Redundant media packet streams
First Claim
1. A transmitter device for transmitting media packet streams on a data network to a receiver device, the transmitter device comprising:
- a transmitter comprising one or more data interfaces to transmit a first media packet stream and a second media packet stream to the receiver device, the media streams containing one or more media channels;
a processor to packetize the one or more media channels, based on a request from the receiver device, to create media packet streams for transmission from the data interfaces; and
a controller to cause the processor to create two independent media packet streams to be transmitted to the receiver device, wherein one of the two independent media packet streams contains data corresponding to the packetized one or more media channels and the other of the two independent media packet streams contains a copy of the data corresponding to the packetized one or more media channels;
wherein the packets in the two independent media streams include identifying information for causing data from corresponding packets from the two independent media streams to be written to the same buffer location.
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Accused Products
Abstract
This invention concerns the transmitting and receiving of digital media packets, such as audio and video channels and lighting instructions. In particular, the invention concerns the transmitting and receiving of redundant media packet streams. Samples are extracted from a first and second media packet stream. The extracted samples are written to a buffer based on the output time of each sample. Extracted samples having the same output time are written to the same location in the buffer. Both media packet streams are simply processed all the way to the buffer without any particular knowledge that one of the packet streams is actually redundant. This simplifies the management of the redundant packet streams, such as eliminating the need for a “fail-over” switch and the concept of an “active stream”, The location is the storage space allocated to store one sample. The extracted sample written to the location may be written over another extracted sample from a different packet stream previously written to the location. These extracted samples written to the same location may be identical.
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Citations
12 Claims
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1. A transmitter device for transmitting media packet streams on a data network to a receiver device, the transmitter device comprising:
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a transmitter comprising one or more data interfaces to transmit a first media packet stream and a second media packet stream to the receiver device, the media streams containing one or more media channels; a processor to packetize the one or more media channels, based on a request from the receiver device, to create media packet streams for transmission from the data interfaces; and a controller to cause the processor to create two independent media packet streams to be transmitted to the receiver device, wherein one of the two independent media packet streams contains data corresponding to the packetized one or more media channels and the other of the two independent media packet streams contains a copy of the data corresponding to the packetized one or more media channels; wherein the packets in the two independent media streams include identifying information for causing data from corresponding packets from the two independent media streams to be written to the same buffer location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for transmitting media packet streams on a data network to a receiver device, the method comprising the steps of:
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packetizing one or more media channels; creating a first media packet stream and a second media packet stream containing one or more channels; transmitting the first media packet stream to the receiver device; and transmitting the second media packet stream to the receiver device, wherein the first and the second media packet streams are independent and contain the same media channels; wherein the first media packet stream contains data corresponding to the one or more channels and the second media packet stream contains a copy of the data corresponding to the one or more media channels; and wherein the packets in the two independent media streams include identifying information for causing data from corresponding packets from the two independent media streams to be written to the same buffer location. - View Dependent Claims (11, 12)
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Specification