Appeal No. 97-1784
Application 08/011,068
chain from the period of the time signal. Appellants argue that
the propagation through the lock window circuit measures the
amount to adjust the delay elements so as to converge on the
period of the time signal. Appellants argue that neither
Rubinstein nor Collins teaches or suggests a lock window circuit
as recited in claim 8.
On page 4 of the answer, the Examiner argues that
Collins teaches a lock window circuit in column 5, lines 15-25.
The Examiner argues that array 50 shown in Figure 3 meets
Appellants’ claimed lock window unit. On page 6, the Examiner
further argues that Collins teaches in Figure 4 a lock window
circuit.
Upon a closer reading of Collins, we find that Collins
teaches in column 5, lines 5-24, a programmable delay chip 14
which is a variable length clock path whose delay is a function
of the circuit technology and of the bit patterns stored in a 6x7
array 50. The array 50 is used to hold the bit patterns which in
turn condition the paths through first and second sections 51 and
53, respectively, so as to vary the delay in each of the three
delay adjustments gross, medium and fine. In column 5, line 43,
through column 6, line 7, Collins teaches that Figure 4 shows the
8
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007