Interactive video distribution systems – Video distribution system with upstream communication – Receiver
Reexamination Certificate
2006-06-27
2006-06-27
Beliveau, Scott (Department: 2614)
Interactive video distribution systems
Video distribution system with upstream communication
Receiver
C725S140000
Reexamination Certificate
active
07069578
ABSTRACT:
A cable television settop receiver and method includes a software component and a frequency acquisition method for determining the ability of the operating system/control program in the settop receiver to operate the settop receiver. The software component, referred to as a “bootloader”, executes on the processor contained in the settop receiver and determines the capability and version of the settop receiver operating system/control program. If the bootloader determines that the operating system/control program should be updated, the bootloader initiates a download sequence, the performance of which allows the proper operating system/control program to be downloaded to the settop receiver. The download occurs after receipt, by the settop receiver, of a code version table (CVT). The CVT includes information that the settop receiver uses to determine which frequency to tune to receive the replacement operating system/control program. In accordance with another aspect of the invention, the bootloader initiates a frequency hunt sequence to determine the proper frequency to which to tune to receive the CVT. The frequency hunt sequence covers the entire spectrum of possible frequencies over which to receive the CVT.
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“The PowerTV White Paper”, [online] [retrieved on Apr. 24, 2005] Retrived from the Internet Archive (WayBack Machine) using Internet <URL: http://web.archive.org/web/219971212014307/www.powertv.com/product/1execsum.html>.
Lett David B.
Prus Bohdan
Beliveau Scott
Scientific-Atlanta, Inc.
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