MP3 car player
AssigneeIDS Co., Ltd.
InventorSang-Hun Lee
Life of this patent
Estimating the term…
Abstract
Disclosed is a MP3 car player which prevents a compact disk (CD) player equipped in a car from discontinuing playing of a CD as a result of bumpy road conditions, etc., is able to use both conventional CDs and MP3 CD-ROMs, and compresses and decompresses audio data at a high compression ratio to enable the recording of 150˜200 songs in a single CD-ROM without the loss of sound quality, thereby making use of the expensive CD changer unnecessary. The present invention comprises a file type detector, an MP3 file input unit, a peripheral interface unit, a controller unit, an MP3 decoder, and a digital/analog converter.
Claims5
An MP3 car player, comprising:
- a display unit displaying information of replaying audio data;
- a keypad controlling drives of compact disks (CDs) and compact disk read only memories (CD-ROMs);
- a speaker unit outputting the audio data in a format audible to the human ear;
- a file type detector reading source data of the CDs and CD-ROMs and determining whether the file of the data is an ordinary audio CD file or an MP3 audio file;
- an MP3 file input unit receiving the MP audio file detected from the file type detector, and detecting errors and temporarily storing the data in a first memory;
- an MP3 decoder receiving the MP3 data from the MP3 file input unit and restoring compressed data by use of a Huffman decoding method, and converting the data into pulse code modulation data;
- a controller unit reading the data stored in the MP3 file input unit, controlling the display unit and the keypad, and writing data to the MP3 decoder;
- a peripheral interface unit controlling the control signals between the display unit, the keypad, and the controller unit;
- and
- a digital/analog converter receiving ordinary audio CD data from the file type detector or receiving pulse code modulation digital data from the MP3 decoder and converting the data into analog data and outputting the data to the speaker unit.
Dependencies are inferred from the claim text.