KR200283668Y1 - Digital Audio Player for Car Audio System - Google Patents

Abstract

The present invention aims to provide a digital audio player that can be used as part of an existing automotive audio system.

In order to achieve the above object, the digital audio player of the present invention controls the power supply unit, the vehicle audio interface unit, the digital audio storage unit, the digital audio processing unit, the digital audio input unit, and each of these components. It is configured as a control unit, it is possible to operate or operate the digital audio player using the existing car audio, it is characterized in that it can listen to the content to be reproduced using the existing car audio system.

Description

Digital Audio Player for Car Audio System {Digital Audio Player for Car Audio System}

The present invention relates to a digital audio player, and more particularly to a digital audio player that can be used as part of an existing vehicle audio system.

Due to the recent development of digital audio technology, there is a wide range of digital audio formats such as MP3 and WMA that can provide high compression of 10: 1 or more, but can provide compact disc (CD) or higher quality in terms of sound quality. In the early days, such digital audio was mainly used in personal computers (PCs), but nowadays, not only personal computers but also various digital audio players supporting these digital audio formats are widely used. Audio players are widely used.

In addition, recently announced high-end automotive audio systems are also capable of reproducing these digital audio formats.

However, in order to play digital audio formats from car audio that does not support such digital audio, not only digital audio players are needed, but most car audio does not provide an additional audio input, so audio signals played by digital audio players are reproduced. In order to deliver the audio to car audio, an FM modulator or a cassette tape-shaped transmission device, commonly called a car pack, should be used. However, such a transmission device cannot deliver compact disc (CD) sound quality as it is, so that deterioration of sound quality is inevitable, and since it is completely separate from the existing car audio system, it is provided in a digital audio player or player. Since the operation must be performed using a remote control, the operation is inconvenient, and the risk of an accident during driving also increases.

From this, the present invention, in order to solve the conventional problems, as part of the existing vehicle audio system, it is possible to operate or operate using the operation function of the existing vehicle audio system, listening using the existing vehicle audio system It is an object to provide a digital audio player where possible.

1 illustrates an overall configuration of a digital audio player for a vehicle audio system according to an embodiment of the present invention,

FIG. 2 illustrates an example of a configuration of a power supply unit supplying power to a digital audio player viewed from a power source.

FIG. 3 illustrates an example of a configuration of a vehicle audio interface unit connected to a compact disk changer connection terminal to receive operation signals from vehicle audio and providing various types of information to the vehicle audio.

4 is a hard disk, a compact disk driver (Compact Disk Driver), MMC (Multi Media Card), RAM (RAM), Flash (Compact Flash), Smart Media (Smart Media), etc. An example of the configuration of the digital audio storage unit, alone or in combination, is shown.

FIG. 5 illustrates an example of a configuration of an audio output unit which decodes stored digital audio into pure audio data and outputs it in digital or analog form.

6 illustrates an example of a configuration of a digital audio input unit that receives digital audio data to be stored in the digital audio storage of FIG. 4.

FIG. 7 illustrates a configuration example of a control unit that controls each component such as FIGS. 2, 3, 4, 5, 6, and 8,

FIG. 8 is a display device in which LEDs, LCDs, VFDs, etc. are used alone or in combination, and switches, knobs, jogs, shuttles, pads, and sticks are provided. The example of a structure of the user operation part comprised by the operation apparatus which sticks etc. are independent or combined is shown.

Digital audio player for a vehicle audio system of the present invention for achieving the above object, and a power supply for supplying power to the digital audio player from a power source (power source); A vehicle audio interface unit connected to a compact disk changer connection terminal for receiving operation signals from the vehicle audio and providing various types of information to the vehicle audio; Hard Disk, Compact Disk Driver, Compact Media Driver, MMC, RAM, Flash, Compact Flash, Smart Media, etc. Or a combination of digital audio storage; An audio output unit for decoding the stored digital audio into pure audio data and outputting the digital audio in digital or analog form; A digital audio input unit for receiving digital audio data to be stored in the digital audio storage unit; A control unit for controlling each of the above components; It is configured as a feature.

Preferably, a display device composed of LEDs, LCDs, VFDs, etc., alone or in combination, a switch, a knob, a jog, a shuttle, a pad, It is characterized in that it further comprises a user operating portion composed of an operating device made of a stick or the like alone or in combination.

Hereinafter, with reference to the accompanying drawings, a digital audio player for a vehicle audio system according to an embodiment of the present invention will be described in detail.

FIG. 1 is a block diagram illustrating an overall configuration of a digital audio player for a vehicle audio system according to an embodiment of the present invention, and FIG. 2 is a view of a power supply unit supplying power to a digital audio player from a power source. 3 illustrates a configuration example of a vehicle audio interface unit which is connected to a compact disk changer connection terminal, receives an operation signal from the vehicle audio, and provides various types of information to the vehicle audio. 4 is a hard disk, a compact disk driver (Compact Disk Driver), MMC (Multi Media Card), RAM (RAM), Flash (Compact Flash), Smart Media (Smart Media) ) Shows an example of the configuration of the digital audio storage unit, which is configured alone or in combination, and FIG. FIG. 6 shows an example of a configuration of an audio output unit which decodes digital audio into pure audio data and outputs it in digital or analog form. FIG. 6 shows digital audio receiving digital audio data to be stored in the digital audio storage of FIG. An example of the configuration of the input unit is illustrated, and FIG. 7 illustrates an example of a configuration of a control unit that controls each component such as FIGS. 2, 3, 4, 5, 6, and 8, and FIG. LED, LCD, VFD, etc., or a combination of display devices, switches, knobs, jogs, shuttles, pads, sticks, etc. The example of a structure of the user operation part comprised by the operation apparatus which consists of or combined is shown.

As can be seen from Figure 1, the digital audio player for a vehicle audio system of the present invention receives the digital audio data to be reproduced from the outside through the digital audio input unit of Figure 6 collectively to store the digital audio of Figure 4 The control unit of FIG. 7 selects the content to be reproduced among the stored digital audio by receiving a user's operation signal through the vehicle audio interface unit connected to the Compact Disk Changer connecting terminal of FIG. 3 or the like. When the selected digital audio is supplied to the audio output unit of FIG. 5, the audio output unit of FIG. 5 decodes the digital audio data and outputs the decoded data in digital or analog format. It is input to the car audio through a compact disk changer connection terminal and the user can listen to it. In addition, the control unit of FIG. 7 connects the contents of the digital audio stored in the digital audio player for the vehicle audio system of the present invention, information on the current audio reproduction state, and the like to the compact disk changer of FIG. 3. The vehicle audio is transmitted to the vehicle audio through the vehicle audio interface unit connected to the terminal, and such information is transmitted to the user through the display device of the vehicle audio.

In addition, when there is a lack of an operation function or a display function of the car audio, the digital audio player for the car audio system of the present invention further includes a user operation unit of FIG. 8 to allow easier and more various operations and more information transfer. You can even display the title or lyrics of the song being played.

As can be seen in Figure 2, the power supply of the digital audio player for the automotive audio system of the present invention is generally not only under a DC 12V power supply from a vehicle, but also under a DC 5V power supply that can be easily obtained from a personal computer (PC). In addition, it is possible to supply a stable power to the digital audio player for the vehicle audio system of the present invention. Of course, the power supply voltage is not limited to these two types, and there is no limitation to the appropriate modification and application according to the environment in which the power supply voltage is to be operated.

Hereinafter, the operation of each component of the digital audio player for the vehicle audio system of the present invention configured as shown in FIG. 1 will be described in detail.

As shown in FIG. 2, the power supply unit converts a DC power input from the outside into a voltage required by a digital audio player for a vehicle audio system of the present invention. In this case, the voltage of the input power source may vary depending on the environment in which the digital audio player for the vehicle audio system of the present invention is to be operated, and the output voltage may also vary depending on how the digital audio player for the vehicle audio system of the present invention is configured. Therefore, the voltage specified in FIG. 2 is only one example and is not limited thereto, and may even be modified to accept an external AC power source.

As shown in FIG. 3, the vehicle audio interface unit is connected to a compact disk changer connection terminal and the like to control the digital audio player for the vehicle audio system of the present invention shown in FIG. It converts and transmits the signal suitable for the unit, and converts the signal transmitted from the control unit into a signal suitable for the vehicle audio and transmits the signal to the vehicle audio. Since general car audio can be used by connecting a compact disk changer, it can be used to exchange signals with the car audio, but this does not limit other signal exchange methods. Such a car audio interface unit may be configured to be suitable only for a specific car audio, but it is preferable to configure it to be suitable for almost all car audio.

As shown in FIG. 4, the digital audio storage unit stores digital audio data received by the digital audio input unit of FIG. 6, and then stores digital audio data stored at the time of reproduction of the digital audio unit in the audio output unit of FIG. 5. Will be supplied. Typical storage media that can be used for this purpose are Hard Disk, Compact Disk Driver, Multi Medla Card, RAM, Flash, Compact Flash. And smart media, but are not limited thereto. The digital audio storage unit is constituted by using one or a plurality of the above-described storage media or other storage media, and the combination possibilities of the storage media used are almost infinite, especially at the current rapid technological development rate.

As shown in FIG. 5, the audio output unit receives and decodes digital audio data, and outputs the decoded audio data as a digital or analog format signal. If you select a signal suitable for the car audio that you want to use by connecting the two types of output signals and input it to the car audio through the Compact Disk Changer connection terminal, you can listen to the signal through the car audio. It will be possible. Since general car audio can be used by connecting a compact disk changer, the audio signal can be input to the car audio by using the same, but the input means of the signal is not limited thereto.

As shown in FIG. 6, the digital audio input unit receives digital audio data from the outside and delivers the digital audio data to the digital audio storage unit of FIG. 4 so that the digital audio data can be stored. A device capable of inputting digital audio data into a digital audio player for a vehicle audio system of the present invention is not limited, but in general, since a personal computer (PC) will be used a lot, data from the personal computer (PC) in FIG. Only USB (Universal Serial Bus) 1.1, USB 2.0, serial I / O, and parallel I / O are suitable. However, the communication method for receiving data is not limited by this example, and one or a plurality of communication methods may be embedded. Serial input / output is often referred to as RS-232C or serial port, and parallel input / output is often referred to as printer port or parallel port.

As shown in FIG. 7, the control unit controls each component constituting the digital audio player for the in-vehicle audio system of the present invention so that digital audio input, storage, and reproduction are performed. In addition, by properly interpreting the signal transmitted from the vehicle audio interface of FIG. 3, the control necessary for the digital audio player for the vehicle audio system of the present invention to be properly operated as the user operates. In addition, the digital audio player for the vehicle audio system of the present invention is enumerated above through the vehicle audio interface unit of FIG. It delivers information such as car audio.

As shown in FIG. 8, the user manipulation unit includes a display device for transmitting information to a user, and an operation device for allowing a user to operate a digital audio player for a vehicle audio system of the present invention. In order to transmit information, the display device may be configured by using one or a plurality of components capable of transmitting LEDs, LCDs, VFDs, and other information to a user by visual or audio means. Manipulators to accept manipulation inputs can switch switches, knobs, jogs, shuttles, pads, sticks and other user's intentions into electrical signals. It can be configured using one or a plurality of parts that can be, and may even be configured to be operable by voice.

Although the technical idea of the present invention has been described together with the accompanying drawings, this is only one of the preferred embodiments of the present invention and does not limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

The digital audio player for a vehicle audio system of the present invention described in detail above can be used as a part of an existing vehicle audio system, and can be used as a digital audio format such as MP3 or WMA, which is widely used at low cost. It can be enjoyed through the system, and there is no effect of losing sound quality due to the transmission medium.

Claims (4)

A digital audio player that can be used as part of an existing automotive audio system, A power supply unit for supplying power to the digital audio player from a power source; A vehicle audio interface unit connected to a compact disk changer connection terminal for receiving operation signals from the vehicle audio and providing various types of information to the vehicle audio; Hard Disk, Compact Disk Driver, Compact Media Driver, Multi Media Card, RAM, Flash, Compact Flash, Smart Media, etc. Or a combination of digital audio storage; An audio output unit for decoding the stored digital audio into pure audio data and outputting the digital audio in digital or analog form; A digital audio input unit for receiving digital audio data to be stored in the digital audio storage unit; A control unit for controlling each of the above components; Including, MP3, WMA and other digital audio formats can be memorized and played back. The existing car audio can be used to operate or operate the digital audio player, and the existing car audio system can be used to operate the digital audio player. A digital audio player that can be used as part of an existing car audio system characterized by being able to listen to what is being played. The method of claim 1, A digital audio player that can be used as part of an existing in-vehicle audio system, further comprising a display device for delivering additional information for the user's convenience. The method of claim 1, A digital audio player that can be used as part of an existing in-vehicle audio system, further comprising an operating device for easy and versatile operation for user convenience. The method of claim 1, For the convenience of the user, digital audio that can be used as part of an existing vehicle audio system further comprises a user operation unit comprising a display device for transmitting additional information and an operation device for easy and various operations. Player.