COMMUNICATION DEVICE INACTIVITY PASSWORD LOCK
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`An IP.com Prior Art Database Technical Disclosure
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`Authors et. al.: Motorola
`Charles P. Schultz
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`Original Publication Date: November 01, 1996
`IP.com Number: IPCOM000007883D
`IP.com Electronic Publication Date: May 02, 2002
`Copyright: Motorola Inc. November 1996
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`
`Page 1 of 3
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`SAMSUNG EXHIBIT 1008
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`(S) MOTOROLA
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`Technical Developments
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`COMMUNICATIONDEVICE INACTIVITY PASSWORD LOCK
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`by Charles P. Schultz
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`When a communication device (radio, phone,
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`etc.), is misplacedorleft unattended, someone other
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`than the authorized user could use it, leaving the
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`legitimate user responsible for the consequences,
`financial or otherwise. A password lock feature
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`currrently allows users to “lock” their radios from
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`use unless a correct password is entered, but this
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`feature would not be activated when the device is
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`accidentally misplaced, or the user hastily leaves his
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`radio behind while attending to some urgent mat-
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`ter. An improvement over the current radio lock fea-
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`ture would be for the device to become locked after
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`it is inactive for a preprogrammedperiod of time,
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`similar to computer screen “locking” programs.
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`This invention allows the user to program an
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`inactivity timer which would be reset each time a
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`“physical input” occurs. If the timer expires, the com-
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`munication device enters the “locked” mode and
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`begins operation on a pre-programmedrevert chan-
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`nel which is defined by one ofthe personalities stored
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`in the device’s memory. Ifthe device is operating on
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`a system that requires registration with a site, it will
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`unregister prior to locking. The device optionally
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`sends an over-the-air signal on the revert channel
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`indicating the radio’s ID andits “locked” status. This
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`could alert a dispatcher to use a feature such as
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`Remote Monitor to aid in locating a lost or stolen
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`device. While locked, the device will not route any
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`audio to its speaker. The device will receive and
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`respond to over-the-air signaling, including an
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`“unlock” transmission from the base station which
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`can be used to assist users who have forgotten their
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`passwords. The device is subject to the same
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`unlocking procedure as the present radio password
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`lock feature and, upon unlocking, it will register on
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`the current site, if applicable. The device stores its
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`locked state in non-volatile memory so it remains
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`locked when poweris cycled.
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`For the purposes ofthis feature, a wide variety
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`ofactions are classified as “physical inputs” so legit-
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`imate operation will not be interrupted. In addition
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`to keypad, button and switch activation, receiving
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`bus messages for memory reprogramming will reset
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`the timer to insure that reprogramming will not be
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`interrupted. A motion-sensing device and circuit
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`could also be added to prevent the device from
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`locking while it is being carried around in dispatch
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`mode.
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`Some ofthe devices operating modes will inhibit
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`the activation of the inactivity timer. In order to
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`facilitate factory testing orfield servicing ofthe device,
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`the inactivity timer will not activate when it is in
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`“test mode” or during rekeying. The timer wil! also
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`remain inactive during Over-The-Air Programming
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`(OTAP) and Over-The-Air-Rekeying (OTAR). To pre-
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`vent interruption of critical transmissions, locking
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`will be inhibited during Emergency feature trans-
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`missions, and during phonecalls to emergency serv-
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`ices such as 911.
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`© Motorola, inc. 1996
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`9]
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`November 1996
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`Page 2 of 3
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`Page 2 of 3
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`(M) MOTOROLA
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`TechnicalDevelopments
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`Device Inactivity Password Lock
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`RADIO IDLE
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`Charles P, Schultz
`LOCKING SEQUENCE
`BLANK DISPLAY
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`A
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`EXPIRED?
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`STORE LOCKED
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`STATUS AND
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`REGISTERED ON
`A SYSTEM?
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`N
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`DEREGISTER
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`SWITCH TO REVERT
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`CHANNEL
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`SEND LOCKED
`STATUS?
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`SEND 1D AND STATUS
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`ON REVERT CHANNEL
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`STAY LOCKED UNTIL
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`UNLOCK SUCCESSFUL
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`© Motorola,Enc. 1996
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`92)
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`November 1996
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`Page 3 of 3
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`Page 3 of 3
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