Appeal No. 2001-1944
Application No. 08/734,857
well known in the art to utilize a separate microphone and
speaker connected to the sound card of a PC for purposes of
implementing internet telephony. As expressed at the top of page
two of the principal brief on appeal, “the invention differs in
that a telephone handset is used and is connected only to the
system’s sound card.”
Schindler’s Fig. 1 shows a home entertainment system 110
which is based upon personal computer 118 in the figure. The
system utilizes plural remote control devices 124, 126. These
are shown in Figs. 9 and 10 respectively. Fig. 3 shows the
input/output to a personal computer 118 in Fig. 1, and the
input/outputs consist of two sound cards 320, 321 as well as an
RF input/output element 324. The sound card 320 in Fig. 3 is
shown in more detail in Fig. 6 and, as noted by the examiner in
the answer, includes a microphone input 620 and speaker line
output 618. The input/output connections themselves from Fig. 3
are shown in Fig. 7 and the sound card is also shown there with
the same speaker line output 618 and the microphone input 620 as
a part of the sound card. Figs. 6 and 7 are discussed at column
12 of Schindler.
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