JP2010067321A - Recording/playback device, and method for controlling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording/playback device that allows a user to view an image of original content stored therein without requiring an optical disk to be kept mounted even if an instruction is made to reproduce the content stored in the optical disk. <P>SOLUTION: In the recording/playback device 2, a storage part 4 encrypts received content X by using a first key 14 to store it as content X1 into an HDD 6. When a copy instruction is made, the device 2 extracts a predetermined type of information from the content X1, and writes in an optical disk 1 content X2 encoded using a second key 15 by an ODD 8. The device 2 stores content identification information C1 into a storage information management part 5 in association with disk identification information D1. When an instruction is made to reproduce the content X2, the device 2 discriminates whether the content X1 corresponding to the content X2 remains in the HDD 6 by referring to the storage information management part 5 by a playback determination part 9, and performs playback by an HDD playback part 10 if the content X1 remains. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a recording / reproducing apparatus that controls storage and reproduction of content.

  From the viewpoint of protecting the copyright of the content, copy control information is added to the content of the digital television broadcast. When a move operation is performed on content that is permitted to be stored only once (so-called copy-once content), the hard disk device with a built-in recording / playback device (hereinafter referred to as “built-in HDD”) is compliant with the copy-once regulations. The following are known technologies that improve the usability by leaving content in

  That is, when performing the move operation from the built-in HDD to the removable optical disk, the contents are encrypted and stored using the optical disk key.

By using this method, it is necessary to mount the optical disk having the key on the recording / reproducing apparatus during the reproduction of the content stored in the internal HDD. This protects the copyright of the content and allows the content to remain in the built-in HDD even if it is moved. Further, it can be played back by a built-in HDD whose playback speed is faster than playback by an optical disk (see, for example, Patent Document 1).
JP 2006-85815 (9th page, FIG. 2)

  As a provisional measure for relaxing the copy once rule, the dubbing 10 rule is currently in operation, and the conditions for the number of times of copying are relaxed compared to the conventional copy once. Therefore, the content stored in the internal HDD (hereinafter also referred to as “original content”) and the content copied on the optical disc (hereinafter also referred to as “copy content”) using the content in the internal HDD as a copy source It became possible to store at the same time.

  On the other hand, when copying from the built-in HDD to the optical disc, the content stored on the optical disc is video data or the like because it is copied in accordance with a predetermined rule such as DVD-VR (Digital Versatile Disk Video Recording). Only predetermined information is extracted. That is, the copy content has a smaller amount of information than the original content.

  Therefore, when the content stored on the optical disk is to be reproduced and the original content is stored in the built-in HDD in the recording / reproducing apparatus, the original content having a large amount of information is reproduced and the content is viewed. There is a demand to do.

  However, in the above-described technique, it is necessary to keep the optical disc inserted even at the present time when the dubbing 10 that can be duplicated a plurality of times is adopted. That is, in the above-described technique, it is necessary to always mount an optical disk during the reproduction of the content stored in the built-in HDD in spite of the content received in accordance with the dubbing 10 rule, and the usability becomes worse. There was a problem that it was.

  Therefore, the present invention has been made to solve the above problems, and even when a reproduction instruction is given to content stored on an optical disc, the original content as an extraction source is stored in the apparatus itself. In such a case, an object of the present invention is to provide a recording / reproducing apparatus capable of viewing an image of original content without continuing to mount an optical disc.

  In order to achieve the above object, a recording / reproducing apparatus according to the present invention includes a receiving unit that receives first content in a digital format, and a first unit that is unique to the first unit that receives the first content received by the receiving unit. A first storage means for storing in the own apparatus using a key of the device, and a second content obtained by extracting a predetermined type of information from the first content stored in the first storage means. When storing the second content in the recording medium using a second key unique to the storage medium and the second content stored in the recording medium by the copying means The second storage means for storing the identification information of the first content and the identification information of the storage medium in association with each other, and when the reproduction instruction is given for the second content, Memory Using the identification information of the first content and the identification information of the storage medium stored in the above, the first content that is the extraction source of the second content for which the reproduction instruction has been issued is sent to the own device. If it is determined whether or not the first content is stored in the own device, it is stored in the own device using the first key of the own device. And a reproducing means for reproducing the first content.

  The recording / reproducing apparatus control method according to the present invention stores the received first content in digital format in the self apparatus using the first key unique to the self apparatus, and when a copy instruction is issued. The identification information of the first content and the identification information of the copy destination storage medium that is separate from the own device are associated with each other and stored in the own device, and predetermined information is obtained from the first content. The extracted second content is stored in the storage medium using a second key unique to the storage medium, and when the reproduction instruction is given for the second content, the stored in the own device Whether the first device from which the second content that has been instructed to be reproduced is extracted is stored in the device using the identification information of the first content and the identification information of the storage medium To determine whether When it is determined that the first content is stored in the own device, the first content stored in the own device is played using the first key of the own device. It is characterized by.

  According to the present invention, when a playback instruction is given to content stored on an optical disc, and original content that is an extraction source is stored in the device, the original is not continued without mounting the optical disc. You can view content images.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  FIG. 1 is a conceptual diagram of a recording / reproducing apparatus 2 according to an embodiment of the present invention. The recording / reproducing apparatus 2 has at least three functions of a storage function, a duplication function, and a reproduction function. The storage function of the recording / reproducing device 2 is a storage device that receives content such as digital television broadcast broadcast on radio waves from the broadcasting station 12 via the antenna 13 and is built in the recording / reproducing device 2. Is stored in an HDD (hard disk drive) 6 to be described later. Note that the recording / reproducing apparatus 2 may be configured to receive content distributed from the broadcasting station 12 via the IP network, and in this case, the recording / reproducing apparatus 2 also stores the content in the HDD 6.

  The duplication function of the recording / reproducing apparatus 2 duplicates (copies) the content stored in the HDD 6 of the recording / reproducing apparatus 2 with respect to the inserted optical disk 1.

  The playback function of the recording / playback apparatus 2 plays back specified content stored in the HDD 6 or the optical disc 1 and outputs it to a display device 100 such as a television connected to the recording / playback apparatus 2.

  The HDD 6 may be another storage device such as a semiconductor memory. The optical disk 1 may be another storage device such as an SD (Secure Digital) memory.

  FIG. 2 is a diagram showing functional blocks of the recording / reproducing apparatus 2 in the embodiment of the present invention. The recording / reproducing apparatus 2 includes a broadcast receiving unit 3, a storage unit 4, a storage information management unit 5, an HDD 6, a duplication unit 7, an ODD 8, a reproduction determination unit 9, an HDD reproduction unit 10, and an optical disc reproduction unit. 11 is the main component.

  The broadcast receiving unit 3 receives the original content (referred to as “content X”) sent from the broadcasting station 12 via the antenna 13 and sends the received content X to the storage unit 4. The broadcast receiving unit 3 also sends the received content X to the storage unit 4 when the content X sent by the broadcasting station 12 is received via the IP network. Here, the content X is a digital content to which copy control information CC and content identification information CI are added.

  The storage unit 4 encrypts the digital content X received from the broadcast receiving unit 3 by using the first key 14 that is a key unique to the recording / reproducing apparatus 2 stored in the stored information management unit 5 ( The encrypted content is referred to as “content X1”), and is sent to the HDD 6.

  Here, the encryption is performed using the first key 14 unique to the recording / reproducing apparatus 2, and even if the same model is used, the other recording / reproducing apparatuses 2 cannot be decrypted. Is to convert to On the other hand, encoding described later refers to conversion that can be decoded by other recording / reproducing apparatuses 2.

  The storage unit 4 sends copy control information CC and content identification information CI accompanying the received content X to the storage information management unit 5. The copy control information CC indicates the number of times that the content can be copied, such as copying not possible, copying only once, copying allowed 10 times, copy free, and the like. For example, for content that wants to prevent copying (duplication) such as pay broadcasting, it is possible to specify that copying cannot be performed or copying only once, and for content that does not require advanced copying prevention such as free broadcasting, copying can be performed 10 times or Specify copy-free. The content identification information CI is identification information unique to the content for identifying the content, and is sometimes called a content ID or the like.

  The stored information management unit 5 plays a role of storing and managing information. In addition to the first key 14, the storage information management unit 5 stores the copy control information CC received from the storage unit 4 and the content identification information CI.

  The storage information management unit 5 stores and manages the content file name (file name FN) and the content identification information CI in association with each other. The file name FN may be automatically added or may be defined by the user. As will be described later, the storage information management unit 5 stores the identification information (disc identification information DI) of the optical disc 1 in association with the content identification information CI when a copy instruction is given.

  FIG. 3 is an example of a conceptual diagram of information management in the stored information management unit 5 in the embodiment of the present invention. As illustrated in FIG. 3, the storage information management unit 5 includes the file name FN that is the file name of the content X 1 stored in the HDD 6, the content identification information CI that is the identification information of the content X, and the identification information of the optical disc 1. These pieces of information are managed by storing certain disc identification information DI in association with each other.

  More specifically, the content with the file name FN “Drama” is the content with the content identification information CI indicating “A”, and the content with the content identification information CI “A” is the disc identification in the past. The information DI is duplicated (copied) on an optical disc having information “α”. Similarly, the content whose file name FN is “sports” is the content whose content identification information CI indicates “B”, and the content whose content identification information CI is “B” is the disc identification information DI in the past. Is copied (copied) to the optical disc “β”. The file names FN having “movie” and “variety” are contents whose contents identification information CI indicates “C” and “D”, respectively. The contents whose content identification information CI is “C” and “D” are both copied (copied) to the optical disk whose disk identification information DI is “γ” in the past.

  The HDD 6 receives and stores the content X1 encrypted by the storage unit 4. When an operation command for deleting the content X1 stored on the HDD 6 is received as an operation command to the recording / playback device 2 by the user, the content X1 stored in the HDD 6 by a deletion unit (not shown) in the recording / playback device 2 is received. Then, the file name FN, content identification information CI, disc identification information DI, etc. stored in the storage information management unit 5 are deleted.

  By using the broadcast receiving unit 3, the storage unit 4, the receiving unit 5, and the HDD 6 described above, the recording / reproducing apparatus 2 plays a role as a storage function for storing the content X received from the broadcast station 12.

  The copying unit 7 reads the encrypted content X1 stored in the HDD 6 when the user instructs the recording / playback apparatus 2 to copy. The duplication unit 7 reads the first key 14 stored by the storage information management unit 5, decrypts the encrypted content X1, returns it to the content X in digital format, and sends it to the ODD 8. The duplication unit 7 updates the copy control information CC of the storage information management unit 5 after calculating the possible number of copies for the copy control information CC stored in the storage information management unit 5 according to the number of times of duplication. Let

  Here, in the copy control information CC stored in the storage information management unit 5, when the number of possible copies indicates zero, the content X 1 stored in the HDD 6 and the file name FN stored in the storage information management unit 5 The content identification information CI, the disc identification information DI, etc. are deleted. By this operation, the move is executed without leaving the content X1 that is not reproduced on the HDD 6, and the copy control information CC attached to the content X is protected.

  The ODD 8 determines whether or not the optical disk 1 is attached to the own apparatus as a copy destination, and notifies the storage information management unit 5 of the disk identification information DI of the optical disk 1. Next, the ODD 8 encodes the digital content X received from the duplication unit 7 by using the second key 15 unique to the optical disc 1 (the encoded content is referred to as “content X2”). The content X2 is written on the optical disc 1. Here, encoding refers to compressing the content X to a capacity that can be accommodated in the optical disc 1. As described above, the encrypted content X1 cannot be reproduced by the other recording / reproducing device 2, but the encoded content X2 can be reproduced by the other recording / reproducing device 2. Examples of encoding formats include MPEG (Moving Picture Experts Group) 2, MPEG4, AVC / H. H.264 (Advanced Video Coding).

  The reproduction determination unit 9 determines whether or not an instruction to reproduce the content X2 stored on the optical disc 1 has been issued. Next, the reproduction determination unit 9 determines whether or not the disc identification information DI of the optical disc 1 recognized by the ODD 8 exists in the storage information management unit 5. Next, the reproduction determination unit 9 determines whether or not the content identification information CI instructed to be reproduced exists in the storage information management unit 5. Further, the reproduction determination unit 9 determines whether or not the disc identification information DI of the optical disc 1 and the content identification information CI for which reproduction has been instructed exist in the storage information management unit 5, and the HDD reproduction unit 10 or the optical disc reproduction unit 11. Also responsible for sending to

  The HDD playback unit 10 decrypts the content X1 stored in the HDD 6 and plays back the content X.

  The optical disc playback unit 11 decrypts the content X2 stored on the optical disc 1 and plays back the decrypted content (referred to as “content X3”).

  By using the storage information management unit 5, the HDD 6, the duplication unit 7, and the ODD 8 described above, the recording / reproducing apparatus 2 plays a role as a duplication function. The storage information management unit 5, HDD 6, ODD 8, reproduction determination unit 9, HDD reproduction unit 10, and optical disk reproduction unit 11 described above serve as a reproduction function.

  FIG. 4 is a diagram showing the information content of the stored content when using the storage function and the duplication function in the recording / reproducing apparatus 2 in the embodiment of the present invention. 4A shows the information content of the source content X1 stored in the HDD 6, and FIG. 4B shows the information content of the content X2 stored in the optical disc 1.

  As shown in FIG. 4A, the content X1 stored in the HDD 6 includes video information 16a, data broadcast information 17, and caption information 18, each of which is a first key 14 unique to the recording / playback apparatus 2. It is encrypted using The video information 16 is video data such as a movie or a television program. The data broadcast information 17 is data related to, for example, information related to content contents, interactive services linked to programs, and the like. The caption information 18 is data obtained by converting sound into a language, or data obtained by translating sound into another language.

  As shown in FIG. 4B, the copy destination content X2 stored in the optical disc 1 is composed only of video information 16b encoded with the second key 15 unique to the optical disc 1. A DVD (Digital Versatile Disk) is mainly used for copying (copying) movies and television programs in the optical disk 1. When storing content with copy control information CC added, it is necessary to support a copyright protection technique called CPRM (Content Protection Recordable Media).

  In DVD media, only the DVD-VR standard supports CPRM. When duplication is performed in accordance with the DVD-VR standard, the data broadcast information 17 and the caption information 18 are not duplicated and are lost as a result. Therefore, as shown in FIG. 4B, the content X2 of the copy destination stored on the optical disc 1 is composed of video information 16b encoded with the second key 15 unique to the optical disc 1. That is, the copy destination content X2 is obtained by extracting the video information portion from the content X1. Accordingly, when each content is decrypted and reproduced, the content X1 can be converted back into the digital content X, but the content X2 is converted into the content X3 different from the content X because of the above extraction. Become.

  Here, the video information 16b encoded with the second key 15 is deteriorated in image quality and sound quality by being encoded as compared with the video information 16a encrypted with the first key 14. Accordingly, when the extraction source content X1 stored in the HDD 6 is reproduced, the video with the data broadcast information 17 and the caption information 18 can be reproduced. The content X1 is high-quality video / audio compared to the content X2 stored on the optical disc 1.

  Further, the content X1 of the extraction source stored in the HDD 6 and the content X2 stored in the optical disc 1 are encrypted or encoded with different keys (first key 14 and second key 15). Reproduction of the HDD 6 and the optical disc 1 can be performed independently.

  When the copy control information CC stored in the storage information management unit 5 indicates zero times, the content X1 stored in the HDD 6 by the copying unit 7 has already been deleted, so the operation of writing to the optical disc 1 corresponds to a move. .

  Next, the reproducing operation of the recording / reproducing apparatus 2 according to the present embodiment will be described. FIG. 5 is a flowchart showing the reproduction of the recording / reproducing apparatus 2 in the embodiment of the present invention.

  First, the ODD 8 determines whether or not the optical disc 1 is mounted on the own device (step S11).

  As a result, when the ODD 8 determines that the optical disk 1 is not loaded in the own apparatus (No in step S11), the subsequent processing is not performed until the ODD 8 determines that the optical disk 1 is loaded in the own apparatus.

  When the ODD 8 determines that the optical disk 1 is mounted on the own device (Yes in step S11), the reproduction determination unit 9 determines whether or not an instruction to reproduce the content X2 stored in the optical disk 1 is given ( Step S12).

  As a result, when the reproduction determination unit 9 determines that the instruction to reproduce the content X2 stored on the optical disc 1 has not been given (No in step S12), the reproduction determination unit 9 stores the content X2 stored on the optical disc 1. The subsequent processing is not performed until it is determined that a reproduction instruction has been issued.

  When the reproduction determination unit 9 determines that an instruction to reproduce the content X2 stored on the optical disc 1 has been given (Yes in step S12), the reproduction determination unit 9 recognizes the disc identification information DI of the optical disc 1 as the storage information management unit. 5 is determined (step S13).

  As a result, when the reproduction determination unit 9 determines that the disc identification information DI corresponding to the storage information management unit 5 does not exist (No in step S13), the reproduction determination unit 9 notifies the optical disc reproduction unit 11 to that effect. It is sent out (step S14a). The optical disc reproduction unit 11 receives a notification from the reproduction determination unit 9 that the corresponding disc identification information DI does not exist, and uses this notification as a trigger to decrypt the content X2 in the optical disc 1 and reproduce the content X3 ( Step S14b).

  Although the reproduction operation in the optical disk reproduction unit 11 is a known technique and will not be described in detail, the optical disk reproduction unit 11 reads the content X2 stored in the optical disk 1, reads the second key 15 from the optical disk 1, and reads this. The content X3 is reproduced by decoding the content.

  By this reproduction, the designated content X3 is output from the display device 100 connected to the recording / reproducing device 2. The reproduction in this step S14b reproduces the content X3 obtained by decrypting the content X2 stored in the optical disc 1, so that the data broadcast information 17 and the caption information 18 are lost as compared with the content X1 stored in the HDD 6. Video with poor image quality and sound quality will be played.

  Note that the case where the corresponding disc identification information DI does not exist in the storage information management unit 5 includes the case where the recording / reproducing apparatus 2 does not store and the case where the recording / reproducing apparatus 2 performs storage. This is the case after the X1 move or when the content X1 is deleted from the HDD 6 by the user.

  On the other hand, when it is determined that the disc identification information DI of the optical disc 1 recognized by the playback discriminating unit 9 in the ODD 8 exists in the storage information management unit 5 (Yes in step S13), the playback discriminating unit 9 determines the content identification information for which playback has been instructed. It is determined whether or not the CI exists in the stored information management unit 5 (step S15).

  As a result, when the reproduction determination unit 9 determines that the content identification information CI instructed to be reproduced does not exist in the stored information management unit 5 (No in step S15), the reproduction determination unit 9 notifies the optical disc reproduction unit 11 to that effect. A notification is sent out (step S16a). The optical disc reproducing unit 11 receives the notification that the disc identification information DI of the optical disc 1 does not exist from the reproduction discriminating unit 9, and reproduces the content in the optical disc 1 in the same manner as the processing in step S14b described above (step S16b). .

  On the other hand, when the reproduction determination unit 9 determines that the content identification information CI instructed to be reproduced exists in the stored information management unit 5 (Yes in step S15), the reproduction determination unit 9 notifies the HDD reproduction unit 10 of that fact. It is sent out (step S17a). The HDD playback unit 10 receives a notification that the content identification information CI instructed to be played back from the playback determination unit 9 exists in the stored information management unit 5, and decrypts the content X 1 in the HDD 6 using this notification as a trigger. The content X is reproduced (step S17b).

  By reproducing the content X1, the designated content X is output from the display device 100 connected to the recording / reproducing device 2. Although the reproduction operation in the HDD reproduction unit 10 is a known technique and will not be described in detail, the reproduction-instructed content X1 stored in the HDD 6 is read and the first key 14 stored in the recording information management unit 5 is read. Is decoded and returned to the content X, and the content X is reproduced and displayed. Therefore, it is possible to reproduce high-quality video / audio with data broadcast information 17 and caption information 18 included in the digital broadcast.

  In addition, even when a plurality of contents are stored on the optical disc 1 by determining the content identification information CI instructed to be reproduced, the content instructed to be reproduced can be reproduced and displayed by the HDD reproducing unit 10. For example, as shown in FIG. 3, the reproduction instruction is given even when the content identification information CI is “C” and “D” are stored in the optical disc 1 whose disc identification information DI is “γ”. By determining the content identification information CI, the content instructed to be reproduced can be reproduced by the HDD reproduction unit 10.

  As described above, by using the recording / reproducing apparatus 2 in the embodiment of the present invention, even when a reproduction instruction is given to the copy content (content X2) stored in the optical disc 1, If the original content (content X1) as the source of extraction is stored in the content X1, the content X1 (with data broadcast information 17 and subtitle information 18 included in the digital broadcast and high quality is maintained without continuing to mount the optical disc 1). Video and audio).

  In the present embodiment, it has been described that the display device 100 is provided separately from the recording / reproducing device 2, but the recording / reproducing device 2 itself may have the display device 100.

(Modification of the embodiment of the present invention)
Below, the modification of embodiment of this invention is demonstrated. The above-described recording / reproducing apparatus 2 has been described as having a built-in ODD 8. However, as in this modification described below, the ODD 8 is an external device, and the recording / reproducing apparatus 2 is a USB (Universal Serial Bus) or the like. You may connect via.

  FIG. 6 is a flowchart showing the reproduction of the recording / reproducing apparatus 2 in the modification of the embodiment of the present invention. In the flowchart of FIG. 6, the same steps as those of FIG. 5 are denoted by the same reference numerals.

  When the ODD 8 is separate from the recording / reproducing apparatus 2 and connected via the USB, the reproduction determining unit 9 first determines whether the ODD 8 is connected to the USB (step S10).

  As a result, when it is determined that the ODD 8 is not connected to the USB (No in step S10), the subsequent processing is not performed until it is determined that the ODD 8 is connected to the USB.

  On the other hand, when it is determined that the ODD 8 is connected to the USB (Yes in step S10), the ODD 8 determines whether or not the optical disk 1 is mounted on the own apparatus (step S11). Steps after step S11 are the same as those in the present embodiment described above.

  As described above, also in the modified example of the embodiment of the present invention, even when a reproduction instruction is given to the copy content (content X2) stored in the optical disc 1, it is extracted in the own device. When a certain original content (content X1) is stored, the content X1 (with data broadcast information 17 and subtitle information 18 included in the digital broadcast and high-quality video / audio) without continuing to mount the optical disc 1 Can be watched.

  It is desirable that the storage device incorporated in the storage / reproduction device 2 has a configuration in which the reproduction speed is higher than that of a separate copy destination storage device. That is, according to the embodiment and the modification of the present invention, when the original content is reproduced by the storage device incorporated in the recording / reproducing apparatus 2, a high-speed reproduction operation is possible and the usability is further improved.

  Further, as the capacity of the HDD 6 increases, it becomes possible to store a large amount of content, but it is difficult for the user to grasp all the content stored on the HDD 6. According to the present embodiment and the modification thereof, the original content (included in the digital broadcast) on the HDD 6 can be simply inserted by inserting the duplicated optical disc 1 without having to search for the original content (content X1) on the HDD 6. High-quality video / audio with data broadcast information 17 and caption information 18 can be reproduced.

  Further, when the optical disc 1 is loaded and the reproduction of the original content on the HDD 6 is started, the optical disc 1 can be removed. Therefore, the copy content (content X2) can be played back on the optical disc 1 on other recording / playback apparatuses, which is highly convenient.

  In the above description, the content X is transmitted from the broadcast station 12, but a web server or the like that distributes moving images may be used as a supply source of the content X.

The conceptual diagram of the recording / reproducing apparatus in embodiment of this invention. The figure which showed the functional block of the recording / reproducing apparatus in embodiment of this invention. The example of the conceptual diagram of the information management in the memory | storage information management part in embodiment of this invention. The figure which showed the information content of the content memorize | stored when the memory | storage function in the recording / reproducing apparatus in embodiment of this invention and a duplication function are used. The flowchart which showed reproduction | regeneration of the recording / reproducing apparatus in embodiment of this invention. The flowchart which showed reproduction | regeneration of the recording / reproducing apparatus in the modification of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk 2 Recording / reproducing apparatus 3 Broadcast receiving part 4 Storage part 5 Storage information management part 6 HDD
7 Duplicator 8 ODD
9 Playback discriminating unit 10 HDD playback unit 11 Optical disc playback unit 12 Broadcast station 13 Antenna 14 First key 15 Second key 16a Video information 16b encrypted with the first key Video encoded with the second key Information 17 Data broadcast information encrypted with first key 18 Caption information 100 encrypted with first key Display device X Original content X1 Content X2 encrypted with first key Coded with second key Content CC copy control information CI Content identification information DI Disc identification information FN File name obtained by decrypting converted content X3 X2

Claims (6)

Receiving means for receiving the first content in digital form;
First storage means for storing the first content received by the receiving means in the own apparatus using a first key unique to the own apparatus;
The second content obtained by extracting a predetermined type of information from the first content stored by the first storage means is stored in a storage medium separate from the own device, and a second content unique to the storage medium is stored. Copy means for storing in the storage medium using a key;
Second storage means for storing the identification information of the first content and the identification information of the storage medium in association with each other when the second content is stored in the recording medium by the copying means When,
When a reproduction instruction is given for the second content, the second reproduction instruction is made using the identification information of the first content and the identification information of the storage medium stored by the second storage means. If it is determined whether or not the first content from which the content is extracted is stored in the own device, and if it is determined that the first content is stored in the own device, A recording / reproducing apparatus comprising: reproducing means for reproducing the first content stored in the own apparatus using the first key of the own apparatus.   The recording / reproducing apparatus according to claim 1, wherein the copying unit performs storage in accordance with a DVD-VR (Digital Versatile Disk Video Recording) standard.   3. The recording / reproducing apparatus according to claim 1, wherein the device that performs storage in the device itself is a hard disk, and the storage medium is an optical disk. The received first content in digital format is stored in the own device using a first key unique to the device,
When a copy instruction is given, the identification information of the first content and the identification information of the copy destination storage medium that is separate from the own device are associated with each other and stored in the own device, and the first Second content obtained by extracting predetermined information from the content is stored in the storage medium using a second key unique to the storage medium,
When a reproduction instruction is given for the second content, the second instruction is made using the identification information of the first content and the identification information of the storage medium stored in the device. If it is determined whether or not the first content from which the content is extracted is stored in the own device, and it is determined that the first content is stored in the own device, A control method for a recording / reproducing apparatus, wherein the first content stored in the own apparatus is reproduced using the first key of the own apparatus.   5. The recording / reproducing apparatus control method according to claim 4, wherein the recording medium is stored in accordance with the DVD-VR standard.   6. The method for controlling a recording / reproducing apparatus according to claim 4, wherein the device that performs storage in the device itself is a hard disk, and the storage medium is an optical disk.

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