KR200334242Y1 - Portable MP3 AUDIO Cartridge Player - Google Patents

Abstract

The present invention devises a device that can enjoy digital audio data by inserting it like a cassette tape into an analog sound device or a car audio of a vehicle without changing the existing system, and can be used as an MP3 player when carrying.

The structure of the present invention includes a cartridge matching unit, an MP3 player unit, a storage unit, an audio matching unit, an LCD matching unit, a power supply unit, a USB matching unit, and a sensor. ) And the like.

Description

Portable MP3 Audio Cartridge Player {Portable MP3 AUDIO Cartridge Player}

The present invention uses a flash memory that stores digital audio data as an audio storage medium, which can be used like a cassette tape, which is a storage medium of an existing analog sound device, and is a multipurpose audio device that can independently operate as a portable MP3 player.

The technical fields of the present invention are cartridge matching unit, MP3 playback unit, storage unit, audio matching unit, LCD matching unit, power supply unit, USB matching unit and sensor It is a technical field related to a device composed of parts and the like.

Fig. 2 is a simple configuration diagram of a cassette tape which is an existing analog storage medium. As shown in the drawing, a cartridge matching unit 90 for reproducing an analog signal, a storage medium unit 100 including a tape storing an analog signal, etc. It consists of.

3 is a simplified configuration diagram of a general MP3 capable of processing conventional digital audio data. As shown in FIG. 3, an analog signal output unit 110 and digital audio data for transmitting an analog signal to an external connection device (eg, an earphone) are illustrated. MP3 decoder unit 120 to decode the power supply, the power supply unit 130 to supply power required from the system to receive power from the battery, a plurality of operation buttons for the user to operate the LCD matching to display the status of the system The unit 140, a storage unit 150 using a flash memory for storing digital audio data, and a USB matching unit providing a path for downloading digital audio data through an external device (for example, a PC). 160).

Such conventional audio cassette tapes cannot store digital audio data, and conventional digital audio (for example, MP3) cannot be applied without changing existing audio equipment or car audio.

Such conventional audio cassette tapes and conventional digital audio MP3 players, etc., exist as separate media and players and cannot support each function at the same time.

The present invention provides a cartridge function for storing digital audio data, so that the user can record the latest audio data that the user prefers, and can change it as necessary at any time. The digital audio data is converted into analog signals to convert existing audio equipment and a car. Since the analog audio signal can be received without changing the mechanism for receiving analog signals such as audio, the digital audio data (MP3) can be listened to by analog sound equipment. In addition, it provides a portable MP3 player function that can be separated and carried independently without using existing audio equipment or car audio, allowing users to enjoy rich digital audio data anytime and anywhere.

1 is a block diagram of a portable MP3 audio cartridge player device proposed in the present invention.

<Description of the symbols for the main parts of the drawings>

10: cartridge matching unit 20: MP3 playback unit

30: storage unit 40: sound matching unit

50: LCD matching unit 60: USB matching unit

70: power supply unit 80: detection unit

90: analog cartridge matching unit 100: analog storage device

110: analog signal output unit 120: MP3 playback unit

130: power supply unit 140: LCD matching unit

150: storage unit 160: USB matching unit

The configuration of the present invention is a cartridge matching unit, MP3 playback unit, storage unit, audio matching unit, LCD matching unit, power supply unit, USB matching unit and sensor ) And the like. 1 is a block diagram of a portable MP3 audio cartridge player device according to the present invention.

1. Cartridge matching part (10)

The cartridge matching unit 10 has a function of matching with the cassette device of the existing acoustic device. It is responsible for delivering the analog signal reproduced and converted in MP3 to the input part of the analog audio device through the head part which takes the existing cassette magnetic music information. The MP3 playback unit 20 opens the path of the acoustic information to the cartridge matching unit 10 when the product is inserted into the cartridge of the existing acoustic device through the information of the sensor unit 80 and at this time plays the MP3. The unit 20 is selected as the fixed pitch and the volume can be controlled by the pitch of the external device. Therefore, no additional volume control is required when switching to cartridge mode by the volume adjusted in the portable mode.

2. MP3 Playback (20)

The MP3 playback unit downloads the music file through the USB matching unit 60 through a PC, etc., and stores the music file in the storage unit 30, and processes the system according to a plurality of user buttons through the LCD matching unit 50. LCD control function to display information and user information. The MP3 playback unit receives the portable mode / cartridge mode information through the sensing unit 80 and reproduces and converts the analog signal to the acoustic matching unit 40 in the portable mode and the cartridge unit 10 in the cartridge mode. Determine the path. In addition, the MP3 playback unit 20 has a function of receiving an external sound through the sound matching unit 40 and recording it in the storage unit.

3. Storage unit (30)

The storage unit 30 is composed of a flash ROM storing various sound information and can be extended up to 1G byte.

4. Audio Matching Unit 40

The acoustic matching unit 40 allows the microphone and the earphone to be matched when the device of the present invention operates as an independent MP3 player, and in this case, the MP3 player 20 receives the information of the sensing unit 80. It operates in portable mode and controls the output volume itself.

5. LCD matching part (50)

The LCD matching unit 50 controls the LCD, which is a user matching device, and functions to match with a device for receiving a user input through a plurality of operation buttons.

6.USB matching part (60)

The USB matching unit 60 provides a path for downloading / uploading digital audio data from an external device (eg, a PC) and functions to supply power to the rechargeable battery of the power supply unit 70.

7. Power Supply Unit (70)

The power supply unit has a function of supplying various powers required for the system through an external rechargeable battery, and charges necessary power through an external USB matching unit 60, and the charging capacity can be used for 5 hours at 5V / 300mA.

The effect of the present invention can easily enjoy a large amount of digital audio data without deteriorating the sound quality of the digital audio data only with the present device without changing or adding existing analog sound equipment. In addition, the device of the present invention operates alone as an MP3 player, so it can be carried with you when you go out, so there is no need for a separate portable digital audio data player.

The present device uses the analog sound equipment installed in a home or a vehicle as it is for industrial use, so that it can prevent a huge loss to the country. Economically, it can be used because it can be used as an existing analog audio device and can be used as a portable digital audio alone.

If the device is put into practical use, it will emerge as a new innovation in the general portable MP3 player market due to various digital audio data.

Claims (4)

Cartridge matching unit matching with analog audio tape decoding device, MP3 decoder unit for reproducing digital audio data and controlling various operations, storage unit for storing audio data, earphone, microphone Audio matching unit, LCD display unit to match the input unit required for the operation and indicators showing the user information, system information, etc., charging function and power supply for supplying power required for the system, various A portable MP3 audio cartridge player device having a USB matching unit for downloading / uploading digital audio data and a sensor unit for detecting and informing the portable mode / cartridge mode of the device, Has a digital audio cartridge function that can accommodate digital audio data without alteration or other additions to existing analog sound equipment; It further includes a detection unit 80 for detecting the removal / mounting of the existing audio device device to have an automatic switching function in the portable mode and cartridge mode to control the flow of the analog signal output, When operating in the cartridge mode is provided with a power supply for accommodating a rechargeable battery inside the cartridge without an external power supply, When operating in the cartridge mode, it is possible to download / upload digital audio data even when the portable MP3 audio cartridge player is mounted on an existing analog car audio from an external digital audio data source (e.g. laptop). Portable MP3 audio cartridge player device characterized in that it comprises a USB matching unit (60) to enable charging even during operation when the power shortage occurs. The method of claim 1, wherein the digital audio cartridge function, By inserting the device directly into a cassette tape cartridge of existing analog audio equipment, car audio, etc., the detection unit enables digital audio data to be played like a cassette tape on an analog audio equipment without requiring any device change or additional matching device. The portable MP3 audio cartridge player device, characterized in that the digital audio reproducing unit 20 collects the mounting information from the 80 and controls the flow of the analog signal and inputs it to the existing analog audio device through the cartridge unit 10. . The method of claim 1, wherein the detection unit 80, When the device is directly mounted / unmounted on a cassette tape cartridge such as an analog audio device or a car audio, information that can determine the mode of the device can be transmitted to the digital audio reproducing unit 20 to reproduce during cartridge mode. It is possible to output the flow of the analog signal to the cartridge unit 10, and in the portable mode to output the flow of the reproduced analog signal to the acoustic matching unit 40 to the present invention device portable mode, cartridge mode Can be driven by In addition, it provides a fixed pitch function when operating in the cartridge mode to store the set pitch in the portable mode, and the user does not need to adjust the volume by using the preset fixed pitch. On the other hand, the portable MP3 audio cartridge player device, characterized in that configured to remove the inconvenience caused by the volume height by being restored to the previous stored pitch when switching to the portable mode. According to claim 1, The power supply unit 70 for receiving the rechargeable battery, When the power is supplied from the PC through the USB matching unit 60 or the power is supplied to the external power adapter, when the portable mode / cartridge mode is operated, the system can charge the power while the system is in operation to perform the player function. Portable MP3 audio cartridge player device, characterized in that configured so as not to interrupt the player.