CN2689343Y - Device for accessing data in computer system - Google Patents
Device for accessing data in computer system Download PDFInfo
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- CN2689343Y CN2689343Y CN 200420048119 CN200420048119U CN2689343Y CN 2689343 Y CN2689343 Y CN 2689343Y CN 200420048119 CN200420048119 CN 200420048119 CN 200420048119 U CN200420048119 U CN 200420048119U CN 2689343 Y CN2689343 Y CN 2689343Y
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- hard disk
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Abstract
The utility model discloses a device for accessing the data in the computer system and a method for accessing the data in the computer system. The data in the computer system is storing on the computer hard disk. The device comprises at least one external interface module, a signal converting module and a power supply controlling module which two are corresponded with the external interface modules. The utilizing of the utility model can make the external device and the system access the data in the hard disk of the computer system when the computer is not started up. Thus, the resource sharing is convenient and quick.
Description
Technical Field
The utility model relates to a computer system technical field, concretely relates to device of storage and reading computer system data.
Background
A standard computer system has a hard disk, which is a storage device for storing systems and data required by the operation of the computer. At present, most of the hard disks used in computers are compatible with IDE (integrated drive electronics), which refers to a hard disk drive that integrates a controller and a disk body, and connects them with a motherboard or an interface card by using a cable. The commonly-described IDE interface is also called ata (advanced Technology attachment) interface, and has the advantages of large storage capacity, low price, good compatibility and the like. However, the ATA interface hard disk used in the computer system has the disadvantage of being only used internally, i.e. the user can only read, modify and store the data on the hard disk in the computer system in the power-on state, and can not share and use the data in the system in the power-off state.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device of storage and reading computer system data makes external equipment or system also can save and read the data in this computer system hard disk under the condition that the computer was not started.
Therefore, the utility model provides a following technical scheme:
an apparatus for storing and reading computer system data stored on a computer hard drive, comprising:
the system comprises at least one external interface module, a signal conversion module corresponding to the external interface module and a power supply control module; wherein,
the external interface module is used for providing connection between the computer system and external equipment;
the signal conversion module is coupled to the external interface module and used for providing conversion between a read/write signal required by the hard disk of the computer system and a read/write signal required by the external interface module;
the power control module is respectively coupled to the external interface module, the signal conversion module and the computer hard disk, and is used for providing power required by the signal conversion module and the computer system hard disk and controlling the switching of the power required by the hard disk when the computer is turned on/off.
The external interface module includes: a universal serial interface USB module and a serial interface COM module.
The signal conversion module includes: USB to ATA (advanced technology attachment) circuit and COM to ATA circuit.
The power control module includes:
the control switch is used for controlling the disconnection/connection of the hard disk power supply circuit when the computer is switched on/off;
and the voltage conversion device is used for providing voltages required by different types of hard disks.
The signal conversion module includes: an application specific integrated circuit chip.
According to the technical scheme provided by the utility model, the device of the utility model can store and read the data in the hard disk of the computer system in the same way as the prior art when the computer is started; under the condition of computer shutdown, the external equipment or system can conveniently store and read the data in the hard disk of the computer system only through one interface and the signal conversion module corresponding to the interface. Therefore, the resource sharing of the computer is simpler and more convenient. When a user needs to extract data in one computer, the whole system can be operated without starting up, the required data can be obtained, and particularly for portable computer equipment, the time and the power are saved, the use is convenient and fast, and great convenience is provided for the user.
Drawings
FIG. 1 is a schematic diagram of an apparatus for storing and reading data in a computer system according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another application example of the device of the present invention.
Detailed Description
The utility model discloses a core lies in through an external interface and the signal conversion module that corresponds, makes the user can save and read the data in the computer hard disk under the state that the computer shut down to provide the switching control of external power source and power for the computer hard disk through a power control module, make the computer when the start, provide power and signal for the hard disk by the computer system itself, make the user freely read, save and modify the data in the hard disk.
In order to make those skilled in the art understand and implement the present invention, the embodiments are described in detail with reference to the drawings, and those skilled in the art can easily understand the objects and technical solutions of the present invention and the effects of the present invention through these embodiments.
Referring to fig. 1, the structure diagram of the apparatus for storing and reading data of a computer system according to the present invention is shown: the utility model discloses the device includes following several parts:
the external interface module 11, the power control module 10 working with the external interface module 11, and the signal conversion module 12 corresponding to the external interface module 11, in the shutdown state of the computer, the external device can read and store the information in the computer hard disk 30 through the external interface module 11. The external interface module 11 is used for providing connection between the computer system and external devices or systems; the signal conversion module 12 is coupled to the external interface module 11 and the computer hard disk 30, and is used for providing conversion between a read/write signal required by the computer hard disk 30 and a read/write signal required by the external interface module 11; the power control module 10 is powered by an external device or system through the external interface module 11, and its output end is coupled to the signal conversion module 12 and the computer hard disk 30 respectively, and is used for providing power required by the signal conversion module 12 and the computer hard disk 30 when the computer is turned off, and controlling the switching of the power when the computer is turned on/off.
The utility model discloses the device still includes:
the external interface module 21, the power control module 20 working with the external interface module 21, and the signal conversion module 22 corresponding to the external interface module 21, in the shutdown state of the computer, the external device can read and store the information in the computer hard disk 30 through the external interface module 21. The functions of the modules and circuits are the same, and will not be described in detail again.
Two external interface modules and working circuits matched with the external interface modules in the device can work independently so as to provide proper interfaces for different external equipment and systems conveniently.
Of course, in order to simplify the device, only one external interface and the circuit cooperating with the external interface can be provided, so as to reduce the space occupied by the device in the computer host and reduce the cost of the device.
The power supply control module 10 includes: a voltage conversion device 101 and a control switch 102.
Also, the power control module 20 includes: a voltage conversion device 201 and a control switch 202. The voltage conversion device 201 is used for providing voltages required by different types of hard disks. For example, the voltage required by a standard desktop computer hard disk is 5V, while a typical notebook computer hard disk requires 3.3V. The control switch 202 is used for controlling the on/off of the output of the voltage conversion device 201 to the power supply line of the hard disk 30 when the computer is turned on/off.
At present, computer hard disks are generally standard ATA hard disks. The ATA hard disk of a computer is used as a system disk (master hard disk) of the computer system or a slave hard disk for backup data. As can be seen from fig. 1, when the computer is turned on, it is not necessary to store or read the data in the hard disk of the computer through the external interface module 11 and the external interface module 21, at this time, the external interface module 11 and the external interface module 21 are in an open circuit state with the external device, and at this time, the computer system controls the reading and writing of the hard disk, that is, the computer south bridge control circuit 31 (which is a control chip in the computer system) provides the working power supply and the ATA signal for the hard disk, so that the user can freely read, store and modify the data in the hard disk.
Under the condition that the computer system is shut down, the computer system does not work, certainly, the computer south bridge control circuit 31 does not have a power supply and does not work at this time, the computer hard disk is controlled by the external device, and the user reads, stores and modifies the data in the hard disk in the computer system through the utility model discloses an interface module (external interface module 11 or external interface module 21) in the device, and the hard disk in the computer system is used as the device end of the external system at this moment, and the action of access and modification is controlled by the external device or system as the Host end. The specific working process is as follows: the external device selects the interface provided by the corresponding external interface module 11 or external interface module 21 according to the device interface, for example, the external device can be connected with the computer through a USB interface and a COM interface, a proper power supply voltage is selected by the voltage conversion device, then the control switch is connected to the power supply circuit of the computer hard disk to provide a proper power supply for the computer hard disk, and meanwhile, the read-write signal of the external device is converted into an ATA signal mode required by the hard disk through the signal conversion module corresponding to the interface module, so that the external device can conveniently store and read the data in the computer hard disk. For example, if the USB interface is selected, the signal conversion module may select a USB to ata (advanced technology attachment) circuit; if the COM interface is selected, the signal conversion module can select a COM to ATA circuit.
As those skilled in the art know, the USB interface is becoming the standard interface of the computer, and the number of devices using the USB interface is increasing. The USB mainly has the advantages of supporting hot plug, being convenient to carry, unified in standard, being capable of connecting a plurality of devices and the like. WINDOWS systems, and especially WINDOWS XP, have been fully supporting USB 2.0 devices. Therefore, in the application of the present invention, the USB interface can be used as an interface for reading and storing the data of the computer system by an external device or system, and accordingly, the signal conversion module selects the USB to ATA circuit, as shown in fig. 2, the specific implementation circuit of each part in the apparatus is described as follows:
1. external interface module: USB interface
The external equipment is connected with the computer through the interface, conducts data through the interface, and reads, stores and modifies data in the system hard disk. The signals of the interface comprise a USB power supply V _ USB, a pair of USB differential signals DP and DM and a ground GND, and the external device provides signals to the computer system through the differential signals DP and DM, sends commands and transmits data.
2. The signal conversion module: USB-to-ATA circuit
The function of the circuit is to convert the signals of different interfaces and work in the shutdown state of the computer system. In this embodiment, the USB signal of the external Host is converted into a standard ATA hard disk signal. Currently, many signal conversion ASICs, such as M5642, CY7C68300A, convert a standard USB signal into a standard ATA signal. The working power supply is provided by an external device or a system, and the working power supply is not working when the external device is not connected.
3. Power supply control module
The power supply of the module comes from an external interface, namely a USB interface. The USB interface has a power input V _ USB, which is a 5V signal. For some notebook computer hard disks powered by 3.3V, the voltage is converted into 3.3V through the control of the voltage conversion device. The external power supply supplies power to the signal conversion module and the hard disk in the shutdown state of the computer system, and does not supply power when the external interface is not connected with external equipment.
4. Signal and power supply circuit of computer system
The partial circuit works in the starting up running state, is a path for reading and writing hard disk data when the computer is normally started up, and is controlled by a South Bridge of the computer system by adopting an ATA standard instruction. In the shutdown state of the computer, no power supply is provided and the computer does not work.
As can be seen from fig. 2, when the computer is powered on, it is the portion of the computer system that is operating, i.e., the hard disk, that is connected to the south bridge. When the computer is shut down, the signal conversion module works, and the hard disk is controlled by the external equipment. The purpose that the computer can read and write the system hard disk no matter the computer is started or shut down is achieved.
The serial interface is also a common interface in the computer system, and fig. 3 shows a schematic structural diagram of the external interface module in the device of the present invention when the external interface module adopts a COM interface.
Referring to fig. 3, a specific implementation circuit of each part in the apparatus is described as follows:
1. external interface module: standard COM interface
In this embodiment, a standard COM interface is used as an interface for reading, storing and modifying data in a system hard disk, and is connected with the outside to conduct data.
2. The signal conversion module: COM to ATA circuit
The function of the circuit is to convert the signals of different interfaces and work in the shutdown state of the computer system. In this embodiment, the COM signal of the external Host terminal is converted into a standard ATA hard disk signal.
3. The power supply control module: supply loop controlled by RING signal
The power control module is controlled by a wakeup signal RING of the COM interface, when the external equipment is connected to the COM interface to read hard disk data, data streams exist on the COM interface, and the RING signal is enabled to be effective at the moment. The RING signal is coupled to the power supply loop and when it is active, it causes the power supply loop to operate, producing the power V _ HDD2 required by the hard disk. When the hard disk data is not read through the COM interface, the RING signal is invalid, and the power supply loop does not work.
4. Signal and power supply circuit of computer system
The partial circuit works in the starting up running state, is a path for reading and writing hard disk data when the computer is normally started up and runs, and is controlled by a South Bridge of the computer system. In the shutdown state of the computer, no power supply is provided and the computer does not work.
When the computer is powered on, it is the portion of the computer system that is operating, i.e., the hard disk, that is connected to the south bridge, that is powered on by the computer system, i.e., the V _ HDD 1.
The utility model discloses an above-mentioned the embodiment of the utility model discloses the device makes external equipment link to each other with the computer through USB interface or COM interface to make the process of external equipment conveniently save and reading the computer hard disk data through the signal conversion circuit that corresponds, should know, the utility model discloses do not confine to these two kinds of interfaces, change slightly, as long as through appropriate interface and the signal conversion that corresponds, for example, infrared interface etc. under the computer state, can provide the control to the computer hard disk, accomplish the purpose that the hard disk read/write operation, accord with promptly the utility model discloses a spirit.
Although the present invention has been described in terms of embodiments, those skilled in the art will recognize that there are numerous variations and modifications of the present invention without departing from the spirit of the invention, and it is intended that the appended claims encompass such variations and modifications without departing from the spirit of the invention.
Claims (5)
1. An apparatus for storing and reading computer system data stored on a computer hard drive, comprising:
the system comprises at least one external interface module, a signal conversion module corresponding to the external interface module and a power supply control module; wherein,
the external interface module is used for providing connection between the computer system and external equipment;
the signal conversion module is coupled to the external interface module and used for providing conversion between a read/write signal required by the hard disk of the computer system and a read/write signal required by the external interface module;
the power control module is respectively coupled to the external interface module, the signal conversion module and the computer hard disk, and is used for providing power required by the signal conversion module and the computer system hard disk when the computer is powered off and controlling the switching of the power required by the hard disk when the computer is powered on/off.
2. The apparatus for storing and reading data of a computer system of claim 1, wherein the external interface module comprises: a universal serial interface USB module and a serial interface COM module.
3. The apparatus for storing and reading data of a computer system of claim 1, wherein the signal conversion module comprises: USB to ATA (advanced Technology attachment) circuit and COM to ATA circuit.
4. The apparatus for storing and reading data of a computer system of claim 1, wherein the power control module comprises:
the control switch is used for controlling the disconnection/connection of the hard disk power supply circuit when the computer is switched on/off;
and the voltage conversion device is coupled to the control switch and used for providing voltages required by different hard disks and the signal conversion module.
5. An apparatus for storing and reading data of a computer system according to claim 1 or 3, wherein the signal conversion module comprises: an application specific integrated circuit chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420048119 CN2689343Y (en) | 2004-04-08 | 2004-04-08 | Device for accessing data in computer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420048119 CN2689343Y (en) | 2004-04-08 | 2004-04-08 | Device for accessing data in computer system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689343Y true CN2689343Y (en) | 2005-03-30 |
Family
ID=34672154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420048119 Expired - Fee Related CN2689343Y (en) | 2004-04-08 | 2004-04-08 | Device for accessing data in computer system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689343Y (en) |
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2004
- 2004-04-08 CN CN 200420048119 patent/CN2689343Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 Termination date: 20130408 |