Method and apparatus for storing MIDI information in subcode packs
AssigneeWNM Ventures Inc.
InventorsWalter R. Klappert, Alan J. McPherson
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Abstract
The present invention is an apparatus and method for ecoding data in MIDI (Musical Instrument Digital Interface) format on an audio compact disc without affecting the digitized sound stored in the main channel by utilizing what is known as the subcode channel of the compact disc which is reserved for information other than digitized compact disc audio data. The invention is directed to a technique for converting MIDI information generated by a MIDI source (for example, a keyboard or sequencer) into subcode data which may be recorded on a transportable floppy diskettes or other transportable media for subsequent conversion to signals which are input to a compact disc encoder which places the MIDI information into the subcode channel.
Claims23
A system for storing MIDI information in subcode packs for encoding on a compact disc having a main channel and a subcode channel comprising:
- (a) a computer having a random access memory, a processor and coupled to a storage device;
- (b) MIDI source means for generating MIDI signals;
- (c) first interface means coupled to said MIDI source means and said computer for converting the MIDI signals to a form for loading into said memory for access by said processor;
- (d) program means for controlling the operation of said processor and said memory so as to convert the MIDI data in said memory to a plurality of subcode packs and writing said subcode packs to a storage medium on said storage device;
- (e) second interface means for retrieving said subcode packs on said storage medium and for coupling to a compact disc encoder for converting the MIDI data in the retrieved subcode packs to electric signals useable by the compact disc encoder to encode said MIDI data in the subcode channel on the compact disc.
A method for storing MIDI information in subcode packs for encoding on a compact disc having a main channel and a subcode channel using a computer having a random access memory, a processor and coupled to a storage device, said method comprising the steps of:
- (a) generating MIDI signals from a MIDI source;
- (b) converting the MIDI signals to a form for loading into said memory for access by said processor;
- (c) controlling the operation of said processor and said memory so as to convert the MIDI data in said memory to a plurality of subcode packs and writing said subcode packs to a storage medium on said storage device;
- (d) retrieving said subcode packs on said storage medium and converting the MIDI data in the retrieved subcode packs to electric signals for encoding said MIDI data in the subcode channel on the compact disc.
Dependencies are inferred from the claim text.