Multiplexing system for digital signals formatted on different standards, method used therein, demultiplexing system, method used therein computer programs for the methods and information storage media for storing the computer programs
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United States of America Patent
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Apr 11, 2006
Grant Date -
Oct 23, 2003
app pub date -
Apr 21, 2003
filing date -
Apr 23, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A user is fingering a piece of music on an electronic piano in ensemble with the playback of a piece of music recorded in a compact disc; while the user is playing the piece of music, the electronic piano generates MIDI music data codes representative of the fingering, and the MIDI data bits and the audio data codes, which are transmitted from the compact disc player, are multiplexed into a digital composite music data signal; the digital composite music data signal is transmitted through a single digital audio cable to a tone generator module or stored in a memory, and the tone generator module demultiplexes or extracts the MIDI music data codes from the digital composite music data signal; thus, the multiplexing and demultiplexing make the data transmission and recording simple.
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