Appeal 2007-0958
Application 10/807,935
FINDINGS OF FACT
The following findings of fact (FF) are supported by a preponderance
of the evidence.
Stengel
1. Stengel describes that a “[r]eceiver 100 is placed in a battery saver
mode when a non-valid coded squelch signal is detected. …The battery
saver mode is departed once a change in the non-valid coded squelch signal
is detected.” (Stengel, Abstract).
2. Stengel describes that “[b]attery saving circuits are used to
minimize power consumption by periodically, rather than continuously,
supplying power to a receiver.” (Col. 1, ll. 10-11).
3. Stengel states at column 1, lines 12-17, that “[p]resently known
circuits operating in radio receivers periodically supply power, search for the
presence of an RF (radio frequency) carrier and then, if a carrier is found,
extend the time the power is supplied to permit a further search for a valid
coded squelch signal (CSS).”
4. In Stengel, “[t]he battery saver mode (BSM) is defined as the time
that certain elements of a receiver, such as; the synthesizer, and the
amplifiers are either off or in the standby mode.” (Col. 3, ll. 7-10).
5. Stengel further discloses that “[t]he opposite state of the BSM is
referred to as receiver ON state. The receiver ON state is defined as the
period that the receiver is on, either receiving and processing a signal with a
valid CSS or checking the contents of a non-valid CSS to determine its next
state.” (Col. 3, ll. 14-18).
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