Appeal No. 95-1109
Application 07/917,380
corresponding to the quantity of said
received light, and
comparing means for comparing the level
value output by said detecting means
to a predetermined reference value and
for generating a comparison result
signal;
a compact disk recognition switch; and
a microprocessor for determining said disk to be
a compact disk when focus lock is achieved by said pickup
after said pickup is moved to a position adjacent to said
compact disk recognition switch once loading of disks is
perceived by disk sensor, and for determining said disk to
be a laser disk when focus lock is not achieved after said
pickup is moved to said position adjacent said compact
disk recognition switch and when said laser disk
discriminating means does not detect said data domain of
said laser disk.
The examiner relies on the following references:
Yoshimaru et al. (Yoshimaru) 4,755,980 July 5, 1988
Reynolds 4,825,109 April 25, 1989
Kusano et al. (Kusano) 5,130,963 July 14, 1992
Otsubo 5,172,354 December 15, 1992
(filed September 13, 1990)
L.C. Shen et al. (Shen), Applied Electromagnetism (2d ed.
1987), page 156.
Claims 1, 4-5, and 8 stand rejected under 35 U.S.C. § 103
as being unpatentable over Otsubo and Kusano.
Claims 2-3, 6-7, 9-10, and 14-15 stand rejected under
35 U.S.C. § 103 as being unpatentable over Otsubo, Kusano,
Yosimaru, Reynolds, and Shen.
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