USB male joint, 3-miniUSB joint.
Embodiment
Combine accompanying drawing that the present invention is further described at present.
As shown in Figure 1, a kind of USB flash disk with OTG read functions is characterized in that: said USB flash disk has USB male joint 2 at the one of which end, has miniUSB3 at its other end, these joints all with USB flash disk in storage chip form data and be connected.
About male joint and female joint, be the joint that is used for " insertion " and " being inserted into " naturally, this is the known technology of this area, no longer sets forth at this.
Preferably, said USB flash disk all has the lid 1 of protection joint at its two ends.
Preferably, said lid 1 is processed by transparent material.
Beneficial effect of the present invention is: utilizes the USB flash disk of the OTG of having read functions of the present invention, can make electronic equipments such as mobile phone with OTG read functions, digital camera, MP3 directly read USB flash disk, and easy to use, no longer need the OTG connecting line.
Claims (3)
1. USB flash disk with OTG read functions; It is characterized in that: said USB flash disk has the USB male joint at the one of which end; Have miniUSB or microUSB joint or USB female joint or USB male joint at its other end, these joints all with USB flash disk in storage chip form data and be connected.
2. the USB flash disk with OTG read functions as claimed in claim 1 is characterized in that: said USB flash disk all has the lid of protection joint at its two ends.
3. the USB flash disk with OTG read functions as claimed in claim 2 is characterized in that: said lid is processed by transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103122261A CN102394098A (en) | 2011-10-11 | 2011-10-11 | USB (Universal Serial Bus) flash disc with function of OTG (On-The-Go) reading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103122261A CN102394098A (en) | 2011-10-11 | 2011-10-11 | USB (Universal Serial Bus) flash disc with function of OTG (On-The-Go) reading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102394098A true CN102394098A (en) | 2012-03-28 |
Family
ID=45861371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103122261A Pending CN102394098A (en) | 2011-10-11 | 2011-10-11 | USB (Universal Serial Bus) flash disc with function of OTG (On-The-Go) reading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102394098A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102663465A (en) * | 2012-05-03 | 2012-09-12 | 复旦大学 | Card type USB interface information storing and reading electronic name card |
| CN102799829A (en) * | 2012-07-27 | 2012-11-28 | 郑州信大捷安信息技术股份有限公司 | E-bank second-generation U-shield interface supporting multi-types of mobile devices and connection method thereof |
| WO2016183843A1 (en) * | 2015-05-21 | 2016-11-24 | 周正贤 | Removable storage device, and application method therefor on intelligent terminal |
| CN107231462A (en) * | 2017-05-26 | 2017-10-03 | 北京小米移动软件有限公司 | The test device of terminal |
| WO2017190412A1 (en) * | 2016-05-05 | 2017-11-09 | 深圳捷仕科技有限公司 | Otg device |
-
2011
- 2011-10-11 CN CN2011103122261A patent/CN102394098A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102663465A (en) * | 2012-05-03 | 2012-09-12 | 复旦大学 | Card type USB interface information storing and reading electronic name card |
| CN102663465B (en) * | 2012-05-03 | 2015-03-04 | 复旦大学 | Card type USB interface information storing and reading electronic name card |
| CN102799829A (en) * | 2012-07-27 | 2012-11-28 | 郑州信大捷安信息技术股份有限公司 | E-bank second-generation U-shield interface supporting multi-types of mobile devices and connection method thereof |
| WO2016183843A1 (en) * | 2015-05-21 | 2016-11-24 | 周正贤 | Removable storage device, and application method therefor on intelligent terminal |
| WO2017190412A1 (en) * | 2016-05-05 | 2017-11-09 | 深圳捷仕科技有限公司 | Otg device |
| CN107231462A (en) * | 2017-05-26 | 2017-10-03 | 北京小米移动软件有限公司 | The test device of terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1692641B1 (en) | Efficient connection between modules of removable eletronic circuit cards | |
| CN2938223Y (en) | OTG device of USB | |
| CN102082373B (en) | Chip-on-board (COB) storing device | |
| KR101416193B1 (en) | Universal serial bus memory device and method for manufacuring thereof | |
| CN102394098A (en) | USB (Universal Serial Bus) flash disc with function of OTG (On-The-Go) reading | |
| KR20040022276A (en) | USB system having card type USb interface connector | |
| CN103137178A (en) | Novel multifunctional universal serial bus (USB) flash disk | |
| TWI322535B (en) | Adapter element, conversion apparatus and conversion method | |
| CN202872142U (en) | Multifunctional USB (Universal Serial Bus) data line | |
| CN203300228U (en) | USB (Universal Serial Bus) disk with data switching function | |
| CN102544919B (en) | Cable | |
| CN103455465A (en) | USB (universal serial bus) device | |
| CN202307150U (en) | U disk with OTG (On-The-Go) reading function | |
| EP2383860B1 (en) | Rapid charging apparatus | |
| TWI447585B (en) | Apparatus of storage medium for interfacing both host and mobile device | |
| CN202816390U (en) | Micro USB (universal serial bus) plug type storage disc | |
| KR20150069659A (en) | Usb gender | |
| CN102544920A (en) | Cable | |
| CN102074862A (en) | Connector of power adapter | |
| CN204706725U (en) | A kind of charging data line | |
| CN203055453U (en) | Novel multifunctional USB (Universal Serial Bus) disc | |
| CN201898261U (en) | All-in-one connector | |
| CN202995718U (en) | OTG (on-the-go) data card reading line | |
| CN103218328A (en) | Storage device used for connecting USB mainframe and USB OTG (Universal Serial Bus On-The-Go) device | |
| CN215868637U (en) | Mobile hard disk cartridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120328 |