Appeal No. 1998-0219 Page 3
Application No. 08/265,000
9. A digital cordless telephone apparatus
comprising:
a master station that periodically transmits a
master control signal over a channel, the master
control signal having a leading edge and a trailing
edge;
a plurality of sub-master stations, each sub-
master station transmitting a sub-master control
signal in response to each received master control
signal a predefined time after receiving the
trailing edge of each master control signal so that
none of the sub-master control signals are output at
the same time, each sub-master control signal having
a leading edge and a trailing edge, a transmission
interval being defined from the leading edge of one
of the master control signals to the trailing edge
of the sub-master control signal that is last to be
transmitted in response to said one of the master
control signals; and
a plurality of remote stations, each remote
station receiving the master and sub-master control
signals, determining the periodicity of the
transmission interval, de-energizing a reception
unit after the periodicity of the transmission
interval has been determined, and energizing the
reception unit only during every n transmission
intervals to receive the master and sub-master
control signals over the channel, where n is an
integer.
The references relied on in rejecting the claims follow:
Natarajan et al. (Natarajan) 5,241,542 Aug.
31, 1993
(filed Aug. 23, 1991)
Mock et al. (Mock) 5,382,949 Jan.
17, 1995
(filed Feb. 1, 1993)
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