KR20060085065A - Device for digital video recorder - Google Patents

Abstract

The present invention relates to an external storage device (storage) for a digital video recorder (DVR), and more particularly, a device identification number for distinguishing a plurality of communication modules included in the external storage device for a DVR is inputted in advance in mass production. Rather, the present invention relates to an external storage device that can be easily set using a switch mounted on the external storage device when using the external storage device. According to an exemplary embodiment of the present invention, a storage device includes a plurality of communication modules providing communication capabilities, a device identification number storage unit for storing a device identification number for identifying each of the communication modules corresponding to the communication module, a switch, and a selection of the switch. And a control unit for inputting a predetermined device identification number to the device identification number storage unit, wherein the device identification numbers input to the device identification number storage unit do not overlap each other.

DVR, storage device, communication module, USB, CCTV

Description

Storage device for digital video recorder {DEVICE FOR DIGITAL VIDEO RECORDER}

1 is a diagram illustrating a connection between a DVR storage device and a DVR system according to the present invention.

FIG. 2 is a block diagram illustrating an internal configuration of a storage device for a DVR when a USB communication module is used as the communication module in the present invention.

3 is a block diagram showing an internal configuration of a storage device for a DVR in the case of using the IEEE 1394 communication module as the communication module in the present invention.

4 is a diagram illustrating a relationship between a device identification number stored in a device identification number storage unit and a communication module corresponding thereto according to the present invention.

<Explanation of symbols for the main parts of the drawings>

200: storage device

210, 221, 222: USB port

231, 232, 233: USB communication module

241, 242, 243: device identification number storage unit

250: switch

260: control unit

270: temperature sensor

280: Fan (FAN)

The present invention relates to an external storage device (storage) for a digital video recorder (DVR), and more particularly, a device identification number for distinguishing a plurality of communication modules included in the external storage device for a DVR is inputted in advance in mass production. Rather, the present invention relates to an external storage device that can be easily set using a switch mounted on the external storage device when using the external storage device.

Closed circuit television (CCTV) stores photographing data in a storage medium in analog form. However, in order to improve the analog storage method used in CCTV, a DVR using a digital storage method has been developed. The DVR was developed by a Japanese manufacturer of broadcast ENG cameras. DVR was developed to solve the problem that management procedures such as video tape recorder (VCR), which was used in CCTV, repeats the recording several times, the image quality drops, and video tape is replaced. DVRs use hard disks (HDDs) instead of video tapes, making it easy to play and retrieve stored screens, as well as digital storage, making them convenient for editing and video transfer.

The DVR uses a hard disk to store digital video data. However, the number or capacity of hard disks included in the DVR in the production of the DVR is fixed. Therefore, in practice, an external storage device is used to increase the storage capacity stored in the DVR. The external storage device includes a plurality of hard disks and is connected to the DVR to provide storage capability to the DVR.

In addition, an external storage device for a DVR generally includes a plurality of communication ports including an IN port and an OUT port, and includes a plurality of communication modules corresponding to the communication port. The external storage device for the DVR may be additionally connected with another external storage device for the DVR, or may be connected to another USB device or an IEEE 1394 device. For this purpose, the communication port and communication module (USB chip, IEEE) may be connected to the external storage device for the DVR. 1394 chip, etc.).

However, a communication module such as a USB chip, an IEEE 1394 chip, or the like should have a unique device identification number in the network to which these devices are connected. For example, in FIG. 1, two DVRs 101 and 107 and four storage devices 103, 105, 106 and 108 are connected to each other. In this case, the DVRs 101 and 107 and the storage device 103 are connected to each other. , 105, 106, and 108 each include two USB chips, the total of 12 USB chips included in the DVRs 101, 107 and the storage devices 103, 105, 106, 108 are all different from each other. It must have a device identification number. For example, when mass-producing the storage devices 103 and 105, if the device identification number is input as 0001, 0002, 0003, 0005 to the four USB chips included in the storage device 103, Another device identification number distinguished from 0001, 0002, 0003, and 0005 should be entered. This is intended to uniquely identify a particular device within this network configuration and is defined in the USB standard protocol, the IEEE 1394 standard protocol, or other standard protocols relating to other communication modules.

Therefore, the manufacturer of the external storage device for the DVR must store a unique device identification number for the communication modules included in the storage device in the device identification number storage of each communication module. The device identification number storage may be included in the communication module or may be implemented separately from the communication module. EEPROM is generally used as the device identification number storage unit. Thus, according to the prior art, a manufacturer of an external storage device for a DVR has entered a unique device identification number for each of the communication modules included in the storage at the time of storage production. Typically, the device identification number for identifying the communication module is configured to include vendor identification information (vender ID) of the manufacturer of the communication module, and is configured in the form of 'vendor identification information + device unique identification number'. Therefore, conventionally, the manufacturer of the storage device has stored the device identification number in which the unique device identification number is added to its vendor identification information in the device identification number storage section of each communication module. Input of the device identification number was implemented using a ROM writer, and a storage device manufacturer inputs a device identification number using a ROM writer for communication modules included in the storage device. However, one storage device usually includes four or more communication modules, and thus, in mass production of the storage device, it takes a lot of time to input device identification numbers for communication modules included in the storage device. In addition, such management has been a heavy burden on the storage device manufacturer since the storage device manufacturer has to manage the device identification numbers used by the storage device.

On the other hand, unlike a communication network such as the Internet, in the case of a USB network or an IEEE 1394 network, it is not connected to a single network globally, but is connected within a small range locally. Thus, a communication module such as a USB chip or an IEEE 1394 chip used in a USB network or an IEEE 1394 network, and the like, does not necessarily have a globally unique device identification number like a communication module used in the Internet. Such a communication module has no problem in its operation if it has a device identification number distinguished from other communication modules in a network to which it is connected.

Therefore, in consideration of the above, there is no particular difficulty in use without inputting a device identification number for communication modules included in the storage device at the time of mass production of the storage device for DVR, and the device to the manufacturer of the storage device. There is a need for an apparatus that can reduce the burden on the management of identification numbers.

The DVR's external storage device has several hard disks installed, and there is a problem due to heat generated from these hard disks. That is, electronic devices such as hard disks do not operate normally at a high temperature or higher, but since a plurality of hard disks are installed in the storage device, a lot of heat is generated. Experiments have shown that hard disks typically exhibit good operating conditions up to about 55 degrees Celsius, but become unstable when they exceed 55 degrees Celsius. Therefore, install a fan in the storage device to prevent the hard disk from overheating.

However, the prior art attempts to prevent overheating of the hard disk by installing a fan as described above, and no detailed measures are provided. Therefore, a more detailed overheat prevention method for an external storage device for DVR is required.

The present invention has been made to improve the prior art as described above, the device identification number for distinguishing a plurality of communication modules included in the external storage device for DVR is not fixedly input at the time of mass production, the external storage device of the In order to easily set by using a switch mounted on the external storage device during use, it is an object to increase the mass production efficiency for the communication module.

In addition, the present invention is not particularly difficult to use without inputting a device identification number for the communication modules included in the storage device at the time of mass-production of the storage device for DVR, the manufacturer of the storage device to the management of the device identification number An object of the present invention is to provide an external storage device for DVR that can reduce the burden on the user.

Another object of the present invention is to determine the temperature state of the hard disk included in the external storage device for the DVR with a predetermined temperature sensor, to maintain a stable operating state, and furthermore, the DVR connected to the external storage device in the overheated state is external storage By shutting down before the device, it completely eliminates the possibility of DVR malfunction due to overheating.

Still another object of the present invention is to determine the number of fans operated among the fans for controlling the temperature state of the external storage device for the DVR, by operating the fan when the temperature is low by adjusting the number of operating fans according to the temperature It is to prevent unnecessary fan operation, thereby reducing the power consumption of the external storage device.

It is still another object of the present invention to generate an alarm signal when an abnormality occurs in a fan and the fan revolutions per minute is smaller than a predetermined reference revolution, or when the internal temperature of the external storage device is higher than the predetermined reference temperature. By determining whether the fan is abnormal and the internal temperature is abnormal, it is possible to prevent the external storage device from overheating due to the fan abnormality.

In order to achieve the above object and to solve the above-mentioned problems of the prior art, the storage device according to the present invention includes a plurality of communication modules that provide communication capabilities, and a device identification number for identifying each of the communication modules. A control unit for inputting a predetermined device identification number to the device identification number storage unit according to a selection of the device identification number storage unit, the switch, and the switch correspondingly stored; the device identification numbers to be input to the device identification number storage unit Not duplicated.

Hereinafter, a storage device according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a connection between a DVR storage device and a DVR system according to the present invention.

As shown in FIG. 1, the DVR 101 is connected with one or more cameras 102. The DVR 101 stores digital image data photographed by the camera 102. In addition, the DVR 101 provides a user with a function for searching, managing, and the like stored digital image data, and includes a manager interface for receiving a management command from a predetermined manager. The manager interface receives a management command from an administrator through ordinary computer input means such as a keyboard, a mouse, a touch screen, and the like, and transfers an operation thereof to the CPU of the DVR 101 to process the same. The DVR may use the built-in storage means as a storage means, and as shown in FIG. 1, the external storage device 103 may be used as the storage means.

The camera 102 may be an analog camera such as a CCTV camera. In this case, analog video data received from the DVR 101 is converted into digital data and stored.

The storage device 103 includes a predetermined hard disk and stores photographing data generated from the camera 102. The storage device 103 according to the present invention may additionally install several hard disks according to a user's selection. In an embodiment of the present invention, up to six hard disks may be configured through a temperature management function to be described later. That is, the external storage device includes a plurality of hard disks and is connected to the DVR to provide storage capability to the DVR.

The storage device 103 includes a plurality of communication ports and a plurality of communication modules. The communication port is a means for interworking with other devices and is used to relay communication with the devices connected through the port. As the communication module, a USB chip, an IEEE 1394 chip, and an RS-232C chip may be used. The communication modules maintain device identification numbers which are distinguished from each other to uniquely identify the devices. The device identification number is held in a memory means inside the communication module or in a memory means outside the communication module and is usually stored in an EEPROM. Through the above configuration, the storage device 103 can perform communication with other devices connected through the communication port without collision. In one example, the storage device 103 is connected with the DVR 101, the storage device 105, and the storage device 106, and the storage device 103, the DVR 101, the storage device 105, and the storage device 106. When multiple communication modules are used, each communication module is identified and addressed using a device identification number.

In the prior art, the device identification number of the communication module included in the storage device was input at the time of mass production, but in the present invention, the installer of the storage device operates the switch 104 of the storage device when the storage device is installed at the place of use, thereby providing a communication module. A predetermined device identification number is entered in the EEPROM associated with. In the EEPROM, the space in which the device unique identification number is kept is produced in a blank state, and the administrator operates the switch 104, so that an appropriate device identification number is input to the EEPROM. By using the switch 104, the administrator can more easily enter the device identification number into the device identification number storage. In the present invention, a method of inputting device identification numbers of communication modules included in the storage device when the storage device is installed by using a switch will be described in detail later with reference to FIG. 2.

2 and 3 are block diagrams illustrating an internal configuration of a storage device for a DVR according to the present invention.

First, FIG. 2 is a diagram illustrating a storage device for a DVR using a USB communication module and a USB port. As shown in FIG. 2, the storage device 200 according to the present invention includes a USB port 221 and 222, a USB communication module 231, 232, and 233, a device identification number storage unit 241, 242, and 243, a switch. 250, a controller 260, a temperature sensor 270, and a fan 280 are configured.

The DVR 101 is connected to the storage device 200 through the USB ports 221 and 222, and performs universal serial bus (USB) communication with the storage device 200. In general, the USB port is divided into a USB port IN 221 and a USB port OUT 222. The storage device according to the present invention may be connected to a predetermined USB device in addition to the DVR 101. The USB device includes a keyboard, a monitor, a camera, a storage device, and the like.

The USB ports 221 and 222 and the USB communication modules 231, 232 and 233 provide communication capability to the storage device 200 according to the present invention.

The storage device 200 includes a plurality of USB ports 221 and 222, and the USB ports 221 and 222 are interfaces for connecting the storage device 200 to an external device.

The USB port is a new peripheral connection interface jointly proposed by seven companies including Intel, Microsoft, Compaq, DEC, IBM, Nortel, Canada, and NEC. The USB port allows keyboards, mice, printers, modems, speakers, Computer terminals may be connected to peripheral devices such as external storage devices. Therefore, the external storage device according to the present invention can interoperate with various types of devices supporting a USB interface. When using a USB port, there is no need to set software or hardware when interworking with a peripheral device and a computer terminal, and there is an advantage of easy installation of an external device. The storage device 200 according to the present invention may use the above-described USB port as the USB ports 221 and 222 according to the present invention.

In addition, the storage device according to the present invention may be configured to include an IEEE 1394 port and an IEEE 1394 communication module as well as a configuration including the above-described USB port and a USB communication module.

3 is a diagram illustrating a storage device for a DVR using an IEEE 1394 communication module and an IEEE 1394 port.

As shown in FIG. 3, the storage device 300 according to the present invention includes an IEEE 1394 port 321 and 322, an IEEE 1394 communication module 331, 332, and 333, and a device identification number storage unit 241, 242, and 243. , A switch 250, a controller 260, a temperature sensor 270, and a fan 280.

The DVR 101 is connected to the storage device 300 through the IEEE 1394 ports 321 and 322 and performs IEEE 1394 communication with the storage device 300. In general, the IEEE 1394 port is divided into an IEEE 1394 port IN 221 and an IEEE 1394 port OUT 222 similar to the USB port. The storage device 300 according to the present invention may be connected to a device using a predetermined IEEE 1394 port in addition to the DVR 101. The IEEE 1394 device includes a keyboard, a monitor, a camera, a storage device, and the like.

The IEEE 1394 communication module does not include a predetermined hub unlike a USB communication module that transmits and receives data through a USB hub.

The IEEE 1394 port is a new serial interface specification standardized by the Institute of Electrical and Electronics Engineers (IEEE). The IEEE 1394 port was developed as an interface for connecting home appliances such as video cameras, audio products, televisions, and video cassette recorders (VCRs) to personal computers (PCs) as well as DVRs. Three types of data transfer rates are defined: 100MB, 200MB, and 400MB per second. Two types of data transfer methods may be used, synchronous and asynchronous. Since the synchronous transmission method is a real-time transmission method, it is suitable as an interface for delivering multimedia information such as video or voice, and the asynchronous transmission method transmits data by dividing data. It is suitable for data transfer between devices.

The storage devices 103, 105, 106, and 108 according to the present invention may use any of the above-described communication schemes of USB and IEEE 1394. In addition, the configuration of the device identification number storage unit 241, 242, 243, the switch 250, the control unit 260, the temperature sensor 270 and the fan 280 according to the different communication scheme is the same, and thus 2 and 3 will be described based on the USB communication scheme.

The device identification number storage units 241, 242, and 243 store device identification numbers for identifying each of the USB communication modules 231, 232, and 233 in correspondence with the USB communication modules 231, 232, and 233. Accordingly, communication modules connected to the entire network can uniquely identify each other. In FIG. 2, the device identification number storage units 241, 242, and 243 are illustrated separately from the USB communication modules 231, 232, and 233, but according to an embodiment of the present invention, the device identification number storage unit may be located in the USB communication module. May be included.

EEPROM may be used as the device identification number storage unit 241, 242, or 243. The EEPROM is a memory device that can be electrically erased and written, and can record a relatively small amount of data using a predetermined write module.

In the present invention, the device identification number is not input to the device identification number storage units 241, 242, and 243 of the storage device 200 during mass production. Instead, in mass production, the device identification number storage unit 241, 242, 243 is left empty at the time of mass production, and the administrator uses the switch 250 to install the storage device 200 in the future. 242, 243, the device identification number.

The switch 250 may be implemented as a rotary switch having a plurality of selections. For example, in the present embodiment, a rotary switch capable of eight selections (numbers '0' to '7') is used as the switch 250, and the number of communication modules included in one storage device is four. Explain. In this case, when the rotary switch 250 of the storage device 200 is set to the number '0', the device identification number storage unit corresponding to each of the communication modules 231, 232, and 233 included in the storage device 200 may be included. Device identification numbers '0001', '0002', '0003' and '0004' are input. When the rotary switch 250 of the storage device 200 is set to the number '1', the device identification number storage unit corresponding to each of the communication modules 231, 232, and 233 included in the storage device 200 is included in the storage switch 200. Device identification numbers '0005', '0006', '0007' and '0008' are input. Similarly, when the rotary switch 250 of the storage device 200 is set to the number '7', the device identification number storage unit corresponding to each of the communication modules 231, 232, and 233 included in the storage device 200 is included in the storage unit 200. Device identification numbers '0029', '0030', '0031' and '0032' are input.

The above configuration is a description of an eight-step set of device identification numbers using a rotary switch. However, the storage device according to the present invention uses a number other than four to identify the number of device identification numbers input according to one selection of the switch. It can also be implemented. Similarly, the selection in the switch can be made into a step other than eight steps.

Communication modules only need to have a unique device identification number within the network to which they are connected. However, in the case of a USB chip or an IEEE 1394 chip, the number of communication modules (USB chip or IEEE 1394 chip) connected in one network is not so large. Therefore, as in the present invention, even if the rotary switch is configured to set the device identification number of the storage device accordingly, only a sufficient number of device identification numbers can be selected. There is no other problem.

According to another embodiment of the present invention, eight steps of rotary switches are used for the switch 250. The eighth step is an optional variable including the seventh to seventh steps, and each step includes a predetermined device identification number set. For example, when the switch 250 is set to the 0th stage, eight communication modules are assigned to '0001', '0002', '0003', '0004', and '0005' in each EEPROM corresponding to the communication module. , '0006', ('0007', '0008') are assigned a set of device identification numbers. In addition, when the switch 250 is set to the first stage, eight communication modules have '1001', '1002', '1003', '1004', and '1005' in each EEPROM corresponding to the communication module. , '1006', ('1007', '1008') are assigned a set of device identification numbers. Likewise, any one of the second to seventh steps assigns a device identification number set to each EEPROM in the above-described manner. As a result, the plurality of communication modules included in the storage device 200 are given a predetermined device identification number according to which step of the eight steps is selected.

Referring to FIG. 1, the storage device 103 may interwork with another storage device 105, 106, 108 through the communication port. In this case, the storage devices 105, 106, and 108 must classify the communication module into a device identification number set different from the device identification number set used in the storage device 103 so that there is no conflict between devices. When multiple storage devices 103, 105, 106, and 108 according to the present invention are connected, a device identification number uniquely identified to each communication module by setting different steps of a switch included in each storage device by an administrator. By inputting the collision between storage devices can be prevented.

In one example, the storage devices 103, 105, 106, and 108 include a USB communication port and thus maintain a USB chip as a communication module. The storage devices 103, 105, 106, 108 may be associated via a USB hub. In this case, when the same device identification number exists among the device identification numbers corresponding to the communication module included in the storage devices 103, 105, 106, and 108, the storage devices 103, 105, 106, and 108 are mutually different. There is a possibility of collision. Accordingly, the administrator sets the switch 104 according to the present invention as the 0th step, inputs a device identification number of the 0th step set to the communication module of the storage device 103, and sets the switch for the storage device 105 as the first step. In step I, the device identification number set of the first step is input to the communication module of the storage device 105, and the storage device 106 is set to any one of the remaining steps except the first step and the first step. do. The storage device 108 also selects steps other than those used in the storage 103, 105, 106. Accordingly, the plurality of communication modules included in the storage devices 103, 105, 106, and 108 maintain device identification numbers that are uniquely identified, respectively, so that collisions do not occur between each other. In theory, up to eight storage devices and 64 communication modules can be used in conjunction with an eight-stage set of switches.

In general, storage devices for DVRs are rarely used by connecting eight or more storage devices. Therefore, by using an eight-stage set of switches, in most cases, a collision with an associated storage device can be prevented.

As a result, the device identification number for distinguishing the plurality of communication modules included in the storage device 103 can be easily set by the switch 104 mounted in the storage device 103, thereby increasing the mass production efficiency of the communication module. In addition, it is possible to reduce the management burden of the device identification number that is weighted to the manufacturer of the storage device 103.

Therefore, if two storage devices are connected to each other and each storage device includes six communication modules, the switch 250 is set to the 0th stage for one storage device A, and another storage device B For example, if the switch 250 is set to the first step, the communication modules included in the two storage devices are all given different device identification numbers. Therefore, since there is no communication module having the same device identification number in one network, a collision problem or the like in communication does not occur. In addition, since it is not necessary to input the device identification number at the time of mass production, mass production efficiency becomes high, and it is not necessary to manage the device identification number at the time of mass production.

In addition, by using a predetermined portion of the upper part of the device identification number as a vendor ID, even when connecting with a storage device of another manufacturer, the device identification number may not be conflicted. In other words, if the manufacturer ID is different, the vendor ID is different, even if the device identification number of the communication module using the switch to enter the device identification number of each communication module is different from the storage device of other manufacturers.

The switch 250 provides a plurality of selections, and the plurality of device identification numbers provided according to the first selection of the switch and the device identification numbers provided according to the second selection of the switch do not overlap each other.

That is, the storage device 200 according to the present invention operates the switch 250 to input and maintain a predetermined device identification number in an EEPROM associated with the USB communication modules 231, 232, and 233. Switch 250 according to the present invention can be implemented as a rotary (ROTARY) switch, the rotary switch is generally different from the general switch can select three or more selection variables, the rotary switch is a predetermined corresponding to each selection Sets the device identification number set. For example, when the switch is selectable in five steps as a selection variable, and is mounted in the storage device 200 including six communication modules, a set of six different device identification numbers may be set in five steps. That is, by '5 * 6 = 30', the switch can distinguish 30 communication modules.

In the storage device 200 according to an embodiment of the present invention, when the second storage device is linked and each uses a method of setting a device identification number according to the present invention, all communication modules may be changed by different steps of the switches. You can enter the device identification number that is uniquely identified in. As a result, the storage device 200 and the second storage device do not encounter each other. For example, when the switch of the storage device 200 is set to the selection variable of the first stage, and the switch of the second storage device is set to the selection variable of the second stage, due to the set of device identification numbers corresponding to each step, Duplicate device identification numbers are not entered in each communication module. That is, in the case of a storage device including a rotary switch that maintains a set of four device identification numbers for each step, five storage devices including four or less communication modules can be connected and used without collision. By 5 * 4 = 20, up to 20 communication modules can be uniquely identified.

The controller 260 inputs a set of predetermined device identification numbers into the device identification number storage units 241, 242, and 243 according to the selection of the switch 250. Namely, the device identification number storage unit 1, the device identification number storage unit 2,... The device identification number storage unit N receives a uniquely identifiable device identification number according to the set of the device identification numbers.

The controller 260 checks which stage the switches 241, 242 and 243 are currently set to, and sets a predetermined set of device identification numbers according to the above steps. 243).

4 is a diagram illustrating a relationship between a device identification number stored in a device identification number storage unit and a communication module corresponding thereto according to the present invention.

The device identification number storage unit 241, 242, 243 maintains a predetermined device identification number for each communication module in one device identification number set. The plurality of communication modules include communication module 1, communication module 2,... , Communication module N, and device identification numbers corresponding to the communication modules are '11110001', '11110002',... , May be generated in the form of '1111000N'. The device identification number is one of a plurality of device identification number sets, the device identification number storage unit 1, the device identification number storage unit 2,. , The device identification number storage unit N. In addition, the manager may operate the switch 250 to the plurality of communication modules to input a second device identification number set that is distinguished from the device identification number set. For example, by operating the switch 250, '11110011', '11110012',... The second device identification number set may be generated as '1111001N' and input to each communication module, and thus may be distinguished from the device identification number set.

'1111' consecutively preceding the device identification number is predetermined vendor identification information, and in the case of a communication module mass-produced by the same production company, the vendor identification information included in the device identification number may be configured identically. Accordingly, the storage device 200 may distinguish the USB communication modules 231, 232, and 233 from communication modules included in other devices, and by setting the steps of the switch 250, a second device existing in the same network. There will also be no conflict with communication modules in storage devices and other USB devices.

2, the temperature sensor 270 of FIG. 2 measures the temperature of the storage device 200.

The storage device 200 includes a predetermined temperature sensor 270.

The temperature of the storage device 200 may increase due to an internal device such as a hard disk, and the storage device 200 may malfunction due to such a temperature increase, which may cause serious damage to the internal device. Therefore, it is necessary to adjust the temperature of the storage device 200. In particular, if a hard disk malfunctions due to high temperature, the stored data may be damaged, and in this case, it becomes a fatal problem for a DVR product for security. Accordingly, the temperature sensor 270 is attached to the storage device 200, and the temperature sensor 270 periodically detects the internal temperature of the storage device 200. The controller 260 sets and maintains a threshold for the temperature of the storage device 200 to a predetermined reference temperature. When the temperature of the storage device 200 periodically detected by the temperature sensor 270 is a predetermined alarm temperature higher than the reference temperature, the controller 260 generates a predetermined alarm signal, and the internal temperature is higher than the alarm temperature. In the high case, the hard disk installed in the storage device 200 is shut down. Accordingly, the storage device 200 may safely maintain data stored in the hard disk.

In addition, the storage device 200 is connected to the DVR, and when the storage device is shut down before the DVR, the DVR cannot store data received by the DVR. Therefore, in a situation where both the DVR and the storage device should be shut down at a high temperature, it is preferable that the DVR be shut down before the storage device. To this end, a second temperature sensor may be mounted on the DVR which is an external device. The second temperature sensor detects a second temperature generated by the DVR. If the second temperature is higher than the second reference temperature, the DVR is shut down. The reference temperature and the second reference temperature may be set by the administrator. In a situation where both the DVR and the storage device have to be shut down in a high temperature state, the reference temperature is set higher than the second reference temperature so that the DVR shuts down before the storage device, so that the DVR is more than the storage device 200. It can be shut down first. This may prevent problems that may occur when the storage device 200 is shut down first. For example, when the hard disk of the storage device 200 is shut down before the DVR, the recording data must be stored on the DVR side, but the hard disk cannot be accessed. Therefore, the DVR may be shut down before the storage device 200 to minimize loss of photographing data and damage to the internal device of the storage device.

The fan 280 suppresses the temperature rise of the storage device according to the present invention.

The storage device 200 may further include a plurality of fans FAN, and the temperature increase of the storage device 200 may be suppressed by adjusting the number of fans operated according to the reference temperature. The temperature sensor 270 periodically monitors the temperature of the storage device 200, and when it is detected that the temperature rises, the controller 260 may adjust the number of fans operated among the plurality of fans. For example, when the temperature of the storage device 200 is close to the average temperature based on statistics or experiments, two fans may be operated among four fans, and the fans may be increased by one when the temperature rises by 5 degrees. Accordingly, when the temperature of the storage device 200 rises 10 degrees above the average temperature, all four fans are operated. When the temperature exceeds the reference temperature of 10 degrees or more above the average temperature, the hard disk is shut down. The alarm device may set an alarm temperature between the average temperature and the temperature at which the average temperature rises by 10 degrees, and when the temperature sensor reaches the alarm temperature, the storage device 200 may generate a predetermined alarm signal.

That is, when the temperature of the storage device is low, the number of fans operated is reduced. When the temperature of the storage device is high, the number of fans operated is increased. According to the present embodiment, since the number of operating fans can be properly adjusted, the number of operating fans is reduced when the temperature of the storage device is low to reduce power consumption, and the operation of the operating fans when the temperature of the storage device is high. The higher the number, the lower the temperature of the storage device.

In addition, the controller 260 checks the revolutions per minute of the fan 280, and generates a predetermined alarm signal when the revolutions per minute is less than the reference revolutions. The storage device 200 may generate a predetermined alarm signal by simultaneously determining the number of operations of the fan and the number of revolutions per minute of the fan. The alarm signal is generated through a predetermined display module, a speaker module, a light emitting element, or a buzzer associated with the storage device 200. Accordingly, the predetermined manager does not check the state of the storage device 200 from time to time. If the temperature problem occurs, the action can be taken immediately. The temperature sensor 270 and the fan 280 may prevent unnecessary operation of the fan, prevent overheating, and reduce power consumption of the storage device 200.

The storage device 200 according to the present invention may further include a predetermined power management module. When the power supply is stopped again after the power supply is stopped due to a shutdown or the like, the power management module determines whether the power switch of the storage device 200 is in an ON / OFF state. When the power switch is in the ON state, the power management module switches the storage device 200 to the ON state, and when the power switch is in the OFF state, the power management module maintains the storage device 200 in the OFF state.

According to the present invention, a device identification number for distinguishing a plurality of communication modules included in an external storage device for a DVR is not fixedly input at the time of mass production, but a switch mounted on the external storage device when the external storage device is used. By making it simple to use, the mass production efficiency for the communication module can be improved.

According to the present invention, there is no particular difficulty in use without inputting a device identification number for communication modules included in the storage device at the time of mass production of the storage device for DVR, and management of the device identification number to the manufacturer of the storage device. Reduce the burden on

According to the present invention, the temperature state of the hard disk included in the external storage device for the DVR is determined by a predetermined temperature sensor to maintain a stable operating state, and the DVR connected to the external storage device in an overheated state is more than the external storage device. By shutting down first, the possibility of malfunction of the DVR due to overheating can be completely eliminated.

According to the present invention, by grasping the number of fans operated among the fans for controlling the temperature state of the external storage device for the DVR, by adjusting the number of fans operated in accordance with the temperature so as not to operate some fans when the temperature is low In addition, unnecessary fan operation may be prevented, thereby reducing power consumption of the external storage device.

According to the present invention, by generating an alarm signal when an abnormality occurs in the fan and the fan revolutions per minute is less than a predetermined reference revolution, the administrator can easily determine whether the fan is abnormal, and according to the fan abnormality You can prevent the external storage device from overheating.

Claims (6)

A storage device, A plurality of communication modules providing communication capabilities; A device identification number storage unit for storing a device identification number for identifying each of the communication modules corresponding to the communication module; switch; And A control unit for inputting a predetermined device identification number to the device identification number storage unit according to the selection of the switch, wherein the device identification numbers input to the device identification number storage unit do not overlap each other; Storage device comprising a. The method of claim 1, The switch provides a plurality of selections, wherein the plurality of device identification numbers provided according to the first selection of the switch and the plurality of device identification numbers provided according to the second selection of the switch do not overlap each other. Storage device. The method of claim 1, Further comprising a temperature sensor for measuring the temperature of the storage device, The controller is configured to shut down a hard disk installed in the storage device when the first temperature measured by the temperature sensor is equal to or greater than a first predetermined reference temperature. The method of claim 3, The storage device is coupled to an external device, the external device including a second temperature sensor and shut down if the temperature measured by the second temperature sensor is greater than or equal to a second reference temperature; The storage device is set higher than the second reference temperature. The method of claim 3, The apparatus further includes a plurality of fans, wherein the controller adjusts the number of fans operated according to the first reference temperature. The method of claim 1, The storage device further comprises a plurality of fans (FAN), the control unit checks the number of revolutions per minute of the fan, and generates a predetermined alarm signal when the fan is less than the reference number of revolutions.

Images