MIDI address converter and router

Details MIDI address converter and router MIDI address converter and router

1987-03-10

1988-10-18

Salce, Patrick R.

Music

Instruments

84 116, G10H 100

Patent

active

047778571

ABSTRACT:
Described is a digital electronic device which selectively intercepts and reroutes the serial data being transmitted between digital music instruments interacting via the MIDI signal standard. Simultaneously, the device performs either transposition or control increment operations by incrementing (or decrementing) only those data bytes which are MIDI addresses of either musical keys or selected controls, (e.g., controls pertaining to volume, pitch bend, tremolo, tone duration, and the like) respectively. The device when equipped with logic gates can operate even faster than a microprocessor-based device performing the same functions, and no programming is required. In fact, a preferred device of the invention built with logic gates and other components available now is capable of operating at 250 kilobaud which is 8 times as fast as the present MIDI baud rate.

REFERENCES:
patent: 4176573 (1979-12-01), Drutsch
patent: 4527456 (1985-07-01), Perkins et al.
patent: 4566362 (1986-01-01), Kikumoto
patent: 4681008 (1987-07-01), Morikawa et al.

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