Appeal No. 2001-0338
Application No. 08/932,953
Ninomiya teaches that when there is no input to the keyboard
27 for a predetermined time period, the BIOS supplies the PSC 37
with a signal indicating this, and the PSC 37 controls the back
light device 47 so as to lower the level of the brightness of the
fluorescent tube. The function for lowering the level of the
brightness of the display device under certain conditions will be
hereinafter called a "display auto-off function." See column 4,
lines 1-14 of Ninomiya. Ninomiya teaches that the display device
in its embodiment is a LCD 35 which is a liquid crystal device.
A back light device 47 is mounted on the reverse side of the LCD
35. The display controller 33 is connected to the system bus 17.
See column 3, lines 30 -37 of Ninomiya. Ninomiya further teaches
that Figure 3a shows part of the power saving menu. If the user
wants to effect the display auto-off function, he can change the
display auto-off items so that the waiting time periods can be
one of the following 3, 5, 10, 15, 20 and 30 minutes. If, when
data indicative of a predetermined time period is input in the
display auto-off item, the user does not perform the key
operation until the set waiting time, the level of brightness of
the back light 47 is automatically lowered by the predetermined
value. See column 6, lines 15-47 of Ninomiya. Furthermore, as
pointed out above, in column 9, lines 47-67, Ninomiya teaches
1414
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