JP2009259321A - Recording device and recording method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording device and a recording method in which convenience when a user performs processing for recorded content data is improved. <P>SOLUTION: The device includes an HDD part 116 for recording content data in which the duplicatable number of times is limited, a disk drive part 126 duplicating content data recorded by the HDD part 116, and a number of times of duplication management part 120 which manages the duplicatable number of times of the content data recorded by the HDD part 116 and in which the duplicatable number of times of the content data is subtracted as duplication by a disk drive 126, the number of times of duplication management part 120 performs management of content data in accordance with the duplicatable number of times of content data. Thereby, requirement for determining how processing is to be performed for content data is made less for the user in accordance with the residual duplicatable number of times, convenience of the user can be improved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a recording apparatus and a recording method, and more particularly to a recording apparatus and a recording method for managing recorded content data.

  In recent years, digitization of television broadcasting has been promoted. For example, in Japan, not only satellite digital broadcasting such as BS (Broadcasting Satellite) digital broadcasting and 110-degree CS (Communication Satellite) digital broadcasting but also terrestrial digital broadcasting has been started.

  In such digital broadcasting, from the viewpoint of copyright protection, a copy-prohibited form in which digital copying (duplication) is not permitted at all for the content to be broadcast, or one-generation digital copying is permitted. The so-called copy-once copy restriction is widely performed.

  For this reason, in a recording apparatus having a digital broadcast receiving function for receiving a digital broadcast, when a program with copy-once restrictions is received and content data obtained thereby is recorded on a predetermined recording medium, the recording medium It is impossible to digitally copy the content data recorded on the other recording media.

  It should be noted that the content data subjected to the copy-once restriction can be transferred to another recording medium by moving instead of copying after being recorded on a predetermined recording medium. That is, the content data recorded on the recording medium serving as the recording source is processed so that it cannot be reproduced from the recording medium serving as the recording source after being written on the recording medium serving as the recording destination.

Patent Document 1 is an information recording medium for recording information and copyright information indicating a copyright relating to information, and the copyright information includes reproduction restriction information for restricting reproduction of information, The playback restriction information includes the time during which information playback is permitted, the time limit during which information playback is permitted, the number of playbacks during which information playback is permitted, the period during which playback of information from the first playback is permitted, By showing the password at the time of playback, the playback quality at the time of playback of information, and the area where playback of the information recording medium is permitted, content copying restrictions, playback restrictions, and editing restrictions based on copyright are realized An information recording medium is disclosed.
JP 2004-5939 A

  On the other hand, for a digital broadcast receiving apparatus of a type incorporating a recording medium such as an HDD (Hard Disk Drive), for example, content data received and recorded on the recording medium is transferred from the recording medium to another recording medium. A policy has been proposed and is currently under review that allows multiple digital copies, each limited to a single generation.

  By the way, in the case of an apparatus configured to record the received content data in the built-in recording device and perform digital copying a plurality of times from the recording medium for only one generation, the number of times that the copy can be performed is Therefore, it is necessary for the user to determine what processing should or should not be performed on the content data according to the remaining number of times that can be copied. The burden is heavy.

  Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a recording apparatus and a recording method that improve convenience when processing content data recorded by a user. To do.

  The present invention manages a duplicating number of content data recorded by a recording unit for recording content data with a limited number of duplication times, a duplicating unit for duplicating content data recorded by the recording unit, and a duplication number Management means for subtracting the number of times that the content data can be copied along with copying by the means, and setting means for setting the processing for the content data recorded by the recording means according to the number of times that the content data can be managed managed by the management means And a recording apparatus.

  Also, the present invention records content data with a limited number of times of duplication on a recording medium, duplicates the content data recorded on the recording medium, and manages the number of times the content data recorded on the recording medium can be duplicated Along with the copying of the content data recorded on the recording medium, the number of times that the content data can be copied is subtracted, and processing for the content data recorded on the recording medium is set according to the number of times the content data can be copied. This is a recording method.

  According to the recording apparatus and the recording method of the present invention, it is possible to improve convenience when the user processes the recorded content data.

  The recording apparatus of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows a television broadcast receiving apparatus 100 described in this embodiment.

  As shown in FIG. 1, a digital broadcast signal received by an antenna 102 is supplied to a digital tuner unit 104 via an input terminal (not shown), and a broadcast signal of a desired channel is selected by the digital tuner unit 104.

  The broadcast signal selected by the digital tuner unit 104 is supplied to the decryption unit 106 and descrambled, and then supplied to the decryption unit 108 for decryption. The digital signal output from the decoding unit 108 is supplied to the graphic processing unit 110, and an OSD (On Screen Display) signal indicating a GUI such as a list display screen of content data output from the GUI (Graphical User Interface) processing unit 111. Is superimposed on this digital signal and then used for video display on the display unit 112. The digital signal decoded and output by the decoding unit 108 includes not only a video signal but also an audio signal, and is also used for audio reproduction by a speaker (not shown).

  Further, the content data that has been decrypted (descrambled) by the decryption unit 106 is subjected to local encryption processing by the encryption unit 114 and then incorporated in the digital television broadcast receiver 100. The data is supplied to the HDD 116 and recorded. In this case, for the content data instructed to be recorded in the HDD unit 116, the duplicatable number extracting unit 118 sets the duplicatable number of times set in the content data (for example, once-recorded duplication (copy)) Copy once that cannot be copied, dubbing 10 that can be copied 9 copies only for one generation, copy free that can be copied unlimitedly, etc.), and the number of times that the copy can be made is associated with each content data. Managed by the management unit 120.

  When it is requested to copy the content data recorded on the HDD unit 116 to another recording medium, the copy number management unit 120 subtracts 1 from the copyable number of the content data managed by itself and subtracts it. The number of subsequent duplication times is stored as the duplication frequency information.

  When the content data recorded in the HDD unit 116 is copied (copied) to another recording medium, the content data is read by the HDD unit 116, the local encryption is decrypted by the decryption unit 122, and then the encryption unit 124 After the encryption processing corresponding to the copy destination recording medium is performed, the data is recorded on the recording medium D.

  In this embodiment, as other recording media, an optical disc D such as a DVD (Digital Versatile Disk) that can be attached to and detached from the digital television broadcast receiving device 100, and the digital television broadcast receiving device 100 externally. For example, a connected recording / reproducing apparatus including an HDD or the like is assumed.

  For example, when a DVD is designated as a copy destination recording medium, the encryption unit 124 performs an encryption process in accordance with CPRM (Content Protection for Recordable Media) on the input content data. When an optical disc that complies with other standards is designated as a recording medium as a duplication destination, it functions to perform an encryption process that complies with, for example, AACS (Advanced Access Control System). Also, when content data is transmitted to an external recording / playback apparatus in a format compliant with the IEEE (Institut of Electrical and Electronics Engineers) 1394 standard, the encryption unit 124 performs DTCP (Digital It functions to perform encryption processing conforming to Transmission Content Protection) and conforms to DTCP-IP when transmitted to an external recording / playback device via IP (Internet Protocol) such as Ethernet (registered trademark). Functions to perform encryption processing.

  Then, the content data encrypted by the encryption unit 124 is supplied to the disk drive unit 126 so as to be recorded on the optical disk D loaded therein. The content data encrypted by the encryption unit 124 is converted into a format compliant with a digital signal transmission standard such as IEEE 1394 by a digital I / F (Interface) unit 128 and then transferred to an external recording / playback apparatus. Supplied and recorded.

  Further, the content data recorded in the HDD unit 116 is subjected to the TS conversion by the code conversion unit 130 according to the number of times that it can be copied after the local decryption unit 122 is decrypted based on the control by the control unit 150. -Automatic format conversion to AVC format and PS format. The content data that has been converted to the TS-AVC format or the PS format is supplied to the HDD 116 via the encryption unit 114 and recorded. The copy number management unit 120 subtracts 1 from the copyable number of times of the content data managed by itself, and stores the copyable number after subtraction as copyable number information.

  Further, the content data recorded in the HDD unit 116 is permitted to be edited by a user operation according to the number of times that the content data can be copied based on the control by the control unit 150. The editing unit 140 edits content data in accordance with a user operation. The content data edited by the editing unit 140 is supplied to the HDD 116 unit via the encryption unit 114 and recorded. The copy number management unit 120 subtracts 1 from the copyable number of times of the content data managed by itself, and stores the copyable number after subtraction as copyable number information.

  The duplication count information managed by the duplication count management unit 120 will be briefly described with reference to FIG.

  The duplication count management unit 120 of the present embodiment includes a list of content data stored in the HDD unit 116 as the duplicatable count information, and the broadcast time and channel in which the program related to the content data is broadcast, as well as the possible duplication count Various information such as these are also stored together.

  Furthermore, as shown in FIG. 2, the copy count management unit 120 also stores content data management methods corresponding to the number of copyable times of the content data stored in the HDD unit 116 as copyable count information. . The input unit 160 configured by a remote controller or the like sets a content data management method according to the number of times that the content data can be copied by an operation by the user. If the user does not set this, a default value may be set.

  The number of duplication times managed by the duplication number management unit 120 is described as a configuration different from the HDD unit 116 in the example of FIG. 1, but may be stored in the HDD unit 116. However, in order to prevent tampering by the user and sufficiently protect the copyright, it is desirable to manage the copyable number of times information by encryption.

  In the digital television broadcast receiving apparatus 100 configured as described above, the main processing operation will be described below. FIG. 3 is a flowchart showing the flow of processing when performing duplication processing, and it is assumed that the management method shown in FIG. 2 is set as the content data management method according to the number of times of duplication.

  As shown in FIG. 2, when the content is broadcast and the recording of the content data to the HDD unit 116 is completed, the number of times that copying is possible is nine. Here, when execution of the code conversion process is set as a content data management method according to the number of times that can be copied nine times, as shown in FIG. 3, the encoding conversion unit 130 performs the code conversion process. This is executed (S301), and the copy number management unit 120 subtracts 1 from the copyable number of times of the content data, and stores the copyable number after the subtraction as copyable number information (S302).

  In the example of FIG. 2, “automatic format conversion to TS-AVC” is specified in the management method according to the number of times that can be copied nine times, so that the control unit 150 reads the content data from the HDD unit 116, Decryption is performed by the decryption unit 122, and format conversion is further performed in the code conversion unit 130 into the “TS-AVC” format. Thereafter, the content data is encrypted by the encryption unit 114 and recorded in the HDD unit 116. The recorded content data is managed as separate content. The content data consumes the number of times of duplication 1 and is copied (copied) in this “TS-AVC” format, and the number of times of duplication is 8.

  Next, since “automatic format conversion to PS” is designated as a management method according to the number of times that can be replicated eight times, similarly, format conversion is performed to the “PS” format this time (S301). The possible number of times is 7 (S302).

  When the number of duplication times is 7, “editing permission, duplication (move) permission, deletion permission” is designated. This means that the content data can be edited, copied (moved: copied with moving the content data from the HDD unit 116), and deleted without restriction by a user operation. When copying (moving) is performed by a user operation (S303), 1 is subtracted from the number of times that copying is possible (S304).

  As described above, copying (copying) of content data is repeated, and when the number of times that copying is possible is four, “editing permission, copying (move) impossible, deletion not possible” is designated. This means that there is no restriction on the editing process of the content by a user operation, but copying (moving) or deletion is prohibited. However, duplication (movement) and deletion are possible after an operation for canceling the prohibition is performed. Even when the editing process or the copy (move) process is performed after the prohibition is canceled (S303), the number of times that the copy can be made is consumed and is reduced by 1 (S304).

  When the number of times of duplication is 1, the same designation as in the case of 9 times of duplication is performed, and automatic conversion to the “TS-AVC” format is performed (S301). This is a case where the remaining number of times of duplication is reduced and a format suitable for long-term storage is created.

  When the permitted number of times of duplication is zero, “editing is impossible, duplication (move) is impossible, deletion is not possible” is designated, and the user cannot perform these operations without an operation to cancel the prohibition. Since only one piece of content data remains at this time, it is possible to prevent the content data from being lost.

  As described above, according to the present embodiment, the copy count management unit 120 manages the content data according to the number of times that the content data can be copied. Therefore, it is less necessary to determine what processing should or should not be performed each time, and the convenience for the user to process the recorded content data is improved. It becomes possible.

  In addition, the copy count management unit 120 manages content data by converting the content data into another data format according to the number of times the content data can be copied. Each time, it is not necessary to convert the content data into another necessary data format.

  Furthermore, since the copy count management unit 120 manages content by permitting or not permitting deletion, duplication, and editing of content data according to the number of times the content data can be duplicated, the user remains The content data can be deleted, duplicated, and edited according to the number of times that data can be copied, and the content data can be prevented from being damaged.

  In addition, since the content data management method according to the number of times of duplication can be set by the user's operation on the input unit 160, the user can change the content data management method according to the usage situation. Is possible.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made.

It is a block diagram which shows the outline of the digital television broadcast receiver which concerns on embodiment. It is a figure which shows the example of the relationship between the frequency | count of the replication of the content which the digital television broadcast receiver which concerns on embodiment manages, and the management method. It is a flowchart which shows the flow of a process when the digital television broadcast receiver which concerns on embodiment performs a duplication process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Digital television broadcast receiver, 102 ... Antenna, 104 ... Digital tuner part, 106 ... Decryption part, 108 ... Decoding part, 110 ... Graphic processing part, 111 ... GUI processing part, 112 ... Display part, 114 ... Encryption 116: HDD unit, 118 ... Duplicatable number extraction unit, 120 ... Duplication number management unit, 122 ... Decryption unit, 124 ... Encryption unit, 126 ... Disk drive unit, 128 ... Digital I / F unit, 130 ... Code conversion unit, 140 ... Editing unit, 150 ... Control unit, 160 ... Input unit.

Claims (8)

Recording means for recording content data with a limited number of times of duplication;
Duplication means for duplicating content data recorded by the recording means;
Managing means for managing the number of times the content data recorded by the recording means can be copied, and subtracting the number of times the content data can be copied along with the copying by the copying means;
A recording apparatus comprising: setting means for setting a process for content data recorded by the recording means in accordance with the number of times content data managed by the management means can be copied. The setting means determines whether or not to permit copying accompanied by movement of content data from the recording means by the copying means and deletion of content data from the recording means according to the number of times content data can be copied. The recording apparatus according to claim 1, wherein the recording apparatus is set. Editing means for editing content data recorded by the recording means;
The recording apparatus according to claim 1, wherein the setting unit sets whether to permit editing of the content data by the editing unit according to the number of times the content data can be copied. Code conversion means for code-converting the content data recorded by the recording means into another data format;
The setting means performs setting for code-converting the content data recorded by the recording means into another data format by the code conversion means according to the number of times content data can be copied. 4. The recording apparatus according to any one of items 3. Record content data with a limited number of times of duplication on a recording medium,
Copy the content data recorded on the recording medium,
Managing the number of times the content data recorded on the recording medium can be copied, and subtracting the number of times the content data can be copied along with the copying of the content data recorded on the recording medium;
A recording method comprising: setting processing for content data recorded on the recording medium according to the number of times the content data can be copied. The content data may be copied according to the number of times that the content data can be copied, and whether or not copying with movement of the content data from the recording medium and deletion of the content data from the recording medium are permitted is set. 6. The recording method according to 5. 7. The recording method according to claim 5, wherein whether to permit editing of the content data is set according to the number of times the content data can be copied. The recording method according to any one of claims 5 to 7, wherein a setting is made to code-convert the content data into another data format in accordance with the number of times the content data can be copied.

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