System using standard ethernet frame format for communicating MIDI information over an ethernet network

• US 5,983,280 A
• Filed: 03/29/1996
• Issued: 11/09/1999
• Est. Priority Date: 03/29/1996
• Status: Expired due to Term

• Current Assignee: Production Resource Group LLC
• Original Assignee: Light and Sound Design Limited
• Inventors: Hunt, Mark A.
• Primary Examiner(s): Luu, Le Hien
• Application Number:
  US08/626,257
• Time in Patent Office: 1,320 Days
• Field of Search: 348/15, 709/236, 709/230
• US Class Current: 709/236
• CPC Class Codes: G06F 13/387 for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters for incompatible systems, open system

Abstract

A technique of allowing MIDI format information to be transmitted over an Ethernet connection. The MIDI is changed to Ethernet, and an Ethernet broadcast or multicast address is used. This allows the Ethernet to be delivered to multiple locations, much like the original MIDI information. Using the multicast address allows non-MIDI devices to be present on the same bus without interference from the MIDI commands.

Claims

1. A system for allowing MIDI format information communications over a network port, comprising:

first, second, and third MIDI communicating devices, each of said devices producing MIDI format information;

an Ethernet network connection, communicating using standard Ethernet protocol, and connects at least to said first, second, and third MIDI communicating devices; and

an interface assembly operates to transmit said MIDI format information to all of said first, second, and third MIDI communicating devices over said Ethernet network connection in a standard Ethernet frame format.

2. A system as in claim 1, wherein said network connection is Ethernet, and said interface assembly modifies said MIDI format information to form an Ethernet broadcast command.

3. A system as in claim 1, wherein said network connection is Ethernet, and said interface assembly modifies said MIDI format information to form an Ethernet multicast command.

4. A system as in claim 1, wherein said network connection is Firewire.

5. A system as in claim 1 wherein said network connection is Ethernet, using an Ethernet-type field $880E.

6. A system for allowing MIDI format communications over a network comprising:

first and second MIDI communicating devices, each of said devices producing MIDI format information;

a third, non MIDI communicating device, said third device producing non-MIDI format information;

an interface assembly, which modifies said MIDI format information to a standard Ethernet frame format information to form one of an Ethernet broadcast command or an Ethernet multicast command; and

an Ethernet network connects at least to said first, second, and third devices for transmitting said standard Ethernet frame format information.

7. A system as in claim 6 wherein said Ethernet uses an Ethernet-type field $880E.

8. An Ethernet system which operates to simulate for allowing MIDI format information communications over a network port, comprising:

first, second, and third MIDI communicating devices, each of said devices producing MIDI format information;

an interface assembly, associated with each of said first, second, and third MIDI communicating devices, which modifies said MIDI format information to form an Ethernet frame format message which is transmitted to and received and decoded by multiple Ethernet receiving stations so that each of said multiple Ethernet receiving stations interprets said MIDI format information; and

an Ethernet network, having multiple wire lines, connecting together said interface assemblies associated with all of said first, second and third MIDI communicating devices, whereby said Ethernet frame format message is transmitted on said Ethernet network.

9. A method of transmitting MIDI data over a bidirectional network connection, comprising:

connecting at least first, second, and third MIDI communicating devices, which communicate using MIDI data format, said connecting using an Ethernet connection connects at least to said first, second and third MIDI communicating devices;

producing MIDI information from said MIDI communicating devices; and

modifying said MIDI informaiton to standard Ethernet broadcast frame format information and transmitting said standard Ethernet broadcast frame format information to multiple locations, including at least all of said first, second, and third MIDI communicating devices at all times, and said modifying comprises commanding standard Ethernet broadcast message to deliver said standard Ethernet broadcast frame format information to multiple locations.