Scalable programmable video recorder

Details Scalable programmable video recorder Scalable programmable video recorder

2007-10-05

2010-06-22

Lewis, Cheryl (Department: 2167)

Data processing: database and file management or data structures

File or database maintenance

Database backup

C707S999204, C719S328000

Reexamination Certificate

active

07743032

ABSTRACT:
A programmable video recorder (PVR) includes a writer application programming interface (API) and a reader API that operate essentially independently to enable the PVR to be networked to multiple reader applications. The writer API creates a backing store and a shared memory mapped file. The backing store stores streamed data in temporary files. The shared memory mapped file stores state information of the backing store files. The reader API receives requests from reader applications to access the stored streamed data. In response to the requests, the reader API permits the reader applications to access the shared memory mapped file to determine where the stored streamed data is located. Upon locating the stored data, the reader API permits the requesting reader applications to access the stored streamed data.

REFERENCES:
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patent: 6266666 (2001-07-01), Ireland et al.
patent: 6714720 (2004-03-01), Lightstone et al.
patent: 6760535 (2004-07-01), Orr
patent: 6971121 (2005-11-01), West et al.
patent: 6990677 (2006-01-01), Pietraszak et al.

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