KR101039003B1 - Image reproducing device of generating file index for searching image file easily and method thereof - Google Patents

Abstract

Provided are a video reproducing apparatus and a file list generating method thereof for generating a file list for easily retrieving an image file. A predetermined number of moving picture files are withdrawn from the video reproducing apparatus and the recording medium, and for each of the extracted moving picture files, at least one of a corresponding moving picture screen, a video sound, and an initial picture is generated, An image processing unit outputs a rearranged file list and a video sound on one screen, and a control unit for controlling a drawing operation and a generating operation of the image processing unit. As a result, a file list including a video screen or a video sound that is the content of the video file can be generated and displayed, thereby making it easier to search for a specific file among video files recorded on the recording medium.

Video player, file list, video screen, video sound, initial screen

Description

Image reproducing device of generating file index for searching image file easily and method

1 is a block diagram of an image reproducing apparatus for generating a file list for easily retrieving an image file according to an embodiment of the present invention;

FIG. 2 is a flowchart provided to explain a method of generating a file list capable of easily searching for an image file according to an embodiment of the present invention; and

3 is a diagram illustrating a file list generated by the image reproducing apparatus of FIG. 1.

Explanation of symbols on the main parts of the drawings

110: recording medium 120: image processing unit

121: SDRAM 123: DSP

125: Audio DAC 127: Video Encoder

130: display unit 140: control unit

150: key input unit

The present invention relates to an image reproducing apparatus and a method of generating a file list thereof, and more particularly, to searching for a specific file among image files recorded on a recording medium. The present invention relates to an image reproducing apparatus and a method of generating a file list thereof, which generate a list and display the same, thereby making file searching easier.

A video reproducing apparatus is a device that displays a video signal input from the outside, such as a broadcast signal, or a video signal recorded on a recording medium such as an HDD or a memory stick so as to be viewed by a user through a predetermined signal processing process. In addition, the video reproducing apparatus may record a video signal input from the outside on a recording medium.

For efficient use of the recording medium, the video signal is recorded in the form of a file compressed in a predetermined format. In recent years, the compression technology of video signals has been developed, and the storage capacity of recording media has increased, making it possible to record many video files on one recording medium.

As the number of files recorded on the recording medium increases, the effort and time required for searching for a specific file increases. Therefore, in order to reduce the labor required when searching for a file, a technique for displaying a plurality of thumbnail size images on a single screen in the case of a still image is disclosed. Also, in the case of a moving picture, a technique is disclosed in which several still images obtained by capturing the first frame of a moving picture can be simultaneously displayed on one screen.

According to the above solution, in the case of a still image, the user can search the file more conveniently and quickly. However, in the case of a moving picture, the above-mentioned solution does not provide very high utility. This is because, in the case of a video, the entire contents of the video cannot be intuitively detected by only the first frame captured. For example, in the case of a movie file, it can be seen that it is impossible to find the title or content of the movie only by the first scene of the movie.

Therefore, even with the above-described conventional solutions, the video files must be played one by one in order to search for a specific video file, which causes a lot of time and effort.

The present invention has been made to solve the above problems, an object of the present invention is to search for a specific file among the image files recorded on the recording medium, consisting of a video screen or video sound that is the content of the image file The present invention provides a video reproducing apparatus and a method of generating a file list thereof, which enable easier file retrieval by generating and displaying a file list.

According to the present invention, a predetermined number of video files are extracted from a video reproducing apparatus and a recording medium, and corresponding video screens, video sounds, and initial frames of the video screens are obtained for each of the extracted video files. An image processing unit for generating at least one of the first screens corresponding to the video screen, a file list of rearranging the generated video screens and the first screens on one screen, and outputting the video sound; It includes a control unit for controlling. The display device may further include a display unit for displaying the file list output from the image processing unit and reproducing the video sound.

The image processor may generate a corresponding video screen for all the extracted video files. The image processor may further generate a corresponding video sound with respect to any one selected from the extracted video files.

The image processor may generate the video screen corresponding to the selected one of the extracted video files, and generate the first screen corresponding to the non-selected video file. The image processor may further generate a corresponding video sound with respect to the selected video file.

The image processor may generate a corresponding first screen for each of the extracted video files. The image processor may further generate a corresponding video sound with respect to any one selected from the extracted video files.

On the other hand, the file list generating method of the video playback apparatus according to the present invention comprises the steps of: a) fetching a predetermined number of video files from a recording medium, b) corresponding video screen, video sound and Generating at least one of the first screens corresponding to the first frame of the video screen; c) rearranging the generated video screen and the first screens in one screen to generate a file list; and d) the generated file. Outputting a list and the video sound. In addition, the method may further include displaying the file list and playing the video sound.

In the step b), the corresponding video screen may be generated for all the extracted video files. Also, in the step b), the corresponding video sound may be further generated with respect to any one selected from the extracted video files.

The step b) may generate the video screen corresponding to the selected one of the extracted video files, and generate the first screen corresponding to the non-selected video file. In addition, the step b) may further generate a corresponding video sound for the selected video file.

In the step b), for each of the extracted video files, the corresponding first screen may be generated. Also, in the step b), the corresponding video sound may be further generated with respect to any one selected from the extracted video files.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a block diagram of an image reproducing apparatus generating a file list for easily retrieving an image file according to an embodiment of the present invention. The image reproducing apparatus according to the present invention includes a recording medium 110, an image processing unit 120, a display unit 130, a control unit 140, and a key input unit 150.                     

Image files are recorded on the recording medium 110, but the type of the image files to be recorded is not limited. Accordingly, the recording medium 110 may record not only a moving image file such as a moving picture expert group (MPEG) file, an audio video interleaving (AVI) file, but also a still image file such as a JPEG (Joint Photographic Expert Group) file.

In addition, any medium capable of recording an image file may be used as the recording medium 110. Therefore, not only internal recording media such as memory and HDD (Hard Disk Drive), but also recording media such as IC memory cards, memory sticks, compact disks (CD), digital video disks (DVD), and magnetic tapes can be attached and removed. It can be used as the recording medium 110.

The image processing unit 120 decodes and decompresses (decompresses) the compressed image file extracted from the recording medium 110 under the control of the control unit 140 and converts it into an analog signal. In addition, the image processor 120 generates a file list by using a predetermined number of image files extracted from the recording medium 110 under the control of the controller 140. The image processor 120 performing such a function includes an SDRAM 121, a digital signal processor (DSP) 123, an audio digital-to-analog converter (DAC) 125, and a video encoder 127. It consists of.

The SDRAM 121 functions as a buffer in which the compressed image file recorded on the recording medium 110 and the image signal decoded by the DSP 123 to be described later are temporarily stored.

The DSP 123 separates the compressed video file extracted from the SDRAM 121 into a video signal and an audio signal under the control of the controller 140, decodes and decompresses (decompresses) each of the decoded video signal. Determines at what scale on which portion of the display 130 the screen is to be reproduced. As described above, the DSP 123 also performs a signal processing process for adjusting the size of the video and the position on the screen to be reproduced with respect to the decoded video signal. Thus, a plurality of videos can be simultaneously reproduced on one screen.

The audio DAC 125 receives a digital audio signal output from the DSP 123 and converts the digital audio signal into an analog audio signal. The video encoder 127 receives a digital video signal output from the DSP 123 under the control of the controller 140 and converts the digital video signal into an analog video signal.

The display 130 reproduces the video signal output from the video encoder 127 and the audio signal output from the audio DAC 125. The display unit 130 may be provided in the image reproducing apparatus as shown in FIG. 1, or may be implemented as a separate device such as a TV or a speaker-embedded monitor.

The controller 140 receives a user's command through the key input unit 150 and controls the overall operation of the image reproducing apparatus accordingly.

Hereinafter, a process of generating a file list by the image reproducing apparatus of FIG. 1 will be described. If a user wants to play an image file using the image reproducing apparatus, the image file currently recorded on the recording medium 110 should be searched for with reference to the file list and one of the image files should be selected.                     

In general, a file index means that file names of image files recorded on a recording medium are listed in a predetermined order. However, the file list in the present invention is made by enumerating images obtained by actually playing the image file instead of the file name and scaling the thumbnail size, which may be a moving image or a still image.

In addition, there is no limitation on the number of images constituting the file list. However, in the present embodiment, for convenience of description, it is assumed that the file list is composed of six images.

The video reproducing apparatus may configure a file list in various ways. In the present invention, a method of constructing five file lists will be described and each will be described. Hereinafter, a method of constructing a file list will be described one by one, a process of generating a file list by the image reproducing apparatus will be described with reference to FIG. 2, and the resulting file list will be described with reference to FIG. 3. 2 is a flowchart provided to explain a method of generating a file list capable of easily retrieving an image file according to an embodiment of the present invention, and FIG. 3 is a file list generated by the image reproducing apparatus of FIG. Figure is shown.

The first configuration is a method in which a file list is composed of video images obtained by playing video files (hereinafter, 'A type').

As shown in FIG. 2, when a user inputs a file list display command using the key input unit 150 (S310-Y path), the controller 140 controls the image files recorded on the recording medium 110. The information is read, and the image files are sorted in a specific order based on the information (S321). In order to sort the image files, the controller 140 may sort the image files based on the generation order (or vice versa) of the image files, the latest playback time of the image files, and the frequency of reproduction of the image files. The reason for arranging the image files in this way is because the number of image files that can be simultaneously displayed in the file list is limited (six in this embodiment), in order to determine the image files to be displayed first.

After the arrangement of the image files, the image files arranged in the first order (hereinafter referred to as 'first image file') are read from the recording medium 110 and stored in the SDRAM 121 through the DSP 123 (S323).

If the first image file is a still image file (S330-N path), the DSP 123 extracts and decompresses (decompresses) the first image file stored in the SDRAM 121 and decompresses the decoded image signal. In step S381, the image size is changed to the thumbnail size and the signal processing is performed to be displayed at a specific position on the file list. The signal processed video signal is converted into an analog video signal by the video encoder 127 (S383), and finally reproduced by the display unit 130 (S390).

On the other hand, if the first image file is a video file (S330-Y path), the controller 140 checks how the first image file is displayed on the file list (S341).

In the case of the A type, since the file list is composed of the video screen of the corresponding file (S343-Y and S345-N paths), the DSP 123 extracts the first video file stored in the SDRAM 121 to separate only the video signal. (S361), the decoded video signal is decoded and decompressed (decompressed), the image size is changed to a thumbnail size for the decoded video signal, and the signal processing is performed to be displayed at a specific position on the file list (S363). . The signal processed video signal is converted into an analog video signal by the video encoder 127 (S365), and finally reproduced by the display unit 130 (S390).

Thereafter, steps S323 to S390 are repeated for each of the second to sixth image files.

Hereinafter, the A type file list will be described with reference to FIG. 3. Referring to FIG. 3, an upper part 131 of the file list displayed on the display unit 130 has a mark for indicating that the currently displayed screen is a file index. This is a list of files for each file. Six images and file names obtained by playing the respective files are displayed. The lower part 135 shows information on the image file in which the cursor 133c is located. , Date of last play and number of play are displayed.

Here, the first to fifth images 133-1 to 133-5, which represent a list of the first to fifth image files that are moving image files (files having the mpg extension in FIG. 3), are obtained by playing the file. The sixth image 133-6, which is a screen and shows a list of the sixth image files that are still image files (files having the jpg extension in FIG. 3), is a still image screen.

The second configuration method is a method of outputting a video sound obtained by playing a video file in which a file list is composed of video screens obtained by playing video files, and having a cursor 133c (hereinafter, 'B type'). Also in the case of the B type, the processes of S310 to S341 and S381 to S383 shown in FIG. 2 are the same as those of the A type, and only subsequent processes will be described.

In the case of type B, the list of video files where the cursor 133c is located is displayed as a video screen, and a video sound thereof is also output (S343-Y and S345-Y paths). Therefore, if the cursor 133c is located in the first image file, the DSP 123 draws out the first image file stored in the SDRAM 121, and separates the video image into an audio signal (S351). The audio signal is decoded and decompressed (decompressed), and the image size is changed to a thumbnail size with respect to the decoded video signal, and a signal processing process is performed to be displayed at a specific position on the file list (S353). The signal processed video signal is converted into an analog video signal by the video encoder 127, the audio signal is converted into an analog audio signal by the audio DAC 125 (S355), and finally reproduced by the display unit 130 (S390). ).

On the other hand, the list of the video file without the cursor 133c is displayed as a video screen, but the video sound for it is not output (S343-Y, S345-N paths). Therefore, when the cursor 133c is not located in the first image file, the process goes through S361 to S365, which has been described in the A type and will be omitted. Thereafter, steps S323 to S390 are repeated for each of the second to sixth image files.

Hereinafter, the B type file list will be described with reference to FIG. 3. In the case of type B, the first to fifth images 133-1 to 133-5 are moving image screens obtained by reproducing the corresponding file, and the sixth image 133-6 is a still image screen. In addition, a video sound obtained by playing back the first video file in which the cursor 133c is located is output. Thereafter, when the user moves the cursor 133c to any one of the second to fifth image files by using the direction key provided in the key input unit 150, playback of the video sound for the first image file is stopped, and the cursor is newly refreshed. The video sound of the located video file is played.                     

In the third configuration method, the list of video files where the cursor 133c is located is displayed as a video screen obtained by playing the file, and the list of video files where the cursor 133c is not located is displayed in the video screen obtained by playing the file. Displayed as the first frame (hereinafter referred to as 'first screen'), the file list is organized (hereinafter, 'C type'). Also in the case of the C type, the processes of S310 to S341 and S381 to S383 shown in FIG. 2 are the same as those of the A type, and only the subsequent process will be described.

In the case of the C type, the list of video files in which the cursor 133c is located is displayed as a video screen (S343-Y and S345-N paths). Therefore, if the cursor 133c is located in the first image file, the process goes through S361 to S365, which has been described in the A type and will be omitted.

Then, the list of video files where the cursor 133c is not located is displayed as the first screen (S343-N path). Therefore, if the cursor 133c is not located in the first image file, the DSP 123 extracts the first image file stored in the SDRAM 121 and separates the video signal (S371). The video signal corresponding to the video signal is decoded and decompressed (decompressed), the image size is changed to a thumbnail size of the decoded video signal, and a signal processing is performed so that the video signal is displayed at a specific position in the file list (S373). The signal processed video signal is converted into an analog video signal by the video encoder 127 (S375), and finally reproduced by the display unit 130 (S390).

Thereafter, steps S323 to S390 are repeated for each of the second to sixth image files.                     

Hereinafter, the C type file list will be described with reference to FIG. 3. In the case of the C type, the first image 133-1 indicating the list of the first image files where the cursor 133c is located is a video screen of the corresponding file and the second to fifth images 133-2 to 133-5. Is the first screen of the corresponding files, and the sixth image 133-6 is a still image screen. Even in this case, the video file displayed on the moving picture screen may be changed according to the movement of the cursor 133c by the user.

In the fourth configuration method, the file list is composed of the first screens of the image files, and the list of the image files where the cursor 133c is located is displayed as the video screen of the corresponding file and outputs up to the video sound (hereinafter, 'D type' )to be. Also in the case of the D type, the processes of S310 to S341 and S381 to S383 shown in FIG. 2 are the same as those of the A type, and only the subsequent process will be described.

In the case of the D type, the list of video files where the cursor 133c is located is displayed as a video screen and output to the video sound (S343-Y and S345-Y paths). Therefore, the cursor 133c is located in the first video file. If there is, the process goes from S351 to S355, which is omitted since it has already been described in the B type.

Then, the list of video files where the cursor 133c is not located is displayed as the first screen (S343-N path). Therefore, if the cursor 133c is not located in the first image file, the process goes through S371 to S375, which has been described in the C type and will be omitted. Thereafter, steps S323 to S390 are repeated for each of the second to sixth image files.

Hereinafter, the D-type file list will be described with reference to FIG. 3. In the case of the D type, the first image 133-1 indicating the list of the first image files in which the cursor 133c is located is a video screen of the corresponding file, and the video sound of the first video file is output. The second to fifth images 133-2 to 133-5 are first screens of the corresponding files, and the sixth image 133-6 is a still image screen. Even in this case, as the user moves the cursor 133c, the video file displayed on the video screen and the video sound is played may be changed.

The fifth configuration method is a method in which a file list is composed of initial screens of image files (hereinafter, 'type E'). Also in the case of the E type, the processes of S310 to S341 and S381 to S383 shown in FIG. 2 are the same as those of the A type, and only subsequent processes will be described.

In the case of the E type, since the file list is composed of the first screen of the corresponding file (path S343-N), the process of S371 to S375 is performed, which is omitted since it is already described in the C type. Thereafter, steps S323 to S390 are repeated for each of the second to sixth image files.

Hereinafter, the E-type file list will be described with reference to FIG. 3. In the case of the E type, the first to fifth images 133-1 to 133-5 are first images of the corresponding files, and the sixth image 133-6 is a still image screen.

In addition, the file list may be composed of the first screens of the image files, and the video sound of the image file where the cursor 133c is located may be output. In addition, in the present embodiment, the configuration of the file list has been described in accordance with a preset method (A type to E type). However, the file list is displayed by the user's type change command while the file list is displayed. It is also possible to change the configuration to another configuration.

As described above, according to the present invention, it is possible to generate and display a file list consisting of a video screen or a video sound, which is the content of the video file, thereby making it easier to search for a specific file among video files recorded on the recording medium. You can do it.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims (16)

Extracting a plurality of video files from a recording medium, generating at least one of a video screen and a video sound obtained by reproducing the plurality of video files, and rearranging the generated video screens on one screen; An image processor for outputting the video sound; And And a controller for controlling a drawing operation and a generating operation of the image processing unit. The method of claim 1, And a display unit for displaying the file list output from the image processing unit and reproducing the video sound. The method of claim 1, The image processor, And a corresponding video screen is generated for all the extracted video files. The method of claim 1, The image processor, And generating a corresponding video sound for any one of the extracted video files. delete delete delete delete a) extracting a plurality of moving picture files from a recording medium; b) generating at least one of a video screen and a video sound obtained by playing the plurality of extracted video files; c) rearranging the generated video screens into one screen to generate a file list; And d) outputting the generated file list and the video sound; file list generation method of a video player. The method of claim 9, and e) displaying the file list and playing the video sound. The method of claim 9, B), And generating a corresponding video screen for all the extracted video files. The method of claim 9, B), And generating the corresponding video sound with respect to any one selected from the extracted video files. delete delete delete delete

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