KR200234895Y1 - Apparatus for using usb function of data exchange - Google Patents

Abstract

The present invention relates to a device for exchanging data of a portable information terminal and data of a PC at high speed by using a USB (UNIVERSAL SERIAL BUS) function. The portable information terminal enables a high speed data exchange with a PC. The present invention relates to a data exchange device using a USB function to provide convenience to a user by shortening the transmission time. To this end, the present invention includes a terminal for connecting an external device of the portable information terminal to enable data exchange between the portable information terminal and the PC; A transceiver for exchanging USB data by the terminal for connecting the external device; An MSM for storing data received from the transceiver and processing data storage and data transmission speed; And a memory unit for transmitting and storing the data transmitted to and received from the MSM. Therefore, the present invention supports the USB function in the portable information terminal in terms of transmission speed compared to serial communication, which is a connection method with a conventional PC, and has an effect that is significantly superior to the existing transmission speed and transmission method when upgrading software. have.

Description

Data exchange device using the USB function {APPARATUS FOR USING USB FUNCTION OF DATA EXCHANGE}

The present invention relates to a data exchange device using the USB function, and in particular, it is possible to provide convenience to the user by shortening the transmission time by enabling high-speed data exchange with a PC using the USB (UNIVERSAL SERIAL BUS) function in the portable information terminal. It is about data exchange device using USB function.

In general, in the case of downloading information required from a portable information terminal from a PC or uploading information of the portable information terminal to a PC, data is additionally exchanged using a serial cable device. In this case, the user can download the latest version of the software necessary for the portable information terminal from the PC. In addition, the PC synchronization function may be used to download various information edited on the PC, such as a name book, a memo, and a schedule, to the portable information terminal, or transfer the various information edited by the user from the portable information terminal to a PC for backup. . To do this, data is exchanged using the serial ports of the CPU and PC.

In order to transmit data from a portable information terminal, data is transmitted via RXD (RECEIVE DATA) of a PC using a TXMIT (TRANSMITTDE DATA) line of a CPU. In addition, in order to transmit data from the PC, the TXD line of the PC receives the data from the MSM (MOBILE STATATION MODEM) via the RXD of the portable information terminal.

When limiting the data exchange rate between MSM and PC of portable information terminal, the maximum transmission speed that MSM can support is limited to 115KBPS. For example, when downloading 2Mbytes of PC data to a portable information terminal, the transfer time is about 2 to 3 minutes.

However, such a conventional device has been recently developed into a mobile computing concept with the characteristics of a portable information terminal, and according to a technology trend corresponding thereto, a user can easily and quickly store and exchange a lot of information for a user of a portable information terminal using a PC. There is a restriction on the current data exchange method. In addition, since the upgrade of the software of the portable information terminal occurs frequently during production and service, there is a problem that the efficiency is reduced in terms of productivity and work efficiency due to a lot of time.

Accordingly, the present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a data exchange device using a USB function to increase a transmission speed by supporting a USB function in a portable information terminal.

1 is an exemplary view showing a data exchange device using a USB function of the present invention.

*** Description of the symbols for the main parts of the drawings ***

11: Terminal for connecting external device 12: USB transceiver

13: MSM3100 14: Memory section

15: PC

The present invention for achieving the above object is a terminal for connecting an external device of the portable information terminal to enable data exchange between the portable information terminal and the PC; A transceiver for exchanging USB data by the terminal for connecting the external device; An MSM for storing data received from the transceiver and processing data storage and data transmission speed; And a memory unit for transmitting and storing the data transmitted to and received from the MSM.

Hereinafter, with reference to the accompanying drawings an embodiment according to the present invention in detail as follows.

Figure 1 is an exemplary view showing a data exchange device using a USB function according to the present invention, as shown in the connection for the external device of the portable information terminal for enabling data exchange between the portable information terminal and the PC (15) A terminal 11; A transmission / reception unit 12 for exchanging USB data by the external device connection terminal 11; An MSM (13) for storing data received from the transceiver unit (12) and processing data storage and data transmission speed; It consists of a memory unit for transmitting and storing the data transmitted and received to the MSM (13), it will be described in detail the operation and effect of the present invention configured as described above.

The basic configuration to support the USB function is composed of the hardware configuration of the MSM3100 (13) and the transceiver and the software that can support it in the portable information terminal and PC to basically perform the USB interface. When a user first transfers data from a PC to a portable information terminal in order to use USB, the data transfer speed can be selected first. That is, the user selects the data transfer rate of 1.5 Mbps or 12 Mbps by 'H' or 'L' to the speed selection terminal of the USB transceiver 12. Thereafter, high speed data is transmitted to the MSM3100 13 by the USB transmitter / receiver 12. In this case, the USB transmitter / receiver converts the transmitted data to a 3V level that can be recognized by the MSM3100 (13). As a result, the data input to the MSM3100 13 is stored in the memory unit through FIFO (FIRST IN FIRST OUT), which is an area for temporarily storing data received from the PC. In order to receive data to the MSM3100 (13), the MSM3100 (13) outputs a high as an enable signal capable of controlling the transceiver 12, thereby enabling the transceiver 12.

Therefore, the data temporarily stored in the FIFO of the MSM3100 13 is stored in the memory unit 14.

Further, when the user transfers data of the portable information terminal to the PC, first, the data of the memory unit 14 is read from the FIFO by the MSM3100 13 which controls all operations of the portable information terminal, and the MSM3100 (13). ) Enables the input of the data by applying a low signal to the transceiver 12.

Accordingly, the transceiver 12 converts the data into a 5V level so that the received data can be recognized by the PC, and transmits the data to the PC through a cable connected to the terminal 11 for connecting an external device of the portable information terminal. send.

Therefore, the portable information terminal and the PC can exchange high speed data using the USB function.

As described in detail above, the present invention supports the USB function in the portable information terminal, which is superior in terms of transmission speed compared to serial communication, which is a connection method with a conventional PC. In addition, since the usage environment of the portable information terminal is shifting from a simple portable information terminal to a portable computer in the future, considering the production site and service aspects, the portable information terminal is considerably more than the existing transmission speed and transmission method when upgrading the software. Excellent effect.

Claims (1)

A terminal for connecting an external device of the portable information terminal to enable data exchange between the PC and the portable information terminal; A transceiver for exchanging USB data by the terminal for connecting the external device; An MSM for storing data received from the transceiver and processing data storage and data transmission speed; And a memory unit for transmitting and storing data transmitted and received to and from the MSM.