Appeal No. 2002-1380
Application No. 08/786,270 Page 12
ancillary code and the code-program information stored in code-
program library 88 (page 38). Figure 6 shows two different
examples of reference records. In the first record, no
replication data is shown because an ancillary code was detected.
In the second record, replication data is shown because no
ancillary code was detected (pages 38 and 39). For a small
system, central office functions may be done at a single
location. For a large, e.g., nationwide system, some functions
such as identification of real time viewing may be done at a
hierarchy of central offices and other functions such as
identification of viewing of rented tapes may be done at a single
master central office (page 40). Records are processed in
accordance with the routine shown in figure 7 (id.).
As shown in figure 7, block 180 determines whether tuning
records 120 from the household include ancillary codes. If tuning
records 120 include ancillary code, the program Ids are obtained
from program code library 88, and the program viewing records are
stored in block 182. The records indicate the programs that were
watched. This process, however, serves to identify both real-
time viewing and non real-time viewing such as playback of an in-
home recording of an encoded broadcast program. Block 184
compares the tuning records having no ancillary code to the
Page: Previous 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Next
Last modified: November 3, 2007