JP2008299484A - Storage device - Google Patents

Abstract

An object of the present invention is to provide a storage device that can easily set an arbitrary device ID in an arbitrary storage device in a plurality of additional storage devices used for operation of a monitoring video recording device.
Storage devices 1a to 1n according to the present invention are storage devices 1a to 1n for recording data from a recording device via an interface, and include a device ID setting switch 12 with a selectable setting value. By selecting the setting value of the device ID setting switch 12, the device information of the storage devices 1a to 1n acquired by the recording device via the interface can be changed.
[Selection] Figure 1

Description

  The present invention relates to a storage apparatus used for monitoring video recording or the like for recording digitized video signals or the like on a plurality of recording devices.

  Surveillance video recording devices have a function of continuously recording for 24 hours, and banks and other industries are obliged to store data recorded by administrative guidance for a certain period of time. Therefore, there are operations in which digital data is recorded on a removable medium and stored as a library, or a large number of fixed, high-speed, large-capacity recording media are connected to store data for a certain period. The main types of media that can be taken out are rotating disk media such as CD-ROM and DVD-ROM. A typical fixed medium capable of high-speed and large-capacity recording is a hard disk drive (hereinafter referred to as HDD).

  Here, the configuration of the conventional general video recording device for monitoring is not only the HDD built in the video recording device main body but also a large number of storage devices with built-in HDD using USB (Universal Serial Bus). In this configuration, the operation for extending the recordable time and the operation using the storage device added by USB for backup are performed.

  By connecting a large number of additional storage apparatuses to the monitoring video recording apparatus in this way, the USB host controller in the monitoring video recording apparatus executes enumeration. Enumeration allocates unique addresses to USB devices in many connected storage devices, reads data structures from USB devices, and prepares for data transfer. This allocated address is valid until the USB device is removed or the monitoring video recording apparatus as the system is reset. When enumeration is performed next, another address may be allocated to the USB device, and the ID of the device of the storage apparatus connected via USB changes dynamically (see Non-Patent Document 1 below).

Jean Axelson, "All of USB device development including USB 2.0, USB Complete", 2nd edition, SIB Access Inc., August 1, 2002, p. 79-110

  The conventional storage device creates another device identification ID for identifying the additional storage device based on the ID information allocated by the USB host device, and this device identification ID is built into the storage device. It is stored as data in the HDD.

  However, in the device identification ID setting method as described above, it is difficult to specify which ID is assigned to which unit of the extended storage apparatus to which the user is connected in large numbers. In addition, it is difficult to recognize which ID is set for each of the extended storage apparatuses connected in large numbers.

  Therefore, in order to store desired video recording data, when a specific expansion device is removed from the operation of the monitoring video recording device and stored, the additional storage device containing the desired recording video is specified. There is a problem that the ID cannot be easily identified because the ID is not known from the outside.

  In addition, even in the operation of surveillance video recording devices such as main recording and backup, where many additional storage devices with different operations are connected at the same time, the ID number cannot be easily specified, so the additional storage devices with different operations There was a problem that could not be identified easily.

  In addition, when operating a video recording device for monitoring with a large number of additional storage devices connected, even if an abnormality occurs in the HDD built in the additional storage device, the ID cannot be easily identified. There was a problem that it was difficult to specify whether to replace the HDD.

  Accordingly, the present invention has been made to solve such a problem, and in a plurality of additional storage devices used for the operation of the monitoring video recording device, a storage in which an arbitrary device ID can be easily set in an arbitrary storage device. The object is to obtain a device.

  The storage device according to the present invention is a storage device that records data from a recording device via an interface, and includes a device ID setting switch with a selectable setting value, and selects the setting value of the device ID setting switch. As a result, the device information of the storage device acquired by the recording device can be changed via the interface.

  According to the storage apparatus of the present invention, the expansion storage apparatus is provided with a device ID setting switch, and by setting the switch, it is possible to set the storage apparatus information to identify the storage apparatus. An arbitrary ID can be set for each storage device, and the ID of the additional storage device can be easily identified.

<Embodiment 1>
FIG. 1 shows the configuration of the storage apparatuses 1a to 1n according to the first embodiment of the present invention, and shows the storage apparatuses 1a to 1n that record data from the recording apparatus via an interface. In the present embodiment, the recording apparatus is described as the monitoring video recording apparatus 2 and the interface is described as the USB interface 5.

  The storage devices 1a to 1n include a device ID setting switch 12 with selectable setting values, a USB device 11 that transmits and receives information to and from the monitoring video recording device 2 via the USB interface 5, and HDDs 13a and 13b that store information. In addition, the USB device 11 includes a register 14 that is a storage element used for calculation and holding of an execution state. The USB device 11 is connected to the USB host 21 of the monitoring video recording apparatus 2 via the USB interface 5 to transmit / receive information. Here, the device ID setting switch 12 in the present embodiment is a rotary switch, a dip switch, or the like.

  FIG. 2 shows the configuration of the descriptor 112 of the USB device 11 in the storage apparatuses 1a to 1n according to the first embodiment of the present invention. The descriptor 112 is a collection of data for correctly recognizing the storage apparatuses 1a to 1n on the monitoring video recording apparatus 2 side. The descriptor 112 describes the device descriptor 113 that describes general information about the USB device 11, devices, interfaces, and the like. There are types such as a string descriptor 115 that can be described or set a device serial number character string. The device descriptor 113 includes types such as iProduct 114 that is an index to the string descriptor 115 that indicates a product and iSerialNumber 116 that is an index to the string descriptor 115 that indicates a production number.

  Here, the relationship between the USB host 21 and the descriptor 112 of the USB device 11 will be described. When the USB host 21 enumerates, a control transfer is performed to the USB device 11 to request the descriptor 112. Since the USB device 11 must return the descriptor 112 when requested, it is necessary to store information in the descriptor 112. As the enumeration progresses, the device small element descriptor 112 is gradually requested, and the USB host 21 acquires the information of the USB device.

  Next, an operation in which the storage apparatus 1a stores device information in the descriptor 112 of the USB device 11 will be described. First, when the power supply of the storage apparatus 1a is activated and the USB device 11 is activated, the USB device 11 reads the setting value of the device ID setting switch 12. The read device ID setting value is set in the register 14 in the USB device 11. Based on the device ID setting value set in the register 14, the USB device 11 sets device information in a descriptor 112 representing a product, for example, iProduct 114 of the device descriptor 113. Here, since iProduct 114 is an index to the string descriptor 115, an index value is set in iProduct 114, and a character string corresponding to the set value of the device ID is set in the string descriptor 115.

  Similarly, when the power supplies of the storage apparatuses 1b to 1n are activated, the storage apparatuses 1b to 1n read the setting values set by the respective device ID setting switches 12 and set them in the register 14 of the USB device 11. Each of the storage apparatuses 1b to 1n sets an index value in iProduct 114 of the device descriptor 113, and sets a character string corresponding to the value set in the register 14 in the USB device 11 in the string descriptor 115. Here, the relationship between the device ID setting value and the character string set in the string descriptor 115 is, for example, as shown in Table 1 below. In this way, device information can be stored in the descriptor 112.

  Next, a communication operation between the monitoring video recording apparatus 2 and the storage apparatuses 1a to 1n will be described. The system of the monitoring video recording apparatus 2 is activated in a state where the USB devices 11 of the storage apparatuses 1a to 1n are connected to the ports on the host side. The USB host 21 of the monitoring video recording device 2 learns that the USB device 11 is connected, and requests the storage devices 1a to 1n to reset the USB device 11. After the USB device 11 exits from the reset state, a signal path is established with the USB device 11.

  Next, the USB host 21 assigns a unique address to the USB device 11 of each of the storage apparatuses 1a to 1n. The USB host 21 requests the descriptor 112 from the new allocated address and reads the device descriptor 113. The USB host 21 performs subsequent communication using information read from the device descriptor 113 of the USB device 11 in each of the storage apparatuses 1a to 1n.

  Here, as described above, an index value for the string descriptor 115 is set in the iProduct 114 of the device descriptor 113 of the USB device 11 in each of the storage devices 1a to 1n, and the string descriptor 115 indicated by the index is set in the string descriptor 115. Includes a character string corresponding to the ID number set by the device ID setting switch 12. Therefore, the USB host 21 can acquire the device information of the storage devices 1a to 1n by reading the descriptor including the device information sent from the USB device 11, that is, the user sets the storage devices 1a to 1n. All ID numbers can be acquired.

  In this way, the monitoring video recording apparatus 2 can identify the storage apparatuses 1a to 1n based on the ID number set by the user with the device ID setting switch 12 provided in each of the storage apparatuses 1a to 1n. Therefore, the device ID is set in the storage devices 1a to 1n based on this information. That is, when the user selects the setting value of the device ID setting switch 12, the device information of the storage devices 1a to 1n acquired by the monitoring video recording device 2 can be changed.

  As described above, the ID set by the ID setting switch of the storage devices 1a to 1n can be used by the monitoring video recording device 2, and a desired ID can be selected from the plurality of additional storage devices 1a to 1n connected. The storage devices 1a to 1n can be easily identified.

<Embodiment 2>
In the present embodiment, the USB device 11 of each of the storage apparatuses 1a to 1n is set by the device ID setting switch 12, and the device information corresponding to the ID setting value set in the register 14 is used as the setting field of the device descriptor 113. Set to iSerialNumber 116. The difference from the first embodiment is that the device information is set in the iSerialNumber 116 of the device descriptor 113. Here, since iSerialNumber 116 is an index to the string descriptor 115, an index value is set in the iSerialNumber 116, and a character string corresponding to the set value of the device ID is set in the string descriptor 115.

  Next, a communication operation between the monitoring video recording apparatus 2 and the storage apparatuses 1a to 1n will be described. When the system of the monitoring video recording apparatus 2 is activated, the USB host 21 of the monitoring video recording apparatus 2 reads the device descriptor 113 of the storage apparatuses 1a to 1n. The USB host 21 performs subsequent communication using information read from the device descriptor 113 of the USB device 11 in each of the storage apparatuses 1a to 1n.

  Here, as described above, an index value for the string descriptor 115 is set in the iSerialNumber 116 of the device descriptor 113 of the USB device 11 in each of the storage apparatuses 1a to 1n, and the string descriptor 115 indicated by the index has the index value. A character string corresponding to the ID number set by the device ID setting switch 12 is included. Therefore, the USB host 21 can acquire the device information of the storage devices 1a to 1n by reading the descriptor sent from the USB device 11, that is, all the ID numbers set by the user in the storage devices 1a to 1n. Can be acquired.

  In this way, the monitoring video recording apparatus 2 can identify the storage apparatuses 1a to 1n based on the ID number set by the user with the device ID setting switch 12 provided in each of the storage apparatuses 1a to 1n. Therefore, the device ID is set in the storage devices 1a to 1n based on this information. Other configurations and operations are the same as those in the first embodiment, and thus description thereof is omitted.

  The setting field for the setting value set by the device ID setting switch may be another field such as iManufacturer, for example. Further, information corresponding to the ID number may be set in a plurality of setting fields of the device descriptor 113 as a setting value setting field set by the device ID setting switch.

  As described above, the ID set by the ID setting switch of the storage devices 1a to 1n can be used by the monitoring video recording device 2, and a desired ID can be selected from a plurality of additional storage devices 1a to 1n connected. The storage devices 1a to 1n can be easily identified.

<Embodiment 3>
FIG. 3 shows the configuration of the storage apparatuses 3a to 3n according to the third embodiment of the present invention. The difference from the first embodiment is that the parallel connection between the device ID setting switch 12 and the USB device 11 is performed. The serial converter 15 is further provided.

  Next, an operation in which the storage apparatus 3a stores device information in the descriptor 112 of the USB device 11 will be described. First, when the power supply of the storage device 3 a is activated and the USB device 11 is activated, the USB device 11 supplies a clock to the parallel-serial converter 15. The parallel-serial converter 15 reads the setting value of the device ID setting switch 12 connected to the parallel input interface side at the timing of the load signal supplied from the USB device 11 and sends it from the serial output interface.

  The USB device 11 reads the setting value of the device ID setting switch 12 sent as serial data from the parallel-serial converter 15. The read device ID setting value is set in the register 14 in the USB device 11. Based on the device ID setting value set in the register 14, the USB device 11 sets device information in a descriptor 112 representing a product, for example, iProduct 114 of the device descriptor 113. Here, since iProduct 114 is an index to the string descriptor 115, an index value is set in iProduct 114, and a character string corresponding to the set value of the device ID is set in the string descriptor 115.

  Similarly, when the power supplies of the respective storage apparatuses 3b to 3n are activated, the respective storage apparatuses 3b to 3n read the setting values set by the respective device ID setting switches 12 through the parallel-serial converter 15, and the USB device 11 Is set in the register 14. Each storage apparatus sets an index value in iProduct 114 of the 3b to 3n device descriptor 113 and sets a character string corresponding to the value set in the register 14 in the USB device 11 in the string descriptor 115. Other configurations and operations are the same as those in the first embodiment, and thus description thereof is omitted.

  As described above, the USB devices 11 of the storage apparatuses 3a to 3n can read the setting value of the device ID setting switch 12 with a small number of signal lines. Further, the ID set by the ID setting switch of the storage devices 3a to 3n can be used by the monitoring video recording device 2, and a storage with a desired ID can be selected from the plurality of additional storage devices 3a to 3n connected. The devices 3a to 3n can be easily identified.

<Embodiment 4>
FIG. 4 shows the configuration of the storage apparatuses 4a to 4n according to the fourth embodiment of the present invention. The difference from the third embodiment is that an operation mode setting switch 16 with a selectable setting value is further provided. It is a prepared point.

  Next, an operation in which the storage apparatus 4a stores device information in the descriptor 112 of the USB device 11 will be described. First, when the power supply of the storage apparatus 4 a is activated and the USB device 11 is activated, the USB device 11 reads the setting values of the device ID setting switch 12 and the operation mode setting switch 16 through the parallel-serial converter 15. The read device ID setting value and operation mode setting value are set in the register 14 in the USB device 11. The USB device 11 sets device information and operation mode information in a descriptor 112 representing a product, for example, iProduct 114 of the device descriptor 113 based on the device ID setting value and operation mode setting value set in the register 14. Here, since iProduct 114 is an index to the string descriptor 115, an index value is set in iProduct 114, and a character string corresponding to the device ID setting value and the operation mode setting value is set in the string descriptor 115.

  Similarly, when the power supply of each of the storage apparatuses 4b to 4n is started, each of the storage apparatuses 4b to 4n converts the setting values set by the device ID setting switch 12 and the operation mode setting switch 16 into parallel-serial converters. 15 and set in the register 14 of the USB device 11. Each of the storage apparatuses 4b to 4n sets an index value in iProduct 114 of the device descriptor 113, and sets a character string corresponding to the value set in the register 14 in the USB device 11 in the string descriptor 115.

  Next, a communication operation between the monitoring video recording apparatus 2 and the storage apparatuses 4a to 4n will be described. When the system of the monitoring video recording apparatus 2 is activated, the USB host 21 of the monitoring video recording apparatus 2 reads the device descriptor 113 of the storage apparatuses 4a to 4n. An index value to the string descriptor 115 is set in the iProduct 114 of the device descriptor 113 of the USB device 11 in each of the storage apparatuses 4a to 4n, and the device ID setting switch 12 is set in the string descriptor 115 indicated by the index. And the character string corresponding to the operation mode set by the operation mode setting switch 16 is included.

  The monitoring video recording apparatus 2 reads the operation mode information sent from the USB device 11, recognizes the operation mode of the storage apparatuses 4a to 4n, and determines the operation of the HDDs 13a and 13b. The operation mode of the HDDs 13a and 13b set by the operation mode setting switch is a separate operation in which the two HDDs 13a and 13b can be read and written individually, and a mirroring operation in which the same data is written in the two HDDs 13a and 13b. The HDD 13a and 13b can be combined into a single HDD, and can be read / written as a spanning operation. Other configurations and operations are the same as those in the third embodiment, and a description thereof will be omitted.

  In this way, the monitoring video recording apparatus 2 can acquire the apparatus ID number from the apparatus information set in each of the storage apparatuses 4a to 4n, and can identify the storage apparatuses 4a to 4n by this ID number. It becomes. Similarly, the monitoring video recording apparatus 2 can acquire the operation mode setting value from the operation mode information set in the storage apparatuses 4a to 4n, and the operation mode of the storage apparatuses 4a to 4n is determined based on the operation mode setting value. It becomes possible to identify. Based on these pieces of information, device IDs are set in the storage apparatuses 4a to 4n.

  As described above, the ID set by the device ID setting switch 12 of the storage apparatuses 4a to 4n can be used in the monitoring video recording apparatus, and the operation mode of the storage apparatuses 4a to 4b can be identified. Thus, the storage devices 4a to 4n having a desired ID can be easily specified from the plurality of connected storage devices 4a to 4n, and the operation mode of the storage devices 4a to 4n can also be specified.

1 is a diagram showing a configuration of a storage device according to a first embodiment of the present invention. It is the figure which showed the structure of the descriptor in Embodiment 1 of this invention. It is the figure which showed the structure of the storage apparatus in Embodiment 3 of this invention. It is the figure which showed the structure of the storage apparatus in Embodiment 4 of this invention.

Explanation of symbols

  1a to 1n, 3a to 3n, 4a to 4n storage device, 2 monitoring video recording device, 5 USB interface, 11 USB device, 12 device ID setting switch, 13a, 13b HDD, 14 register, 15 parallel serial converter, 16 Mode setting switch, 112 descriptor, 113 device descriptor, 114 iProduct, 115 string descriptor, 116 iSerialNumber.

Claims (6)

In a storage device that records data from a recording device via an interface,
Equipped with a device ID setting switch with selectable setting values,
A storage device capable of changing device information of the storage device acquired by the recording device via the interface by selecting a setting value of the device ID setting switch. The interface is a USB interface;
Further comprising a USB device for transmitting and receiving information to and from the recording device via the USB interface;
The device information is specified by setting information corresponding to the setting value of the device ID setting switch in the device descriptor and string descriptor of the USB device, and the device information is sent to the recording device via the USB interface The storage device according to claim 1.   The storage apparatus according to claim 2, wherein information corresponding to the device ID setting value is set in a plurality of fields of the device descriptor. A parallel serial converter,
The storage device according to claim 2 or 3, wherein the USB device acquires a setting value of the device ID setting switch via the parallel-serial converter. The storage device is composed of a plurality of HDDs,
It further includes an operation mode setting switch with selectable setting values.
The storage apparatus according to claim 1, wherein operation mode information of the storage apparatus acquired by the recording apparatus via the interface can be changed by selecting a setting value of the operation mode setting switch. The interface is a USB interface;
Further comprising a USB device for transmitting and receiving information to and from the recording device via the USB interface;
The operation mode information is specified by setting information corresponding to a setting value of the operation mode setting switch in a device descriptor and a string descriptor of the USB device, and the operation mode information is transmitted to the recording device via the USB interface. The storage device according to claim 5, wherein

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