JP2009223995A - Content reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a user from misidentifying the device as a failure of the device when the device is not provided with a function depending on a control system. <P>SOLUTION: The content reproducing system 1 reproduces content read out from a Blu-ray Disk (BD)(R) 41 in which at least any one out of HDMV content and BD-J content has been recorded, the system is provided with a reproducing part 21 reproducing content read out from the BD 41, a function providing part 23 providing the prescribed function in reproduction of the HDMV content, a control system obtaining part 25 obtaining a control system of content recorded in the BD 41. and a notification part 22 which notifies the user about at least any one information indicating that content is the BD-J content and that the prescribed function is not provided, when an obtained control system is the BD-J content. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a content reproduction apparatus that reproduces content read from a recording medium in accordance with a content control method corresponding to the content.

  Conventionally, an LED (Light Emitting Diode) indicating that the disc is a CD (Compact Disc), an LED indicating that the disc is a DVD (Digital Versatile Disc), a ROM (Read Only Memory), and an R (Recordable), There is a disk device having a plurality of LEDs provided corresponding to a recording / reproducing form such as RW (ReWriteable), and checking the type of a loaded disk by a combination of lighting LEDs (Patent Document 1). See).

In addition, there is a recording medium reproducing apparatus that can store recording media in a plurality of channels and displays the number of the channel in which the recording medium is stored and the type of the recording medium (see Patent Document 2).
Japanese Patent Laid-Open No. 2002-334568 JP 2000-285580 A

  Conventionally, in a content playback apparatus having a function of playing back content such as video and sound recorded on an information recording medium, a function for accepting various operations for controlling playback content, and restarting playback from the position where playback was previously stopped Various functions such as a so-called resume reproduction function are provided. These functions have become common for users through the widespread use of DVDs, etc., and users perform operations that can be performed on general playback devices in accordance with the type of information recording medium loaded in the drive. I hope I can do it.

  Here, even if the content is the same type of content (for example, video content), such as Blu-ray Disc (registered trademark, hereinafter referred to as “BD”), a medium on which content with a different control method in reproduction is provided. is there. More specifically, in BD, as a content control method, HDMV (High Definition Movie), which is an extension of the method used in conventional DVDs, or BD-J (Blu-ray) using a Java (registered trademark) program is used. (Disc Java) control method is used. As for HDMV content, since the control method is an extension of the control method used in the conventional DVD, it is easy to provide the same functions as those provided in the conventional DVD. However, for BD-J content, the control method is different from that of a conventional DVD, and the control method is executed by executing a Java program. Therefore, some of the functions provided in the conventional DVD (resume playback and touch panel display). It is not easy to provide the operation using

  In addition, since it is difficult for the user to recognize the difference in the control method from the content of the content to be played back, the function that the user expects to be provided naturally when playing the content recorded on the BD Is not provided, the user cannot determine whether it is a malfunction of the device or a function that is not provided due to a difference in control method. In particular, when the user does not know that there are a plurality of different control methods, the user is likely to misidentify as a malfunction of the apparatus.

  In view of the above-described problems, an object of the present invention is to prevent a user from misidentifying a malfunction of an apparatus when there is a function that is not provided by a control method.

  In order to solve the above-described problem, the present invention acquires a content control method, and notifies the user of the presence or absence of function restrictions according to the acquisition result, so that there is a function that is not provided by the control method. Can be prevented from being mistaken for a device malfunction.

  Specifically, the present invention provides at least one of content reproduced using the first content control method and content reproduced using a second content control method different from the first content control method. A content playback apparatus for playing back content read from one type of recording medium on which any of them is recorded, and playing back the content read from the recording medium using a corresponding control method A function providing unit that provides a predetermined function in content reproduction using the first content control method, a control method acquiring unit that acquires a control method of the content recorded on the recording medium, and the control When the control method acquired by the method acquisition means is the second content control method, the content related to the acquisition is the first content control method. A notification means for notifying the user of at least one of the content that is reproduced using the content control method and that the predetermined function is not provided in the reproduction of the content related to the acquisition. It is a playback device.

  Here, the content control method is a method for controlling the playback order of content when playing back the content. In the first content control method and the second content control method, the playback order of the content, etc. The method for controlling is different. For example, the first content control method may be a method of controlling the reproduction of content by a command instructing the content control unit incorporated in the reproduction device in advance, such as an identifier of the content to be reproduced. In the content control system, a CPU or the like that executes a program stored in a recording medium together with content executes the function of the content control unit by the CPU (or program execution environment) that executes the program, and plays back the content. A control method may be used. More specifically, when the recording medium is a BD, the first content control method may be HDMV, and the second content control method may be BD-J. The reproduction means reproduces the content read from the recording medium using a corresponding control method among the first or second content control methods.

  The function providing means provides a predetermined function in content reproduction using the first content control method. Here, the predetermined function refers to a resume function that stores the vicinity of the stop position as a playback start position at the next playback when the playback of the content by the playback means is stopped, or a part of the played content on the touch panel display. This is a function that enables a contact operation by touching the display position of the displayed image. However, the predetermined function may be any function that is provided in the reproduction of content using the first content control method but not provided in the reproduction of content using the second content control method. And it is not limited to the contact operation function. In addition, the reason why the content is not provided in the reproduction of the content using the second content control method may be that the content cannot be provided due to restrictions imposed by the second content control method, and the second content control method is the first content control. Since it is different from the system, it may be difficult to provide the same function.

The control method acquisition unit acquires the control method of the content recorded on the recording medium. For example, the content control method can be acquired by reading information indicating the control method of the content recorded on the recording medium. When the acquired control method is the second content control method, the notifying unit determines that the content related to the acquisition is content reproduced using the second content control method, and that the content related to the acquisition is The user is notified that at least one of the predetermined functions is not provided in the reproduction.

  For example, the notifying unit loads the recording medium into the reading device when the control method of the content to be reproduced that is to be reproduced by the reproducing unit is acquired by the control method acquiring unit or when a predetermined user operation is accepted. When the detected content is detected, the message is notified to the user when the content to be played changes from the content according to the first content control method to the content according to the second content control method. . Here, the predetermined user operation may be a reproduction stop operation instructing to stop the reproduction of the content provided with the resume function, or the content provided with the contact operation function is reproduced. Thus, the touch operation to the display position of the image displayed on the touch panel display may be used. More specifically, the content notified by the notification means is that the resume function is not provided, the function that enables the contact operation is not provided, and the like.

  The present invention can also be grasped as an invention of a control method of a content reproduction apparatus, a control program, and a computer-readable recording medium on which the control program is recorded.

  According to the present invention, when there is a function that is not provided by the control method, it is possible to prevent a user from misidentifying a malfunction of the apparatus.

  Embodiments of a content playback system including a content playback apparatus according to the present invention will be described below with reference to the drawings. The content reproduction system according to the present embodiment may be used for various applications such as an in-vehicle device and a portable device, in addition to a content reproduction system installed and used indoors and outdoors.

  FIG. 1 is a diagram showing an outline of the hardware configuration of the content reproduction system according to this embodiment. A content playback system 1 according to the present embodiment includes a CPU (Central Processing) that controls the entire system by processing instructions and data expanded in a RAM (Random Access Memory) 12, a ROM (Read Only Memory) 14, a RAM 12, and the like. (Unit) 11, various programs loaded in RAM 12, HDD (Hard Disk Drive) 13 for storing various data used by the system, decoder (Digital Signal Processor) 15, digital signals passed from decoder 15 D / A converter 16 for converting to analog signal, amplifier 17, touch panel display 2, speaker 3, multi-drive 4, TV tuner 5, AM / FM tuner It has a like, which are electrically connected via a bus or the like.

The multi-drive 4 is an optical disk drive capable of loading and reading a plurality of standard discs (recording media) such as CD, DVD, and BD. In the system according to the present embodiment, information read from a disk such as the BD 41 loaded in the multi-drive 4 is sent to the decoder 15. The decoder 15 generates a video signal and an audio signal based on the read information. And the content reproduction system 1 reproduces | regenerates an image | video and an audio | voice by outputting the video signal and audio | voice signal produced | generated by the decoder 15 to the touch panel display 2 and the speaker 3. FIG. In the present embodiment, the video signal and the audio signal based on the information read from the disc are generated by the decoder 15 such as a so-called DSP (Digital Signal Processor), but the decoding process is developed in the RAM 12 or the like. It may be performed by the CPU 11 that executes the decoded program. Further, the processing of the video signal and the processing of the audio signal based on the information read from the disc may be processed by one processor or may be processed by different dedicated processors.

  The touch panel display 2 is an input / output device (user interface) for the user in the present system, and is controlled by the CPU 11 to display an image for notifying the user of some information, and the user touches the image display portion. A user operation is accepted by detecting the operation. In addition to the touch operation on the touch panel display 2, the content reproduction system 1 accepts an operation by the user by various buttons provided in the system 1 (not shown). Content input via the touch panel display 2 or buttons is recorded in the RAM 12 and processed by the CPU 11. Further, notifications and the like to the user by this system may be acoustically output via the speaker 3.

  FIG. 2 is a diagram showing an outline of a functional configuration of the content reproduction system 1 according to the present embodiment. In the system according to the present embodiment, the CPU 11 interprets and executes the program expanded in the RAM 12 or the ROM 14, thereby reproducing the content 21 using a control method corresponding to the content, the function restriction, etc. to the user. Notifying unit 22 for notifying, function providing unit 23 for providing a predetermined function in playback of HDMV content, input receiving unit 24 for receiving user operation input, and control method for acquiring a control method for content recorded in BD 41 It functions as a content reproduction system 1 including an acquisition unit 25 and a loading detection unit 26 that detects that the BD 41 is loaded in the multi-drive 4.

  The playback unit 21 plays back content using a control method corresponding to the content read from the disc such as the BD41. That is, when the content read from the BD 41 is an HDMV content, the playback of the content is controlled according to the command of the HDMV, and when the content read from the BD 41 is a BD-J content, it is read from the same BD 41. The playback of content is controlled by executing the BD-J program. Note that when playing back content, the playback unit 21 can play back HDMV content and BD-J content continuously.

  In the playback of HDMV content, the function providing unit 23 stores the stop position or its vicinity as a playback start position at the next playback when stopping the playback of the content, and resumes playback from the position stored at the next playback. Predetermined functions such as a function and a function that enables a contact operation by touching a display position of an image displayed on the touch panel display 2 as a part of the reproduced content (so-called contact operation function to a menu screen or the like) I will provide a. These functions may be provided in response to a predetermined user operation. For example, the resume function is provided in response to a user performing an operation accompanied by a reproduction stop such as a reproduction stop operation or an input source switching operation.

  The control method acquisition unit 25 is a control method for content to be played back by the playback unit 21 among the content recorded on the BD 41 (including content that is about to be played back in addition to the content being played back). Is obtained by reading information indicating the control method of the content recorded on the BD 41. The acquisition timing of the content control method may be immediately after the loading detection unit 26 detects the loading of the BD 41 in addition to the time when the content is designated as a reproduction target.

When the control method acquired by the control method acquisition unit 25 is BD-J, the notifying unit 22 is a function that enables a resume function or a contact operation in content playback and that content is BD-J content. The user is notified that at least one of the predetermined functions such as the above is not provided. The timing of notification by the notification unit 22 may be when a predetermined user operation such as a reproduction stop operation or a contact operation is received by the input reception unit 24, and the content being reproduced is BD-J content. -It may be when loading of the BD 41 including the J content is detected. When the operation received by the input reception unit 24 is a playback stop operation, the notification unit 22 notifies that the resume function is not provided, and the operation received by the input reception unit 24 is a contact operation The notification unit 22 notifies that the function that enables the contact operation is not provided. The notification unit 22 also notifies when the reproduction target content or the control method of the content being reproduced has changed. For example, the notification unit 22 notifies when the content played back by the playback unit 21 shifts from HDMV to BD-J content.

FIG. 3 is a diagram illustrating a data configuration of the Blu-ray Disc according to the present embodiment. Blu-ray Disc has an index that lists the contents recorded on the disc.
table, MovieObject for controlling the playback content of HDMV content, BD-J Object for controlling the playback content of BD-J content, PlayList and PlayItem arranged in the playback order in PlayList operated from these objects ClipInfo storing information of the stream file to be referred to, and AV Stream, which is a stream file including actual video and audio data, are recorded.

  Here, the Index table has a list of contents in a format such as First Playback, Top Menu, Title1, Title2, and the like, and information indicating whether each content is HDMV content or BD-J content (hereinafter, BD-J content). This information includes “content control method identification flag” or simply “flag”).

  When the content related to playback is HDMV content, MovieObject is selected, and PlayList, TopMenu, Title, and the like are controlled using Navigation Command as in the conventional DVD video. When the content related to reproduction is BD-J content, BD-J Object is selected, and the Java program is executed to control PlayList, TopMenu, Title, and the like. Note that these objects control the playback content by specifying an ID assigned to PlayList or the like.

  Here, the function providing unit 23 of the content playback system 1 according to the present embodiment stores a playback position when playback is stopped when starting playback of a DVD or the like, and starts playback from the playback position stored at the next playback. Provide functionality. Further, the function providing unit 23 is associated with the image object such as the content recorded on the disc and the setting content by touching the display position of the image object on the touch panel display 2 on which the menu screen or the like is displayed. A so-called direct touch function or the like that provides processing is provided. That is, according to the content reproduction system 1 according to the present embodiment, it is possible to call a process associated with an image object by a contact operation without performing an operation of selecting and determining an object displayed using a remote controller or the like. .

  Functions such as resume playback and direct touch are also provided for BD HDMV content. This is because the HDMV content content control system is an extension of the conventional DVD video content control system, and functions such as resume playback and direct touch can be provided in the same manner.

  However, for BD-J content recorded on a BD, the content control method is not an extension of the conventional method, but is a method for controlling the content by reading and executing a Java program. It is not easy to provide functions such as those in the past. For this reason, the function providing unit 23 according to the present embodiment does not provide a part of the functions provided for the HDMV content with respect to the BD-J content even when playing a disc of the same BD standard.

  That is, for the user, even when a disc of the same BD standard is loaded and viewed, there is a mismatch in function due to the difference in the content control method inside. Both HDMV and BD-J are content control methods inside the device, and it is difficult for the user to grasp the difference in content control method from the content playback screen displayed on the display device. In particular, the user thinks that the above-described functions such as resume are normally provided for reproducing content from a conventional DVD or the like. For this reason, even when the same BD is being played, there is a possibility that the user may mistakenly assume that the device is out of order when a predetermined function is enabled or disabled. Furthermore, when HDMV content and BD-J content are mixed in the same BD, the user's confusion is considered to be greater. Therefore, in the content reproduction system according to the present embodiment, a notification message to the user is displayed to prevent misidentification or confusion of the user.

  FIG. 4 is a flowchart showing the flow of the disk loading message output process according to the present embodiment. The processing shown in this flowchart is started when the loading detection unit 26 receives a signal notifying that a disk is loaded from the multi-drive 4.

In step S101 and step S102, disc loading is detected, and the index is
The table is read out. The loading detection unit 26 receives a signal for notifying loading of a disk from the multi-drive 4 and detects that a disk is loaded in the multi-drive 4 (step S101). In addition, the loading detection unit 26 simultaneously detects that the disk loaded in the multi-drive 4 is a BD. The control method acquisition unit 25 reads the index table recorded on the BD by instructing the multi-drive 4 to read data in response to the detection of the BD loading (step S102). Thereafter, the process proceeds to step S103.

  In step S103, it is determined whether or not BD-J content is included in the loaded BD. The notifying unit 22 refers to the index table read in step S102 and refers to the content control method identification flag in the index table, thereby determining whether or not the BD-J content is included in the loaded BD. judge. If there is a flag indicating that the content control method identification flag in the index table is BD-J content, the process proceeds to step S104. If there is no flag indicating that the content is BD-J content in the index table, the processing shown in this flowchart ends.

  In step S104, a message is displayed. When the notification unit 22 determines in step S103 that the loaded disc includes BD-J content, the notification unit 22 includes the BD-J content on the disc and an unusable function (for example, resume or A message for notifying the user of at least one of the operations via the touch panel display 2 and the like is read from the HDD 13 and output to the display device. Specifically, a message such as “There may be functions that cannot be used because this disc contains BD-J content” is displayed (see FIG. 5). Thereafter, the processing shown in this flowchart ends.

  Thereafter, when the playback of the loaded disc is set to start automatically, the playback section 21 starts the playback processing of the content on the disc without waiting for the user to start playback. In the present embodiment, the message in step S104 is displayed before the start of playback or almost simultaneously with the start of playback, but the display timing of the message may be after the start of playback. For example, a message notifying that the BD-J content is included in the disc or the like may be displayed during or after the first play content including a copyright display or a notice is generally reproduced.

  According to the process shown in this flowchart, by notifying the user in advance that there is a function limitation when the BD 41 is loaded, the user is confused in the reproduction of the content recorded in the BD 41 thereafter, It is possible to prevent mistakes from being mistaken.

  Further, in the processing shown in this flowchart, when the BD-J content is not included in the loaded disc, the processing proceeds to the reproduction processing without displaying a message. Here, the content included in the disc May be notified to the user that all are HDMV contents or that the BD-J contents are not included in the disc.

  FIG. 6 is a flowchart showing the flow of content switching message output processing according to the present embodiment. The processing shown in this flowchart is started when the input receiving unit 24 receives a content switching operation by the user via an input device such as the touch panel display 2 or buttons.

  In step S201 and step S202, a content switching operation is accepted, and the index table is read. The input reception unit 24 receives a content switching operation by receiving a user operation input via the input device (step S201). Then, in response to the content switching operation being accepted, the control method acquisition unit 25 reads the index table recorded on the BD (step S202). However, when the index table read at the time of loading the disk is held in the memory, the information related to the index table may be read from the memory instead of the BD. Thereafter, the process proceeds to step S203.

  In step S203, it is determined whether or not the reproduction target content that is the switching destination content is BD-J content. The notification unit 22 determines whether or not the reproduction target content is BD-J content by referring to the content control method identification flag related to the reproduction target content in the Index table read in step S102. If the reproduction target content is BD-J content, the process proceeds to step S204. If the playback target content is not BD-J content, the processing shown in this flowchart ends.

  In step S204, a message is displayed. The notification unit 22 reads from the HDD 13 a message for notifying the user that the content to be reproduced is BD-J content and there is a function that cannot be used, and outputs the message to the display device. Specifically, a message such as “This content is BD-J content” (see FIG. 7) or “There is a function limitation for BD-J content” (see FIG. 8) is displayed. Thereafter, the processing shown in this flowchart is ended, and then the playback processing of the playback target content by the playback unit 21 is started.

According to the process shown in this flowchart, when a new playback target content is specified, the user is notified in advance that there is a function limitation in the playback of the content to be played back, and in the subsequent playback of the content It is possible to prevent the user from being confused or misidentifying a system failure. In the processing shown in this flowchart, the case where the content is switched in response to the content switching operation by the user has been described. The message can be notified by the same process even when the process is shifted.

  In the process shown in this flowchart, when the reproduction target content is not BD-J content, the process proceeds to the reproduction processing without displaying a message. Here, the reproduction target content is the HDMV content. Or it is good also as notifying a user that it is not BD-J content. Specifically, a message such as “This content is HDMV content” is displayed (not shown).

  FIG. 9 is a flowchart showing the flow of the message output process during user operation according to the present embodiment. The processing shown in this flowchart is started when the input receiving unit 24 receives a predetermined operation by the user via an input device such as the touch panel display 2 or buttons. Here, the predetermined operation by the user is provided for the HDMV content by the function providing unit 23 according to the present embodiment, such as a playback stop operation and an operation of touching an object displayed on the touch panel display 2 in general. This is an operation that triggers a function that is not provided for BD-J content.

  In steps S301 and S302, a predetermined operation is accepted, and it is determined whether or not the currently reproduced content is BD-J content. The input accepting unit 24 accepts that the user has performed a predetermined operation using the input device by a signal from the input device (step S301). Upon receipt of a predetermined operation, the control method acquisition unit 25 reads the Index table on the disc and checks the content control method identification flag, or is currently reproduced on the memory such as the RAM 12. It is determined whether or not the currently reproduced content is BD-J content by a method such as reading the control method of the content being read (step S302). If the currently reproduced content is BD-J content, the process proceeds to step S303. If the currently reproduced content is not BD-J content, the process proceeds to step S304.

  In step S303, a message is displayed. The notification unit 22 reads a message for notifying the user from the HDD 13 or the like that at least one of the currently played content is BD-J content and the function relating to the input operation cannot be provided. And output to the display device. Specifically, a message such as “Cannot resume because of BD-J content” (see FIG. 10) or “This content is BD-J content and cannot be directly touched” (see FIG. 11). Is displayed. Thereafter, the processing shown in this flowchart ends. Here, when the input operation is a playback stop operation, an interface for allowing the user to select whether to actually stop playback is displayed at the same time as the message notifying that the resume is impossible. Also good. Specifically, for example, when an OK button and a cancel button are displayed and the selection operation by the user is awaited. When OK is selected, the reproduction of the content is stopped without performing the resume process, and the cancel is selected. Alternatively, the reproduction of the content may be continued.

In step S304, a function corresponding to a user operation is provided. The function providing unit 23 provides a function corresponding to the operation accepted in step S301. For example, if the input operation is a playback stop operation, preparation for resume playback by recording the playback position and stop of content playback are performed. When a direct touch operation is accepted, a process associated with an object (image) displayed at the position where the touch operation is performed on the touch panel display 2 (for example, reproduction from an associated chapter, Play the associated setting screen). Thereafter, the processing shown in this flowchart ends.

  According to the processing shown in this flowchart, the user performs some operation in expectation that a predetermined function is provided, but the corresponding function is not provided because the content to be reproduced is BD-J content. In such a case, by notifying the user that the function is not provided, it is possible to prevent the user from misidentifying a system failure.

It is a figure which shows the outline of the hardware constitutions of the content reproduction system which concerns on embodiment. It is a figure which shows the outline of a function structure of the content reproduction system which concerns on embodiment. It is a figure which shows the data structure of Blu-ray Disc which concerns on embodiment. It is a flowchart which shows the flow of the message output process at the time of the disc loading concerning embodiment. It is a figure which shows the display image of the message displayed in embodiment. It is a flowchart which shows the flow of the message output process at the time of the content switch which concerns on embodiment. It is a figure which shows the display image of the message displayed in embodiment. It is a figure which shows the display image of the message displayed in embodiment. It is a flowchart which shows the flow of the message output process at the time of user operation which concerns on embodiment. It is a figure which shows the display image of the message displayed in embodiment. It is a figure which shows the display image of the message displayed in embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Content reproduction system 2 Touch panel display 3 Speaker 4 Multi drive 11 CPU (Central Processing Unit)
12 RAM (Random Access Memory)
13 HDD (Hard Disk Drive)
DESCRIPTION OF SYMBOLS 15 Decoder 21 Reproduction | regeneration part 22 Notification part 23 Function provision part 24 Input reception part 25 Control system acquisition part 26 Loading detection part 41 Blu-ray Disc

Claims (10)

One recorded at least one of content reproduced using the first content control method and content reproduced using a second content control method different from the first content control method A content playback device for playing back content read from different types of recording media,
Playback means for playing back the content read from the recording medium using a corresponding control method;
Function providing means for providing a predetermined function in the reproduction of content using the first content control method;
Control method acquisition means for acquiring a control method of content recorded in the recording medium;
When the control method acquired by the control method acquisition means is the second content control method, the content related to the acquisition is content that is reproduced using the second content control method; and Notification means for notifying the user that at least one of the predetermined functions is not provided in the reproduction of content related to acquisition;
A content playback apparatus comprising: The control method acquisition unit acquires a control method of a content to be played that is to be played back by the playback unit among the content recorded on the recording medium,
The notifying means notifies that the predetermined function is not provided when a control method of the reproduction target content is the second content control method;
The content reproduction apparatus according to claim 1. The predetermined function is a resume function for storing the vicinity of the stop position as a reproduction start position at the next reproduction when the reproduction of the content by the reproduction unit is stopped,
The notifying means notifies that the resume function is not provided when a control method of the reproduction target content is the second content control method;
The content reproduction apparatus according to claim 2. The content playback device is connected to a touch panel display that displays the content to be played back by the playback means and enables user operation input by touching the display surface.
The predetermined function is a function that enables a contact operation by touching a display position of an image displayed on the touch panel display as a part of the reproduced content;
The notifying means notifies that the function that enables the contact operation is not provided when the control method of the reproduction target content is the second content control method;
The content reproduction apparatus according to claim 2 or 3. An input receiving means for receiving an input of a predetermined user operation;
The predetermined function provided by the function providing means is a function provided in response to the predetermined user operation,
The control method acquisition unit acquires a control method of the content being reproduced by the reproduction unit,
The notification means is not provided with the predetermined function when the predetermined user operation is received by the input receiving means and the control method of the content being played back is the second content control method. To the user,
The content reproduction apparatus according to claim 1. The predetermined user operation is a reproduction stop operation that instructs the reproduction unit to stop reproduction of the content,
The predetermined function is a resume function for storing the vicinity of the stop position at the time of playback stop as the playback start position at the next playback,
The notification means is not provided with the resume function when the reproduction stop operation is accepted by the input acceptance means and the control method of the content being reproduced by the reproduction means is the second content control method. To inform you,
The content reproduction apparatus according to claim 5. The content playback device is connected to a touch panel display that displays the content to be played back by the playback means and enables user operation input by touching the display surface.
The predetermined user operation is a contact operation by contact with a display position of an image displayed on the touch panel display as a part of the reproduced content,
The predetermined function is a function that enables the contact operation,
The notification means enables the contact operation when the input operation is accepted by the input acceptance means and the control method of the content being reproduced by the reproduction means is the second content control method. Inform you that the feature will not be provided,
The content reproduction apparatus according to claim 5 or 6. The recording medium is a portable recording medium from which information recorded by being loaded into a reading device connected to the content reproduction device can be read.
A load detecting means for detecting that the recording medium is loaded in the reading device;
The control method acquisition unit acquires a control method of the content recorded on the recording medium in which loading is detected by the loading detection unit,
When the control method of the content recorded on the recording medium in which the loading is detected is the second content control method, the notification unit uses the second content control method to determine whether the content related to the acquisition is the second content control method. Notifying the user that the content is to be played back and that the predetermined function is not provided in playback of the content related to the acquisition;
The content reproduction apparatus according to claim 1. In the recording medium, both the content reproduced using the first content control method and the content reproduced using the second content control method are recorded,
The reproduction means continuously reproduces the content according to the first content control method and the content according to the second content control method read from the recording medium,
The notification means is configured such that when the content reproduced by the reproduction means shifts from the content according to the first content control method to the content according to the second content control method, the content to be reproduced is changed to the second content control method. Informing the user that the content is related to the content control method and that the predetermined function is not provided in the reproduction of the content.
The content reproduction apparatus according to claim 1. The control method acquisition means acquires the content control method by reading information indicating the control method of the content recorded on the recording medium.
The content reproduction apparatus according to any one of claims 1 to 9.

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