CN2865169Y

CN2865169Y - Mobile phone with USB storage function

Info

Publication number: CN2865169Y
Application number: CNU2005201473827U
Authority: CN
Inventors: 佟长达
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2005-12-31
Filing date: 2005-12-31
Publication date: 2007-01-31
Anticipated expiration: 2015-12-31

Abstract

The utility model provides a mobile phone with USB saving function, comprising an on-line memory, a USB connector, a USB controller, and a disk chip. The USB connector is at side of the phone set, connected with the USB controller through a signal line. The USB controller is connected with the on-line memory, receives and sends the data saved in the memory, which is connected with the disk chip. The mobile phone can be used as a mobile memory, is characterized by reliable saving, easy reading and writing, durablity, plug and play, and high bus accessing speed, etc.

Description

A kind of mobile phone with USB memory function

Technical field

The utility model relates to a kind of Multi-featured Mobile Terminal equipment technical field, particularly a kind of mobile terminal device with USB memory function.

Background technology

USB is the abbreviation of English Universal Serial Bus, and Chinese implication is " USB ".It is not a kind of new bus standard, but is applied in the new interface technology in PC field.As far back as nineteen ninety-five, just there is PC to have USB interface, but owing to lack the support of software and hardware device, the USB mouth of these PCs all is idle not usefulness.1997, Microsoft begins form with plug-in module in WIN95OSR2 (WIN97) provide support to USB, along with Microsoft's built-in support module to USB interface in Windows98, add day by day increasing of USB device after 1998, USB has progressively come into the practical stage.

The interface that computer system connects ancillary equipment there is no unified standard, as the parallel interface of PS/2 interface, 25 pins, serial line interface etc.The interface that USB is then different with these is united, and uses one 4 pin plug as standard plug.Can all peripheral hardwares be coupled together by this standard plug, and can not lose bandwidth.

In the USB standard USB is divided into five parts: controller, controller driver, USB chip driver program, USB device and at client's driver of different USB device.

According to the difference of equipment to system resource requirements, four kinds of different data transfer modes in the USB standard, have been stipulated: transmission means when waiting (Isochronous), interruption transmission means (Interrupt), control transmission mode (Control) and batch (Bulk) transmission means, these transmission meanss respectively have characteristics, are respectively applied for different places.

Along with popularizing of the PC of a large amount of support USB, the standard interface that USB progressively becomes PC has been trend of the times, and the equipment that uses USB interface is also in development with surprising rapidity.

Along with progressively popularizing of mobile phone, some mobile phone users occurred and wished to use the demand of mobile phone as movable storage device, the utility model proposes a kind of mobile phone of the USB of having memory function, can be as memory device movably, have preserve reliable, read-write is convenient, not fragile, plug and play, characteristics such as bus access speed is fast, a tractor serves several purposes has made things convenient for the user to portably use.

The utility model content

Technical problem to be solved in the utility model has been to provide a kind of mobile phone of the USB of having memory function, as memory device movably, can preserve data reliably, reads and writes data easily, and supports plug and play, and is not fragile.

For solving the problems of the technologies described above, the utility model provides a kind of mobile phone of the USB of having memory function, comprise: random asccess memory, USB connector, USB controller, disk chip, described USB connector is positioned at the mobile phone side, link to each other with the USB controller by holding wire, the USB controller links to each other with described random asccess memory, and transmitting-receiving is stored in the data in the random asccess memory, and described random asccess memory links to each other with described disk chip.

Described USB connector can be positioned at the bottom of mobile phone.

Described USB connector can have four lines: power line, ground wire, D+ and D-differential signal are right.

Described USB connector can pair link to each other with described USB controller by described differential signal.

Described random asccess memory can link to each other with described disk chip with data/address bus by address bus.

Described random asccess memory can be integrated in the mobile phone primary processor with described USB controller.

Described primary processor can link to each other with described disk chip with data/address bus by address bus.

Use the utlity model has the mobile phone of USB memory function, can be used as mobile memory device, stores, carries data file, can realize the reliable preservation and the convenient read-write of data file, and not fragile, supports plug and play, and is easy to carry.

Description of drawings

Fig. 1 is according to the described hardware structure diagram with mobile phone of USB memory function of the utility model embodiment;

Fig. 2 is according to the described workflow diagram with mobile phone of USB memory function of the utility model embodiment.

Embodiment

As shown in Figure 1, for according to the described hardware structure diagram of the utility model embodiment with mobile phone of USB memory function, comprise: main equipment 101, mobile phone bottom connector 102, processor 103, Diskonchip chip 104, USB controller 105, sdram memory 106, FLASH flash memory 107.

Main equipment 101 has four lines to link to each other with mobile phone bottom connector 102, and promptly so-called " USB ", wherein, VBUS is a power line, provides power supply by this line; GND is a ground signal, and D+ and D-are that differential signal is right.

When mobile phone was connected to the port of main equipment 101 as the USB memory device, at first the USB controller 105 of processor 103 inside carried out electrification reset and other initialization operation.Afterwards, by certain auxiliary circuit, to draw on the signal level, confirm that according to this level mobile phone is connected on the main equipment 3.0V PC USB as the USB memory device, main equipment 101 sends a bus reset signal immediately, begin to send successively each USB standard request then, enter enumeration stage.

Data read or send by USB controller 105, and the data that read from the main equipment end are saved in the sdram memory 106, then by address and data/address bus asynchronous write DiskOnChip chip 104; Need be written to the data of main equipment end, read in the sdram memory 106, send by USB controller 105 then by bus.

As shown in Figure 2, for according to the described workflow diagram of the utility model embodiment, may further comprise the steps with mobile phone of USB memory function:

After (step 201) mobile phone was inserted on the main equipment USB interface, the USB master controller was promptly searched for mobile phone, and required equipment that corresponding descriptor is provided, and the control identification module starts USB Mass-storage protocol processes thread.After cognitive phase was finished, main frame and equipment carried out exchanges data, if between the Bulk-Only agreement selected, so, all data of USB and equipment room are all transmitted by Bulk-In and Bulk-Out, no longer by controlling any data of endpoint transmission.

(step 202) USB Mass-storage protocol processes thread carries out abnormality detection, if not unusual, changes step 204 over to; If have unusually, continue next step.

(step 203) USB Mass-storage protocol processes thread sends abnormal signal to the abnormality processing module, abnormality processing resume module abnormal conditions, and result returned.

(step 204) USB Mass-storage protocol processes thread reads the USB request CBW (Command Block Wrapper, i.e. command block bag) that main equipment sends.The transport layer protocol of mobile phone comprises: Control-Bulk (CB), Control-Bulk-Interrupt (CBI), and Bulk-Only (alsoknown as Bulk-Bulk-Bulk or BBB) transports, what the utility model embodiment used is the Bulk-Only agreement.Under this transmission means, there are three types data between USB and equipment, to transmit CBW, CSW and general data.CBW is the order that sends to mobile phone from the USB main equipment, and command format is deferred to the specified command block of bInterfaceSubClass in the interface, is SCSI transmission command collection here.

(step 205) USB Mass-storage protocol processes thread parses the SCSI-2 order from the CBW command block, carry out processing execution and order accordingly.

(step 206) USB Mass-storage protocol processes thread sends to the I/O request in the SCSI-2 order of resolving block device driver and handles.

(step 207) mobile phone is set up a Diskonchip read-write thread.

(step 208) block device driver module carries out buffer memory according to request type, or the method for synchronization sends to the Doc kernel thread of the Diskonchip read-write thread that is in the state of intercepting.

(step 209) Doc kernel thread dissection process I/O request.

The intact I/O request of (step 210) Doc kernel thread dissection process is returned required data and is given USBMass-storage protocol processes thread.

(step 211) USB Mass-storage protocol processes thread sends the CSW (Command Status Wrapper) of reflection the current command executing state to main equipment.

The order that main equipment requires mobile phone to carry out may be for sending data, then this moment particular data is sent out, send CSW after finishing, so that main equipment carries out next step operation, main equipment determines whether continuing to send next CBW or general data bag according to CSW.

Claims

1, a kind of mobile phone with USB memory function, comprise random asccess memory, it is characterized in that, described USB connector, USB controller, the disk chip of also comprising, described USB connector is positioned at the mobile phone side, links to each other with the USB controller by holding wire, and the USB controller links to each other with described random asccess memory, transmitting-receiving is stored in the data in the random asccess memory, and described random asccess memory links to each other with described disk chip.

2, mobile phone as claimed in claim 1 is characterized in that, described USB connector is positioned at the bottom of mobile phone.

3, mobile phone as claimed in claim 1 is characterized in that, described USB connector has four lines: power line, ground wire, D+ and D-differential signal are right.

4, mobile phone as claimed in claim 3 is characterized in that, described USB connector pair links to each other with described USB controller by described differential signal.

5, mobile phone as claimed in claim 1 is characterized in that, described random asccess memory links to each other with described disk chip with data/address bus by address bus.

6, mobile phone as claimed in claim 1 is characterized in that, described random asccess memory and described USB controller are integrated in the mobile phone primary processor.

7, mobile phone as claimed in claim 6 is characterized in that, described primary processor links to each other with described disk chip with data/address bus by address bus.