Demand data distribution system
AssigneeRockwell Collins, Inc.
InventorDavid E. Eicher
Life of this patent
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Abstract
A demand data distribution system architecture applicable to data distribution systems and entertainment systems is disclosed. The demand distribution system architecture includes data sources and nodes for receiving data over a high-speed serial data bus such as IEEE 1394. The nodes receive data on demand from the data sources on channels assigned to the nodes. The demand data distribution system includes such fault tolerant features as a loop gate for looping around failed elements of the system.
Claims20
A demand data distribution multimedia entertainment system comprising:
- a plurality of program sources for providing audio/video data;
- a data bus connected to the plurality of program sources said data bus transferring command and control data in an asynchronous mode and transferring the audio/video data in an isochronous mode;
- and
- a plurality of nodes connected to the data bus for sending and receiving command and control data and audio/video data on the data bus said plurality of nodes comprising seat nodes having isochronous channels with channel identifications assigned to each of said seat nodes wherein one of said seat nodes is a root node and said root node is programmed as a bus manager node for controlling the data bus;
- wherein a first node of the plurality of nodes selects in the asynchronous mode a first program source of the plurality of program sources for transmission of the audio/video data on an isochronous channel assigned to the first node and when a second node of the plurality of nodes selects the first program source of the plurality of program sources said second node switches to the isochronous channel assigned to the first node.
A demand data distribution multimedia entertainment system comprising:
- a plurality of program sources for providing audio/video data;
- a data bus connected to the plurality of program sources said data bus transferring command and control data in an asynchronous mode and transferring the audio/video data in an isochronous mode;
- a plurality of nodes connected to the data bus for sending and receiving command and control data and audio/video data on the data bus said plurality of nodes comprising seat nodes having isochronous channels with channel identifications assigned to each of said seat nodes wherein one of said seat nodes is a root node and said root node is programmed as a bus manager node for controlling the data bus;
- and
- a loop gate node wherein said loop gate node is inserted in place of a leaf node of the plurality of nodes and said loop gate node further comprises a plurality of ports for closing a loop around a failed node.
A demand data distribution system comprising:
- a plurality of nodes said plurality of nodes comprising seat nodes;
- a data bus said data bus for interconnecting the nodes and further comprising a plurality of channels each of said seat nodes having an individually assigned channel for receiving data;
- a plurality of data sources for providing the data to the plurality of nodes over the plurality of channels each of said seat nodes selecting a one of said data sources to provide the data on the individually assigned channel;
- a bus manager node wherein said bus manager node is one of said seat nodes in the plurality of nodes for controlling the demand data distribution system;
- and
- a loop gate node in the plurality of nodes for looping around failed nodes.
Dependencies are inferred from the claim text.