JP2009042583A - Content reproduction device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a "content reproduction device" which warns of disconnection of a medium device when starting an apparatus. <P>SOLUTION: An audio reproduction device comprises: an extraction part 50 which extracts identification information or the like of the connected medium device; a memory 52 which stores identification information, reproduced information or the like extracted by an extraction part 50; a determination part 54 which compares the identification information stored in the memory 52 with the identification information extracted by the extraction part 50 when the device is started and determines whether the medium device 30 corresponding to the identification information stored in the memory 52 is unconnected or not; and a presentation part 56 which gives an alarm by means of voice or visually with respect to the medium device 30 determined to be unconnected on the basis of the result output by the determination part 54. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a content playback apparatus capable of connecting a plurality of media devices and playing back content recorded on the media devices, and more particularly, to a media device removal notification.

  Currently, in-vehicle audio apparatuses capable of reproducing content data such as audio data stored in a USB memory or a portable audio terminal are in widespread use. The in-vehicle audio apparatus can connect various types of media devices using a USB connector or a card slot, and can search audio data stored in the media device or reproduce desired audio data.

  The connection device disclosed in Patent Document 1 warns the user in advance that the connected device has been accidentally inserted or removed or locked, and enables transmission / reception via a cable that causes a failure in advance. ing.

JP 2002-352904 A

  Since the media device is connected using a USB connector or a card slot, the user can easily remove it regardless of the power state of the audio apparatus. In the case of an in-vehicle audio device, when the device is terminated and the user leaves the vehicle, the user often removes and carries the media device for security or use elsewhere. For this reason, when returning to the vehicle and activating the audio device, the user may forget to reconnect the removed media device. At this time, the user cannot recognize that the media device is not connected until he / she tries to listen to the music recorded on the media device.

  The present invention has been made in order to solve the above-described conventional problems, and an object of the present invention is to provide a content reproduction apparatus that can notify the removal state of a media device when the apparatus is activated.

  The content reproduction apparatus according to the present invention stores identification means for identifying the connected media device and first identification information of the media device identified by the identification means when the content reproduction apparatus is terminated. And means for comparing the second identification information of the media device identified by the identification means and the first identification information at the time of activation of the content reproduction apparatus, and content reproduction based on the comparison result of the comparison means Determining means for determining whether or not the media device at the end of the device is unconnected, and presenting means for presenting that the media device is not connected when the determining means determines that the media device is not connected .

  Preferably, the storage means further stores reproduction information of the content that was being reproduced when the content reproduction apparatus was terminated, and the presentation means presents the reproduction information on a display. The reproduction information includes any one of a media device name, a content name being reproduced, and a reproduction time.

  Preferably, the first identification information includes third identification information for identifying a last media device used when the content reproduction apparatus is terminated when a plurality of media devices are connected, The determination unit does not determine that the other media device at the time of termination of the content reproduction apparatus is not connected when at least the third identification information matches the second identification information. The media device includes a storage medium for storing content and a content playback function for playing back the content stored in the storage medium.

  In the method of notifying a removed media device according to the present invention, when the content playback apparatus is terminated, the step of storing first identification information for identifying the media device connected to the content playback apparatus; When activated, the step of comparing the first identification information with the second identification information of the media device connected to the content playback device, and the media device at the time of termination of the content playback device based on the comparison result Determining whether or not the connection is established, and notifying that the media device is not connected when it is determined that the connection is not established.

  The extracted media device notification program according to the present invention includes a step of storing first identification information for identifying a media device connected to a content playback device when the content playback device is terminated; When activated, the step of comparing the first identification information with the second identification information of the media device connected to the content playback device, and the media device at the time of termination of the content playback device based on the comparison result Determining whether or not the connection is established, and notifying that the media device is not connected when it is determined that the connection is not established.

  According to the present invention, at the time of starting the apparatus, the first identification information at the end of the apparatus is compared with the second identification information at the time of starting the apparatus, and whether or not the media device at the end of the apparatus is unconnected. Since this is determined and presented, the user can immediately recognize whether or not the media device is not connected when the apparatus is activated.

  The best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of an audio playback apparatus according to an embodiment of the present invention. The audio playback apparatus 10 includes a plurality of connectors 12 to which a plurality of media devices 30 can be connected, an interface (I / F) 14 connected to the plurality of connectors 12, and audio data from the media devices 30 via the interfaces 14. A digital / analog converter (DAC) 16 that acquires and converts a digital audio signal into an analog audio signal, an amplifier 18 that amplifies the analog audio signal, a speaker 20 that converts the amplified audio signal into an audible sound, and a user Input unit 22 including a rotary encoder or the like for receiving the input, a display 24 for displaying the music title of audio data recorded in the media device 30, a memory 26 for storing various data, and a micro for controlling each unit control And a 28.

  The media devices 30a to 30c are connected to the connector 12 by, for example, a USB cable. The connection method is not limited to a wired connection such as a USB cable, and may be a wireless connection. The media devices 30a to 30c are not limited to storage media such as a CD, DVD, or USB memory for storing audio data, but include storage media such as a hard disk for storing audio data. It may have the function to do.

  The input unit 22 outputs an operation signal for starting or ending the audio playback device 10 to the microcontroller 28 based on a user operation. As a result, the microcontroller 28 can receive the operation signal and activate or terminate the audio playback device 10.

  FIG. 2 is a block diagram showing a functional configuration of the microcontroller 28. The microcontroller 28 extracts the identification information of the connected media device 30 and the reproduction information of the audio data, and the identification information extracted by the extraction unit 50 when the audio reproduction device 10 is terminated. The memory 52 for storing the reproduction information and the identification information stored in the memory 52 when the audio reproduction device 10 is activated are compared with the identification information extracted by the extraction unit 50 and stored in the memory 52. The determination unit 54 that determines whether or not the media device 30 corresponding to the identification information is unconnected, and the audio or the media device 30 determined to be unconnected based on the determination result output by the determination unit 54 And a presentation unit 56 for visually warning.

  The extraction unit 50 identifies the media device 30 connected to the interface 14 and extracts the identification information of the media device 30 and the playback information related to the audio data recorded on the media device 30 and currently played back. Can do. The reproduction information is, for example, information related to the song name, album name, artist name, track number, reproduction time, stored media device, and the like of the song being reproduced. The extraction unit 50 outputs the extracted identification information and reproduction information to the memory 52 based on the operation signal (end operation) output from the input unit 22 when the audio reproduction device 10 is terminated. The output identification information and reproduction information are stored in the memory 52.

  The determination unit 54 identifies the identification information stored in the memory 52 and the identification information extracted by the extraction unit 50 based on an operation signal (activation operation) output from the input unit 22 when the audio playback device 10 is activated. And compare. Thereby, it is possible to compare the connection state of the media device 30 when the audio playback device 10 is terminated and when the audio playback device 10 is activated. When the identification information stored in the memory 52 does not match the extracted identification information, it is determined that the media device 30 corresponding to the mismatched identification information is not connected. Accordingly, the determination unit 54 can specify the media device 30 that has been removed before the audio playback device 10 is terminated and activated.

  FIG. 3 is a diagram for explaining a determination method by the determination unit 54. The identification information stored in the memory 52 indicates the media device 30 that was connected when the audio playback device 10 was terminated, and the extracted identification information was connected when the audio playback device 10 was activated. The media device 30 is shown. The determination unit 54 compares these pieces of identification information at the time of activation, and determines whether or not the identification information stored in the memory 52 matches the identification information extracted by the extraction unit 50. Here, the term “match” includes not only perfect match but also partial match.

  For example, in FIG. 3A, “device A”, “device B”, and “device C” are stored in the memory 52 as identification information. On the other hand, the identification information extracted at the time of activation is “device A” and “device C”. At this time, the determination unit 54 determines that the media device 30 corresponding to “device B” is not connected because “device B” stored in the memory 52 does not match.

  In FIG. 3B, “device A”, “device B”, and “device C” are stored in the memory 52 as identification information. On the other hand, the identification information extracted at startup is “device A”, “device B”, and “device C”. At this time, the determination unit 54 does not determine that the media device 30 is not connected because the identification information completely matches.

  In FIG. 3C, “device A” and “device B” are stored in the memory 52 as identification information. On the other hand, the identification information extracted at startup is “device A”, “device B”, and “device C”. At this time, the determination unit 54 does not match completely because “device C” does not match, but “device A” and “device B” stored in the memory 52 partially match the extracted identification information. It is not determined that the media device 30 is not connected.

  The presentation unit 56 displays on the display 24 that the media device 30 is not connected based on the determination result output from the determination unit 54, and warns the user. The warning method is not limited to a warning by display display, but may be a warning sound or warning message using the speaker 20. Thereby, the presentation unit 56 can prompt the user to reconnect the unconnected media device 30.

  On the other hand, based on the reproduction information stored in the memory 52, the presentation unit 56 can display the reproduction information of the audio data that was being reproduced when the audio reproduction device 10 ended on the display. Here, the presentation unit 56 may add the reproduction information to the warning and display it.

  FIG. 4 is a conceptual diagram for explaining a warning presenting operation in the audio reproducing apparatus according to the present embodiment. The audio playback device 10 displays a warning message on the display 24 when the media device 30b connected at the time of termination is not connected at the time of activation. Thus, the user can recognize that the removed media device 30b is not connected when the audio playback device 10 is activated.

  Next, the warning presenting operation in the audio reproducing apparatus of the present embodiment will be described with reference to the flowchart of FIG. When the audio playback device 10 is activated, the extraction unit 50 extracts the identification information of the media device 30 connected to the interface 14 via the connector 12 and the playback information related to the audio data currently being played back (step S101). ).

  Next, the audio playback device 10 is terminated (step S102). At this time, the input unit 22 transmits an operation signal (end operation) to the microcontroller 28 based on a user instruction. When receiving the operation signal, the extraction unit 50 outputs the extracted identification information and reproduction information to the memory 52. The output identification information and reproduction information are stored in the memory 52 (step S103).

  Thereafter, the audio playback device 10 is activated (step S104). At this time, the input unit 22 transmits an operation signal (startup operation) to the microcontroller 28 based on a user instruction. When the audio playback device 10 is activated, the presentation unit 56 displays the playback information stored in the memory 52 on the display 24 (step S105). Thereby, the information regarding the audio data being reproduced at the end is displayed.

  FIG. 6 is a diagram illustrating a display example of reproduction information displayed on the display 24. For example, when the audio playback device 20 is terminated, the device name 80, the album name 82, the artist name 84, the song name 86, and the playback corresponding to the media device 30 in which the music being played was stored. Time 88 is displayed on the display 24. In addition to this, other reproduction information such as a track number may be displayed. When the reproduction information is displayed on the display 24, the extraction unit 50 extracts the identification information of the media device 30 that is currently connected (step S106).

  Next, the determination unit 54 compares the identification information stored in the memory 52 with the identification information extracted by the extraction unit 50 (step S107), and the media device 30 is not connected based on the comparison result. It is determined whether or not (step S108). When it is determined that the media device 30 is not connected, the presentation unit 56 displays a warning that the media device 30 is not connected based on the determination result received from the determination unit 54 (step S109).

  FIG. 7 is a display example of a warning by the presentation unit 56. As shown in FIG. 7A, the warning message 90 is displayed, for example, “Media device B is not connected” on the screen of the reproduction information displayed at the substantially central portion of the display 24 in step S105. If there are a plurality of unconnected media devices, for example, a warning “Media device A and media device B are not connected” is displayed. In the display example shown in FIG. 7B, when the audio playback device 10 is terminated, playback information regarding the audio data being played back is added to the warning message 90 as a comment 92. The comment 92 is created based on the reproduction information stored in the memory 52.

  With the above operation, the user can recognize that the removed media device 30 is not connected when the audio playback device 10 is activated.

  Next, an audio playback apparatus 10 according to the second embodiment will be described. As shown in FIG. 8, the audio playback device 10 according to the second embodiment has a media device 30a instead of the media device 30b when it is terminated, even if there is a media device 30b that is not connected at the time of activation. If used, no warning is presented on the display 24.

  In the second embodiment, the extraction unit 52 can extract the usage information for identifying the media device 30 that is currently used, and stores the identification information, the playback information, and the usage information in the memory when the audio playback device 10 ends. 52.

  FIG. 9 is a diagram illustrating a determination method by the determination unit 54 according to the second embodiment. The identification information stored in the memory 52 indicates the media device 30 that was connected when the audio playback device 10 was terminated, and the extracted identification information was connected when the audio playback device 10 was activated. A media device 30 is shown. The identification information indicated by hatching indicates the media device 30 a used at the end corresponding to the usage information stored in the memory 52.

  When the audio playback device is activated, the determination unit 52 determines that the identification information “device B” stored in the memory 50 does not match as in the first embodiment. However, when the identification information “device A” corresponding to the usage information matches the identification information extracted by the extraction unit 50, even if it is determined that “device B” does not match, it is not determined that the device is not connected. As a result, a warning can be presented to the user only when the media device 30a used at the end of the audio playback device 10 is not connected.

  In the above embodiment, a warning is presented when the media device used at the time of termination of the audio playback apparatus is not connected. However, the warning need not be presented under certain conditions. For example, the memory 52 stores the end time of the audio playback device, and the presentation unit 56 does not present a warning when activated after a certain period of time has elapsed. This is because the warning may be annoying if the audio playback device is not activated for a certain period of time.

  In the above embodiment, the audio playback device has been described. However, the content playback device of the present invention may be another content playback device such as a visual playback device or a navigation device. At this time, the media device stores video data, road map data, and the like.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific embodiments according to the present invention, and various modifications can be made within the scope of the gist of the present invention described in the claims. Deformation / change is possible.

  The present invention is used in a content playback apparatus that connects a plurality of media devices and plays back content stored in the media devices.

It is a block diagram which shows the structure of the audio reproduction apparatus based on the Example of this invention. It is a block diagram which shows the functional structure of a microcontroller. It is a figure explaining the determination method by a determination part. It is a conceptual diagram explaining the warning presentation operation | movement in the audio reproduction apparatus which concerns on a present Example. It is a flowchart explaining the warning presentation operation | movement in the audio reproduction apparatus which concerns on a present Example. It is a figure which shows the example of a display of the reproduction | regeneration information by a presentation part. It is an example of a warning display by a presentation part. It is a conceptual diagram explaining the warning presentation operation | movement in the audio reproduction apparatus which concerns on a 2nd Example. It is a figure explaining the determination method which concerns on a 2nd Example.

Explanation of symbols

10: Audio playback device 12: Connector 14: Interface 16: DAC
18: Amplifier 20: Speaker 22: Input unit 24: Display 26: Memory 28: Microcontroller 30: Media device 50: Extraction unit 52: Memory 54: Determination unit 56: Presentation unit 90: Warning message

Claims (7)

A content playback apparatus capable of connecting at least one media device and playing back content recorded on the media device,
An identification means for identifying the connected media device;
Storage means for storing first identification information of the media device identified by the identification means when the content reproduction apparatus is terminated;
Comparison means for comparing the second identification information of the media device identified by the identification means with the first identification information when the content playback apparatus is activated;
Determining means for determining whether or not the media device at the time of termination of the content reproduction apparatus is unconnected based on the comparison result of the comparing means;
Presenting means for presenting that the media device is not connected when the determining means determines that it is not connected;
A content reproduction apparatus having The content reproduction apparatus according to claim 1, wherein the storage unit further stores reproduction information of content that was reproduced when the content reproduction apparatus was terminated, and the presentation unit presents the reproduction information on a display. . The content reproduction apparatus according to claim 1, wherein the reproduction information includes any one of a media device name, a content name being reproduced, and a reproduction time. The first identification information includes third identification information for identifying the last media device used when the content reproduction apparatus is terminated when a plurality of media devices are connected. The content playback apparatus according to claim 1, wherein when at least the third identification information matches the second identification information, another media device at the time of termination of the content playback apparatus is not determined to be unconnected. The media device includes a storage medium for storing content, and a content playback function for playing back the content stored in the storage medium.
The content reproduction apparatus according to any one of claims 1 to 4. A method of notifying a removed media device in a content playback apparatus capable of connecting at least one media device and playing back content recorded on the media device, comprising:
Storing first identification information for identifying a media device connected to the content reproduction device when the content reproduction device is terminated;
Comparing the second identification information of the media device connected to the content reproduction device with the first identification information when the content reproduction device is activated;
Determining whether the media device at the time of termination of the content reproduction apparatus is not connected based on the comparison result; and
A step of notifying that the media device is not connected when it is determined as not connected;
Method of notifying an unplugged media device having A notification program for an unplugged media device in a content playback apparatus capable of connecting at least one media device and capable of playing back content recorded on the media device,
Storing first identification information for identifying a media device connected to the content reproduction device when the content reproduction device is terminated;
Comparing the second identification information of the media device connected to the content reproduction device with the first identification information when the content reproduction device is activated;
Determining whether the media device at the time of termination of the content reproduction apparatus is not connected based on the comparison result; and
A step of notifying that the media device is not connected when it is determined as not connected;
Notification program for unplugged media device.

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