Appeal No. 95-1292
Application 07/911,471
preserved. Claim 16 requires the signal to be an NTSC
signal. Both Takabayashi and Ueno transmit caller
information to a television. Ueno further teaches
transmitting third-party caller information to the
television while the first communication path is preserved.
As we noted earlier, anyone implementing the
Takabayashi/Ueno system on a standard television in the
United States (or Japan for that matter) would have used an
NTSC signal because the NTSC set the standard for television
signals.
K Claims 17-21 require displaying the caller information in an
alphanumeric format, including at least either a telephone
number or a name. Takabayashi teaches displaying the name
as an improvement over the existing practice of displaying
the number. One skilled in the art would have been
motivated to choose at least one or the other for display on
a conventional television set. Although a name is easier to
comprehend, the number is more convenient for returning the
call later. One skilled in the art would likely provide
both since the same character generator can easily produce
both. In any case, the choice between these two known
options (each with advantages and not mutually exclusive)
does not present a patentable distinction.
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