JP2007172700A - On-vehicle reproduction system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle reproduction system capable of preventing increase of analysis time of an external medium even if the capacity of the external medium increases, preventing increase in size of a folder or a track, and reproducing a voice during reproduction. <P>SOLUTION: The on-vehicle reproduction device 1 includes a connection part 7 for connecting an external medium 8, a control unit for dividing the storage area of the external medium 8 connected to the connection part 7 for each predetermined storage capacity in a pseudo manner, and an operation part 6 for selecting a divided area for reproducing data from the divided areas formed by the pseudo division in the storage area of the external medium 8. The control unit 2 analyzes data for the divided area selected via the operation part 6 to reproduce voice data. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted playback device.

  Conventionally, many on-vehicle playback devices such as car audio have a cassette tape reading means, but nowadays external media such as CD (Compact Disc) drive, MD (Mini Disc) drive, HDD (Hard Disk Drive), etc. Many of them are equipped with various reading means for reading (see, for example, Patent Documents 1 and 2).

  In recent years, development of an in-vehicle playback apparatus that plays back music and the like by transferring audio data by connecting an external medium such as a USB memory or HDD via a USB (Universal Serial Bus) terminal to the USB has been promoted. . For example, an in-vehicle playback device has been proposed in which a notebook personal computer is connected via a USB terminal and music data stored in the notebook personal computer is played (see Patent Document 3).

  When audio data is reproduced from an external medium as described above, the in-vehicle reproduction apparatus normally performs processing as shown in the flowchart of FIG. That is, it is determined whether or not there is data in a storage area of an external medium such as a USB memory (step S100). If no data is stored, an error is notified (step S106) and the reproduction operation is terminated.

  If there is data in the storage area, the data is analyzed (step S101), and it is determined whether there is data that has not been analyzed yet (step S102). If there is unanalyzed data, it is determined whether or not the amount of data that can be analyzed by the on-vehicle playback device has been exceeded (step S103). Analysis is performed.

Subsequently, it is determined whether or not the analyzed data includes audio data that has been compressed to MP3 or the like and can be played back by the in-vehicle playback device (step S104). (Step S105). If there is no reproducible audio data, an error is notified (step S106) and the reproduction operation is terminated.
JP 2003-157665 A JP 2004-151756 A JP 2003-216289 A

  However, in recent years, the capacity of external media such as USB memories has increased significantly. Therefore, if you import audio data files from an external media from a personal computer, etc. and store them, and then play the external media via USB connection to the in-vehicle playback device, the amount of data stored in the media can be analyzed by the in-vehicle playback device May exceed the amount of data.

  In that case, with an external medium such as a USB memory in which data is read from the head, the data portion of the external medium exceeding the amount of data that can be analyzed cannot be reproduced. Moreover, since the amount of data analysis increases due to the increase in the capacity of the external media, it takes time to analyze the data, and it takes time to start reproducing the audio data. Therefore, there arises a problem that the user is stressed.

  Furthermore, if the amount of analyzed data is large, the number of folders and tracks that can be played back will be enormous as a result of the analysis, so it will be difficult and difficult for users to search for the next song to listen to during playback, There is also a problem that the stress of the user is doubled.

  Therefore, the present invention prevents the increase of the analysis time of the external media even when the capacity of the external media such as the USB memory is increased, and prevents the volume of folders and tracks that can be played back during playback from being increased. An object is to provide an apparatus.

In order to solve the above problem, the on-vehicle playback device of claim 1
A connection for connecting external media;
A control unit that divides the storage area of the external medium connected to the connection unit in a pseudo manner for each predetermined storage capacity;
An operation unit for selecting a divided area in which data is to be reproduced from among divided areas formed by the control unit in a pseudo-divided storage area of the external medium;
The control unit analyzes data for a divided region selected via the operation unit and reproduces audio data.

  According to a second aspect of the present invention, in the in-vehicle playback device according to the first aspect, the control unit is stored in the storage area by pseudo division of the storage area of the external media into the divided areas. When the file containing the audio data is divided, the file belongs to a divided area on the front side of the dividing position, or belongs to a divided area on the rear side of the dividing position, or before or after the dividing position. It is possible to select whether to belong to a divided area.

  According to a third aspect of the present invention, in the on-vehicle playback device according to the first or second aspect, the control unit can set the predetermined storage capacity.

  According to a fourth aspect of the present invention, in the on-vehicle playback device according to any one of the first to third aspects, the control unit of the on-vehicle playback device may stop the playback of the external media. If the external media is connected after the external media is removed from the connection part of the in-vehicle playback device by storing the stopped location by itself or recording the stopped location in the header of the external media It is possible to resume playback.

  According to a fifth aspect of the present invention, in the on-vehicle playback device according to any one of the first to fourth aspects, the control unit of the on-vehicle playback device has the external media removed, and the external media In the case where a change is made to the divided area including the portion where the previous reproduction was stopped, initial reproduction is performed for the divided area of the external medium reconnected based on the change information recorded in the header of the external medium. It is made possible.

  According to a sixth aspect of the present invention, in the in-vehicle playback device according to any one of the first to fifth aspects, the divided area is a pseudo-area for storing the storage area of the external media for each predetermined storage capacity. The storage area of the external medium is formed in a pseudo-divided manner with a predetermined number of folders or files instead of being divided into two.

  According to the present invention, in an in-vehicle playback device, even if the capacity of an external medium such as a USB memory is increased, the analysis time of the external medium is prevented from increasing, and the number of folders and tracks that can be played back during playback is increased. Can be prevented.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an on-vehicle playback device according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of the in-vehicle playback apparatus according to the present embodiment. The in-vehicle playback device 1 according to the present embodiment is provided with a control unit 2 that analyzes data stored in a CD, an external medium 8 or the like and plays back audio data. The control unit 2 includes a CD drive, Various reading means 3 such as an MD drive and a built-in HDD, an output unit 4, a display unit 5, and an operation unit 6 are electrically connected. The control unit 2 can be connected to an external medium 8 such as a USB memory via a USB terminal 7 serving as a connection unit.

  When the control unit 2 designates a source such as a CD, MD, HDD, or external medium 8 for reproducing audio data via the operation unit 6, and sets a reproduction method such as normal reproduction, random reproduction, and repeat reproduction. The data is read from the reading means 3 of the selected source and transmitted, the data is analyzed to reproduce the audio data, and the reproduced audio data is transmitted to the output unit 4 according to the set reproduction method. ing.

  When the display contents such as the time code, artist name, album name, song name, file name, folder name, etc. to be displayed on the display unit 5 are set via the operation unit 6, the control unit 2 The data corresponding to the display content set from is extracted and transmitted to the display unit 5.

  Various reading means are not limited to the above-mentioned CD drive, MD drive, and built-in HDD, but may include reading means for reading, for example, a cassette tape, an external HDD, a DVD (Digital Versatile Disc), and the like. It is also possible to provide a plurality of connection portions such as the USB terminal 7 so that a plurality of external media can be connected.

  The output unit 4 includes an unillustrated earphone or headphone, or a speaker built in the main body. The output unit 4 amplifies the audio data transmitted from the control unit 2 by an amplifying circuit (not illustrated), and externally outputs it as a reproduced audio signal. To output.

  The display unit 5 includes a display screen (not shown) composed of a light emitting means such as a fluorescent display tube, an LCD, and the like, and a time code or artist name is displayed on the display screen based on the display content information transmitted from the control unit 2. And so on.

  The operation unit 6 includes various keys such as a reproduction key, a stop key, and a cursor key, and outputs an operation signal generated by a user's key operation to the control unit 2. The operation unit 6 can designate a source from which audio data is to be reproduced from a CD, an external medium 8 or the like by selecting a source. The operation unit 6 can select the above-described reproduction method and display contents for each source. Therefore, the user can operate the various keys of the operation unit 36 while viewing the display screen of the display unit 35 to specify the source, set the playback method, set the display content, and the like.

  On the other hand, the control unit 2 divides the storage area of the external medium 8 connected to the USB terminal 7 in a pseudo manner for each predetermined storage capacity by a division process described later, and is selected by the user via the operation unit 6. The audio data is reproduced by analyzing the data for the divided areas.

  Here, in the present invention, the pseudo division of the storage area of the external medium is not performed by actually physically dividing the storage area of the external medium 8. For example, it is set automatically or by the user. When the set predetermined storage capacity is 2 gigabytes, when the first divided area is selected by the user, the data from the beginning of the storage area of the external medium 8 to the second gigabyte is analyzed, and the second divided area Is selected, data is analyzed from the 2 gigabyte + 1 byte to the 4 gigabyte of the storage area of the external medium 8 in a pseudo manner.

  When a file stored in the storage area is divided in the middle by the pseudo division of the storage area of the external medium 8, in the present embodiment, the control unit 2 automatically deletes the file. It belongs to the divided area on the rear side of the dividing position. Further, at this stage, the control unit 2 automatically causes the file to belong to the division area on the front side of the division position, or the file is divided into any of the division positions before and after the division position by the user through the operation unit 6. It is also possible to configure so as to select whether to belong to a region.

  Next, pseudo division processing and data analysis processing of the storage area of the external medium 8 in the control unit 2 of the in-vehicle playback device 1 according to the present embodiment will be described.

  FIG. 2 is a flowchart showing the division processing and data analysis processing in the control unit. In the control unit 2 of the in-vehicle playback device 1, first, pseudo division processing of the storage area of the external medium 8 is performed.

  That is, the control unit 2 performs pseudo division of the storage area of the external medium 8 according to the present invention with respect to the external medium 8 on the display screen of the display unit 5 in a state where the external medium 8 is connected to the USB terminal 7. An image asking whether or not to perform is displayed (step S1). Here, if the user selects not to perform the pseudo division according to the present invention (step S1: NO), the process proceeds to the conventional data analysis process in the in-vehicle playback apparatus shown in FIG.

  In addition, when the user selects to perform the pseudo division of the present invention (step S1: YES), the control unit 2 divides the division capacity, that is, the storage area of the external medium 8 in a pseudo manner. An image for setting the storage capacity is displayed on the display screen, and the setting by the user is awaited (step S2). Then, when the divided capacity is set by the key operation of the operation unit 6 by the user (step S2: YES), the storage area of the external medium 8 is divided in a pseudo manner for each divided capacity.

  At this time, as described above, in the present embodiment, when the file is divided in the middle by the pseudo division of the storage area of the external medium 8, the control unit 2 automatically divides the file after the division position. Belong to the divided area on the side. At this stage, when the control unit 2 causes the user to select whether the file belongs to any of the divided areas before and after the division position, the selected image is displayed on the display screen and waiting for the setting by the user. To determine the division position.

  In the setting of the divided capacity (step S2), when the control unit 2 divides the storage area of the external medium 8 for each predetermined divided capacity, the pseudo division of the present invention is performed. Is selected by the user (step S1: YES), the control unit 2 automatically divides the storage area in a pseudo manner with a predetermined division capacity.

  Subsequently, the control unit 2 performs data analysis processing.

  The control unit 2 displays on the display screen of the display unit 5 an image for setting which divided region of the divided region of the external medium 8 is to be played, and waits for the user's selection (step S3). When the divided area to be reproduced is selected by the user (step S3: YES), the control unit 2 subsequently determines whether or not there is data in the selected divided area (step S4). If is not stored, an error is notified (step S10) and the reproduction operation is terminated. At this time, it may be configured to return to the divided region selection (step S3) so as to select another divided region.

  When the control unit 2 determines that there is data in the selected divided region (step S3: YES), the control unit 2 analyzes the data in the divided region (step S5), and whether there is data that has not been analyzed yet. Is determined (step S6). If there is unanalyzed data, it is determined whether or not the amount of data that can be analyzed by the in-vehicle playback device 1 is exceeded (step S7), and analysis is possible until there is no unanalyzed data (step S6: NO). Data analysis is performed until a large amount of data is exceeded (step S7: NO).

  In the setting of the split capacity (step S2), since the split capacity is already set so as not to exceed the storage capacity corresponding to the data volume that can be analyzed by the in-vehicle playback device 1, it exceeds the data volume that can be analyzed. The determination of whether or not there is (step S7) may be omitted.

  Subsequently, the control unit 2 determines whether or not the analyzed data includes audio data that has been compressed to MP3 or the like and can be played back by the in-vehicle playback device 3 (step S8). If there is, it is reproduced (step S9). If there is no reproducible audio data, an error is notified (step S10) and the reproduction operation is terminated. Alternatively, as described above, it may be configured to return to the divided region selection (step S3) so as to select another divided region.

  As described above, according to the in-vehicle playback device 1 according to the present embodiment, the control unit 2 divides the storage area of the external medium 8 connected to the connection unit in a pseudo manner for each predetermined storage capacity, Data is analyzed only for the divided areas selected via the unit 6 and audio data is reproduced.

  Therefore, even if the storage capacity of the external medium 8 is increased, the storage capacity of the divided area is appropriately set and data analysis is performed for only one divided area, so that the analysis time of the data is not increased for a short time. It is possible to perform sound reproduction by performing analysis. Therefore, it is possible to perform audio reproduction without the user feeling any stress.

  Further, since the in-vehicle playback device 1 only analyzes the selected divided region, even if the storage capacity of the external medium 8 is increased, the analysis of the in-vehicle playback device 1 can be performed by appropriately setting the storage capacity of the divided region. The storage capacity corresponding to the possible data amount is not exceeded. Therefore, even if the in-vehicle playback device 1 can analyze and play back only a relatively small amount of data for spec reasons, all the audio data stored in the external medium 8 can be set by appropriately setting the storage capacity of the divided area. Can be played.

  Furthermore, since the division capacity of the external medium 8 is limited to the set storage capacity, the number of folders and tracks that can be reproduced in the audio medium is limited to an appropriate number. Therefore, it is possible to prevent the enormous number of reproducible folders and tracks, and it is easy for the user to search when searching for the next music to be listened to during audio playback. The problem that the user's stress is doubled due to the time and effort required to find the information is also solved.

  In the in-vehicle playback device 1 of the present embodiment, even when the external media 8 is once removed from the connection portion such as the USB terminal 7 and connected again, playback from the point where playback was stopped last time, that is, resume playback can be performed. In addition, when a change is made to the divided area including the portion where the previous playback was stopped when the external medium 4 is removed, the initial playback can be performed when reconnected. Yes.

  Specifically, for example, when playback of the external medium 8 is stopped, resume information of the location and the divided area is recorded in the header, and after the removal, the storage area of the external medium 8 is changed. In the header, change information to that effect is recorded.

  When the external media 8 is connected to the in-vehicle playback device 1 again, the in-vehicle playback device 1 reads the header, and if resume information is recorded, the previous playback is stopped after data analysis. Resume playback is performed from the place where it was done. Even if resume information is recorded in the header of the external medium 8, initial reproduction is performed if change information indicating that a change has been made is recorded.

  With this configuration, for example, when the same in-vehicle playback device 1 is used, it is convenient for the user, and after the external media 8 is removed, the in-vehicle playback device that is different from the original in-vehicle playback device 1 is used. Resume playback can also be performed when connected to a device, that is, for example, a vehicle-mounted playback device mounted on another vehicle.

  Further, instead of recording resume information or change information in the header of the external medium 8, or in addition to recording them, the resume information is stored in the storage means of the control unit 2 of the in-vehicle playback device 1. It is also possible to perform resume playback.

  That is, for example, a storage means (not shown) of the control unit 2 of the in-vehicle playback device 1 is configured by a nonvolatile storage device such as an EEPROM (Electrically Erasable Programmable Read-Only Memory), and the external media 8 connected to the connection unit The result of data analysis and the location where the reproduction was stopped are stored.

  When the external media 8 is once removed and then connected again to the connection portion of the in-vehicle playback device 1 and the user selects the same divided area as the previous time, the in-vehicle playback device 1 is selected. If the result of the data analysis of the divided area is the same as the previous result stored in the storage means, it is assumed that no change has been made to the divided area, and the resume reproduction is performed from the point where the previous reproduction was stopped. If the current data analysis result of the divided area is different from the previous result, it is determined that the divided area has been changed and initial reproduction is performed.

  Even if comprised in this way, a music etc. are reproduced | regenerated continuously from the location stopped last time, it is suitable for a user's convenience, and the convenience of the vehicle-mounted reproducing | regenerating apparatus 1 can be improved.

  By the way, as described above, in the in-vehicle playback device 1 according to the present embodiment, the case where the storage area of the external medium 8 is set or divided in a pseudo manner into the divided areas for each predetermined storage capacity has been described. However, the storage area of the external medium 8 may be configured to be pseudo divided by a predetermined number of folders or files.

  In this case, the configuration of the in-vehicle playback device 1 is as shown in FIG. 1, but the contents of the pseudo division processing of the storage area of the external medium 8 are slightly modified.

  As shown in FIG. 3, when the storage area of the external medium 8 is divided in a pseudo manner by a predetermined number of folders or files, the control unit 2 divides the display area of the display unit 5 as described above. Instead of the image for setting the capacity, an image for setting the number of files and the number of folders stored in the divided area is displayed, and the setting by the user is waited (step S11). When the user sets the number of files and the number of folders, the storage area of the external medium 8 is divided in a pseudo manner for each set number of files and number of folders.

  At this time, since the storage capacity corresponding to the data amount of each file or each folder is different, when the set number of files and the number of folders are stored in the divided area, the storage capacity of the divided area becomes the in-vehicle playback device 1. May exceed the storage capacity corresponding to the amount of data that can be analyzed. In such a case, in the setting of the number of files and the number of folders (step S11), processing such as issuing a warning and resetting the number of files is performed. It is preferable to limit the range to a storage capacity corresponding to the amount of data that can be analyzed.

  The data analysis process (steps S3 to S10) is the same as the flowchart of this embodiment shown in FIG.

  As described above, even when the in-vehicle playback system 1 is configured to divide the storage area of the external medium 4 in a pseudo manner by a predetermined number of folders or files, the same effect as in the above embodiment can be obtained.

It is a block diagram which shows the structure of the vehicle-mounted reproducing | regenerating apparatus concerning this embodiment. It is a flowchart which shows the division | segmentation process and data analysis process in the control part of the vehicle-mounted reproducing | regenerating apparatus concerning this embodiment. It is a flowchart which shows the modification of the process of FIG. It is a flowchart which shows the data analysis process in the conventional vehicle-mounted reproducing | regenerating apparatus.

Explanation of symbols

1 In-vehicle playback device 2 Control unit 6 Operation unit 7 USB terminal 8 External media

Claims (6)

A connection for connecting external media;
A control unit that divides the storage area of the external medium connected to the connection unit in a pseudo manner for each predetermined storage capacity;
An operation unit for selecting a divided area in which data is to be reproduced from among divided areas formed by the control unit being pseudo divided into the storage area of the external medium;
The in-vehicle playback device characterized in that the control unit analyzes data for a divided region selected via the operation unit and plays back audio data.   When the file containing the audio data stored in the storage area is divided by the pseudo division of the storage area of the external medium into the division area, the control unit determines the file as a division position. 2. It is possible to select whether to belong to a divided area on the front side of the divided position, to belong to a divided area on the rear side of the divided position, or to belong to a divided area before or after the divided position. The vehicle-mounted playback device described in 1.   The in-vehicle playback device according to claim 1, wherein the control unit is capable of setting the predetermined storage capacity.   The control unit of the in-vehicle playback device stores the stopped location by itself when playback of the external media is stopped, or records the stopped location in the header of the external media, The in-vehicle use according to any one of claims 1 to 3, wherein resume reproduction is possible when an external medium is connected after being removed from a connection portion of the in-vehicle reproduction device. Playback device.   The control unit of the in-vehicle playback device records the header in the external media when the external media is removed and the divided area including the location where the previous playback of the external media was stopped is changed. The in-vehicle playback device according to any one of claims 1 to 4, wherein initial playback is possible for the divided area of the external media reconnected based on the changed information.   Instead of forming the divided area by dividing the storage area of the external medium in a pseudo manner for each predetermined storage capacity, the divided area of the external medium is divided by a predetermined number of folders or files. The in-vehicle playback device according to any one of claims 1 to 5, wherein the on-vehicle playback device is formed.

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