KR100761348B1 - Usb apparutus and processing method of data thereof - Google Patents

Abstract

A USB device and a data processing method thereof are provided to selectively process data in a memory controller based on preset priority if a plurality of different data is transceived at the same time by using software. A memory controller(20) includes a path provider(22) analyzing/determining the different data inputted/output through a connector, and providing an input/output path of the data depending on a determination result, and the first storage(24) for operating firmware. The path provider is connected to an audio processing unit(23) for processing audio data if the inputted/output data is the audio data. A memory(30) restricts user access and includes the first logical area storing a firmware operation logic. The first storage stores a routine for calling the firmware operation logic. A function part(40) is equipped with the plurality of function units(41,42,40n) for performing each function by connecting to the path provider.

Description

Usb device and data processing method of the device {USB APPARUTUS AND PROCESSING METHOD OF DATA THEREOF}

1 is a block diagram of a USB drive according to an embodiment of the present invention.

2 is a detailed view of a USB drive according to an embodiment of the present invention.

3 is a diagram for describing a detailed structure of the memory illustrated in FIGS. 1 and 2.

4 is a flowchart illustrating a data processing process of a USB drive according to an embodiment of the present invention.

5 is a view for explaining a USB drive that can use the conventional VOIP service

The present invention relates to a UBS device and a data processing method of the device, and more particularly, a UBS device and a data of the device for smoothly processing each data in a complex UBS device provided to transmit and receive a plurality of different data. It is about a processing method.

Recently, the Internet, public telephone network, power line communication network, and cable communication network are being integrated based on Transport Control Protocol / Internet Protocol (TCP / IP). Kind is increasing exponentially, too. In addition, when the communication is controlled by a computer, the existing communication methods such as RS-232 and RS-485 may cause a collision with computer peripheral devices. Therefore, a new communication method using USB has recently been in the spotlight. . The USB is a collaboration of seven companies, IBM, Intel, Microsoft, Compaq, DEC, Northern Telecom, and NEC, which are leaders in telecommunications, to solve the inconvenience of slow transmission speed and limited device connection of serial or parallel external expansion ports. It is a serial port interface developed after the research. The principle is the same as the existing serial port, but the data transmission speed is much faster than that of the existing serial port, and it can be connected to each other by daisy chain like SCSI (Small Computer System Interface). In theory, up to 127 peripherals can be connected simultaneously.

In addition, the plug-and-play feature allows hot swapping, eliminating the need for reboots, two of the four wires on the USB cable are used for data transfer, and the other two As 5V power is output, when applied to low power peripherals, no power is required.

Therefore, USB having the above advantages is widely used in computer peripheral devices such as printers, mice, keyboards, scanners, MP3 players, digital cameras, digital camcorders, and the like.

Such USB has been released in a large number of USB products that can use the Internet telephony services to take advantage of the rapidly developing VOIP technology.

VOIP converts voice data into digital data above a certain BPS, compresses it, wraps it in IP data with RTP headers, and accepts it as an existing data network.

An example of a USB drive capable of using the VOIP service is illustrated in FIG. 5.

A connector 1 for connecting to a host, a memory controller 2 electrically connected to the connector 1 to control communication with the host, and a memory 3 and an audio processor connected to the memory controller 2. A switching hub 4 for classifying and transferring the data of 5), an audio processing unit 5 for processing audio data to use VOIP service, and a memory 3 as a storage space.

The data transmitted / received through the connector 1 is divided into audio data of the audio processor 5 and non-audio data of the memory 3, and the memory controller 2 merely transmits data transmitted or received, The data is separated from the switching hub 4 and transferred to the corresponding memory 3 or the audio processor 5.

As described above, a separate switching hub 4 is further installed to separately transmit audio data and non-audio data so that the user can store or read file data in the memory 3 while using a voice call service using a VOIP network. I can use it.

However, a USB drive that can use the conventional VOIP service as described above requires a separate switching hub for distinguishing voice data from non-voice data, which complicates the manufacturing process and increases the manufacturing cost due to the installation of separate physical hardware. There is a drawback to rising. In addition, although a plurality of devices and a tree-type wiring can be constructed physically under the protocol of packet transmission of a USB drive, the switching hub selects voice data and non-voice data sequentially because there is only one logical path. Perform packet transmission. Therefore, there is a disadvantage in that excessive heat is generated in the switching hub when attempting to copy a large video file into the memory during a voice call using a VOIP network.

As a result of the heat generation, the consumer may not have the reliability of the product, and in particular, there is a problem that is an important cause of failure of the entire USB drive due to excessive heat generated from the hardware.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a USB device that selectively processes a plurality of types of data at the same time in a memory control means by software.

In particular, it is an object of the present invention to provide a USB device that processes each data in accordance with a preset processing priority when a plurality of types of data are required to be processed simultaneously.

In addition, another object of the present invention is to provide a data processing method of the above USB device.

The USB apparatus of the present invention for achieving the above object comprises a connecting portion for connecting to an external device, a memory as a data storage means, and a memory control means for controlling the read / write of the memory. The memory control unit may include a path providing unit for analyzing and determining a plurality of different data output and / or input through the connection unit, and providing an output and / or input path of the corresponding data according to a determination result and firmware driving. It further comprises a first storage for.

Further, in the USB apparatus of the present invention, an audio processing unit for processing the output and / or input data when the output and / or input data is audio data is connected to the path providing unit of the memory control means.

In addition, the USB storage device of the present invention is characterized in that the firmware is stored in the first storage of the memory control means.

In addition, in the USB apparatus of the present invention, the memory includes a first logical area in which a user's access is limited and firmware driving logic is stored, and the first storage of the memory control means is stored in the first logical area of the memory. A routine for calling a firmware driving logic is stored.

In addition, the USB device of the present invention is characterized in that it further comprises a function unit having a plurality of function units connected to the path providing unit of the memory control means for performing a separate function. In particular, the function unit is characterized in that it comprises an external interface for connecting at least one external device. The external interface may be an infrared communication module or a Bluetooth communication module capable of wireless communication, and a memory card socket may be installed to use various memory cards.

As the data processing method of the USB apparatus as described above, the data processing method of the USB apparatus having a controller includes a first step of determining the type and the transmission mode of the data to be output and / or input, and the data determined in the first step. And a second step of outputting corresponding data in a predetermined path according to the type.

If the data output and / or input in the first step is at least two or more pieces of data, the method may further include outputting and / or input processing the respective data according to a predetermined priority according to the determined transmission mode. do.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

1 is a block diagram of a USB drive according to an embodiment of the present invention, FIG. 2 is a detailed view of a USB drive according to an embodiment of the present invention, and FIG. 3 is a block diagram of the memory shown in FIGS. 1 and 2. 4 is a flowchart illustrating a detailed structure, and FIG. 4 is a flowchart illustrating a data processing process of a USB drive according to an embodiment of the present invention.

As shown in FIG. 1, the USB drive according to the present embodiment includes a connector 10 for inserting and electrically connecting to a USB port of a host (not shown), and electrically connected to the connector 10. A memory controller 20 for processing data and controlling reading and writing of the memory 30, a memory 30 as a storage space, and an apparatus connected to the memory controller 20 to perform a plurality of various functions. It includes a function unit 40 provided to be connected or installed. It further includes a speaker unit 50 is connected to the memory control unit 20 for outputting audio data to the outside.

The memory controller 20 will be described in more detail with reference to FIG. 2 as follows.

The main control unit 21 (hereinafter referred to as MCU), the storage unit 24 for driving the firmware, and the path providing unit 22 for separately transmitting and transmitting a plurality of types of data received through the MCU 21. And an audio processing stage 23 for processing audio data. The function unit 40 includes a plurality of function units 41, 42... 40 n that perform different functions. The path providing unit 22 is achieved by the functional operation of the memory control unit 20, rather than being installed as separate hardware, and will be described by name for convenience of description throughout the specification. In other words, the memory controller 20 is implemented by a one chip method manufactured by a multi chip package (MCP), and a module capable of processing an audio signal is embedded therein, and the path providing end ( The function of 22 is loaded by the firmware 31a so that the function can be achieved in software. In the present exemplary embodiment, the audio processing unit 23 is described as an example in which the MCP is installed in the memory control unit 20. However, the present invention is not limited thereto. . In this case, it is possible to process the audio data and the non-audio data separately by the path providing function of the memory controller 20, that is, the function of the path providing end 22.

The function unit 40 includes a plurality of function units for performing various functions, and inserts a communication interface such as an infrared communication module and a Bluetooth module for wireless communication or a separate memory card such as an SD card or a CF card. External interfaces, such as sockets, can be installed.

As shown in FIG. 3, the memory 30 restricts access by a user and allows only an authorized user to access the memory 30, and a second logical area 32 that anyone can easily access. Has Although firmware may be recorded in the storage unit 24 of the memory control means 20, firmware logic 31a is stored in the first logical area 31 of FIG. 3, and the firmware logic 31a is called. A routine for doing this may be recorded in the storage unit 24 and operate. In addition, it will be obvious to those skilled in the art that the entire firmware may be stored in the first logical region 31.

The VOIP program for VOIP communication may be further recorded in the first logical region 31 as described above, and the VOIP program recorded in the first logical region 31 may be transmitted to the host for execution by the firmware. have.

Looking at the data processing process of the memory control means 20 as described above in detail with reference to FIG.

It is determined whether the data is output from the input or the internal through the connector 10 (S10), and if the input or output of the data is determined (S20). If it is a plurality of data, the transmission mode and type of the data recorded in the header of the data are respectively determined (S30), and it is determined whether the determined transmission modes are different (S40). If the transmission modes are different, the processing order of the data is determined according to the priorities set according to the transmission modes (S50), and the data is processed (S70) so as to be transmitted along the preset path according to the type of data. In the step S40, if a plurality of data having the same transmission mode is used, the data processing order is determined by FIFO (First In First Out), and the data is processed (S70) to be transmitted through a predetermined path.

Meanwhile, in step S20, if the data is single data instead of the plurality of data, the header value of the data is recognized to determine the transmission mode and type, and the data is processed to be transmitted in a preset path according to the data type.

The transmission mode may be classified into a transmission mode according to the USB standard, that is, an isochronous transmission mode, an interrupt transmission mode, and a bulk transmission mode. The isochronous transfer mode is a method of guaranteeing the bandwidth when transmitting data and is required for handling continuity data such as video and audio. The interrupt transfer mode is a mode used by input devices such as a keyboard and a mouse. This mode is to transfer data in real time. The bulk transfer mode is executed when there is room in the transmission frame while performing the two transfers. The bulk transfer mode is mainly used for devices such as printers, which have a large amount of data but do not require immediateness.

In accordance with the above USB standard, the priority of the isochronous transfer mode is given priority, the interrupt transfer mode, the bulk transfer mode, and the priority may be determined, or may be arbitrarily determined by the user.

For example, if you want to copy a large file to memory during a voice call using the VOIP service, the USB drive, which can use the VOIP service, gives priority to voice data processing. It can be given.

For another example, when the Bluetooth module is installed as a function unit of the function unit 40 shown in FIG. 2 and the corresponding USB device is used as a Bluetooth dongle having a storage space, the memory controller 20 Can be set to process the Bluetooth data among the transmitted and received data as the highest priority.

In the example as described above, by setting the data processing priority according to the characteristics of the corresponding USB device, it is possible to perform a reliable operation for performing the function.

In the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the USB apparatus of the present invention can perform processing of different data in software without a separate switching hub apparatus, thereby reducing manufacturing cost by eliminating physical hardware.

In addition, since the heat generation phenomenon, which is the biggest disadvantage of the conventional switching hub, does not occur at all, there is an advantage of providing a reliable product to the user. In particular, there is an effect that the post-treatment cost is greatly reduced because the product does not occur due to the heat generation phenomenon.

In addition, the data processing for the function to be performed as a top priority can be operated to increase the user's confidence, there is an advantage that the function is stable operation.

One embodiment of the present invention described above should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims (8)

A USS device comprising a connecting portion for connecting to an external device, a memory as data storage means, and memory control means for controlling reading / writing of the memory, The memory control unit analyzes and determines a plurality of different data output and / or input through the connection unit, and provides a path providing unit for outputting and / or input paths of the data according to the determination result, and driving the firmware. USS device further comprises a first storage for. The method of claim 1, And an audio processing unit for processing the output and / or input data when the output and / or input data is audio data. The method of claim 1, A USB device, characterized in that the firmware is stored in the first storage unit of the memory control means. The method of claim 1, The memory includes a first logical area in which a user's access is limited and firmware driving logic is stored. And a routine for calling the firmware driving logic stored in the first logical area of the memory in the first storage of the memory control means. The method of claim 1 And a function unit having a plurality of function units connected to the path providing unit of the memory control unit and configured to perform a separate function. The method of claim 5, The function unit comprises an external interface for connecting at least one external device. A data processing method of a memory control means of a USB device provided with a memory control means, A first step of determining the type of data to be output and / or input and the transmission mode according to the USB standard protocol; And a second step of outputting the corresponding data through a predetermined path according to the type of data determined in the first step. The method of claim 7, wherein When the data output and / or input in the first step is at least two or more data, And a feature for outputting and / or inputting the respective data according to a predetermined priority according to the determined transmission mode.

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