TWI275000B - Dynamic switching method and system of media transfer protocol and mass storage class for portable multimedia device - Google Patents

Abstract

Dynamic switching method and system of media transfer protocol (MTP) and mass storage class (MSC) for a portable multimedia device, which make the portable multimedia device commonly use the same USB hardware resources that consist of USB ports, terminals, data FIFO, program memory, data memory and file system. Supporting MTP and MSC specifications can reduce the cost. The steps are: (1) detecting whether the portable multimedia device is in MTP mode or not. (2) Confirming the portable multimedia device is in MTP mode or MSC mode. (3) Using the ATAPI layer to process the MSC device interface file format and then using physical storage layer to access the storage space of the portable multimedia device through the file format. (4) For MTP mode, using the MTP layer to convert the MTP interface file format to FAT file format and then accessing the storage space of the portable multimedia device through a file format layer.

Description

1275000 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a Multimedia Transfer Protocol (MTP) and a mass storage classification (Mass Storage) of a portable multimedia device.

The dynamic switching method of the Class-MSC mode, in particular, refers to a method for simultaneously processing MTP and MSC interface protocols. [Prior Art] Portable electronic products with a USB-universal serial bus interface are increasingly popular due to their advantages of easy portability and storage space, such as flash drives, digital cameras, and MP3 players. and many more. A portable media player with a universal serial bus (USB) interface uses a USB Mass Storage Class (MSC) protocol to communicate digitally with a computer. Among them, the USB Mass Storage Class (MSC) protocol is a standard device interface protocol defined by the Universal Serial Bus Implementers Forum (USB-IF). It includes three sub-classes—BulloOnly, CM (Control/ Bulk/Interrupt) and CB. In addition, in order to protect digital content, Microsoft has set up a digital copyright protection mechanism called Janus drm (Janus digital right management), also known as DRM-10. And if you want to

In Microsoft Media Player 10, to download digital content with the Janus DRM protection mechanism to the portable multimedia player, the portable media player needs to support the 1275000 MTP (Media Transfer Protocol) developed by Microsoft Corporation. )specification. MTP is a media transmission protocol developed by Microsoft Corporation to deliver digital content with Janus DRM protection mechanism. The MTP interface is based on Msc-based transport protocols (such as Bulk-Only transport protocol) to formulate its own command sets. , the entire content that needs to be passed is treated as an object. The portable media player is not only a multimedia player in the application, but also can be used as a flash drive (rem〇vaWe disk). Users can download any file from a personal computer and transfer it to another computer. In order to support Microsoft's janus DRM specification, the portable multimedia player must support the MTP specification. Moreover, only Mi_〇ft Wind〇ws XP currently supports MTP specifications. Others such as Wind〇ws 2〇〇〇/ME/98SE do not support MTP specifications, so when users want to use different operating systems (〇 Perati〇n

The system transfers files, and the portable multimedia player must support both MTP and MSC specifications. In order to support both Μτρ and Msc specifications, the conventional portable multimedia player needs to include two sets of USB ports, one of which is Msc, and the other is an MTP device, and each group The cerebral palsy needs to have its own hardware circuit, such as USB endpoints and FIFOs. The disadvantage is that the cost of the portable multi-ship reduced hardware line is greatly increased. SUMMARY OF THE INVENTION The main object of the present invention is to provide a portable multimedia device with a storage space of 6 1275000; if it is an MTP mode, the MTP interface is broadcasted through the Asahi layer (4). The FAT file format is converted into a FAT file system layer, and then the storage space of the portable multimedia device is accessed through a physical storage driver layer. A dynamic switching system of a multimedia transfer protocol (MTp) and a mass storage classification (MSC) mode of a portable multimedia device, including a USB device layer, for providing a connection And a device for processing a USB host (USB Host) on the personal computer; a Μτρ layer is connected to the universal serial bus device layer, and converts the file format of the Μτρ interface into a FAT broadcast format; a FAT The FAT service system layer is connected to the Μτρ layer to process the FAT file format; and a physical storage driver layer (physical storage driver lay), accessing the portable multi-ship through the file format One of the storage spaces of the device. In order to enable further understanding of the features and technical contents of the present invention, please refer to the following detailed description of the present invention, but the series is provided for illustrative purposes only, and is not intended to be used for this purpose. The invention is limited to the object of the invention by using the slot of the FAT to transmit the object object of the Μτρ mode. The current operating system can support the fat of the object. The format of the file, therefore, the multi-pronged device can be transmitted through the multimedia transfer protocol (MTP) of the styling multimedia device of the present invention and the dynamic switching method of the large-scale classification _:) mode 1275000, when the difficulty is stored in the MTP format The operating system to access, even when the financial township touch device to the msc mode, it is not affected. Please refer to the diagram of "Multi-Media" and "Msc" Modular Dynamic Switching System 1 of the Portable Multimedia Device of the present invention, including a universal serial convergence. Row device layer (uSB fine layer (7) layer) 10, - MTP layer (MTP layer) 12, - FAT file system layer (iAT), physical storage driver layer (physicai gambling layer) 16 and a storage space 18 USBL uses a USB device layer 10 to provide a device for connecting and processing a USB host (10) B H〇st) of the personal computer 2, including a USB port (not shown) In the picture). The Μτρ layer 12 is connected to the general-purpose serial bus device layer 1 (the file format of the ^|MTp interface is converted into a FAT file format. Then, it is processed along the file format layer 14 through the ^^, and then through the physical storage driver layer. 16 accessing the storage device of the portable multimedia device 18. The storage space μ is a hard disk (har (j father) or non-volatile flash memory (NAND flash), and the FAT file The format layer 14 is connected to the MTP layer 12, the physical storage drive layer 16 is connected to the sFAT file format layer 14, and the storage space 18 is connected to the physical storage drive layer 16. In this way, both MTP and MSC specifications can be supported, which simplifies the system. And reducing the cost. The multimedia transfer association S (MTp) and the mass storage classification (MSC) mode dynamic switching method of the portable multimedia device of the present invention, as shown in the second figure, the steps include: 9 1275000 First, the Detect Detecting whether the portable multimedia device is in the MTP (Media Transfer Protocol) mode S100, to confirm that the portable multimedia device is in the MTP (Media Transfer Protocol) mode or the MSC (Mass St〇rage class) mode; The ATAPI layer is used to process the file format sl2 of the MSC device interface, and then the storage space S108 of the portable multimedia device is accessed through the file format by using the physical storage driver layer (Physical Storage Driver Layer); If it is in the MTP mode, the file format of the MTP interface is first converted into the FAT file format S104 through an MTP layer (the FTP file system layer is processed by the FAT file system layer), and then the physical storage is performed. The drive layer (physical st〇rage accesses the storage space of the portable multimedia device s8). The multimedia transfer protocol (MTP) and the mass storage classification (MSC) mode of the portable multimedia device of the present invention The dynamic switching method enables the portable multimedia device to share the same USB hardware resources, including the same USB port, Endpoint, data first-in first-out area (FIF), and program memory. (Program memoty), data memory (Data mem〇iy) and file system (file system), etc., support both Μτρ and MSC rules, and reduce costs, and increase the convenience of use. Because the portable multimedia device of the present invention uses only a set of USB endpoints and a data first-in first-out area (FIF〇), in order to switch between the MTP and MSC modes, The invention further provides several square 1275000 methods for switching modes of operation. (ΜΤΡ^为为(4) The considerable multi-ship money miscellaneous transfer agreement 1. The flow chart of the miscellaneous switching mode of the storage classification (Msc) mode can be preset to the MTP mode S200, but: The portable multimedia device is connected to the computer and then the user can use the one and the f to open the embarrassing state to carry the W device. The tilting type can also be used. The test can be carried in the standby mode 2 T money in the standby 峨 ldle st township, if it is not in the standby financial error, and the local media device enters the standby makeup can be j "style eve can be lazy, then the mode Switching. If in the standby state, the heart of the media will set her to the MSC mode fiber to separate hundreds of peaks of coffee, and finally the sneak peeks can be used to carry the portable multimedia county of the invention can not be inserted,

η = Knife, MTP and MSC modes. The above preset mode can also be MSC chess mode, and then switch to MTP mode. The fourth figure is a multi-volume storage classification of the portable multimedia device of the present invention. The user can use the _hard-switch or the soft-wire function button to select the portable mode of the portable multimedia device. The humiliation 1 media device is connected to the coffee, the whistling (4) object ^ 1275000 is inserted as the reduced hardware switch or - the soft body definition is the sand key is changed to the Msc mode S304, and if so, the MSC mode is § 3 〇 6; , then enter Kenting 1) - 杈 S308. When the user wants to switch modes, the portable multimedia device needs to be plugged into the computer. The dynamic switching method and system of the media tree pattern (Μτρ) and the mass storage classification (MSC) mode of the local media device of the present invention have the following characteristics: 丨· The portable multi-body device of the invention can simultaneously Supporting MTP and MSC, two Weiger's increase the money on the shackles, and at the same time make the secret

Winder χρ, 2_, hall and view are not limited by the format supported by the operating system and can be widely used. Z The portable multimedia device of the present invention can share the same USB port, including the same USB: t port (USB port), endpoint (Endpoint), data advanced first ^ mt ^ mData &gt; memoty) and file system (file System), etc., there is no need to set two sets of hardware lines due to both the support body and the MSC specifications, which can save costs. * ^3• This U-portable multi-hybrid device can be used to cut the hardware or the soft body. This function changes the operation mode of the portable multi-hybrid device. The dynamic switching method of the multimedia transfer protocol (Μτρ) and the Dali storage classification (MSC) mode of the portable media device of the stomach can be used to change the operation mode of the portable multimedia device by plugging and unplugging. 12 1275000. The multimedia transfer protocol (Μτρ) and the mass storage MSC of the portable multimedia device are processed in the format of the FAT job accessed by the Μτρ mode, so when switching to In the hall mode, the files/objects accessed by the MTP mode can still be accessed. </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

BRIEF DESCRIPTION OF THE DRAWINGS A brief description of the drawings of the present invention is as follows: - a schematic diagram of a multi-transition agreement (MTP) of a multi-ship device capable of multi-ship device of the present invention and a dynamic switching system for storing a plurality of classified ceramic patterns; The figure is a flow chart of a multi-transfer protocol of the portable multi-ship device of the present invention and a method for switching a large number of storage points _〇 mode; the third _ switch of the portable ship device of the present invention One of the flow chart of the method; and the fourth picture is one of the flow chart of the (4) body transfer agreement (MTP) and the big error deposit _Mscm of the portable shirt ship device. Description] "Invention" 1 bis: set (_ and big _ 13 1275000 2 PC 10 universal device layer device layer (USB device layer) 12 MTP layer (MTPlayer) 14 FAT rights file format layer (FAT file System layer) 16 physical storage driver layer 18 storage space 20 USB host

14

Claims (1)

1275000 X. Patent Application Range: 1. A multimedia transfer protocol (MTP) of a portable multimedia device and a dynamic switching method of a mass storage classification (MSC) mode, the steps of which include: detecting whether the portable multimedia device is The MTP (Media Transfer Protocol) mode is used to confirm that the portable multimedia device is in the MTp mode or the MSC (Mass Storage Class) mode. If the MSC mode is used, the ATAPI layer is used to process the broadcast of the MSC device interface. Format; if 疋MTP mode', first convert the file format of ip; 1 side to FAT file format through a p layer (MTp iayer), and process the file format with a FAT file SyStem layer And accessing the ageing space of the portable sling device through the spoof format by using the physical storage driver layer. 2. The multimedia switching protocol (MTP) and the dynamic switching method of the mass age classification (MSC) mode of the portable multimedia device according to the first application of the patent scope, and the step of switching the operation mode, including The portable multimedia device is preset to the MTP mode; the portable multimedia device is connected to the computer; the portable multimedia user changes the operation mode of the portable multimedia device; whether it is in the standby state; if not In the standby state, the device will automatically _ the portable multimedia device user waits for more _ device to enter the waiting will issue a warning message, and informs the ^ standby state 're-entry mode switch; 1275000 portable multimedia device will switch to If in standby mode, the MSC mode; and the portable multimedia device will be connected to the computer; the red is separated by hundreds of milliseconds ' and the portable multimedia of the present invention is re-plugged by the above method' It is possible to dynamically switch between Μτρ and mosquito patterns. And the method of moving the multimedia transfer protocol (μτρ) and the mass storage classification (MSC) mode of the portable multimedia device in the second paragraph of the patent scope of the patent application, wherein the user changes the H heart. The way the knife is changed to define the function key is achieved. The tethering style of a physical clothing is based on - 4. The transfer agreement (可) of the portable multimedia display of the second paragraph of the patent application scope and a large amount of storage in the eight phase ^ A &gt; The dynamic switching of the MSC mode, in which the user changes the operating mode of the portable multimedia device is achieved by means of a hardware switch. 5. If you apply for a patent scope! The multi-transfer protocol (MTP) of the portable multimedia device and the dynamic switching method of the mass storage classification (whip) mode further include a step of switching the operation mode, which includes: the user selects the portable multimedia device Operation mode; connecting the portable multimedia device to the computer; determining whether the selection of the home ship device operation mode switch to the MSC mode; if yes, entering the MSC mode; and if not entering the MTP mode; 16 1275000 A FAT file SyStem layer is connected to the MTP layer to process the FAT file format; and ^ a physical storage driver layer (10) (4) (5) st〇rage - from the (four) sentence, connected to the FAT slot file format layer The slot format accesses a storage space of the portable multimedia device. ^ 11 The kinetic energy switching system of the portable multimedia device (Multimedia Transfer Protocol (Gu)&gt;) and the Big (4) Storage (MSC) mode of the patent scope range H), wherein the universal serial (4) county layer is further Including a coffee B port) ° 巧 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳 纳For hard disk (hard·). 13. For the multi-media of portable multimedia devices in the scope of patent (4), turn (4) fixed (test) and mass storage classification (msc) mode dynamic cut, 糸, /, 中_存&quot; is non-volatile Sex (4) memorabilia ^ flash) 〇丄 4 · 曱 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 : : : : : : : ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ . 15. The dynamic transfer protocol (avoidance) and the transition mode (recommended) mode of the portable multimedia device of the portable device of the U.S. Patent Application No. 5, wherein the operation mode selection key is a hardware switch. 16· For example, the patent application scope 18 1275000 body transfer agreement (MTP) and the mass material classification (MSC) mode dynamic switching system 'the towel is used as the key to define the Wei key. 17. The multimedia transfer protocol (MTP) of the portable multimedia device of claim 14 and the dynamic switching system of the mass storage classification (MSC) mode are utilized by the operation mode instead of the plug-in. Win and MSC mode switching. The kinetic energy of the media transfer age () and the mass storage classification (msc) mode of the portable multimedia device of the bell team as claimed in item 14 of the patent scope is ^^ ΜΤΡ ^ MSC 19