Interactive video distribution systems – Video distribution system with upstream communication – Transmission network
Reexamination Certificate
2007-02-02
2010-10-12
Hirl, Joseph P (Department: 2426)
Interactive video distribution systems
Video distribution system with upstream communication
Transmission network
C725S131000, C725S139000, C725S100000, C348S731000
Reexamination Certificate
active
07814525
ABSTRACT:
In certain embodiments, a method carried out in a digital television receiver device incapable of full two way communications, of receiving switched digital television programs involves storing a virtual channel table in the digital television receiver device, the virtual channel table having entries for each available channel and having a channel type indicator that identifies switched digital channels; receiving a command indicative of selection of a switched digital channel having the switched digital channel type indicator in the stored virtual channel table; sending a request from the television receiver device for the switched digital channel; responsive to the request, receiving a response that either grants the request or denies the request; and if the response grants the request, receiving an updated virtual channel table having updated table entries. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
REFERENCES:
patent: 7051361 (2006-05-01), Kim et al.
patent: 2002/0104085 (2002-08-01), Takagi et al.
The Society of Cable Telecommunications Engineers: American National Standard; ANSI/SCTE 65 2002, Service Information Delivered Out-of-Band for Digital Cable Television.
Lejeune Stephane
Pedlow, Jr. Leo M.
Hirl Joseph P
Miller Jerry A.
Miller Patent Services
Sony Corporation
Sony Electronics Inc.
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