JP2008310189A - Data processor, control program, and computer-readable recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide "a data processor, a control program and a computer-readable recording medium" for preventing a display screen from flickering. <P>SOLUTION: A micro controller 28 determines whether image data included in both image files are same each other or not (step S33, step S42), based on tag information (the pixel number of the image data or data volumes of the image data) included in the respective corresponding image files of reproduced music files and music files to be reproduced next, and cancels acquisition of the image file corresponding to the music file to be reproduced next (step S34), when the image data included in both image files are determined to be the same. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a data processing apparatus, a control program, and a computer-readable recording medium for reproducing music data of a music file stored in a recording medium (external medium).

  Conventionally, an image display system including an image data storage device and an image display device is known (see, for example, Patent Document 1).

  In Patent Document 1, when the image data storage device is requested to transfer image data for image display from the image display device, the image data storage device first transfers low-resolution image data for initial display in accordance with the resolution of the image display device. Then, high-resolution image data is transferred. The image display device displays the low-resolution image data that is sent, temporarily stores the high-resolution image data, and processes the stored high-resolution image data in response to a user operation. indicate.

Conventionally, an in-vehicle audio device to which an external device (for example, ipod (registered trademark)) can be connected is known. This in-vehicle audio device reads music data and image data (for example, a jacket photo of a music album) held in the ipod, and displays the image data during reproduction of the music data.
Japanese Patent Laid-Open No. 7-98579

  In the on-vehicle audio device described above, when the next music data is played after the music data has been played back, it takes time to read the image data corresponding to the next music data from the ipod. There is a time difference between the start of image data and the display of image data. For this reason, when a plurality of music data are continuously played back, the display unit of the in-vehicle audio device repeats the state where the image data is displayed or disappears, and the display screen flickers.

  Even when the technology of Patent Document 1 is combined with the in-vehicle audio device, since the image data is switched according to the switching of the music data, the time required for displaying the new image data immediately after the switching of the image data is as follows. Although it is short, on the display unit of the in-vehicle audio device, the state where the image data is displayed or disappears is repeated, and the display screen flickers.

  SUMMARY An advantage of some aspects of the invention is that it provides a data processing device, a control program, and a computer-readable recording medium that can prevent a display screen from flickering.

  In order to achieve the above object, a data processing apparatus of the present invention includes a plurality of music files and a plurality of image files respectively associated with the plurality of music files, each image file including tag information and image data. Connecting means for connecting to an external device for storing the information, reproducing means for reproducing each of the plurality of music files, and display means for displaying image data included in an image file corresponding to the music file reproduced by the reproducing means And whether or not the image data included in both image files is the same based on tag information included in the image file corresponding to each of the music file that has been played and the music file that is to be played next And when the image data included in both image files is determined to be identical to each other, the next reproduction is performed. And a stop means to stop the acquisition of the image file corresponding to the music file.

  According to this configuration, when the tag information included in the image file corresponding to the music file that has been played back and the tag information included in the image file corresponding to the music file to be played next are the same, Since the acquisition of the image file corresponding to the music file to be played back is stopped, the image data displayed on the display means is not switched, and flickering of the display screen can be prevented. In addition, it is possible to reduce the load caused by the image data acquisition process.

  Preferably, the tag information is at least one of the number of pixels of the image data and the data amount of the image data.

  According to this configuration, it is possible to accurately determine the identity of the image data corresponding to each of the music file that has been reproduced and the music file that is to be reproduced next.

  Preferably, the determination means is included in both image files based on partial color information of image data included in the image file corresponding to each of the music file that has been played back and the music file to be played next. It is determined whether or not the image data are the same.

  According to this configuration, since the data volumes of the image data to be compared with each other are small, it is possible to quickly determine the identity of both image data. Also, since the identity of both image data is determined using part of the color information of both image data, the identity of both image data can be determined with high accuracy.

  More preferably, when the color information of a part of the image data included in the image file corresponding to the music file that has been played back is black and white information, the determination unit includes the image data included in both the image files. Discontinue discrimination of identity.

  According to such a configuration, it is possible to prevent a decrease in the accuracy of determining the identity of image data included in both image files.

  In order to achieve the above object, the data processing apparatus of the present invention includes a plurality of music files including tag information, and a connection unit that connects to an external device that stores a plurality of image files respectively associated with the plurality of music files, Reproduction means for reproducing each of the plurality of music files, display means for displaying image data included in the image file corresponding to the music file reproduced by the reproduction means, the music file that has been reproduced, and the next reproduction A discriminating means for discriminating whether or not the tag information included in each music file is the same, and the tag information included in each of the music file that has been played back and the music file that is played back next When it is determined that they are the same, the image data included in the image file corresponding to the music file to be reproduced next is Until viewable state, and control means for the regeneration to control the display means to display the image data contained in the image file corresponding music files has been completed.

  According to such a configuration, flickering of the display screen can be prevented.

  Preferably, the tag information is artist name or album name information.

  According to this configuration, when it is determined that the artist name or album name information included in each of the music file that has been played back and the music file that is to be played next are the same, the music file that has been played back The image data included in the image file corresponding to the image data and the image data included in the image file corresponding to the music file to be played next are likely to match, and switching the display of the image data makes the user feel uncomfortable. There is nothing. Even if the two image data are different, the two image data are related to the artist name or the album name, so that the user feels uncomfortable.

  Preferably, the data processing apparatus includes an internal storage unit that stores the music file that has been played back and an image file corresponding to the music file, and each of the music file that has been played back and the music file that is to be played next The display means displays the image data included in the image file stored in the internal storage means when it is determined that the artist name or album name information included in the image data is the same. To control.

  According to such a configuration, the display means can display the image data included in the image file corresponding to the music file that has been played back earlier than when the image data is acquired from the external device.

  Preferably, the control means includes acquisition means for acquiring image data included in an image file corresponding to the music file to be reproduced next from the external device, and the acquisition means reproduces the music file to be reproduced next. When the image data included in the image file corresponding to the image file is acquired from the external device, the control means acquires the image data included in the image file corresponding to the music file that has been played back from the external device. The display means is controlled so as to switch to data for display.

  According to such a configuration, the display of image data can be switched smoothly.

  In order to achieve the above object, a control program according to the present invention includes a computer, a plurality of music files, and a plurality of image files respectively associated with the plurality of music files, each image file including tag information and image data. Connection means for connecting to an external device for storing the object, reproduction means for reproducing each of the plurality of music files, display means for displaying image data contained in an image file corresponding to the music file reproduced by the reproduction means Based on the tag information included in the image file corresponding to each of the music file that has been reproduced and the music file that is to be reproduced next, it is determined whether or not the image data included in both the image files is the same. When it is determined that the image data included in the determination unit and both image files are the same, To function as a stop means to stop the acquisition of the image file corresponding to the music file to be played.

  In order to achieve the above object, a control program of the present invention includes a connection unit that connects a computer to an external device that stores a plurality of music files including tag information and a plurality of image files respectively associated with the plurality of music files, Reproduction means for reproducing each of the plurality of music files, display means for displaying image data included in the image file corresponding to the music file reproduced by the reproduction means, the music file that has been reproduced, and the next reproduction Discriminating means for discriminating whether or not the tag information included in each of the music files is the same, and the tag information included in each of the music file that has been played back and the music file to be played next are the same Included in the image file corresponding to the music file to be played next. To the image data is displayable state, the reproduction is made to function as a control means for controlling said display means to display an image data included in the image file corresponding to the music file has been completed.

  In order to achieve the above object, a computer-readable recording medium of the present invention includes a computer, a plurality of music files, and a plurality of image files respectively associated with the plurality of music files, each image file including tag information and Connection means for connecting to an external device for storing data including image data, reproduction means for reproducing each of the plurality of music files, and image data included in an image file corresponding to the music file reproduced by the reproduction means Whether the image data included in both image files is the same based on the tag information included in the display means for displaying, the music file that has been played back, and the image file corresponding to each of the music files to be played next Determining means for determining whether the image data included in both image files are the same. When it is, and records a program for functioning as a stop means to stop the acquisition of the image file corresponding to the music file played to the next.

  To achieve the above object, a computer-readable recording medium of the present invention connects a computer to an external device that stores a plurality of music files including tag information and a plurality of image files respectively associated with the plurality of music files. Connecting means for reproducing, reproducing means for reproducing each of the plurality of music files, display means for displaying image data included in an image file corresponding to the music file reproduced by the reproducing means, music file that has been reproduced, and next The discriminating means for discriminating whether or not the tag information included in each of the music files to be reproduced is the same, and the tag included in each of the music file that has been reproduced and the music file that is to be reproduced next When it is determined that the information is the same, the image corresponding to the music file to be reproduced next is displayed. A program for functioning as a control means for controlling the display means so as to display image data contained in an image file corresponding to a music file that has been reproduced until the image data contained in the file can be displayed. Is recorded.

  According to the control program and the computer-readable recording medium, the same effects as those of the data processing apparatus can be obtained.

  According to the present invention, flickering of the display screen can be prevented.

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

(First embodiment)
FIG. 1 is a block diagram showing the configuration of the data processing apparatus according to the first embodiment of the present invention. The data processing device according to the present embodiment is applied to a personal computer, a portable device, or an in-vehicle music reproducing device such as a car audio or a navigation device.

  The data processing apparatus 1 includes a USB connector 12a for connecting a USB memory 30, an SD slot 12b for connecting an SD (Secure Digital) card 32, a USB connector 12c for connecting an ipod (registered trademark) 34, a USB Digital that converts digital audio signals of music data read from the interface (I / F) unit 14 connected to the connector 12a, the SD slot 12b, and the USB connector 12c, the USB memory 30, the SD card 32, or the ipod 34 into analog audio signals. An analog converter (DAC) 16, an amplifier 18 that amplifies the analog audio signal, a speaker 20 that converts the amplified audio signal into audible sound, an input unit 22 that receives input from the user, such as a touch panel and a remote controller (not shown). Be equipped It is.

  Furthermore, the data processing apparatus 1 includes a display unit 24 that displays a database and image data related to music data included in the USB memory 30, the SD card 32, or the ipod 34, music data read from the USB memory 30, the SD card 32, or the ipod 34, and It has a memory 26 for storing a database of image data and music data, and a microcontroller 28 for controlling each part.

  The memory 26 is composed of, for example, a hard disk or a non-volatile memory. The microcontroller 28 includes a RAM / ROM 28a and a CPU 28b. The RAM / ROM 28a stores a control program, a music file for one music piece played immediately before, a corresponding image file, and the like. Therefore, the music file stored in the RAM / ROM 28a and the image file corresponding to the music file are updated every time the music to be reproduced is changed. The input unit 22 includes various operation buttons and the like.

  When the memory 30 is connected to the USB connector 12a in accordance with the program stored in the RAM / ROM 28a, the microcontroller 28 recognizes the connection of the USB memory 30 and accordingly stores the music data and images stored in the USB memory 30. It has a function to automatically create a database about data. Similarly, according to the program stored in the RAM / ROM 28a, the microcontroller 28 recognizes the connection of the SD card 32 when the SD card 32 is connected to the SD slot 12b, and is stored in the SD card 32 accordingly. A function for automatically creating a database relating to music data and image data is provided. Furthermore, according to the program stored in the RAM / ROM 28a, the microcontroller 28 recognizes the connection of the ipod 34 when the ipod 34 is connected to the USB connector 12c, and accordingly the database relating to the music data and image data stored in the ipod 34. It has a function to create automatically. The contents of the created database are displayed on the display unit 24 and are immediately used for user data retrieval.

  Note that the format of the music file may be a WAV format or a compression format such as MP3 or WMA.

  2A is a schematic diagram showing a configuration of a music file included in the USB memory 30, the SD card 32, or the ipod 34. FIG. 2B is an image included in the USB memory 30, the SD card 32, or the ipod 34. It is a schematic diagram which shows the structure of a file.

  As shown in the figure, the music file is composed of tag information and music data. The tag information includes artist name, album name, title name, and link information as information related to music data, but may further include a genre name, performance time, and the like. The link information specifies an image file to be linked with the music file.

  The image file is composed of tag information and image data (for example, a photo of a music jacket). The tag information includes information on the data amount of the image data and information on the number of pixels in the vertical and horizontal directions of the image data. The tag information of the music file or the image file is a key when searching for desired music data or image data.

  In the following description, the process when the music file and the image file stored in the ipod 34 are used will be described. However, the same process is performed when the music file and the image file stored in the USB memory 30 or the SD card 32 are used. Is executed.

  When the data processing device 1 reproduces a music file stored in the ipod 34, the microcontroller 28 reads out an image file corresponding to the music file to be reproduced from the ipod 34, and displays the image data included in the image file on the display unit 24. To do. When the microcontroller 28 switches the music file that has been played back to the music file to be played next, the microcontroller 28 supports the image data included in the image file corresponding to the music file that has been played back and the music file that is played next. It is determined whether or not the image data included in the image file to be processed is the same. If the two image data are the same, the microcontroller 28 maintains the display of the image data included in the image data corresponding to the music file that has been reproduced, and the image file corresponding to the music data to be reproduced next. Cancel acquisition of. This prevents the display screen from flickering and reduces the load on the microcontroller 28.

  The method for determining the identity of both image data includes (1) comparison of the number of vertical and horizontal pixels of both image data, (2) comparison of the data amounts of both image data, and (3) data contents of predetermined pixels of both image data. There is a comparison (specifically, pixel color information).

  Hereinafter, (1) comparison of the number of vertical and horizontal pixels of both image data will be described.

  FIG. 3 is a flowchart showing processing executed by the microcontroller 28.

  First, reproduction of the music data included in the music file is completed (step S31). Here, the reproduction of the music data represents the end of the reproduction of the music data by the normal reproduction or the end of the reproduction of the music data by the track up / track down. It is assumed that the image file corresponding to the music file is stored in the RAM / ROM 28a of the microcontroller 28. Further, it is assumed that the image data included in the image file corresponding to the music file is displayed on the display unit 24.

  The microcontroller 28 acquires information on the number of vertical and horizontal pixels included in the image file corresponding to the music file to be reproduced next from the ipod 34 (step S32).

  Next, the microcontroller 28 determines the number of vertical and horizontal pixels of the image data included in the image file corresponding to the music file that has been reproduced and the vertical and horizontal pixels of the image data included in the image file corresponding to the music file to be reproduced next. It is determined whether or not the numbers are the same (step S33). In this step, the determination step is executed using the number of pixels in the vertical and horizontal directions of the image data. However, the determination step may be executed using the total number of pixels constituting the image data.

  If YES in step S33, the microcontroller 28 stops acquiring the image file corresponding to the music file to be reproduced next (step S34). At this time, the display unit 24 maintains the display of the image data included in the image file corresponding to the music file that has been reproduced.

  The microcontroller 28 acquires the music file to be played next, starts playing the next music file via the digital / analog converter (DAC) 16, the amplifier 18 and the speaker 20 (step S35). The process ends.

  In the case of NO in step S33, the microcontroller 28 acquires the music file to be played next, and plays the next music file via the digital / analog converter (DAC) 16, the amplifier 18 and the speaker 20. Start. At the same time, the microcontroller 28 acquires an image file corresponding to the music file to be reproduced next (step S36).

  The microcontroller 28 outputs the image data included in the image file corresponding to the music file to be reproduced next to the display unit 24 (step S37), and ends this processing. The display unit 24 displays the image data currently displayed (that is, the image data included in the image file corresponding to the music file that has been played back) included in the image file corresponding to the music file to be played next. Switch to and display.

  Next, (2) comparison of the data amounts of both image data will be described.

  FIG. 4 is a flowchart showing a first modification of the process executed by the microcontroller 28. The same processes as those in FIG. 3 are denoted by the same step numbers, and the description thereof is omitted.

  After the process of step S31, the microcontroller 28 acquires information on the data amount of the image data included in the image file corresponding to the music file to be reproduced next from the ipod 34 (step S41).

  Next, the microcontroller 28 determines that the data amount of the image data included in the image file corresponding to the music file that has been played back and the data amount of the image data included in the image file corresponding to the music file to be played back next to each other. It is determined whether or not they are the same (step S42).

  If YES in step S42, the process proceeds to step S34. On the other hand, if NO in step S42, the process proceeds to step S36.

  Next, (3) comparison of data contents of predetermined pixels of both image data will be described.

  FIG. 5 is a flowchart showing a second modification of the process executed by the microcontroller 28. The same processes as those in FIG. 3 are denoted by the same step numbers, and the description thereof is omitted.

  After the process of step S31, the microcontroller 28 determines whether or not the data size per pixel of the image data included in the image file corresponding to the music file that has been reproduced is 2 bytes or more (step S51). Here, the discrimination target pixel is an arbitrary number of pixels included in the image data, and may be set via the input unit 22. For example, the discrimination target pixel is one pixel at the center of the image data included in the image file corresponding to the music file that has been played back (when the number of vertical and horizontal pixels in the image data is an odd number), and the center 2 It is a pixel (when one of the number of vertical and horizontal pixels of the image data is an even number) or four pixels at the center (when the number of vertical and horizontal pixels of the image data is both an even number). In addition, the determination in step S51 is executed in order to adopt a pixel having any one of about 65,000 colors as a pixel to be used for comparison, and to remove black and white pixels from pixels to be used for comparison. This is to prevent the accuracy of the determination of the identity of the two image data from being lowered if the pixels used for comparison are monochrome pixels.

  If NO in step S51, the process ends. On the other hand, if YES in step S51, the microcontroller 28 determines the data contents (specifically, a predetermined pixel (that is, a part of the image data) of the image data included in the image file corresponding to the music file to be reproduced next. (Color information) is acquired (step S52). Here, the predetermined pixel from which the data content is acquired may be a pixel at the same position as the pixel to be processed in step S51.

  Next, the microcontroller 28 determines the data contents of the predetermined pixels of the image data included in the image file corresponding to the music file that has been played back, and the predetermined data of the image data included in the image file corresponding to the music file to be played next. It is determined whether or not the data content of the pixel is the same (step S53). In this step, the identity of the data contents of the center pixels of both image data may be determined. However, the identity of the data contents of the center pixels of both image data may be determined or both image data may be determined. The identity of the data contents of the four pixels at the center of each may be determined. Further, the location of the image data to be compared with each other need not be limited to the center, and the location of the image data to be compared with each other may be set by the input unit 22.

  The data content (that is, color information) of the center pixel of the image data included in the image file corresponding to the music file that has been reproduced is “0xDCF2”, and is included in the image file corresponding to the music file to be reproduced next. When the data content of the center pixel of the image data to be displayed is “0xCB31”, it is determined that the two are different.

  If YES in step S53, the process proceeds to step S34. On the other hand, if NO in step S53, the process proceeds to step S36.

  In addition, as a method for determining the identity of the two image data, (1) comparison of the number of vertical and horizontal pixels of both image data, (2) comparison of the data amount of both image data, and (3) per pixel of both image data. The comparison of the data contents may be combined as appropriate. The pattern of the combination is (1) comparison and (2) comparison, (1) comparison and (3) comparison, (2) comparison and (3) comparison, or (1) to (3) All comparisons. Thus, by combining the determination methods, a highly accurate determination result of the identity of the two image data can be obtained. FIG. 6 shows a process executed by the microcontroller 28 when all the comparisons (1) to (3) are combined.

  As described above in detail, according to the present embodiment, the microcontroller 28 uses the tag information (image data) included in the image file corresponding to each of the music file that has been played back and the music file that is to be played next. Based on the number of pixels or the data amount of the image data), it is determined whether or not the image data included in both image files is the same (step S33, step S42), and the image data included in both image files. Are determined to be identical to each other, the acquisition of the image file corresponding to the music file to be reproduced next is stopped (step S34), so that the image data displayed on the display unit 24 is not switched and the display is performed. Flickering of the display screen of the unit 24 can be prevented. In addition, it is possible to reduce the load caused by the image data acquisition process.

  Further, since the tag information is at least one of the number of pixels of the image data and the amount of data of the image data, the microcontroller 28 stores each of the music file that has been reproduced and the music file to be reproduced next. The identity of corresponding image data can be determined with high accuracy.

  Further, the microcontroller 28 uses the color information of part of the image data included in the image file corresponding to each of the music file that has been played back and the music file to be played next, to include images included in both image files. It is determined whether or not the data are identical to each other (step S53). Accordingly, since the data capacity of the image data to be compared with each other is small, it is possible to quickly determine the identity of both image data. Also, since the identity of both image data is determined using part of the color information of both image data, the identity of both image data can be determined with high accuracy.

  Furthermore, when the color information of part of the image data included in the image file corresponding to the music file that has been played back is black and white information, the microcontroller 28 and the next playback of the music file that has been played back. Since the determination of the identity of the image data included in the image file corresponding to each of the music files to be performed is stopped (NO in step S51), the accuracy of the determination of the identity of the image data included in both image files is reduced. This can be prevented.

(Second Embodiment)
The data processing apparatus according to the present embodiment has the same configuration as that of the data processing apparatus 1 according to the first embodiment.

  FIG. 7 is a flowchart showing processing executed by the microcontroller 28 in the second embodiment.

  First, the reproduction of the music data included in the music file is finished (step S71). Here, the reproduction of the music data represents the end of the reproduction of the music data by the normal reproduction or the end of the reproduction of the music data by the track up / track down. Note that tag information (specifically, artist name, album name, title name, and link information) included in the music file is stored in the RAM / ROM 28a of the microcontroller 28. Further, it is assumed that the image data included in the image file corresponding to the music file is stored in the RAM / ROM 28a of the microcontroller 28.

  Next, the microcontroller 28 acquires tag information (here, artist name and album name) included in the music file to be reproduced next from the ipod 34 (step S72).

  Next, the microcontroller 28 determines whether or not the album name of the music file that has been reproduced is the same as the album name of the music file that is to be reproduced next (step S73).

  If YES in step S73, the microcontroller 28 causes the display unit 24 to display the image data included in the image file corresponding to the music file that has been played back (step S75). That is, the display unit 24 maintains the display of the image data included in the image file corresponding to the music file that has been played back.

  Thereafter, the microcontroller 28 acquires the music file to be reproduced next from the ipod 34 and starts the reproduction of the music file to be reproduced next through the digital / analog converter (DAC) 16, the amplifier 18 and the speaker 20. (Step S76). Thereafter, the microcontroller 28 acquires an image file corresponding to the music file to be reproduced next (step S77).

  Next, the microcontroller 28 determines whether or not acquisition of the image file corresponding to the music file to be reproduced next is completed (step S78). If NO in step S78, the process returns to step S77. On the other hand, if “YES” in the step S78, the microcontroller 28 causes the display unit 24 to display the image data included in the image file corresponding to the music file to be reproduced next (step S79), and ends this process. . In this way, the microcontroller 28, when it is determined that the artist name or album name information of the music file that has been played back and the music file to be played next are the same, the music file to be played next. The display unit 24 is controlled to display the image data included in the image file corresponding to the music file that has been reproduced until the image data included in the image file corresponding to is displayed. Until the image data included in the image file corresponding to the music file to be reproduced is acquired and output to the display unit 24, the display of the image data included in the image file corresponding to the music file that has been reproduced is maintained. Display unit 24 is controlled).

  In step S79, the display unit 24 converts the currently displayed image data (that is, image data included in the image file corresponding to the music file that has been reproduced) into an image file corresponding to the music file to be reproduced next. Switch to the included image data and display.

  If NO in step S73, the microcontroller 28 determines whether or not the artist name of the music file that has been played back is the same as the artist name of the music file to be played next (step S74). ). If YES in step S74, the process proceeds to step S75. On the other hand, if NO at step S74, the process proceeds to step S76.

  FIG. 8 is a flowchart showing a modification of the process executed by the microcontroller 28. The same steps as those in FIG. 7 are denoted by the same step numbers, and the description thereof is omitted. Further, after the processing in step S71, the image data included in the image file corresponding to the music file that has been played back is stored in the RAM / ROM 28a of the microcontroller 28. However, in this flowchart, playback is performed. When the image data included in the image file corresponding to the finished music file is not stored in the RAM / ROM 28a of the microcontroller 28 (for example, when there is no image file corresponding to the music file that has been reproduced from the beginning). There shall be.

  If YES in step S73 or step S74, the microcontroller 28 determines whether the image data included in the image file corresponding to the music file that has been played back is stored in the RAM / ROM 28a of the microcontroller 28. (Step S81). If YES in step S81, the microcontroller 28 causes the display unit 24 to display the image data contained in the RAM / ROM 28a (step S82), and proceeds to step S76. If NO in step S81, the process proceeds to step S76.

  7 and 8, the image data included in the image file corresponding to the music file that has been played back is stored in the RAM / ROM 28a of the microcontroller 28. However, the image data is stored in the memory. 26 may be stored.

  As described above in detail, according to the present embodiment, the microcontroller 28 has a high relevance between the music file that has been played back and the music file to be played next, that is, each of these music files. Until the image data included in the image file corresponding to the music file to be reproduced next becomes displayable (that is, the microcontroller 28 determines that the tag information included in the Until the image data included in the image file corresponding to the music file to be reproduced is acquired and output to the display unit 24), the image data included in the image file corresponding to the music file that has been reproduced is displayed to be displayed. Since the means is controlled, flickering of the display screen can be prevented.

  Also, since the tag information includes artist name or album name information, it is determined that the artist name or album name information included in each of the music file that has been played back and the music file to be played next are the same. The image data included in the image file corresponding to the music file that has been played back is highly likely to match the image data included in the image file corresponding to the music file to be played next. Switching the display of data does not give the user a sense of incongruity. Even if the two image data are different, the two image data are related to the artist name or the album name, so that the user feels uncomfortable.

  The RAM / ROM 28a or the memory 26 stores the music file that has been played back and the image file corresponding to the music file, and the artist name or album included in each of the music file that has been played back and the music file that will be played next. When it is determined that the name information is the same, the microcontroller 28 controls the display unit 24 to display the image data included in the image file stored in the RAM / ROM 28a or the memory 26. Therefore, the display unit 24 can display the image data included in the image file corresponding to the music file that has been played back earlier than when the image data is acquired from the ipod 34 or the like.

  Furthermore, when the microcontroller 28 acquires the image data included in the image file corresponding to the music file to be reproduced next from the ipod 34 or the like, the microcontroller 28 displays the image data included in the image file corresponding to the music file that has been reproduced. Since the display unit 24 is controlled to switch to display the image data acquired from the ipod 34 or the like, the display of the image data can be switched smoothly.

  A recording medium in which a software program for realizing the functions of the data processing device 1 is recorded is supplied to the data processing device 1, and the microcontroller 28 of the data processing device 1 reads and executes the program stored in the storage medium By doing so, the same effects as those of the above embodiment can be obtained. Examples of the storage medium for supplying the program include a CD-ROM, a DVD, or an SD card.

  In addition, the same effect as that of the above embodiment can be obtained when the microcontroller 28 of the data processing device 1 executes a software program for realizing the functions of the data processing device 1.

  The present invention is not limited to the above-described embodiment, and can be implemented with various modifications within a range not departing from the gist thereof.

It is a block diagram which shows the structure of the data processor which concerns on the 1st Embodiment of this invention. (A) is a schematic diagram showing the configuration of a music file included in a USB memory, SD card or ipod (registered trademark), and (B) shows the configuration of an image file included in a USB memory, SD card or ipod. It is a schematic diagram shown. 3 is a flowchart illustrating processing executed by a microcontroller in the first embodiment. It is a flowchart which shows the 1st modification of the process which a microcontroller performs. It is a flowchart which shows the 2nd modification of the process which a microcontroller performs. 12 is a flowchart showing a third modification of the process executed by the microcontroller 28. 10 is a flowchart illustrating processing executed by a microcontroller in the second embodiment. It is a flowchart which shows the modification of the process which a microcontroller performs.

Explanation of symbols

1 Data Processing Device 12a USB Connector 12b SD Slot 12c USB Connector 14 Interface (I / F) Unit 16 Digital / Analog Converter (DAC)
18 Amplifier 20 Speaker 22 Input Unit 24 Display Unit 26 Memory 28 Microcontroller 28a RAM / ROM
28b CPU
30 USB memory 32 SD card 34 ipod

Claims (12)

A plurality of music files and a plurality of image files respectively associated with the plurality of music files, wherein each image file includes tag information and image data, and connecting means for connecting to an external device;
Playback means for playing back each of the plurality of music files;
Display means for displaying image data included in an image file corresponding to a music file reproduced by the reproduction means;
Discrimination that determines whether or not the image data included in both image files is the same based on tag information included in the image file corresponding to each of the music file that has been played and the music file that is to be played next Means,
Data processing comprising: a canceling unit for canceling acquisition of an image file corresponding to the music file to be reproduced next when it is determined that the image data included in both the image files is the same as each other apparatus.   The data processing apparatus according to claim 1, wherein the tag information is at least one of a number of pixels of the image data and a data amount of the image data.   The discriminating means determines whether image data included in both image files is based on partial color information of image data included in the image file corresponding to each of the music file that has been reproduced and the music file that is to be reproduced next. 3. The data processing apparatus according to claim 1, wherein it is determined whether or not they are identical to each other.   When the color information of a part of the image data included in the image file corresponding to the music file that has been played back is black and white information, the determination unit determines whether the image data included in both the image files is identical. 4. The data processing apparatus according to claim 3, wherein the determination is stopped. Connection means for connecting to a plurality of music files including tag information and an external device storing a plurality of image files respectively associated with the plurality of music files;
Playback means for playing back each of the plurality of music files;
Display means for displaying image data included in an image file corresponding to a music file reproduced by the reproduction means;
Discriminating means for discriminating whether or not the tag information included in each of the music file that has been reproduced and each of the music files to be reproduced next is the same;
Included in the image file corresponding to the music file to be played next when it is determined that the tag information contained in each of the music file that has been played and the music file to be played next are the same Control means for controlling the display means so as to display the image data included in the image file corresponding to the music file for which the reproduction has been completed until the image data to be displayed can be displayed. Processing equipment.   6. The data processing apparatus according to claim 5, wherein the tag information is artist name or album name information. An internal storage means for storing the music file that has been reproduced and an image file corresponding to the music file;
When it is determined that the artist name or album name information included in each of the music file that has been played back and each of the music files that are to be played next are the same, the control means stores the information in the internal storage means. 6. The data processing apparatus according to claim 4, wherein the display unit is controlled to display image data included in the stored image file. The control means includes acquisition means for acquiring image data included in an image file corresponding to the music file to be reproduced next from the external device,
When the acquisition unit acquires image data included in an image file corresponding to the music file to be reproduced next from the external device, the control unit includes the image file corresponding to the music file that has been reproduced. 8. The data processing apparatus according to claim 5, wherein the display unit is controlled so as to switch the image data to be displayed to the image data acquired from the external device. Computer
Connecting means for connecting to an external device for storing a plurality of music files and a plurality of image files respectively associated with the plurality of music files, each image file including tag information and image data;
Playback means for playing back each of the plurality of music files;
Display means for displaying image data included in an image file corresponding to a music file reproduced by the reproducing means;
Discrimination that determines whether or not the image data included in both image files is the same based on tag information included in the image file corresponding to each of the music file that has been played and the music file that is to be played next And a means for stopping the acquisition of an image file corresponding to the music file to be reproduced next when it is determined that the image data included in both image files are the same. Control program. Computer
Connection means for connecting to an external device that stores a plurality of music files including tag information and a plurality of image files respectively associated with the plurality of music files;
Playback means for playing back each of the plurality of music files;
Display means for displaying image data included in an image file corresponding to a music file reproduced by the reproducing means;
Discriminating means for discriminating whether or not the tag information included in each of the music file that has been played back and the music file to be played next are the same, and the music file that has been played back and the next playback When it is determined that the tag information included in each of the music files is the same, the reproduction is performed until the image data included in the image file corresponding to the music file to be reproduced next can be displayed. A control program for causing the display means to function so as to display image data included in an image file corresponding to the music file for which the music file has been finished. Computer
Connecting means for connecting to an external device for storing a plurality of music files and a plurality of image files respectively associated with the plurality of music files, each image file including tag information and image data;
Playback means for playing back each of the plurality of music files;
Display means for displaying image data included in an image file corresponding to a music file reproduced by the reproducing means;
Discrimination that determines whether or not the image data included in both image files is the same based on tag information included in the image file corresponding to each of the music file that has been played and the music file that is to be played next And a program for causing the program to function as a canceling unit for stopping the acquisition of the image file corresponding to the music file to be reproduced next when it is determined that the image data included in both the image files is the same. A computer-readable recording medium characterized by being recorded. Computer
Connection means for connecting to an external device that stores a plurality of music files including tag information and a plurality of image files respectively associated with the plurality of music files;
Playback means for playing back each of the plurality of music files;
Display means for displaying image data included in an image file corresponding to a music file reproduced by the reproducing means;
Discriminating means for discriminating whether or not the tag information included in each of the music file that has been played back and the music file to be played next are the same, and the music file that has been played back and the next playback When it is determined that the tag information included in each of the music files is the same, the reproduction is performed until the image data included in the image file corresponding to the music file to be reproduced next can be displayed. A computer-readable recording medium on which is recorded a program for functioning as control means for controlling the display means so as to display image data included in an image file corresponding to a music file for which music has been completed.

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