Appeal No. 1999-2797
Application No. 08/609,875
scroll-enable mode to a scroll-disable mode by actuation and
interruption, respectively, of the second manual control member.
Appellants indicate at pages 2-4 of the specification that the
required coordinated operation of the first and second manual
control members in order to change the screen display minimizes
unintentional actuation of the control members.
Claim 1 is illustrative of the invention and reads as
follows:
1. A system included on a handheld control device,
the system comprising control means provided with a
first and a second manual control portion and a display
screen, the control means actuating a scroll-enable
mode upon actuation of the second manual control
portion by a user and, upon the actuating of the
scroll-enable mode, the control means being arranged to
scroll through a predetermined series of display items
in response to actuation of the first manual control
portion and to identify visually, each time in response
to a scrolling step, a next display item from the
series on the display screen, the control means
switching to a scroll-disabled mode in response to
interruption of actuation of the second manual control
portion, the series of display items scrolled being
selected from a number of different series of display
items by a mode of actuation of the second manual
control portion.
The Examiner relies on the following prior art:
Posso et al. (Posso) 5,627,531 May 6, 1997
(filed Sep. 30, 1994)
Macor 5,677,949 Oct. 14, 1997
(filed Dec. 22, 1994)
Kuga 5,686,940 Nov. 11, 1997
(filed Dec. 23, 1994)
2
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