Appeal No. 2002-1380
Application No. 08/786,270 Page 10
code reader 60 reads video codes inserted into a video line of
one or more vertical blanking intervals. Signature extractor 62
collects signatures from the received household signals from
which a code cannot be read (pages 24-26). Tuner 70 of the
reference apparatus 32 is tuned to each of the possible channels
i.e., program sources that the household can receive. Reference
apparatus 32 also includes a signature extractor 72 for each
received channel. Reference extractor 72 operates similar to
household signature extractor 62 to extract reference signatures
that can be compared to the program signatures extracted by
household signature extractors 62 (page 27).
Reference apparatus 32 further includes program replication
apparatus 78 which creates a replica of a stored program and
stores the replica in a memory 80, so that it can be retrieved by
a central office computer 82. At the central office, a human
operator can view the program on terminal 84 for the purpose of
identifying non-encoded programs received at local monitoring
site 34 (page 29). The reference apparatus 32 may also
incorporate a reference code reader 86 for each received channel.
The code read by the reference code reader 86 is the same as the
code read by household code reader 60. The code read by 86 is
compared to code and program data stored in code-program name
Page: Previous 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Next
Last modified: November 3, 2007