KR100950177B1 - The control method of the car audio/video system - Google Patents

Abstract

PURPOSE: A control method of a car A/V(Audio/Video) system for external input is provided to give a user media reproduction authority when the user puts a USB(Universe Serial Bus) in the A/V system. CONSTITUTION: A control method of a car A/V(Audio/Video) system for external input is as follows. When a USB is put in while a music or moving picture file is reproduce, the presence of media files is determined(S101,S103). If media files exist, the media files in the USB are classified according to filename extension and saved in a storage part(S111,S113). A selection screen for selecting the classified media files is provided(S115). If specific media or a file manager function is selected from the selection screen, the selected media are successively reproduced, or a file manager mode is enabled(S117,S121).

Description

The control method of the car audio / video system for external input

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car audio / video system (CAR AV system) mounted on a vehicle, and more particularly, to a music file and an image according to a user's selection at the time of a USB input in an AV system having a portable storage device (USB) recognition function. The present invention relates to a control method of a car audio / video system for external input to selectively reproduce file pictures and document files.

In general, the vehicle is equipped with an AV system to reduce the hobby of the driver or boredom while driving in the vehicle. AV systems are developing rapidly with the development of automotive technology. AV systems currently provide audio output through media such as radio, data, and compact discs, as well as images through media such as televisions and digital video discs (DVDs).

As more people use multimedia devices, more people are listening to them even when they are in the car.

Therefore, the need for a device capable of sharing multimedia files stored in multimedia by connecting an AV system and a multimedia device (or USB) has emerged. As a result, a car AV capable of sharing files in a conventional portable storage device has been developed. The system has been developed and commercialized.

1 is a block diagram showing a configuration of a car AV system 100 that can share files of a general portable storage device, the multimedia control unit 10, the storage unit 20, the input unit 90 and the display unit 30 and It consists of an interface unit 40, a radio receiver unit 50, a compact disc player (CDP) 60, a digital video disc player (DVDP) 70, and an audio processor 80.

The multimedia controller 10 performs authentication of the portable storage device (USB) 200 and controls the overall operation of the car AV system 100.

The storage unit 20 is a memory that stores a control program for controlling the operation of the car AV system 100 having an authentication function using the portable storage device 200 and temporarily stores data generated while the control program is executed. In other words, it is desirable to implement a digital storage device.

The input unit 90 includes a mode key, a search and preset key, a portable storage device registration key, etc. for the user to control the AV system 100, and generates key data for the keys and outputs the generated key data to the multimedia controller 10. do.

The display unit 30 is a display device such as a liquid crystal display (LCD), and displays the operation mode, operation state, and image of the car audio / video system under the control of the multimedia control unit 10.

The interface unit 40 has a port to which the portable storage device 200 can be connected. When the portable storage device 200 is connected through the port, the interface unit 40 connects the data to the multimedia control unit 10 according to a predetermined communication protocol. Perform communication. Such an interface unit generally applies a general-purpose serial bus protocol scheme.

The radio receiver 50 receives a radio broadcast radio signal, and tunes and outputs a desired broadcast channel from the radio broadcast radio signal received during operation under the control of the multimedia controller 10.

The compact disc player 60 tunes and outputs a desired broadcast channel from a radio broadcast radio signal received during driving under the control of the multimedia controller 10.

The digital video disc player 70 reads audio and video data recorded on the digital video disc and outputs the same to the multimedia controller 10 when the digital video disc player 70 is driven under the control of the multimedia controller 10.

The audio processor 80 processes the audio signal output from the radio receiver 50 under the control of the multimedia controller 10 and outputs the audio signal through the speaker SP as an audible sound, and the compact disc player 60 and the digital video. Receives audio data output from the disk player 70, converts the audio data into an audio signal, and outputs the audible sound through the speaker SP, and reproduces the audio data when the music file stored in the portable storage device 200 is reproduced. To convert to to output the audible sound through the speaker (SP).

A general car AV system that performs this function is provided with a function to play music files or video files stored in a portable storage device (USB), or to view picture files or document files.

2 is a flowchart illustrating a process of processing a file stored in a USB by connecting to a conventional USB in a general car AV system. Where S stands for Step.

As shown in the drawing, a method of processing a file stored in a USB device in a conventional car AV system includes reproducing a music or video file (S11), checking a USB input (S13), and recognizing a USB (S15). ), If the connected USB is not recognized, displaying an error message (S17), returning to the previous AV mode after displaying the error message (S19), and playing a music file of the USB when the connected USB is recognized. (S21).

According to the control method of the conventional car AV system configured as described above, if USB is input as in step S13 while playing a music or video file as in step S11, the control proceeds to step S15 to check whether the USB is recognized.

If the USB is not recognized after that, go to step S17 to display an error message, go to step S19 to return to the previous AV mode. In other words, if the video file is previously played, the video file is returned to the video file playback mode.

On the other hand, if the USB is recognized as a result of the check in step S15, go to step S21 to switch to the audio play mode to play the music files stored in the USB sequentially.

That is, in the conventional AV system as described above, the control method when inputting a USB device automatically considers the intention that the user wants to listen to the music file of the USB storage device when the USB device is input, and automatically plays the music files of the USB sequentially.

Therefore, there is a problem that the user is uncomfortable and dissatisfied by unnecessarily requesting an additional operation to the user who is unconditionally playing the music file to view the image file or the document file of the USB device or the user who just wants to plug in the USB.

Accordingly, the present invention is proposed to solve the inconvenience caused in the control method of the conventional car AV system as described above,

The problem to be solved by the present invention is to provide an external input that can selectively play music files, video files, pictures and document files according to user's selection in the AV system with a portable storage device (USB) recognition function. The present invention provides a control method of a car audio / video system.

Another object of the present invention is to provide a video screen for selecting a music file playback, video playback, and file manager when a portable storage device is input, and provides car audio for an external input for granting media playback authority to a user. / To provide a control method for the video system.

According to the present invention for solving the above problems, the "control method of the car audio / video system for external input",

A method for controlling a car audio / video system for sharing files stored on a connected portable storage device (USB),

A first step of determining whether a media file exists by performing a recognition process when a portable storage device is input while playing a music or video file;

A second step of classifying the media stored in the portable storage device according to the extension name and storing the media according to the extension name if the media file exists;

A third step of providing a selection screen for selecting classified media stored in the storage unit;

If a specific media or file manager function is selected on the selection screen, the method further includes playing the selected media or switching to a file manager function mode.

Preferably, in the "control method of the car audio / video system" according to the present invention, the selection screen includes a USB music file selection icon, a USB video file selection icon, and a USB file manager icon for USB file management. do.

In addition, the "control method of the car audio / video system" according to the present invention,

If the USB is not recognized as a result of performing the recognition process in the first step, the method further includes a fifth step of displaying an error message and automatically returning to the previous audio / video mode.

And a sixth step of automatically returning to the previous audio / video mode when the media file does not exist as a result of checking whether the media file of the first step exists.

The fourth step includes automatically returning to the previous AV mode if a specific media or file manager function is not selected within a preset time on the selection screen.

According to the control method of the car audio / video system for external input according to the present invention, music files, picture files, pictures and document files can be selectively played according to the user's selection during USB input, thereby giving the user the right to select. Of course, there is an advantage to solve the inconvenience and complaints of the user caused by automatically playing the music file even if the user did not intend as before.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention. Before describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Here, media refers to the infotainment that can be provided in a car audio / video system (eg, music, video, photographs, documents).

The car audio / video system to which the "control method of the car audio / video system for external input" according to the present invention is applied adopts the configuration of the general car audio / video system of FIG. However, when the portable storage device (USB) 200 is connected to the multimedia control unit 10, the technical problem according to the present invention is achieved through software processing. Hereinafter, the configuration and operation of the general car audio / video system of FIG. 1 well known for the car audio / video system will be described.

3 is a flowchart illustrating a "control method of a car audio / video system for external input" according to the present invention. As shown in FIG. 3, when a portable storage device is input while playing a music or video file, a recognition process is performed. First steps (S101 to S105 and S111) to check whether a media file exists; A second step (S113) of classifying the media stored in the portable storage device according to the extension name and storing the media according to the extension name if the media file exists; A third step (S115) of providing a selection screen for selecting classified media stored in the storage unit; A fourth step (S117, S121) of sequentially playing the selected media or switching to a file manager function mode when a specific media or file manager function is selected on the selection screen; A fifth step (S107 to S109) of displaying an error message and automatically returning to the previous audio / video mode when the USB is not recognized as a result of performing the recognition process in the first step; And a sixth step S109 of automatically returning to the previous audio / video mode when the media file does not exist as a result of checking whether the media file of the first step exists.

The "method of controlling the car audio / video system for external input" according to the present invention, as described above, is performed in step S101 when a portable storage device (USB) is input in step S103 while playing a music or video file. Go to S105 and perform the USB recognition process.

In this case, if the USB is not recognized, the process moves to step S107 to display an error message, and the process goes to step S109 to return to the previous AV mode. In this case, the error message may be displayed on the screen of the display unit 30.

On the contrary, if the USB is normally recognized, the process proceeds to step S111 to check whether the media file exists. If the media file does not exist, the process proceeds to step S109 and automatically returns to the previous audio / video mode. For example, if you were playing a music file before, it will automatically switch back to playing music files.

In addition, if the media file exists as a result of the check, the file stored in the portable storage device (USB) is classified into media according to the extension name and stored in the storage unit 20.

Thereafter, the process moves to step S115 to provide a selection screen for selecting classified media stored in the storage unit 20. The selection screen includes a USB music file selection icon, a USB video file selection icon, and a USB file manager icon for USB file management. In this example, three icons are simplified in consideration of the use frequency and convenience according to the vehicle environment, but it is possible to add and expand pictures and document icons.

The user sees the selection screen displayed on the screen, selects the icon of the desired media, and does not want to play the media, and simply plugs the USB into the audio / video system and does nothing. Here, the method of selecting a specific media by viewing the selection screen may be performed by moving a cursor using a moving key provided in the input unit 90 and selecting an icon of a desired media by operating a key for selecting a media.

If the user did not take any action simply hoping to plug the USB into the audio / video system, in step S117, the specific media is selected or the file manager function is selected so that no specific media is selected and the file manager function is also selected. If not, it moves to step S119 to check whether a preset time (for example, 10 seconds) has elapsed. After that, if no function is selected by the user during the above set time, it is determined that the user simply wants to plug only the USB into the audio / video system, and goes to step S109 to automatically return to the previous audio / video mode. Done.

In addition, when a specific media or file manager function is selected by the user, the process moves to step S121 to sequentially play the selected media or to switch to the file manager function mode to perform the function according to the user's operation. Since the selected media playback or file manager function is performed in the same manner as before, a detailed description thereof will be omitted.

In other words, the present invention provides a user with the right to implement a media through a media selection screen, thereby eliminating the inconvenience caused by playing an existing music file unconditionally, and making it possible to play a desired media more conveniently and easily.

1 is a block diagram showing the configuration of a typical car audio / video system.

Figure 2 is a flow chart showing a control method when the USB input in the conventional car audio / video system.

Figure 3 is a flow chart illustrating a control method when the USB input in the car audio / video system for the external input according to the present invention.

Explanation of symbols for the main parts of the drawings

100: car audio / video system 10: multimedia control unit

20: storage unit 30: display unit

40: interface unit 200: portable storage device (USB)

Claims (5)

A method for controlling a car audio / video system for sharing files stored on a connected portable storage device (USB), A first step of determining whether a media file exists by performing a recognition process when a portable storage device is input while playing a music or video file; A second step of classifying the media stored in the portable storage device according to the extension name and storing the media according to the extension name if the media file exists; A third step of providing a selection screen for selecting classified media stored in the storage unit; Controlling a car audio / video system to an external input, comprising a fourth step of sequentially playing the selected media or switching to a file manager function mode when a specific media or file manager function is selected on the selection screen. Way. The car audio / video system of claim 1, wherein the selection screen comprises a USB music file selection icon, a USB image file selection icon, and a USB file manager icon for USB file management. Control method. The method of claim 1, further comprising: a fifth step of displaying an error message and automatically returning to the previous audio / video mode when the USB is not recognized as a result of the recognition process in the first step. Control of car audio / video system for input. The method of claim 1, further comprising the step of automatically returning to the previous audio / video mode when the media file does not exist as a result of checking whether the media file of the first step is present. Control method of audio / video system. The method of claim 1, wherein the fourth step includes automatically returning to a previous AV mode if a specific file or file manager function is not selected within a preset time on the selection screen. Control method of audio / video system.

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