Appeal No. 95-2218
Application 07/902,073
claims 13 and 14 and enter a new ground of rejection for the
remaining claims.
2. Appellant filed the subject application on 22 June
1992. He claims no priority under 35 U.S.C. §§ 119 or 120.
3. The subject matter of the invention is a delayed read
data single shot (DRDSS) circuit for delaying a data signal read
from different zones on a zone-bit-recorded (ZBR) data storage
device. (Paper 1 at 1.)
4. Claim 12, the only independent claim on appeal, sets
forth the subject matter of the invention as follows:
Window margining apparatus for detecting the
occurrence of a data pulse reproduced from a zone bit
recorded data storage device within a window duration,
comprising:
a delayed read data single shot (DRDSS) circuit
for delaying by an adjustable amount the data pulse
reproduced from said data storage device to produce a
DRDSS-delayed data pulse, the amount of delay being
determined by the zone from which said data pulse is
reproduced;
variable delay means coupled in common with said
DRDSS circuit for delaying said data pulse reproduced
from said data storage device;
window pulse generating means coupled to said
DRDSS circuit for generating a window pulse of
predetermined duration in response to the DRDSS-delayed
data pulse; and
detecting means coupled to said window pulse
generating means and to said variable delay means for
detecting if the data pulse delayed by said variable
delay means occurs within said window pulse.
5. According to the disclosure, "the delay circuit . . .
has been described by those of ordinary skill in the art as a
- 2 -
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007