KR200289238Y1 - A portable read-write memory with usb interface - Google Patents

Abstract

The present invention relates to a portable read-write memory having a USB interface, wherein the portable read-write memory includes an outer housing and a control circuit in the housing. The control circuit includes a USB interface, a flash memory, a CPU, and a register, the CPU completes address selection and conversion of the module, and its ports are connected to the USB, the flash memory, and the register. In addition, the CPU port is also connected to the radiation frequency identification module and the IR module with a sense antenna.

Description

PORTABLE READ-WRITE MEMORY WITH USB INTERFACE

The present invention relates to a portable read-write memory having a USB interface, and more particularly, to a read-write memory having a large storage capacity and a high memory reliability, the memory providing immediate use at the time of plug-in.

In all recent available mobile storage devices, the purpose of movement has not been substantially achieved. For example, an externally mounted hard disk, an externally mounted engraving and recording device, ZIP, MO, etc. are large in memory and inconvenient to carry. These devices provide large storage capacities but are not suitable for movement. When these devices are used as a portable memory, for example a soft disk, they occupy a large space in the drive device which is specifically utilized, and the energy consumption is large and the noise becomes large. Since the operating speed of the soft disk drive is slow, the storage space is small, and the data storage device is not reliable. Unlike the unstable characteristics of magnetic media as storage media, soft disks are portable products, and physical shocks are easily found. Therefore, the existing memory is not practically applied, and an object of the present invention is to provide a portable read-write memory having a USB interface that can overcome the above drawbacks.

It is an object of the present invention to provide a portable read-write memory having a USB interface, which has a large memory capacity, high memory reliability, a volume that is convenient to carry, and which can be used immediately upon plug-in, wherein the memory is a radio frequency identification device or a wireless device. It is configured integrally with the receiving element, forms a communication interface mounted outside of the PC, and may be a personal identification device.

It is yet another object of the present invention to provide a portable read-write memory having a USB, which can pass through physical switching to protect confidential data and to perform management of read-write of the data.

Other advantages and objects of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

1 is a perspective view of a portable read-write memory according to the present invention,

2 is a schematic diagram of a basic circuit diagram of a portable read-write memory according to the present invention;

3 is a circuit diagram of a wireless receiver of a portable read-write memory according to the present invention;

4 is a circuit diagram of a wireless receiver according to the present invention.

1, 2 and 3, a portable read-write memory having a USB interface is shown, which comprises an externally mounted housing 1 and a control circuit in the housing 1. The control circuit includes a USB interface (A), a CPU (B), a flash memory (C), a register (D), and a buffer (E), the CPU (B) completes address selection and module conversion, and the CPU ( The port of B) is connected to USB (A), flash memory (C) and register (D).

The outer surface of the housing 1 is provided with a window 2 having a read-write control switch 3, one end of the control switch 3 being connected to the read-write control junction of the CPU (B) port. The other end of the control switch is connected to ground.

The read-write control switch 3 is a sliding switch sliding along the window 2 as a guide slot, or a switch or a pressure switch that can be triggered to the left or the right. In addition, the CPU B is connected to a memory arranged by an electronic lock code number or a guide program, and is also connected to the radio receiving apparatus F. FIG.

As a device for mobile storage, the flash memory of the present invention is used as a storage medium, and the capacity of the storage device is determined by the size of the flash memory.

The user can move or exchange large amounts of data and the flash memory can be connected in series to increase the capacity of the flash memory.

The USB interface A communicates with the PC and can be plugged in directly for use, thus indicating the benefits of the usage memory.

The device of the present invention is a data storage device, and data transfer is performed through two leads of DP, DN, and a USB junction of a main board, and data of a hard disk and data in a flash memory are transferred to each other to facilitate data portability.

The USB input voltage is DC 5V and the operating voltage is 3.3V. Therefore, the circuit uses a circuit that converts 5V AC into 3.3V.

U1 is a USB IC and is connected to the USB junction via DATA + and DATA-leads. It has 15 address lines, two sets of data lines, 32 I / O junctions, an RD, and a WR read to handle data read and write operations.

U3 is flash memory, and data transferred between hard disks is stored there. The data is retained even when the power is cut off.

U4 is a buffer having fifteen address lines A0-A15 and one set of data lines 101/108, and is used for temporary storage of data.

U6 is a code numbered memory, and the memory is connected to the main IC through the main SDA, SCL leads, and U6 is used to access and read device technology to recognize the type of device.

After the device is inserted into the main board's USB junction, data is transferred to the main chip U1, IC for processing via the Internet DN, DP. Data is read from serial EEPROM U6 and at the same time the command is reset. After the device is reset, the device is in a normal operating state.

The read-write switch SW1 is connected to the WP A2 of the CPU, and the control end is connected to a high frequency to allow for "read-write", or to ground through a resistor R3, so that only read is possible. do.

When the system is reset, data transfer is initiated, and the host computer provides a command to initiate disk selection and initiate an RD or WR control signal. Data from the hard disk is transferred through an address line for selecting its address and a data line for transferring data and stored in a U4 SRAM or a U3 flash memory. CMOS SRAM is used to provide the buffering function so that if power is cut, the data will be lost but the data in the flash memory will not be lost. The final data will therefore be placed in a storage U3 flash memory MEMORY that allows portability if desired.

Based on the nature of the extended insertion time of the device of the present invention in a USB junction, the memory of the present invention can be integrated with a computer defense lock function. If the user does not insert the device of the present invention, the PC may not be operated or part of the program or software may not be executed. The device of the present invention can prevent other users from entering the computer system without permission, the computer usage can be recorded, and all actions after the user logs in will be recorded.

The USB electronic disk is provided with an antenna (receiver) of the wireless device. Mounting the antenna on the USB electronic disk increases the practicality of the USB electronic disk and reduces the problems caused by insufficient USB bonding.

Referring to FIG. 4, the wireless device may be an IR device, an RF device, and an RFID device, and external data, eg, a sense signal from an antenna or an IR receiving element, is passed through a TAG DATA radio path to a receiving unit. When data enters the connection unit, the data will be sent to the delivery unit, and the data is sent to the CPU via the TXPW read of the delivery unit. The CPU receives the data through the SDA and SCL leads and transfers the data to the PC via the USB junction.

In wireless devices, RF wireless transmitting devices and IR wireless transmitting devices are important devices. Based on the wireless device used with the device of the present invention, the transmission mode and transmission frequency can be determined. Among RF wireless devices, any product having a receiver, for example an RFID receiver, collected on a USB electronic disk can be used.

If the device of the present invention is integrated with the radiating end function of RFID, the device of the present invention may be used in place of all utilization TAGs based on other door alarm systems. When combined with other door alarm systems, the device of the present invention may be provided with a TAG provided by the manufacturer of the door alarm system product that is integrated with the device, the PC may be integrated with the RFID receiver end, and the identity of the PC stage may be identified. Is used. Therefore, for the mobile office or the mobile storage device, the present invention has an important meaning. Not only can the removable storage device be utilized on a PC, but in everyday life, the present invention can be used as an electronic identification authentication center such as a door security system, an automatic alarm system, and the like.

Although the present invention has been described in terms of preferred embodiments, it will be apparent to those skilled in the art that modifications and variations can be made without departing from the scope and spirit of the invention.

Therefore, the present invention is not limited to the specific embodiments described and the appended claims.

In view of the above, the advantages and effects of the present invention are as follows.

1. The device of the present invention is small, thin and light like a pen, provides a large storage space, the stored data is safe, and physically not easily destroyed.

2. The device of the present invention can be conveniently used without opening the housing of the computer. Only a USB device interface is required without separate drivers and disks, so there is no support system problem.

3. The device of the present invention has great mobility and can be operated without an operating system to achieve the purpose.

4. The storage data of the device of the present invention is highly reliable because the flash memory will not be physically damaged easily. The user can conveniently move the data.

5. The device of the present invention provides confidential data protection on an electronic disk. Since the user needs to log in the correct code number, the electronic device will not be misused without permission.

6. The device of the present invention allows a PC electronic lock.

7. The device of the present invention is integrated with the radiating end part (TAG) of RFID and provides security to the computer through the product (keyboard) of the RFID receiving end.

8. The company TAG is integrated into the device of the present invention to replace the existing identification card.

Claims (7)

A portable read-write memory having a USB interface, having an outer housing and a control circuit inside the outer housing. The control circuit includes a USB interface, a flash memory, a CPU and a register, the CPU completes address selection and module conversion, and a port of the CPU connects the USB, flash memory and a register. -Recording memory. The method of claim 1, The control circuit further comprises a read-write control switch, wherein one end of the read-write control switch is connected to a CPU port and the other end of the control switch is connected to a high electrical frequency or ground Portable read-write memory. The method of claim 2, And the read-write control switch portion is located outside of the housing. The method of claim 2, And said read-write control switch is a sliding switch which can slide along a window serving as a guide slot, or a pressure switch or a switch which can be moved left or right. The method of claim 1, And said CPU is coupled to a storage device having an electronic locking code number or a guide program. The method of claim 1, And the CPU port is connected to a wireless receiving device. The method of claim 6, And said wireless receiving device is an IR module or a radiation frequency identification module having a sensing antenna.