JP2007334956A - Video recording device and information display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video recording device improved in convenience in dubbing processing and to provide an information display method. <P>SOLUTION: The video recording device determines existence of an non-trusted data which is not allowed to be dubbed into a 2nd medium with data protected by an AACS (Advanced Access Content System) from a 1st medium with data protected by a system except the AACS, and displays attribute information (for example, non-trusted icon) showing that it is not allowed to dub the data into the 2nd medium when the non-trusted data is present. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a video recording apparatus capable of recording and reproducing video and the like, and an information display method applied to the apparatus.

  In recent years, video recording apparatuses capable of recording and playing back video data of programs broadcast from broadcast stations on a hard disk or another optical disk have become widespread.

  In general, in such a video recording apparatus, the user can dubb the video data on the hard disk to another optical disc through a user interface, for example. However, individual video data stored in the hard disk may include data that is prohibited from being copied from the viewpoint of copyright protection.

As a technique for informing the user that dubbing is prohibited, for example, Patent Document 1 can be cited. This Patent Document 1 discloses that a prohibition mark is displayed beside a representative image of a title that cannot originally be a target of dubbing to a DVD due to a difference in color television broadcasting system.
Japanese Patent Laying-Open No. 2005-44400 (FIG. 4 etc.)

  By the way, AACS (Advanced Access Content System) has attracted attention as a technology for further improving the copyright protection function and convenience for contents. In the future, there may be cases in which video data cannot be dubbed from media not protected by AACS to media protected by AACS. If the user instructs dubbing without knowing this, the dubbing process may fail in the middle, and the dubbing destination optical disc (optical disc that can be recorded only once, such as HD DVD-R) may be wasted. Such a problem cannot be solved by the technique disclosed in Patent Document 1.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a video recording apparatus and an information display method with improved convenience in dubbing processing.

  A video recording apparatus according to the present invention is a video recording apparatus capable of recording and reproducing video data, and is based on AACS from a first medium on which data protection other than AACS (Advanced Access Content System) is applied. Means for determining the presence / absence of untrusted data that cannot be dubbed to a second medium with data protection; and dubbing the untrusted data to the second medium when the untrusted data exists. And a means for displaying attribute information indicating that it is impossible.

  The information display method according to the present invention is an information display method applied to a video recording apparatus capable of recording and reproducing video data, and data protection is performed by a method other than AACS (Advanced Access Content System). It is determined whether or not there is untrusted data that cannot be dubbed from the first medium to the second medium on which data protection by AACS is performed. If there is the untrusted data, the data is transferred to the second medium. Attribute information indicating that it is impossible to perform dubbing is displayed.

  Convenience in the dubbing process can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an example of the configuration of a recording / reproducing apparatus according to an embodiment of the present invention.

  The video recording apparatus 1 includes a recording / playback unit 10, a data processing unit 20, a video input unit 30, a video output unit 40, a recording control unit 60, a display control unit 70, a main control unit 50, and the like.

  The recording / reproducing unit 10 includes, for example, a hard disk recording device, and is provided with a hard disk drive unit (hereinafter, referred to as a hard disk drive unit) having a capacity capable of recording a video (program) transmitted from a broadcasting station as a television broadcast for about 100 hours. 12 (denoted as HDD), data (program) compressed according to the same standard as HDD 12 can be recorded, and data (program) can be taken out to the outside and brought into the recording medium such as an optical disc Data transfer for transferring compressed data (video content, that is, a program) between the optical disk drive unit 13 used for data recording and reproduction, and the HDD 12 and / or the optical disk drive unit 13 and the data processing unit 20 A control unit 11 is included.

  In the recording / reproducing unit 10, the digital signal compressed in the data processing unit 20 is sent to a predetermined recording area in the HDD 12 or the optical disc drive unit 13 via the data transfer control unit 11 according to an instruction from the user, for example. It is recorded on the set optical disc D. Of course, when there is a reproduction request, the data reproduced in response to the request is output to the data processing unit 20. The recording / reproducing unit 10 also has a function of executing a recording process and a reproducing process defined in AACS.

  The data processing unit 20 includes a data editing unit 21, an encoder 22, a decoder 23, an audio / video processing unit 24, and the like. The data (program) supplied from the video input unit 30 is compressed into a predetermined format, and then is recorded / reproduced. 10, the data output from the recording / reproducing unit 10 is decoded in accordance with the reproduction request, and is output to the video output unit 40. The data processing unit 20 also has a function of executing encryption processing, decryption processing, and the like defined in AACS.

  In the data editing unit 21, when the compressed data is transferred to the recording / reproducing unit 10, a classification for recording, for example, for a specified folder among an arbitrary number of folders (directories) (not shown). The program (data) to be recorded is instructed to be recorded, and “program name”, “movie” or “music” such as “genre identifier”, “artist (performer) name”, etc. Data specific items can be added.

  The encoder 22 is a device that encodes (compresses) data, and data (program) supplied via the video input unit 30 is compressed in accordance with a compression method (standard) and a compression rate specified in advance (encoder 22). Compressed). The encoder 22 may incorporate a known multiplexing unit.

  The decoder 23 is a device that decodes (decompresses) data, and decodes data (program) supplied from the recording / reproducing unit 10 by a decoding method (standard) corresponding to the compression method (standard) by the encoder 22. (Expand) and output to the video output unit 40. The decoder 23 may incorporate a known separation unit.

  In the audio / video processing unit 24, the video data decoded by the decoder 23 and the audio data (usually decoded independently of the video signal) are synthesized (output timings are matched). The data output to the video output unit 40 is combined with the operation screen display (OSD) generated by the OSD (On Screen Display) unit 54 by the audio / video processing unit 24 as necessary. The

  The video input unit 30 is, for example, an external input unit 31 that receives an input of an external video signal / input signal, for example, a BS / for receiving a program (data) provided through a broadcasting satellite (BS) or a communication satellite (CS). CS tuner unit 32, for example, a terrestrial tuner unit 33 for accepting public broadcasting from a broadcasting station, and a network controller 34 for accepting (viewable) data (programs) supplied from a distribution source via a network. Etc. The network controller 34 can be connected to, for example, a public communication network (telephone line), and can arbitrarily exchange data with the outside via the communication network.

  The external input unit 31, the BS / CS tuner unit 32, the terrestrial tuner unit 33, the network controller 34, and the like are connected to the selector unit 35 and are supplied to the encoder 22 (data processing unit 20) described above (data processing unit 20). (Program) is defined (by the selector unit 35) based on the number of titles (programs) that can be processed simultaneously by the encoder 22 or the capacity or transfer rate.

  The video output unit 40 receives the decoded signal (reproduced video and audio) output from the audio / video processing unit 24 (data processing unit 20) via the selector 41, the external output unit 42, and the I / F (interface 43). In addition, it includes a video / audio output terminal 44 for outputting to a television (monitor) M that is widely used in general, and the output of the l / F 43 is popular in, for example, personal computers (PCs), homes, companies, and the like. It can be used as a data transfer system that conforms to a specific protocol typified by a small-scale network and IEEE1394.

  The main control unit 50 includes a video recording unit 60 and a display control unit 70 described below in addition to the recording / reproducing unit 10, the data processing unit 20, the video input unit 30, and the video output unit 40 described above. Controls the operation of the recording apparatus 1, and includes a control bus 51 used for transmission of control signals between individual elements, an MPU (Main Processing Unit) 52 as a main control apparatus, and a work (cache) memory (RAM) 53. , An OSD (On Screen Display) unit 54, and MPU 52 firmware (or independently, although not shown), an initial program for operating the video recording apparatus 1 and operations corresponding to individual control commands And a ROM in which signal processing methods, communication procedures, and the like are recorded. Further, the MPU 52 can execute software such as an application and a driver defined in AACS as necessary.

  The recording control unit 60 includes, for example, a recording information control unit 61, a program guide generation unit 62, a recording reservation control unit 63, a task storage unit 64, and the like.

  In the recording information control unit 61, for example, an external server (information supply source) 101 (described later) and a video distribution destination (video supply organization accessible via the network (information supply source 101) are connected through a network. Recording reservation setting (input / cancellation (deletion)) and reservation information by the user based on electronic program guide information (Dynamic Electronic Program Guide, hereinafter referred to as D-EPG) provided by the In addition, it is independent of D-EPG, and the above-mentioned various information can be acquired from, for example, an EPG (Electronic Program Guide) superimposed on a broadcast wave together with video content. .

  In the program guide generating unit 62, a [reserved program list] defined by the EPG and the recording information control unit 61 acquired from the server 101 via a network or a communication line, or from an EPG display signal superimposed on a broadcast wave. In addition, the screen display is designed (generated) so that the display corresponding to the EPG, that is, the program guide can be displayed as the screen of the monitor device (television) connected to the video output unit 40.

  In the recording reservation control unit 63, for example, recording conditions such as the name of a program (data) to be recorded, its source, and date and time are held, and time (date and time) information is managed for actual recording. . Note that the recording reservation control unit 63 may include a timer (clock) controller (timer microcomputer) that can be shared with the display control unit 70 described below.

  The task storage unit 64 holds information on various tasks related to recording reservations and is referred to when necessary.

  The display control unit 70 displays, for example, the time and date on a clock unit provided on a display panel (not described in detail) of the video recording apparatus 1, the operating state of the apparatus, the presence or absence of recording reservation, the recording mode at the time of recording, and the like. The display unit 72 to be displayed, the operation unit 73 provided on the display panel (or a predetermined position of the apparatus 1), the display on the display unit 72, and the control command or input input by the user via the operation unit 73 A panel control unit 71 and the like for exchanging information are included.

  For example, a control command and input information input by the remote control terminal R are provided at a predetermined position of the operation unit 73 or the display unit 72 (not shown) in the video recording apparatus 1 of the present case shown in FIG. The data is received by the receiving unit and input to the main control unit 50 through the panel control unit 71. Of course, a signal (command) from the remote controller (terminal) R may be supplied to the main control unit 50 as it is via a dedicated receiving unit (not shown).

  The remote control terminal R specifies the recording destination and the dubbing destination, for example, the HDD 12 or the optical disc D (optical disc drive unit 13), and the video (program) already recorded when recording or dubbing (copying, moving) the video by the video recording device 1. ), Editing of the title or data specific item, switching of the video supply source, setting of reserved recording, etc., and various control commands and input of information to be input.

  The video recording apparatus 1 can be connected to a network (connection source) 101 connected via a network that can be connected via the network controller 34, for example, the widely used Internet. In the server (information supply source) 101, for example, a program information registration unit 111, a program information storage unit 112, a communication unit (communication control unit) 113, and the like are prepared. Note that the server 101 is connected to a broadcast station T or the like as a video supply source so as to be able to provide information, for example, directly (dedicated line) or through the Internet. Of course, as information for the EPG, a signal superimposed on the broadcast wave itself can be used.

  FIG. 2 is a diagram illustrating an example of a functional configuration of software that realizes the untrusted part notification function provided in the video recording apparatus 1. Note that some of the various functions described below may be realized by hardware.

  The untrusted part notification function is realized by software executed by the MPU 52 and includes an attribute determination unit 81, a display processing unit 82, and an alert processing unit 83.

  The attribute determination unit 81 is an optical disc used for dubbing or the like that has been subjected to data protection by AACS (Advanced Access Content System) (hereinafter referred to as “AACS protected disc”), or data by a method other than AACS. It can be determined whether the disk is protected (hereinafter referred to as “non-AACS protected disk”).

  Further, the attribute determination unit 81 can copy the attributes of individual parts (title, chapter, etc.) constituting the video data, for example, dubbing from a non-AACS protected disk (hard disk, DVD, etc.) to an AACS protected disk (HD DVD, etc.). It is possible to determine whether or not the part corresponds to an unacceptable part (hereinafter referred to as “untrusted part”). For example, a title recorded on a hard disk through a line input from an external digital tuner of the video recording apparatus 1 is an untrusted part. On the other hand, a title recorded on a hard disk from a digital tuner built in the video recording apparatus 1 becomes a trusted part that can be dubbed to an AACS protection disk (such as an HD DVD).

  The display processing unit 82 includes a title list screen including thumbnail images of parts groups managed on a hard disk or the like through a GUI (Graphical User Interface), and thumbnail images of dubbing source parts groups and dubbing destination parts groups. A dubbing edit screen (screen used for dubbing operation) can be displayed on the television (monitor) M. Further, on each display screen, attribute information indicating the attribute can be displayed in the form of an icon or the like in the area of each thumbnail image. For example, when there is the untrusted part in the video data to be dubbed, an icon (hereinafter referred to as dubbing to a dubbing destination medium (HD DVD or the like) is impossible in the thumbnail image area. , Referred to as “untrusted icon”). This untrusted icon may be always displayed on the title list display screen, etc., but the dubbing edit screen is displayed when it takes more than a certain amount of time to determine the untrusted part. You may make it display only when it is doing.

  When there is an instruction to perform dubbing by the user's operation (pressing an execution button such as copy or move), the alert processing unit 83 determines that there is an untrusted part in the video data to be dubbed before dubbing is performed. For example, a warning message can be displayed as an alert to the user.

  FIG. 3 is a diagram for explaining a method for determining whether an optical disc used for dubbing is an AACS-protected disc or a non-AACS-protected disc.

  Whether the optical disc used for dubbing is an AACS-protected disc or a non-AACS-protected disc is determined based on information recorded in a predetermined lead-in area on the optical disc. can do. For example, in the case of HD DVD or DVD, by referring to the copy protection system type in the copy protection information recorded in the lead-in area, It is possible to determine whether the data is protected by the method.

  FIG. 4 is a diagram for explaining information used for determining an untrusted part.

  When a title is recorded on the hard disk, VOB (Video Object) and SOB (Stream Object) corresponding to the main body of the title are stored, and title management information for managing the title is also stored. The As shown in FIG. 5, a VOB is composed of MPEG2 data including a large number of GOPs (Group of Pictures), and each GOP has an RDI (Real-time Data Transmission) packet. Information of Trusted Input is included in a CCI (Copy Control Information) area. The information of trusted input indicates whether or not it is an untrusted part. In the present embodiment, when the title is recorded, the information of the trusted input is recorded (or updated) on the hard disk in a state where the information is included in the title management information.

  For this reason, when the dubbing source is a hard disk, it is only necessary to refer to the trusted input information in the title management information without referring to all individual GOPs included in the VOB. It can be immediately determined whether the title is an untrusted part.

  On the other hand, when the dubbing source is a DVD (however, data protection other than AACS, for example, data protection by CPRM (Content Protection for recordable media)), it is in the CCI area in the VOB or SOB. By referring to the information of the trusted input, it is possible to determine whether or not the title is an untrusted part.

  FIG. 6 is a diagram for explaining various icons that can be displayed in the display area of each thumbnail image included in the dubbing edit screen.

  In the display area of the individual thumbnail images corresponding to the individual titles of the dubbing source, in addition to “title number” and “title type”, if applicable, “copy prohibited icon” and “untrusted icon” Can be displayed. The “copy prohibition icon” indicates that copying (dubbing) to other media is unconditionally prohibited. As described above, the “untrusted icon” indicates that it corresponds to an untrusted part that cannot be dubbed from a non-AACS protected disk (such as a hard disk or a DVD) to an AACS protected disk (such as an HD DVD).

  FIG. 7 is a diagram illustrating an example of a dubbing edit screen.

  On the dubbing edit screen, the user can specify the dubbing source medium (and parts group) and the dubbing destination medium (and parts group). Each part is displayed in the form of a thumbnail image. According to the example of FIG. 7, “untrusted icon” is displayed in the thumbnail image area of title number 007 in the thumbnail image group (image group arranged on the upper side of the screen) corresponding to the part to be dubbed. You can see what is being done. That is, it can be seen that the title number 007 corresponds to an untrusted part, so that the title cannot be dubbed.

  Next, operations performed by the attribute determination unit 81 and the display processing unit 82 will be described with reference to the flowchart of FIG.

  Here, it is assumed that attribute information (such as copy attributes) of each title is displayed on a screen such as a title list display.

  First, the attribute determination unit 81 refers to title management information stored in a predetermined file (step S11), and determines whether the target title corresponds to a copy-prohibited part (step S12). Since the copy-free part does not correspond to the untrusted part, the display processing unit 82 does not display the untrusted icon (also does not display the copy prohibition icon) (step S13). On the other hand, if the copy-prohibited part is copy-protected, the drive encryption method (data protection method) is determined (step S14).

  When the encryption method is AACS, the display processing unit 82 does not display the untrusted icon because it does not correspond to the untrusted part (step S15). On the other hand, if the encryption method is other than AACS, it is determined whether or not an untrusted part is included in the VOB or SOB (step S16).

  If there is no untrusted part, the display processing unit 82 does not display the untrusted icon (step S15). On the other hand, if there is an untrusted part, the display processing unit 82 displays an untrusted icon (for example, an icon such as “HD DVD ×”) (step S17).

  Next, the operation of the alert processing unit 83 will be described with reference to the flowchart of FIG.

  Here, it is assumed that an execution button such as copy or move is pressed on the dubbing edit screen.

  When an execution button such as copy or move is pressed on the dubbing edit screen, the alert processing unit 83 includes an untrusted part for the part with copy protection for each part to be dubbed through the function of the attribute determination unit 81. It is checked whether or not (step S21).

  Then, the alert processing unit 83 determines whether or not the dubbing destination disk is an AACS protected disk (step S22). If it is a non-AACS protected disk, the dubbing process is executed without displaying an alert (warning message) (step S23). On the other hand, if it is an AACS protection disk, the presence / absence of untrusted parts is determined (step S24).

  If there is no untrusted part, the dubbing process is executed without displaying an alert (warning message) (step S23). On the other hand, if there are untrusted parts, an alert (warning message) is displayed (for example, if the AACS protection disc is HD DVD, the message “Cannot be executed because there are parts that cannot be recorded on HD DVD”). Display) (step S25).

  As described above, according to the present embodiment, when video data includes a part that cannot be dubbed from a medium not protected by AACS to a medium protected by AACS. Since the untrusted icon is displayed in the display area of the corresponding thumbnail image, the user can easily recognize that fact. For this reason, when the user performs a dubbing operation, it is possible to avoid a situation in which the dubbing process fails in the middle and the dubbing destination optical disc (optical disc that can be recorded only once, such as HD DVD-R) is wasted. it can.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

The figure which shows an example of a structure of the recording / reproducing apparatus which concerns on one Embodiment of this invention. The figure which shows an example of the function structure of the software which implement | achieves the untrusted parts notification function with which a video recording device is equipped. The figure for demonstrating the method to determine whether the optical disk used in the case of dubbing is an AACS protection disk or a non-AACS protection disk. The figure for demonstrating the information used for determination of an untrusted part. The figure for demonstrating the structure of VOB. The figure for demonstrating the various icons which can be displayed in the display area of each thumbnail image contained in a dubbing edit screen. The figure which shows an example of a dubbing edit screen. The flowchart which shows the operation | movement by an attribute determination part and a display process part. The flowchart which shows the operation | movement by an alert process part.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Video recording apparatus, 10 ... Recording / reproducing part, 20 ... Data processing part, 30 ... Video input part, 40 ... Video output part, 50 ... Main control part, 60 ... Recording control part, 70 ... Display control part, 81 ... Attribute determination unit, 82 ... Display processing unit, 83 ... Alert processing unit.

Claims (10)

A video recording apparatus capable of recording and reproducing video data,
Determining whether or not there is untrusted data that cannot be dubbed from a first medium that is protected by data other than AACS (Advanced Access Content System) to a second medium that is protected by AACS Means to
Means for displaying attribute information indicating that when there is the untrusted data, the data cannot be dubbed to the second medium;
A video recording apparatus comprising:   The video recording apparatus according to claim 1, wherein when a dubbing execution instruction is given and there is the untrusted data, a warning is displayed.   The video recording apparatus according to claim 1, wherein the attribute information is displayed only when a screen used for a dubbing operation is displayed.   The video recording apparatus according to claim 1, wherein the attribute information is displayed in a display area of a thumbnail image corresponding to the untrusted data.   The video recording apparatus according to claim 1, wherein the attribute information is displayed as an icon. An information display method applied to a video recording apparatus capable of recording and reproducing video data,
Determining whether or not there is untrusted data that cannot be dubbed from a first medium that is protected by data other than AACS (Advanced Access Content System) to a second medium that is protected by AACS And
If there is the untrusted data, display attribute information indicating that the data cannot be dubbed to the second medium.
An information display method characterized by that.   7. The information display method according to claim 6, wherein when there is an untrusted data when a dubbing execution instruction is given, a warning is displayed.   The information display method according to claim 6, wherein the attribute information is displayed only when a screen used for a dubbing operation is displayed.   The information display method according to claim 6, wherein the attribute information is displayed in a display area of a thumbnail image corresponding to the untrusted data.   The information display method according to claim 6, wherein the attribute information is displayed as an icon.

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