Minimizing the dependency of source code on the in-band resources of a set-top box
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United States of America Patent
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Jun 15, 2010
Grant Date -
Jul 7, 2005
app pub date -
Aug 10, 2004
filing date -
Jan 5, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is directed to minimizing the dependency of source code on the characteristics of a set-top box's in-band (streaming video or audio) hardware. The set-top box software consists of a device driver layer, which is intimately aware of hardware characteristics, an application layer, which is relatively unaware of any hardware details, a middleware layer which is also relatively unaware of any hardware details, and a device translation layer (DTL). In the DTL, all of the translation between device abstractions to device driver calls that were formerly made in middleware are moved down to an engine manager. Middleware thus becomes device-independent with respect to in-band devices, and porting Middleware to new hardware becomes trivial.
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