SYSTEM, METHOD AND COMPUTER READABLE MEDIUM FOR PROVIDING REDUNDANCY IN A MEDIA DELIVERY SYSTEM
First Claim
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1. A system, comprising:
- a plurality of primary devices; and
upon detection of failure of at least one of said primary devices, the remainder of said plurality of primary devices perform at least one function of the failed primary device, the function balanced by and between the remainder of said plurality of primary devices, wherein the remainder of said plurality of primary devices are recognized by the system as at least ones not designated as spare devices.
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Abstract
In a digital video system, high availability distribution is provided using spare modules such as an integrated receiver decoder, multimedia transcoder and streaming module in support of the primary modules. The primary modules multicast status messages which are monitored by the spare modules. When failure of a primary module is detected, the spare module takes over the role of the failed module, for example by joining the same multicast groups as the failed module and taking over processing of the streams of the failed module. Multiple redundancy schemes are described.
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Citations
20 Claims
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1. A system, comprising:
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a plurality of primary devices; and upon detection of failure of at least one of said primary devices, the remainder of said plurality of primary devices perform at least one function of the failed primary device, the function balanced by and between the remainder of said plurality of primary devices, wherein the remainder of said plurality of primary devices are recognized by the system as at least ones not designated as spare devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system, comprising:
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at least one primary upstream device; and at least another primary upstream device separate from the at least one primary upstream device; upon detection of failure of said at least one primary upstream device, said at least another primary upstream device performs at least one function of the failed one primary device, the function provided by said at least one another upstream device, wherein said another one upstream device is recognized by the system as not designated as a spare device. - View Dependent Claims (16, 17, 18)
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19. A method, comprising:
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in another device, receiving multicast status messages from one or more other devices separate from said another device; in said another device, determining a health of said one or more other devices from said status messages; and upon determining that a health of said one or more devices is unhealthy, switching said another device to perform a function of said one or more unhealthy devices.
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20. A method according to claim 20, comprising multitasking status messages from said one or more devices, said status messages indicating the health of said one or more devices and indicating a performance of said one or more devices.
Specification