JP3959721B2 - Optical disk playback device - Google Patents

Description

The present invention relates to an optical disc reproducing apparatus for reproducing information recorded on an optical disc, and in particular,
The present invention relates to an optical disc playback apparatus having a parental function for restricting viewing.

In recent years, optical discs such as DVDs (Digital Versatile Disks) are becoming popular.
VD records digitally compressed video information and audio information. By the way, DV
Movies recorded in D often include scenes that are undesirable for children's education, such as violent scenes and obscene scenes. Therefore, in recent years, for such educational scenes, some restrictions on viewing restrictions have been set for playback. Such a regulation is called parental, and a parental level for restricting viewing according to the content is set in advance on an optical disc such as a DVD.

On the other hand, an optical disk reproducing apparatus that reproduces information on an optical disk such as a DVD has a parental function that restricts reproduction of information on the optical disk, and the parental level of the apparatus set by the user is stored in the memory. For example, 1, from the lowest parental level
If there are levels 2, 3, 4, 5, 6, 7 and 8 and the parental level of the apparatus is set to 5, the optical disk can reproduce information of the parental level 5 or lower, but the parental level 6 , 7 and 8 cannot be reproduced.

The parental level of the apparatus can be arbitrarily set by the user by operating a remote controller of the optical disk reproducing apparatus. Also, when changing the parental level of the device, the password entered in the device as a password is entered into the device as a password, and the parental lock is released to change the parental level. .

For example, in the conventional technique described in Patent Document 1, if a desired title is selected from the reproduced titles before the DVD is loaded in the apparatus and the main information of the DVD is reproduced, the system control unit reproduces the DVD. By controlling the section, presentation information (main part information) such as movies, music, and sub-pictures is reproduced from the head of the desired title. During playback, the system control unit monitors the playback position with reference to various playback control information read and stored in advance from the DVD, and pauses playback when it reaches the viewing restriction section in the desired title. Let
JP 2001-43630 A

However, in the prior art as described above, the parental function (viewing restriction function) is implemented based on the parental level written in advance on the optical disc and the parental level set on the apparatus side. In order to realize the function, it is necessary to perform parental level writing on the optical disc, which leads to an increase in the cost of the optical disc due to the parental level writing operation on the optical disc. Viewing is not restricted with respect to an optical disc on which no parental level is written, so that anyone, as well as children, can freely view the content, which is very problematic.

The present invention has been made in order to solve the above-described problems. The present invention makes it unnecessary to write a parental level on an optical disc, and restricts viewing even for an optical disc on which no parental level is written. An object of the present invention is to provide an optical disk reproducing apparatus having a function capable of performing the above.

In order to achieve the above object, the invention of claim 1 includes harmful phrase information that is harmful to a viewer who is under a changeable set age and personal information of one or more users who have viewing authority.
The memory is stored in advance, and the reproduction process for the optical disc is started, and whether or not a harmful word or phrase is included in the title or chapter indicating the disc content read from the optical disc is stored in the memory. Harmful phrase judging means for judging based on phrase information, and whether it is judged that the title or chapter contains harmful phrases, whether the inputted personal information is included in the personal information stored in the memory Detecting whether or not the input personal information has been read, and determining whether or not the title or chapter contains no harmful words or phrases, When it is determined that the personal information has been read, normal playback processing means for performing normal playback processing and the input personal information are read. If it is determined that no order, to provide an optical disk reproducing apparatus characterized by comprising a system controller and a regeneration disabling processing means for performing processing to disable reproduction.

In this configuration, the reproduction process for the optical disc is started, and whether or not the title or chapter indicating the disc content read from the optical disc contains a harmful phrase is based on the harmful phrase information stored in the memory. Is determined. When it is determined that the title or chapter contains harmful words / phrases, it is detected whether or not the input personal information is included in the personal information stored in the memory, and the input personal information is It is determined whether or not the data has been read.

That is, if the personal information input by the user exists in the memory, the personal information is read, so it is determined that the input personal information has been read. On the other hand, if there is no personal information input by the user in the memory, the personal information is not read, so it is determined that the input personal information could not be read.

When it is determined that no harmful words are included in the title or chapter, or when it is determined that the input personal information has been read, normal reproduction processing is performed.
If it is determined that the input personal information cannot be read, processing for invalidating the reproduction is performed.

According to this configuration, viewing restrictions are made based on the harmful word / phrase information included in the titles and chapters recorded on the optical disc and the user's personal information, so that it is not necessary to write a parental level on the optical disc. The cost of optical discs can be suppressed,
Also, even with an optical disc on which no parental level is written, viewing restrictions can be performed, and the accuracy of parental is improved.

According to the second aspect of the invention, harmful word / phrase information that is harmful to a viewer under the set age and personal information of one or more users who have viewing authority are stored in a memory in advance, and reproduction processing for the optical disc is performed. Is started, and the disc information read from the optical disc includes a harmful phrase stored in the memory, the personal information stored in the memory is given to a user who has viewing authority. In addition, an optical disk reproducing apparatus including a system controller that performs control so that information on the optical disk can be reproduced is provided.

In this configuration, when the reproduction process for the optical disc is started and the harmful information stored in the memory is included in the disc information read from the optical disc,
Since viewing must be restricted, the information on the optical disc can be reproduced only by a user who has the personal information stored in the memory and has viewing authority.

According to this configuration, viewing restrictions are made based on harmful phrase information included in the disc information and the personal information of the user, so that the parental level writing operation to the optical disc becomes unnecessary, and the cost of the optical disc is increased. Even if the optical disk can be suppressed and the parental level is not written, the viewing restriction can be performed, and the parental accuracy is improved.

In the invention of claim 3, since the disc information in the optical disc playback apparatus of the invention of claim 2 is a title or chapter indicating the disc contents, viewing restrictions are imposed if the title or chapter contains harmful phrase information. It can be carried out.

In the invention of claim 4, since the set age in the optical disc playback apparatus of the invention of claim 2 can be changed, the parental level can be changed according to the age of the viewer, and usability is improved.

In the fifth aspect of the invention, the system controller in the optical disc playback apparatus of the second aspect of the invention starts a playback process on the optical disc, and includes a harmful phrase in the title or chapter indicating the disc contents read from the optical disc. Harmful word / phrase determination means for determining whether or not a harmful word / phrase is stored based on the harmful word / phrase information stored in the memory, and when it is determined that the title or chapter contains a harmful word / phrase, A personal information reading judging means for detecting whether or not the inputted personal information has been read by detecting whether or not the personal information is stored in the memory, and the title or chapter contains a harmful word or phrase If it is determined that it has not been read, or if it is determined that the input personal information has been read, A normal reproduction processing means for performing live processing and a reproduction invalidation processing means for invalidating reproduction when it is determined that the input personal information cannot be read. Viewing restrictions can be performed based on harmful word / phrase information contained in the chapters and chapters and personal information of the user.

As described above, according to the present invention, harmful word / phrase information that is harmful to viewers of a set age that can be changed and personal information of one or more users who have viewing authority are stored in a memory in advance. Based on the harmful phrase information stored in the memory, it is determined whether or not a reproduction process for the optical disk is started and a title or chapter indicating the disc content read from the optical disk contains a harmful phrase. When it is determined that a harmful word / phrase determination means and a harmful word / phrase are included in the title or chapter, it is detected whether the input personal information is included in the personal information stored in the memory, Personal information reading determination means for determining whether or not the input personal information has been read; and determining that the title or chapter does not contain harmful words or phrases Or when it is determined that the input personal information has been read, normal playback processing means for performing normal playback processing, and when it is determined that the input personal information has not been read, playback is performed. Since the system controller having the reproduction invalidation processing means for performing the invalidation processing is provided, the viewing restriction can be performed based on the harmful word / phrase information included in the title and chapter recorded on the optical disc and the user's personal information. Therefore, the parental level writing operation to the optical disc is not necessary, and the cost increase of the optical disc can be suppressed. Also, even if the optical disc has no parental level written, viewing can be restricted. Improves the accuracy of parental.

According to the second aspect of the invention, harmful word / phrase information that is harmful to a viewer under the set age and personal information of one or more users who have viewing authority are stored in a memory in advance, and reproduction processing for the optical disc is performed. Is started, and the disc information read from the optical disc includes a harmful phrase stored in the memory, the personal information stored in the memory is given to a user who has viewing authority. Since the system controller that performs control so that only the information on the optical disc can be reproduced is provided, viewing restriction can be performed based on harmful phrase information included in the disc information and personal information of the user. Eliminates the need for parental-level writing to the optical disc, which can reduce the cost of optical discs. Even an optical disc bell is not written, it is possible to carry out the viewing limitation, the accuracy is improved parental.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of an optical disc reproducing apparatus according to an embodiment of the present invention. The optical disk reproducing apparatus includes a spindle motor 5 that rotates the optical disk 1, an optical pickup 2 that emits a laser beam for reproducing information recorded on the optical disk 1 and receives reflected light from the optical disk 1, and the light. A sled 3 for moving the pickup 2 in the radial direction of the optical disc 1, and a spindle motor 5 and the sled 3 are driven in accordance with an instruction from the system controller 22 and an objective lens (not shown) built in the optical pickup 2 is provided. A servo control unit 4 is provided for performing control to move the focal position of the laser beam in the vertical direction and the horizontal direction with respect to the recording surface of the optical disc 1 by moving.

The optical disk reproducing apparatus also includes an RF amplifier 6 that amplifies an RF signal that is a read signal from the optical pickup 2 during reproduction of the optical disk 1, and an RF output from the RF amplifier 6.
A digital signal processing unit 8 that stores data generated by performing signal demodulation processing and error correction processing according to the data format of the optical disk 1 after converting the signal into digital data in the RAM 7, and digital according to instructions from the system controller 22 A stream separation unit 9 is provided that separates audio data, sub-picture data, and video data from the data stream output from the signal processing unit 8.

In addition, the optical disc reproducing apparatus receives audio data output from the stream separation unit 9 and performs a predetermined decoding process, and temporarily stores the data for performing the decoding process in the audio decoder 11. The RAM 10 to store, the sub-picture decoder 13 that inputs the sub-picture data output from the stream separation unit 9 and performs a predetermined decoding process, and temporarily stores the data to perform the decoding process in the sub-picture decoder 13 A RAM 12 to store, a video decoder 15 for inputting video data output from the stream separator 9 and performing a predetermined decoding process, and the video decoder 1
And a RAM 14 for temporarily storing data in order to perform the decoding process in FIG.

In addition, this optical disk reproducing apparatus combines the data output from the video decoder 15 and the data output from the sub-picture decoder 13 in accordance with an instruction from the system controller 22, and the video processor 17 outputs the data. A video encoder 18 for converting the synthesized data into a video signal for display and displaying an image on the display device 20, and D for converting the data output from the audio decoder 11 into an analog audio signal and supplying the analog audio signal to the speaker 19, for example. / A converter 16.

In addition, the optical disk playback apparatus controls the operation unit 21 having various operation keys such as a playback key for giving a playback instruction to the system controller 22 and a stop key for instructing a playback stop, and the entire apparatus. The system controller 22 is provided. The operation unit 21 may be a remote controller or an operation unit provided on the operation panel of the apparatus main body.

In addition, this optical disk reproducing apparatus performs a calculation process according to the flash ROM 23 storing a program and data for controlling each component of the apparatus and controlling the entire apparatus, and the program and data of the flash ROM 23. And a CPU 24 for controlling the system controller 22. In particular, in the case of the present embodiment, harmful word / phrase information that is harmful to viewers of a set age that can be changed and personal information of one or more users who have viewing authority are stored in advance in the flash ROM 23. The harmful phrase information is written in the flash ROM 23 at a factory or the like before shipment of the optical disk reproducing apparatus. The harmful phrase information can also be added by a user input operation to the optical disc playback apparatus. The user's personal information is a password or the like, and is written in the flash ROM 23 by the user's input operation to the optical disc playback apparatus.

As a feature of the present embodiment, the system controller 22 starts reproduction processing for the optical disc, and stores in the flash ROM 23 whether or not a harmful word or phrase is included in the title or chapter indicating the disc contents read from the optical disc. The harmful word / phrase judging means 221 for judging based on the harmful word / phrase information that has been entered, and the individual whose personal information is stored in the flash ROM 23 when it is judged that the title / chapter contains a harmful word / phrase It is determined whether or not the input personal information has been read and the personal information reading determination means 222 for determining whether or not the input personal information has been read, and that the title or chapter does not contain harmful words / phrases. Or if it is determined that the entered personal information has been read, The normal reproduction processing unit 223 for performing live process, when the personal information the input was determined to not be read, are provided a reproduction disable processing unit 224 to perform the process of disabling the playback.

FIG. 2 is a diagram showing an example of a format configuration of information recorded on the optical disc in the present embodiment. In FIG. 2, an area 31 is an area where position information of each control information, title search information, video attribute information, audio attribute information, and the like are recorded. The area 32 is a VOBS (video object / video data group) indicating the video / audio data group of the menu of the area 31.
Set) is an area to be recorded. The area 33 is an area where backup data of the area 31 is recorded.

Note that the title, which is disc information referred to in the present embodiment, refers to title search information in the area 31. The title search information includes a title name and the like, and it is possible to roughly understand what the playback content of the title is based on the title name and the like, and the title name and the like may include harmful words and phrases.

Reference numeral 34 denotes an area in which position information of each control information, chapter search information, title playback information, title cell address information table, title VOBU (video object unit) address information table, and the like are recorded. . 35 is the VO of title # 1
This is the area where BS is recorded. Reference numeral 36 denotes an area in which backup data in the area 34 is recorded.

Reference numeral 37 denotes an area in which position information of each control information, chapter search information, title reproduction information, title cell address information table, title VOBU address information table, and the like are recorded. Reference numeral 38 denotes an area in which the VOBS of title # 2 is recorded. Reference numeral 39 denotes an area in which backup data in the area 37 is recorded.

Note that the chapter that is disc information referred to in the present embodiment refers to chapter search information in the area 34, the area 37, and the like. This chapter search information includes a chapter name and the like, and it is possible to roughly understand what the playback content of the chapter is based on the chapter name and the like, and there are cases where harmful words and phrases are included in the chapter name and the like.

FIG. 3 is a flowchart for explaining the operation of the viewing restriction function in the optical disc playback apparatus of the present embodiment. The operation of the viewing restriction function will be described with reference to this flowchart.

In this optical disk playback apparatus, when the optical disk 1 to be played is loaded and the playback key of the operation unit 21 is pressed (step S1), the system controller 22 starts playback processing (step S2). Thereby, the disc information from the optical disc 1 is read out via the optical pickup 2, the RF amplifier 6, the digital signal processing unit 8, the stream separation unit 9, the video decoder 15, the video processor 17, and the video encoder 18 (step). S3) and displayed on the display device 20 (step S4). The displayed disc information is a title or chapter indicating the disc contents.

Next, the harmful word / phrase determining means 221 of the system controller 22 determines whether or not the title or chapter contains a harmful word / phrase based on the harmful word / phrase information stored in the flash ROM 23 (step S5). . In other words, it is determined whether or not the harmful phrase included in the title or chapter exists in the harmful phrase information stored in the flash ROM 23. As a result of this determination, if it is found that the title or chapter does not contain harmful words / phrases, the process proceeds to normal reproduction processing (step S9), but it has been found that the title or chapter contains harmful information. In such a case, viewing restrictions are performed in the subsequent processing.

Next, the user operates the operation unit 21 to input personal information such as a password (step S6). In response to the input of the personal information, the personal information reading determining means 222 of the system controller 22 determines whether or not the personal information is included in the personal information stored in the flash ROM 23 (step S7). That is, it is determined whether or not the personal information input by the user exists in the flash ROM 23.

If the input personal information is stored in the flash ROM 23, the personal information can be read into the apparatus. Therefore, the personal information reading determination unit 222 determines that the personal information has been read (step S8). The normal playback processing means 223 performs normal playback processing of the main information corresponding to the title or chapter (step S9). Then, the process related to viewing restriction ends.

On the other hand, if the input personal information is not stored in the flash ROM 23, the personal information is not accepted by the apparatus, so that the personal information reading determining means 222 determines that the personal information has not been read (step S10). In addition, the reproduction invalidation processing means 224
A reproduction invalidation process for invalidating reproduction of the main information corresponding to the title or chapter including the harmful phrase is performed (step S11). Then, the process related to viewing restriction ends.

As described above, according to the present embodiment, harmful word / phrase information that is harmful to viewers who can change the set age or lower and personal information of one or more users who have viewing authority are stored in the flash ROM 23 in advance. The reproduction process for the optical disc 1 is started, and whether or not the title or chapter indicating the contents of the disc read from the optical disc 1 contains a harmful phrase is based on the harmful phrase information stored in the flash ROM 23. The harmful word / phrase determining means 221 for determining whether or not the title or chapter contains a harmful word / phrase is included in the personal information stored in the flash ROM 23. A personal information reading determination unit 222 for detecting and determining whether or not the input personal information has been read; When it is determined that no harmful words are included in the title or chapter, or when it is determined that the input personal information has been read, normal playback processing means 223 for performing normal playback processing, and the input Since the system controller 22 is provided with the reproduction invalidation processing means 224 for performing the process of invalidating the reproduction when it is determined that the personal information cannot be read, the harmful information included in the title or chapter recorded on the optical disc 1 is provided. Viewing restriction can be performed based on the phrase information and the user's personal information, and therefore, the parental level writing operation to the optical disc is not required, and the cost increase of the optical disc can be suppressed. Even if it is an unwritten optical disc, it can be viewed and parented. Accuracy is improved.

It is a block diagram which shows the structure of the optical disk reproducing | regenerating apparatus concerning one Embodiment of this invention. It is a figure which shows an example of the format structure of the information recorded on the optical disk in the said embodiment. 6 is a flowchart for explaining an operation of a viewing restriction function in the optical disc playback apparatus of the embodiment.

Explanation of symbols

1 Optical disk 22 System controller 23 Flash ROM (memory)
221 Harmful phrase information judging means 222 Personal information reading judging means 223 Normal reproduction processing means 224 Reproduction invalidity processing means

Claims (5)

In an optical disk playback apparatus for playing back information recorded on an optical disk, harmful word / phrase information that is harmful to viewers of a set age that can be changed and personal information of one or more users who have viewing rights are stored in a memory in advance. In the harmful phrase information stored in the memory, the reproduction processing for the optical disc is started, and whether or not the title or chapter indicating the disc content read from the optical disc contains a harmful phrase is included in the memory. A harmful phrase determination means for determining whether or not the title or chapter contains a harmful phrase, whether or not the input personal information is included in the personal information stored in the memory; And a personal information reading judging means for detecting whether or not the inputted personal information has been read, and the title and chapter. -When it is determined that no harmful words are included in the text, or when it is determined that the input personal information has been read, normal playback processing means for performing normal playback processing, and the input personal information is An optical disc reproducing apparatus comprising: a system controller having reproduction invalidation processing means for performing reproduction invalidation processing when it is determined that reading is impossible. In an optical disc playback apparatus that plays back information recorded on an optical disc, harmful word / phrase information that is harmful to a viewer under the set age and personal information of one or more users who have viewing rights are stored in a memory in advance. In addition, when the reproduction process for the optical disk is started and the harmful information stored in the memory is included in the disk information read from the optical disk, the personal information stored in the memory is held. An optical disc playback apparatus comprising a system controller that performs control so that only a user having viewing authority can play back information on the optical disc. 3. The optical disc reproducing apparatus according to claim 2, wherein the disc information is a title or a chapter indicating disc contents. The optical disk reproducing apparatus according to claim 2, wherein the set age is changeable. The system controller starts the reproduction process for the optical disc, and stores in the harmful phrase information stored in the memory whether or not the title or chapter indicating the contents of the disc read from the optical disc contains a harmful phrase. A harmful phrase determination means for determining whether or not the title or chapter contains a harmful phrase, whether or not the input personal information is included in the personal information stored in the memory; Detecting and determining whether or not the input personal information has been read, personal information reading determination means, and when it is determined that the title or chapter does not contain harmful words or phrases, or the input personal information When it is determined that the data has been read, normal playback processing means for performing normal playback processing and the input personal information are read. If it is determined that no rice, the optical disk reproducing apparatus according to claim 2, characterized in that it comprises a regeneration disabling processing means for performing processing to disable reproduction.

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