Appeal No. 2000-1259
Application 08/815,894
The rejections and references
The rejections are based on the following U.S. patents.
Petersen 5,463,603 Oct. 31, 1995
(filed Jan. 29, 1993)
Dudley et al. (Dudley) 5,583,706 Dec. 10, 1996
(filed Nov. 17, 1994)
Claims 43, 44, 52-54, and 57-61 stand rejected under
35 U.S.C. § 102(e) as anticipated by Petersen.
Claims 43, 44, and 52-63 stand rejected under § 102(e) as
anticipated by Dudley.
The merits of the rejections
Dudley's Figure 1 shows what Dudley describes as a
conventional sampled amplitude recording channel, which includes
a variable gain amplifier 22 and a sampler 24 which are
controlled by gain and timing control circuit 28. Also included
is a discrete time sequence detector 34. Comparing Appellants'
claim 43 to this figure, the claimed discrete timing recovery
circuit reads on sampler 24 and gain and timing control circuit
28, the claimed discrete time gain control circuit reads on
variable gain amplifier 22 and gain and timing control circuit
28, and the claimed discrete time sequence detector reads on
discrete time sequence detector 34.
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