JP4855372B2 - REPRODUCTION DEVICE, DATA REPRODUCTION METHOD, CONTROL PROGRAM, AND RECORDING MEDIUM - Google Patents

Description

  The present invention relates to a data reproduction technique for controlling video reproduction.

  In recent years, a variety of contents conforming to the DVD (Digital Versatile Disk) video standard have been circulated regardless of whether they are paid or free of charge, and it has become the mainstream as a recording medium for viewing images.

In the DVD video standard, a “title” corresponding to the main part of a movie or the like and a “menu” that provides various functions related to the title are defined. The menu is displayed, for example, when a menu key is pressed after the disc is inserted, after the title reproduction ends, or during the title reproduction. In the menu, a chapter menu that can be directly played back from a specific time (chapter) in the title, an audio menu / subtitle menu for selecting audio / subtitles, a privilege menu for selecting privilege video, and the like are provided.
With the menu, the DVD is not just a recording medium, but a medium that can provide highly convenient functions.

  However, when displaying the menu, there is a problem that the title reproduction must be interrupted once. Although there is a resume function that allows playback to be resumed from the point at which it was interrupted when returning from the menu, there is a possibility that the continuity of content viewing will be lost and fun will be lost.

  Therefore, it is conceivable that the menu and the title are output and reproduced at the same time so that the title reproduction is not interrupted when the menu is displayed.

  As an example of reading video data from a DVD and outputting a plurality of videos at the same time, for example, a video signal of different angles is output to a plurality of display devices at the same time on a playback device having a plurality of encoders and a plurality of output terminals, or A technique for outputting a video signal so that a screen of one display device is divided into a plurality of parts and displayed on each of the divided screens is disclosed (for example, see Patent Document 1).

In addition, a recording / reproducing apparatus that records or reproduces data on a DVD or the like performs recording and reproduction at the same time, and discloses a technique for simultaneously displaying a recorded image and a reproduced image on one display device (for example, Patent Document 2). reference).
JP 2003-134471 A JP 2003-309807 A

  However, the technique of Patent Document 1 can display a plurality of images at the same time, but provides an interactive function that is controlled by a user operation during video playback, such as displaying a menu while playing back a title. It is not possible.

  Further, in the technique of Patent Document 2, video playback and stop operations can be performed during video recording. This is a function for displaying and controlling the function being operated separately, Like menus, menu operations are not intended to display or control items based on mutually related functions that involve title control.

  In consideration of this, the Blu-ray Disc standard, which is one of the next-generation DVD standards, has a function called “pop-up menu” that overlays and displays a menu during title playback.

  However, in order to use this function, it is necessary to re-author with the next-generation DVD standard, and it is not realistic for the content assets of the DVD standard which is enormous and rapidly increasing at present. Needless to say, if the content is not authored to use the pop-up menu function, the same problem as the DVD standard occurs.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to display a menu without interrupting title playback during title playback even for content that does not support the pop-up menu function. An object of the present invention is to provide a playback device, a data playback method, a control program, and a recording medium.

In view of such circumstances, a playback device according to the present invention is a playback device that plays back data including at least menu data and title data, and receives a data acquisition unit that acquires the data and a user operation. A user operation unit, a first reproduction unit that reproduces the menu data , a second reproduction unit that reproduces the title data, and a reproduction state from the first reproduction unit and the second reproduction unit. A status management unit that stores and manages the playback state of the data upon receiving a status notification; and a control unit that controls the playback of the data, the control unit including the operation information from the user operation unit and the control unit when analyzing the information of the playback state from the state management unit, reproduction state of the data is a condition that reproduces the menu data and the data title at the same time When the control unit receives a title end status notification or a status notification for validating the menu in the title data from the second playback unit, the menu data is sent to the first playback unit. Control is performed to end the reproduction .
The playback device according to the present invention includes at least menu data and title data, and the menu data plays back data including a command, the data acquisition unit for acquiring the data, A user operation unit that receives a user operation, a first reproduction unit that reproduces the menu data, a second reproduction unit that reproduces the title data, the first reproduction unit, and the second reproduction unit A status management unit that receives a status notification indicating a playback status from the storage unit and stores and manages the playback status of the data, and a control unit that controls the playback of the data, wherein the first playback unit includes the command And a status notification related to command execution is output to the control unit, and the control unit receives operation information from the user operation unit and data from the state management unit. Analyzing the data reproduction state information, controlling the first reproduction unit and the second reproduction unit to reproduce the menu data and the title data, respectively, based on the state notification, The second reproduction unit is controlled.
Here, when the menu data command relates to the control of the playback start position of the title data, the control unit controls the second playback unit to play back from the start position. You can do it,
Further, when the menu data command relates to the control of the playback state of the title data, the control unit may control the second playback unit to change the playback state. Good.

The playback apparatus according to the present invention further includes an output unit that synthesizes and outputs the data acquired from the first playback unit and the second playback unit, and the control unit determines an output state of the data, The output form from the output unit is controlled.

In addition, the playback device according to the present invention includes a first output unit and a second output unit that acquire and output data from each of the first playback unit and the second playback unit, and the control unit includes: The output state of data is determined, and the output form from the first output unit and the second output unit is controlled.

Further, in the playback device according to the present invention, when the output state of the data is a state of simultaneously playing back the menu data and the title data, the control unit outputs the second output for outputting a title. It is characterized in that control is performed so that the display relating to the reproduction state of the menu is performed on the part.

In the playback apparatus according to the present invention, the control unit distributes and transmits operation information from the user operation unit to the first playback unit and the second playback unit.

In addition, the playback device according to the present invention includes a recording unit that stores the menu data, and the first playback unit acquires the menu data from the data acquisition unit or the recording unit and plays back the menu data. It is characterized by that.

In the playback device according to the present invention, when the control unit plays back the menu data and the title data, whether the menu data and the title data can be played back simultaneously, a display position, a display size, or It is characterized by controlling at least one of the display ratios.

The data reproduction method according to the present invention is a data reproduction method for reproducing data including at least menu data and title data, and includes a data acquisition step for acquiring the data and a user operation for receiving a user operation. A state in which a state notification indicating a playback state is received from a first playback unit that plays back the menu data and a second playback unit that plays back the title data, and the playback state of the data is stored and managed The management step, the operation information received in the user operation step, and the reproduction state information stored in the state management step are analyzed, and the reproduction state of the data reproduces the menu data and the title data simultaneously. Status notification of the end of title or the tight status from the second playback unit. When receiving the status notification to enable the menu in use data it is characterized in that it comprises a control step of terminating the reproduction of the menu data to the first reproduction unit.
The data reproducing method according to the present invention is a data reproducing method that includes at least menu data and title data, and the menu data includes data including a command, wherein the data is acquired. Receiving the state notification indicating the playback state from the step, a user operation step for receiving a user operation, and a first playback unit for playing back the menu data and a second playback unit for playing back the title data; A state management step for storing and managing the reproduction state of the user, and an operation received by the user operation step by the first reproduction unit executing the command and outputting a status notification regarding command execution to the control unit Information and the reproduction state information stored in the state management step are analyzed, and the first reproduction unit and A control step of controlling each of the second playback units to play back the menu data and the title data, and controlling the second playback unit based on the status notification. And

  A control program according to the present invention causes a computer to execute the data reproduction method.

  The recording medium according to the present invention is characterized in that the control program is recorded so as to be readable by a computer.

As described above, the onset Ming, since includes the reproduction unit for the menu data and title data of each reproduction, the control unit can manage the simultaneous reproduction of the menus and titles.
Further, according to the present invention, when the menu screen is newly displayed, the reproduction of the menu screen so far is terminated, so that it is possible to prevent the user from being confused by reproducing and displaying a plurality of menus.
Further, according to the present invention, since the control unit can transmit the command information of the menu data to the reproducing unit that reproduces the title, the menu selection by the user can be reflected in the title reproduction.
Further, according to the present invention, the command information of the menu data can be transmitted to the playback unit for title playback, so that a jump command for menu playback can be reflected in title playback.
Further, according to the present invention, the command information of the menu data can be transmitted to the playback unit for title playback, so that a playback status change command such as audio and subtitles in menu playback can be reflected in the title playback.

The present onset Ming, since an output unit capable of synthesizing the data output from the two reproducing unit, a menu and a title each screen to a single display device can be displayed properly.

The present onset Ming Since comprises two outputs, menus and titles each screen into two display devices can be properly displayed. Furthermore, since the title and the menu are reproduced on different display devices, the menu can be displayed without disturbing the viewing of the user's title.

In addition, the present onset Ming, in the case of displaying the menu and title to two of the display device, since the display of the menu playback state in the title playback screen, different device and a display device to the user, is doing the title playback It is possible to call attention to the menu screen displayed on the screen. Alternatively, when the connection or setting is not correct and the menu screen is not displayed correctly, the user can be informed to confirm the connection or the like.

The present onset Ming, the control unit depending on the current state, by distributing the user key operation to the reproduction unit for the title for two menus, manipulating the two screens without discomfort by one of the operating device Can do.

The present onset Ming, it is possible to temporarily store the menu data acquired, in case of reproducing a title and a menu at the same time, since the parallel reading from the disk such as the title and menu is not required, the data acquisition unit Can be realized at the same speed read speed. That is, since the rotational speed of the disk can be reduced, it is possible to avoid problems such as increase in noise / vibration and decrease in response due to increase in seek time, which are problems when the read speed is increased.

In addition, the present onset Akira was in the contents of the content, simultaneous playback of whether the menu playback screen and the title playback screen, the display position, you can specify a display mode, such as display size or display ratio and the like.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the embodiment of the present invention, a video disc player will be described. However, the present invention is not limited to this and can be applied to a PC (Personal Computer) or the like.

[First Embodiment]
<System configuration>
FIG. 1 is a functional block diagram showing an outline of the configuration of the video disc player 1 in the present embodiment.
The video disc player 1 is a device that reproduces data recorded on the optical disc 10.

  As shown in FIG. 1, the video disc player 1 includes a disc reading unit 20, a state management unit 30, an overall control unit 40, a user operation unit 50, playback units 60 and 70, and an output unit 80. It consists of

  The disk reading unit 20 reads data from various files stored on the optical disk 10 in accordance with commands from the playback units 60 and 70 and the like. Note that it is desirable that the disk reading unit 20 has a reading speed of at least double speed so that two streams can be read simultaneously.

  The state management unit 30 manages the state of the entire video disc player 1. The definition of this state and the definition of state transition will be described later.

  The overall control unit 40 is responsible for overall control such as initialization after power-on, disc loading, disc ejection, title switching, and the like. Further, the overall control unit 40 controls the playback units 60 and 70 and the output unit 80 based on the user operation information arriving from the user operation unit 50 and the information on the entire state of the video disc player 1 obtained from the state management unit 30. Control. Further, the overall control unit 40 outputs the playback units 60, 70, output based on the state change notified from the playback units 60, 70 and the information on the state of the entire video disc player 1 obtained from the state management unit 30. The unit 80 is controlled.

  The user operation unit 50 receives a signal from a remote controller (not shown) and transmits operation information from the user to the overall control unit 40.

  The playback units 60 and 70 perform playback while interpreting navigation data and presentation data compliant with the DVD standard in accordance with control from the overall control unit 40. Details will be described later.

  The output unit 80 performs composition or switching between video data sent from the reproduction units 60 and 70 in accordance with a command from the overall control unit 40. Similarly, audio data is mixed and switched.

<Playback unit>
FIG. 2 is a functional block diagram showing an outline of the configuration of the playback units 60 and 70.

  As shown in FIG. 2, the playback units 60 and 70 include an I / F 61 with the disc reading unit 20, an I / F 62 with the overall control unit 40, a navigation manager 63, and a presentation engine 64. Composed.

  The I / F 61 with the disk reading unit transmits a data reading command to the disk reading unit 20 in response to commands from the navigation manager 63 and the presentation engine 64, and the read data is transmitted to the navigation manager. 63 and the presentation engine 64.

  Since the navigation manager 63 and the presentation engine 64 are the same as those defined in the DVD video standard, only the outline and the differences will be described.

Navigation data and presentation data are recorded on the DVD disc.
Navigation data is a command that controls information for providing an interactive function, content playback order, and the like. The presentation data is superimposed on the video data compressed by MPEG (Moving Picture Experts Group) -2, audio data compressed by AC (Audio Code number) 3, etc., and the main video used for subtitles and menu display. Sub-picture data is multiplexed.

  The navigation manager 63 analyzes the data (navigation data) read through the I / F 61 with the disk reading unit, and transmits the navigation command in the navigation data and the user transmitted from the I / F 62 with the overall control unit. The presentation engine 64 is controlled according to operation control (User Operation Controls, hereinafter referred to as “UOP”).

  As defined in the DVD video standard, in the navigation manager 63, the system parameters (system parameters, hereinafter referred to as “SPRM”) and general parameters (general parameters) are maintained in order to maintain the states of the playback units 60 and 70. parameter, hereinafter referred to as “GPRM”). The SPRM holds the reproduction state such as the number of the currently selected voice, and the GPRM is a general-purpose parameter that can be freely updated / referenced by a navigation command. Note that SPRM and GPRM are collectively referred to as navigation parameters.

  The presentation engine 64 decodes the presentation data read through the I / F 61 with the disk reading unit in accordance with a command from the navigation manager 63 and sends the decoded data to the output unit 80 as video / audio data. The presentation engine 64 includes a buffer memory that holds the read presentation data, and issues a presentation data read command to the I / F 61 with the disk reading unit so that the buffer memory does not become empty. .

The I / F 62 with the overall control unit notifies the navigation manager 63 of the UOP transmitted from the overall control unit 40. When the navigation manager 63 executes a navigation command for changing the playback state, the navigation manager 63 notifies the overall control unit 40 of it. Specifically, it is execution of a Jump / Link command or a command accompanied by SPRM change.
In addition, even when title reproduction or menu reproduction is completed, the I / F 62 with the overall control unit receives a control signal from the navigation manager 63 and transmits it to the overall control unit 40. The I / F 62 with the overall control unit also has a function of acquiring the current navigation parameter value from the navigation manager 63 and passing it to the overall control unit 40 in response to a command from the overall control unit 40.

  It should be noted that the playback unit 70 is invalidated when a Jump / Link command to a menu other than the menu is executed so as not to play anything other than the menu, and the playback unit 70 does not perform Jump / Link. That is, the navigation manager 63 of the playback unit 70 is set not to perform processing when a Jump / Link command other than a menu is received from the disc reading unit 20.

  Further, the navigation manager 63 constantly monitors reproduction control information (Presentation Control Information, hereinafter referred to as “PCI”), which is control information relating to reproduction display in the navigation data, and reads the control information for enabling the button. In this case, this is notified to the overall control unit 40 through the I / F 62 with the overall control unit. This function includes not only the menu as the so-called top menu described above but also a content in which a kind of menu is displayed in the title, and is necessary for appropriately handling such content.

<State transition and output>
FIG. 3 is an explanatory diagram showing state transition of the overall control unit 40.
There are three possible states after the start of reproduction: “title reproduction state” a, “menu reproduction state” b, and “title & menu reproduction state” c. The title reproduction state a and the menu reproduction state b are states in which only the title or the menu is being reproduced, respectively, and the title & menu reproduction state c is a state in which the title and the menu are simultaneously reproduced.

The transition from the title playback state a to the title & menu playback state c occurs when the user operation unit 50 notifies that the menu key has been pressed after the title playback is started. On the contrary, the transition from the title & menu playback state c to the title playback state a indicates that the execution of the Jump / Link command or the PCI button is valid when the user operation unit 50 is notified that the menu key is pressed. This occurs when a control signal is read .

  The transition from the title playback state a to the menu playback state b occurs when the title playback ends and the menu playback starts. On the other hand, the menu playback state b to the title playback state a occur when the playback of the title is started as a result of selecting a button in the menu.

  The transition from the title & menu playback state c to the menu playback state b occurs when the menu is displayed during the title playback and the title playback is finished and only the menu playback is performed. Here, when the playback of the title is finished, the menu playback at this time is also temporarily stopped, and the playback of the menu displayed at the end of the title playback is started. This is because when two menus are played back simultaneously, there are a plurality of user operation targets, and the user operation system becomes complicated.

  The transition from the menu reproduction state b to the title & menu reproduction state c is not provided because it is better not to display the menu as much as possible when there is no instruction from the user.

An example of the output form of the output unit 80 to the display device in the title & menu reproduction state c is shown in FIG.
For example, the two types of output forms shown in FIGS. 4A and 4B can be switched by user settings. Alternatively, the output unit 80 may determine the output form depending on the type of the display device, or only one of the output forms may be set.
Alternatively, a display form such as the possibility of simultaneous playback of the menu and title playback screen, the display position, the display size, or the display ratio may be set in accordance with the content.

  For example, FIG. 4A shows a small menu display screen so that the menu playback screen does not interfere with the title playback. FIG. 4B shows the title playback screen and the menu playback screen arranged side by side. It is a thing. 4A is suitable for a small-screen television and FIG. 4B is suitable for a large-screen television with a high resolution. Therefore, the output unit 80 recognizes the output resolution of the display device, and both of them according to the output resolution. Can be switched automatically.

  When performing audio output, the output unit 80 selects and outputs only the audio data output from the playback unit 60. This is because, in the title & menu playback state c in which the playback units 60 and 70 perform playback simultaneously, it is considered that the user wants to enjoy the audio playback accompanying the title playback without interruption.

  Hereinafter, processing in the playback apparatus according to the present invention configured as described above will be described.

<Overall processing>
First, a basic processing sequence in the video disc player 1 will be described.
FIG. 5 is a flowchart showing an overall basic processing flow by the video disc player 1.

  First, the overall control unit 40 performs initialization as the power is turned on (S1). Next, the overall control unit 40 determines whether or not a disc has been inserted (S2). When the disc controller detects insertion of the disc (“YES” in S2), the overall control unit 40 performs disc playback processing (S3). If the overall control unit 40 does not detect the insertion of the disc (“NO” in S2), the overall control unit 40 proceeds to the process of S5. In the disc playback process of S3, the overall control unit 40 instructs the playback unit 60 to perform a playback process similar to normal DVD playback. The disc playback process will be described in detail later. When the disc playback is completed, the overall control unit 40 performs a disc ejection process (S4), determines whether or not the power is turned off (S5), and when the power is turned off (“YES” in S5). ) And finish processing (S6). If the power is not turned off (“NO” in S5), the process returns to the determination in S2.

<User operation handling>
Next, a handling process performed by the overall control unit 40 when operation information is input from the user operation unit 50 while performing a basic process as shown in FIG. 5 will be described.

  FIG. 6 is a flowchart showing a flow in which the overall control unit 40 handles the operation information from the user operation unit 50 during the disk reproduction process in S3 of FIG.

  When the user operation information is transmitted from the user operation unit 50 (S11), the overall control unit 40 first obtains the current state of the overall control unit 40 with reference to the state management unit 30 (S12). The process is switched as follows according to the acquired state.

  When the current state is the title & menu playback state: The overall control unit 40 determines whether or not the current state acquired from the state management unit 30 is the title & menu playback state (S13).

When it is in the title & menu playback state (“YES” in S13), the overall control unit 40 analyzes the operation information of the user operation unit 50 to check whether or not the user operation is a menu key press (S14). If the button is pressed (“YES” in S14), a menu screen closing process, which will be described in detail later, is executed (S15), this process is terminated, and the process returns to S3 in FIG.

  With such a configuration, when the menu key is selected on the title & menu screen, the role of the menu is terminated, so that the overall control unit 40 closes the menu screen and sets the playback screen for only the title. it can.

  If the menu key has not been pressed (“NO” in S14), the overall control unit 40 checks from the operation information of the user operation unit 50 whether the operation is a button control key such as a cursor key or an enter key (S16). If it is a button control key (“YES” in S16), it is converted into a corresponding UOP (for example, Upper_Button_Select ()) and transmitted to the playback unit 70 that plays back the menu (S17). If the operation is not performed using a button control key, the corresponding UOP (for example, forward_scan () in the case of a fast-forward key) is converted to a forward playback unit 60 that performs title playback (S18).

  With this configuration, the overall control unit 40 determines whether the user operation relates to a menu or a title even when the pressed key is not a menu key, and an appropriate control signal (UOP). Can be distributed to the reproducing unit 60 and the reproducing unit 70. In other words, even in the menu & title playback state, it is possible to receive user operations for each menu and title and to perform appropriate processing.

  When the current state is the title playback state: When determining in S13 that the title & menu playback state is not selected, the overall control unit 40 determines whether or not the title playback state is set (S19). When it is in the title reproduction state (“YES” in S19), the overall control unit 40 analyzes the operation information of the user operation unit 50 to check whether the user operation is a menu key press (S20). If this is the case (“YES” in S20), the menu screen opening process described in detail later is executed (S21). On the other hand, if the menu key is not pressed (“NO” in S20), it is converted into a UOP corresponding to the key operation, and transmitted to the playback unit 60 that performs title playback (S22).

  With this configuration, the overall control unit 40 determines whether the user operation on the title screen is to select the menu screen or relates to title reproduction, and reproduces an appropriate control signal (UOP). It can be divided into the part 60 and the reproducing part 70.

  When the current state is the menu playback state: If the overall control unit 40 determines that the title playback state is not selected in S19, it can be said that the current state is the menu playback state. Since the user's operation is a playback instruction operation for the title selected from the menu, the general control unit 40 converts it to a UOP corresponding to the key operation and transmits it to the playback unit 60 that performs title playback, as in the normal DVD processing. (S22). The output unit 80 is currently in a state where it receives data output from the playback unit 70 and causes the display device to display a menu. However, the output unit 80 is switched under the control of the overall control unit 40 to play a title from the playback unit 60. The title is displayed on the display device.

  As described above, the overall control unit 40 distributes user key operations to the reproduction unit 60 and the reproduction unit 70 according to the current state, so that it is possible to operate two screens with a single remote controller without a sense of incongruity. Become.

<Status notification handling>
Next, a handling process performed by the overall control unit 40 when a status notification is input from the playback units 60 and 70 during basic processing as shown in FIG. 5 will be described.

  FIG. 7 is a flowchart showing a flow of handling the status notification received from the playback units 60 and 70 by the overall control unit 40 during the disk playback process of S3 of FIG.

  When there is a status notification (S31), the overall control unit 40 first checks the notification source (S32). Depending on the notification source, the process is switched as follows.

  When the notification source is the playback unit 60: the notification source is a notification from the playback unit 60 that plays the title (“YES” in S32), the overall control unit 40 analyzes the status notification, and the notification content is the title. It is determined whether or not the reproduction has ended (S33). Also, if the title playback end status notification is not received (“NO” in S33), the overall control unit 40 determines whether or not the status notification is obtained by reading the control information for enabling the PCI button in the navigation data. Is determined (S34). When the control information validates the button (“YES” in S34), the overall control unit 40 further refers to the state management unit 30 to determine whether or not the title & menu playback state is in effect. (S35), if it is in the title & menu playback state (“YES” in S35), a menu screen close process, which will be described in detail later, is executed (S36), this process is terminated, and S3 in FIG. Return to the process. Here, executing the menu screen closing process when the menu button in the title is enabled prevents the user from being confused by displaying the menu on both the title playback screen and the menu playback screen. Because.

  In addition, when the menu screen is closed, the menu is closed because the menu may be displayed on the title playback screen. It is desirable to display a message such as “

  If it is not in the title & menu playback state (“NO” in S35), the overall control unit 40 ends this processing and returns to the flow of FIG. This is because the menu button in the title becomes valid from the state where only the title is reproduced, and it is only necessary to return to normal processing.

  When the status notification from the playback unit 60 is about the end of the title playback (“YES” in S33), and when the title & menu playback state is set (“YES” in S35), the overall control unit 40 Performs a menu screen closing process (S36). This is because, as described in the explanation of the state transition diagram of FIG. 3, when two menus are played back simultaneously, there are a plurality of user operation targets, and the user operation system becomes complicated. Exit the menu once.

  Notification source is the playback unit 70: When the notification source is a notification from the playback unit 70 that plays the menu ("NO" in S32), the overall control unit 40 analyzes the status notification and the notification content is Jump. It is determined whether or not the / Link command is executed (S37). When the status notification is a Jump / Link command execution (“YES” in S37), the overall control unit 40 reproduces a UOP instructing reproduction of a title corresponding to the command (for example, Title_Play () when the command is JumpTT). Is transmitted to the unit 60 (S38), a menu screen closing process is executed (S36), and this process is terminated.

  With the above-described configuration, when the Jump / Link command is executed in the playback unit 70, the menu screen close process is executed, and the title playback screen can be used more greatly.

  If the status notification is not a Jump / Link command execution (“NO” in S37), the overall control unit 40 checks whether the notification content is an SPRM value change (S39). When the status notification is an SPRM value change (“YES” in S39), the overall control unit 40 reproduces a UOP corresponding to the SPRM value change (for example, Audio_Stream_Change ()) when the SPRM (1) changes. 60 (S40), and this process is terminated.

  With the above configuration, the overall control unit 40 can appropriately recognize and perform processing even when the status notification from the playback unit 70 is the execution of a navigation command associated with the SPRM change.

  As described above, the overall control unit 40 that has received the status notification from the playback units 60 and 70 can analyze the status notification and execute an appropriate handling process.

<Menu screen open / close processing>
The process in which the overall control unit 40 handles the operation information from the user operation unit 50 and the status notifications from the playback units 60 and 70 has been described. The menu screens shown in FIGS. 6, S15, S21 and FIGS. The close process will be described in detail below.

  FIG. 8A is a flowchart showing the flow of the menu screen opening process, and FIG. 8B is a flowchart showing the flow of the menu screen closing process.

First, the menu screen opening process will be described.
In the menu screen opening process, first, the overall control unit 40 acquires the current navigation parameter value of the playback unit 60 and sets it in the playback unit 70 (S41). This is necessary for the menu playback by the playback unit 70 to reflect the current state so that the user does not feel uncomfortable.

  Next, the overall control unit 40 instructs the state management unit 30 to change the state to the menu & title playback state (S42).

  Further, the overall control unit 40 transmits a MenuCall () UOP to the playback unit 70 to start menu playback (S43). Simultaneously with the start of the menu reproduction, the output unit 80 is instructed to open the menu screen (S44), that is, for example, to output the video image as shown in FIG.

Next, the menu screen closing process will be described.
In the menu screen closing process, first, the overall control unit 40 acquires the navigation parameter value of the playback unit 70 and sets it in the playback unit 60 (S51). This is necessary to reflect the navigation parameters updated by the menu operation in the title reproduction. Of the navigation parameters, information indicating the playback location of the menu image (for example, the title number and playback time) is an exception because the menu is played back when reflected.

  Next, the overall control unit 40 instructs the output unit 80 to close the menu screen (S52), transmits a STOP () UOP to the reproduction unit 70, and stops reproduction (S53). Finally, the state management unit 30 is instructed to change the state to the title playback state or the menu playback state according to the playback state of the playback unit 60 (S54).

<Variation>
In this embodiment, the menu playback state is changed only to the title playback state. However, the menu playback state may be changed to the title & menu playback state according to the user's preference.

  In the present embodiment, the screen shown in FIG. 4 is used for the screen display in the title & menu playback state, but the present invention is not limited to this. For example, a menu playback screen may be superimposed on a title playback screen and displayed in a semi-transparent manner.

  In this embodiment, UOP is used to control the playback units 60 and 70 from the overall control unit 40. However, the present invention is not limited to this, and it is sufficient that the same control can be performed. Needless to say.

  In the present embodiment, the audio outputs of the playback unit 60 and the playback unit 70 are not combined, but an option of combining according to the user's preference may be provided.

In this embodiment, the player determines the output form in the title & menu playback state. However, information specifying the output form is placed on the optical disc 10, and the overall control unit 40 controls the output form based on the information. It can also be easily realized. For example, the title playback screen and the menu playback screen are overlapped as shown in FIG. 4A, or not overlapped as shown in FIG. 4B, and the display positions and sizes of the menu playback screen and the title playback screen are changed. It is possible to specify. It is also possible to prohibit simultaneous display. In this way, it is possible to specify the display mode of the title playback screen and menu playback screen that matches the content.
In addition to the playback method disclosed in the present invention, the player is provided with means for allowing the user to switch between the playback method disclosed in the present invention and the existing playback method for users familiar with the existing playback method. Needless to say.

[Second Embodiment]
The second embodiment will be described below. For convenience of explanation, the same reference numerals are given to those having the same functions as those shown in the first embodiment, and the explanation thereof is omitted. Further, the terms defined in the first embodiment are used according to the definitions in this embodiment unless otherwise specified.

<System configuration>
FIG. 9 is a functional block diagram showing an outline of the configuration of the video disc player 2 according to the present embodiment.
The video disc player 2 is a device for reproducing data recorded on the optical disc 10 as in the first embodiment.

The difference between the present embodiment and the first embodiment is that output units 81 and 82 are provided for the respective output units 81 and 82 so that the output data of the playback units 60 and 70 can be output to another display device.
Data from the playback unit 60 that performs title playback is output to the output unit 81, and data from the playback unit 70 that performs menu playback is output to the output unit 82.

  As a result, the menu playback screen can be displayed on a display device different from the title playback screen, so that the menu playback display can be performed without affecting the title playback display.

  In the processing of this embodiment, the following processing is different from that of the first embodiment.

<Menu screen open / close processing>
FIG. 10A is a flowchart showing the flow of the menu screen opening process in this embodiment, and FIG. 10B is a flowchart showing the flow of the menu screen closing process.

First, the menu screen opening process will be described.
Since S61-S63 of Fig.10 (a) are the same as S41-S43 of Fig.8 (a), description is abbreviate | omitted.

  The overall control unit 40 transmits a UOP to the playback unit 70 to start menu playback, and simultaneously instructs the output unit 82 to open the menu screen (S64).

  In addition, the overall control unit 40 displays an OSD display on the output unit 81 indicating that the menu screen is displayed on another display device to an OSD (On-Screen Display) generation unit (not shown) during the menu screen opening process. An instruction signal is output so as to display (S65), and this process is terminated.

Next, the menu screen closing process will be described.
Also in this process, the description of the same process as in FIG.

What is different from FIG. 8B of the first embodiment is the processing of S72.
Since the video disc player 2 according to the present embodiment is provided with two output units 81 and 82, the general control unit 40 instructs the menu screen to be closed in S72. That is, the output unit 82 receives the output from the unit 70.

  With the above configuration, the title and the menu are reproduced on different display devices, and the menu can be displayed without hindering the user's viewing of the title.

Next, a screen display form in the title & menu playback state in this embodiment will be described.
FIG. 11 is an example of output of each of the output units 81 and 82 in the title & menu playback state in the present embodiment.

  FIG. 11A shows a display state on a display device connected to the output unit 81, and title reproduction and OSD display are performed. FIG. 9B shows a menu screen display in the display state of the display device connected to the output unit 82.

  In FIG. 11A, a title reproduction screen is displayed, and a display “Menu is being displayed on another television” is superimposed. As a result, the user can be alerted when the menu screen is displayed on a device different from the display device performing the title reproduction.

  In the unlikely event that the connection or setting of the display device that is to play the menu connected to the output unit 82 is incorrect and the menu screen is not displayed correctly, the menu screen is displayed on another display device to the user. It is possible to reduce the user's confusion that the menu is not displayed even though the menu button is pressed. Further, the OSD display is not limited to the above, and it may be displayed that the menu display cannot be performed because the connection or setting is not correct. In this case, the design may be such that the user is prompted to change the player settings so that only one screen is used.

[Third Embodiment]
The third embodiment will be described below. For convenience of explanation, the same reference numerals are given to those having the same functions as those shown in the first and second embodiments, and the explanation thereof is omitted. Further, the terms defined in the first and second embodiments are used in accordance with the definitions in the present embodiment unless otherwise specified.

<System configuration>
FIG. 12 is a functional block diagram showing an outline of the configuration of the video disc player 3 according to the present embodiment.
The video disc player 3 is a device for reproducing data recorded on the optical disc 10 as in the first and second embodiments.

  The difference between this embodiment and the first embodiment is that a read control unit 90 is provided between the playback units 60 and 70 and the disc read unit 20, and the menu holding unit 100 is added via the read control unit 90. It is.

  In the above configuration, processing different from the first and second embodiments in the present embodiment will be described.

  The reproduction units 60 and 70 receive the data read from the optical disc 10 by the disc reading unit 20 via the read control unit 90.

  In addition, when the reading control unit 90 receives a request for reading navigation data and presentation data constituting the menu from the playback unit 70, the reading control unit 90 reads the corresponding data from the optical disc via the disc reading unit 20, and temporarily holds the menu. Stored in the unit 100.

  The read control unit 90 starts outputting data to the reproduction unit 70 when the necessary data related to menu reproduction is completely stored in the menu holding unit 100.

  With such a configuration, in the title & menu playback state, it is not necessary to read the title and menu from the optical disk 10 in parallel, so that the disk reading unit 20 can be realized at the same speed reading speed. That is, since the rotational speed of the optical disk 10 can be reduced, it is possible to avoid problems such as increased noise / vibration and decreased response due to increased seek time, which are problems when the read speed is increased.

  In the present embodiment, when the read control unit 90 receives a read request for data constituting a menu during title reproduction, the corresponding data is stored in the menu holding unit 100. May be read at the time of loading and stored in the menu holding unit 100.

  In the above-described three embodiments, it is assumed that content is read from an optical disc, but the scope of application of the present invention is not limited thereto. For example, the content can be applied even if it is obtained through broadcasting or a network.

  Further, each block of the video disc players 1, 2, and 3 may be configured by hardware logic, or may be realized by software using a CPU (Central Processing Unit) as follows. . That is, the video disc players 1, 2, and 3 each include a CPU that executes instructions of a control program for realizing each function, a ROM (Read Only Memory) that stores the program, and a RAM (Random) that is used to operate the program. (Access Memory), a storage device (recording medium) such as a memory for storing the program and various data, and the like, and a program code (executable program, A recording medium in which an intermediate code program and a source program are recorded so as to be readable by a computer is supplied to the video disc player, and the computer (CPU, MPU (Micro Processing Unit)) There may read and execute the program code recorded in the recording medium.

  Examples of the recording medium include a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM / flash ROM.

  Further, the video disc player may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available.

  Further, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA and remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  Further, the playback apparatus, data playback method, control program, and recording medium of the present invention are not limited to the illustrated examples described above, and various changes can be made without departing from the scope of the present invention. It is.

It is a block diagram which shows schematic structure of the reproducing | regenerating apparatus in the 1st Embodiment of this invention. It is a block diagram which shows schematic structure of the reproducing part of the reproducing | regenerating apparatus which concerns on this invention. It is explanatory drawing which shows the state transition of the whole control part of the reproducing | regenerating apparatus which concerns on this invention. It is an example of the output image form to the display apparatus by the output part of the reproducing | regenerating apparatus in the 1st Embodiment of this invention. It is a flowchart which shows the flow of the whole process of the reproducing | regenerating apparatus based on this invention. It is a flowchart which shows the flow in which the whole control part of the reproducing | regenerating apparatus which concerns on this invention processes the operation information from a user operation part. It is a flowchart which shows the flow which the whole control part of the reproducing | regenerating apparatus concerning this invention handles the status notification received from the reproducing | regenerating part. It is a flowchart which shows the flow of the menu screen open / close process in the whole control part of the reproducing | regenerating apparatus based on this invention. It is a block diagram which shows schematic structure of the reproducing | regenerating apparatus in the 2nd Embodiment of this invention. It is a flowchart which shows the flow of the menu screen open / close process in the whole control part of the reproducing | regenerating apparatus in the 2nd Embodiment of this invention. It is an example of the output image form to the display apparatus by the output part of the reproducing | regenerating apparatus in the 2nd Embodiment of this invention. It is a block diagram which shows schematic structure of the reproducing | regenerating apparatus in the 3rd Embodiment of this invention.

Explanation of symbols

1, 2, 3 Video disc player 10 Optical disc 20 Disc reading unit 30 Status management unit 40 Overall control unit 50 User operation unit 60, 70 Playback unit 61 I / F with disc reading unit
62 I / F with overall control unit
63 Navigation manager 64 Presentation engine 80, 81, 82 Output unit 90 Reading control unit 100 Menu holding unit

Claims (14)

A playback device for playing back data including at least menu data and title data,
A data acquisition unit for acquiring the data,
A user operation unit that accepts user operations;
A first reproduction unit for reproducing the menu data and a second reproduction unit for reproducing the title data;
A state management unit that receives a state notification indicating a reproduction state from the first reproduction unit and the second reproduction unit and stores and manages the reproduction state of the data;
A control unit for controlling the reproduction of the data,
The controller is
Analyzing the operation information from the user operation unit and the playback state information from the state management unit,
When the playback state of the data is a state in which the menu data and the title data are played back simultaneously, the control unit sends a title end status notification from the second playback unit or in the title data. When receiving a notification that the menu is valid , the playback apparatus controls the first playback unit to end the playback of the menu data . A playback device including at least menu data and title data, wherein the menu data includes playback of data including commands,
A data acquisition unit for acquiring the data;
A user operation unit that accepts user operations;
A first reproduction unit for reproducing the menu data and a second reproduction unit for reproducing the title data;
A state management unit that receives a state notification indicating a reproduction state from the first reproduction unit and the second reproduction unit and stores and manages the reproduction state of the data;
A control unit for controlling the reproduction of the data,
The controller is
  The operation information from the user operation unit and the data reproduction state information from the state management unit are analyzed, and both the menu data and the title data are in the reproduction state, and the operation information instructs the command execution. If
  Causing the first playback unit to execute a command and causing the control unit to output a status notification regarding command execution;
  A playback apparatus that causes only the second playback unit to play back based on the state notification output by the first playback unit. When the menu data command relates to the control of the reproduction start position of the title data, the control unit controls the second reproduction unit to reproduce from the start position. The reproducing apparatus according to claim 2 , wherein the reproducing apparatus is characterized. When the menu data command relates to the control of the playback state of the title data, the control unit controls the second playback unit to change the playback state. The playback apparatus according to claim 2 . An output unit that combines and outputs data acquired from the first reproduction unit and the second reproduction unit, and the control unit determines a reproduction state of the data and controls an output form from the output unit The playback apparatus according to any one of claims 1 to 4, wherein: A first output unit and a second output unit configured to obtain and output data from each of the first reproduction unit and the second reproduction unit, the control unit determines a reproduction state of the data, and The playback apparatus according to any one of claims 1 to 5, wherein output modes from the first output unit and the second output unit are controlled. When the playback state of the data is a state in which the menu data and the title data are played back simultaneously, the control unit displays a display regarding the playback state of the menu on the second output unit that outputs the title. The playback apparatus according to claim 6 , wherein the playback apparatus is controlled to perform the playback. Wherein the control unit, the operation information from the user operation unit, it any one of claims 1 to 7, characterized in that transmitted distributed to the second reproduction unit and the first reproduction unit The playback device described in 1. 2. The recording apparatus according to claim 1, further comprising a recording unit that stores the menu data, wherein the first reproduction unit acquires the menu data from the data acquisition unit or the recording unit and reproduces the menu data. The playback device according to claim 8 . When reproducing the menu data and the title data, the control unit controls at least one of the possibility of simultaneous reproduction of the menu data and the title data, a display position, a display size, or a display ratio. reproducing apparatus according to any one of claims 1 to 9, characterized in that. A data reproduction method for reproducing data including at least menu data and title data,
A data acquisition step of acquiring the data;
A user operation step for accepting a user operation;
A state management step of receiving a state notification indicating a playback state from a first playback unit for playing back the menu data and a second playback unit for playing back the title data, and storing and managing the playback state of the data; ,
When the operation information received in the user operation step and the reproduction state information stored in the state management step are analyzed, and the reproduction state of the data is a state of simultaneously reproducing the menu data and the title data When the notification of the title end status or the status notification for enabling the menu in the title data is received from the second playback section, the first playback section ends the playback of the menu data. Control steps;
A data reproduction method comprising: A data reproduction method including at least menu data and title data, wherein the menu data includes reproduction of data including commands,
A data acquisition step of acquiring the data;
A user operation step for accepting a user operation;
A state management step of receiving a state notification indicating a playback state from a first playback unit for playing back the menu data and a second playback unit for playing back the title data, and storing and managing the playback state of the data; ,
  The first playback unit executes the command and outputs a status notification related to command execution to the control unit. The operation information received in the user operation step and the playback state information stored in the state management step And controlling the first reproduction unit and the second reproduction unit to reproduce the menu data and the title data, respectively, and based on the status notification, the second reproduction unit Control steps to control;
A data reproduction method comprising: A control program for causing a computer to execute the data reproduction method according to claim 11 . A recording medium in which the control program according to claim 13 is recorded so as to be readable by a computer.

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