KR20100035784A - Apparatus and method for playback position restore at car's cd/dvd deck - Google Patents

Abstract

PURPOSE: A device and a method for restoring a playback point at a CD/DVD deck of a vehicle are provided to improve performance of a CD/DVD deck by accurately restoring a final playing point. CONSTITUTION: A device for restoring a playback point at a CD/DVD deck(30) of a vehicle comprises a main system(40) and a sub system(50). The sub system plays video of CD or DVD, and periodically transmits playing point information during playing. The main system periodically receives the playing point information from the sub system. The main system provides the playing point information when replaying, and plays video of CD or DVD by restoring a final flaying point.

Description

Apparatus and method for playback position restore at car's CD / DVD deck}

The present invention relates to a vehicle CD / DVD deck, and more particularly, even when the vehicle is parked or powered off while playing a CD or DVD in the vehicle CD / DVD deck, the last play position information of the corresponding CD or DVD may be stored in advance. The present invention relates to an apparatus and method for restoring a playback position in a vehicular CD / DVD deck that enables the user to continuously watch the final position of the CD or DVD again.

The vehicle is equipped with a car audio and video system with a radio, tape deck (DECK) and compact disk deck. The car audio video system can be used to play music and videos recorded on a radio, CD or DVD (Digital Video Disk). CD and DVD players are typically composed of one DVD deck.

A conventional CD / DVD deck or player will be described below.

In a CD / DVD deck or a player that provides a conventional final playback position service, when the power is turned on or off during playback, the position information currently being played is directly controlled by one chip (CHIP) or two chip (CHIP) DSPs. After saving to the memory (EEPROM) possible, if the power is applied again, the last position data stored in the memory (EEPROM) is recovered and then played back from the location.

However, when this technology is applied to a vehicle CD / DVD deck, the final playback position is stored when the power is cut from the head unit to the deck to prevent battery discharge at the moment the vehicle is turned off. There is no time to save on).

In addition, when the final position storage fails in the deck within the limit time for preventing battery discharge (Battery), the power can be cut off at the head unit (Head Unit). In this case, when the vehicle is started again, a problem arises that the system is reproduced at the initial position other than the last heard position or the system is sometimes down.

In addition, since the user is playing at the position other than the final position and has to manually find and play the position again, there is a need for a solution.

As described above, when the conventional final position reproduction method is applied to a vehicle CD / DVD deck or a car audio video system, the restoration of the final reproduction position does not work properly, and thus an improvement is required.

The present invention solves the above-mentioned problems, an object of the present invention is to park the vehicle or play the CD or DVD in the CD / DVD deck installed in the car audio video system, the CD or DVD when playing again after the power is turned off It is an object of the present invention to provide an apparatus and method for restoring a playback position in a vehicle CD / DVD deck capable of continuously viewing information of the last playback position of a DVD.

In addition, the present invention, when playing a CD or DVD in the vehicle CD / DVD deck periodically backed up and stored the playback position in the main system to read the final playback position information of the CD or DVD in the main system when playing again after the vehicle is powered off It is an object of the present invention to provide an apparatus and method for restoring a playback position in a vehicular CD / DVD deck that can be viewed continuously because it is played back.

The apparatus of the present invention for achieving the above object, in the vehicle CD / DVD deck, play the moving picture stored in the CD or DVD as an audio, video signal, and periodically transmits the playback position information during playback, and again after stopping or power off Controls the operation of the subsystem and CD / DVD deck that receives and reproduces the playback position during execution and restores the last playback position, and periodically receives and stores the playback position information from the subsystem during playback and stops or powers off. And a main system for providing the play position information to the subsystem when executing again to restore the last play position to play the CD or DVD.

The main system may further include a master microcomputer that receives and stores the reproducing position information and controls the operation of a subsystem. The sub-system periodically transmits the reproducing position information and transmits the reproducing position information to the main system. When received from the system is characterized in that it includes an MPEC IC that recovers and plays back the final playback position.

In addition, the method of the present invention for achieving the above object is the process of instructing the execution of the CD or DVD in the vehicle CD / DVD deck to the subsystem from the master microcomputer of the main system, and the CD or DVD in the MPEC IC of the subsystem Restoring the data stored on the DVD to play back audio and video, and providing playback position information to the main system at a predetermined time interval from the MPEC IC, and then turning on the CD or DVD again after the power is turned off. When executed, the MPEC IC may search for the final playback position of the CD or DVD and perform playback.

In addition, searching for the final playback position of the CD or DVD in the MPEC IC and performing playback includes transmitting the playback position information stored in the master microcomputer to the MPEC IC, and using the playback position information in the MPEC IC. Or finding and executing the final playback position of the DVD.

The present invention is an efficient invention that can be applied not only to a vehicle CD / DVD deck but also a technique for recovering the final position in various multimedia player.

In addition, the present invention improves the performance of the vehicle CD / DVD deck by accurately recovering and executing the last playback position, and the user uses a CD / DVD deck that provides more advanced technology.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted.

The present invention periodically stores in the memory of the main system during the playback, so that the final playback position can be restored more efficiently and accurately when playing a CD or DVD using a vehicle CD / DVD deck, after parking the vehicle or power off When the CD or DVD is played again, the subsystem receives the last play position information from the main system and reproduces the information correctly.

1 is a schematic configuration diagram of an apparatus for restoring a playback position of a vehicle CD / DVD deck according to an embodiment of the present invention.

Vehicle CD / DVD deck 30 is composed of a main system (40) and a sub-system (Sub System) 50, the main system 40 has a Master Micom (42), Subsystem 50 is equipped with a Moving Picture Experts Group (MPEC) integrated circuit (IC) 52.

The main system 40 controls the overall operation of the vehicle CD / DVD deck 30, and the sub system 50 plays the CD or DVD under the control of the main system 40.

In addition to the MPEC IC 52, the subsystem 50 is provided with an optical pickup for reading data from CDs and DVDs and converting the data into electrical signals, and the main system 40 includes a CD and a DVD player main body.

The subsystem 50 restores the compressed video to audio and video signals, periodically providing position information when playing a CD or DVD, and receives the final playback position information from the main system 40 when it is executed again after power off. To restore the final position so that you can watch continuously.

The present invention provides the playback position information to the main system 40 at regular intervals in the MPEC IC 52 of the subsystem 50 when playing a CD or DVD while driving in a vehicle, and the master microcomm of the main system 40 is provided. The MPEC IC 52 of the subsystem 50 receives the final playback position information stored in its own memory and stored in the memory of the master microcomputer 42 when the CD or DVD is executed again after the vehicle is turned off. To correctly play the final playback position of the CD or DVD.

2 is a flowchart illustrating an operation of storing a playback position during playback in a vehicle CD / DVD deck of the present invention.

When the CD or DVD is inserted into the vehicle CD / DVD deck or the car audio video system while the vehicle is running in steps 121 to 125, the master microcom 42 of the main system 40 controls the subsystem 50 to instruct execution. Then, the MPEC IC 52 of the subsystem 50 plays CD or DVD.

In steps 127 to 129, the MPEC IC 52 of the subsystem 50 restores the data stored in the CD or DVD to audio and video signals and provides a user function, and the MPEC IC 52 of the subsystem 50 plays back. When this is started, the playback position information is provided to the master microcomputer 42 of the main system 40 at set intervals, and the master microcom 42 of the main system 40 stores the playback position information in its own memory.

In steps 131 to 135, the MPEC IC 52 of the subsystem 50 periodically stores and executes the play position information in the memory of the master microcomputer 42 of the main system 40 until it is turned off when playing the CD or DVD. When the power is turned off, the master microcomputer 42 of the main system 40 instructs the MPEC IC 52 of the subsystem 50 to turn off the power, and after a predetermined time, turns off the power of the main system 40. Quit.

3 is a flowchart illustrating an operation of restoring a final position during playback in a vehicle CD / DVD deck.

If the CD or DVD that was previously executed on the vehicle CD / DVD deck or the car audio video system is restarted while the vehicle is powered on in steps 211 to 215, the master microcom 42 of the main system 40 returns to the subsystem. The control signal is transmitted so that the power supply 50 is turned on, and the MPEC IC 52 of the subsystem 50 resets and waits.

In step 217, the master microcomputer 42 of the main system 40 transmits the final reproduction position information stored in the memory to the MPEC IC 52 of the subsystem 50.

In step 219, the master microcomputer 42 of the main system 40 gives the play instruction to the MPEC IC 52 of the subsystem 50, and in step 221, the MPEC IC 52 of the subsystem 50 waits for the last time. When the playback position information is received from the main system 40, the final playback position of the CD or DVD is completely restored, and when the restoration is completed, the CD or DVD is played.

In the present invention, the restoration position information is periodically transmitted to the main system 40 during the playback in preparation for the power off, and the position is backed up.

In the main system 40, the MPEC IC 52 of the subsystem 50 is immediately turned off when the vehicle is powered off, and the backup data is transmitted to the MPEC IC 52 when the power is reapplied.

Therefore, the MPEC IC 52 can recover the final playback position without any problem even if the power supply is turned on or off.

The present invention utilizes communication between the master microcomputer 42 of the main system 40 and the MPEC IC 52 of the subsystem 50 without problems in a special situation of the vehicle, thereby completely recovering the final playback position.

As described above, the present invention can more efficiently and accurately recover the final playback position when playing a CD or DVD using a vehicle CD / DVD deck, and can be applied not only to the vehicle but also to other multimedia players.

So far, the configuration and operation of the embodiment of the present invention have been described. The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims but also by the equivalents of the claims.

1 is a schematic configuration diagram of an apparatus for restoring a playback position of a vehicle CD / DVD deck according to an embodiment of the present invention.

2 is an operation flowchart for storing a playback position during playback in a vehicle CD / DVD deck of the present invention.

3 is an operation flowchart of restoring a final position at the time of playing on a vehicle CD / DVD deck.

<Description of Major Symbols in Drawing>

30: Car CD / DVD deck 40: Main system

42: Master Microcom 50: Subsystem

52: MPEC IC

Claims (6)

In the car CD / DVD deck, A subsystem for reproducing a moving picture stored in a CD or a DVD as an audio or video signal, periodically transmitting play position information during play, and receiving and replaying the last play position when the play position information is executed again after stopping or power off; And Controls the operation of the CD / DVD deck and periodically receives and stores the playback position information from the subsystem during playback, and provides the playback position information to the subsystem when it is executed again after stopping or powering off to restore the final playback position. And a main system for reproducing the CD or DVD. The method of claim 1, And the main system receives and stores the reproduction position information and provides a master microcomputer for controlling the operation of the subsystem. The method according to claim 1 or 2, The subsystem includes an MPEC IC which periodically transmits the play position information and receives the play position information from the main system, and restores and plays the final play position. Device. The method of claim 1, And the main system and the sub-system are applicable to a moving picture or an audio player for playing multimedia for portable or fixed use. Instructing execution from the master microcomputer of the main system to the subsystem when the CD or DVD is executed in the vehicle CD / DVD deck; Restoring data stored in the CD or DVD in the MPEC IC of the subsystem to play audio and video; Storing and providing reproduction position information to the main system at predetermined time intervals in the MPEC IC; The method of restoring a play position in a vehicle CD / DVD deck, comprising: searching for the final play position of the CD or DVD by the MPEC IC when the CD or DVD is turned on after the power is turned off. . The method of claim 5, Finding the final playback position of the CD or DVD in the MPEC IC and performing playback, Transmitting the reproduction position information stored in the master microcomputer to the MPEC IC; And reproducing the final playback position of the CD or DVD using the playback position information in the MPEC IC.

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