Appeal No. 95-4553 Page 3
Application No. 08/057,548
recorder housing. (8:30-33.) Sander describes the locking of
the recorder housing as follows:
Because recorded communications may have
critical value, for example as evidence, the bay
containing each record deck is provided with an
electromechanical lock which is controlled by a
processor 60 over lines 78. Solenoid 80 will
withdraw bolt 82 against the force of spring 84 when
energized. Solenoid 80 is controlled by switch 86,
preferably located in the bay door handle, and
transistor 90, which in turn is controlled by
line 78 so that when transistor 90 is energized and
switch 86 is closed, bolt 82 is withdrawn. The open
or
closed state of each bay is
sensed over line 79 by
processors 60.
The rules
governing the bay lock
logic are as follows:
1. If one deck is
enabled for unlocking, all
others are disabled and
locked to prevent the
cabinet from [toppling].
2. If no password is
entered all decks are
disabled and locked.
3. If a password level
1 is entered, then all
record decks which are in
READY or RECORD and do not
have a guard tone failure
must be disabled and locked.
From Sander's Figure 2
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Last modified: November 3, 2007