| 摘要 |
PURPOSE: An interface for car audio control using a computer is provided to convert an output signal of a computer into a signal which a car audio is able to recognize, thereby controlling the car audio by using the computer. CONSTITUTION: A USB communication module(401) performs USB data communication through a USB port of a computer. A data matching unit(402) transmits data of the computer received from the USB communication module to a car audio signal codec unit(403). The car audio signal codec unit converts the data of the data matching unit into a signal which a car audio is able to recognize. When the computer turns off, a relay(404) blocks a car audio controlling signal. [Reference numerals] (401) USB communication module; (402) Data matching unit; (403) Car audio signal codec unit; (404) Relay; (AA) Computer; (BB) Car audio
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