Music system of transmitting performance information with state

Details Music system of transmitting performance information with state Music system of transmitting performance information with state

1998-06-22

1999-11-02

Witkowski, Stanely J.

Music

Instruments

Electrical musical tone generation

84617, 84645, 84649, 84655, G10H 118, G10H 700

Patent

active

059774681

ABSTRACT:
A music system is constructed by a transmitter for transmitting performance information and a receiver for receiving the performance information so as to reproduce music performance. In the transmitter, a first packet encoder packetizes the performance information so as to sequentially form a primary packet of the performance information. A second packet encoder packetizes state information so as to form a secondary packet of the state information in correspondence with the primary packet. The state information indicates a proper operation state of a channel defined by the protocol of Musical Instrument Digital Interface. A packet multiplexer transmits the primary packet together with the secondary packet by multiplexing so as to ensure proper reproduction of the music performance by means of a channel provided in the receiver. In the receiver, a packet demultiplexer separates the primary packet and the secondary packet from each other. A first packet decoder has the channel of the Musical Instrument Digital Interface and responds to the separated primary packet for updating an current operation state of the channel so as to reproduce the music performance. A second packet decoder compares the updated current operation state with the proper operation state indicated by the separated secondary packet, and operates if the updated current operation state is different than the proper operation state for rewriting the current operation state according to the state information so as to properly reproduce the music performance according to the performance information.

REFERENCES:
patent: 5357048 (1994-10-01), Sgroi
patent: 5361673 (1994-11-01), Kira et al.
patent: 5644097 (1997-07-01), Shimada
patent: 5744740 (1998-04-01), Mizuno
patent: 5753844 (1998-05-01), Matsumoto
patent: 5763805 (1998-06-01), Yamabata et al.

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