KR200289255Y1 - Apparatus for up/down loading audio data and Cassette Decks Player including therefor - Google Patents

Abstract

The present invention relates to a device for uploading / downloading audio data and a cassette deck player including the same. In particular, the present invention receives and processes various signals indicative of an operation mode, and an operation and up / down corresponding to the received signal. A CPU controlling to instruct a loading operation; A USB interface unit connected to a USB port of a general computer and configured to interface a compressed file transmitted from the USB port according to a communication standard; A memory unit interconnected with the USB interface unit, storing a compressed file encoded from the USB interface unit and an audio file applied from the outside, and applying the compressed file to a designated path by a CPU extraction command; ; A decoder connected to the memory unit and configured to restore and analog convert a compressed file applied from the memory unit to original digital data; And an encoder for digitally converting an analog audio file applied from the outside and encoding and applying the converted digital audio file to the memory unit. Therefore, according to the present invention, an audio file having a desired MP3 file format can be downloaded to a cassette deck player, or an analog audio file played in a cassette deck player can be uploaded to a general computer.

Description

Apparatus for up / down loading audio data and Cassette Decks Player including therefor}

The present invention relates to a device for uploading / downloading audio data and a cassette deck player including the same. More particularly, a cassette deck player or a storage medium (for example, MP3 data) can be downloaded by downloading audio data stored in a general computer. Device for uploading / downloading audio data (including analog and digital audio data) from a cassette deck player or a storage medium to a general computer, and a cassette deck player including the same. It is about.

The portable cassette player, synonymous with portable audio equipment, has occupied a unique position for more than 20 years, but its competitiveness is gradually being lost due to the spread of portable CD players and MP3 players. However, the convenience of playing back cassette tapes, listening to radios, and recordings still maintains an advantage in purchase volume in portable audio equipment. However, from the standpoint of the portable cassette player, the advantages of the CD player and the MP3 player with high quality playback capability cannot be overlooked, and from the standpoint of the portable CD player and the MP3 player, the advantages of the convenient portable cassette player cannot be overlooked.

With this in mind, LG Electronics launched the new MP3 player, a new portable music player that combines an existing cassette player and FM radio with an MP3 player for the next generation of music enthusiasts. The appearance of the MP-Free is almost the same as a portable cassette player called the Walkman, except that there is a connector connecting the MP3 Play button and the data transmission / reception cable. For MP3 playback, use a flash memory card just like a traditional MP3 player. However, the MP-free was only a combination of a cassette player and an MP3 player. In addition, there was a problem that the price is relatively expensive.

In addition, Korean Patent Publication No. 2001-35368 implements a cassette tape playback / recording unit that can be attached and detached from a general computer, and plays a sound source recorded on a cassette tape in a general computer, or downloads a sound source downloaded through communication and CD-ROM. A cassette tape playback / recording apparatus and method of a general computer capable of recording on a cassette tape are proposed. However, this method has the advantage that the cassette tape can be played and recorded in a general computer, but it also adds a function of playing and recording a cassette tape by attaching a general cassette deck player to the computer. There are many limitations.

In addition, although the MP3 sound recording function is built into the cassette deck player sold by Samsung Electronics, etc., it is possible to connect MP3 files played by connecting the output terminal of the sound card installed in a general computer and the microphone line terminal of the cassette deck player. Is just a feature to record. Therefore, there is a problem that the sound quality is poor because it is to record the analog signal reproduced from the sound card.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to download audio data (for example, MP3 data) applied from a general computer through a USB port and to a storage medium ( For example, flash memory), decoded and analog-converted stored audio data to a cassette deck player, and compresses audio data (e.g., analog data) applied from a cassette deck player (i.e., encodes digital data) or The present invention provides an apparatus for uploading and downloading audio data that can be converted (ie, converted from analog data into digital data) and uploaded to a general computer.

Another object of the present invention is to implement an audio data upload / downloading device as a single chip and to embed it in a cassette deck player, so that audio data (ie, analog and digital data) can be easily exchanged with a general computer. The present invention provides a cassette deck player including a device for uploading and downloading audio data.

1 is a view showing the configuration of the audio data upload / download apparatus according to the present invention and the coupling relationship with the peripheral device,

2 is a flowchart illustrating a downloading process of a digital audio file using an up / downloading device according to the present invention;

3 is a flowchart illustrating an uploading process of an audio file using an up / downloading apparatus according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

100: up / down device 110: CPU

120: USB interface unit 130: memory unit

140: decoder 150: encoder

200: cassette deck player 210: CPU

220: analog block 230: recording block

In order to achieve the above object, the present invention downloads an audio file stored in a general computer as a transmission object, and uploads / downloads an audio data device for uploading an audio file stored in a transmission subject to a general computer. A CPU which receives and instructs various signals to be instructed, and controls to command an operation corresponding to the received signal and an up / download operation; A USB interface unit connected to a USB port of a general computer and configured to interface a compressed file transmitted from the USB port according to a communication standard; A memory unit interconnected with the USB interface unit, storing a compressed file encoded from the USB interface unit and an audio file applied from the outside, and applying the compressed file to a designated path by a CPU extraction command; ; A decoder connected to the memory unit and configured to restore and analog convert a compressed file applied from the memory unit to original digital data; And an encoder for digitally converting an analog audio file applied from the outside, encoding the converted digital audio file, and applying the encoded digital audio file to the memory unit.

In addition, the present invention is a first CPU for controlling the overall operation for the reproduction and recording of the analog audio file, an external block under the control of the analog block and the CPU for performing the overall operation for playing the analog audio file under the control of the first CPU A cassette deck player including a recording block for performing various operations for recording an analog audio file applied from a system, the cassette deck player comprising: receiving and calculating various signals indicative of an operation mode, and operating and uploading / processing corresponding to the received signals. A second CPU which controls to command a downloading operation; A USB interface unit connected to a USB port of a general computer and configured to interface a compressed file transmitted from the USB port according to a communication standard; A memory interconnected with the USB interface unit and storing a compressed file encoded from the USB interface unit and an audio file applied from the outside, and applying the compressed file to a designated path by an extraction command of the second CPU; Wealth; A decoder connected to the memory unit and configured to restore and analog-convert the compressed file applied from the memory unit to original digital data and to apply it to the recording block of the cassette deck player; And an encoder for digitally converting the analog audio file applied from the analog block of the cassette deck player, encoding the converted digital audio file, and applying the encoded digital audio file to the memory unit.

Hereinafter, a preferred embodiment of an apparatus for uploading / downloading audio data and a cassette deck player including the same according to the present invention will be described in detail with reference to the accompanying drawings.

The device for uploading / downloading audio data is a function of applying digital audio files of a general computer to a cassette deck player or a storage medium and storing the audio files stored in the cassette deck player or a storage medium to a general computer. Has built in. MP3 files are a representative example of digital audio files that can be stored in a general computer. MP3 files are a type of MPEG that is an audio and video compression standard. It is a type of audio file that can contain music of stereo quality equivalent to that of an audio CD. If the average compression rate is about 1MB per minute and 3 ~ 5 minutes of recording time is enough, about 3 ~ 5MB is enough, so many songs can be stored on one CD. However, audio files in the MP3 file format cannot be played back in general cassette deck players because they can be played only with a dedicated player (eg, an MP3 player). Therefore, we have implemented the uploading / downloading device of the present invention so that the MP3 file format audio file can be played on a general cassette deck player at low cost. After converting the digital audio file into a decoding and analog signal using the USB interface unit, In addition, analog signals that are recorded on cassette tapes or played back on standard cassette deck players can be digitally converted and encoded, and then applied to a standard computer for storage. Here, the cassette deck player includes a portable cassette player (e.g., walkman) and a general cassette deck player capable of playing and recording cassette tapes.

In addition, the digital audio file stored in the general computer may be stored in another media player (for example, an MP3 player or a CD player) or a storage medium, or the digital audio file stored in the other media player or a storage medium may be authorized and stored in the general computer. to be.

In addition, the up / downloading device may be implemented as a separate device and connected to a cassette deck player, or may be embedded in the cassette deck player.

1 is a view showing the configuration of the audio data uploading / uploading apparatus 100 according to the present invention and a coupling relationship with a peripheral device (eg, a general computer, a cassette deck player), the present uploading / downloading apparatus 100 The CPU 110, the USB interface unit 120, the memory unit 130, the decoder 140, and the encoder 150 are configured, and the decoder 140 includes a D / A converter 141. The encoder 150 includes an A / D converter 151. The uploading / downloading apparatus 100 may download MP3 files stored in a general computer and apply them to a cassette deck player or a storage medium, or upload audio files stored in the cassette deck player or a storage medium to a general computer. A typical computer contains a CPU, memory section and USB port for uploading and downloading MP3 files.

The CPU of a general computer runs a digital audio file playback and editing program (for example, 'MP3 Explorer') to transfer the MP3 file to be transmitted to the upload / downloading device 100 through the USB port or to the upload / downloading device 100. Controls to receive and store MP3 files applied from the USB port. In this case, in order to perform an operation such as uploading / downloading of an MP3 file, the installation CD provided by the provider of the uploading / downloading apparatus 100 is inserted into a drive of a general computer, and the software named 'MP3 Explorer' is installed. Should be. MP3 Explorer is a software that allows you to download, play and edit audio files in MP3 file format on a regular computer. The memory unit is interconnected with the CPU and stores a MP3 file to be transferred and a playback and editing program (for example, 'MP3 Explorer') for playing and recording the MP3 file, and according to the control signal of the CPU, The MP3 file to be recorded is applied to the CPU or the MP3 file is saved from the CPU. The USB port is interconnected with the CPU, and designates the address of the data transmitted from the CPU to transfer the MP3 file to the corresponding path (that is, the uploading / downloading device 100) or the MP3 file authorized from the uploading / downloading device. Serves to receive. The USB port provides an interface for interworking with multiple external devices and exchanges MP3 files between the CPU and the upload / download device.

The CPU 110 of the up / downloading device 100 controls the overall operation of the up / downloading device 100, receives a variety of signals applied from a key input unit (not shown) indicating an operation mode, and performs arithmetic processing. And control to command an operation corresponding to the received signal and an up / down operation.

The USB interface unit 120 is connected to a USB port of a general computer, and interfaces a compressed file such as an MP3 file transmitted from the USB port according to a communication standard, or stores the MP3 file stored in the memory unit 130 to be described later in the communication standard. It serves to interface properly. The USB interface is a next-generation PC peripheral specification agreed by Intel, Microsoft, Compaq, etc., and provides a data transfer speed of 12MB per second, and supports plug and play. The convenience of connecting directly without rebooting the PC has been greatly improved, and the printer cable can be left connected to a spare USB port. Like other interfaces, USB does not require a driver for installation and does not need to be configured by automatically detecting various I / O devices and peripherals. You don't even have to reboot your computer to change the settings of one peripheral, and you can connect or remove peripherals while the system is in use. USB consists of four wires, two of which are used to supply power and the other two are used to transfer data. The current supplied to the USB cable is about 0.5A. Connecting peripherals to USB is a daisy chain method that connects to each other with cables like SCSI. This is done by connecting a USB cable from a regular computer's USB port to a peripheral device, where the cable comes out and then to another peripheral device. In this way, up to 127 peripherals can be connected so that all the peripherals can be connected through a single cable.

The memory unit 130 is interconnected with the USB interface unit 120, and stores the MP3 file applied from the USB interface unit 120 and the MP3 file applied from the outside, and is corresponding to the extracted command of the CPU 110. It is responsible for authorizing MP3 files to the specified path. The memory unit of the present invention preferably uses a flash memory.

The decoder 140 is connected to the memory unit 130, and has a built-in buffer to delay the transmission speed and restore and convert the MP3 file applied from the memory unit 130 to the original voice data (ie, digital data). To the cassette deck player. In order to analog convert the decoded digital data, the decoder 140 includes a D / A converter 141. When playing an audio file compressed as an MP3 file, a device for decoding is required. In a general computer, a CPU is in charge of the job, but the main uploading / downloading device 100 is equipped with a separate dedicated decoder for convenience. However, it is a matter of course that the decoder function may be added to the CPU 110 of the up / downloading apparatus 100. Decompression requires a lot of resources, so you have to keep up to speed. Therefore, the operation speed can be matched by temporarily storing the decompressed digital data by embedding the operation delay buffer in the decoder 140. It is preferable to use a sigma-delta converter capable of realizing a high resolution of 16 bits or more for the D / A converter 141 for voice signal processing.

The encoder 150 is connected to the cassette deck player 200 (preferably, analog block 220), and it is easy to digitally convert the analog data applied from the cassette deck player 200 and to transmit the converted digital data. Compresses the MP3 file to the memory unit 130. In order to digitally convert analog data, the encoder 150 includes an A / D converter 151.

The cassette deck player 200 is a CPU 210 for controlling various operations for playing and recording an analog audio file, and an analog block 220 for performing various operations for playing a corresponding audio file under the control of the CPU 210. And a recording block 230 that performs various operations for recording an audio file applied from the up / downloading apparatus 200 under the control of the CPU 210. In addition, the CPU 210 may be implemented so as to perform an encoding monitor output function of playing and listening to the corresponding audio file even during recording.

The CPU 110, the USB interface unit 120, the memory unit 130, the decoder 140, and the encoder 150 may be implemented as a single chip, and the present uploading / downloading device is incorporated in a cassette deck player. Of course it can be implemented.

Hereinafter, an operation relationship of an audio data upload / downloading apparatus and a cassette deck player including the same according to the present invention will be described in more detail with reference to the accompanying drawings.

2 is a flowchart illustrating a downloading process of a digital audio file using an up / downloading apparatus according to the present invention.

First, a person who wishes to store an MP3 file format audio file in a cassette deck player or a storage medium (hereinafter referred to as a 'user') sets an optimal environment of a general computer for downloading (S210). For example, install a software (ie, 'MP3 Explorer') that can download, play and edit audio files in MP3 file format on a regular computer, and connect a cable to download the desired file. To download MP3 files, connect this uploading / downloading device to a USB port on a regular computer. When the main body upload / downloading device and the cassette deck player are separated, the main cassette player and the main upload / downloading device to be downloaded are connected through a designated port. In general, cassette deck players can't count time while recording, so you'll need to pick a song and calculate the estimated time before recording. For this reason, you need a function that tells the total playing time of the selected song on a regular computer. To record with the sync function, you need to keep silence between songs, and use a program that also provides this function. In the present invention, it is preferable to insert the installation CD provided by the uploading / downloading device provider into the drive of a general computer and install software called 'MP3 Explorer'.

The user executes the above-described program, selects a digital audio file (for example, an MP3 file) to be transmitted from among digital audio files stored in his computer (S220), and downloads the corresponding file (S230). MP3 files downloaded from a normal computer are applied to the USB interface of the uploading / downloading device through the USB port. At this time, the CPU instructs the USB interface unit to control the MP3 file to be interfaced to meet the communication standard and stored in the memory unit (eg, flash memory) (S240).

Next, the CPU controls the MP3 file stored in the memory unit to be applied to the decoder, and the decoder decodes the MP3 file and converts the decoded file into an analog signal recordable by the cassette deck player (S250). Since MP3 files stored in the memory are compressed files, they must be restored to the original digital files before they are compressed for downloading. Here, the decoder temporarily stores the decompressed audio file using the built-in operation delay buffer to match the operation speed and then perform analog conversion.

The analog-converted audio file is recorded on the cassette tape through the recording block of the cassette deck player (S260). Here, the CPU of the cassette deck player may perform an encoding monitor output function to control the audio file to be played and listened to even during recording.

3 is a flowchart illustrating an uploading process of an audio file using an up / downloading apparatus according to the present invention.

First, a person (hereinafter, referred to as a "user") who wants to store an analog audio file played in a cassette deck player sets an optimal environment of a general computer for uploading (S310). For example, install a software (ie 'MP3 Explorer') that can upload, play and edit audio files in MP3 file format on a regular computer, and connect a cable to upload the desired file. To upload MP3 files, connect this upload / download device to a USB port on a regular computer. When the main body upload / downloading device and the cassette deck player are separated, the main cassette player and the main upload / downloading device to be downloaded are connected through a designated port. In the present invention, it is preferable to insert the installation CD provided by the uploading / downloading device provider into the drive of a general computer and install the software called 'MP3 Explorer'.

The user of the cassette deck player CPU plays the analog audio file to be uploaded through the analog block, and transmits the reproduced analog audio file to the encoder of the up / downloading device (S320). The encoder encodes an analog audio file applied from a cassette deck player into a compressed file (eg, an MP3 file) that is easy to digitally convert and transfer. The CPU controls the encoded compressed file to be stored in the memory unit (S340), and the stored compressed file is interfaced to meet the communication standard and controlled to be transmitted to the general computer through the USB port (S350).

The above descriptions are merely illustrative of one embodiment, and the present invention is not limited to the above-described embodiments, and various modifications can be made within the appended utility model registration claims. For example, the shape and structure of each component specifically shown in the embodiment of the present invention may be modified.

As described above, according to the device for uploading / downloading audio data according to the present invention and a cassette deck player including the same, a cassette deck player or a storage medium having a low-cost interface chip capable of communicating with a general computer incorporating digital audio files is provided. By connecting to and embedding the audio file in the desired MP3 file format, the cassette deck player can be downloaded or an analog audio file played on the cassette deck player can be uploaded to a general computer.

Claims (3)

An apparatus for uploading / downloading audio data for downloading an audio file stored in a general computer into a transmission object and uploading an audio file stored in a transmission subject to the general computer. A CPU configured to receive and process various signals indicative of an operation mode, and to control an operation corresponding to the received signal and to command an upload / download operation; A USB interface unit connected to a USB port of a general computer and interfacing a compressed file transmitted from the USB port according to a communication standard; A compressed file encoded with the compressed file applied from the USB interface unit and an audio file applied from the outside, interconnected with the USB interface unit, and stored in the designated path by the extracting command of the CPU; A memory unit to be applied; A decoder connected to the memory unit for restoring and analog-converting the compressed file applied from the memory unit to original digital data; And And an encoder for digitally converting an analog audio file applied from the outside and encoding and applying the converted digital audio file to the memory unit. A first CPU for controlling overall operations for reproduction and recording of an analog audio file, an analog block for performing overall operations for reproducing an analog audio file under control of the first CPU, and externally applied under the control of the CPU A cassette deck player comprising a recording block for performing various operations for recording an analog audio file, A second CPU that receives and processes various signals indicative of an operation mode, and controls to command an operation corresponding to the received signal and an up / download operation; A USB interface unit connected to a USB port of a general computer and interfacing a compressed file transmitted from the USB port according to a communication standard; A compressed file encoded with the compressed file applied from the USB interface unit and an externally applied audio file, interconnected with the USB interface unit, and designated by the extracting command of the second CPU; A memory unit for applying to a path; A decoder connected to the memory unit, the decoder restoring and analog converting the compressed file applied from the memory unit to original digital data and applying the same to a recording block of the cassette deck player; And And an encoder for digitally converting the analog audio file applied from the analog block of the cassette deck player, and encoding and applying the converted digital audio file to the memory unit. Deck player. 3. The apparatus of claim 2, wherein the first CPU includes an encoding monitor output function for playing the analog audio file during recording of the analog audio file, And the first CPU and the second CPU perform CPU-to-CPU communication.