KR101660722B1 - Apparatus for reproducing recording medium and method for monitoring av output - Google Patents

Abstract

A recording medium playback apparatus and a video output monitoring method are disclosed. The interface unit provides video output (AV Output). The control unit generates and registers a listener instance that receives video output status information, which is information on the status of the video output (AV Output), monitors whether the status of the video output (AV Output) is changed, When the status is changed, an event instance for notifying the video output status information is generated, and the generated event instance is transmitted to the registered listener instance. According to the recording medium playback apparatus and the video output monitoring method according to the present invention, it is possible to check the status of the video output, prevent the playback of the content without executing the external display, Can be detected.

Recording medium, playback, video output, listener, event

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a recording medium reproducing apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for reproducing data stored in a recording medium or storage, and more particularly, to an apparatus and method for reproducing a title stored in a recording medium or storage.

An optical disk capable of recording a large amount of data as a recording medium is widely used. In recent years, a new high-density recording medium such as a high-density digital versatile disc (HD-DVD) and a high-definition digital versatile disc (BD) capable of recording and storing high-quality video data and high- : Blu-ray Disc) are being developed.

In particular, HD-DVD is a high-definition DVD based on Toshiba's and NEC's Advanced Optical Disc (AOD) technology as the next generation DVD standard. Single layer HD-DVDs can store 15GB of data, dual layer HD-DVDs can store 30GB, and HD-DVDs have 4 to 7 times the storage capacity of existing DVDs. In addition, because HD-DVD can store large capacity using 405nm wavelength blue laser, existing 480p DVD can not support resolution of high definition television (HDTV) with resolution of 1,080i / p, Resolution can be provided.

The high-density recording medium, which is a next generation recording medium technology, is a next-generation optical recording solution capable of providing data that significantly surpasses conventional DVDs, and has recently been developed along with other digital devices. In addition, development of an optical recording and reproducing apparatus using a high-density recording medium standard has been started.

With the development of the high-density recording medium and the optical recording and reproducing apparatus, it is possible to record titles having various attribute data as contents, for example, Advanced Content based on XML, and Titles enabling high interactivity based on Java platform And reproduction are also becoming possible.

However, it is a fact that it is difficult to develop a completed optical recording / reproducing apparatus because the specification of a high density recording medium is not fully completed yet.

Particularly, the optical recording and reproducing apparatus should take into consideration not only a basic function of recording and reproducing a high density recording medium, but also an additional function considering the integrated use of the peripheral related digital apparatus. In general, it is considered that a function of receiving an external input signal, controlling the reproduction by using it or using it, or reproducing the external input signal by using the contents recorded on the high density recording medium together.

However, in the current high-density recording medium-related standards, there are no standardized specifications for achieving the above-mentioned additional functions, and therefore, there is a great limitation in developing an optical recording and reproducing apparatus based on a full-scale high-density recording medium.

SUMMARY OF THE INVENTION The present invention provides a recording medium playback apparatus and a video output monitoring method capable of knowing a state of a video output (AV Output).

According to another aspect of the present invention, there is provided a recording medium playback apparatus and a video output monitoring method capable of checking the status of a video output (AV Output) in real time.

According to another aspect of the present invention, there is provided a computer-readable recording medium storing a program for causing a computer to execute a method.

According to another aspect of the present invention, there is provided a video output monitoring method comprising: generating a listener instance for receiving video output status information on a status of a video output (AV Output) Monitoring whether the state of the video output (AV Output) is changed; and generating an event instance informing the video output state information when the state of the video output (AV Output) is changed, And delivering the event instance to the registered listener instance. Here, the AV output may include at least one of a composite output, a component output, an HDMI (High-Definition Multimedia Interface) output, and a USB (Universal Serial Bus) output.

Also, the state of the video output (AV Output) may be one of a connection state and a separation state. Here, the connection state may be a state in which the external display device can receive an image from the video output terminal, and the state of separation may be a state in which the external display device can not receive the image from the video output terminal.

Preferably, the video output monitoring method further includes acquiring a video output manager instance managing the video output (AV Output).

Preferably, in the registering step, the listener instance may be registered using a method provided by the obtained video output manager instance. Here, the video output manager instance includes a composite attribute, a COMPONENT attribute, an HDMI attribute, a USB attribute, an instance acquisition method, an addAVOutputListener method, ), A listener remove method (removeAVOutputListener method), and an isAttached method.

Preferably, the video output monitoring method further includes receiving a request for the video output status information.

According to another aspect of the present invention, there is provided a recording medium reproducing apparatus comprising: an interface for providing an AV output; and an image output unit for outputting image output status information, which is information on the status of the AV output, And a controller for generating and registering a listener instance to be received and monitoring whether the state of the video output (AV Output) is changed. If the state of the video output (AV Output) is changed, And transmitting the generated event instance to the registered listener instance. Here, the AV output may include at least one of a composite output, a component output, an HDMI (High-Definition Multimedia Interface) output, and a USB (Universal Serial Bus) output.

Also, the state of the video output (AV Output) may be one of a connection state and a separation state. Here, the connection state may be a state in which the external display device can receive an image from the video output terminal, and the separated state may be a state in which the external display device can not receive an image from the video output terminal.

Preferably, the controller may generate a video output manager instance for managing the video output (AV Output). Here, the video output manager instance includes a COMPOSITE attribute, a COMPONENT attribute, an HDMI attribute, a USB attribute, an instance acquisition method, a listener registration method (addAVOutputListener method, a removeAVOutputListener method, and an isAttached method.

Preferably, the controller may register the listener instance using a method provided by the video output manager instance.

According to another aspect of the present invention, there is provided a method of monitoring a video output (AV Output) for outputting video data to an external display device, the method comprising: And stopping the execution of the BD-J title and transmitting a boot request signal to the external display device when the state of the video output (AV Output) is in a separate state.

According to another aspect of the present invention, there is provided a recording medium reproducing apparatus for providing a video output (AV Output) for outputting image data to an external display device, And a control unit for stopping the execution of the BD-J title and transmitting a boot request signal to the external display device when the state of the video output (AV Output) is in a separate state, Respectively.

According to the recording medium playback apparatus and the video output monitoring method of the present invention, it is possible to check the status of the video output (AVOutput), thereby preventing the playback of the content in a state in which the external display apparatus is not running, (AVOutput) can be detected.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The configuration and operation of the present invention shown in the drawings and described by the drawings are described as at least one embodiment, and the technical idea, the core configuration and the operation of the present invention are not limited thereby.

Although the terms used in the present invention have been selected in consideration of the functions of the present invention, it is possible to use general terms that are currently widely used, but this may vary depending on the intention or custom of a person skilled in the art or the emergence of new technology. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, it is to be understood that the term used in the present invention should be defined based on the meaning of the term rather than the name of the term, and on the contents of the present invention throughout.

The recording medium used in the present invention may be an optical disc, for example, a DVD, a Blu-ray Disc (BD), an HD-DVD, or a Near Field Recording (NFR) disc. For convenience of explanation, the recording medium is a Blu-ray Disc (BD) as an example. However, the technical idea of the present invention is not limited to the HD-DVD and other recording media.

In the present invention, "storage" means a storage means provided in the recording medium reproduction apparatus of FIG. 1, and means an element that a user can arbitrarily store and utilize necessary information and data. In particular, currently commonly used storage devices include, but are not limited to, "hard disk", "system memory", "flash memory" and the like.

Specifically, "Storage" is also used as a means for storing data associated with a recording medium. Generally, the data associated with the recording medium stored in the storage may include data downloaded from the outside.

It is also possible to directly read some permitted data from the recording medium or to generate system data (e.g., metadata) related to reproduction of data recorded on the recording medium and store the data in the storage It is obvious.

The term "original data" refers to data recorded in a recording medium. "Additional data" refers to data related to a recording medium among data stored in the storage, . Since each piece of data is only classified according to the method of acquisition, any attribute data existing outside the optical disc and associated with the original data can be referred to as customized data.

The "Title" used below refers to a playback unit that forms an interface with a user. Each title is linked with a specific object, and a stream related to the title recorded in the disc is reproduced according to a command in the object or a program. In particular, in the present invention, for convenience of description, titles in which moving pictures, movies, and interactive information recorded in an MPEG2 (MPEG2) compression scheme recorded in a disc are recorded are referred to as "HDMV titles" Quot; BD-J title ") recorded on the moving picture, movie, and interactive information executed by the " Java " program.

The "main data" used here means audio / video data belonging to a title (for example, 'movie title') recorded in the recording medium by the disc creator. In general, the main data is recorded in the MPEG2 format and is referred to as "AV stream" or "main AV stream ".

Hereinafter, "supplementary data " used herein refers to all data used in reproduction of" main data ", for example, auxiliary data includes a text subtitle stream, an interactive graphics stream, Audio streams (e.g., applied to browsable slideshows), and the like. The auxiliary data can be recorded in the MPEG2 format or can be recorded in another format. It is also possible that the auxiliary data is multiplexed in the main AV stream or exists as an independent data file in the recording medium.

"Subtitle" means caption information corresponding to a video or image to be reproduced, which is expressed in a specific language. For example, when a user views an image on a display screen and selects any one of a plurality of subtitles provided in various languages, subtitle information corresponding to the selected subtitle is provided on one side of the display screen. If the displayed subtitle information is composed of character data, the selected subtitle is referred to as a "text subtitle ". In the present invention, the term "MPEG2 format" means performing encoding and decoding according to an internationally accepted standard according to the ISO / IEC-1318 standard. According to the present invention, a plurality of text subtitle streams can be recorded in the recording medium in the MPEG2 format, and can exist as a plurality of independent stream files. Each text subtitle stream file is created and recorded in a recording medium.

Each of the above-described techniques may be replaced with terms that express the same function.

1 is a block diagram showing an embodiment of an integrated use between a recording medium reproducing apparatus and a peripheral device according to the present invention.

Referring to FIG. 1, a recording medium reproducing apparatus 10 according to the present invention can record or reproduce optical disks of various standards. Further, it can be designed to record / reproduce an optical disc of a specific standard (e.g., BD). In addition, the recording medium reproducing apparatus 10 can only reproduce the optical disk. However, in consideration of the connection between the Blu-ray Disc (BD) and the peripheral device to be solved in the present invention, a BD-player (BD-player) or Blu-ray Disc (BD) (BD-recorder) to be reproduced will be described as an example. It is a well-known fact that the recording medium reproducing apparatus 10 of the present invention can be a "drive"

In addition to the function of recording / reproducing the recording medium 30, the recording medium reproducing apparatus 10 of the present invention receives an external input signal, processes the signal, and transmits the signal to a user through another external display device 20 Function. In this case, there is no particular limitation on the external input signal, but a digital multimedia broadcasting (DMB) and an Internet signal can be representative external input signals. Particularly, in the case of the Internet, it is possible to download specific data on the Internet through the recording medium reproducing apparatus 10 as a medium which can be readily accessed by anyone.

The original data and the local data will be described in detail as follows. For example, a multiplexed AV stream for a specific title may be recorded as the original data recorded in the recording medium 30, and an audio stream of original data (e.g., Korean) may be recorded as the alternate data on the Internet. (For example, English) is provided as the specific data for playback along with the AV stream which is the original data depending on the user, or if an audio stream (for example, English) There may be a request to download an audio stream (e.g., English) for playback. In order to enable this, a systematic method of defining association between original data and individual data, and managing / reproducing these data according to the user's demand is provided. That is, a file structure can be provided between the original data and the local data in order to realize the user's request.

2 is a block diagram showing a configuration of a preferred embodiment of a recording medium reproducing apparatus according to the present invention.

2, the recording medium playback apparatus 10 includes a pickup 11, a control unit 12, a signal processing unit 13, a servo 14, a storage 15, a microcomputer 16, a playback system 17, An AV encoder 18, and an interface unit 19.

The pickup 11 reads original data and reproduction management file information recorded on the optical disc from the optical disc. To this end, the pickup 11 may perform focusing and tracking, and may incorporate an actuator for performing focusing and tracking.

The servo 14 controls the operation of the pickup 11. That is, the servo 14 controls the focusing and tracking of the pickup 11 so that the reproduction signal associated with the original data or reproduction management file information requested by the recording medium reproducing apparatus 10 can be read out from the recording medium 30 .

The signal processing unit 13 reconstructs the reproduction signal received from the pickup 11 to a desired signal value or modulates the signal to be recorded into a signal to be recorded on the recording medium 30 and outputs the modulated signal to the pickup 11 . That is, the signal processing unit 13 can restore the reproduction signal associated with the original data or the reproduction management file information received from the pickup 11 and output the restored signal to the control unit 12, the reproduction system 17, and the AV encoder 18.

The microcomputer 16 controls the operation of the signal processor 13 and the signal processor 13. Here, the function of the microcomputer 16 may be performed by the control unit 12.

The control unit 12 downloads the external data existing outside the recording medium 30 by a user command or the like and stores the external data in the storage 15 and stores the original data in the storage medium 30 and / It is possible to control to reproduce the channel data according to the user's request.

The control unit 12 can also control to control the text subtitle stream and reproduce the decoded text subtitle according to the reproducible information stored in the reproduction system 17. [

The reproduction system 17 finally decodes the data according to the control of the control unit 12 and provides it to the user. The playback system 17 includes a player model 17a for deciding a playback direction by interpreting an object command or application and a user command input through the control unit 12 in association with the playback of the specific title, And an AV decoder 17b. The reproduction system 17 can also output the decoded AV data to the interface unit 19. [ The reproduction system 17 will be described again in detail in FIG.

The AV encoder 18 converts an input signal into a signal of a specific format, for example, an MPEG2 transport stream under the control of the control unit 12, 13).

3 is a diagram showing a hierarchical structure of a preferred embodiment of a reproduction system according to the present invention.

Referring to FIG. 3, the term "playback system" means a set of playback processing means composed of programs (software) and / or hardware provided in the recording medium playback apparatus. Means a system for playing back and managing data (for example, downloaded from the outside) together with the recording medium in addition to playing back the recording medium loaded in the recording medium playback apparatus.

In particular, the playback system 17 includes a user event manager 171, a module manager 172, a metadata manager 123, an HDMV module 174, A BD-J module 175, a playback control engine 176, a presentation engine 177, and a virtual file system 40, .

First, the HDMV module 174 for the HDMV title and the BD-J module 175 for the BD-J title are independently configured as separate playback process management means for playing back the HDMV title and the BD-J title do. The HDMV module 174 and the BD-J module 175 have a control function for receiving a command or a program in the aforementioned object (Movie Object or BD-J Object) and processing it. The metadata manager 173 can perform title selection at any time under the control of the user and can provide the recording medium and title metadata to the user. The HDMV module 174 and the BD-J module 175 separate commands or applications from the hardware configuration of the playback system to enable portability of commands or applications. A command processor 174a is provided in the HDMV module 174 and a Java VM is installed in the BD-J module 175 as a means for receiving and processing a command or an application. (175a) and an application manager (175b), respectively.

The Java virtual machine 175a is a "virtual machine" The application manager 175b includes an application management function for managing the lifecyle of the application.

A module manager 172 for controlling the operation of the HDMV module 174 and the BD-J module 175 as well as transmitting a user command to the HDMV module 174 and the BD-J module 175; .

And a playback control engine 176 for analyzing PlayList file information recorded in the disc according to a playback command of the HDMV module 174 and the BD-J module 175 and performing a playback function according to the information. In addition, a presentation engine 177 for decoding and displaying a specific stream reproduced / managed by the playback control engine 176 is provided. In particular, the playback control engine 176 includes Playback Control Functions 176a, Player Status Registers (PSR), and General Purpose Registers (Player Registers) 176b for storing GPRs. In some cases, the playback control function 176a may also refer to the playback control engine 176.

In the present invention, the player register 176b is a memory unit for indicating the reproduction state of the second video.

HDMV titles and BD-J titles receive user commands in a separate manner, and the way in which user commands are executed is independent of each other. Means for receiving the user command and delivering it to either the HDMV module 174 or the BD-J module 175 is required, which is handled by the user event manager 171. If the received command is a user command by a user operation (UO), the user event manager 171 transmits the received command to the module manager 172 or the UO controller (UO Controller) 171a, If the received command is a user event by a key event, it is transmitted to the Java virtual machine 175a in the BD-J module 175 to execute a user command.

In addition, the playback system 17 of the present invention may include a metadata manager 173, which provides the user with a disk library and an enhanced search metadata application (Disc Library and Enhanced Search Metadata application) .

The module manager 172, the HDMV module 174, the BD-J module 175, and the playback control engine 176 in the above-described playback system of the present invention are each capable of software processing. It is usually more useful to design software rather than hardware configuration. However, the presentation engine 177, the decoder and the plane (video, graphics, etc.) are generally designed in hardware. In particular, in the case of software-processed components (e.g., 172, 174, 175, 176), it may be configured as a part of the control. The configuration of the present invention should be understood as its meaning and is not limited to a hardware configuration or a software configuration.

FIG. 4 is a diagram showing a configuration of a preferred embodiment of the interface unit according to the present invention.

Referring to FIG. 4, the interface unit 19 provides AV output. That is, the interface unit 19 receives the AV data output from the playback system 17 and outputs the AV data to the external display device 20 connected to the AV output terminal. Here, the AV output may include at least one of a composite output, a component output, an HDMI (High-Definition Multimedia Interface) output, and a USB (Universal Serial Bus) output. To this end, the interface unit 19 may include a composite output terminal, a component output terminal, an HDMI (High-Definition Multimedia Interface) output terminal, and a USB (Universal Serial Bus) output terminal. Also, the recording medium playback apparatus 10 may be capable of wireless communication with the external display device 20 through a USB (Universal Serial Bus) output. At this time, the recording medium reproducing apparatus 10 can communicate with the external display device 20 based on the Bluetooth and Wi-Fi protocols.

FIG. 5 is a diagram illustrating a preferred embodiment of the API of the AVOutputManager class according to the present invention.

Referring to FIG. 5, the AVOutputManager includes a COMPOSITE attribute, a COMPONENT attribute, an HDMI attribute, a USB attribute, an instance acquisition method, an addAVOutputListener method, ), A listener remove method (removeAVOutputListener method), and an isAttached method.

Here, the COMPOSITE attribute, the COMPONENT attribute, the HDMI attribute, and the USB attribute may vary depending on the AV output provided by the recording medium playback apparatus 10 . For example, when the recording medium playback apparatus 10 provides only a composite output, a component output, and an HDMI (High-Definition Multimedia Interface) output, the AVOutputManager may include a composite attribute, COMPONENT attribute) and an HDMI attribute (HDMI attribute).

The composite attribute indicates the composite output, which is defined as a public static int type and assigned a value of '0'.

The component attribute indicates the component output, which is defined as a public static int type and assigned a value of '1'.

The HDMI attribute indicates the HDMI output, which is defined as a public static int type and assigned a value of '2'.

The USB attribute indicates the USB output, defined as a public static int type and assigned a value of '3'.

The instance acquisition method is an application programming interface (API) that returns an instance of AVOutputManager, which is defined as AVOutputManager type and returns an instance of AVOutputManager.

The listener registration method is an API used to dynamically determine that the video output state is changed. It is defined as a public void type and has an AVOutputListener object as a parameter. Here, AVOutputListener is a listener class for receiving video output status information, and AVOutputListener can be implemented in an application and an instance of AVOutputListener can be created. The listener registration method registers an instance of AVOutputListener which is passed as a parameter.

An application can create an AVOutputListener instance and register an instance of AVOutputListener that it created using the listener registration method. For example, an application can register AVOutputListener 1 by creating an AVOutputListener instance, AVOutputListener 1, and executing AVOutputManager.addAVOutputListener (AVOutputListener 1).

The listener removal method is an API used to remove a registered AVOutputListener. It is defined as a public void type and has an AVOutputListener object as a parameter. If the AVOutputListener instance passed as a parameter here is not registered or valid, it is ignored.

An application can remove a registered AVOutputListener instance using the listener removal method. For example, an application can remove a registered AVOutputListener 1 by executing AVOutputManager.removeAVOutputListener (AVOutputListener 1).

The mount confirmation method is a method used to check the state of the video output (AV output) and is defined as a public boolean type. The mount confirmation method returns information about whether the AV output is connected. For example, if the AV output state is connected, the mount confirmation method returns "TRUE", otherwise it returns "FALSE".

FIG. 6 is a diagram illustrating an example of an API of the AVOutputListener interface according to the present invention.

Referring to FIG. 6, an AVOutputListener is defined as an interface type and includes a stateChange (AVOutputEvent event) method. As AVOutputListener defines the interface type, an application can implement a class of AVOutputListener by inheriting AVOutputListener. AVOutputListener is used to know the status of video output (AV Output) in real time. In other words, AVOutputListener should be implemented where you want to know the status of video output in real time.

The stateChange (AVOutputEvent event) method, when the state of the video output (AV Output) changes, sends the event to the application. It is defined as void type and has an AVOutputEvent object as a parameter. Where the AVOutputEvent object can be either AVOutputAttachedEvent or AVOutputDetachedEvent.

FIG. 7 is a diagram illustrating a preferred embodiment of the API specification of AVOutputEvent, AVOutputAttachedEvent, and AVOutputDetachedEvent according to the present invention.

Referring to FIG. 7, AVOutputEvent is an event class for informing the video output state information. When the state of the AV output is dynamically changed, an AVOutputEvent object is generated. AVOutputEvent is defined as a public class type, inherits from java.util.EventObject, and contains an AVOutputEvent (int type) constructor and a getType () method. AVOutputEvent is used in AVOutputListener.

AVOutputEvent (int type) The constructor creates an AVOutputEvent object corresponding to the type passed in as a parameter, including the type as a parameter. Here, the type indicates one of the types of AV output provided by the playback apparatus 10. For example, the type may indicate either a composite output, a component output, an HDMI output, and a USB line.

The getType () method tells you the type of the AVOutputEvent object, which is defined as a public int type and returns the AVOutputType of the AVOutputEvent object. Where AVOutputType can be either Composite output, Component output, HDMI output, or USB output.

When the state of the video output (AV Output) is dynamically changed, the middleware may generate an AVOutputEvent instance and transmit the generated AVOutputEvent to the application that registered the AVOutputListener instance using the AVOutputListener.stateChange (AVOutputEvent event) method.

AVOutputAttachedEvent occurs when the video output changes from disconnected to connected. AVOutputAttachedEvent is defined as a public class type, inherits from AVOutputEvent, and contains the AVOutputAttachedEvent (int type) constructor. Here, the connection state is a state in which the external display device 20 can receive an image from the video output terminal, and the state in which the external display device 20 can not receive an image from the video output terminal. The separated state may include a state in which the external display device 20 is separated from the video output terminal or a state in which the power of the external display device 20 is turned off.

AVOutputAttachedEvent (int type) The constructor creates an AVOutputAttachedEvent object that contains the type as a parameter and corresponds to the type passed in as a parameter. Here, the type indicates one of the types of AV output provided by the playback apparatus 10. For example, the type may indicate either a composite output, a component output, an HDMI output, or a USB output.

AVOutputDetachedEvent occurs when the state of the video output (AV Output) is changed from the connected state to the separated state. AVOutputDetachedEvent is defined as a public class type, inherits from AVOutputEvent and contains a constructor for AVOutputDetachedEvent (int type).

AVOutputDetachedEvent (java.lang.Object source) The constructor creates an AVOutputDetachedEvent object that contains the type as a parameter and corresponds to the type passed in as a parameter. Here, the type indicates one of the types of AV output provided by the recording medium reproducing apparatus 10. [ For example, the type may indicate either a composite output, a component output, an HDMI output, or a USB output.

If the AVOutputAttachedEvent is received via the registered AVOutputListener, the application can know that the video output has changed from the detached state to the connected state. Also, if an AVOutputDetachedEvent is received via the registered AVOutputListener, the application can know that the video output has changed from the connected state to the disconnected state.

FIG. 8 is a sequence diagram of a preferred embodiment of a video output monitoring method according to the present invention.

Referring to FIG. 8, the application 810 executes a getInterface () to obtain a reference of the AVOutputManager instance 820 (S800). Where AVOutputManager instance 820 may be included in the BD-J module 175 of FIG. 3 or may be a corresponding component.

The application 810 executes AVOutputManager.isAttached () to obtain the video output state information of the corresponding video output (S802). In this case, if the video output state is the separated state, the application can stop the execution of the BD-J title until the video output state is changed to the connected state. The application can also cause the external display device 20 to boot using the video output. At this time, the recording medium reproducing apparatus 10 can transmit a boot request signal to the external display device 20 using the HDMI output, and can transmit the boot request signal to the external display device 20 using the USB output.

The application 810 creates an AVOutputListener instance 830, which is an instance of a class that implements the AVOutputListener interface (S804). Then, the application 810 registers AVOutputListener instance 830 generated by executing AVOutputManager.addAVOutputListener (AVOutputListener) (S806).

When the state of the video output (AV Output) is changed, the AVOutputManager instance 820 generates an AVOutputEvent object as an event instance informing the video output state information, and outputs AVOutputListener.stateChanged (AVOutputEvent event) method of the registered AVOutputListener AVOutputEvent event) to be transmitted to the application 810 (S808). Here, when it is detected that the state of the video output (AV Output) is changed from the separated state to the connected state, the AVOutputManager instance 820 can generate AVOutputAttachedEvent as an event instance informing the video output state information. The AVOutputManager instance 820 can then deliver the generated AVOutputAttachedEvent instance to the AVOutputListener instance 830 by executing AVOutputListener.stateChange (AVOutputAttachedEvent).

Also, when it is detected that the state of the video output (AV Output) is changed from the connected state to the separated state, the AVOutputManager instance 820 can generate AVOutputDetachedEvent as an event instance informing the video output state information. Then, the AVOutputManager instance 820 can deliver the generated AVOutputDetachedEvent instance to the AVOutputListener instance 830 by executing AVOutputListener.stateChange (AVOutputDetachedEvent).

The application 810 executes the AVOutputManager.removeRCInterfaceListener (AVOutputListener) to remove the registered AVOutputListener instance 830 (S810).

FIG. 9 is a flowchart illustrating a method of monitoring a video output according to an exemplary embodiment of the present invention. Referring to FIG.

Referring to FIG. 9, the application obtains a video output manager instance (S900). Where the video output manager instance may be generated by the playback system 17. The video output manager class may be AVOutputManager shown in FIG.

The application requests the video output status information and obtains the video output status information (S910). Here, the application can acquire the video output state information using the acquired method of the video output manager instance. For example, AVOutputManager.isAttached (type) shown in FIG. 5 can be used to acquire video output status information. Here, it is possible to input a value indicating the type of AV output desired to acquire the video output status information by a type which is a parameter of AVOutputManager.isAttached. For example, the COMPOSITE output may input 0, the COMPONENT output may be 1, the HDMI output may be 2, and the USB output may be 2.

In this case, if the video output state is the separated state, the application can stop the execution of the BD-J title until the video output state is changed to the connected state. The application can also cause the external display device 20 to boot using the video output. At this time, the recording medium reproducing apparatus 10 can transmit a boot request signal to the external display device 20 using the HDMI output, and can transmit the boot request signal to the external display device 20 using the USB output.

The application creates a listener instance that receives the video output status information, which is information on the status of the video output (AV Output) (S920). The class of the generated listener instance may be the AVOutputListener shown in FIG.

The application registers the created listener instance (S930). Here, the application can register the listener instance using the method provided by the video output manager instance. For example, AVOutputManager.addAVOutputListener (AVOutputListener listener) shown in FIG. 5 can be used to register a listener instance.

The reproduction system 17 monitors whether the state of the video output (AV Output) is changed (S940). Here, the playback system 17 may monitor at least one video output. For example, the playback system 17 may monitor the composite output, component output, HDMI output, and USB output.

The reproduction system 17 confirms whether the state of the video output (AV Output) is changed (S950).

When the state of the video output (AV Output) is changed, the playback system 17 generates an event instance informing the video output state information and delivers the generated event instance to the listener instance registered by the application (S960). Here, the event instance informing the video output state information may be any one of AVOutputAttachedEvent instance and AVOutputDetachedEvent shown in FIG.

If it is detected that the video display device 20 is connected to the video output terminal and the state of the video output (AV Output) is changed from the separated state to the connected state, the playback system 17 notifies the video output state information Creates an AVOutputAttachedEvent with the event instance.

If it is detected that the power of the video display device 20 is turned off or the video display device 20 is disconnected from the video output terminal and the state of the video output (AV Output) is changed from the connected state to the separated state, (17) generates AVOutputDetachedEvent as an event instance informing the video output state information.

The playback system 17 delivers the generated event instance to the registered listener instance (S970). Here, the middleware 380 can forward the event instance to the corresponding listener instance using the method of the listener instance. For example, the AVOutputListener.stateChange method shown in FIG. 6 can be used to deliver an event instance to a corresponding listener instance. The application can determine the state of the video output (AV Output) through the event instance delivered to the listener instance.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer apparatus is stored. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission via the Internet) . The computer-readable recording medium may also be distributed to networked computer devices so that computer readable code can be stored and executed in a distributed manner.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the embodiment in which said invention is directed. It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing an embodiment of an integrated use between a recording medium reproducing apparatus and a peripheral device according to the present invention; Fig.

2 is a block diagram showing a configuration of a preferred embodiment of a recording medium reproducing apparatus according to the present invention.

Figure 3 illustrates a hierarchical structure of a preferred embodiment of a playback system according to the present invention;

4 is a diagram showing a configuration of a preferred embodiment of the interface unit according to the present invention.

FIG. 5 is a diagram illustrating a preferred embodiment of the API specification of the AVOutputManager class according to the present invention.

FIG. 6 is a diagram illustrating a preferred embodiment of an API of the AVOutputListener interface according to the present invention.

FIG. 7 illustrates a preferred embodiment of an API specification of AVOutputEvent, AVOutputAttachedEvent, and AVOutputDetachedEvent according to the present invention.

FIG. 8 is a sequence diagram of a preferred embodiment of a video output monitoring method according to the present invention, and FIG.

FIG. 9 is a flowchart illustrating a method of monitoring a video output according to an exemplary embodiment of the present invention. Referring to FIG.

Claims (17)

Claim 1 has been abandoned due to the setting registration fee. Generating a listener instance that receives video output status information, which is information on a status of a video output (AV Output), and registering the generated listener instance; Monitoring whether the state of the video output (AV Output) is changed; And And generating an event instance informing the video output state information when the state of the video output (AV Output) is changed, and delivering the generated event instance to the registered listener instance Video output monitoring method. Claim 2 has been abandoned due to the setting registration fee. The method according to claim 1, Wherein the video output includes at least one of a composite output, a component output, an HDMI (High-Definition Multimedia Interface) output, and a USB (Universal Serial Bus) output. Way. Claim 3 has been abandoned due to the setting registration fee. The method according to claim 1, Wherein the state of the video output (AV Output) is one of a connection state and a separation state. Claim 4 has been abandoned due to the setting registration fee. Wherein the connection state is a state in which an external display apparatus can receive an image from a video output terminal, and the state in which the external display apparatus can not receive an image from a video output terminal. Claim 5 has been abandoned due to the setting registration fee. The method according to claim 1, Further comprising the step of acquiring a video output manager instance managing the video output (AV Output). Claim 6 has been abandoned due to the setting registration fee. 6. The method of claim 5, In the registering step, And registering the listener instance using a method provided by the obtained video output manager instance. Claim 7 has been abandoned due to the setting registration fee. 6. The method of claim 5, The video output manager instance includes: A COMPONENT attribute, an HDMI attribute, a USB attribute, an instance acquisition method (getInstance method), a listener registration method (addAVOutputListener method), a removeAVOutputListener method And an isAttached method. ≪ Desc / Clms Page number 19 > Claim 8 has been abandoned due to the setting registration fee. The method according to claim 1, Further comprising receiving a request for the video output status information. An interface unit for providing a video output (AV Output); And (AV Output); and a controller for generating and registering a listener instance for receiving video output status information, which is information on the status of the video output (AV Output), monitoring whether the video output (AV Output) And a control unit for generating an event instance informing the video output state information when the state of the registered event information is changed and delivering the generated event instance to the registered listener instance. 10. The method of claim 9, Wherein the video output includes at least one of a composite output, a component output, an HDMI (High-Definition Multimedia Interface) output, and a USB (Universal Serial Bus) output. Device. 10. The method of claim 9, Wherein the state of the video output (AV Output) is one of a connection state and a separation state. 12. The method of claim 11, Wherein the connection state is a state in which the external display device can receive an image from the video output terminal and the state in which the external display device can not receive an image from the video output terminal. 10. The method of claim 9, Wherein, And generates a video output manager instance for managing the video output (AV Output). 14. The method of claim 13, Wherein, And registers the listener instance using a method provided by the video output manager instance. 14. The method of claim 13, The video output manager instance includes: A COMPONENT attribute, an HDMI attribute, a USB attribute, an instance acquisition method (getInstance method), a listener registration method (addAVOutputListener method), a removeAVOutputListener method And an isAttached method. ≪ Desc / Clms Page number 19 > Claim 16 has been abandoned due to the setting registration fee. The method according to claim 1, And stopping the execution of the BD-J title and transmitting a boot request signal to the external display device when the state of the video output (AV Output) is in the separated state. 10. The method of claim 9, Wherein, Wherein when the status of the video output (AV Output) is in the separated state, execution of the BD-J title is stopped and a boot request signal is transmitted to the external display device.

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