Audio related system communication protocol

• US 8,249,071 B2
• Filed: 03/25/2005
• Issued: 08/21/2012
• Est. Priority Date: 03/26/2004
• Status: Active Grant

• Current Assignee: Harman International Industries Incorporated (Samsung Electronics Co. Ltd.)
• Original Assignee: Harman International Industries Incorporated (Samsung Electronics Co. Ltd.)
• Inventors: Kreifeldt, Richard Allen, Lee, John, Plunkett, William A., Shuttleworth, Timothy J., Stevenson, Andrew, Werf, Bruce Vander, Zollinger, Howard Scott
• Primary Examiner(s): ROBERTS, BRIAN S
• Application Number:
  US11/089,889
• Publication Number:
  US 20050246041A1
• Time in Patent Office: 2,706 Days
• Field of Search: None
• US Class Current: 370/392
• CPC Class Codes: H04H 60/04 Studio equipment; Interconnection of studios
• CPC Class Codes: H04L 67/125 involving control of end-device applications over a network
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04R 2227/003 Digital PA systems using, e.g. LAN or internet
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F

Abstract

A system for management and control of audio related equipment. The system provides an architecture to manage, monitor, and control all of the audio related equipment in an audio system. A communication protocol used within the system allows standardized communication between the performance equipment mangers and the audio related devices, as well as device-to-device communication. The protocol allows users to add audio related devices to an audio system without performing a setup to configure communication between the devices.

Claims

1. A device operable to interact with an audio-related device, the device comprising:

a processor;

a performance equipment manager stored in a memory of the device, the performance equipment manager executable with the processor to communicate with the audio-related device via a network interface over an audio network operable with a plurality of network layer protocols;

the performance equipment manager configured to generate a message to the audio-related device, the message including a percentage due to a datatype of a state variable included in the audio related device being unknown by the performance equipment manager, the message configured to instruct the audio-related device to change a value of the state variable by the percentage included in the message, the message having a network address specific to one of the network layer protocols and compatible with the network interface, the message also having a common packet structure, the common packet structure being network layer protocol independent and comprising;

a version component representing a type of protocol of the message;

a length component representing a number of bits included in the common packet structure;

a source node ID component representing a unique, network layer protocol independent identification of the audio-related device;

a destination node ID component representing a unique, network layer protocol independent identification of the audio-related device;

a message ID component representing a type of instruction included in the common packet structure;

a flag component representing a characteristic associated with the common packet structure;

a count component representing a hop count for the common packet structure; and

a message component representing an application layer message to the audio-related device.

2. The device of claim 1, where, the length component comprises a header length and a message length of the common packet structure, the header length determined by sum of the number of bits associated with the version component, the length component, the source address component, the destination address component, the message ID component, the flag component, and the count component.

3. The device of claim 2, where the message length represents the number of bits associated with the message component.

4. The device of claim 1, where the source node ID component includes a region representing a virtual device associated with the device, the virtual device being part of an audio node structure representative of functionality included in the device.

5. The device of claim 4, where the source node ID component includes a region representing an object included in the virtual device.

6. The device of claim 5, where the virtual device is a first virtual device, the audio node structure is a first audio node structure and where the destination node ID component includes a region representing a second virtual device associated with the audio-related device, the second virtual device being part of a second audio node structure representative of functionality included in the audio-related device.

7. The device of claim 6, where the object is a first object, and where the destination node ID component includes a region representing a second object included in the second virtual device.

8. The device of claim 1, where the flag component is configured to provide an acknowledgment by the device that an action requested by the audio-related device has been completed.

9. The device of claim 1, where the flag component is configured to provide a request by the device for an acknowledgement when an action requested with the application layer message has been completed by the audio-related device.

10. The device of claim 1, where the flag component is configured to provide a response to a request received from the audio-related device.

11. The device of claim 1, further comprising a sequence number component operable to count each time a message is passed between the device and the audio-related device.

12. The device of claim 1, where the application layer message is an instruction from the device to the audio-related device to transmit changes in a changeable parameter included in the audio-related device to the device.

13. A method of interacting with an audio-related device operable in an audio system, the method comprising:

providing a first audio-related device having a memory and a graphical user interface;

executing a performance equipment manager stored in the memory of the first audio-related device;

displaying a control panel view on the graphical user interface with the performance equipment manager, the control panel view representative of functionality of a second audio-related device;

receiving entry of a change of a value displayed in the control panel view, the value resident in the second audio-related device;

transforming the control panel view to reflect the change of the displayed value;

generating a message instructing the second audio-related device to change the value resident in the second audio-related device by a predetermined percentage of the value, the message generated for transmission via a network interface included in the performance equipment manager, the message generated for transmission over an audio network operable with a plurality of network layer protocols;

addressing the message with a network layer address specific to one of the network layer protocols and compatible with the network interface;

configuring the message in a common packet structure; and

receiving a confirmation message from the second audio-related device indicating that the value resident in the second audio-related device is changed;

where the common packet structure is network layer protocol independent and comprises;

a source node identification component including a first unique node identifier associated with the first audio-related device, the first unique node identifier being an independent identification of the first audio-related device that is independent of the network layer address and the network interface; and

a destination node identification component including a second unique node identifier associated with the second audio-related device, the second unique node identifier being a network layer protocol independent and network interface independent identification of the second audio-related device.

14. The method of claim 13, where the confirmation message is configured in the common packet structure.

15. The method of claim 13, where the message is a first message, the method further comprising receiving a second message from the second audio-related device, the second message configured in the common packet structure and comprising an instruction to change the value displayed in the control panel view.

16. The method of claim 15, where the instruction to change the value displayed in the control panel view is in the form of an instruction to change the value by the predetermined percentage of the value.

17. The method of claim 13, where the source node identification component further comprises identification of a first virtual device included in the first audio-related device, and identification of a first object included in the first virtual device, the first virtual device and the first object representative of at least a portion of a first audio node structure of the first audio-related device.

18. The method of claim 17, where the destination node identification component further comprises identification of a second virtual device included in the second audio-related device, and identification of a second object included in the second virtual device, the second virtual device and the second object representative of at least a portion of a second audio node structure of the second audio-related device.

19. An audio-related device comprising:

a memory configured to store settings of the audio-related device;

a user interface configured to change the settings stored in memory;

a communication port configured to transmit and receive messages over a network operable with a plurality of network layer protocols;

a processor operatively coupled to the memory, the user interface, and the communication port;

a communication manager stored in the memory and executable with the processor, the communication manager configured to generate a message having a network address specific to one of the network layer protocols, the message comprising a common packet structure that is independent of the network layer protocols, the common packet structure including;

a length component representing a number of bits included in the common packet structure;

a source node ID component representing a unique, network layer protocol independent identification of the audio-related device;

a destination node ID component representing a unique, network layer protocol independent identification of a destination audio-related device to which the message is directed;

a message ID component representing a descriptor of a type of instructions associated with the message;

a flag component representing a characteristic associated with the message;

a count component representing a hop count for the common packet structure; and

a message component representing an application layer message to be processed by the destination audio-related device;

where a datatype of a state variable included in the destination audio-related device is unknown by the audio-related device, and the message component includes a message and a percentage value, the message configured to instruct the destination audio-related device to change a value of the state variable to correspond to the percentage value included in the message.

20. The audio-related device of claim 19, where the flag component represents an acknowledgment to the destination audio-related device with which the audio-related device is communicating that an action has been completed.

21. The audio-related device of claim 19, where the flag component represents a request for an acknowledgement when an action responsive to the application layer message has been completed by the destination audio-related device to which the message is directed.

22. The audio-related device of claim 21, where the memory includes a queue of messages generated by the communications manager, the communication port is configured to sequentially transmit messages in the queue in response to receipt of the acknowledgement.

23. The audio-relate device of claim 22, where the messages in the queue include instructions that are dependent upon completion of other instructions in the queue.

24. The audio-related device of claim 19, where the flag component represents a response to a request.