Appeal No. 1997-3854
Application No. 08/414,824
BACKGROUND
The appellant's invention relates to a communications system using a sharply
bandlimited keying waveform. An understanding of the invention can be derived from a
1
reading of exemplary claim 10 , which is reproduced below.
10. A method for transmitting a digital signal comprised of the steps of:
sampling a first digital data signal to produce a digital data sample;
generating a sharply bandlimited keying waveform for the digital data
sample;
weighting the sharply bandlimited keying waveform with a
corresponding data sample value and truncating outside an appropriate time
interval;
converting the weighted sharply bandlimited keying waveform into an
analog signal; and
transmitting the analog signal.
The prior art references of record relied upon by the examiner in rejecting the
appealed claims are:
Waters et al. (Waters patent) 4,468,794 Aug. 28, 1984
Tiemann 4,896,152 Jan. 23, 1990
Hawkins et al. (Hawkins) 4,973,977 Nov. 27, 1990
Walker 5,185,765 Feb. 09, 1993
1We note that the language of claim 10 states “converting the weighted sharply
bandlimited keying waveform into an analog signal” rather than converting the weighted
and truncated waveform/data. Therefore, the language of claims 1 and 10 is broader than
argued by the examiner and appellant.
2
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