WO2007119476A1

WO2007119476A1 - Reproducing device, reproduction control method and reproduction control program

Info

Publication number: WO2007119476A1
Application number: PCT/JP2007/055848
Authority: WO
Inventors: Masakazu Ogawa
Original assignee: Pioneer Corporation
Priority date: 2006-03-24
Filing date: 2007-03-22
Publication date: 2007-10-25

Abstract

Provided is a reproduction control technology by which a user can easily and quickly change registered information. A reproducing device is provided with an operation input section; a reproduction processing section for reproducing content data; and a reproduction control section wherein reproduction control information related to the content data is compared with registered information in accordance with a reproduction command received from the operation input section, the reproduction processing section is controlled in accordance with the comparison results, and reproduction control processing is performed to the content data related to the reproduction control information. The reproduction control section obtains the reproduction control information related to the content data in accordance with a reproduction limit command received from the operation input section while the content data is being reproduced, and the registered information is updated by using the obtained reproduction control information.

Description

Specification

Playback apparatus, playback control method, and playback control program

Technical field

[0001] The present invention relates to a technique for restricting reproduction of content data based on information associated with the content data.

Background art

[0002] Broadcasting stations that provide digital broadcasts associate viewing restriction information with content data (broadcast programs) such as video data and audio data, and broadcast data in which the viewing restriction information and content data are multiplexed. be able to. The receiver receives the content data transmitted from the broadcasting station, compares the viewing restriction information related to the received content data with preset registration information, and determines the content according to the comparison result. Some have a playback control function that limits the playback of data. In such a receiver, the user can set registration information in stages. For example, if level 1 is set as registration information, only content data with viewing restriction information indicating a program for children is played, and if levels 2 to 7 are set, it is for adults. When content data to which viewing restriction information representing programs including scenes of violence is added is permitted and Level 8 is set, all content data is displayed regardless of the viewing restriction information. Registration information can be set to allow playback. This allows children's parents to prevent children from viewing extreme violence scenes and sexual depictions. The playback control function as described above is called a parental lock function. For example, Patent Document 1 (Japanese Patent Laid-Open No. 2003-69797) and Patent Document 2 (US Patent Application Publication) disclose parental lock functions. No. 2003Z046100).

[0003] Further, content data to which viewing restriction information is added can be recorded on a recording medium such as an optical recording medium or a magnetic recording medium. In the playback device, the content data is read from the recording medium, the viewing restriction information added to the content data is compared with preset registration information, and the playback of the content data is controlled according to the comparison result. Some have limited playback control functions. A conventional technique related to this type of regeneration control function is disclosed in, for example, Patent Document 3 (Japanese Patent Laid-Open No. 2002-314944).

However, with the conventional parental lock function, it has been difficult for a user such as a guardian of a child to easily and quickly change the registration information. In other words, in order to change the registration information, the user first needs to go through the setup menu screen, then enter the correct password, and then enter the new registration information. there were.

[0005] In addition, a user's view of morality or education differs depending on the individuality of the user. For this reason, the viewing restriction information set by the broadcasting station is not necessarily information that conforms to the moral or educational view of the user on the receiver side. For example, even when a broadcast station adds viewing restriction information representing a program intended for children to content data, the user may think that the content data should not be viewed by children. Conversely, even when a broadcast station adds viewing restriction information representing an adult-oriented program to content data, the user may have an educational view that the content data should be viewed by children. In such a case, the user can determine whether the content data should be permitted to be viewed or prohibited (locked) only when the content data is actually viewed. However, the conventional parental lock function requires the complicated procedure described above to change the registration information. Therefore, when the user actually views the content data, it is not possible to change the registration information quickly and easily. It was not easy.

Patent Document 1: Japanese Patent Laid-Open No. 2003-69978

Patent Document 2: US Patent Application Publication No. 2003/046100 (corresponding to Patent Document 1 US Patent Application Publication)

Patent Document 3: Japanese Patent Laid-Open No. 2002-314944

Disclosure of the invention

In view of the above, a main object of the present invention is to provide a playback device, a playback control method, and a playback control program that allow a user to easily and quickly change registration information.

[0007] A playback device according to an aspect of the present invention provides a content device associated with playback control information. According to a reproduction command received from the operation input unit, a reproduction processing unit for reproducing the content data, and a reproduction command received from the operation input unit. A reproduction control unit that compares the reproduction control information with registration information, controls the reproduction processing unit according to the comparison result, and executes reproduction restriction processing on content data related to the reproduction control information; And the playback control unit obtains playback control information related to the content data in accordance with a playback restriction command received from the operation input unit during playback of the content data, and uses this to control the registration information Are to be updated.

[0008] A reproduction control method according to another aspect of the present invention is a reproduction control method for executing reproduction of content data associated with reproduction control information, and (a) a reproduction command manually input by an operation input unit And (b) reproducing the content data, comparing the reproduction control information with the registration information according to the comparison result, and executing a reproduction restriction process on the content data related to the reproduction control information according to the comparison result. And a step of acquiring reproduction control information related to the content data and updating the registration information using the reproduction control information in response to a reproduction restriction command manually input by the operation input unit.

[0009] A playback control program according to still another aspect of the present invention is a playback control program for causing a processor to execute a control process for controlling playback of content data associated with playback control information. a) processing for comparing the playback control information with registration information in accordance with a playback command manually input by the operation input unit, and limiting playback of content data related to the playback control information in accordance with the comparison result; (b) In response to a playback restriction command manually input by the operation input unit during playback of the content data, processing for obtaining playback control information related to the content data and updating the registration information using the playback control information. It is characterized by providing.

Brief Description of Drawings

FIG. 1 is a functional block diagram showing a schematic configuration of a playback apparatus that is an embodiment according to the present invention.

FIG. 2 is a flowchart showing a procedure of a reproduction control process according to the present invention.

FIG. 3 is a flowchart showing another procedure of the playback control process according to the present invention. FIG. 4 is a diagram for explaining an example of a method for restricting reproduction of content data.

Explanation of symbols

[0011] 1 playback device

10 Playback processing section

11 Receiver

12 Signal processor

13 Media drive

14 Video / audio output section (data output section)

16 Recording media

20 System controller

20A playback controller

22 memory

23 Program Information Processing Department

26 Input section

27 Remote controller

27p key button

BEST MODE FOR CARRYING OUT THE INVENTION

[0012] This application is based on Japanese Patent Application No. 2006-082598, claiming priority, and the contents of the basic application are incorporated herein by reference.

Hereinafter, various embodiments according to the present invention will be described.

FIG. 1 is a functional block diagram showing a schematic configuration of a playback apparatus 1 which is an embodiment according to the present invention. The playback apparatus 1 includes a playback processing unit 10, a system control unit 20, a program information processing unit 23, and a data recording unit 24. These processing blocks 10, 20 and 24 are connected to a bus 30, and the bus 30 is a circuit for transferring data signals and control signals between these processing blocks under the control of the system control unit 20.

The system control unit 20 has a function of individually controlling the operations of all processing blocks in the playback device 1. The system control unit 20 uses the time information supplied from the timer unit 21. Works. The system control unit 20 can be composed of a microprocessor, a ROM (Read Only Memory), a RAM (Random Access Memory), a plurality of arithmetic blocks, and an input / output interface. As shown in FIG. 1, in this embodiment, the system control unit 20 includes a reproduction control unit 20A. The reproduction control unit 20A is a hardware that can operate independently of the microprocessor as one of the operation blocks. Can be realized. In some cases, the playback control unit 20A may be realized by a control program executed by the microprocessor. The control program can be stored in a recording medium such as ROM or nonvolatile memory.

[0016] The user of the playback device 1 can manually input a command by operating the remote controller 27 or the input unit 26. The manually input command is transferred to the system control unit 20 via the input interface unit 25. The system control unit 20 executes playback control according to the command received from the input interface unit 25. The remote controller 27 has a function of performing near field communication such as infrared communication with the input interface unit 25. The remote controller 27 is provided with various input key buttons and switches for user input operations. ing. The “operation input unit” of the present invention can be constituted by the input interface unit 25, the input unit 26, and the remote controller 27.

The reproduction processing unit 10 includes a receiving unit 11, a signal processing unit 12, a medium driving unit 13, and a video / audio output unit (data output unit) 14. The receiving unit 11 receives a signal propagated through the wireless transmission line or the wired transmission line via the antenna 15A or the cable 15B, A / D converts the received signal, and demodulates it to generate a demodulated signal. In the present embodiment, the receiving unit 11 has a configuration for receiving a digital broadcast signal propagated through a wireless transmission path by using the antenna 15A, and for a wide area computer network such as the Internet or for a CATV (cable television). It has a configuration for receiving a signal propagated through the wired transmission line 15B. The receiving unit 11 can separate the demodulated signal, that is, the multiplexed signal, into encoded video data, encoded audio data, and encoded metadata. The encoded video data and the encoded audio data are transferred to the signal processing unit 12, and the encoded metadata is supplied to the program information processing unit 23.

[0018] The signal processing unit 12 performs signal processing on the encoded data from the receiving unit 11 to decode the encoded data. Thus, content data composed of video data and audio data is generated. The video data and audio data are supplied via a video / audio output unit (data output unit) 14 to a conversion device (not shown) including a display device and a speaker device. As a result, the video data is displayed on the display device, and the audio data is converted into sound waves by the speaker device and emitted. The conversion device of the present embodiment converts the content data into electromagnetic energy or sound energy in the visible range that can be sensed by the user's sight or hearing, and releases these energy to the air medium. It ’s not limited to. For example, the conversion device may be a device that converts content data into a pressure wave that can be sensed by a user's tactile sense and applies it to a solid medium, or a printer that prints content data on a paper medium.

[0019] The program information processing unit 23 can reproduce the metadata by decoding the encoded metadata supplied from the reception unit 11, and obtain reproduction control information from the metadata. The reproduction control information (reproduction restriction information) is attribute information multiplexed in the content data at the broadcasting station, and represents an index based on a predetermined judgment criterion regarding the content data. For example, as an index based on the age of viewers, restriction level 0 is used for content data that is suitable for all age groups, restriction level 1 is used for content data that includes scenes for minors, and for adults. Limit level 2 can be assigned to content data including scenes. The reproduction control information can include a plurality of combinations of predetermined judgment criteria and corresponding indexes. Such reproduction control information is supplied to the system control unit 20. As will be described later, the playback control unit 20A of the system control unit 20 has a function of executing playback restriction processing on content data in accordance with the playback control information.

[0020] Note that the program information processing unit 23 can obtain electronic program guide (EPG) information from metadata, and can use this electronic program guide information as reproduction control information. . The metadata includes production information such as the title of the broadcast program related to the metadata, a description of the contents of the broadcast program, the name of the performer, the name of the producer, the broadcast time, and the name of the right holder. By the way, the receiving unit 11 of this embodiment receives digital television broadcasts, but adopts a configuration for receiving analog television broadcasting instead of the receiving unit 11. You can also In such a case, it is possible to extract the electronic program guide information superimposed in the vertical blanking period of the TV video signal and use this electronic program guide information as reproduction control information.

The medium drive unit 13 demodulates a recording signal read from the recording medium 16 such as a magnetic recording medium or an optical recording medium under the control of the system control unit 20, and gives the demodulated signal to the signal processing unit 12 Have The signal processing unit 12 performs signal processing such as decoding on the demodulated signal from the medium driving unit 13 to generate content data including video data and audio data and metadata associated therewith. The video data and audio data are supplied to a conversion device including a display device and a speaker device via the video / audio output unit 14, and the metadata is transferred to the system control unit 20. As a result, the video data is displayed on the display device, and the audio data is converted into sound waves by the speaker device and released.

[0022] The system control unit 20 transfers the content data generated by the signal processing unit 12 and the metadata associated therewith to the data recording unit 24 via the bus 30, and for example, a large-capacity recording medium such as a hard disk The content data and the metadata can be recorded in the data recording unit 24 having Here, the data recorded in the data recording unit 24 may be data compression-encoded by the signal processing unit 12, or may not be compression-encoded. Further, the system control unit 20 can read content data and metadata from the data recording unit 24 and transfer the read content data to the video / audio output unit 14 via the signal processing unit 12. At this time, the reproduction control unit 20A can execute the reproduction control process on the content data according to the reproduction control information included in the metadata read from the data recording unit 24.

The operation of the playback device 1 having the above configuration will be described below. FIG. 2 is a flowchart showing one procedure of the reproduction control process according to the present invention. The user of the playback device 1 operates the input unit 26 or the remote controller 27 to select a desired broadcast program from broadcast programs distributed from the broadcast station via a wired transmission path or a wireless transmission path. Then, it is possible to input a reproduction command for the content data of the selected program. The playback control process in FIG. 2 is executed by the playback control unit 20A in response to a playback command from a powerful user. The

[0024] Upon receiving a playback command from the input interface unit 25, the system control unit 20 causes the receiving unit 11 to receive the selected broadcast program in response to the playback command. The program information processing unit 23 decodes the encoded data supplied from the reproduction device 1 to reproduce the metadata, and gives this metadata to the system control unit 20.

Referring to the flowchart of FIG. 2, the playback control unit 20A checks whether playback control information exists in the metadata from the program information processing unit 23 (step S10). When there is no playback control information, the playback control unit 20A causes the playback processing unit 10 to start playback of content data of the broadcast program (step S15). As a result, the content data of the received program is reproduced, and the reproduced content data is converted by the conversion device and viewed by the user.

On the other hand, when the reproduction control information is present in step S10, the reproduction control unit 20A acquires the reproduction control information in order to execute the reproduction restriction process (step S11). The playback control unit 20A compares the playback control information with the registration information stored in the memory 22 (step S12), and determines whether or not the playback control information is within the allowable range represented by the registration information ( Step S13). The user can input the registration information by operating the input unit 26 or the remote controller 27 in advance, and can store the registration information in the memory 22 composed of a nonvolatile memory. For example, a broadcasting station can set a restriction level as playback control information. In such a case, the playback device 1 can set a reference level as registration information, and permit playback of content data if there is a limit level in a range (permitted range) below the reference level. Alternatively, two reference levels can be set as an upper limit level and a lower limit level, respectively, and a range that is lower than the upper limit level and exceeds the lower limit level can be set as a permitted range.

[0027] When it is determined in step S13 that the reproduction control information is within the permitted range, the reproduction control unit 20A causes the reproduction processing unit 10 to start reproducing the content data of the received program (step S15). As a result, the content data of the received program is reproduced, and the reproduced content data is converted by the conversion device and viewed by the user.

[0028] On the other hand, when it is determined in step S13 that the playback control information is outside the permitted range, The raw control unit 20A limits the reproduction of the content data of the received program (Step S14). The playback restriction processing for content data is not particularly limited as long as it is a method that does not allow the user to perceive the content data as it is. The reproduction control unit 20A can limit the reproduction of the content data by stopping all or part of the operations of any of the video / audio output unit 14, the reception unit 11, or the signal processing unit 12, for example. While the video / audio output unit 14 stops the output of the video data, the playback may be limited by outputting only the audio data. Alternatively, playback may be limited by superimposing noise data on video data.

[0029] After the reproduction of the content data is started in step S15, the user can confirm the reproduction content of the content data. If the user determines that the playback of the content data should be restricted, the “playback restriction command” can be input by pressing the key button 27p of the remote controller 27 or the key button of the input unit 26). When the playback control unit 2 OA receives a playback restriction command from the input interface unit 25, the playback control unit 2 OA detects that the key button 27p is pressed in response to the playback restriction command (step S20), and then performs the processing of steps S21 to S25. Execute.

[0030] In step S21, the playback control unit 20A issues a pause command to cause the playback processing unit 10 to temporarily stop playback of the content data. Thereafter, the playback control unit 20A confirms whether playback control information exists for the content data whose playback has been temporarily stopped (step S22). When the playback control information does not exist, the playback control unit 20A limits the playback of the content data in the same manner as in step S14 (step S25).

On the other hand, when it is confirmed in step S22 that the reproduction control information exists, the reproduction control unit 20A acquires the reproduction control information from the program information processing unit 23 (step S23), and uses this reproduction control information. The registration information stored in the memory 22 is updated (step S24). For example, when the restriction level is set as the reproduction control information as described above and is stored in the reference level force S memory 22 as registration information, the reference level stored in the memory 22 is replaced with the restriction level. be able to. As a result, the restriction level of the content data determined not to be reproduced by the user is registered as a new reference level. In addition, the range that is below the upper limit level and exceeds the lower limit level as described above is the permitted range. If it is set to, the limit level can be registered as a new lower limit level. After step S24, the playback control unit 20A limits the playback of content data as in step S14 (step S25).

On the other hand, if the playback control unit 20A does not detect pressing of the key button 27p in step S20, it is determined whether or not the playback of the content data has ended (step S16). If it is determined that the playback of the content data does not end, the process returns to step S10, and if it is determined that the playback of the content data has ended, the above playback control process ends.

[0033] In the playback control process of FIG. 2 as described above, when the user actually confirms the playback content of the content data and determines that the content data should not be played back, the user immediately presses the key button 27p. Then, the reproduction of the content data is temporarily stopped (step S21), and the registration information is updated using the reproduction control information related to the content data (step S24). Therefore, the user can change the registration information very easily and quickly according to the playback content of the content data, and it is possible to limit the subsequent playback of the content data according to this registration information.

Here, in steps S22 to S24, the reproduction control unit 20A regards a part of the electronic program guide information obtained from the program information processing unit 23 as reproduction restriction information and stores it in the memory 22. Also good. For example, in the above steps S22 to S24, if the playback control unit 20A considers the title information of the received program, which is the content data, to be the playback restriction information and registers it in the memory 22, thereafter, the regular title with the same title will be used. It is possible to automatically limit the playback of programs broadcasted on the Internet (for example, programs with the same title broadcast every Monday). Alternatively, in the above steps S22 to S24, the playback control unit 20A regards the information on the performers of the received program as the playback restriction information and registers it in the memory 22, and thereafter plays the broadcast program in which the same performer appears. It is also possible to restrict.

Incidentally, in step S22, the playback control unit 20A restricts playback of the broadcast program regardless of whether the playback control information is present or absent (step S25). If the presence of playback control information is confirmed at step S22, the registration information is updated using the playback control information (step S24), and the presence of playback control information is confirmed at step S22. If not, playback of the broadcast program is restricted without the registration information being updated (step S25). Therefore, if playback of a broadcast program is restricted without the registration information being updated, the playback control unit 20A automatically cancels the broadcast program playback restriction after a certain period of time, for example, about 15 minutes to 30 minutes. Alternatively, if the user operates the remote controller 27 and presses a predetermined key button combination, the playback restriction of the broadcast program may be released according to the pressing.

Next, another procedure of the reproduction control process according to the present invention will be described below. FIG. 3 is a flowchart showing the procedure of the reproduction control process for controlling the reproduction of the content data recorded in the recording medium 16 or the data recording unit 24. The user of the playback device 1 can input a playback command for data recorded in the recording medium 16 or the data recording unit 24 by operating the input unit 26 or the remote controller 27. When the system control unit 20 receives a playback command from the input interface unit 25, the system controller 20 operates the playback processing unit 10 or the data recording unit 24 so that the content data is read from the recording medium 16 or the data recording unit 24 according to the playback command. To control. When metadata related to the content data is recorded together with the content data, the metadata is also read and transferred to the system control unit 20.

Referring to the flowchart of FIG. 3, playback control unit 20A checks whether playback control information exists in the transferred metadata (step S30). If the reproduction control information does not exist, the reproduction processing unit 10 is started to reproduce the content data (step S35). As a result, the content data read from the recording medium 16 or the data recording unit 24 is converted by the conversion device and viewed by the user.

On the other hand, when the reproduction control information exists in step S30, the reproduction control unit 20A acquires the reproduction control information (step S31). The playback control unit 20A compares the playback control information with the registration information stored in the memory 22 (step S32), and determines whether the playback control information is within the allowable range represented by the registration information (step S32). S33). At this time, when it is determined that the reproduction control information is within the allowable range, the reproduction control unit 20A causes the reproduction processing unit 10 to start reproducing the read data (step S35).

[0039] On the other hand, when it is determined in step S33 that the reproduction control information is outside the permitted range, The raw control unit 20A limits the reproduction of the content data (step S34). As described above, the reproduction restriction process for content data is not particularly limited as long as it is a method that does not allow the user to perceive the content data as it is. The playback control unit 2 OA can limit the playback by stopping all or part of the operations of the signal processing unit 12, the medium driving unit 13, or the data recording unit 24, for example. Alternatively, you can play alternative data instead of content data. As shown in FIG. 4, when the alternative data Da corresponding to the playback restriction range is recorded together with the content data Dc on the recording medium 16, the system control unit 20 substitutes the alternative data Da for the content data Dc. Playing back content data Dc can be restricted.

[0040] After the reproduction of the content data is started in step S35, the user can check the reproduction content of the content data. If the user determines that the playback of the content data should be restricted, the “playback restriction command” can be input by pressing the key button 27p of the remote controller 27 or the key button of the input unit 26). The playback control unit 2 OA detects the pressing of the key button 27 p in accordance with the playback restriction command received from the input interface unit 25 (step S40), and subsequently executes the processing of steps S41 to S45.

[0041] In step S41, the playback control unit 20A issues a pause command to cause the playback processing unit 10 and the data recording unit 24 to temporarily stop playback of the content data. Thereafter, the playback control unit 20A confirms whether playback control information exists for the content data whose playback has been temporarily stopped (step S42). When the reproduction control information does not exist, the reproduction control unit 20A restricts the reproduction of the content data as in the above step S34 (step S45).

On the other hand, when it is confirmed in step S42 that the reproduction control information exists, the reproduction control unit 20A acquires the reproduction control information from the metadata transferred from the signal processing unit 12 or the data recording unit 24 (step S43). Then, the registration information stored in the memory 22 is updated using the reproduction control information (step S44).

[0043] On the other hand, if the playback control unit 20A does not detect the pressing of the key button 27p in step S40, it is determined whether or not the playback of the content data has ended (step S). 36). If it is determined that the playback of the content data does not end, the process returns to step S30, and if it is determined that the playback of the content data has ended, the above playback control process ends.

In the playback control process shown in FIG. 3 as described above, if the user actually confirms the playback content of the content data and then presses the key button 27p, the playback of the content data is temporarily stopped (step S41). Then, the registration information is updated using the playback control information related to the content data (step S44). Therefore, the user can change the registration information very simply and quickly according to the content data playback content, and it is possible to limit the subsequent playback of the content data according to this registration information.

Claims

The scope of the claims

[1] A playback device that performs playback of content data associated with playback control information.

An operation input unit in which instructions are manually input;

A reproduction processing unit for reproducing the content data;

In response to a playback command received from the operation input unit, the playback control information is compared with registration information, and the playback processing unit is controlled in accordance with the comparison result to control content data related to the playback control information. A reproduction control unit that executes a reproduction restriction process, and the reproduction control unit reproduces the content data in accordance with a reproduction restriction command received from the operation input unit during reproduction of the content data. A reproduction apparatus characterized by acquiring control information and updating the registration information using the control information.

[2] The playback device according to claim 1, wherein the playback control unit controls the playback processing unit immediately after updating the registration information to execute the playback restriction process on the content data. A reproducing apparatus characterized by that.

[3] The playback device according to claim 1 or 2,

The reproduction control information includes information indicating a restriction level for restricting reproduction of the content data,

The reproduction control unit executes the reproduction restriction process according to the comparison result only when the comparison result indicates that the restriction level is not within an allowable range represented by the registration information. A playback device.

[4] The playback device according to any one of claims 1 to 3, wherein the playback control unit causes the playback processing unit to stop playback of the content data, so that the playback restriction process is performed. A playback apparatus characterized by executing

[5] The playback device according to any one of claims 1 to 3, wherein the playback control unit causes the playback processing unit to play back alternative data instead of the content data. A playback apparatus that executes a restriction process.

[6] The playback device according to any one of claims 1 to 5,

The reproduction processing unit A receiving unit that receives a broadcast signal transmitted from a broadcasting station via a wired transmission line or a wireless transmission line; and

A signal processing unit that performs signal processing on the received broadcast signal to generate the content data;

A data output unit that outputs the content data to a conversion device that converts input data into energy that can be sensed by humans, and

The playback apparatus, wherein the playback control unit executes the playback restriction process by controlling the data output unit.

[7] The reproduction device according to any one of claims 1 to 5, wherein

The reproduction processing unit

A drive unit for reading a recording signal from the recording medium;

A signal processing unit that processes the read recording signal to generate the content data;

[8] A playback control method for executing playback of content data associated with playback control information,

(a) The reproduction control information is compared with registration information in accordance with a reproduction command manually input by the operation input unit, and reproduction restriction processing is performed on content data related to the reproduction control information according to the comparison result. A step of performing

(b) obtaining reproduction control information related to the content data in accordance with a reproduction restriction command manually input by the operation input unit during reproduction of the content data, and updating the registration information using the reproduction control information; ,

A reproduction control method comprising:

[9] The playback control method according to claim 8, further comprising a step of executing the playback restriction process on the content data immediately after the step (b). Playback control method.

[10] A reproduction control program for causing a browser to execute a control process for controlling reproduction of content data associated with reproduction control information,

The control process is

(a) Processing for comparing the reproduction control information with registration information according to a reproduction command manually input by the operation input unit, and restricting reproduction of content data related to the reproduction control information according to the comparison result When,

(b) processing for obtaining reproduction control information related to the content data and updating the registration information using the reproduction control information in response to a reproduction restriction command manually input by the operation input unit during reproduction of the content data; ,

A playback control program comprising:

11. The reproduction control program according to claim 10, wherein the control process further includes a process for restricting reproduction of the content data immediately after execution of the process (b). .