WO2006085533A1 - コンテンツ受信装置およびコンテンツ送信装置 - Google Patents
コンテンツ受信装置およびコンテンツ送信装置 Download PDFInfo
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- WO2006085533A1 WO2006085533A1 PCT/JP2006/302080 JP2006302080W WO2006085533A1 WO 2006085533 A1 WO2006085533 A1 WO 2006085533A1 JP 2006302080 W JP2006302080 W JP 2006302080W WO 2006085533 A1 WO2006085533 A1 WO 2006085533A1
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- Prior art keywords
- content
- acquisition command
- receiving
- transmitting
- command
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
- G11B20/00688—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that a usable copy of recorded data can be made on another medium
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43622—Interfacing an external recording device
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
- G11B2220/2516—Hard disks
Definitions
- the present invention relates to a technology for moving content for which copying is prohibited from a content transmission device to a content reception device.
- FIG. 1 is a diagram showing a conventional content transfer method described in Patent Document 1 mentioned above.
- a connection is established between the disk recorder 101 as a server device (source device) and the digital VTR 102 as a client device (sink device) (step 103).
- the disc recorder 101 transmits a recording start command to the digital VTR 102 after the start of transmission of the content for which copying is prohibited (step 104) (step 105).
- the digital VTR 102 starts recording of the received content.
- the disc recorder 101 sequentially erases the portion of the content of which transmission has been completed on the disc recorder 101 as well. As a result, the movement (move) force of the content will be realized.
- Patent Document 1 JP-A-2002-245718 (FIGS. 8-9 and 9)
- the digital VTR 102 records the content transmitted from the disk recorder 101 in accordance with the recording start command. That is, the digital VTR 102 can not explicitly instruct the disk recorder 101 to move the content (move).
- SupplementtD of DTCP standard HTT Force that defines the content acquisition method according to P (HyperText Transfer Protocol)
- the digital VTR 102 uses the disk recorder 101, which is a server device. It is necessary to explicitly indicate the move of content (move).
- the client device is not permitted to record this content, and views the content. Only that is allowed. While the client device is recording the content transmitted from the server device while the server device deletes the content sequentially, it is regarded as moving (move) of the content, not copying of the content. Ru.
- the CopyNoMore content is also sent out as Sano equipment power as content that can be recorded for only one generation (hereinafter "Copy Once Content”).
- the disc recorder 101 which is the subject of a series of operations, transmits a recording start command to the digital VTR 102 and simultaneously erases the transmitted content on the disc recorder 101. It has realized movement (move).
- the digital VTR 102 mainly transmits the reproduction start command to the disc recorder 101
- the digital VTR 102 intends to move whether the reproduction start command is intended to be merely viewing. It can not be transmitted to the recorder recorder 101. That is, the digital VTR 102 can not record the copy-prohibited content transmitted from the disk recorder 101!
- the disc recorder 101 is a reproduction start command transmitted from the digital VTR 102. It can not be determined whether the intention is intended for viewing or moving. That is, there is a problem that the disk recorder 101 can not determine whether or not the content to be sent out should be erased sequentially due to the playback start command.
- An object of the present invention is to provide a content movement system capable of instructing the content transmission apparatus to move (move) the content.
- a content receiving apparatus is a content receiving apparatus for receiving content, and requests movement of content to a content acquisition command for acquiring content.
- a content acquisition command transmitting unit for transmitting the content acquisition command to which the movement request information has been added to the content transmission apparatus, and a content specified according to the content acquisition command
- content receiving means for receiving the content transmitting device power.
- the content receiving apparatus further includes recording means for recording the received content. By this, it becomes possible to record the content received from the content transmission device in the content reception device.
- the content receiving apparatus further includes a list acquisition command transmitting unit that transmits, to the content transmitting apparatus, a list acquisition command for acquiring a list of content recorded in the content transmitting apparatus.
- a list receiving means for receiving from the content transmitting apparatus, a presenting means for presenting the received list to the user, and an instruction of the content recorded in the apparatus among the contents included in the presented list.
- the movement request information may be added to a content acquisition command for acquiring the instructed content.
- a content transmission apparatus is a content transmission apparatus for transmitting content, and the content acquisition command for acquiring content acquisition command for acquiring content is received.
- Content transmitting means, and the content specified in the content acquisition command is content for which copying is prohibited, and movement request information indicating that content movement is requested is the content acquisition command.
- Judgment means for judging whether or not a car is added, and the contents are contents for which copying is prohibited, and it is strongly judged that the movement request information is added to the contents acquisition command.
- the content acquisition command is provided with restriction means for deleting the content specified in the content acquisition command from the device or making the content unavailable in the device.
- restriction means for deleting the content specified in the content acquisition command from the device or making the content unavailable in the device.
- the content transmission unit transmits the content for which copying is prohibited to the content reception device. By this, it becomes possible to move the content for which copying is prohibited to the content transmitting device power receiving device.
- the content transmitting apparatus further includes list acquisition command receiving means for receiving, by the content receiving device, a list acquiring command for acquiring a list of contents recorded in the recording means.
- the information processing apparatus may further comprise list transmission means for transmitting a list to the content reception device.
- the content receiving device and the content transmitting device may be compliant with DTCP-IP (Digital Transmission Contents Protection over IP). This makes it possible to determine whether or not to allow the movement of the content based on the copyright protection information, so that it is possible to prevent the illegal use of the content.
- DTCP-IP Digital Transmission Contents Protection over IP
- the content acquisition command may be a GET command in HTTP (HyperText Transfer Protocol). This makes it possible to realize content movement according to widely used protocols.
- the present invention can be realized as such a content receiving apparatus or content transmitting apparatus, and such content transmitting apparatus can be used as a content receiving apparatus. It can be realized as a content moving system for moving the content, or as a content receiving method or content transmitting method with the characteristic means included in such content receiving device or content transmitting device as a step, or such content moving method. It can be realized as a content movement method in which the characteristic means provided by the system are taken as a step.
- the content of the content receiving apparatus is notified that movement is requested instead of viewing content, and the content receiving apparatus becomes the content transmitting apparatus, and the content receiving apparatus takes the lead in content transmission. It is possible to instruct the device to move content. As a result, the user only has to operate the content receiving device to which the content is to be moved! /, So the practical value is extremely high compared to the prior art in which the content transmitting device to be the content moving source is operated. High.
- FIG. 1 is a diagram showing conventional content movement.
- FIG. 2 is a diagram showing a content transfer method according to the embodiment of the present invention.
- FIG. 3 is a block diagram of a server device according to an embodiment of the present invention.
- FIG. 4 is a diagram showing a general GET command.
- FIG. 5 is a diagram showing a general response.
- FIG. 6 is a diagram showing a GET command according to the embodiment of the present invention.
- FIG. 7 is a diagram showing a response according to the embodiment of the present invention.
- FIG. 8 is a block diagram of a client device according to an embodiment of the present invention.
- FIG. 9 is a diagram showing a TV screen presenting a device list.
- FIG. 10 is a diagram showing a TV screen presenting a program list.
- FIG. 11 is a diagram showing an operation of the server device according to the embodiment of the present invention.
- FIG. 12 is a diagram showing an operation of the client device according to the embodiment of the present invention. Explanation of sign
- FIG. 2 is a diagram showing an outline of a content moving method according to an embodiment of the present invention.
- the server device is a content transmission device that transmits content, and in this example, the HDD recorder 200 is illustrated.
- the client device is a content receiving device for receiving content, and here a digital VTR 400 is illustrated.
- the server device and client device shall conform to Digital Transmission Contents Protection over IP (DTCP).
- DTCP Digital Transmission Contents Protection over IP
- the digital VTR 400 transmits a content list acquisition command for acquiring the content list to the HDD recorder 200 (S 1). . Having received the content list acquisition command, the HDD recorder 200 transmits the content list to the digital VTR 400 (S2). The digital VTR 400 having received the content list transmits a content acquisition command to which a move flag described later is added to the HDD recorder 200 (S3). The HDD recorder 200 that has received the content acquisition command transmits a content that is prohibited to copy and transmits the content to the digital VTR 400 when the move acquisition flag is added to the content acquisition command (S4), and transmission of the content is performed.
- FIG. 3 is a block diagram of a server device for realizing the content transmission method according to the embodiment of the present invention.
- the HDD recorder 200 is illustrated as a server device.
- HDD recorder 200 includes content list 201, HDD 202, digital tuner 203, content list return unit 204, command analysis unit 205, content transmission unit 206, and file Z range.
- a recording unit 207, a content deleting unit 208, a TCP / IP stack 209, and a program recording unit 210 are provided.
- the program recording unit 210 records the MPEG data output from the digital tuner 203 as a program on the HDD 202, creates the content list 201, and records the content list 201 on the HDD 202.
- a file name, a file length, and copyright protection information are recorded for each program recorded in the HDD 202.
- the copyright protection information referred to here is information called EMI (EncryptionModelndicator), and all contents are EMI of either "CopyNever ,,," CopyNoMore ,,, “CopyOnce” or "Copy Free". It is classified into types. "CopyFree" means that the content can be freely copied.
- “CopyOnce” means that the content is permitted to record for only one generation. When “CopyOnce” content is recorded, the content becomes “CopyNoMore” content, and recording of subsequent generations is prohibited. “Copy None” means that the content is not permitted to record at all
- the program recording unit 210 classifies each program into an EMI type with reference to CCI information (CopyControlInformation) in the MPEG data acquired by the digital tuner 203, and writes the classification result in the content list 201.
- the HDD recorder 200 is connected to the network via the Ethernet (registered trademark) 300, and exchanges content with the client device.
- the content list return unit 204, the command analysis unit 205, and the content transmission unit 206 communicate with the client device via the Ethernet (registered trademark) 300 via the TCP / IP stack 209.
- the command analysis unit 205 instructs the content list return unit 204 to transmit the content list 201 when the client device power also receives the content acquisition command.
- the content list return unit 204 reads out the content list 201 from the HDD 202 and sends it to the client device that has sent the content list acquisition command. Do.
- the command analysis unit 205 instructs the content transmission unit 206 to transmit the content when the client device power also receives the content acquisition command. At this time, the command analysis unit 205 records the file name and the range information contained in the content acquisition command in the file Z range recording unit 207.
- FIG. 4 is a diagram illustrating an example of a general GET command 500.
- the GET command 500 is an example of a content acquisition command, and is a command specified in HTTP.
- "file003.m pg" indicates the file name
- This GET command 500 is a command for acquiring a part of the content of the file name file003.mpg (that is, from the 128th byte, the 555th 009th byte to the 129th byte, the 129th byte, the 592nd byte).
- the content transmission unit 206 acquires a file name and range information from the file / range recording unit 207. Then, the content of the portion corresponding to these pieces of information is read out from the HDD 202 and transmitted as a response to the client device, and a completion notification is returned to the command analysis unit 205.
- FIG. 5 is a diagram showing an example of a response corresponding to a general content acquisition command.
- the response 501 includes the content (acquired content) 502 read from the HDD 202.
- the acquired content 502 includes part or all of the content read from the HDD 202 as it is.
- the acquired content 502 includes a PCP (Protected Packet Packet) header 504 and encrypted content 505.
- the PCP header 504 includes an EMI 503, and the encrypted content 505 is encrypted in an encryption mode corresponding to the EMI 503.
- the content transmission unit 206 reads out the EMI corresponding to the program read out from the HDD 202 from the content list 201. Then, a ciphertext corresponding to the EMI is applied to the content to create a ciphertext 505, and the EMI 503 is inserted into the PCP header 504.
- FIG. 6 is a diagram showing an example of a content acquisition command according to the present invention.
- MoveTransferMode6 00 is a mode command that indicates whether the GET command 500 requests to move content or not! It is a lag and is an example of movement request information according to the present invention. If the value of MoveTransferMode600 is 1, it indicates that the client device that is the sender of the GET command 500 requests a content move. On the other hand, if the value of MoveTransferMode600 is force SO or MoveTransferMode600 is not included in GET command 500, it indicates that the client device that is the sender of GET command 500 requests the move of the content. It is.
- FIG. 7 is a diagram showing an example of the response to the content acquisition command according to the present invention.
- MoveTransferMode 601 is a mode indicator corresponding to MoveTransferMode 600.
- the same value as MoveTransferMode 600 included in GET command 500 corresponding to response 501 is attached to MoveTransferMode 601.
- command analysis unit 205 When Move Transfer Mode 600 is included in GET command 500 received from the client device, command analysis unit 205 also notifies the value of Move Transfer Mode 600 when instructing content transmission unit 206 to transmit content. .
- the content transmission unit 206 When content transmission is instructed from the command analysis unit 205, the content transmission unit 206 also notifies the mode transfer mode 600 together, and determines whether the value of the mode transfer mode 600 is 1 or not. Then, if the value of ModeTransferMode 600 is 1, when creating acquired content 502 included in response 501, the value of EMI corresponding to the content is read from content list 201, and the PCP header is based on the value of EMI. Change the value of EMI 503 in 504.
- the content transmission unit 206 When transmitting the response 501 to the client device, the content transmission unit 206 sends a deletion instruction to the content deletion unit 208.
- the content deletion unit 208 which has received the deletion instruction reads the file name and range information from the file / range recording unit 207, and after deleting the content of the portion corresponding to these information from the HDD 202, the content transmission unit A completion notification is returned to 206.
- the content transmission unit 206 that has received the completion notification returns the completion notification to the command analysis unit 205.
- the server device can transmit the CopyNoMore content as the CopyOnce content to the client device if the move flag is attached to the content acquisition command that has also received the client device power. Also, this CopyNoMore content can be deleted from the server device.
- MoveTransferMode 600 has a value of 1 or 0, but information indicating that content transfer is requested (for example, MoveTransfer Mode and!, A character string) Even if only the GET command 500 is included in the GET command 500, the same operation as when MoveTransferMode600 has a value of 1 may be performed. That is, even if the value of MoveTransferMode 600 included in the GET command 500 is 1, the move acquisition flag is added to the content acquisition command, even if the character string MOVeTransferMode is included in the GET command 500. It is the same in t ⁇ , ⁇ point.
- the timing at which the content transmission unit 206 returns the response 501 and the timing at which the content deletion unit 208 deletes the content are the same.
- the timing of removing the is not limited to this. That is, it goes without saying that the same effect as described above can be obtained even if the content is deleted after the confirmation response about the response 501 is sent from the client device.
- FIG. 8 is a block diagram of a client device that implements a content receiving method according to an embodiment of the present invention.
- the digital VTR 400 is illustrated as a client device.
- the presentation unit 413 presents a GUI on a TV screen or the like, and the user can issue various instructions to the digital VTR 400 using the instruction unit 414 such as a remote control while watching the TV screen. It has become By this, when the user selects the HDD recorder 200, the digital VTR 400 transmits a content list acquisition command to the HDD recorder 200, and in response to this, when the HDD recorder 200 returns the content list 201, The content list 201 is presented to the user.
- FIG. 9 is a diagram showing a TV screen 700 presenting a device list.
- the TV screen 700 is presented with devices connected to the digital VTR 400 such as “DVD recorder” and “HDD recorder”.
- the remote control By operating the remote control, the user can select a device as a content acquisition destination. For example, when the "HDD recorder" is selected and the enter button 701 is pressed, the HDD recorder 200 can be selected as a device from which content is to be acquired. When the cancel button 702 is pressed, the previous menu is restored.
- FIG. 10 is a diagram showing a TV screen 700 presenting a program list.
- the content list 201 of the HDD recorder 200 is presented on the TV screen 700 as a program list.
- the information (program name) for identifying each program such as “program 1” and “program 2” is presented to indicate the state.
- the user can select a desired program, and can indicate to digital VTR 400 whether the program has been viewed or recorded. For example, pressing the record button 703 while selecting "program 1" indicates that the program 1 on the HDD recorder 200 is to be recorded, and the "watch 1" is selected while viewing the program button 704. When is pressed, an instruction to view the program 1 on the HDD recorder 200 is given.
- the file name 401 in FIG. 8 indicates the file name corresponding to the program selected by the user, and the Move Z viewing information 409 indicates the content instructed by the user (that is, information that means viewing or recording). . Note that pressing the Cancel button 705 Go back to the menu!
- content acquisition unit 402 When the user instructs to view or record a program on HDD recorder 200, content acquisition unit 402 creates GET command 500 and transmits it to HDD recorder 200. At this time, it is possible to issue GET command 500 to acquire all of the programs at one time. Here, in consideration of performing special reproduction, it is possible to divide the program into plural parts and acquire it. Issue a GET command 500 pointing to the range. That is, the content acquisition unit 402 has a range counter 403 inside, and uses this range counter 403 to record which part of the program has been acquired. Then, when issuing the next GET command 500, the range is specified so as to acquire the subsequent part of the acquired part.
- range counter 403 has the last value "129, 134, 592". It is recorded. Therefore, in the next GET command 500, bytes 129, 134, 593 to 129, 714, 176 of the file name file003.mpg are specified. Whether or not the entire file has been acquired can be determined based on the “file length” included in the content list 201. That is, if the value recorded in the range counter 403 is smaller than the "file length", it means that the entire file has not been acquired yet.
- the content acquisition unit 402 When receiving the response 501 returned by the HDD recorder 200 in response to the GET command 500, the content acquisition unit 402 extracts the acquired content 502 from the response 501 and sends it to the acquired content processing unit 404.
- the EMI extraction unit 405 in the acquired content processing unit 404 extracts the value of the EMI 503 from the PCP header 504 included in the acquired content 502, and decrypts the encrypted content 505 based on the extracted value, and then decodes it.
- the decoder 406 decodes the decoded content and outputs a signal for viewing. As a result, the content acquired from the server device is output to the TV screen and viewed by the user.
- the move Z viewing information 409 means the recording of a program, and the operation in the case where it is performed will be described.
- the content acquisition unit 402 adds MoveTransferMode 600 indicating that movement of content is requested to the GET command 500, and sets the value to 1.
- Move Z viewing information 409 means recording of a program, and the value of EMI 503 included in the acquired content 502 obtained from the content acquiring unit 402 indicates CopyOnce or CopyFree! / If so, the decrypted content is sent to the decoder 406, and the decrypted content is also sent to the signal recording unit 407.
- the signal recording unit 407 records the decrypted content received from the acquired content processing unit 404 on the video tape 410.
- the move flag is added to the content acquisition command to be transmitted to the server device.
- the CopyNoMore content recorded on the server device can be sent out as CopyOnce content, and this CopyOnce content can be recorded on the client device.
- the presence or absence of decoding may be designated in the force content acquisition command described as to whether the decoder 406 always decodes received data.
- a flag indicating the presence or absence of decoding can be used instead of the move flag. That is, MoveTransferMode is a flag indicating the presence or absence of content movement, whereas, for example, RenderingTransferMode is a flag indicating the presence or absence of decoding (rendering). It is needless to say that the same effect as described above can be obtained even if this Rendering Transfer Mode is added to the content acquisition command and this value power ⁇ is interpreted as the intention to move the content.
- the present invention is not limited to this, in which the content obtained by acquiring the server device power is to be recorded on the video tape 410. That is, it goes without saying that the same effect as described above can be obtained by recording the content on another type of recording medium such as a hard disk or an optical disk.
- FIG. 11 is a diagram showing an operation of the server device according to the embodiment of the present invention.
- the server device records the number thread and the content list (Sl 1).
- the content list is transmitted to the client device (S13).
- the content acquisition command is also received by the client device power (Y in S14)
- the movie attached to the content acquisition command is received. It is determined whether the value of the flag is 1 or not (SI 5).
- the value of the move flag is 1 (Y in S15)
- the move flag has a value of 1 and the content specified in the content acquisition command is not CopyNoMore content (Y in S15, N in S16), the move flag has a value of 0. If the content specified in the content acquisition command is not CopyFree content (N in S15 ⁇ N in S20), the content is encrypted in a mode according to EMI (S21), and the encrypted content is encrypted. Sends the response including the to the client device (S22).
- FIG. 12 is a diagram showing an operation of the client device according to the embodiment of the present invention.
- the client device transmits a content list acquisition command to the server device (S 31).
- the server apparatus also receives the content list (S32)
- the content list is recorded and presented to the user (S33 ⁇ S34).
- the encrypted content is decrypted in the CopyOnce mode (S40 ⁇ S41), and the decrypted content is decoded and also recorded. (S42 ⁇ S43). If the content is CopyFree content, the content is decoded and recorded on the recording medium (S40 ⁇ S42 ⁇ S43). In addition, it is neither CopyOn content nor CopyFree content! /, In the case, the encrypted content is decrypted in a mode according to the EMI, and the decrypted content is decoded (S40 ⁇ S48 ⁇ S49).
- the content is decoded (Y ⁇ S49 in S47). If the content is not CopyFree content, the encrypted content is decrypted in a mode according to the EMI, and the decrypted content is decoded (N ⁇ S48 ⁇ S49 in S47).
- the present invention it is transmitted to the content transmitting device that the movement is requested instead of viewing the content to the content transmitting device, and the content receiving device takes the lead in transmitting the content. It is possible to instruct the device to move content. As a result, the user only has to operate the content receiving device to which the content is to be moved! /, So the practical value is extremely high compared to the conventional technology for operating the content transmitting device to be the content transfer source High.
- the present invention can also be realized as a program that causes a computer to execute the steps shown in FIG. 11 or FIG. It goes without saying that such a program can be distributed via a recording medium such as a CD-ROM or a transmission medium such as the Internet.
- the acquired content processing unit 404, the EMI extraction unit 405, the decoder 406, the signal recording unit 407, the list acquisition unit 411, the presentation unit 413, and the instruction unit 414 can also be realized as an LSI that is an integrated circuit. These are individually made into one chip May be included, or one chip may be included to include part or all. Here, it is sometimes called IC, system LSI, super LSI, or ultra LSI, depending on the difference in the degree of force integration as an LSI.
- the method of circuit integration is not limited to LSI's, and implementation using dedicated circuitry or general purpose processors is also possible. It is also possible to use an FPGA (Field Programable Gate Array) that can be programmed after LSI fabrication, or a reconfigurable 'processor that can reconfigure connection and settings of circuit cells inside the LSI. Furthermore, if integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative other technology, it is naturally also possible to carry out function block integration using this technology. Adaptation of NO technology may be possible.
- FPGA Field Programable Gate Array
- the command analysis unit 205 is an example of a content acquisition command reception unit and a list acquisition command reception unit according to the present invention.
- the content transmission unit 206 is an example of the content transmission unit and the determination unit according to the present invention.
- the content deletion unit 208 is an example of the restriction means according to the present invention.
- the program recording unit 210 is an example of the recording means according to the present invention.
- the content list return unit 204 is an example of the list transmission means according to the present invention.
- the content acquisition unit 402 according to the embodiment of the present invention is an example of an additional unit, a content acquisition command transmission unit, and a content reception unit according to the present invention.
- the signal recording unit 407 according to the embodiment of the present invention is an example of the recording means according to the present invention.
- the list acquisition unit 411 according to the embodiment of the present invention is an example of a list acquisition command transmission unit and a list reception unit according to the present invention.
- the presentation unit 413 according to the embodiment of the present invention is an example of the presentation means according to the present invention.
- the instruction unit 414 according to the embodiment of the present invention is an example of the instruction means according to the present invention.
- the present invention can be applied to applications such as HDD recorders, digital VTRs, DVD recorders and the like which require the content receiving apparatus to mainly instruct the content transmitting apparatus to move the content.
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Abstract
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JP2004110816A (ja) * | 2002-08-28 | 2004-04-08 | Matsushita Electric Ind Co Ltd | コンテンツ複製管理装置、コンテンツ複製管理方法、コンテンツ再生装置、コンテンツ再生方法、コンテンツ複製管理システム、及びプログラム |
JP2004185538A (ja) * | 2002-12-06 | 2004-07-02 | Sony Corp | データ転送方法、データ転送システム、端末装置 |
JP2004328517A (ja) * | 2003-04-25 | 2004-11-18 | Toshiba Corp | 受信装置、通信装置、受信システム及び受信方法 |
JP2004341657A (ja) * | 2003-05-14 | 2004-12-02 | Sony Corp | サーバ装置、情報処理装置、および情報処理方法、並びにコンピュータ・プログラム |
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2006
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JP2004110816A (ja) * | 2002-08-28 | 2004-04-08 | Matsushita Electric Ind Co Ltd | コンテンツ複製管理装置、コンテンツ複製管理方法、コンテンツ再生装置、コンテンツ再生方法、コンテンツ複製管理システム、及びプログラム |
JP2004185538A (ja) * | 2002-12-06 | 2004-07-02 | Sony Corp | データ転送方法、データ転送システム、端末装置 |
JP2004328517A (ja) * | 2003-04-25 | 2004-11-18 | Toshiba Corp | 受信装置、通信装置、受信システム及び受信方法 |
JP2004341657A (ja) * | 2003-05-14 | 2004-12-02 | Sony Corp | サーバ装置、情報処理装置、および情報処理方法、並びにコンピュータ・プログラム |
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