JP2011120007A - Data recording apparatus, and method of reproducing data from the data recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data recording apparatus configured to provide a search means and reproduce data selected by a user on the basis of the DLNA standards, and a method of reproducing the data from the data recording apparatus. <P>SOLUTION: The data recording apparatus includes a recording medium, a content management section for managing recorded data, and a communication control section for controlling network communication. The data recording apparatus includes a WEB server section for displaying information about recorded data on the data reproducing apparatus, and a DLNA control section for controlling data reproduction based on the DLNA standards. A WEB/DLNA control section is further provided for performing control to transmit the recorded data to an external device based on the DLNA standards on the basis of information transmitted from the WEB server section. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a data recording apparatus and a data reproducing method from the data recording apparatus, and more particularly to a data recording apparatus having a good user interface when used while connected to a network, and a data reproducing method from the data recording apparatus. is there.

  Conventionally, many recording devices called NAS (Network Attached Storage) have been commercialized as data recording devices used by connecting to a network. In some NAS, a WEB server function is installed in order to be able to make its own settings from an Internet browser. In addition, there is a Digital Living Network Alliance (DLNA) as a standard for mutual use of content such as photos, music, and videos on a home network, and NAS that adopts this DLNA standard has also been commercialized, and between devices that support the DLNA standard Data reproduction is realized with this. Further, as a technique for realizing data reproduction between a DLNA-incompatible device and a DLNA-compatible device, for example, Japanese Patent Application Laid-Open No. 2009-118112 accesses a DLNA-compatible media server from a DLNA-incompatible device. Technology is disclosed.

JP 2009-118112 A

  In the conventional data reproduction between DLNA-compatible devices, the user searches and reproduces the data recorded in the data recording device by the search means provided by the data reproduction device. For this reason, the retrieval means depends on the data reproducing device, and particularly in AV (Audio Visual) equipment, the processing performance is inferior to that of PC (Personal Computer), so the retrieval means is limited and the performance of retrieving a large amount of data is low. There were some inconveniences such as inferiority and limited search functions that could be used. Conversely, even if the data recording device provides a search means, a method for reproducing the data selected from the search result by the user via the network based on the DLNA standard has not been established. It was difficult to reproduce good data.

  Therefore, the present invention provides a data recording apparatus having a good user interface by providing a search function in data reproduction between DLNA compatible devices, for example, and enabling reproduction of data selected by the user based on the DLNA standard. It is an object of the present invention to provide a recording apparatus and a method for reproducing data from the data recording apparatus.

  In order to solve the above-described problems, the present invention provides a data recording apparatus that transmits and receives data to and from an external device via a network, the recording medium storing the recording data of the data recording apparatus, and the recording medium recorded on the recording medium A content management unit that manages recorded data and generates content information related to the recorded data, a communication control unit that transmits and receives the content information and recorded data recorded on the recording medium to and from the network, and the external device Based on a transmission / reception standard for sharing the recording data, a transmission / reception standard control unit that performs data transmission / reception with the external device via the communication control unit and the network, and the external device via the network and the communication control unit Data received from the receiver is converted into a format used by the transmission / reception standard control unit, and the transmission / reception regulation is converted. A WEB / transmission / reception standard conversion unit that supplies the content information from the content management unit and converts the content information to generate a file for transmission, and the WEB / transmission / standard conversion unit It has a WEB server part which transmits the file for transmission to the external apparatus via the communication control part and the network, and supplies data received from the external apparatus to the WEB / transmission / reception standard conversion part. Yes.

  The present invention also provides a data reproduction method from a data recording apparatus for reproducing recorded data recorded in a data recording apparatus connected to a network by means of the data reproducing apparatus connected to the network, wherein the data A request receiving step for receiving from the data reproducing device a request for transmitting content information relating to the recording data for managing the recording data recorded in the recording device, and the request receiving step transmits content information relating to the recording data A content information file conversion and transmission step of converting the content information upon receiving a request to generate a content information file for transmission and transmitting the content information file to the data reproduction device; and the content transmitted in the content information file conversion and transmission step Select the data playback device according to the information file. A content reproduction / transmission step of transmitting the recorded data to the data reproduction device, wherein the content reproduction / transmission step reproduces the selected recording data and transmits it to the data reproduction device based on a predetermined data transmission / reception standard It is characterized by doing.

According to the present invention, a data recording apparatus having a good user interface and a data reproducing method from the data recording apparatus can be realized, and there is an effect that it is possible to contribute to improvement of usability for the user.
For example, as shown below, in one embodiment, the data recording device provides a search function, and the data selected by the user can be played back based on the DLNA standard, and the data recording device has a good user interface. There is an effect that it is possible to provide a method of reproducing data from an apparatus.

1 is a block diagram of a data recording apparatus according to an embodiment of the present invention. It is a flowchart which shows the process of the data recording device and data reproduction apparatus which concern on one Example of this invention. It is a flowchart which shows the process of the data recording device based on one Example of this invention. It is a figure which shows an example of the data reproduction method in DLNA specification. It is another flowchart which shows the process of the data recording device and data reproduction apparatus which concern on one Example of this invention. It is another flowchart which shows the process of the data recording device based on one Example of this invention. It is a figure which illustrates the screen displayed on the display part of the data reproduction apparatus which concerns on one Example of this invention. 1 is a block diagram of a data reproducing apparatus according to an embodiment of the present invention.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of a data recording apparatus 100 according to an embodiment of the present invention. In FIG. 1, reference numeral 100 denotes a data recording apparatus (hereinafter also referred to as a server). Reference numeral 101 denotes a system control unit that controls the operation of each unit described below. A memory 102 stores information used by each unit. An HDD control unit 103 controls an HDD (Hard Disk Drive) 104 that is a first recording medium of the data recording apparatus 100. An optical disk control unit 105 controls the optical disk 106 that is the second recording medium of the data recording apparatus 100.

  Reference numeral 107 denotes a communication control unit. The data recording apparatus 100 is connected to a network 109 via a communication I / F (interface) 108, and communicates when data is transmitted / received to / from an external apparatus such as the data reproducing apparatus 190. Control. Here, three data reproduction apparatuses 190 (hereinafter also referred to as external apparatuses or clients) are connected via a network 109, 190A, 190B, and 190C. This is an example, and any number of units may be used, or only one unit may be used. Hereinafter, when any one of them is taken as an example, it will be referred to as a data reproducing device 190, for example.

  A content management unit 110 is content information related to data recorded on the HDD 104 and the optical disc 106, such as moving image / still image / audio data, such as file name, recording date / time, data type, data format, and file size. Manage etc. A DLNA control unit 120 controls communication based on DLNA / UPnP (Universal Plug and Play) which is a standard for mutual use of digital contents between devices connected to the network 109. The DLNA control unit 120 includes a DMS control unit 121 that performs control as a DMS (Digital Media Server) defined by DLNA, and a DMC control unit 122 that performs control as a DMC (Digital Media Controller).

  Reference numeral 130 denotes a WEB server unit that generates a file such as an HTML (Hyper Text Markup Language) file in a format in which content information managed by the content management unit 110 can be displayed by a WEB browser together with a WEB / DLNA conversion unit described later. In addition, the HTML file is transmitted via the communication control unit 107 in response to a request from the external device 190 connected to the network, and a response or instruction from the external device 190 is received. Reference numeral 140 denotes a WEB / DLNA conversion unit that generates an HTML file as described above, converts the information received by the WEB server 130 into a format that can be processed by the DLNA control unit 120, and sends it to the DLNA control unit 120. Transmit and give instructions for operation. In the present embodiment, there are two recording media, but the type and number of recording media are not limited to this.

Next, a method for causing the data recording apparatus 100 to display the content information on the data reproducing apparatus 190 connected to the network will be described.
First, the data reproducing apparatus 190 will be described with reference to FIG. FIG. 8 is a block diagram of a data reproducing apparatus according to an embodiment of the present invention. The data reproduction device 190 has a communication control unit 191, a WEB browser unit 192, a DMR (Digital Media Renderer) function and a DMP (Digital Media Player) function in the DLNA that can be connected to the previous network 109 via the communication I / F 198. It includes a DLNA control unit 193 including a DMR / DMP control unit 194 to be controlled, a decoder unit 195 for releasing data compression applied to content data received from the network, a display unit 196, and a user I / F unit 197.

  In addition, the data reproduction device 190 displays a file transmitted from the data recording device 100 by the action of the WEB browser unit 192, for example, an HTML file on the display unit 196, and from the user I / F unit 197 via the file. For example, the next operation instruction from the user by a keyboard or remote control operation can be transmitted to the server 100. Further, when the user selects content data based on the HTML file displayed on the display unit 196 using the user I / F unit 197 and gives a reproduction instruction, the data recording apparatus connected to the network 109 is selected. It is possible to transmit digital data such as moving images, still images, audio data, etc. from the data recording apparatus 100, decompress and reproduce the data in the decoder unit 195, and display the data on the display unit 196. is there. Reference numeral 199A denotes a memory which stores information used by each unit. Reference numeral 199B denotes a system control unit which controls the operation of each unit.

  Note that the DMR / DMP control unit 194 of the data reproduction device performs DMP control defined in the DLNA standard when data is transmitted to and received from the DMS control unit 121 of the data recording device 100. The DMR / DMP control unit 194 of the data reproducing apparatus performs DMR control defined in the DLNA standard when the DMC control unit of the data recording apparatus 100 controls both the DMS control unit and the data reproducing apparatus 190.

  FIG. 2 is a flowchart showing processing of the data recording apparatus 100 and the data reproducing apparatus 190 according to an embodiment of the present invention. In FIG. 2, for convenience, the data recording device 100 is referred to as a server, and the external device 190 is referred to as a client. These terms are also used in the following description. Hereinafter, the flow will be described in the order of steps shown in parentheses.

  In FIG. 2, the server that is the data recording device 100 waits for a transmission instruction of a file that can be displayed on the WEB browser unit 192, for example, an HTML file, from a client that is the data reproducing device 190 (S210). Hereinafter, a case where an HTML file is transmitted for convenience will be described as an example. The user operates the client 190 using the user I / F unit 197 and controls the client 190 to activate the WEB browser unit 192 (S220). The client 190 receives an instruction from the user, activates the WEB browser unit 192 (S221), requests the server 100 to transmit the HTML file (S222), and enters a waiting state for receiving the HTML file. (S223). The server 100 waiting for a transmission instruction from the client 190 receives the file transmission request (S211), and creates an HTML file including content information managed by the content management unit 110 (S212). A method for creating the HTML file will be described later.

After the creation of the HTML file is completed, the server 100 transmits the HTML file to the client 190 (S213) and waits for reception of the next operation instruction (S214). When the client 190 receives the HTML file (S224), the client 190 displays the HTML file on the display unit 196 via the WEB browser unit 192 (S225).
By the method described above, the user can display the data recorded in the data recording device 100 on the WEB browser unit 192 of the data reproducing device 190, and the data recorded in the data recording device 100 can be displayed. Can be recognized.

Next, a method for creating an HTML file including content information managed by the content management unit 110 in response to an HTML file transmission request received by the data recording device 100 from the data reproducing device 190 will be described.
FIG. 3 is a flowchart showing processing of the data recording apparatus 100 according to an embodiment of the present invention. In FIG. 3, when the data recording device 100 receives an HTML file transmission request from the data reproduction device 190 (S300, corresponding to S211 in FIG. 2), the WEB / DLNA conversion unit 140 receives from the content management unit 110. The content information is acquired (S310), the content information is converted into a format that can be described in an HTML file (S320), and the HTML file is created (S330). After the WEB / DLNA conversion unit 140 creates the HTML file, the WEB / DLNA conversion unit 140 transmits the HTML file to the WEB server unit 130, and the WEB server unit 130 transmits the received HTML file to the data reproduction device 190. The data is transmitted via 107 (S340).

  Here, the content information described in the HTML file is information related to the recording data recorded by the data recording device 100, and information that can be visually recognized by the user includes the file name, file size, There is information such as the recording date and time, for example, the data type indicating whether the recording data belongs to a moving image, a still image, audio, etc., for example, if the recording data is image data such as a moving image or a still image, a reduced image of the representative image, etc. Information that is not visually recognized by the user includes information on a storage folder indicating where the recording data is stored on the recording medium, information on a folder in which the representative image is stored, and the like.

  By the method described above, an HTML file to be displayed on the data reproducing device 190 is created, and the user can view information related to data stored in the data recording device 100 by viewing the HTML file. It becomes possible. The present embodiment is characterized in that the recording apparatus 100 creates an HTML file related to the content information and transmits it to the data reproduction apparatus 190 in response to a request from the data reproduction apparatus 190. As a result, there is an effect that the user interface can be improved as compared with the case where the function for content search depends on the data reproducing device 190 as in the prior art. Conventionally, for example, the data reproduction device 190 displays information related to the content stored in the data recording device 100 only by text information, or classifies and displays only by data type such as moving image / still image / audio, etc. The search method was not taken into consideration. In this embodiment, based on the HTML file provided by the data recording device 100, the data reproducing device 190 displays the content information with the reduced image, classifies the content information in more detail, and displays the content information. The content information can be displayed on a user interface that the user wants to provide. In addition, from this display, it is possible to select a content to be played back and to easily transmit it to the data recording apparatus 100, so that a user-friendly content search can be performed.

Next, a method for selecting recorded data (contents) to be viewed by the user based on the information displayed in the HTML file and reproducing it by the data reproducing device 190 will be described.
FIG. 4 is a diagram illustrating an example of a data reproduction method according to the DLNA standard. In DLNA, devices connected to a network are defined by the concepts of DMS, DMC, DMR, and DMP. As described above, when control is performed with DMC as the center, processing is performed by DMC, DMS, and DMR. FIG. 4 shows a processing flow at the time of data reproduction by the DMS, the DMC, and the DMR.

  The DMC acquires content information related to recording data recorded by the DMS, transmits it to the DMR, displays it on the display device 196, and allows the user to select data to be played back. (S410). After the user selects the recording data, the DMC transmits information on the selected recording data and an instruction to connect to the DMS if the selected recording data is reproducible (S420). ). The DMR determines whether or not the selected recording data is reproducible based on the acquired information on the recording data, and if it is reproducible, requests the DMS to transmit the recording data ( S430). The DMS transmits the selected recording data to the DMR according to the received request from the DMR (S440). The DMR reproduces the received recording data and displays it on its display device 196. With the method described above, a mechanism is provided so that the recorded data selected by the user can be reproduced.

  Next, a method for displaying the information related to the recording data recorded by the data recording apparatus 100 by the above-described method, selecting the recording data that the user wants to view, and reproducing the selected recording data will be described. FIG. 5 is another flowchart showing the processing of the data recording apparatus 100 and the data reproducing apparatus 190 according to an embodiment of the present invention. Also in FIG. 5, the data recording device 100 is referred to as a server, and the data reproducing device 190 is referred to as a client. Hereinafter, the terms server and client will be used for convenience.

  In FIG. 5, the server 100 waits to receive an operation instruction from the client 190 after transmitting the HTML file to the client 190 by the method described above in step S340 of FIG. 3 (S511). . When the recording data by the user is selected (S521), the client 190 notifies the server 100 as data for reproducing the selected recording data (S522). When the server 100 receives the information on the reproduction data, the WEB / DLNA conversion unit 140 converts the information on the reproduction data into a format that can be interpreted by the DLNA control unit 120, and issues a reproduction start instruction to the DLNA control unit 120. Transmit (S512), and send an instruction to the client 190 to terminate the WEB browser 192 (S513).

  The DMC control unit 122 in the DLNA control unit 120 receives information related to the reproduction data received from the WEB / DLNA conversion unit 140 and the reproduction start instruction, and sends information related to the reproduction data to the client 190 corresponding to the DLNA. And a reproduction start instruction is transmitted (S514), and the reproduction data transmission instruction from the client 190 is awaited (S515). The client 190 terminates the WEB browser 192 according to the WEB browser termination instruction transmitted from the server 100 (S523). Further, when the DLNA reproduction start instruction from the server 100 in S514 is received (S524), the received information on the reproduction data is interpreted, and a transmission request for the reproduction data is transmitted to the server 100 (S525).

  Upon receiving the reproduction data transmission request from the client 190 (S516), the server 100 controls the DMS control unit 121 in the DLNA control unit 120 and transmits the reproduction data to the client 190 (S517). When receiving the reproduction data transmitted from the server 100, the client 190, which has been waiting to receive the reproduction data (S526), displays the reproduction data on its own display device 196 (S527).

The recording data selected by the user can be displayed on the data reproducing device 190 by the method described above. In the embodiment of the present invention, the data recording device 100 plays the role of the DMS and the DMC, and the data playback device 190 plays the role of the DMR, thereby realizing the playback of the recorded data. In FIG. 5, the steps (S514 to S517, S524 to S527) surrounded by a broken line correspond to the data reproduction method in DLNA shown in FIG.
According to the method described above, the recording data recorded by the data recording apparatus 100 can be selected via the WEB browser unit 192 of the data reproducing apparatus 190 and reproduced based on DLNA.

  FIG. 6 is another flowchart showing the processing of the data recording apparatus 100 according to an embodiment of the present invention, and shows in detail S511 to S515 in FIG. In FIG. 6, the data recording apparatus 100 waits to receive an operation instruction from the data reproduction apparatus 190 after transmitting the HTML file to the data reproduction apparatus 190 by the method described above (S600). When the WEB server unit 130 in the data recording device 100 receives an operation instruction from the data reproduction device 190 via the communication control unit 107 (S601), the received information is transmitted to the WEB / DLNA conversion unit 140. To do.

  The WEB / DLNA conversion unit 140 determines whether or not the instruction is a reproduction start request (S602). If the instruction is a reproduction start request (YES in the figure), the WEB / DLNA conversion unit 140 determines that the data The WEB server unit 130 is controlled to end the WEB browser 192 of the playback device 190, and the WEB browser 192 of the data playback device 190 is ended (S603).

  Further, the WEB / DLNA conversion unit 140 converts the information related to the recording data for which the reproduction start instruction has been given into a format that can be interpreted by the DLNA control unit 120 (S604), and transmits the information to the DLNA control unit 120. The DMC control unit 122 in the DLNA control unit 120 is controlled to reproduce the video in a format based on DLNA (S605). The DLNA control unit 120 and the DMC control unit 122 send an instruction to the data reproduction device 190 via the communication control unit 107 and the network 109 to start reproduction of the selected recording data, and the data reproduction device 190. Waits for a data transmission request to be transmitted (S606).

On the other hand, when the operation instruction received in S601 is not a reproduction start request (NO in the figure), the WEB / DLNA control unit 140 performs an operation designated by the received operation instruction (S610), and includes an operation result. An HTML file is created and transmitted to the data reproducing device 190 (S611), and the next operation instruction is awaited (S612).
By the method described above, an instruction transmitted from the data reproducing apparatus is determined. When the instruction is a reproduction start request, reproduction can be started in a format based on DLNA.

Next, an example of a screen when the HTML file created by the data recording apparatus 100 is displayed on the display unit 196 of the data reproducing apparatus 190 is shown.
FIG. 7 is a diagram illustrating a screen displayed on the display unit 196 of the data reproducing apparatus 190 according to an embodiment of the present invention. In FIG. 7, reference numeral 700 denotes a display frame of the display device, and reference numeral 701 denotes an address for accessing the data recording device 100 from the data reproducing device 190. A reduced image display area 702 is displayed when the recording data is image data, and may be used as an area for displaying an icon indicating the data type. Reference numeral 703 denotes information of the recording data, for example, recording date / time and file name. In this embodiment, four pieces of data are displayed as the recording data.

Reference numeral 704 denotes a cursor for selecting data to be reproduced by the user. 705A to 705C display functions that can be operated in addition to the reproduction of the recorded data as buttons on the screen. In this embodiment, the functions for searching, sorting, and classifying the recorded data are realized. The button is displayed. The user can change the data to be reproduced by moving the cursor, and after determining the data to be reproduced, the data reproducing apparatus transmits information on the determined data to the data recording apparatus 100. Then, the recorded data is reproduced by the method described above.
In DLNA, a means for retrieving data to be reproduced is generally installed in the data reproduction apparatus 190, and it is defined that data selected by this means is reproduced. Reference is made to reproduction of data selected by other means. It has not been.

  In the field of PC, data can be played back on the WEB browser by loading a playback function on the WEB browser mounted on the PC or calling an application having a playback function from the WEB browser. However, in the AV field, a WEB browser may not have a playback function, and there is often no mechanism for transferring playback data to the playback function of the data playback device 190. On the other hand, in this embodiment, the data reproducing apparatus 190 has a DLNA control unit 193, and the recording data selected by the WEB browser unit 192 of the data reproducing apparatus 190 is transferred to the data recording apparatus 100. There is one feature in performing transmission and reception based on the standard.

  As described above, in the data recording apparatus and the data reproducing method from the data recording apparatus according to the present invention, the content information related to the recording data recorded in the data recording apparatus 100 is transmitted via the WEB browser unit 192 of the data reproducing apparatus 190. Displayed on the display device 196 of the data reproduction device 190, search and selection of the recorded data is performed by the WEB browser unit 192 of the data reproduction device 190, and here, information on the recording data selected by the user is defined by DLNA. The data reproduction is performed based on DLNA. As a result, the search function prepared by the data recording apparatus 100 can be provided to the data reproducing apparatus 190 in which the WEB browser unit 192 is mounted, and data can be reproduced by a method based on the DLNA standard after selecting the reproduction data. Furthermore, since a search function can be provided in common with the data playback apparatus 190 equipped with the WEB browser unit 192, an easy-to-use search function can be provided without depending on the data playback apparatus 190, and based on a playback method corresponding to DLNA. The recorded data can be reproduced without special conversion means. Thereby, there is an effect that it is possible to provide a data recording apparatus having a good user interface that is easy to use and a data reproducing method from the data recording apparatus.

  The embodiment of the present invention has been described above. However, this is merely an example, and other modified examples can be considered in the circuit block diagram and the flowchart. Either case is within the scope of the present invention.

  DESCRIPTION OF SYMBOLS 100: Data recording apparatus, 101: System control part, 102: Memory, 103: HDD control part, 104: HDD, 105: Optical disk control part, 106: Optical disk, 107: Communication control part, 110: Content management part, 120, 193: DLNA control unit, 121: DMS control unit, 122: DMC control unit, 194: DMR control unit, 130, 192: WEB server unit, 140, 195: WEB / DLNA conversion unit, 196: display unit, 197: user I / F.

Claims (8)

A data recording device that transmits and receives data to and from an external device via a network,
A recording medium for storing recording data of the data recording device;
A content management unit that manages recording data recorded on the recording medium and generates content information related to the recording data;
A communication control unit for transmitting and receiving the content information and recording data recorded on the recording medium to the network;
Based on a transmission / reception standard for sharing the recording data with the external device, a transmission / reception standard control unit for performing data transmission / reception with the external device via the communication control unit and the network,
Data received from the external device via the network and the communication control unit is supplied, the data is converted into a format used by the transmission / reception standard control unit, supplied to the transmission / reception standard control unit, and from the content management unit A WEB / transmission / reception standard conversion unit that is supplied with the content information and converts the content information to generate a file for transmission;
The transmission file generated by the WEB / transmission standard conversion unit is transmitted to the external device via the communication control unit and the network, and the data received from the external device is supplied to the WEB / transmission standard conversion unit. A data recording apparatus comprising: a WEB server unit that performs The data recording device according to claim 1,
The transmission / reception standard control unit selects the recording data according to the data received from the external device supplied from the WEB / transmission / reception standard conversion unit, and selects the selected recording data based on the transmission / reception standard. The data recording apparatus transmits the data to the external device via the communication control unit and the network. The data recording apparatus according to claim 1 or 2,
The data recording apparatus according to claim 1, wherein the transmission / reception standard is a DLNA / UPnP standard. The data recording device according to claim 3, wherein
The transmission / reception standard control unit includes a DMS control unit that performs DMS control in the DLNA / UPnP standard, and a DMC control unit that performs DMC control,
The DMC control unit controls the WEB server unit to transmit the recording data to the external device based on the data received from the external device and converted by the WEB / transmission / reception standard conversion unit. Data recording device.   The data recording apparatus according to claim 1, wherein the transmission file generated by the WEB / transmission / reception standard conversion unit is an HTML file. A method for reproducing data from a data recording apparatus for reproducing recorded data recorded in a data recording apparatus connected to a network with a data reproducing apparatus connected to the network,
A request receiving step for receiving, from the data reproducing device, a request for transmitting content information relating to the recorded data for managing the recorded data recorded in the data recording device;
Content information file conversion and transmission step of converting the content information to generate a content information file for transmission when the request reception step receives a request to transmit content information related to the recording data, and transmitting the content information file to the data reproduction device When,
A content reproduction / transmission step of transmitting recording data selected by the data reproduction device according to the content information file transmitted in the content information file conversion / transmission step to the data reproduction device;
In the content reproduction / transmission step, the selected recording data is reproduced and transmitted to the data reproduction device based on a predetermined data transmission / reception standard. A method for reproducing data from a data recording device according to claim 6,
The predetermined data transmission / reception standard in the reproduction information conversion step is a DLNA / UPnP standard,
A method of reproducing data from a data recording apparatus, wherein the selected recording data is reproduced from the data recording apparatus based on DMC or DMS in the DLNA / UPnP standard.   7. The data reproducing method from the data recording device according to claim 6, wherein the content information file for transmission generated in the content information file converting and transmitting step is an HTML file. Data playback method.

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