JP2004032612A - Digital versatile disk reproducing apparatus and recording medium reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital versatile disk reproducing apparatus and a recording medium reproducing apparatus capable of flexibly imposing a viewing limit only on a required minimum part depending on each user without losing the understanding of the users about contents of a story. <P>SOLUTION: A viewing limit block setting section 111 sets a viewing limit block in a unit of cells being data reproduction units through user operations. A viewing limit setting section 112 sets a user whose viewing is limited and a method for reproduction imposed with the limit to the viewing limit block through user operations and generates viewing limit information indicative of the viewing limit block, the user whose viewing is limited and the method for reproduction imposed with the limit to store the information to a viewing limit information storage section 117. A reproduction control section 114 reads the viewing limit information set to the user discriminated by a user discrimination section 110 from the viewing limit information storage section 117 and instructs a decoding section 105 to perform reproduction control under the viewing limit on the basis of the read viewing limit information. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digital versatile disk (hereinafter, DVD) reproducing apparatus and a recording medium reproducing apparatus, and more particularly to a digital versatile disk reproducing apparatus and a recording medium reproducing apparatus capable of restricting viewing.
[0002]
[Prior art]
2. Description of the Related Art In recent years, a DVD reproducing apparatus for reproducing a DVD on which data such as video and audio is recorded has been developed and put to practical use.
[0003]
By the way, movies and the like contain scenes that are inappropriate for education, such as violent scenes and obscene scenes. DVD playback devices use such scenes as playback prohibited areas so that they cannot be viewed. Some have a rental function.
[0004]
Among DVD playback devices having a parental function, there is a DVD playback device that restricts viewing for each user, as described in, for example, Japanese Patent Application Laid-Open No. H11-150707. In this document, a level is set for a user and a title, and when the user's level is equal to or higher than the title level, the user is allowed to view the title. When the user's level is lower than the title level, the user is allowed to view the title. The user is restricted from viewing the title.
[0005]
Also, for example, in Japanese Unexamined Patent Application Publication No. 8-235758, at the time of parental control, the reproduction prohibited area is not skipped, but instead, a sub-picture is reproduced or an image immediately before the reproduction prohibited area is reproduced. Is displayed.
[0006]
As described above, in the conventional DVD reproducing apparatus having the parental function, it is possible to restrict the viewing of the title including the inappropriate scene according to the level of the user. The image immediately before the prohibited area can be viewed.
[0007]
[Problems to be solved by the invention]
However, the above-described conventional DVD reproducing apparatus having a parental function has the following three problems.
[0008]
First, viewing restrictions are made in units of titles (programs) or chapters. Therefore, even if the scene to be restricted is only a few seconds, all the titles (programs) or chapters including the scene are restricted, and the restriction is more than necessary.
[0009]
Second, the playback method at the time of viewing restriction is to either skip the playback prohibited area, display the immediately preceding still image instead, or play back the sub-picture. Even if the unit that can be restricted in view can be reduced in order to solve the first problem, the user may not be able to fully understand the contents of the story if the reproduction method at the time of parental control remains unchanged.
[0010]
Third, viewing restrictions are made by comparing the level set for the user with the level set for the title. Therefore, the title and the user must be leveled by one evaluation criterion, and this level generally corresponds to an age such as for children or for adults. It is desirable that the parental level is not restricted by one evaluation criterion such as age, but is restricted flexibly according to each user.
[0011]
Therefore, the present invention provides a DVD playback apparatus and a recording medium playback apparatus that can flexibly and restrict the viewing of only the minimum necessary parts for each user without impairing the user's understanding of the story. The purpose is to provide.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, a digital versatile disk playback device according to the present invention is a digital versatile disk playback device that plays back a digital versatile disk on which one or more titles composed of video and audio data are recorded. Setting a parental control block including at least one cell which is a unit of reproduction of video and audio data by a user operation, setting a user who imposes parental control in the parental control block, Parental control setting means for setting parental control contents of restricting parental control, restricting parental control of only audio data, or restricting parental control of both video data and audio data, and the set parental control block Restriction information that matches the user who imposes the parental control and the content of the parental control , A parental level canceling unit that deletes parental level information stored in the parental level information storage unit by a user operation, and a user identification corresponding to the user who can view. User registration information storage means for storing user registration information in which information is recorded; input means for allowing a user to input identification information; and discriminating the input user based on the user registration information and the input identification information A user discriminating unit that performs the parental control based on the set parental control contents with respect to the parental control block set for the determined user with reference to the parental control information storage unit; Playback control means for playing back data or audio data, wherein the playback control means is provided when identification information is not input or a user who has input identification information. If not registered in the user registration information, all viewing restrictions set for all users registered in the user registration information storage means are applied, and the viewing restriction release means In the case where designation of release of parental control of one title is designated for one user, parental control information set in all parental control blocks belonging to the title for the user is deleted.
[0013]
Further, a recording medium reproducing apparatus according to the present invention is a recording medium reproducing apparatus for reproducing data recorded on a recording medium, and includes a parental control block including at least one cell which is a unit of data reproduction by a user operation. Parental level setting means for setting, parental level information storage means for storing parental level information for specifying the parental level set, and reproduction for imposing parental level and reproducing data based on the parental level information Control means.
[0014]
Preferably, the viewing restriction setting means further sets, by a user operation, a user to whom viewing restriction is imposed in the viewing restriction block, and the viewing restriction information storage means stores a viewing restriction block and a user to whom viewing restriction is imposed. User registration information storage means for storing corresponding viewing restriction information, wherein the recording medium playback device stores user registration information in which identification information of the user is recorded in association with a viewable user; Further comprising: input means for inputting identification information; and user determination means for determining the input user based on the user registration information and the input identification information, wherein the playback control means Based on the viewing restriction information set for the user, the data is reproduced with imposing a viewing restriction.
[0015]
Preferably, the data includes video data and audio data, and the parental level setting means further includes a user operation for restricting parental level of only video data, parental level of only audio data, The viewing restriction information storage unit sets either of the viewing restriction contents for restricting the viewing of both data, and stores the viewing restriction information in which the viewing restriction information is associated with the viewing restriction block, the user who sets the viewing restriction, and the viewing restriction contents. The reproduction control means reproduces video data or audio data by imposing a viewing restriction based on the contents of the viewing restriction in the viewing restriction information.
[0016]
Preferably, when the identification information is not input, or when the input user is not registered in the user registration information, the reproduction control unit is set to all users registered in the user registration information storage unit. Apply all viewing restrictions
Preferably, the data includes one or a plurality of titles in which the cells are consecutively arranged, and the recording medium reproducing device reads the viewing restriction information stored in the viewing restriction information storage unit by a user operation. When the parental lock release means for deleting the parental lock for one user is designated by a user operation, the parental lock release means deletes all the parental locks belonging to the title for the user. The parental level information set in the parental level block is deleted.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0018]
(Constitution)
FIG. 1 is a functional block diagram showing the configuration of the DVD playback device according to the present embodiment. As shown in FIG. 1, the DVD playback device 100 includes an input unit 101, a control unit 102, a storage unit 103, a display unit 104, a decoding unit 105, a disk drive 106, and a DVD 107.
[0019]
The input unit 101 includes, for example, a remote controller and receives a password input from the user, a parental level setting instruction, a parental level setting instruction, a parental level release instruction, and a reproduction instruction.
[0020]
The DVD 107 stores video data, audio data, and sub-video data. FIG. 2 shows a navigation data format of a DVD. In the same figure, Cell is a data reproduction unit, and is composed of data of 0.4 to 1 second. Cell numbers are defined in the order of reproduction within one PGC (Program Chain).
[0021]
The Cell is composed of one or more VOBUs (Video Object Units). In one VOBU, video data, audio data, and sub-video data for an integral number of GOPs (Group Of Pictures) are packed and inserted in a time-division manner.
[0022]
A collection of one or more continuous cells is one PG (Program). PG is a unit of random and shuffle reproduction. A set of one or more continuous PGs constitutes one PTT (Part of Title). PTT corresponds to a chapter. A set of one or more continuous PTTs constitutes one PGC. In a simple single story movie or the like, one title is one PGC.
[0023]
The disk drive 106 drives the DVD 107.
The display unit 104 is configured by, for example, a television, and outputs and displays a menu screen, video data, audio data, sub-video data, and the like.
[0024]
Storage section 103 is formed of, for example, a hard disk, and includes a password information storage section 115, a viewing restriction block storage section 116, and a viewing restriction information storage section 117.
[0025]
The password information storage unit 115 stores a password for each user. In the present embodiment, it is assumed that the passwords of user <A> to user <D> have been registered. The user <A> is an administrator of the DVD playback device 100, and only this user <A> can perform the viewing restriction setting and the viewing cancellation setting. In addition, in the case of viewing by a plurality of people, it is assumed that the fictitious user <E> views. It is assumed that all viewing restrictions set for the users <A> to <D> are imposed on the user <E>.
[0026]
The viewing restriction block storage unit 116 stores information for specifying the viewing restriction block set by the viewing restriction block setting unit 111. FIG. 3 shows an example of information for specifying a viewing restriction block. As shown in the figure, the information for specifying the parental control block includes a block number, a PGC and Cell number at the start point of the block, and a PGC and Cell number at the end point of the block.
[0027]
The viewing restriction information storage unit 117 stores the viewing restriction information set by the viewing restriction setting unit 112. FIG. 4A shows an example of viewing restriction information. As shown in the figure, the parental control information includes a DVD medium number, a block number, a PGC and a cell number of a block start point, a PGC and a cell number of a block end point, and a user ID for specifying a user. And a reproduction method ID for specifying a restricted reproduction method. FIG. 4B shows a reproduction method corresponding to the reproduction method ID. In the figure, the audio mute means stopping the reproduction of the audio, the still image display means displaying the image (picture) immediately before the parental control block instead of the video reproduction, and Video playback means displaying a sub-picture (sub-picture) instead of video playback. Sub-picture playback & audio mute means performing sub-picture playback and audio mute at the same time. The display & sound mute means that the still image display and the sound mute are performed simultaneously.
[0028]
The control unit 102 includes, for example, a CPU that executes an installed program, and includes a user determination unit 110, a parental control block setting unit 111, a parental control setting unit 112, a parental control release unit 113, and a reproduction control unit. 114.
[0029]
The user determining unit 110 refers to the password in the password information storage unit 115 and determines from the password input from the input unit 101 whether the viewing user is any of the users <A> to <D>. If the entered password is not registered in the password information storage unit 115 or if no password is entered (when viewed by a plurality of users), the user determining unit 110 sets the viewing user as the user <E>. deal with.
[0030]
When the instruction to start the parental control block is input to the input unit 101, the parental control block setting unit 111 views the PGC and the cell number of the playback frame at the time when the instruction is input as the start point of the parental control start block. When the instruction to end the parental control block is input to the input unit 101, the PGC and the cell number of the playback frame at the time when the instruction is input are set as the end points of the parental control start block. It is stored in the viewing restriction block storage unit 116.
[0031]
When the user whose viewing is restricted and the playback method with the restriction are input to the input unit 101, the viewing restriction setting unit 112 inputs the DVD medium number, the block number, and the PGC of the start point of the block. And viewing control information including a cell number, a PGC and a cell number of an end point of the block, a user ID for specifying a user, and a reproducing method ID for specifying a restricted reproducing method, and storing the parental control information. The information is stored in the unit 117.
[0032]
After the parental level setting by the user is completed, the parental level setting unit 112 creates parental level information for the user <E> by combining all parental level restrictions imposed on the users <A> to <D>. Are stored in the viewing restriction information storage unit 117. Here, the combination of the viewing restrictions is to add all the viewing restrictions imposed on the users <A> to <D>. However, when the still image display and the sub-picture reproduction are combined, the still image display is more restricted.
[0033]
When the parental lock release unit 113 selects the parental lock release and receives an instruction to select a set of a title and a user whose parental lock is to be released, the parental lock release unit 113 selects all blocks belonging to the selected title. The parental level information is modified so that the parental level imposed on the user is released. Further, when the parental lock release unit 113 selects the parental lock release and receives an instruction to select a set of a block for which parental lock is to be released and a user, the parental lock release unit 113 imposes the selected block on the selected user. The parental level information is corrected so that the parental level restriction is released.
[0034]
Further, the viewing restriction release unit 113 corrects the viewing restriction information for the user <E> based on the new viewing restriction information corrected for the users <A> to <D>.
[0035]
The reproduction control unit 114 reads the viewing restriction information corresponding to the user determined by the user determination unit 110 from the viewing restriction information storage unit 117, and controls the reproduction of the DVD 107 based on the read viewing restriction information as follows.
[0036]
The reproduction control unit 114 causes the decoding unit 105 to perform normal reproduction except for the viewing restriction block. That is, the reproduction control unit 114 causes the video decoding unit 118 to decode the video data, and causes the audio decoding unit 119 to decode the audio data.
[0037]
When the reproduction frame reaches the start point of the parental control block, the reproduction control unit 114 causes the reproduction according to the reproduction method that imposes the restriction set on the parental control block. That is, when the reproduction method is the audio mute, the reproduction control unit 114 causes the audio decoding unit 119 to stop decoding the audio data. When the reproduction method is the sub-video display, the reproduction control unit 114 causes the video decoding unit 118 to stop decoding the video data and causes the sub-video decoding unit 120 to decode the sub-video data. When the reproduction method is the still image display, the reproduction control unit 114 causes the video decoding unit 118 to stop decoding the video data.
[0038]
When the playback frame reaches the end point of the parental control block, the playback control unit 114 causes the decoding unit 105 to perform normal playback. When the playback frame reaches the end point of the playback section, or when an instruction to stop playback is input. To end the reproduction.
[0039]
The decoding unit 105 includes a video decoding unit 118, an audio decoding unit 119, and a sub-video decoding unit 120. The video decoding unit 118 decodes the video data in response to an instruction from the reproduction control unit 114, and sends the decoded video data to the reproduction control unit 114. The audio decoding unit 119 decodes the audio data in response to an instruction from the reproduction control unit 114, and sends the decoded audio data to the reproduction control unit 114. The sub-picture decoding section 120 decodes the sub-picture data in response to an instruction from the reproduction control section 114 and sends the decoded sub-picture data to the reproduction control section 114.
[0040]
(motion)
Next, the operation of the DVD reproducing apparatus according to the present embodiment will be described. FIG. 5 is a flowchart showing the operation procedure of the DVD reproducing apparatus.
[0041]
First, when the user inputs a password through the input unit 101, the user determination unit 110 refers to the password information in the password information storage unit 115 to determine whether the input password is registered. If the user is registered, it is determined whether the user is one of the users <A> to <D> (steps S501 to S503).
[0042]
When the password is not input or the input password is not registered, the user determination unit 110 treats the user as <E> (steps S501, S502, and S504).
[0043]
If the user is <A>, the user <A> inputs one of the viewing restriction setting instruction, the viewing restriction release instruction, and the reproduction instruction to the input unit 101, and the specified processing is performed (step S505). ~ S511)
On the other hand, when the user is <B> to <E>, the user <B> to <E> inputs a reproduction instruction to the input unit 101, and the reproduction process is performed (steps S510 and S511).
[0044]
Next, the procedure of the viewing restriction setting processing, the viewing restriction release processing, and the reproduction processing will be described.
[0045]
(Operation of parental control setting process)
FIG. 6 is a flowchart showing the operation procedure of the viewing restriction setting process.
[0046]
First, when the user <A> inputs a reproduction instruction to the input unit 101, the reproduction control unit 114 performs normal reproduction (step S201).
[0047]
When the user <A> inputs an instruction to start a parental control block to the input unit 101 during normal reproduction, the parental control block setting unit 111 sets the PGC and Cell number of the reproduction frame at the time when the instruction is input. It is stored in the viewing restriction block storage unit 116 as the starting point of the viewing restriction start block (step S202).
[0048]
Further, normal reproduction is continued, and during the normal reproduction, when the user <A> inputs an instruction to end the parental control block to the input unit 101, the parental control block setting unit 111 sets the time when the instruction is input. The PGC and the cell number of the playback frame are stored in the viewing restriction block storage unit 116 as the end point of the viewing restriction start block (steps S203 and S204).
[0049]
A plurality of parental control blocks are set by repeating the processing of S201 to S204 described above.
[0050]
After the setting of the parental control block is completed, a screen as shown in FIG. 7A is displayed on the display unit 104, and the user <A> inputs an instruction to select a specific parental control block being displayed on the input unit 101. Is input, the reproduction control unit 114 performs reproduction from the start point to the end point of the selected parental control block (S205, S206).
[0051]
When the user <A> inputs a viewing-restricted user and a restricted reproduction method as shown in FIG. 7B for the selected viewing restriction block, the viewing restriction setting unit 112 Based on this, parental level information is created and stored in parental level information storage unit 117 (step S207).
[0052]
After the parental control setting by the user <A> ends, the parental control setting unit 112 creates parental control information for the user <E> by combining all parental control imposed on the users <A> to <D>. Then, it is stored in the viewing restriction information storage unit 117 (steps S208, S209).
As a result, the parental level as shown in FIG. 7C is set, and based on this, the parental level information shown in FIG. 4A is stored.
[0053]
(Playback operation)
FIG. 8 is a flowchart showing the operation procedure of the reproduction process.
[0054]
The reproduction control unit 114 reads the viewing restriction information set for the user determined by the user determining unit 110 from the viewing restriction information storage unit 117 (step S401).
[0055]
First, the reproduction control unit 114 causes the decoding unit 105 to perform normal reproduction. That is, the video decoding unit 118 decodes the video data, and the audio decoding unit 119 decodes the audio data (step S402).
[0056]
When the reproduction frame reaches the start point of the parental control block based on the read parental control information (step S403), the reproduction control unit 114 performs reproduction according to the reproduction method with the restriction set in the parental control block. Is performed.
[0057]
That is, when the reproduction method is the audio mute, the reproduction control unit 114 causes the audio decoding unit 119 to stop decoding the audio data and performs the audio mute (steps S404 and S405).
[0058]
When the reproduction method is the sub-video display, the reproduction control unit 114 causes the video decoding unit 118 to stop decoding the video data, and causes the sub-video decoding unit 120 to decode the sub-video data. Then, a sub-picture is displayed (steps S407 and S408).
[0059]
When the reproduction method is the still image display, the reproduction control unit 114 causes the video decoding unit 118 to stop decoding the video data, and causes the display unit 104 to display the still image (picture) immediately before the parental control block. Is displayed as it is (steps S410, S411). Although not shown, if the reproduction method is still image display and audio mute, they are performed simultaneously, and if the reproduction method is sub-video display and audio mute, they are performed simultaneously.
[0060]
When the playback frame reaches the end point of the parental control block, the playback control unit 114 causes the decoding unit 105 to perform normal playback (steps S406, S409, S412, and S402).
[0061]
The reproduction control unit 114 ends the reproduction when the end point of the reproduction section is reached or when an instruction to stop the reproduction is input (step S413).
[0062]
(Operation of viewing restriction release processing)
FIG. 9 is a flowchart showing the operation procedure of the viewing restriction release processing.
[0063]
First, the user <A> inputs an instruction to the input unit 101 to select whether to release viewing restriction in title units or to release viewing in block units (step S301).
[0064]
When the release in title units is selected, the parental level release unit 113 causes the display unit 104 to display a screen as shown in FIG. 10, and the user <A> releases the parental level on the input unit 101. An instruction to select a set of a title and a user is input (step S302).
[0065]
The viewing restriction release unit 113 corrects the viewing restriction information so that the viewing restriction imposed on the selected user is released for all blocks belonging to the selected title (step S303).
[0066]
On the other hand, when the release in block units is selected, the viewing restriction release unit 113 causes the display unit 104 to display a screen as shown in FIG. 7C, and the user <A> An instruction to select a block from which viewing restriction is canceled and a set of users is input (step S304).
[0067]
The parental level release unit 113 corrects the parental level information so that the parental level imposed on the selected user for the selected block is released (step S305).
[0068]
Next, the viewing restriction canceling unit 113 corrects the viewing restriction information for the user <E> based on the new viewing restriction information corrected for the users <A> to <D> (step S306).
[0069]
As described above, according to the DVD reproducing apparatus according to the present embodiment, the viewing restriction block is set for each cell, so that the viewing restriction can be imposed only on the minimum necessary portion.
[0070]
In addition, since a user to whom a parental level is imposed is set for each parental level block according to the judgment of the specific user <A>, a flexible setting can be set as compared with the case where the parental level is set uniformly at the level set by the user. Is possible.
[0071]
In addition, the flexible setting according to the situation such as whether to mute the audio, display the immediately preceding still image (picture), play the sub-video, or apply a combination of these, for the parental control block Therefore, it is possible to prevent the user from comprehending the story contents due to the viewing restriction.
[0072]
Furthermore, if no password is entered or no password is registered, all viewing restrictions set for all registered users will be applied. By imposing all of the viewing restrictions set forth above, it is possible to surely restrict the contents to be viewed even when viewed by a plurality of persons.
[0073]
When the parental level is released, the parental level set for all parental level blocks belonging to the title is released by selecting the title, so that the parental level release operation can be easily performed. .
[0074]
(Modification)
The present invention is not limited to the above embodiment, and naturally includes the following modifications.
(1) In the present embodiment, the storage unit 103 is described as a hard disk, but may be a card type such as a flash memory.
(2) In the case of viewing by a plurality of people, for example, when viewing by A and B, all viewing restrictions imposed on A to D are not applied, but are imposed on A and B. Only all viewing restrictions may be applied.
(3) Only the user <A> can set the parental level and the parental level release, but a plurality of users or all users may be set.
(4) The present invention is not limited to a DVD playback device, and may be a playback device for other recording media that stores video or audio data in which data playback units are continuously formed.
[0075]
【The invention's effect】
According to the digital versatile disk reproducing apparatus and the recording medium reproducing apparatus according to the present invention, since the parental control block including at least one cell which is a data reproducing unit is set, it is not a unit of a title or a chapter but an obscenity. Viewing restrictions can be imposed on only the minimum necessary parts such as scenes and violent scenes.
[0076]
In addition, since the user who sets the parental control is set for each parental control block by the user operation, the setting can be more flexible than setting the user level and setting the parental control based on the level uniformly. It is.
[0077]
By the way, in the case of parental control of chapters and titles, it is not a problem to prohibit both video and audio playback, but parental control that includes only specific scenes such as obscene scenes and violent scenes In a block, it is often sufficient to restrict viewing only of video or audio. According to the digital versatile disk playback device of the present invention, for the viewing restriction block, whether to restrict the viewing of only the video data, restrict the viewing of only the audio data, or restrict the viewing of both the video data and the audio data Is set, it is possible to prevent the user's understanding of the story from being impaired by the viewing restriction as much as possible.
[0078]
If the identification information is not input or the input user is not registered in the user registration information, all viewing restrictions set for all registered users are applied, so that a By imposing all viewing restrictions set for everyone when viewing, even when viewing by multiple people, it is possible to reliably restrict the content that the user wants to view.
[0079]
In addition, when designation of release of parental control of one title for one user is specified, parental control information set in all parental control blocks belonging to the title for the user is deleted, so that parental control blocks of the parental control block are deleted. The viewing restriction can be released by an easier operation than in the unit.
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing a configuration of a DVD playback device according to an embodiment of the present invention.
FIG. 2 is a schematic diagram showing a navigation data format of a DVD.
FIG. 3 is a diagram illustrating an example of information for specifying a viewing restriction block;
FIG. 4A is a diagram illustrating an example of viewing restriction information, and FIG. 4B is a diagram illustrating a reproduction method corresponding to a reproduction method ID.
FIG. 5 is a flowchart showing an operation procedure of the DVD reproducing device.
FIG. 6 is a flowchart showing an operation procedure of a viewing restriction setting process.
FIG. 7 is a diagram showing an example of a screen displayed on the display unit 104.
FIG. 8 is a flowchart showing an operation procedure of a reproduction process.
FIG. 9 is a flowchart showing an operation procedure of viewing restriction release processing.
FIG. 10 is a diagram showing an example of a screen displayed on the display unit 104.
[Explanation of symbols]
100 DVD playback device, 101 input unit, 102 control unit, 103 storage unit, 104 display unit, 105 decoding unit, 106 disk drive, 107 DVD, 110 user determination unit, 111 viewing restriction block setting unit, 112 viewing restriction setting unit, 113 viewing restriction release unit, 114 reproduction control unit, 115 password information storage unit, 116 viewing restriction block storage unit, 117 viewing restriction information storage unit, 118 video decoding unit, 119 audio decoding unit, 120 sub-video decoding unit.

Claims (6)

A digital versatile disk reproducing apparatus for reproducing a digital versatile disk on which one or more titles composed of video and audio data are recorded,
A user operation sets a parental control block including at least one cell that is a unit of reproduction of video and audio data, sets a user who imposes parental control in the parental control block, and provides the user with only video data. Parental control setting means for setting parental control contents of either parental control, parental control of audio data only, or parental control of both video data and audio data,
Viewing restriction information storage means for storing viewing restriction information in which the set viewing restriction block, the user who imposes the viewing restriction, and the content of the viewing restriction correspond to each other;
Parental lock release means for deleting parental lock information stored in the parental lock information storage means by a user operation;
User registration information storage means for storing user registration information in which identification information of the user is recorded in association with a user who can view the user;
An input unit for a user to input identification information;
User discriminating means for discriminating the input user based on the user registration information and the input identification information,
With reference to the viewing restriction information storage means, a viewing restriction based on the set contents of the viewing restriction is imposed on the viewing restriction block set for the determined user to reproduce video data or audio data. Playback control means,
If the identification information is not input or if the input user is not registered in the user registration information, the reproduction control means sets all of the users registered in the user registration information storage means. Apply parental controls for
The parental lock release unit is configured to, when a parental lock is specified for one user by a user operation, the parental lock set in all parental lock blocks belonging to the title for the user. Digital versatile disk playback device that erases restriction information. A recording medium reproducing device for reproducing data recorded on a recording medium,
Parental control setting means for setting a parental control block including at least one cell as a data reproduction unit by a user operation;
Parental level information storage means for storing parental level information specifying the set parental level block,
A recording medium reproducing apparatus comprising: a reproduction control unit configured to impose a viewing restriction on the basis of the viewing restriction information and reproduce data. The parental level setting means further sets a user to whom parental level is imposed in the parental level block by a user operation,
The viewing restriction information storage unit stores viewing restriction information in which a viewing restriction block is associated with a user who imposes a viewing restriction,
The recording medium reproducing device,
User registration information storage means for storing user registration information in which identification information of the user is recorded in association with a user who can view the user;
An input unit for a user to input identification information;
Further comprising: a user determining unit configured to determine the input user based on the user registration information and the input identification information,
3. The recording medium reproducing apparatus according to claim 2, wherein the reproduction control means imposes a parental level on the basis of the parental level information set for the determined user and reproduces the data. The data includes video data and audio data,
The parental level setting means may further include, by a user operation, a parental level of either parental level of only video data, parental level of only audio data, or parental level of both video data and audio data. And set
The viewing restriction information storage means stores viewing restriction information in which a viewing restriction block, a user who imposes a viewing restriction, and viewing restriction contents are associated with each other,
4. The recording medium reproducing apparatus according to claim 3, wherein the reproduction control means imposes a parental level based on the parental level in the parental level information and reproduces video data or audio data. If the identification information is not input or the input user is not registered in the user registration information, the reproduction control means sets all of the users registered in the user registration information storage means. 5. The recording medium reproducing apparatus according to claim 3, wherein the viewing restriction is applied. The data includes one or more titles in which the cells are continuously formed,
The recording medium reproducing device,
A parental lock release unit that deletes parental lock information stored in the parental lock information storage unit by a user operation,
The parental lock release unit is configured to, when a parental lock is specified for one user by a user operation, the parental lock set in all parental lock blocks belonging to the title for the user. 6. The recording medium reproducing device according to claim 2, wherein the restriction information is deleted.

Images