JP2009267551A - Data transmission device, data request device, and data reproduction system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data transmission device specifying an apparatus to be the opposite party of data transmission/reception even when the plurality of apparatuses with the same function are connected to the same network, and also to provide a data request device and a data reproduction system. <P>SOLUTION: The data transmitting device is connected to the network and transmits data to the network in response to a data request from the data request device connected to the network. The data transmitting device is stored in a case body commonly used for the data request device, and also connected to the data request device with the use of an interface different from that of the network. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a data transmitting apparatus that transmits data by being connected to a network, a data requesting apparatus that requests data, and a data reproduction system that records and reproduces data, and in particular, even if a plurality of apparatuses are connected to the same network. The present invention relates to a data transmission device, a data requesting device, and a data reproduction system capable of transmitting / receiving data to / from devices.

  It is common to use an information processing apparatus connected to a network typified by the Internet defined by the IEEE 802 standard and operating in cooperation with each other. For example, by constructing a network conforming to the IEEE 802 standard (hereinafter simply referred to as “network”) in a home and connecting the personal computer and the file server to the network, the personal computer can transfer data to the file server. Writing and reading can be performed.

  When a device connected to the network is used from another device, it is necessary to specify and set the device. Japanese Patent Application Laid-Open No. 2004-228561 discloses a multifunction device that can display a list of devices connected to a network on a user terminal and select a device that the user uses.

JP 2007-251330 A

  Various devices can be connected to the network, and a plurality of devices having similar functions can be connected. Here, for example, when the file server A and the file server B exist on the network, the network information of the file server A and the file server B cannot be associated with the physical information of the device.

  That is, for example, when there is a personal computer and file server A in the study and there is a file server B in the living room, two file servers are recognized when the personal computer refers to the network. Here, when data is written from one personal computer to one of the two file servers on the intention of the file server A, a situation where the file server B is actually written may occur.

  At this time, since the user thinks that no data is written in the file server B in the living room, the user may want to turn off the power of the file server B from the viewpoint of power saving or the like. However, if the power of the file server B is turned off, the data is actually written to the file server B. Therefore, it becomes impossible to access the data from the personal computer, which causes confusion for the user. Become.

  The problem that the network information and the physical information of the device cannot be associated with each other is that the personal computer and the file server are housed in the same housing and share the power system, but each has a configuration in which each is connected to the network. 1 is connected to a file server, a program is recorded on the file server, and the program recorded on the file server is reproduced on a personal computer. This is particularly noticeable when connecting to the PC. This is because processing such as power off and restart is performed on the entire housing.

  In the multifunction device described in Patent Document 1, by setting in advance, attributes of devices connected to the network, such as name, location, and group, can be displayed on the user terminal. Thereby, the user can use devices on the network without hesitation. However, in order to perform such display, these attributes must be set in advance. When presetting, the list is displayed with no attributes, and the above problem still remains.

  Therefore, the present invention provides a data transmission device, a data requesting device, and a data reproduction system capable of specifying a device that is a partner of data transmission / reception even when a plurality of devices having the same function are connected to the same network. With the goal.

  A first data transmitting apparatus of the present invention is connected to a network and transmits data to the network in response to a data request from a data requesting apparatus connected to the network. It is housed in the body and is connected to the data requesting device through an interface different from the network.

  The second data transmitting apparatus of the present invention comprises a data storage means for storing data, a first communication interface means for connecting to a network, a second communication interface means different from the first communication interface means, An identifier storage unit that stores a predetermined identifier, an identifier transmission unit that transmits the identifier via the second communication interface unit, and a data transmission request that requests transmission of data via the first communication interface unit And a data transmission means for transmitting data via the first communication interface means when the identifier is included.

  The data requesting device of the present invention is connected to a network, requests a data transmitting device connected to the network to transmit data to the network, is housed in a common housing with the data transmitting device, and It is characterized in that it is connected to the data transmission device through an interface different from the network.

  The first data reproduction system of the present invention includes a data storage means for storing data, a first communication interface means for connecting to a network, a second communication interface means different from the first communication interface means, A data transmission device having an identifier storage means for storing a predetermined identifier; a data request means for transmitting a data transmission request for requesting data transmission; a third communication interface means for connecting to a network; A data requesting device having a fourth communication interface means different from the communication interface means of the first communication interface means, a first communication interface means, a third communication interface means, and a second communication interface means. The fourth communication interface means is communicably connected to the data transmission device. Transmits the identifier to the data requesting device via the second communication interface means, the data requesting device transmits the identifier to the data transmission device via the third communication interface means, The requested data is transmitted when the identifier received via the communication interface means matches the predetermined identifier stored in the identifier storage means.

  The second data reproduction system of the present invention comprises a data storage means for storing data, a first communication interface means for connecting to a network, and a second communication interface means different from the first communication interface means. A data transmission device, a data request unit for transmitting a data transmission request for requesting data transmission, a third communication interface unit for connecting to a network, and a fourth communication interface different from the third communication interface unit And a data requesting device having an identifier storage means for storing a predetermined identifier in the same housing, a first communication interface means, a third communication interface means, and a second communication interface means The fourth communication interface means is communicably connected to the data requesting device. Transmits the identifier to the data transmitting device via the fourth communication interface means, and the data requesting device receives the predetermined identifier and the data transmission request stored in the identifier storage means via the third communication interface means. The data transmission device transmits the requested data when the predetermined identifier received via the first communication interface means matches the identifier received via the second communication interface means. Is transmitted.

  According to the present invention, it is possible to provide a data transmitting device, a data requesting device, and a data reproduction system capable of specifying a device that is a partner of data transmission / reception even when a plurality of devices having similar functions are connected to the same network. Can do.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings. In this embodiment, in a data reproduction system in which a data requesting device that requests data transmission and a data transmitting device that transmits data in response to a data transmission request are housed in the same housing and connected via a network, By connecting the requesting device and the data transmitting device through a different interface from the network, it is possible to identify the device that is the partner of data transmission / reception.

  FIG. 1 is a diagram showing the configuration of the data reproduction system of this embodiment. Referring to FIG. 1, a data reproduction system 10 of this embodiment includes a data requesting device 20, a data transmitting device 30, a hub 40 and a power supply device 50, and is connected to a network 60. Specifically, the data reproduction system 10 is connected to a television broadcast receiver (not shown), and can record a television program in a recording means (not shown), and input means such as a keyboard and a mouse (not shown). An output unit such as a liquid crystal display device (not shown), which is operated by the user to designate reproduction of a desired program from programs recorded in the data transmission device 30 and to display the data requesting device 20 on the network. It can be configured by connecting and storing it in one housing.

  The data request device 20 includes a network interface 21, a communication interface 22, an ID acquisition unit 23, and a data request unit 24. The data requesting device 20 makes a data request to the data transmitting device 30 via the network interface 21 in response to a user operation being input to an input means such as a keyboard or a mouse (not shown).

  The network interface 21 is used by the data requesting device 20 to make a data request via the network and receive data. Specifically, a physical structure necessary for connecting the data requesting device 20 to a network, for example, a cable connector in a wired LAN, an RF circuit or an antenna in a wireless LAN, and the like is used inside the data requesting device 20. It consists of a dedicated integrated circuit for converting between data and a format suitable for network communication, and a microprocessor that executes predetermined software.

  The communication interface 22 is used for transmitting and receiving an ID between the data requesting device 20 and the data transmitting device 30. Specifically, like the network interface 21, it is configured by a dedicated integrated circuit that performs physical structure and data format conversion, and a microprocessor that executes predetermined software, for example, an RS-232C serial interface, a universal serial bus, An I2C bus or the like is applicable, but is not limited thereto.

  The ID acquisition means 23 requests the data transmission device 30 to transmit a device ID, which will be described later, via the communication interface 22, and acquires and stores the device ID via the communication interface 22. Specifically, the ID acquisition unit 23 can be configured by a dedicated integrated circuit or a microprocessor that executes predetermined software.

  The data request unit 24 transmits the device ID stored by the ID acquisition unit 23 to the data transmission device 30 via the network interface 21 and requests transmission of predetermined data. Specifically, the data request unit 24 can be configured by a microprocessor that executes predetermined software. Here, the data request unit 24 may be configured to receive data from the data transmission device 30 via the network interface 21.

  Next, the data transmission device 30 includes a network interface 31, a communication interface 32, an ID storage unit 33, a request reception unit 34, an ID collation unit 35, a data storage unit 36, and a data transmission unit 37. The data transmitting device 30 transmits the requested data in response to the data request from the data requesting device 20.

  Since the network interface 31 and the communication interface 32 are the same as the network interface 21 and the communication interface 22 in the data requesting device 20, description thereof will be omitted.

  The ID storage means 33 stores a device ID assigned to the data transmission device 30 so that the data transmission device 30 can be identified. When receiving a device ID transmission request from the data requesting device 20 via the communication interface 32, the ID storage means 33 Device ID is transmitted. Specifically, the ID storage means 33 can be configured by a dedicated integrated circuit or a microprocessor that executes predetermined software.

  The request receiving unit 34 receives a data transmission request via the network interface 31. Specifically, the request receiving unit 34 can be configured by a dedicated integrated circuit or a microprocessor that executes predetermined software.

  The ID collating unit 35 collates whether the device ID transmitted by the data requesting device 20 and received by the request receiving unit 34 matches the device ID stored in the ID storage unit 33. Specifically, the ID collating means 35 can be configured by a dedicated integrated circuit or a microprocessor that executes predetermined software.

  The data storage means 36 stores data to be transmitted by the data transmission device 30 in response to the data transmission request of the data requesting device 20. Specifically, the data storage means 36 can be configured by a nonvolatile storage device such as a hard disk drive device or a flash memory device. In addition, a configuration may be adopted in which data is received from another device such as a television tuner, temporarily stored, and transmitted to the data requesting device 20. In this case, a volatile memory such as a dynamic random access memory may be used. It can be configured by a storage device.

  The data transmission unit 37 reads data corresponding to the data transmission request from the data requesting device 20 from the data storage unit 36 and transmits the data via the network interface 31. Specifically, the data transmission device 37 can be configured by a dedicated integrated circuit or a microprocessor that executes predetermined software.

  Next, the hub 40 connects the network interface 21 of the data requesting device 20 and the network interface 31 of the data transmission device 30 to the network 60. Specifically, the hub 40 can be configured by a dedicated integrated circuit or a microprocessor that executes predetermined software. It is also possible to configure the data reproduction system 10 so that the network interface 21 of the data requesting device 20 and the network interface 31 of the data transmitting device 30 are each connected to the network 60 and the hub 40 is not provided.

  Next, the power supply device 50 supplies power necessary for the operation to at least the data requesting device 20 and the data transmitting device 30 in the data reproduction system 10. Thereby, it is possible to easily turn off and restart the data reproduction system 10 collectively. Specifically, the power supply device 50 can be configured by a transformer, a rectifier, a constant voltage circuit, a switching element, or the like.

  Subsequently, the operation of the data reproduction system 10 will be described with reference to FIGS. 2 and 3. FIG. 2 is a diagram illustrating an operation when the data reproduction system 10 according to the present embodiment transmits / receives a device ID, and FIG. 3 illustrates an operation when the data reproduction system 10 according to the present embodiment transmits / receives data. It is a figure to do. The operation of FIG. 2 is performed prior to the operation of FIG. Referring to FIG. 2, the ID acquisition unit 23 requests transmission of a device ID via the communication interface 22 (step S11).

  The ID storage unit 33 that has received the device ID transmission request via the communication interface 32 transmits the device ID via the communication interface 32, and the ID acquisition unit 23 received via the communication interface 22 stores the device ID ( Step S12). At this time, the ID storage means 33 may encrypt the device ID and transmit it.

  Next, with reference to FIG. 3, the operation when the data reproduction system 10 of this embodiment transmits and receives data will be described. First, the data request unit 24 reads the apparatus ID from the ID acquisition unit 23 and transmits it via the network interface 21 (step S21). At this time, the data requesting unit may encrypt and transmit the device ID.

  Subsequently, the ID collation unit 35 that has received the device ID via the network interface 31 determines whether or not the received device ID matches the device ID stored in the ID storage unit 33 (step S22). . If the device ID is encrypted in step S21, the ID collation means 35 performs decryption.

  If it is determined in step S22 that the device IDs match, the ID collating unit 35 transmits the authentication result via the network interface 31 (step S23). Subsequently, the data request unit 24 transmits a data transmission request via the network interface 21 (step S24), and the data transmission unit 37 reads the requested data from the data storage unit 36 and transmits it via the network interface 31. .

  If it is determined in step S22 that the device IDs do not match, the process ends without any operation, but the ID collation means 35 may transmit an error message via the network interface 32.

  The authentication by the device ID may be performed for each data transmission request, or may be performed only when the data transmission device 30 requests by configuring the data transmission device 30 to hold the authenticated result. . If comprised in this way, it can respond to various conditions calculated | required by the data reproduction system. For example, at home video data playback, it can be configured to wire the speed of processing faster than strict authentication to extend the validity period of the authentication result and to authenticate for every data request in confidential data playback at the enterprise. . The device ID may be configured to be transmitted simultaneously with the data request.

  In this embodiment, the data requesting device 20 requests the device ID of the data transmitting device 30, but the data transmitting device may request the device ID of the data requesting device 20. In this case, the data requesting device 20 transmits a data transmission request together with the device ID, and the data transmitting device 30 collates with the device ID of the data requesting device 20 received via the communication interface 32 in advance, thereby Aim can be achieved.

  In addition, the device ID included in the data request does not necessarily have to be checked for each data request. Once the match is confirmed by checking once, the verification is not performed until the predetermined number of requests or the predetermined time elapses. The data transmission device 30 may be operated. At this time, when transmitting a data transmission request that is not verified, the data requesting device 20 can be operated so as not to transmit the device ID together with the data transmission request.

It is a figure which shows the structure of the data reproduction system of this embodiment. It is a figure explaining operation | movement when the data reproduction system of this embodiment transmits / receives apparatus ID. It is a figure explaining operation | movement when the data reproduction system of this embodiment transmits / receives data.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Data reproduction system 20 Data request | requirement apparatus 21 Network interface 22 Communication interface 23 ID acquisition means 24 Data request means 30 Data transmission apparatus 31 Network interface 32 Communication interface 33 ID memory | storage means 34 Request reception means 35 ID collation means 36 Data transmission means 37 Data Storage means

Claims (7)

A data transmitting device connected to a network and transmitting data to the network in response to a data request from a data requesting device connected to the network,
A data transmitting apparatus, wherein the data transmitting apparatus is housed in a common housing with the data requesting apparatus and connected to the data requesting apparatus through an interface different from the network. Having an identifier for identifying the data transmitting device;
The data transmission device according to claim 1, wherein the identifier is transmitted to the data requesting device via the interface.   3. The data according to claim 2, wherein the data is transmitted in response to the data request transmitted from the data requesting apparatus that transmitted the identifier received via the interface via the network. Transmitter device. Data storage means for storing data;
First communication interface means for connecting to a network;
Second communication interface means different from the first communication interface means;
Identifier storage means for storing a predetermined identifier;
Identifier transmitting means for transmitting the identifier via the second communication interface means;
An identifier verification unit that receives the identifier via the first communication interface unit and determines a match with the predetermined identifier stored in the identifier storage unit;
A data transmission apparatus comprising: a data transmission unit configured to transmit the data via the first communication interface unit when the identifier collation unit determines that they match. A data requesting device connected to a network and requesting a data transmission device connected to the network to transmit data to the network,
A data requesting device, wherein the data requesting device is housed in a common housing with the data transmitting device and is connected to the data transmitting device via an interface different from the network. Data storage means for storing data, first communication interface means for connecting to a network, second communication interface means different from the first communication interface means, and identifier storage means for storing a predetermined identifier A data transmission device having
Data request means for sending a data transmission request for requesting transmission of data, third communication interface means for connecting to the network, and fourth communication interface means different from the third communication interface means Having the data requesting device in the same housing,
The first communication interface means and the third communication interface means, and the second communication interface means and the fourth communication interface means are connected to be able to communicate with each other,
The data transmitting device transmits the identifier to the data requesting device via the second communication interface means;
The data requesting device transmits the identifier to the data transmitting device via the third communication interface means;
The data transmission device transmits the requested data when the identifier received via the first communication interface means matches a predetermined identifier stored in the identifier storage means. A data reproduction system. A data transmission device comprising: data storage means for storing data; first communication interface means for connecting to a network; and second communication interface means different from the first communication interface means;
Data request means for transmitting a data transmission request for requesting transmission of data, third communication interface means for connecting to the network, and fourth communication interface means different from the third communication interface means; A data requesting device having an identifier storage means for storing a predetermined identifier in the same housing;
The first communication interface means and the third communication interface means, and the second communication interface means and the fourth communication interface means are connected to be able to communicate with each other,
The data requesting device transmits the identifier to the data transmitting device via the fourth communication interface means;
The data requesting device transmits a predetermined identifier stored in the identifier storing unit and the data transmission request to the data transmitting device via the third communication interface unit,
The data transmitting device receives the requested data when the predetermined identifier received via the first communication interface means matches the identifier received via the second communication interface means. A data reproduction system characterized by transmitting.

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