JP2012014774A - Data transmission apparatus and network copy system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data transmission apparatus that enables a user to easily copy digital content to a recording medium via a network.SOLUTION: A data transmission apparatus includes a media information creating module and a recording control module. The media information creating module creates, with a plug-and-play function upon a media recording device being connected, media information based on the type and capacity of a recording medium on which the preset media recording device can record data, and transmits the media information created to the device. When a recording medium selected as an uploading destination from the device has a remaining capacity insufficient for recording digital content, the recording control module outputs a message that instructs the user to set the recording medium in the media recording device.

Description

  Embodiments described herein relate generally to a data transmission apparatus and a network copy system.

  For example, when dubbing such as copying or moving the content digitally recorded on a device having a recording function (this is referred to as digital content) to another device, using UPnP or DLNA technology, the content is saved on the transmitting device. The digital content thus recorded can be written to a recording medium set in a content recording / reproducing apparatus (this is called a media drive) mounted on or connected to a receiving device via a network.

  When performing such dubbing of digital content, the user usually needs to confirm in advance the capacity of the recording medium inserted in the media drive of the receiving device.

JP 2002-157824 A

  Currently, there are various types of recording media such as CD, DVD, Blu-ray (BD), among which various types such as + R, -R, -R DL, -RW, -RE, -RE DL, etc. There are various types. The media drive side also supports the recording / playback methods for the various recording media described above, and the user must fully understand the standard, type, and capacity of the digital content and recording media to be dubbed (copied). There is a problem that the digital content cannot be easily copied without some knowledge of the recording medium.

  An object of the present invention is to provide a data transmission apparatus and a network copy system that allow a user to easily copy a digital content to a recording medium via a network.

  The data transmission apparatus according to the embodiment is connected to a transmission-side device in which digital content is stored via a network, receives the digital content from the device via the network, and is mounted on or connected to the device. Copy to a recording medium that can be inserted into and removed from the media recording device. This data transmission apparatus includes a media information creation module and a recording control module. The media information creation module creates media information from a preset type and capacity of the recording medium on which the media recording device can record data by a plug-and-play function when the media recording device is connected. Then, the created media information is transmitted to the device. If the recording control module selects the recording medium selected as the upload destination from the device is insufficient for recording the digital content or if the recording medium is not set, the recording medium is stored in the recording medium. A message is output to be set in the media recording device, and the received digital content is recorded on the recording medium set in the media recording device.

1 is a diagram illustrating a schematic configuration of a network copy system according to an embodiment. It is a figure which shows the structure of a network copy system. It is a figure which shows an example of a corresponding removable media information table. It is a figure which shows an example of removable media writable free space information. It is a figure which shows an example of removable media overwrite writable capacity information. It is a figure which shows an example of a container. It is a figure which shows an example of an upload destination selection screen. It is an example of the sequence of the upload process performed by exchanging a command between UPC and DMS via a network. It is a flowchart which shows the preparation operation | movement of the upload reception process in DMS. It is a flowchart in which a control module performs different operation | movement according to the kind (standard and type) of a container. It is a figure which shows the other example of a container. It is a figure which shows the other example of a container.

  Hereinafter, embodiments will be described in detail with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of a network copy system according to an embodiment.

As shown in FIG. 1, the network copy system of this embodiment is a first device on the transmission side that transmits digital content (hereinafter referred to as “content”), that is, an upload controller 1 (hereinafter referred to as “first data transmission device”). UPC1 ”) and a digital media server 2 (hereinafter referred to as“ DMS2 ”) as a second data transmission device as a second device on the receiving side that receives content are connected via a network 3 such as a LAN. Is.
This network copy system copies content from a UPC 1 to a recording medium set so as to be detachable in a removable media drive 19 as a media recording device mounted or connected to the DMS 2 via the network 3. Note that dubbing means copying the original content to another recording medium. Also, deleting the original content after copying is called “move”. That is, moving is included in the copy.

  UPC1 and DMS2 exchange requests and responses by UPnP (Universal Plug and Play) function, for example, according to the guidelines of DLNA (Digital Living Network Alliance), and exchange information and share resources between devices in network 3 Do. As for the content dubbing function, either UPC1 or DMS2 may be the transmission side or the reception side, and the dubbing function may have the same configuration. In this example, the configuration of DMS2 is shown as an example in FIG.

  As shown in FIG. 2, the DMS 2 includes a digital tuner 11, a decryption module 12, a decryption module 13, a display device 14, a content management information extraction module 15, a content management information management module 16, an encryption module 17, and a digital interface 18 ( (Hereinafter referred to as “digital IF”), a removable media drive 19, a content management information creation module 20, a hard disk drive 21, a memory 22, an operation unit 26, a control module 27, and the like.

  The digital tuner 11 receives terrestrial digital broadcasting. The decryption module 12 decrypts the digital terrestrial broadcast code received by the digital tuner 11 and sends the program data of the reception channel to the decryption module 13. At the time of recording, program data is sent to the encryption module 17.

  The decryption module 13 demodulates the content of the program from the program data sent from the decryption module 12 and outputs it to the display device 14. The display device 14 displays the content of the program received from the decryption module 13 on the screen.

  In the case of the receiving side (DMS2), the content management information extraction module 15 extracts content management information from the encrypted data (program content data) received from the network 3. In the case of the transmission side (UPC1), a container (content management information) included in the response is extracted.

  The content management information management module 16 stores the content management information extracted by the content management information extraction module 15 (which content is stored in what state and where) in the storage area of the hard disk drive 21 or the memory 22. to manage.

  The encryption module 17 encrypts the content to be saved and stores (records) it in the removable media drive 19 or the hard disk drive 21.

  The digital IF 18 is a communication unit that transmits data to the network 3 or receives data from the network 3, for example.

  The removable media drive 19 is a media recording device built in (mounted on) or connected to the main body of the DMS 2, for example, a Blu-ray multi-drive (hereinafter referred to as “BD drive”), and is a BD, BD-R, BD-RE. In addition to the above, data can be recorded / reproduced on removable recording media (hereinafter referred to as “removable media”) of various standards and types such as DVD and CD. The removable media is set so as to be removable from the tray of the removable media drive 19.

  The content management information creation module 20 creates content management information for managing the received content.

  In the case of the transmission side (UPC 1), the hard disk drive 21 stores the program content encrypted by the encryption module 17 and the like.

  The operation unit 26 is used to select (instruct) the upload destination removable medium from the upload destination selection screen 42 (see FIG. 7) on which the type and storage capacity of the upload destination removable medium are displayed.

  The control module 27 includes a data transmission control module 31, a search module 32, a screen output module 33, an upload module 34, a media information creation module 35, a recording control module 36, and the like.

  The data transmission control module 31 controls data transmission (transmission and reception) to the network 3.

  The search module 32 searches for a device (removable media drive 19) capable of dubbing content by exchanging commands on the network 3, and the detected removable media drive 19 can record data. The media information including the type and capacity is acquired from the searched device.

  The screen output module 33 outputs an upload destination selection screen 42 (see FIG. 7) indicating the upload destination with the type of removable media extracted from the media information acquired by the search module 32 and the remaining recordable capacity.

  The upload module 34 uploads the content stored in the hard disk drive 21 to a desired upload destination selected by the user from the upload destination selection screen 42.

  The media information creation module 35 refers to a table and information set in the memory 22 in advance by a plug and play function when the removable media drive 19 is connected, so that the removable media drive 19 can record data. The type (standard and type) and capacity are read out, media information is created from these information, and the created media information is transmitted to the network 3 (UPC 1 connected to) through the digital IF 18.

  When the remaining capacity of the removable medium selected as the upload destination from the UPC 1 is insufficient for recording the content or when the removable medium is not set, the recording control module 36 stores the medium in the removable media drive 19. A message is output to set, and the received content is recorded on the medium set in the removable media drive 19.

  The memory 22 stores a corresponding removable media capacity information table 23, removable media writable free space information 24, and removable media overwrite writable capacity information 25.

  As shown in FIG. 3, in the corresponding removable media capacity information table 23, the media management data in which the name of the removable medium that the removable media drive 19 supports data writing and reading and the writable capacity of the media are associated with each other. (Media information) is set.

  In this example, when the removable medium is a BD-R, there are two types of writable capacities of 25 Gbytes and 50 Gbytes, and when the removable medium is a BD-RE, there are two types of writable capacities of 25 Gbytes and 50 Gbytes.

  This data is fixed data recorded in advance in a non-volatile storage area such as an HDD when the DMS 2 is manufactured. When the user performs a dubbing operation of the operation unit 26 for dubbing in the DMS 2, the control module 27 Is read from the nonvolatile storage area of the HDD into the memory 22.

  As another method, for example, data is embedded as media information in dubbing software, or the user sets the media information by some means and saves it in a nonvolatile storage area. Alternatively, the media information stored in the non-volatile storage area may be read into the memory 22 by the control module 27 at the time of startup or the like.

  Further, when the dubbing function is activated, the control module 27 may read the media information read from the removable medium by the removable media drive 19 onto the memory 22.

  That is, the corresponding removable media capacity information table 23 is information for managing the capacity of removable media that can be reproduced / recorded by the removable media drive 19.

  As shown in FIG. 4, the removable medium writable free space information 24 is acquired from the removable media drive 19 by the control module 27 and stored in the memory 22. In this example, it is assumed that a removable disk such as a BD-RW is inserted in the removable media drive 19 and the writable capacity is 5 GB. If the removable medium is a BD-RW, the data is added to the medium.

  That is, the removable medium writable free space information 24 is a capacity that can be written without overwriting the removable medium currently inserted in the removable media drive 19 (that is, a new disk is written for a blank disk and a partially written disk is written). Additional information) and information for managing the free space.

  As shown in FIG. 5, the removable medium overwrite writable capacity information 25 is acquired from the removable drive 19 by the control module 27. The removable medium overwrite writable capacity information 25 is information for managing the capacity that can be overwritten when the removable medium currently inserted (set) in the removable media drive 19 can overwrite data.

  In this example, it is assumed that when a removable medium is inserted in the removable media drive 19 in advance and data already written in the removable medium is overwritten, the capacity that can be written in the removable medium is, for example, 25 GB.

  In this state, when the DMS 2 receives an upload request from the UPC 1, the DMS 2 creates a container 41 as shown in FIG. 6 for the UPC 1 and returns a response including the created container 41 to the UPC 1.

  As shown in FIG. 6, the container 41 is a table in which the container name and the free space are associated with each other. As shown in FIG. 4, the container name of the container 41, for example, “BD (additional writing 5G)”, as shown in FIG. 4, currently has some Blu-ray related removable media inserted in the removable media drive 19 and has a capacity for additional writing. It shows that it is 5 GB.

  Further, as shown in FIG. 5, the container name “BD (overwrite 25 GB)” refers to data that has already been written to the removable medium because some removable disk related to Blu-ray has been inserted in the removable media drive 19. This indicates that the capacity that can be written to the removable medium when overwriting is 25 GB. Hereinafter, it means the names of removable media and the writable capacity when they are blank media.

  The container name “dc: title” of the container 41 is UPnP metadata and means the name of the container.

  As shown in FIG. 7, the UPC 1 displays an upload destination selection screen 42 for selecting an upload destination. The upload destination selection screen 42 is a graphic user interface screen (GUI screen). The upload destination selection screen 42 displays the received information of the container 41 (container name, capacity, writable status, etc.), and an arbitrary container name displayed on the screen is selected by the operation unit 26. Thus, the control module 27 detects the container selected by the user.

  That is, when uploading content, the user on the UPC 1 side selects the content name to be uploaded on the upload destination selection screen 42 by operating the operation unit 26.

  In this example, in dc: title, the upload destination is a removable medium, its writable capacity, and information indicating whether to add or overwrite, but other metadata or BD The information may be notified by -R, a command on the network 3, or the like. Since dc: title is indispensable for UPnP or DLNA compatible devices, even existing UPC 1 can upload content (data) to DMS 2 without functional modification.

  The operation of this embodiment will be described with reference to FIG. FIG. 8 is an example of a sequence of upload processing performed via the network 3 between the UPC 1 and the DMS 2.

1) Device discovery step (steps S101 and S102)
The control module 27 of the UPC 1 sends an M-SERCH command to the network 3 and searches whether the DMS 2 exists in the network 3.

  In the DMS 2 connected to the network 3, the control module 27 returns a Response command in response to the M-SERCH command.

2) DMS2 capability confirmation step (steps S103 to S108)
When the response command is received from the DMS 2, the control module 27 of the UPC 1 subsequently sends an HTTP GAT Request command (Device Description Document) to the network 3, and the Response command (Device Description Description) from the DMS 2 is sent. Whether there is a recordable device is confirmed according to the contents (whether or not a recordable device is present).

  If it is detected that there is a recordable device on the DMS 2 side, the control module 27 of the UPC 1 sends an HTTP GAT Request command (Service Description Document) to the network 3 and a Response command (Service) from the DMS 2. It is confirmed whether or not the data to be uploaded can be dubbed according to the contents described in (Description Document) (whether or not there is a service function).

  As a result of the confirmation, if there is a service function on the DMS 2 side, the control module 27 of the UPC 1 sends a command such as CDS: X_Get DLNR Upload Profile or CMS: Get Protocol Info Request to the network 3, and a response command (Device) from the DMS 2. Whether or not it has a DLNR upload profile is confirmed based on the contents described in the Description Document) (whether or not a DLNR upload profile is present).

3) Upload destination container selection step (steps S109 and S110)
If the DLNR upload profile is present on the DMS2 side as a result of the confirmation, then the control module 27 of the UPC1 sends a command such as CDS: Browse Request to the network 3, and the CDS: Browse Response command is received from the DMS2. Then, the information of each container disclosed by the DMS 2 included in the response is extracted, and the candidate information of the upload destination is acquired.

  When the candidate information of the upload destination is acquired, the candidate information of the upload destination is displayed on the upload destination selection screen 42 shown in FIG. 7 and waits for the upload destination container to be selected by the operation of the operation unit 26 by the user. . The upload destination container search is performed by issuing a plurality of CDS: Browse Requests.

4) Upload step (steps S111 and S113)
When a desired container name is selected from the container list displayed on the upload destination selection screen 42 by an operation from the operation unit 26, the control module 27 of the UPC 1 sends a command such as CDS: Create Object Request to the network. 3, when a CDS: Create Object Response command is received from the DMS 2, it is determined that the preparation for uploading is completed, and an HTTP POST Request (Content) is sent to the network 3, and the upload target stored in the UPC 1 Upload the content to the selected DMS2 container.

Here, the reception processing operation on the DMS2 side will be described with reference to FIG.
In DMS2, the control module 27 creates a corresponding removable media capacity information table 23 using information on removable media supported by the removable media drive 19 in preparation for uploading (step S201).

  Subsequently, the control module 27 acquires removable medium writable free space information 24 (step S202).

  Further, the control module 27 acquires removable medium overwrite writable capacity information 25 (step S203).

  Then, the control module 27 creates receivable container information (step S204).

  Finally, the control module 27 waits for a request from the UPC 1 as a UPnP device (step S205).

  In the DMS 2, when receiving a content upload to the container 41 shown in FIG. 6 from the UPC 1 side, the control module 27 performs different operations as shown in the flowchart of FIG. 10 according to the container type (standard and type). .

  First, the control module 27 determines to which container the CDS: Create Object is an upload request, and performs processing according to the following container type (step S301 in FIG. 10).

a) In the case of BD (additional writing 5 GB) (step S302),
A message such as “Append to the removable media inserted in the removable media drive 19” is displayed on the display device 14 of the DMS 2.
Add the received content to the removable media inserted in the removable media drive 19.

b) In the case of BD (overwrite 25 GB) (step S303),
A message such as “Overwrite the removable media inserted in the removable media drive 19” is displayed on the display device 14 of the DMS 2.
The received content is overwritten on the removable media inserted in the removable media drive 19.

c) In the case of BD-R (new 25 GB) (step S304),
A message is displayed on the display device 14 of the DMS 2 “Please insert a new BD-R (25 GB) media into the removable media drive” and wait for the removable media to be inserted.
If the inserted removable medium is correct (Yes in step S305), the received content is written (step S306).

d) In the case of BD-R DL (new 50 GB) (step S304),
A message such as “Please insert a new BD-R DL (50 GB) media into the removable media drive” is displayed on the display device 14 of the DMS 2 and waits for the removable media to be inserted.

When the removable medium is inserted into the removable media drive 19 by the user, the control module 27 causes the removable media drive 19 to read the information on the removable medium inserted into the removable media drive 19 and obtains the information. Then, it is determined whether or not the removable medium is correct (step S305). If the removable medium is correct (Yes in step S305), the received content is written to the removable medium (step S306).

e) In the case of BD-RE (new 25 GB) (step S304),
A message such as “Please insert a new BD-RE (25 GB) media into the removable media drive 19” is displayed on the display device 14 of the DMS 2 and waits for the removable media to be inserted.
-If the inserted removable media is correct, the received content is written.

f) In the case of BD-RE DL (new 50 GB) (step S304),
A message such as “Please insert a new BD-RE DL (50 GB) media into the removable media drive 19” is displayed on the display device 14 of the DMS 2 and waits for the removable media to be inserted.
If the inserted removable medium is correct (Yes in step S305), the received content is written (step S306).

  If the corresponding removable medium is not inserted by the user after waiting for a predetermined time in steps c) to f) (No in step S305), a message is repeatedly displayed to prompt the user to insert the removable medium or upload. Stop receiving.

  In this way, a user who uses the UPC 1 that is the transmission side device can perform a dubbing (copying) operation in the UPC 1 to write to a removable medium that is not inserted in the removable media drive 19 of the DMS 2 at that time.

As described above, according to this embodiment, the content stored in the transmitting device is transferred via the LAN to the removable media drive 19 (for example, a Blu-ray disc drive (BD drive) mounted in the DMS 2 that is the receiving device. ) Etc.), when performing a copy operation (dubbing) such as writing to a removable media such as a BD set in the above, the type of removable media that the media recording device (removable media drive 19) mounted on or connected to the DMS 2 supports. And a container that associates the remaining capacity of each medium as a different writing destination for each type of media, and transmits to UPC1 so that the user using UPC1 can use the removable media drive of DMS2 at that time in UPC1. 19 was inserted There is not operating to write the content also to the removable media (dubbing operations such as copying or moving) is possible.
That is, according to the embodiment, it is possible to provide a data transmission apparatus and a network copy system that allow a user to easily dubb digital contents onto a recording medium via a network.

(Other embodiments)
In addition, embodiment of this invention is not limited only to the said embodiment, You may change a component in the range which does not deviate from the summary in an implementation stage. For example, a form in which changes including expansion and partial deletion of each element described in the embodiment are included in the technical scope of the present invention.

  For example, when creating the container 41 shown in FIG. 6, in the above example, it is created by referring to the corresponding removable media capacity information table 23, the removable media writable free space information 24, and the removable media overwrite writable capacity information 25. However, in addition to this, for example, as shown in FIG. 11, the container 41 can be determined by keying in information on a new medium that the user has or a recordable recording medium that has already been written. . Each container is as follows.

a) BD (Additional 5GB)
The user holds a BD medium that can be additionally written and has a free space of 5 GB.
b) D (Appendix 10GB)
The user holds a BD medium that can be additionally written and has a free space of 5 GB.
c) BD (Additional 1GB)
The user holds a BD medium that can be additionally written and has a free space of 5 GB.
d) BD-R (new 25GB)
The user holds new BD-R media.
f) BD-RE (new 25GB)
A user holds a new BD-RE media.

  The example in FIG. 11 is an example in which the user does not hold the BD-R and BD-RE DL (two-layer) media even if the DMS2 removable media drive 19 is compatible. . In this way, the dubbing operation for writing to the removable medium from the UPC 1 side can be performed in consideration of the information on the removable medium held by the user.

  Furthermore, as in the example of the container 41 shown in FIG. 12, conditions such as “× 5”, “failure when exceeded”, “divided when exceeded” are added to each upload destination container, and the upload destination further means May be provided. In this case, each container is as follows.

a) BD-R (new 25GB) X5
B) BD-R (new 25 GB) (failed when 25 GB is exceeded)
If the uploaded content size exceeds 25 GB, the transfer is canceled before writing.
c) BD-R (new 25GB) (divided when over 25GB)
When the size of the content uploaded to DMS2 exceeds 25 GB, it is divided and written.

  As shown in this example, the recording condition of the medium is added to the name of the container 41 and sent to the UPC 1, and the UPC 1 side displays the acquired information of the container 41 on the upload destination selection screen 42, and the user uploads the upload destination selection screen. By selecting an upload destination container having an appropriate recording condition of the medium from among the containers shown in 42, it is possible to select a writing method to the removable medium in the DMS2.

  That is, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. Moreover, you may delete some components from all the components shown by embodiment.

  Further, each component shown in the above embodiment may be realized by a program installed in a storage such as a hard disk device of a computer, and the program is stored in a computer-readable electronic medium: electronic media, The computer may realize the functions of the present invention by causing a computer to read a program from an electronic medium. Examples of the electronic medium include a recording medium such as a CD-ROM, flash memory, and removable media. Further, the configuration may be realized by distributing and storing components in different computers connected via a network, and communicating between computers in which the components are functioning.

  DESCRIPTION OF SYMBOLS 1 ... Upload controller (UPC), 2 ... Digital media server (DMS), 3 ... Network, 11 ... Digital tuner, 12 ... Decryption module, 13 ... Decryption module, 14 ... Display apparatus, 15 ... Content management information extraction module, DESCRIPTION OF SYMBOLS 16 ... Content management information management module, 17 ... Encryption module, 18 ... Digital interface (digital IF), 19 ... Removable media drive, 20 ... Content management information creation module, 21 ... Hard disk drive, 22 ... Memory, 23 ... Corresponding removable Media capacity information table, 24 ... capacity information, 25 ... possible capacity information, 26 ... operation unit, 27 ... control module, 31 ... data transmission control module, 32 ... search module, 33 ... screen output module, 3 ... upload module, 35 ... media information creation module, 36 ... recording control module, 41 ... container, 42 ... upload destination selection screen.

Claims (3)

Connected to the transmitting device where digital contents are stored via a network, receives the digital content from the device via the network, and can be inserted into and removed from a media recording device mounted on the device or connected to the device In a data transmission device for copying to a recording medium set in
When the media recording device is connected, the plug-and-play function creates media information from the type and capacity of the recording media on which the media recording device can record data, and the created media information A media information creation module to be transmitted to the device;
When the remaining capacity of the recording medium selected as the upload destination from the device is insufficient for recording the digital content, or when the recording medium is not set, the recording medium is set in the media recording device. And a recording control module for recording the received digital content on the recording medium set in the media recording device. Data that is stored in digital content, uploaded to a receiving device connected via a network, and copied to a recording medium that is removably set in a media recording device mounted on or connected to the device In transmission equipment,
A search is made as to whether or not a device capable of copying the digital content exists in the network, and media information including the type and capacity of the recording medium on which the media recording device can record data is obtained from the searched device. A search module to retrieve,
A screen output module that outputs an upload destination selection screen indicating an upload destination with the type of the recording medium extracted from the media information acquired by the search module and the remaining recordable capacity; and
A data transmission apparatus comprising: an upload module for uploading the digital content to a desired upload destination selected from the upload destination selection screen. A first device on the transmission side in which digital content is stored and a second device on the reception side that receives the digital content are connected via a network, and the digital content is connected from the first device via the network to the second device. In a network copy system for copying to a recording medium that is detachably set in a media recording device mounted on or connected to a second device,
The first device is:
A search is made as to whether or not a device capable of copying the digital content exists in the network, and media information including the type and capacity of the recording medium on which the media recording device can record data is obtained from the searched device. A search module to retrieve,
A screen output module that outputs an upload destination selection screen indicating an upload destination with the type of the recording medium extracted from the media information acquired by the search module and the remaining recordable capacity; and
An upload module for uploading the digital content to a desired upload destination selected from the upload destination selection screen;
The second device is
When the media recording device is connected, the plug-and-play function creates media information from the type and capacity of the recording media on which the media recording device can record data, and the created media information A media information creation module for transmitting to the first device;
When the remaining capacity of the recording medium selected as the upload destination from the first device is insufficient for recording the digital content or when the recording medium is not set, the recording medium is used as the media recording device. And a recording control module for recording the received digital content on the recording medium set in the media recording device.

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