JP2008165931A - Program recording/reproducing device and program recording/reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a program recording and reproducing device and a program recording and reproducing method for list displaying a recorded program table and displaying a list of a program table of a loadable and reproducible recording medium so as to be easily identified. <P>SOLUTION: A system controller 4, when a power source is turned on, reads header program information of all recorded programs stored in a system memory 6 and displays a list of the recorded program table on a display 5 in a short period of time. The system controller reads a unique medium serial No. of an actually loaded HDD 10 and determines whether the unique medium serial No. is included in the list and, if it is, highlights the medium serial No. in the list recorded in the HDD 10 so as to be identified. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a program recording / reproducing apparatus and a program recording / reproducing method for recording and reproducing a broadcast program.

With the start of digital broadcasting, programs and playback devices that digitally record and play back digitally broadcasted programs are becoming popular.
In this case, it is necessary to secure the rights of the copyright holder of the program so that the program can be recorded and reproduced.
For this reason, at the time of recording, Patent Document 1 encrypts the recording medium based on the identifier of the recording medium and unique information for each recording (recording) device, and records the information together with the program data (content information) on the recording medium.
At the time of reproduction, the program data is descrambled with the key information decrypted based on the identifier of the recording medium and the unique information for each device.

Further, this Patent Document 1 stores information on program data recorded on a recording medium in a database memory, and has a function of displaying a list of recorded program guides.
However, in the apparatus of Patent Document 1, the program table recorded on the recording medium actually mounted on the apparatus is not displayed in a state that can be easily distinguished from the program table of other recording media, so the user reproduces it. It becomes difficult to determine whether or not the program guide that is desired to be reproduced is ready to be reproduced.
For this reason, it is possible to easily determine whether or not the program guide that the user desires to reproduce is ready to be reproduced, and an apparatus that can improve convenience for the user is desired.
JP 2002-260326 A

  The present invention has been made in view of the above-described points. The present invention makes it possible to display a list of recorded program guides, and to set a list of program guides corresponding to recording media that can be played back by being attached to the apparatus as another list. It is an object of the present invention to provide a program recording / reproducing apparatus and a program recording / reproducing method that can be displayed separately.

  A program recording / playback apparatus according to an embodiment of the present invention includes a program information storage unit that stores program information of a program recorded on each recording medium that is detachably mounted, and a program recorded from the program information. In the program list list output means for outputting a list of tables to the display means, specific information reading means for reading the specific information of the actually mounted recording medium, and in the list of the program guide, the mounted recording medium Display control means for performing display control on the display means so that a list of program guides recorded on the attached recording medium is displayed separately from the list of other program guides based on the unique information read from It was characterized by comprising.

  A program recording / playback method according to an embodiment of the present invention includes a program information storage step of storing program information of a program recorded on each recording medium that is detachably mounted, and a program recorded from the program information. A program guide list output step for outputting a list of tables to a display means; a unique information reading step for reading unique information of a mounted recording medium actually mounted; and the attached recording medium in the list of program guides A display control step of performing display control on the display means so that a list of program guides recorded on the attached recording medium is displayed separately from the list of other program guides based on the specific information read from It was characterized by comprising.

  According to the present invention, it is possible to display a list of recorded program guides, and to display a list of program guides corresponding to recording media mounted on the apparatus and reproducible separately from other lists.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an overall configuration of a program recording / reproducing apparatus 1 according to an embodiment of the present invention. The program recording / reproducing apparatus 1 includes a signal receiving unit 2 that receives a broadcast received from an antenna. The signal receiving unit 2 includes a decoder for decoding transport stream (TS) / video / audio such as MPEG.
The video signal output from the signal receiving unit 2 is input to the graphic engine unit 3. The graphic engine unit 3 generates a graphic image and generates a video in which the generated graphic image and a video signal are appropriately superimposed.
Specific control of the display screen such as the screen configuration and movement of the graphic image and the size of the image of the video signal in the graphic engine unit 3 is performed by the system controller 4. The video generated by the graphic engine unit 3 is output to the display 5 as display means. On the screen of the display 5, a graphic image and a video signal are displayed as a video appropriately superimposed.

The program recording / reproducing apparatus 1 may be configured as a TV receiver with a built-in display 5 having the display 5 incorporated therein, but may be configured as a separate TV receiver and a set top box (STB). good.
The program recording / reproducing apparatus 1 also has a function of encrypting and recording a received program under the control of the system controller 4 and a recording / reproducing function of decrypting, that is, decrypting and reproducing the encrypted program. It has.
The system controller 4 is a controller for controlling the entire program recording / reproducing apparatus 1. The system controller 4 is actually composed of a personal computer including a CPU provided therein and a system memory 6 attached thereto.

In addition, the system controller 4 receives an instruction from the user via a remote controller (abbreviated as a remote controller) 7, instructs the signal reception unit 2 to receive a channel, and displays a display image to the graphic engine unit 3. Take control.
Further, when there is an instruction for recording or reproduction via the remote controller 7, the system controller 4 performs encryption processing at the time of recording and encryption / decryption processing at the time of reproduction. The operation of the decoding unit 8 is controlled.
For example, the system controller 4 reads the program information from the signal receiving unit 2 and sends a control command for managing the encryption format of the program to be recorded to the encryption / decryption unit 8 as necessary.
The encryption / decryption unit 8 performs encryption processing by employing an encryption method such as DES / AES / TDES. Depending on the broadcast service, there may be a recording restriction for each program. In this case, the encryption / decryption unit 8 selects an encryption method in response to an instruction from the system controller 4.

When the remote controller 7 receives a recording instruction or a program reserved for recording, the encryption / decryption unit 8 encrypts the content data (abbreviated as program data) of the program under the control of the system controller 4. Turn into.
The encrypted program data is written (recorded) in, for example, the HDD 10 as a recording medium for recording the program via a hard disk controller (abbreviated as HDD controller) 9 as a recording medium interface.
In the present embodiment, the HDD 10 as a recording medium is detachable from an HDD slot 11 provided on the front surface of the casing of the program recording / reproducing apparatus 1 or the like.
In the present embodiment, the HDD 10 is described as the removable recording medium, but the present invention is not limited to the HDD. Note that the interface of the HDD is not limited to a format such as IDE or SCSI, but a serial format called SATA is widespread, and this serial format may be used. Further, it may be detachable in the USB format.

FIG. 2 shows a mechanism of encryption / decryption by the encryption / decryption unit 8 that performs encryption processing for recording and decryption processing for reproduction employed in the program recording / reproducing apparatus 1 according to the present embodiment. Indicates. In FIG. 2, the processing from the left side to the vicinity of the center shows processing by the program recording / playback apparatus 1 part, and the right side part is a recording that can be freely attached to and detached from (ejected / inserted from) the HDD slot 11 of the program recording / playback apparatus 1. It becomes a part (unique information, etc.) related to the HDD 10 as a medium.
The system controller 4 of the program recording / playback apparatus 1 registers the installed HDD 10 in the registered recording medium before recording the program data in the HDD 10 as the recording medium. Further, the system controller 4 performs control such as deregistration of the registered recording medium. An outline of the registration / deletion will be described later with reference to FIG.

The upper side in FIG. 2 shows the processing contents of recording the encrypted media specific information in the HDD 10 as the attached recording medium when recording on the attached recording medium.
In this case, the encryption / decryption unit 8 has unique (individual) identification information (hereinafter abbreviated as unique information) possessed by the HDD 10 installed in the HDD slot 11, for example, the media serial number disclosed in the specific example of FIG. . Is read (S1 in FIG. 2).
Next, the encryption / decryption unit 8 reads the read media serial number. The program recording / playback apparatus 1 has a private identification information (unique information) that is not disclosed, and in the specific example of FIG. 2, an encryption key for encrypting and recording (recording) program data based on the device ID. Generate (S2 in FIG. 2).

Next, the encryption / decryption unit 8 uses, for example, a media serial No. as unique information of the HDD 10 as a recording medium. Then, the unique device ID of the program recording / playback apparatus 1 is encrypted by a unique method, and the encrypted value is used as the media ID (S3 in FIG. 2).
Then, the encryption / decryption unit 8 writes the media ID as the encrypted unique information in the HDD 10 as a recognition ID for recognizing it as a registered recording medium (S4 in FIG. 2). In this embodiment, a plurality of media IDs are written in the HDD 10 as described below.
In this way, the process for recording the encrypted media ID is completed. When this process ends, the encryption / decryption unit 8 encrypts the program data using the generated encryption key, and the encrypted program data is recorded (recorded) in the HDD 10.

In order to strengthen security by encryption, for example, different encryption methods may be adopted for each recording medium in accordance with the value or code of unique information of the recording medium.
The HDD 10 includes, for example, each area of header program information (also simply referred to as program information) as a program header information and recorded program data, together with an encrypted media ID as shown in FIG. Structure.
In this case, when the encrypted media ID is destroyed, the program recording / playback apparatus 1 recognizes even if the mounted HDD 10 is a normal recording medium even when other areas can be recognized without any problem. The recorded program data cannot be played back.

Also, even if the media ID is copied to another recording medium, the unique information unique to each recording medium does not match, so the program recording / reproducing apparatus 1 cannot correctly recognize it. In this way, the present embodiment has a configuration that can ensure copyright protection. Also, in the HDD 10 as a registered recording medium, a plurality of media IDs are written as shown in FIG. 3 corresponding to the possibility of destruction or deterioration of the media ID as described above. In the example of FIG. 3, for example, a media ID written first and a plurality of media IDs copied from the media ID are written in, for example, the head area.
Thereby, it is possible to avoid a trouble caused by the media ID being broken.

Since the registered recording media may be deteriorated with time, the program recording / reproducing apparatus 1 according to the present embodiment periodically monitors whether the media ID can be read correctly, and may be destroyed. If there is, the media ID is protected from being destroyed by copying the media ID or moving the media ID to an area with less destruction.
Whether or not the media ID can be read correctly may be monitored, for example, every time the HDD 10 is installed in the HDD slot 11, or the program recording / playback apparatus 1 starts a monitoring timer. It may be performed at appropriate time intervals such as every elapse of a predetermined time. As shown in FIG. 3, when program data or the like is recorded on the HDD 10, the system controller 4 of the program recording / reproducing apparatus 1 also records header program information in, for example, the system memory 6 shown in FIG.

That is, when the HDD 10 is installed in the HDD slot 11 of the program recording / reproducing apparatus 1 and recording is performed, the header program information in that case is also stored in the system memory 6. Therefore, the system controller 4 can manage all recording media recorded by the program recording / reproducing apparatus 1 and information management of the recorded programs based on the header program information stored in the system memory 6. I have to.
As described above, the system memory 6 of FIG. 1 is formed with the header program information storage unit 6a in which all the recorded header program information is stored. However, this header program information can be updated as will be described later, and the header program information deleted by the update is deleted.
Further, the system controller 4 can display a list of all recorded program guides in a short time by referring to the header program information.

Further, in the present embodiment, display control is performed so that the list of program guides recorded on a recording medium mounted as described later is displayed separately from other lists in the list, thereby improving user convenience. Can be displayed. For example, the system controller 4 has a display control function 4a for performing display control as shown in FIG. In addition, when a reproduction instruction is given after the recording medium or the like registered as described above is inserted (inserted) into the HDD slot 11 of the program recording / reproducing apparatus 1, As shown on the side, the media ID is read and decryption processing is performed.
In this case, the system controller 4 controls the operation of the encryption / decryption unit 8. Then, the encryption / decryption unit 8 reads the media ID to determine whether the HDD 10 is a registered recording medium (S6 in FIG. 2).

Then, the read media ID is decrypted, that is, decrypted by the decryption process corresponding to the encryption.
As a result, the media serial number as the unique information possessed by the media is displayed. A unique device ID of the program recording / playback apparatus 1 is generated (restored), and a decryption key paired with the encryption key is generated (S7 in FIG. 2). In this case, the generated media serial No. Is shown by the display of the lowermost position in FIG.
The encryption / decryption unit 8 stores the restored unique media serial number. And the unique device ID and the media serial number read from the actual recording medium. Then, authentication is performed by comparing the unique device ID of the program recording / reproducing apparatus 1 (S8 in FIG. 2).
The encryption / decryption unit 8 confirms that the two corresponding pieces of unique information match each other, and recognizes it as a registered recording medium only when it is recognized as correct.

The encryption / decryption unit 8 decrypts the recorded program data by using the decryption key generated to decrypt the encrypted recorded program corresponding to the encryption key used for encryption. Program data can be reproduced.
Therefore, according to the method shown in FIG. 2, only the device ID of the program recording / reproducing apparatus 1 and the unique recording medium registered by linking are recognized, and only the program recorded on the recording medium is recognized. Can be played. In other words, recording and reproduction with a copyright ensured are possible.
In the present embodiment, for example, when the power is turned on, the process of FIG. 2 is performed after the process of displaying a list of program guides (the process of FIG. 4) as described later.

Further, in the present embodiment, the program data is encrypted and recorded on the recording medium registered as described above, and each header program information at the time of recording on each recording medium is also recorded in the system memory 6. Yes.
The header program information includes, for example, a recorded program title, an antenna and channel number used for reception, a recording start time and a recording end time, and, for example, a media serial No. as information of a recorded recording medium. Etc.
As a result, when the program recording / playback apparatus 1 is turned on, the header program information recorded in the system memory 6 is read to display a list of program guides recorded in a short time. .

In this case, a list of program guides recorded on a recording medium actually mounted on the program recording / playback apparatus 1 is displayed so that it can be easily distinguished from other program guide lists. Accordingly, the user can easily recognize whether or not the desired program exists on the recording medium to which the desired program is attached, and can easily reproduce the desired program in a short time.
The operation of the program recording / reproducing apparatus 1 corresponding to this case will be described with reference to the flowchart of FIG.
When the power of the program recording / reproducing apparatus 1 is turned on, the system controller 4 reads information to be displayed as a list of program guides from the header program information recorded in the system memory 6 as shown in step S11, and the graphic engine Output to part 3.

As shown in step S <b> 12, the graphic engine unit 3 processes the information output from the system controller 6 into image information of a display form to be displayed as a list and outputs it to the display 5. The display 5 displays a list of recorded program guides.
Further, as shown in step S13, the system controller 4 controls the encryption / decryption unit 8, and the media serial number as the unique information of the recording medium of the HDD 10 actually mounted in the HDD slot 11 is displayed. Read.
In the configuration shown in FIG. 1, the system controller 4 is shown as accessing the HDD controller 9 via the encryption / decryption unit 8, but the HDD controller 9 is accessed without going through the encryption / decryption unit 8. May be. In this case, the system controller 4 constitutes unique information reading means for accessing the HDD 10 via the HDD controller 9 and reading the unique information.

Then, as shown in step S14, the system controller 4 determines the media serial number. The media serial No. in the recorded recording media used when generating the list. Whether or not there is a match is determined.
In the determination process of step S14, this media serial number is included in the list. If it is determined that there is a match, the process proceeds to step S15.
In step S15, the system controller 4 determines the media serial number. A control signal for distinction display is generated so that the contents of the list portion recorded on the recording medium can be easily distinguished from other list portions, and this control signal is sent to the graphic engine unit 3.
In response to this control signal, the graphic engine unit 3 receives the media serial number. The graphic image processing for displaying, for example, the gray highlight of the list portion of the recording media is performed, and the graphic image is output to the display 5 as a display unit for displaying a list of program guides.
Then, as shown in step S16, the display 5 has this media serial number. The list part of the recording media is highlighted in gray.

Further, the information of the recognized recording medium is obtained by, for example, the media serial number. Is displayed on the display 5.
On the other hand, if it is determined by the determination processing in step S14 that they do not match, the processing in FIG. 4 is ended, or the system controller 4 records the program in the list in the HDD slot 11 as shown in step S17. Alternatively, a guide display indicating that the recording medium is not loaded may be performed.
FIG. 5 shows a display example of a list of program guides in the display 5 by the processing of FIG. The display example of FIG. 5 shows a case where there are two registered recording media. As a recording medium actually installed in the HDD slot 11, the media serial No. For example, the list part of the program guide of Toshiba HDD-200 is highlighted in gray.

Also, the identification information of the recording media that are actually mounted and can be played back is also the media serial number. Is displayed.
On the other hand, the media serial No. as a recording medium recorded previously is recorded. For example, the list part of the program table of Toshiba HDD-100 is displayed in the normal display form.
Therefore, the user can immediately play the program by grasping whether or not there is a program desired to be played in the highlighted program guide list from the highlighted contents. It is possible to easily know whether the recording medium needs to be replaced.
If there is a program that is desired to be reproduced in the highlighted program guide list, the user can operate the remote controller 7 to instruct the reproduction of the program in a short time. The program can be played.

In addition, the form of display control so that it is easy to distinguish for the user is not limited to highlight display, but it is actually mounted (embedded), such as marking, changing the color and font of display, etc. Any form can be used as long as it is easy to distinguish between a recording medium that is attached and a recording medium that is not attached.
In the present embodiment, the list of media serial numbers of recording media on which a program to be reproduced is recorded is shown in the list. The recording media for reproducing the program can be exchanged smoothly.
In the present embodiment, the user can display the system menu shown in FIG. 6 on the display 5 via the system controller 4 by operating the remote controller 7, for example.

In this system menu, for example, a media read screen for reading and displaying unique information of the HDD as a recording medium installed in the HDD slot 11 and an HDD registration screen for registering the HDD as a recording medium are displayed. And are prepared.
When the media read screen is selected, as shown in FIG. Is displayed.
When the HDD registration screen is selected, the HDD mounted as shown in FIG. Displays whether or not to newly register as Toshiba-300. When the user performs registration, the user may perform an OK instruction operation.
Also, the HDD registration screen displays the media serial numbers of HDDs as all recording media already registered. Is displayed, and the registration of any of these HDDs can be deleted (deleted).

That is, the user can delete recorded program data for each recording medium that no longer needs to be recorded and stored. Although not shown here, the recorded contents can be deleted for each program. When registration or deletion is performed in this manner, the information is recorded on the recording medium and the header program information stored in the system memory 6 is also updated.
By providing such a system menu, convenience for the user is ensured.
In the above description, the HDD 10 is described as the recording medium. However, the recording medium is not limited to this. For example, a DVD-R, a DVD-RW, a DVD-RAM, an HD_DVD, a Blu-ray medium, etc. good.
When displaying the list, all recorded program guides may be displayed at once, but the recording media actually installed in the HDD slot 11 is given priority from the relationship between the display area and the displayed font. A part of the recording medium may be displayed for other recording media. The number of lists to be displayed and the font may be set by the user.

The block diagram which shows the structure of the program recording / reproducing apparatus which concerns on one Embodiment of this invention. Explanatory drawing of the mechanism of the encryption and decoding by an encryption / decryption part. The figure which shows the information recorded on the HDD, when it records on HDD as a registered recording medium. The flowchart which shows the operation | movement procedure by which the list of the program schedule currently recorded by turning on the power of the program recording / reproducing apparatus is displayed. The figure which shows the example of a list display of the program schedule displayed on a display. The figure which shows an example of the system menu which a user can select. The media serial number of the installed recording media. The figure which shows the lead screen for confirming. The figure which shows the media registration screen which registers and deregisters a recording medium.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Program recording / reproducing apparatus 4 ... System controller 4a ... Display control function 5 ... Display 6 ... System memory 6a ... Header program information storage part 8 ... Encryption / decryption part 10 ... HDD

Claims (5)

Program information storage means for storing program information of a program recorded on each recording medium detachably mounted;
A program guide list output means for outputting a list of program guides recorded from the program information to a display means;
Unique information reading means for reading the unique information of the mounted recording medium actually mounted;
In the list of program guides, based on the unique information read from the attached recording medium, the list of program guides recorded on the attached recording medium is displayed separately from the list of other program guides. Display control means for performing display control on the display means;
A program recording / playback apparatus comprising:   Further, when recording program content data on the attached recording medium, encryption means for performing encryption processing using an encryption key, and when reproducing program content data on the attached recording medium, 2. The program recording / reproducing apparatus according to claim 1, further comprising decryption means for performing decryption processing corresponding to the encryption processing.   Further, a plurality of pieces of media-specific information encrypted corresponding to the encryption process are written into the attached recording medium using the unique information of the attached recording medium and the unique information of the program recording / playback apparatus. The program recording / reproducing apparatus according to claim 2, wherein:   4. The program recording / reproducing apparatus according to claim 1, further comprising: a display unit configured to display a list of the program guide. 5. A program information storage step for storing program information of a program recorded on each recording medium detachably mounted;
A program guide list output step for outputting a list of program guides recorded from the program information to a display means;
A unique information reading step for reading the unique information of the mounted recording medium actually mounted;
In the list of program guides, based on the unique information read from the attached recording medium, the list of program guides recorded on the attached recording medium is displayed separately from the list of other program guides. A display control step for performing display control on the display means;
A program recording / reproducing method comprising:

Images