Appeal No. 1999-1697
Application No. 08/550,270 Page 8
Blackwell, we agree with appellants (brief, page 8) that data
pump 308 of Blackwell is in essence a DSP; see (col. 7, lines 52
and 53) which discloses that data pump 308 may be a DSP
programmed as a data pump. If we followed the line of reasoning
advanced by the examiner and replaced the transceiver of Hartley
with plural transceivers as advanced by the examiner, the
resultant structure would have plural DSPs 308 and 370 as
disclosed in figures 4 and 5 of Blackwell, and would not result
in a single DSP controlling all of the transceivers as required
by claim 1, as well as each of the other independent claims.
However, although not brought to our attention by either the
examiner or appellants, we find that the third embodiment
disclosed in figure 9 of Blackwell discloses a single DSP (data
pump 508) activating both analog (512 and 514) and digital (518)
transceivers. The controller selectively provides a first
control signal to the data pump to selectively operate the data
pump in an analog mode and to engage the linear code and the
analog interface circuit. The controller further selectively
provides a second control signal to the data pump to selectively
operate the data pump in a digital mode and to engage the digital
interface circuit (col. 12, line 63 through col. 13, line 59).
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