Appeal No. 94-3790
Application 08/032,758
period to yield DOSC. Thus, Lofgren’s circuits operate in
such a manner that the rising clock edge of OSC is delayed one
clock cycle to yield DOSC. In one sense, the circuits in
Lofgren may be viewed as keying-in-on or operating only with
respect to the rising signal edges of OSC and DOSC and
essentially ignore or operate irrespective to the falling
signal edges of those OSC and DOSC signals. Therefore, they
may be said to operate in an independent manner as claimed.
The delay is a function of whether the DOSC signal leads or
lags the OSC signal and in accordance with the control signals
VCN and VCP. Claim 21 requires only one delay by means of one
control signal by means of one control terminal.
In accordance with the view we expressed in our original
opinion, the delay of the rising edges of succeeding OSC and
DOSC signals meets the single delay required of the claim. No
separate control terminal and no separate control signal and
no separate amount of delay is required for the claimed second
type control signal edges of claim 21 on appeal.
The claimed first type edges and second type edges are
not stated in the claim to be rising and falling edges
7
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007