JP5159327B2 - Recording device - Google Patents

Description

  The present invention relates to a recording apparatus.

  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 is not permitted at all for broadcast content, or so-called copy-once that permits digital copying for one generation only. It is widely practiced to apply copy restrictions in a form called

  For this reason, in a recording apparatus having a digital broadcast receiving function for receiving digital broadcasts, 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.

In Patent Document 1, when recording is requested for a program that is set to be unrecordable by the copy control information, together with information such as the program name of the designated program and the broadcast date and time, “the designated program is recorded ( It is disclosed that a warning message stating that “copying is not possible” is displayed.
JP 2007-165950 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 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 being considered that allows digital copying multiple times for each generation.

  However, such a method currently under consideration only considers managing the number of copies that can be made in one-to-one correspondence with the entire content data. For example, even when only a scene sung by a specific singer in a song program or the like is copied, the number of times that the entire content data can be copied is decremented by one.

  The present invention has been made in view of the above circumstances, and an object thereof is to improve the convenience of copying by a user while protecting the copyright of content data.

In order to achieve the above object, the recording apparatus of the present invention includes a recording unit that records content data with a limited number of times of duplication, a duplication unit that duplicates content data recorded by the recording unit, and the recording unit includes: The number of times that the content data to be recorded can be copied is managed for each section, and with the duplication by the duplicating means, the management means for subtracting the number of times that the copied section can be copied, and the section of the content data recorded in the recording means for each section Display screen creating means for creating a display screen indicating the number of times that copying is possible , wherein the display screen creating means has a time axis in a first direction and a second direction different from the first direction. A display screen showing the number of times of duplication possible for each section of the content data is created from the image showing the number of times of duplication.

  According to the present invention, it is possible to improve the convenience of copying by a user while protecting the copyright of 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.
A digital broadcast signal received by the 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 105 and subjected to descrambling, 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 is output from the GUI (Graphical User Interface) processing unit 111. The OSD (On Screen Display) indicating a GUI such as a list display screen of content data. After the signal is superimposed on this digital signal, it is 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 subjected to the decryption process (descrambling process) by the decryption unit 106 is subjected to the local encryption process by the encryption unit 114 and then incorporated in the digital television broadcast receiving apparatus 100. The data is supplied to the HDD unit 116 and recorded. In this case, for the content data instructed to be recorded in the HDD unit 116, the copyable number extraction unit 118 creates a copyable number of times set for the content data (for example, creates a copy after recording once). 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 can be copied is associated with each content data and the number of copies Managed by the management unit 120. When it is requested to copy (duplicate) 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. Then, the number of copies that can be made after subtraction is stored as information on the number of copies that can be made. In addition, when only a part of the copy is requested, the copy number management unit 120 according to the present embodiment subtracts only the copyable number of times for the section and does not subtract the copyable number of other sections. To do. In the following, the information on the number of copies that can be managed by the copyable number management unit 120 will be briefly described with reference to FIG.

  The copy number management unit 120 of this embodiment manages the number of times that can be copied associated with the content data stored in the HDD unit 116 as the number of times that the copy can be made. FIG. 2 is an example of the number of times that copying can be performed regarding a program broadcast from 1:00 to 2:54 on Friday, December 7, with the title “Strolling Kyoto”.

  In the example of FIG. 2, the number of times that the program can be copied is set for each section divided according to the time from the start position. Specifically, the number of possible copies in the section from the start position to 34 minutes and 38 seconds is 6 times, and the number of possible copies in the section from 34 minutes and 38 seconds to 40 minutes and 24 seconds is 5 times, 40 minutes and 24 seconds to 56 minutes. The number of possible copies for the section up to 10 seconds is 6, and the number of copies that can be copied from 56 minutes 10 seconds to 1 hour 10 minutes 13 seconds is 5 times, 1 hour 10 minutes 13 seconds to 1 hour 25 minutes 00 seconds can be copied The number of times of copying is 4 times, the number of times that can be copied from 1 hour 25:00 to 1 hour 45 minutes and 45 seconds is 0 times, and the number of times that copying is possible from 1 hour 45 minutes and 45 seconds to the end time (1 hour 54 minutes) is 6 times. Is set to

  Note that FIG. 2 shows only the number of times that one piece of content data can be copied, but the copy number management unit 120 can copy the number of copies of all content data stored in the HDD unit 116 that is copyright-protected. Information is managed.

  Note that the copyable number information managed by the copy 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 to sufficiently protect the copyright, it is desirable to manage the copyable frequency information by encrypting it.

  Returning to the description of FIG. 1 again, when the content data recorded on the HDD unit 116 is copied (replicated) to another recording medium, the content data is read by the HDD unit 116 and the local cipher is decrypted by the decryption unit 122. After that, the encryption unit 124 performs encryption processing corresponding to the copy destination recording medium, and then records it on the recording medium.

  In the present embodiment, as a recording medium, an optical disc D such as a DVD (Digital Versatile Disk) or an HD DVD (High Definition DVD) that can be attached to and detached from the digital television broadcast receiver 100, and a digital television broadcast. It is assumed that the recording / reproducing apparatus has a built-in HDD or the like that is externally connected to the receiving apparatus 100.

  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 HD DVD is designated as a copy destination recording medium, the encryption function conforms to AACS (Advanced Access Control System). When the content data is transmitted to an external recording / playback apparatus in a form 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 Protocol) 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.

In the digital television broadcast receiving apparatus 100 configured as described above, the main processing operation will be described below. FIG. 3 shows a flowchart summarizing the content list screen display processing.

  When the user makes a content list display request by operating a remote controller or the like (not shown) (Yes in S501), the GUI processing unit 111 creates a content list screen as shown in FIG. (S502). Here, the GUI processing unit 111 acquires information on the number of times that can be copied from the copy number management unit 120, creates an icon corresponding to each content data based on this information, and arranges it on the content list screen. Thereafter, when an operation such as icon selection is performed on the content list screen, processing such as duplication and reproduction is performed in accordance with the selected content data (S503).

Hereinafter, the content list display screen will be described with reference to FIGS. 4 and 5.
FIG. 4 is a diagram illustrating an example of a content list display screen created by the GUI processing unit 111 according to the present embodiment. In the example of FIG. 4, icons corresponding to each content data are created and arranged based on the copyable number information shown in the example of FIG. 2. More specifically, the content list display screen 30 of the present embodiment has “Tetsuko's Room”, “F1 Relay”, “From a World Car”, “Walking Kyoto”, “Galileo Detective”, and “Mysterious Discovery” as titles. Content data icons 31A to 31F are created and arranged. These icons can be selected by moving a cursor (not shown) up, down, left and right.

  The shape of the icon arranged on the content list display screen 30 in FIG. 4 will be described in detail with reference to FIG. FIG. 5 is a diagram showing icons 31 </ b> D arranged on the content list display screen 30.

  The icon 31D includes a thumbnail image 301, a copyable count image 302 indicating the copyable count for each section, a copyright protection format image 303 indicating a copyright protection format, and content information 304.

  The thumbnail image 31a is a still image extracted from the content data corresponding to the icon. By displaying such a thumbnail image 31a on the icon 31, the user can easily grasp the contents.

  The copyable number information image 302 is an image showing an overview of the number of copyable times for each section. In the example of the copyable count information 302 in FIG. 5, the horizontal axis (in the direction of arrow A in the figure) is the time axis direction (the left end corresponds to the content start position and the right end corresponds to the content end position), and the vertical axis (in the arrow B direction in the figure). ), The shape reflects the number of times that each section can be copied.

  The configuration of the copyable count image 302 is formed from the copyable count information shown in FIG. Specifically, the time length of the content is 1 hour 54 minutes, but the length in the vertical axis direction has a width of 6 times from the left end to the position of about 34 minutes 38 seconds / 1 hour 54 minutes, The length in the vertical axis direction to the position after that (34 minutes 38 seconds / 1 hour 54 minutes-40 minutes 24 seconds / 1 hour 54 minutes) has a width of 5 times shorter than that, and then (40 minutes 24 minutes) The length in the vertical axis direction to the position of (second / 1 hour 54 minutes-56 minutes 10 seconds / 1 hour 54 minutes) has a width of 6 times. The same applies to the subsequent sections.

  Managing the number of copies that can be made for each section allows the user to secure a greater number of copies that can be made (within the scope of copyright protection), but on the other hand, copying is possible. It becomes difficult to know the number of times. Therefore, as shown in FIG. 4 and FIG. 5, the user can intuitively grasp the number of copies that can be made for each section by indicating the number of copies that can be made for each section as the shape of the image. Further, in the case of a content list screen 30 that displays a large number of icons, the space that can be allocated to one content data is limited, and details of the number of times that copying can be performed (for example, a table format as shown in FIG. 2). Although it is difficult to show, by using an image, the user can be grasped in a smaller space.

  The copyright protection format image 303 is an image for informing the user of the copyright protection format. In the example of the icon 31D, the image is a rectangular image arranged adjacent to the copyable count image 301, and is filled with diagonal lines. In this way, when it is shaded, it can be shown that the program is broadcast in the copyright protection format of dubbing 10, for example. In addition, in the example of FIG. 4, the copyright protection format images 303 in the icons 31B and 31F are filled with white, and this allows the user to recognize that the copy is free. In the case of copy free, it is not necessary to mark the number of times that copying is possible, and therefore the number of times that copying is possible 302 is not marked on the icons 31B and 31F in FIG. In addition, if there is copy-once or content data in another copyright protection format, the color (painting method) or shape of the image may be sequentially changed according to the format.

In this embodiment, the image is shown as a rod-like image, but the present invention is not limited to this, and the copyright protection format may be shown as character information.
The content information 304 describes information such as a title and a broadcast program of a program related to the content data as text data. By displaying such content information 304, the user can grasp what program is recorded content data.

  Next, content data replication processing will be described with reference to FIG. FIG. 6 is a flowchart summarizing the flow of processing when copying content data.

  For example, when one piece of content data (corresponding icon) is selected on the content list display screen 300 and a copy is requested by the user and the copy process is started, the user first receives designation of a section to be copied (S601). . This designation method may be, for example, a method for designating the time of the start position and the end position, or the user may select a chapter.

  When a copy start request is received from the user after specifying the duplication section (Yes in S602), the copy count management unit 120 is inquired as to whether or not the number of duplication is possible for the entire designated section instructed for duplication. (S603). If the number of times that copying is possible is 1 or more for the entire section instructed to be duplicated (Yes in S603), the control unit 150 reads the content data from the HDD unit 116 and causes the decryption unit 122 and the encryption unit 124 to operate. Then, the data is output to the disk drive unit 126 or the digital I / F unit 128 to perform a duplication process (S604). If this duplication process is successful (Yes in S605), the copy count management unit 120 subtracts 1 from the possible copy count for the duplication section of this content data (S606).

  If the section of the content data instructed by the user includes a section where the set number of times of copying is 0 (that is, the state of NoMoreCopy), or if the copying process has failed (No in S605), The GUI processing unit 111 creates an error message and displays it on the display unit 112 (S607).

  By managing the number of times that copying is possible in this way, the copyright of the content data stored in the HDD unit 116 can be reliably protected. In addition, since the number of times that copying can be performed is managed for each section, the user can copy other sections even when only a section is copied, such as a scene where a favorite artist sings in a song program. Duplicates can be made without affecting the number of possible times.

  In the present embodiment, the case where the copyable count image 302 is displayed on the content list display screen 30 has been described. However, the present invention is not limited to this. For example, the duplicatable number of times image 302 may be displayed on a screen for instructing content duplication.

  In addition, by indicating the number of possible copies for each section as an image, it is possible to display the image with a relatively small area and to easily grasp it visually.

1 is a block diagram showing an outline of a digital television broadcast receiver according to Embodiment 1 of the present invention. The figure which shows the example of the number information of possible copies which the digital television broadcast receiver which concerns on Example 1 of this invention manages. The flowchart which shows the flow of a process when the digital television broadcast receiver which concerns on Example 1 of this invention displays a content list screen. The figure which shows the example of the content list screen which the digital television method transmission / reception apparatus which concerns on Example 1 of this invention displays. The figure which shows the example of the icon which the digital television method transmission / reception apparatus which concerns on Example 1 of this invention displays. The figure which shows the flow of a process when the digital television method transmission / reception apparatus which concerns on Example 1 of this invention performs a duplication process.

Explanation of symbols

30 ... Contents list screen 31A, 31B, 31C, 31D, 31E, 31F ... Icon 100 ... Digital television transmission / reception device 102 ... Antenna 104 ... Digital tuner unit 106 ... Decryption Unit 108 ... Decryption unit 110 ... Graphic processing unit 111 ... GUI processing unit 112 ... Display unit 114 ... Encryption unit 116 ... HDD unit 118 ... Copyable number extraction unit 120 ... Copy number management unit 122 ... Decryption unit 124 ... Encryption unit 126 ... Disk drive unit 128 ... Digital I / F unit 301 ... Thumbnail image 302 ... Number of copies allowed Image 303 ... Copyright protection format image 304 ... Text information

Claims (5)

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;
Management means for managing the number of times that the content data recorded by the recording means can be copied for each section, and subtracting the number of times that the copied section can be copied along with the copying by the copying means;
And a display screen creation means for creating a display screen showing the allowable number of times of copying of each section of the content data recorded in the recording means
The display screen creation means indicates the number of times that the content data can be replicated for each section of the content data using an image indicating the time axis in the first direction and the number of times that the content can be replicated in a second direction different from the first direction. A recording apparatus for creating a display screen . Before Stories second direction, the recording apparatus according to claim 1, wherein the a first direction and a direction substantially orthogonal. The display screen creating means creates a display screen in which an image indicating the number of times that the content data can be copied for each section of the content data is associated with the content data together with the copyright protection method of the content data. 2. The recording device according to 2. The display screen creation means creates the display screen shown as an icon associated with the content data recorded by the recording means,
4. The recording apparatus according to claim 3, wherein the number of times that the content data associated with each icon can be copied for each section is displayed on the display screen as an image. The recording apparatus according to claim 4, wherein the icon includes a thumbnail image of content data corresponding to the icon and an image indicating the number of times the content data can be copied for each section.

Images