KR20000012313A - The function of transmission of fm of portable audio player - Google Patents

Abstract

PURPOSE: A frequency modulation(FM) delivery function is provided to transmit an audio data of a portable audio appliance to FM receiving apparatus to gain a higher outside output than the portable audio appliance. CONSTITUTION: The FM delivery function is comprises a function selection section(3) receiving a signal from a key pad section(3-1) to a main processor(1), a storage section(2) recording an audio data, a main processor(1) controlling overall appliance to operate smoothly, an audio output section(5) transforming and amplifying a music data received from the main processor(1) to analogue signal, a FM transmission section(4) converting the music data to FM signal and delivering the FM signal to an antenna, a FM receiving section(7) converting the FM signal to an audio signal and outputting to a speaker through an AMP, and a display section(6) displaying a set state to users through a display window.

Description

FM transmission function of portable audio device {THF FUNCTION OF TRANSMISSION OF FM OF PORTABLE AUDIO PLAYER}

The present invention is a portable audio device having an FM transmission function, the conventional technology is connected to a wire for external output. In addition, a separate device was needed to use the car audio amplifier.

In order to solve the above-mentioned problems, the present invention provides an FM transmission function to the portable audio device, thereby transmitting audio data of the portable audio device to the FM receiver, thereby obtaining a higher external output than the portable audio device.

1-Basic circuit diagram according to the present invention

When described in detail with the accompanying drawings as follows.

FIG. 1 is a block diagram of a portable audio device having an FM transmission function and an FM receiver. The function selection unit 3, the keypad unit 3-1, the storage unit 2, and the screen output unit 6 are shown in FIG. ), The main processor 1, the audio output unit 5, the earphone 5-1, the FM transmitter 4, the FM receiver 7, an amplifier, and a speaker.

The function selector 3 analyzes the signal received from the keypad 3-1 and gives the main processor 1 a task to process.

The storage unit 2 performs a function of storing audio data (digital or analog signal).

The main processor 1 performs the work of controlling the entire apparatus and manages each function unit to perform the work smoothly.

The audio output unit 5 converts and amplifies the music data received from the main processor 1 into an analog signal and delivers the same to the earphone.

The FM transmitter 4 converts the signal received from the main processor 1 into FM (Frequency Modulation) and transmits the signal to the antenna.

The FM receiver 7 receives a signal transmitted from the FM transmitter, converts the signal into an audio signal, and outputs the amplifier to the speaker.

The screen output unit 6 serves to show the user the current state of the device through the display window.

When described in detail with reference to the accompanying drawings an embodiment of the present invention configured as described as follows.

1 is a system configuration diagram of a portable audio device proposed in the present invention.

The function selection unit 3 selects the FM transmission mode, and the main processor 1 takes the audio file or the audio signal from the storage unit 2 and sends it to the FM transmission unit 4.

The FM transmitter 4 modulates the audio signal received from the main processor into an FM signal and transmits the same through an antenna.

The FM receiver 7 receives the transmitted signal, converts the signal into an audio signal, and outputs the signal through the amplifier to the speaker.

The present invention can effectively utilize the advantages of portable audio and the advantages of large audio products as the FM transmission function of the portable audio device.

First, it can overcome the limited output limit of the existing portable audio device, not only overcome the spatial limitations of the external output using the wire, but also effectively solve the complicated wiring of the audio line caused by the wire.

By using an FM receiver without the addition of a separate external output device, no additional cost is incurred, and it can be effectively used for audio without a separate external input device such as a car audio.

Claims (3)

Fixed or removable memory for first storing uncompressed digital audio data (CD, WAV, RIFF, etc.) in a portable device for the purpose of storing audio data and transmitting it in an FM modulation scheme; Portable audio player composite apparatus for reading and transmitting digital audio data stored in the memory to FM To store audio data and transmit this data by FM modulation method, digital audio data, which is compressed in MP3 (MPEG-1 Layer3) or AAC (MPEG-2 Advanced Audio Coding), is first stored in a portable device. A portable audio player composite device with a fixed or removable memory for adding a digital audio data stored in the memory, and secondly, an MP3 or AAC decoder that reads and converts the digital audio data into a pre-compressed audio signal. A portable audio player complex that stores or reads audio data and transmits it to the FM by using an analog storage medium (TAPE, etc.) in a portable device for the purpose of storing audio data and transmitting the data by FM modulation. Device