Appeal No. 1998-0905
Application 08/284,061
application program interface coupled between a subsystem
comprising a host CPU and a real-time signal processing
subsystem.
We agree with Appellants that the DSP manager 71 of Chen
is not an API, does not generate API commands, and does not
include an API. A review of the reference, see column 25,
lines 4 through 10, reveals that digital signal processor
manager API controller 461, which is part of DSP manger 71,
receives application program interface commands and routes
them to function blocks 457, 459, and 463. Therefore, the DSP
manager does not include an API but manages commands generated
by an API. Unit 61 is the API of the Chen system and is, as
asserted by Appellants, part of the CPU subsystem. Thus, Chen
does not meet the limitations of claims 1 and 3 nor of any
claim which depends therefrom.
Independent claim 7 requires that the API interoperate
with “the telecommunications [the CPU] subsystem and the
virtual realtime device to enable the telecommunications
subsystem to interoperate with [the] realtime signal
processing operations.” We find that in order for the API to
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