Appeal No. 96-2444
Application 08/360,194
mode or sleep mode) in which "power is removed from the hard
disk unit, the floppy disk unit, the LCD, and miscellaneous
circuitry, and the system clock provided to the microprocessor
and other portions of the circuitry is stopped" (col. 2,
lines 20-23). Carter's standby mode corresponds to
appellants' sleep mode. The system comes out of the standby
mode when the user depresses a switch 58 which starts the wake
up operation. Thus, Carter discloses that it was known to
switch to a sleep mode (as defined in appellants' claims) from
a normal mode automatically after a period of inactivity and
to switch to a normal mode from a sleep mode by a manual
switch.
The relevant admitted prior art is found mostly in the
section entitled "Commanding Entry into a Reduced-Power Mode"
at pages 4-5 of the specification. It was known to use more
than one reduced power mode, including a standby mode for
operation at a first level of reduced power and a sleep mode
for deeper inactivity. It was known in the prior art to use
two buttons: a button actuable by a user's digit to switch
the computer between a normal and a standby mode and a
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