KR20100115989A - Apparatus and method for reproducing a java blu-ray disc - Google Patents

Apparatus and method for reproducing a java blu-ray disc Download PDF

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Publication number
KR20100115989A
KR20100115989A KR1020090034681A KR20090034681A KR20100115989A KR 20100115989 A KR20100115989 A KR 20100115989A KR 1020090034681 A KR1020090034681 A KR 1020090034681A KR 20090034681 A KR20090034681 A KR 20090034681A KR 20100115989 A KR20100115989 A KR 20100115989A
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KR
South Korea
Prior art keywords
java
blu
ray disc
external device
disc
Prior art date
Application number
KR1020090034681A
Other languages
Korean (ko)
Inventor
이재용
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020090034681A priority Critical patent/KR20100115989A/en
Publication of KR20100115989A publication Critical patent/KR20100115989A/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs

Abstract

The present invention relates to an apparatus and method for reproducing a Java Blu-ray Disc, for example, without executing a Java Virtual Machine in an optical disc device such as a Blu-ray Disc player or the like, instead. The user can perform an interface with an external device such as a personal computer (PC) connected through a network, and efficiently use a Java virtual machine running on the external device, thereby starting the playback operation of the Java Blu-ray Disc. It is possible to shorten the waiting time, and when a power off or disk eject key is input while the Java virtual machine is running, the command requesting shutdown of the Java virtual machine is transmitted to an external device. Immediate power off or disk eject operations to reduce user wait time do.

Description

Apparatus and method for reproducing a java blu-ray disc}

The present invention relates to a Java Blu-ray Disc playback apparatus and method for enabling a Java application to be executed more efficiently in an optical disc device such as, for example, a Blu-ray Disc Player. It is about.

Blu-ray Discs (BDs), which are high-density optical discs, can be divided into HDMV (High Density Movie) Blu-ray Discs, which are widely used, and Java Blu-ray Discs (BD-J), which are recently commercialized. In an optical disk device such as a Blu-ray Disc player (BD-Player) equipped with a playback function of the Java Blu-ray Disc (BD-J), a Java Virtual Machine (JVM) is executed.

Meanwhile, the Java Virtual Machine (JVM), as is widely known, refers to an application used by Sun Microsystems, a developer of the Java language and its execution environment, and includes compiled Java binary code, An application program that acts as an interface between a microprocessor or a hardware platform that actually executes program instructions.

In the lead-in area of the Java Blu-ray Disc BD-J, disc type information indicating that the type of the optical disc is a Java Blu-ray Disc is recorded. In the pioneer section of the Data area, a Java Archive (JAR) file is recorded.

The JAR file is, as is well known, a zip file including Java application files and various materials to be used in a Java application. In the optical disk device, Java application files and materials are used to perform a series of Java application execution operations for executing the Java Virtual Machine (JVM).

In addition, when the execution of the Java application is completed, a menu image of various user interfaces (User Interface) supported by the Java application is generated, displayed on a television (TV), etc., and then any operation requested by the user, eg For example, a series of playback operations are performed to read and play back audio and video data recorded on a Java Blu-ray Disc.

However, when the Java virtual machine (JVM) is executed as described above, since the load on the optical disk device increases considerably, it takes a long time (for example, 1 minute and 20 seconds or more) to complete the execution of the Java application. The waiting time becomes longer.

In addition, when the power off or disk eject key is input while the Java application is running, the Java virtual machine should be shut down first. In this case, the optical disk device Since the load increases considerably, the user's waiting time becomes long.

The present invention does not execute a Java Virtual Machine (JVM) on an optical disk device such as, for example, a Blu-ray Disc player, but instead has an external device such as a personal computer (PC) connected and connected through a network. It is an object of the present invention to provide an apparatus and method for reproducing a Java Blu-ray disc for efficiently using a Java virtual machine executed in the external device by performing an interface.

In the Java Blu-ray Disc playback method according to the present invention, if the type of the optical disc is a Java Blu-ray Disc, a Java virtual machine is read by reading a JAR file recorded on the Java Blu-ray Disc, and provided with a Java virtual machine. Step 1 for transmitting to an external device; Transmitting a command for requesting execution of a Java application to the external device and generating and displaying a user interface menu image corresponding to the result when the Java application is executed in the external device; And reproducing audio and video data recorded on the Java Blu-ray Disc according to a user's selection input through the user interface image.

In addition, if the power-off or disk eject operation is requested while performing the playback operation, the method may further include immediately performing a power-off or disk eject operation after transmitting a command for terminating the Java application to the external device. Characterized in that it comprises,

The method may further include transmitting, to the external device, disc type information for indicating that the type of the optical disc is a Java Blu-ray disc before reading a JAR file recorded on the Java Blu-ray Disc. Characterized in that made,

The JAR file is a zip file including Java application files and materials to be used in the Java application, and the external device is connected through a network cable or Bluetooth. It is characterized in that the connected personal computer,

The command for requesting execution of the Java application may be generated and transmitted according to a format previously prescribed with the external device, regardless of the Java Blu-ray Disc.

In addition, the Java Blu-ray Disc playback apparatus according to the present invention, the interface means for connecting and connecting to an external device equipped with a Java virtual machine; Reproducing means for reading and reproducing data of a Java Blu-ray disc; Generating means for generating a user interface image; And control means for performing an interface with the external device and controlling the playback operation, wherein the control means controls an operation of the interface means and the playback means. An AR file and a command for executing a Java application are transmitted to the external device, and when the Java application is executed on the external device, the generation means is controlled to operate and a user interface corresponding to the result. And generating and displaying a menu image, and controlling the playback means according to a user's selection input through the user interface image to reproduce audio and video data recorded on the Java Blu-ray Disc.

In addition, when the power-off or disk eject operation is requested during the play operation, the control means transmits a command for terminating the Java application to the external device and immediately performs the power-off or disk eject operation. Characterized by performing,

In addition, the control unit, before reading the JAR file recorded on the Java Blu-ray Disc, transmits the disc type information to inform the external device that the type of the optical disc is a Java Blu-ray Disc. Characterized by

The JAR file is a zip file including Java application files and materials to be used in the Java application, and the external device is connected through a network cable or Bluetooth. It is characterized in that the connected personal computer,

The command for requesting execution of the Java application may be generated and transmitted according to a format previously prescribed with the external device, regardless of the Java Blu-ray Disc.

The apparatus and method for reproducing a Java Blu-ray Disc according to the present invention, for example, does not execute a Java Virtual Machine in an optical disc device such as a Blu-ray Disc player, but instead uses a network. User waiting time to start playback operation of Java Blu-ray Disc by performing interface with an external device such as a personal computer (PC) connected through a connection and efficiently using a Java virtual machine running on the external device. In addition, when the power off or disk eject key is input while the Java virtual machine is running, a command for shutting down the Java virtual machine is transmitted to an external device, and then the power off. Alternatively, the disk eject operation can be performed immediately, thereby reducing the user waiting time.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, preferred embodiments of a Java Blu-ray disc reproducing apparatus and method according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention can be applied to various optical disk devices equipped with a playback function of a Java Blu-ray Disc (BD-J). For example, the network Blu-ray Disc player 100 to which the present invention is applied is shown in FIG. As shown, the optical disc 10, the optical pickup 11, the digital signal processor 12, the decoder 13, the CPI 14, the buffer memory 15, the OSD generator 16, and the storage 17 ), The network module 18, and the interface unit 19 may be included.

The interface unit 19 may be connected to an external device 300 such as a personal computer (PC) through, for example, a network cable such as a USB cable or a wireless communication such as Bluetooth. In the connection, the external device 300 executes a Java virtual machine (JVM), and the external device may instead use an Internet server (Server) that executes the Java virtual machine.

In the CPI 14, when any one optical disk 10 is inserted into the optical disk device, as shown in FIG. 2, for example, the C disk 14 is recorded in the lead-in area of the optical disk. The disc type information is read and confirmed.

In addition, if the checked disc type information is unique disc type information corresponding to the Java Blu-ray Disc (BD-J), the CPI 14 operates the interface unit 19 to control the external device. Interface to the 300, for example, in order to inform that the optical disk 10 is a Java Blu-ray disk (BD-J), the unique disk type information read from the lead-in area, The external device 300 is transmitted.

In the CPI 14, as illustrated in FIG. 2, a JAR recorded in a specific section of the data area of the Java Blu-ray disc, for example, a pioneer section of the data area is recorded. After reading the file and transmitting the file to the external device 300, a command for requesting execution of a Java application is generated and transmitted to the external device 300.

Accordingly, the external device 300 executes a Java virtual machine (JVM) using a Java application file and a material included in the JAL file, for example, FIG. 3. As shown in FIG. 2, the network Blu-ray Disc player 200 and the personal computer 300 transmit and receive a previously prescribed command so that the interface operation is normally performed through a USB cable or Bluetooth wireless communication.

In the CPI 14, when the execution of the Java application is completed on the external device as described above, the OSD generating unit 16 is operated to output menu images of various user interfaces supported by the Java application. do.

Accordingly, the user may perform a series of playback operations, such as reading and playing back audio and video data recorded on the Java Blu-ray Disc, through a variety of user interface menu images supported by the Java application. This will make it run faster.

In addition, the CPI 14 generates a command requesting shutdown of the Java virtual machine when a power off or disc eject operation is requested. After transmitting to an external device, a power off or disk eject operation is performed immediately, which will be described in detail below.

FIG. 4 is a flowchart illustrating an embodiment of a method for reproducing a Java Blu-ray disc according to the present invention. In the CPI 14, when an arbitrary optical disc 10 is inserted, as described above with reference to FIG. Likewise, the disc type information recorded in the lead-in area of the optical disc is checked (S10).

If the disc type information is unique disc type information corresponding to the Java Blu-ray Disc, the optical disc 10 determines that it is a Java Blu-ray Disc (BD-J) (S11). As a result of the determination, if it is not a Java Blu-ray disc, the CPI 14 performs a normal initialization operation corresponding to, for example, an HDMV Blu-ray Disc which is generally widely used (S12).

On the other hand, if the optical disc is a Java Blu-ray Disc (BD-J) as a result of the determination, as described above with reference to Figure 3, by operating the interface unit 19, via a USB cable or Bluetooth, personal After connecting and connecting to an external device 300 such as a computer (PC) (S13), the disk type information (Disc Type) corresponding to the Java Blu-ray Disc (BD-J) is transmitted to the external device 300. (S14).

In the CPI 14, for example, as described above with reference to FIG. 2, a JAR file recorded in a leading section of the data area of the Java Blu-ray disc is read out, and The transmission to the external device (S15).

In addition, the CPI 14 generates and transmits a command for requesting the execution of a Java application to the external device (S16), wherein the command is externally connected and connected through the USB cable or Bluetooth wireless communication. As a request command in a pre-defined format with the device, it may be generated in a pre-defined format irrespective of the Java Blu-ray Disc.

Meanwhile, the external device 300 performs a series of Java application execution operations for executing a Java virtual machine using the Java application file and the material included in the JAL file according to the request command. Then, a command corresponding thereto is generated and transmitted to the CPI 14 of the optical disc device 100.

In addition, the CPI 14 performs a series of processes as described above, and when the Java application is executed (S17), the OSD generation unit 16 is controlled in operation and variously supported by the Java application. A menu image of the user interface is generated and output and displayed on a television or the like (S18).

In addition, in the CPI 14, when a user requests a reproduction operation of audio and video data recorded on the Java Blu-ray Disc, for example, through a menu image of the user interface, the corresponding serial In operation S19, since the Java virtual machine is executed in the external device as described above, the CPI 14 may perform a corresponding operation corresponding to a key value of a user input during the operation. Will be.

On the other hand, in the CPI 14, for example, when the user inputs a power-off or disk eject key while performing the playback operation as described above (S20), the external device 300, Java virtual machine A command for requesting execution of the shutdown (Shut Down) is generated and transmitted (S21).

In addition, since the Java virtual machine that is being executed in the external device is terminated immediately, the power-off or disk eject operation is performed immediately (S22). Therefore, an increase in load due to the execution and termination of the Java virtual machine and the resulting The user waiting time can be reduced efficiently.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. , Alteration, substitution, addition, or the like.

1 shows a configuration of an embodiment of an optical disk device to which the present invention is applied;

FIG. 2 illustrates an embodiment in which disc type information and a control AR file are read according to the present invention.

3 illustrates an embodiment in which an optical disk device and an external device to which the present invention is applied are connected and connected through a USB cable or Bluetooth.

4 is a flowchart illustrating an embodiment of a method for reproducing a Java Blu-ray disc according to the present invention.

[Description of Drawings]

10: optical disc 11: optical pickup

12 digital signal processor 13 decoder

14: CPI 15: Buffer Memory

16: OSD generation unit 17: storage

18: network module 19: interface unit

100: network video player 200: content providing server

300: personal computer

Claims (10)

If the type of optical disc is a Java Blu-ray disc, step 1 of reading a JAR file recorded on the Java Blu-ray Disc and transmitting it to an external device equipped with a Java virtual machine; Transmitting a command for requesting execution of a Java application to the external device and generating and displaying a user interface menu image corresponding to the result when the Java application is executed in the external device; And And reproducing audio and video data recorded on the Java Blu-ray Disc according to a user's selection input through the user interface image. The method of claim 1, If the power-off or disk eject operation is requested during the play operation, the method further includes: immediately transmitting the command for terminating the Java application to the external device and immediately performing the power-off or disk eject operation. Java Blu-ray Disc playback method characterized in that made. The method of claim 1, And before transmitting a JAR file recorded on the Java Blu-ray Disc, transmitting the disc type information to the external device to indicate that the type of the optical disc is a Java Blu-ray Disc. Java Blu-ray Disc playback method. The method of claim 1, The JAR file is a zip file including Java application files and materials to be used in the Java application. The external device is a Java Blu-ray disc playback method, characterized in that the personal computer connected via a network cable or Bluetooth. The method of claim 1, And a command for requesting execution of the Java application is generated and transmitted according to a format prescribed in advance with the external device, regardless of the Java Blu-ray Disc. Interface means for connection connection with an external device equipped with a Java virtual machine; Reproducing means for reading and reproducing data of a Java Blu-ray disc; Generating means for generating a user interface image; And In addition to performing an interface with the external device, and including a control means for controlling the playback operation, The control means controls the interface means and the playback means to transmit a JAR file of the Java Blu-ray Disc and a command for executing a Java application to the external device. When the Java application is executed in the external device, operation of the generating means is controlled to generate and display a user interface menu image corresponding to the result. And reproducing the audio and video data recorded on the Java Blu-ray Disc by controlling the playback means according to a user's selection input through the user interface image. The method of claim 6, When the power-off or disk eject operation is requested during the play operation, the control means transmits a command for terminating the Java application to the external device and immediately performs the power-off or disk eject operation. Java Blu-ray Disc playback device, characterized in that. The method of claim 6, The control means may be further configured to transmit, to the external device, disc type information for indicating that the type of the optical disc is a Java Blu-ray Disc before reading a JAR file recorded on the Java Blu-ray Disc. Featured Java Blu-ray Disc playback device. The method of claim 6, The JAR file is a zip file including Java application files and materials to be used in the Java application. The external device is a Java Blu-ray Disc playback device, characterized in that the personal computer connected via a network cable or Bluetooth. The method of claim 6, And a command for requesting execution of the Java application is generated and transmitted according to a format previously prescribed with the external device irrespective of the Java Blu-ray Disc.
KR1020090034681A 2009-04-21 2009-04-21 Apparatus and method for reproducing a java blu-ray disc KR20100115989A (en)

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KR1020090034681A KR20100115989A (en) 2009-04-21 2009-04-21 Apparatus and method for reproducing a java blu-ray disc

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