Appeal No. 2002-0076 Page 12
Application No. 09/144,842
"embodiments of the invention . . . shown and described," col. 8, ll. 66-67, therein. To
the contrary, the reference invites changes to its shower speaker telephone, specifying
"that various modifications and substitutions, as well as rearrangements of parts and
components can be made by those skilled in the art. . . ." Col. 8, l. 67 - col. 9, l. 2.
Turning to Sudo, we find that the reference recognizes a problem facing
speakerphones operating in an HDX mode. Specifically, "an alternately-talking system
actuated by a voice control switch . . . causes the received voice to vanish at its start
and end. . . ." Col. 1, ll. 50-52. Regarding this problem, the appellant admits, "[i]f both
parties try to speak simultaneously, a choppy sound effect known as clipping results.
Having to speak in turn can be unnatural and can make conversation difficult and
laborious." (Spec. at 1.) We further find that Sudo solves the problem by using the
FDX mode. Specifically, "a main device 1 and a sub-device 2 are arranged to enable
same-time talking through a radio line." Col. 3, ll. 13-15. As admitted by the appellant,
such a FDX mode "allows incoming and outgoing parties' voices to be simultaneously
transmitted so that there is no clipping or choppyness [sic]. This results in much more
natural and spontaneous flowing conversation." (Id.) Because Ford invites changes to
its shower speaker telephone, which includes a speakerphone, and Sudo solves a
problem facing speakerphones, we find that a suggestion, teaching, or motivation to
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