KR100700276B1 - Apparatus and method for rebuilding lost index information in multimedia player - Google Patents

Abstract

A lost index information rebuilding method in a multimedia reproducing device and the multimedia reproducing device are provided to automatically rebuild key frame information or index information if the index information or the key frame information is lost while a multimedia file is downloaded, and to recover an existing lost file based on the rebuilt information so that the recovered file is stored again. A multimedia controller decides whether a reproduction select signal for reproducing a predetermined multimedia file is inputted(S10). If so, the controller decides whether index information of the multimedia file is lost(S20). If so, the controller outputs the multimedia file to an index generation processor(S40). The processor rebuilds a lost index information part or key frame part based on the multimedia file, and outputs the rebuilt information to the multimedia controller(S50). The multimedia controller stores the rebuilt multimedia file in a storage again while decoding the multimedia file desired by a user to reproduce the decoded file(S60).

Description

Apparatus and method for rebuilding lost index information in multimedia player}

1 is a block diagram schematically showing the configuration of a multimedia player according to an embodiment of the present invention;

2 is a flowchart illustrating an operation process of a method of regenerating missing index information in a multimedia player according to an exemplary embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: key input unit 20: multimedia control unit

30: communication interface unit 40: storage unit

50: index generation processor 60: display unit

70: memory

The present invention relates to a multimedia player.

More particularly, the present invention relates to a method for regenerating missing index information in a multimedia player for automatically regenerating a missing index or key frame information of a multimedia file to facilitate playback and storage of the corresponding file.

With the development of multimedia technology, the demand for devices for reproducing them also increases. In addition, in order to easily utilize and enjoy various contents, recently, devices that can play and utilize these multimedia files anytime, anywhere while storing and carrying various multimedia files have been recently introduced. The MP3 player is a representative example of such devices, and it is possible to watch multimedia files in MP3 format anytime and anywhere that can be played back only by using a personal computer.

On the other hand, in order to meet the user's demand for an ever-increasing multimedia content, portable multimedia players capable of playing not only audio data such as MP3 but also multimedia files such as avi, mpg, DviX and Xvid have been actively marketed. have.

The so-called portable multimedia player (PMP), which is a portable multimedia player having not only music playback but also video or digital camera function, is also called a portable multimedia player, a portable multimedia player, and a next-generation portable convergence device.

The basic structure is similar to the existing MP3 player, but unlike the MP3 player that can only play music, it can play not only digital audio data such as MP3, but also multimedia files, and it has a high capacity storage device (HDD) inside. It can also be used as a device, and thus has high utility. It is smaller than the palm of the hand for easy portability, weighs less than 250g and is equipped with a 3.5-inch LCD display. In addition to the MP3 player function, it has various functions such as FM broadcast reception function, game function, electronic dictionary function, video playback function and digital camera function. HDDs range from 20 to 40 gigabytes, and can hold more than 40 90-minute movies and 1,000 music videos.

Multimedia files used in such a multimedia player are typically downloaded and used on the Internet. However, if the download is not complete through the Internet, the video is not played at all or the video is cut off because it is located at the back of most files in the index portion necessary for playing the file. There was a problem that a search such as next was not made.

In order to solve such a problem, conventionally, a method of updating and supplementing a multimedia file containing index information by software is used. However, various video formats such as Xvid, H.263, and H.264 appear one after another. As new codecs are created, it is not enough to update software in preparation for increasing files and codecs.

In addition, in the related art, after processing and playing a multimedia file that has lost index information by software, if it is to be played again later, software processing of the missing index information has to be performed again. Of course, there is a problem that the existing information file is missing.

In order to solve the above-mentioned problems, an object of the present invention is to automatically regenerate the index information or key frame information when the index information or the key frame information is lost in the process of downloading the multimedia file, and based on the regenerated information. A method of regenerating missing index information in a multimedia player and a multimedia player for recovering and restoring a missing file of the present invention.

According to an embodiment of the present invention, there is provided a method for regenerating missing index information in a multimedia player, comprising: determining whether a play selection signal for playing a multimedia file downloaded from a multimedia controller is input from a key input unit; Determining whether the index information of the multimedia file has been lost by the multimedia controller when the play selection signal of the multimedia file is input from the key input unit; If the index information of the multimedia file is missing, outputting the multimedia file from the multimedia controller to the index generation processor; Regenerating missing index information or a key frame portion of the multimedia file in the index generation processor and outputting regeneration information to the multimedia controller; And playing back the multimedia file based on the regeneration information input from the index generation processor in the multimedia controller, and simultaneously re-storing the reproduced multimedia file in the storage unit.

In addition, after the multimedia file is reproduced based on the regeneration information described above and resaved the reproduced multimedia file, whether the re-save operation of the regenerated multimedia file is terminated while the multimedia control unit is reproducing the multimedia file based on the regeneration information. Determining; When the re-storing operation of the reproduced multimedia file is completed, searching for a playback position of the corresponding file re-stored in the storage unit to perform playback, and deleting the existing missing multimedia file; If the resave operation of the reproduced multimedia file is not finished, the multimedia control unit further comprises the step of performing playback until the regenerated multimedia file, and deleting the existing missing multimedia file after the re-save is completed; It is preferable.

On the other hand, the multimedia playback apparatus according to the present invention, in the multimedia playback apparatus including a key input unit, a display unit and a storage unit for storing various multimedia files, the multimedia file when the playback selection signal of the multimedia file is input to the key input unit A multimedia controller to determine whether index or key frame information of the multimedia file is lost and to output the multimedia file when the index or key frame information of the corresponding multimedia file is lost; And an index generation processor for regenerating missing index or key frame information of the multimedia file input from the multimedia controller, and outputting the regenerated information to the multimedia controller. The reproduction of the multimedia file is controlled based on the regenerated information input from the processing unit, and the regenerated multimedia file is re-stored in the storage unit.

The multimedia controller may be configured to search for a playback position of the multimedia file re-stored in the storage unit and to replay the current location when the re-storing operation of the reproduced multimedia file is ended while the multimedia file is reproduced based on the reproduced information. It is preferable to control the connection and playback, and to delete the existing missing multimedia file.

Hereinafter, a method for regenerating missing index information and a multimedia player in the multimedia player of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing the configuration of a multimedia player according to the present invention.

As shown, the multimedia player used in the present invention is a device such as a PMP, DVDP, etc., the key input unit 10, multimedia control unit 20, communication interface unit 30, storage unit 40, index generation processing unit 50, the display unit 60, the memory 70 and the like.

The key input unit 10 generates key signals related to various operations of the multimedia player according to a user's operation and outputs them to the multimedia control unit 20. The key input unit 10 is externally provided through the communication interface 30. , PC, Internet, etc.) to generate a playback selection key signal according to a user's operation for playing a predetermined multimedia file stored in the storage unit 40 and outputs it to the multimedia control unit 20.

The multimedia controller 20 may determine whether or not information of the corresponding file stored in the storage 40 is lost (ie, index information or key frame information) when a play selection key signal is input from the key input unit 10 according to a user's manipulation. If all the information is included and there is no problem with playback, the playback of the multimedia file is controlled. However, if it is confirmed that the index information, etc. are missing, the corresponding file is output to the index generation processing unit 50 to control regeneration of insufficient index information or key frame information and the like, and is input from the index generation processing unit 50. Based on the regeneration information, the multimedia file is controlled to be reproduced, and at the same time, the reproduced multimedia file is re-stored in the storage unit 40.

In addition, the multimedia controller 20 searches for a playback position of the corresponding file re-stored in the storage unit 40 when the restoring operation of the reproduced multimedia file is finished while playing the multimedia file based on the regeneration information. It connects naturally to and controls playback and controls the deletion of existing missing multimedia files. If regeneration of the reproduced multimedia file is not completed, playback is performed until the reproduced multimedia file is re-stored, and the deletion of the existing missing multimedia file is controlled after the re-save is completed.

The communication interface unit 30 is connected to an external device (for example, a PC) or a communication network such as the Internet under the control of the multimedia control unit 20, and downloads and stores the multimedia file in the storage unit 40.

The storage unit 40 stores various multimedia files, and outputs the multimedia files to the multimedia control unit 20 under the control of the multimedia control unit 20.

The index generation processor 50 stores various codec information and driving programs for rebuilding missing index information or key frame information of the multimedia file, and includes missing index information of the multimedia file input from the multimedia control unit 20. Regenerates key frame information and outputs the regenerated information to the multimedia controller 20.

The display unit 60 is typically LCD, and displays an image reproduced through the multimedia control unit 20.

The memory 70 stores various driving programs necessary for driving the multimedia player, and serves as a buffer for reading a multimedia file stored in the storage unit 40.

Next, an embodiment of a method for regenerating missing index information in the multimedia player according to the present invention configured as described above will be described in detail with reference to FIG.

2 is a flowchart showing in detail the operation of the method for regenerating missing index information in the multimedia player according to the present invention.

First, the multimedia controller 20 determines whether a play selection signal for playing a predetermined multimedia file stored in the storage unit 40 is input from the key input unit 10 (S10), and the key input unit 10. When the play selection signal of the multimedia file is inputted, it is determined whether index information of the corresponding multimedia file has been lost (S20). That is, it is determined whether the file is disconnected or not downloaded in the downloading process.

If it is determined that the index information of the corresponding multimedia file is not missing, that is, the multimedia file contains all the information and there is no problem in the reproduction, the multimedia control unit 20 plays the multimedia file and outputs it through the display unit 60. (S30).

However, if the index information of the corresponding multimedia file is missing as a result of the above-described determination in step S20, the multimedia control unit 20 outputs the corresponding multimedia file to the index generation processor 50 (S40).

Then, the index generation processor 50 regenerates the missing index information or the key frame part based on the multimedia file received from the multimedia controller 20, and outputs the reproduced information to the multimedia controller 20 (S50).

The multimedia controller 20 decodes the corresponding multimedia file desired by the user based on the regeneration information input from the index generation processor 50 and plays it through the display unit 60 and simultaneously reproduces the reproduced multimedia file in the storage unit 40. Resave (S60).

Thereafter, while regenerating the multimedia file while regenerating the multimedia file based on the regeneration information, the multimedia control unit 20 determines whether the re-save operation of the regenerated multimedia file is terminated while reproducing the multimedia file based on the regeneration information. Determine (S70). That is, it is determined whether the re-storing operation of the file is completed while playing the regenerated file.

As a result of the determination, when the re-save of the regenerated multimedia file is completed, the multimedia controller 20 searches for the playback position of the corresponding file re-stored in the storage unit 40 so as to be naturally connected to the currently played part and played back (S80). In operation S90, the existing multimedia file is deleted.

However, if the resave operation of the reproduced multimedia file is not finished as a result of the determination of step S70 described above, the multimedia control unit 20 performs the reproduction until the reproduced multimedia file is restored (S100), after the resave is completed Delete the old missing multimedia file.

As described above, according to the method for regenerating missing index information in the multimedia player according to the present invention, even if the index information or the key frame information is lost in the process of downloading the multimedia file, the corresponding index information or the key frame information is automatically regenerated so as to be perfect. Since the information is re-saved as a file with information, users who use the multimedia player can reload the file later to reduce the loading time due to the addition of the index information, and are lost even when moving to another storage medium or device. The effect is that you can move the file to a complete file format instead of using it.

Claims (4)

Determining whether a play selection signal for playing a multimedia file downloaded by the multimedia controller is input from the key input unit; Determining whether a multimedia file index or key frame information is missing when a play selection signal of a multimedia file is input from a key input unit; If the index or key frame information of the multimedia file is missing, outputting the multimedia file to the index generation processor by the multimedia controller; Regenerating missing index information or a key frame portion of the corresponding multimedia file by the index generation processor and outputting regeneration information to the multimedia controller; And And re-storing the reproduced multimedia file in a storage unit at the same time as playing the corresponding multimedia file on the basis of the regeneration information input from the index generation processor in the multimedia control unit. How to regenerate missing index information. The method of claim 1, further comprising: after regenerating the multimedia file based on the regenerated information and restoring the regenerated multimedia file. Determining, by the multimedia controller, whether a resave operation of the reproduced multimedia file is terminated while the multimedia file is reproduced based on the regeneration information; When the resave operation of the regenerated multimedia file is completed, searching and reproducing the playback position of the multimedia file re-stored in the storage unit by the multimedia controller to perform playback and deleting an existing missing multimedia file; And If the re-save of the reproduced multimedia file is not finished, the multimedia control unit may perform playback until the reproduced multimedia file is restored, and delete the existing missing multimedia file after the re-save is completed. A method for regenerating missing index information in a multimedia player, characterized in that it comprises a. In the multimedia player comprising a key input unit, a display unit and a storage unit for storing various multimedia files, When the play selection signal of the multimedia file is inputted to the key input unit, it is determined whether index or key frame information of the corresponding multimedia file is missing, and if the index or key frame information of the corresponding multimedia file is missing, the multimedia file is output. A multimedia controller; And an index generation processor configured to regenerate missing index or key frame information of the multimedia file input from the multimedia controller, and output the reproduced information to the multimedia controller. And the multimedia controller controls reproduction of the multimedia file based on the regenerated information input from the index generation processor, and re-stores the reproduced multimedia file in the storage unit. The method of claim 3, wherein The multimedia control unit searches for a playback position of the multimedia file re-stored in the storage unit and connects to the currently playing part when the re-storing operation of the reproduced multimedia file is ended while the multimedia file is reproduced based on the reproduced information. And controlling to play, and deleting an existing missing multimedia file.

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