KR200255497Y1 - Ieee1394 storage case - Google Patents

Abstract

The present invention is a device that makes the HDD, CD-RW, CD-ROM, DVD, etc. to be connected to the computer to enable external mounting by applying the IEEE1394 interface.

According to the present invention, the biggest advantage of the IEEE1394 interface is high speed, and depending on the mode, three speeds of 100MBps, 200MBps, and 400MBps can be achieved. It is an external device that can transmit, does not need to reboot the computer when the product is attached or detached, and has its own power supply.

Description

IEEE1394 external case {IEEE1394 STORAGE CASE}

The main interface of auxiliary storage currently in use is that IDE is slow and scalable. The SCSI (SCSI) method has excellent scalability, but it is relatively expensive, and the protocols and drivers are slightly different for each company so that it can be considered that there is no standard.In theory, it can be easily extended, but in practice, the characteristics of each peripheral are used. There are a lot of difficulties. To address these shortcomings and to develop peripherals (especially high-speed peripherals) in one cable, a new standard specification was developed, resulting in IEEE1394.

IEEE1394 is a new serial bus interface standard jointly proposed by Apple and Texas Instruments that has been released under the code name FireWire. IEEE1394, which has been studied since 1986, was formally agreed to in December 1995 by the American Institute of Electrical and Electronics Engineers (IEEE) and standardized on it.

As described above, it is expensive to purchase and use an external HDD, CD-RW, CD-ROM, DVD, etc., which are released for high-speed data processing using the IEEE1394 interface.

The purpose of the present invention is to input / output at a fast transmission speed of 400 mega BPS, so it can be used by attaching peripheral devices such as 3.5 'hard disk or 5.25' CD-RW, CD-ROM, DVD, etc. Regardless of its ease of installation and internal power supply, no power supply is required. In addition, the power lamp is displayed on the outside, so you can see the operation at a glance and the input voltage is FREE VOLTA GE.

Best of all, it can be connected to any of the peripherals listed above, making it more cost-effective than purchasing it exclusively.

Fig. 1 shows an external view of an IEEE1394 exterior case.

Figure 2 shows the internal layout of the IEEE1394 outer case

Figure 3 shows a cross-sectional view and the size of the cable connecting the computer and the external case.

4 is an exemplary diagram in which an IEEE1394 external case is connected to a computer.

<Description of Major Symbols in Drawing>

1. Main power switch

2. Power Lamp

3. cooling fan

4. Main power connector

5. DC power supply

6. Main P.C.B

7. Audio output terminal

According to the present invention, it is an external device that can use data with a large capacity such as data transmission and reception and image data in connection with a computer.

As shown in FIG. 1, the front view, the rear view, and the real diagram are respectively expressed in three. A detailed description of each part follows.

The main power switch 1 of Fig. 1-1 has a function of turning on / off the main power of the present invention, and thus improves the simplicity of the product.

Power Lamp 2 of Figure 1-1 has the advantage of visually seeing the ON / OFF of the product by displaying the presence or absence of the operation of the product using a lamp. Cooling fan 3 of Fig. 1-2 is equipped with external devices (hard disk, CD-RW, CD-ROM, DVD) in order to prevent the malfunction of the devices due to the heat generated during operation and to prevent the DOWN It serves to suppress temperature rise.

In addition, since the cooling fan itself is manufactured in an emission type, it is not only excellent in efficiency but also prevents inhalation of fine foreign substances such as dust in the interior for a long time.

The main power supply connector 4 of Fig. 1-2 is a connector for directly supplying power to the device. The input voltage is FREE VOLTAGE, regardless of the input voltage of 110V / 220V, to prevent a fatal damage of the device due to an input voltage mistake.

2 is a device for supplying power to external devices mounted with the main unit, and outputs a high current of 2 A or more, thereby eliminating the voltage down caused by a large current consumption. Can supply power. PCB 6 of FIG. 2 is divided into a connector which transmits and receives IEEE1394 DATA from the outside as a practical MAIN of the device and a connector that divides the transmitted / received signals according to the respective buses and inputs and outputs so that external devices can operate. Can be.

A brief description of the circuit on P.C.B follows.

This circuit can be divided into two parts, transmit / receive control part and MCU, where transmit / receive control part oscillates with 24.576MHz lip crystal and selects data transmission / reception rate and selects data transmission / reception rate to output 49.152MHz Control the Link-Layer with a clock.

Each signal obtained from the transmitting and receiving part is input to the MCU.

Signals input to MCU generate output signal to ATA connector part by internal interface and control part, and external devices are driven by these signals. As it uses STEP-Down Voltage Regulator, it supplies stable power to the circuit and returns after a certain time after the power is automatically cut off when overloaded by the poly switch.

The audio output terminal 7 of Fig. 1-2 connects the voice signal with the sound card so that it can be heard as a sound.

In general, as shown in FIG. 3, six pin cables are connected to each device through a 1394 port.

Inside the six-pin cable, two shielded, twisted pairs are used to transfer data while the other wires provide ground and power. It is sent in the form of a packet with data and address information to be transmitted. The IEEE 1394 protocol has a fast data transfer key due to noise reduction through internal lines. The signal is transmitted at high speed without error on each line. To achieve this high speed, cables are allowed up to 4.5m.

Figure 4 is a connection between the desktop PC and the desktop PC and another external device after the cable of Figure 3 is connected.

In addition, this device has two ports as shown in Fig. 1-2, so that 63 devices can be serially connected.

As described above, according to the present invention, since the input and output at the high data transfer speed of 400M BPS by the fast data processing speed of IEEE1394, peripheral devices such as 3.5 'hard disk or 5.25' CD-RW, CD-ROM, DVD, etc. It can be installed and used, and it is easy to remove and install regardless of the power of the computer by HOT plug and can supply its own power inside. In addition, the power lamp is displayed on the outside, so you can check the operation at a glance and the input voltage is FREE VOLTAGE.

Best of all, it can be connected to any of the peripherals listed above, making it more cost-effective than purchasing it exclusively.

In addition, since there are two external ports, other peripherals can support the IEEE1394 interface, and their own power supply is built-in, so there is no need to support power supply separately.

Claims (1)

IEEE1394 external case that can be used to install peripheral devices such as hard disk, CD-RW, CD-ROM, DVD, etc. by applying fast transfer speed of IEEE1394 interface