Music – Instruments – Electrical musical tone generation
Reexamination Certificate
2005-09-13
2010-06-08
Fletcher, Marlon T (Department: 2832)
Music
Instruments
Electrical musical tone generation
C084S609000, C084S634000, C084S649000, C084S650000, C084S666000, C084S47700R
Reexamination Certificate
active
07732699
ABSTRACT:
A central processing unit (CPU) for an MP3 player and a karaoke system makes it possible to reduce the size of the MP3 and the karaoke system by integrally building various kinds of storage units in a DSP and an RISC processor for executing control commands and generating control signals. The CPU100includes a display device160; a microphone140; a loudspeaker170; a data storage unit130for storing real-time recorded data inputted through the microphone and wave sample data for synthesizing sounds of musical instruments, and also storing a background image, a caption, and font data, which are visually and aurally provided to the user; a main storage unit120for sharing the sample data of the data storage unit130; an RISC processor102for storing sound sources, which output information corresponding to sound pitches and volumes of musical instruments, in the form of a MIDI file; a DSP101for synthesizing the data outputted from the main storage unit and the RISC processor to provide the music desired by the user; a codec HO for converting an output of the DSP; and an USB input/output terminal103for connecting the CPU to external devices.
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Fletcher Marlon T
Park John K.
Park Law Firm
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