JP4987741B2 - Recording apparatus and recording method - Google Patents

Description

The present invention relates to a recording apparatus and a recording method .

  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.

  By the way, in the apparatus configured to record the received content data in the built-in recording device and perform various digital copies such as multiple times within one generation from the recording medium, the user can It is important to be able to easily grasp the information required when copying (duplicating) data.

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 a user performs copying.

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: manage replicable number of content data to be recorded, and management means for subtracting the allowable number of times of copying of the content data with the duplicate by the duplication unit, the content data recorded in the recording means shows a其s icon Display screen creation means for creating a list display screen in which the shape of the icon is changed according to the number of times the corresponding content data can be copied, and the icons arranged on the list display screen are displayed as thumbnail images. The number of times the content data corresponding to the icon is duplicated. And the display screen creating means displays the area of the peripheral region smaller as the number of times that the content data corresponding to the icon can be copied is smaller, and the number of times that copying is possible is limited. If you reach the number, characterized in that it does not display the peripheral region.

ADVANTAGE OF THE INVENTION According to this invention, the recording device and recording method which improved the convenience at the time of a user copying can be provided.

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 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 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 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 the content data recorded in 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 times that can be copied later is stored as the number of times that copying is possible.

Copyable number information managed by the copy number management unit 120 will be briefly described with reference to FIG.
The copy number management unit 120 according to the present embodiment includes not only the list of content data stored in the HDD unit 116 and the number of times that can be copied, but also the broadcast time and channel when the program related to the content data is broadcast as the copyable number information. Various information such as these are also stored together.

  More specifically, in the example of FIG. 2, for example, the title “Tetsuko's Room”, broadcast time December 23 (Sunday) 15: 00-15: 45, content obtained by recording a 10-channel program Information indicating that the remaining number of copies is 9 is managed by the copy count management unit 120 as the copy count information.

  In addition, in the example of FIG. 2, five content data having the titles “F1 relay”, “From cars in the world”, “Mysterious discovery”, “Galileo detective”, “Walk Kyoto” are also stored in the HDD unit 116 together. It can be seen that the number of copies that can be made at the present time is 4, 8, 2, 0, and 9 times, and information such as the broadcast time of the program related to each content data is also managed. .

  The possible number of copies 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 sufficiently protect the copyright, it is desirable to manage the copyable number of times information by encryption.

  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 recording medium as the copy destination, and then records it on the recording medium D.

  In this embodiment, as another recording medium, for example, an optical disc D such as a DVD (Digital Versatile Disk) or an HD DVD [KH1] (High Definition DVD) that is detachable from the digital television broadcast receiving apparatus 100. It is assumed that the recording / reproducing apparatus is externally connected to the digital television broadcast receiving apparatus 100 and incorporates, for example, an HDD.

  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 the 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 Transmission) on the input content. It functions to perform encryption processing conforming to the Content Protocol, and when transmitted to an external recording / reproducing device via an IP (Internet Protocol) such as Ethernet (registered trademark), the encryption conforms to the DTCP-IP. It functions to apply the 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 S601), the GUI processing unit 111 creates a content list screen as shown in FIG. (S602). 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. Further, for the icon 31 selected by the cursor 32, a balloon 33 is displayed to display a message indicating the copyright protection mode and the number of possible copies (S603). The content list display screen will be described below with reference to FIG.

  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, six content data icons 31 having titles of “Tetsuko's Room”, “F1 Relay”, “From the World's Car”, “Walking Kyoto”, “Galileo Detective”, and “Mysterious Discovery” are created. . In addition, the cursor 32 is also displayed, and the user can select one icon 31 by moving the cursor 32 up and down and left and right by an operation performed by the user (in the example of FIG. 4, “ F1 relay "icon is selected).

  Furthermore, in the example of the content list display screen 300 in FIG. 4, the balloon 33 is displayed for the icon 31 selected with the cursor 32. The balloon 33 can display a message indicating the copyright protection mode of the content data corresponding to the icon 31 selected by the cursor 32 and the number of times that the data can be copied. For example, FIG. 4 shows that the copyright protection form of the content data is “copying with limited number of copies” and that the remaining number of copies is four.

The shape of the icon 31 will be described in detail with reference to FIG. FIG. 5 is a diagram showing icons 31 arranged on the content list display screen 300.
The icon 31 includes a thumbnail image 31a, a peripheral image 31b, and content information 31c. 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 peripheral image 31b is an image arranged adjacent to the thumbnail image 31a, and has a shape that allows the thumbnail image 31a and the peripheral image 31b to be seen in a three-dimensional manner. The peripheral image 31b changes according to the number of times of copying that can be managed by the copy number management unit 120, and more specifically, the number of times of copying set in the content data corresponding to the icon 31. Accordingly, the size (particularly, the width d in the figure) changes. For example, in the case of content data of a program that was initially set for dubbing 10 and broadcasted, the size of the peripheral image 31b (that is, the width of d) when the number of copies that can be made immediately after recording is nine. After the ninth copy is completed, the size of the peripheral image 31b (that is, the width of d) is made the smallest (or the peripheral image 31b is not displayed). Thus, by changing the image according to the number of times of copying, the user can intuitively grasp the number of times of copying.

  The content information 31c describes information such as a title and a broadcast time of a program related to the content data as text data. By displaying such content information 31c, the user can grasp what program is recorded content data.

  Returning to FIG. 3 again, after the content list display screen 300 is displayed, if the user moves the cursor 32 by an operation input using an input device such as a remote controller (Yes in S604), the display is performed before the cursor is moved. The display of the balloon 33 is stopped, and the balloon 33 is displayed for the newly selected icon 31 to indicate the number of times that copying is possible (S603).

  When the user performs an operation other than the cursor movement (No in S604), processing corresponding to the operation, for example, content data reproduction processing or replication processing is performed, and the processing ends (S605).

  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 content data (corresponding icon 31) is selected on the content list display screen 300 and a copy is requested by the user (Yes in S501), the control unit 150 is set to the content data. An inquiry is made to the copy number management unit 120 as to whether or not the number of possible copies is 1 or more (S502). If the number of possible copies is 1 or more (Yes in S502), the control unit 150 reads the content data from the HDD unit 116, passes through the decryption unit 122 and the encryption unit 124, and then the disk drive unit 126 or digital I / F unit. The data is output to 128, and the replication process is performed (S503). If the copying process is successful (Yes in S504), the copy count management unit 120 subtracts 1 from the number of times this content data can be copied (S505).

  If the number of possible copies set in the content data the user has instructed to copy is 0 (that is, NoMoreCopy state), or if the copy process has failed (No in S504), the GUI processing unit 111 An error message is created and displayed on the display unit 112 (S506).

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 the above example, only the case where there is a limit on the number of times of copying is shown, but as shown in FIG. 7, by copying the peripheral portion of the peripheral image 31b in a blurred manner, copy-free (unlimited copying is possible) May be shown.

  Hereinafter, other embodiments will be described. FIG. 8 is a diagram showing a second form of the icon 31. Also in the example of FIG. 8, the icon 31 is the same as that of FIG. 5 in that the icon 31 includes a thumbnail image 31a, a peripheral image 31b, and content information 31c. However, the example of FIG. 8 is different from the example of FIG. 5 in that the peripheral image 31b is created based on the thumbnail image 31a.

  In the example of FIG. 8, four thumbnail images 31 a are stacked, and a part of the thumbnail images that come below constitutes the peripheral image 31 b. Four of the thumbnail images 31a that are superimposed correspond to the number of times that the content data corresponding to the icon 31 can be copied four times. In this way, by associating the number of thumbnail images with the number of times of copying, the user can directly grasp the number of times of copying.

  In the above-described embodiment, the number of copies that can be copied is managed for the entire content data. However, this may be managed for each section. For example, when only the scene of a favorite artist singing in a song program is copied (copied), if the number of times that copying is possible is managed for each section, the number of times that copying is possible for other parts that are not copied The decrease can be avoided, and the convenience for the user is improved. An embodiment in which the possible number of copies is managed for each category will be described with reference to FIGS.

  FIG. 9 is a diagram illustrating an example of the shape of the icon 31 in the case where the possible number of copies is managed for each section. The peripheral portion 31b is partially cut away to provide a section having a width d1 and a section having a width d2. As a result, the user can intuitively grasp that the number of times that the partial section can be copied is smaller than others.

  Furthermore, if this icon 31 is selected with the cursor 32, the balloon 33 displays "All-parts copyable number: 2 times" "Partial copyable number: 4 times", so that the user has more detailed information. You will be able to [KH2]

An example of the number of times that copying can be performed by the copy number management unit 120 in such an embodiment will be described with reference to FIG.
In the example of the copyable number information in FIG. 10, time information from the start position and the number of copies that can be made in that section are managed. In the example of FIG. 10, the number of possible copies in the section from time “00:00:00” to time “01:34:38” is four times, and from time “01:34:38” to “02:03:25”. The number of times that copying is possible is 2 times, and the number of times that copying is possible from time “02:03:25” to the last is 4 times. When duplicating only a certain section, the copy number management unit 120 reduces the number of times that can be copied only for that section.

  In the example of FIG. 10, management is performed according to time, but the present invention is not limited to this. For example, management may be performed based on the data amount from the start (number of bytes from the start position, etc.), chapters, and the like.

  As described above, according to the present embodiment, when the content list display screen 300 is displayed, content data that can be copied with a limited number of times is displayed three-dimensionally and given depth. Thus, it is possible to easily grasp the copyright protection form and the number of times that copying is possible.

Also, by showing the number of times that copying is possible in conjunction with the peripheral image 31b, the number of times can be shown to the user in a relatively small area, and it becomes easier to visually grasp.
Furthermore, for content data with no limit on the number of copies (copy-free), the user can grasp that there is no limit on the number of copies by blurring the depth direction and displaying the content without limitation. .

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 broadcast receiver which concerns on Example 1 of this invention displays. The figure which shows the example of the icon which the digital television broadcast receiver which concerns on Example 1 of this invention displays. The figure which shows the flow of a process when the digital television broadcast receiver which concerns on Example 1 of this invention performs a duplication process. The figure which shows the example of the icon which the digital television broadcast receiver which concerns on Example 1 of this invention displays. The figure which shows the example of the icon which the digital television broadcast receiver which concerns on other embodiment of this invention displays. The figure which shows the example of the icon which the digital television broadcast receiver which concerns on other embodiment of this invention displays. The figure which shows the example of the copy possible number information which the digital television broadcast receiver which concerns on other embodiment of this invention manages.

Explanation of symbols

31 ... Icon 31a ... Thumbnail image 31b ... Peripheral image 31c ... Text information 32 ... Cursor 33 ... Callout 100 ... Digital television broadcast receiver 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 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

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;
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;
The content data recorded in the recording means shows a其s icon, depending on the allowable number of times of copying of the corresponding content data and a display screen creation means for creating a list display screen of changing the shape of the icon,
The icons arranged on the list display screen include a thumbnail image area in which thumbnail images are displayed, and a peripheral area that is adjacent to the thumbnail image and changes in size according to the number of times content data corresponding to the icon is copied. And
The display screen creating means
The area of the peripheral region is displayed smaller as the number of times that the content data corresponding to the icon can be copied is smaller, and the peripheral region is not displayed when the number of times of duplication reaches the limit number. Recording device. The management means manages the number of times that copying is possible for each section of content data stored in the storage means,
  The display screen creating means changes an image of the peripheral area among icons corresponding to the content data when a part of the content data has a different number of times of duplication from another section.
The recording apparatus according to claim 1. The display screen creation means displays a cursor for selecting an icon on the list display screen,
The display screen creating means, the allowable number of times of copying of the content data corresponding to the icon selected by the cursor, the recording apparatus according to claim 1 or claim 2, wherein the displaying the list display screen. 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 the number of duplication times of content data recorded by the recording means, and the duplication means The management means for subtracting the number of times that the content data can be copied in accordance with the copying by means of, and the content data recorded in the recording means are shown as icons, respectively, and the shape of the icon is determined according to the number of times that the corresponding content data can be copied A recording method in a recording apparatus comprising a display screen creating means for creating a changed list display screen,
The icons arranged on the list display screen include a thumbnail image area in which thumbnail images are displayed, and a peripheral area that is adjacent to the thumbnail image and changes in size according to the number of times content data corresponding to the icon is copied. And
The area of the peripheral region is displayed smaller as the number of times that the content data corresponding to the icon can be copied is smaller, and the peripheral region is not displayed when the number of times of duplication reaches the limit number. Recording method. The management means manages the number of times that copying is possible for each section of content data stored in the storage means,
  The display screen creating means changes an image of the peripheral area among icons corresponding to the content data when a part of the content data has a different number of times of duplication from another section.
The recording method according to claim 4.

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