PCT
`
`WORLD INTELLECTUAL PROPERTY ORGANIZATION
`International Bureau
`
`
`
`INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT)
`
`
`wo 98/38779
`
` ,(51) International Patent Classification 6 :
`(11) International Publication Number:
`
`H04M 1/72
`
`(43) International Publication Date:
`3 September 1998 (03.09.98)
`
`(81) Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR,
`(21) International Application Number:
`PCT/US98/O3763
`
`
`BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE,
`GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ,
`(22) International Filing Date:
`26 February 1998 (26.02.98)
`
`
`LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW,
`MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ,
`TM, TR, Tl‘, UA, UG, UZ, VN, YU, ZW, ARIPO patent
`(GH, GM, KE, LS, MW, SD, SZ, UG, ZW), Eurasian patent
`(AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), European patent
`(AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU,
`MC, NL, PT, SE), OAPI patent (BF, BJ, CF, CG, CI, CM,
`GA, GN, ML, MR, NE, SN, TD, TG).
`
`(30) Priority Data:
`08/808,623
`
`28 February 1997 (28.02.97)
`
`US
`
`(71) Applicant: QUALCOMM INCORPORATED [US/US]; 6455
`Lusk Boulevard, San Diego, CA 92121 (US).
`
`(72) Inventor: MALONEY, John, E.; 10030—53 Scripps Vista Way,
`San Diego, CA 92121 (US).
`
`
`
`(74) Agents: MILLER, Russell, B. et a1.; Qualcomm Incorporated,
`6455 Lusk Boulevard, San Diego, CA 92121 (US).
`
`Published
`With international search report.
`Before the expiration of the time limit for amending the
`claims and to be republished in the event of the receipt of
`amendments.
`
`
`
` __________»__l
`
`
`
`
`
`(54) Title: A PORTABLE COMMUNICATION DEVICE AND A METHOD OF PERFORMING MULTIPLE FUNCTIONS VIA POWER
`KEY OF THE SAME
`
`(57) Abstract
`
`A communication device (10) includes a power key (40) located on an outer
`surface of the housing which may provide multiple functions, but
`is resistant
`to initiation of undesired handset functions. Control circuitry (50) within the
`communication device may be configured to ignore any actuation of the power
`key (40) with a duration less than a determined time period. The control circuitry
`(50) performs a first function if the power key is depressed for a first duration (T1),
`and performs a second function when the power key is depressed for a second
`duration (T2). For example, depression of the power key (40) for a short period of
`time may silence an incoming call alert, whereas depression of the power key for
`a longer period of time will turn the communication device on or off.
`
`DETERMINE
`TIME OF
`
`POWER KEY
`DEPRESSION
`
`
`
`
`
`
`96
`
`GREATER
`THAN
`
`
`
`Qualcomm, Exh. 2010, p. 1
`Apple v. Qualcomm, |PR2018—01275
`
`Qualcomm, Exh. 2010, p. 1
`Apple v. Qualcomm, IPR2018-01275
`
`

`

`
`FOR THE PURPOSES OF INFORMATION ONLY
`
`
`
`ES
`FI
`FR
`GA
`GB
`GE
`GH
`GN
`GR
`HU
`IE
`IL
`IS
`IT
`JP
`KE
`KG
`KP
`
`
`
`Spain
`Albania
`AL
`Finland
`Armenia
`AM
`France
`Austria
`AT
`Gabon
`Australia
`AU
`United Kingdom
`Azerbaijan
`AZ
`Georgia
`Bosnia and Herzegovina
`BA
`Ghana
`Barbados
`BB
`Guinea
`Belgium
`BE
`Greece
`Burkina Faso
`BF
`ML
`Hungary
`Bulgaria
`BG
`MN
`Ireland
`Benin
`BJ
`MR
`Israel
`Brazil
`BR
`MW
`Iceland
`Belarus
`BY
`MX
`Italy
`Canada
`CA
`NE
`Japan
`Central African Republic
`CF
`NL
`Kenya
`Congo
`CG
`N0
`Kyrgyzstan
`Switzerland
`CH
`NZ
`Democratic People’s
`C6te d’Ivoire
`CI
`PL
`Republic of Korea
`Cameroon
`CM
`PT
`Republic of Korea
`KR
`China
`CN
`R0
`Kazakstan
`KZ
`Cuba
`CU
`RU
`Saint Lucia
`LC
`Czech Republic
`CZ
`SD
`Liechtenstein
`LI
`Germany
`DE
`DK
`Denmark
`LK
`Sri Lanka
`SE
`Estonia
`LR
`Liberia
`SG
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`Codes used to identify States party to the PCT on the front pages of pamphlets publishing international applications under the PCT.
`
`SI
`SK
`SN
`SZ
`TD
`TG
`TJ
`TM
`TR
`TT
`UA
`UG
`US
`UZ
`VN
`YU
`ZW
`
`Slovenia
`Slovakia
`Senegal
`Swaziland
`Chad
`Togo
`Tajikistan
`Turkmenistan
`Turkey
`Trinidad and Tobago
`Ukraine
`Uganda
`United States of America
`Uzbekistan
`Viet Nam
`Yugoslavia
`Zimbabwe
`
`LS
`LT
`LU
`LV
`MC
`MI)
`MG
`MK
`
`Lesotho
`Lithuania
`Luxembourg
`Latvia
`Monaco
`Republic of Moldova
`Madagascar
`The former Yugoslav
`Republic of Macedonia
`Mali
`Mongolia
`Mauritania
`Malawi
`Mexico
`Niger
`Netherlands
`Norway
`New Zealand
`Poland
`Portugal
`Romania
`Russian Federation
`Sudan
`Sweden
`Singapore
`
`Qualcomm, Exh. 2010, p. 2
`Apple v. Qualcomm, |PR2018—01275
`
`Qualcomm, Exh. 2010, p. 2
`Apple v. Qualcomm, IPR2018-01275
`
`

`

`WO 98/38779
`
`PCT/US98/03763
`
`1
`
`A PORTABLE COMMUNICATION DEVICE AND A METHOD OF PERFORMING MULTIPLE FUNCTIONS VIA POWER
`KEY OF THE SAME
`
`5
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`BACKGROUND OF THE INVENTION
`
`1. Field of the Invention
`
`The present invention relates to a communication device and to a
`
`a power key in a
`via
`functions
`method of performing multiple
`communication device. The communication device may be a portable
`device such as a wireless telephone.
`
`11. Description of the Related Art
`
`Wireless telephony has become increasingly popular with the general
`population as costs continue to decrease and service providers continue to
`expand the nature of the services they provide as well as their geographical
`coverage. Another aspect of the recent development of wireless telephones
`which has encouraged their
`increasing popularity are the tremendous
`reductions in size and weight, and hence portability, Of
`the telephone
`handset. This allows the handset
`to be carried by the user
`in many
`convenient
`locations such as a purse, automobile glove compartment, or
`jacket pocket. Unfortunately, however, such Widespread consumer use and
`ease of portability leads inevitably to an increase in careless handling and
`storage of the telephone handset.
`It is preferable, therefore, for telephone
`handsets to be made to withstand this careless handling Without operating
`in an undesired fashion.
`
`It can be appreciated that one type of undesirable behavior which a
`portable telephone handset can exhibit is an inadvertent keypad actuation
`when the handset
`is stored. This can lead to accidentally turning the
`handset on or Off, initiating a telephone call or the transmission of other
`undesired signals, or the performance of electronic functions the user does
`not? actually wish to perform. One serious consequence of such undesired
`actuation is the premature draining of the handset battery.
`Several telephone handset designs have been used or suggested in
`order to minimize this problem.
`For example, many of
`the recently
`introduced cellular telephone handsets are made to be foldable so that their
`
`size can be reduced to as small as possible when the handset is not in use. In
`
`the "flip-phone" described in US. Patent NO. 4,845,772 to Metroka, et a1., for
`
`SUBSTITUTE SHEET (RULE 26)
`
`Qualcomm, Exh. 2010, p. 3
`Apple v. Qualcomm, |PR2018—01275
`
`Qualcomm, Exh. 2010, p. 3
`Apple v. Qualcomm, IPR2018-01275
`
`

`

`WO 98/38779
`
`PCT/US98/03763
`
`2
`
`example, the handset keypad, including the on/ off button, is covered by the
`
`foldable flip portion of the handset when the handset is stored. While it can
`
`be appreciated that simply covering the buttons with the flip will provide
`
`some protection from inadvertent button actuation, the device described in
`
`the Metroka patent disables operation of the on/off switch when the flip is
`
`closed. This prevents actuation of the on/off switch when the flip is closed
`
`even when a foreign object such as a coin or paper clip is accidentally closed
`
`in under the flip.
`
`Devices such as those described in the Metroka et al. patent have at
`
`least one significant drawback. It is often convenient for a user to be able to
`
`turn the telephone handset on or off without opening the flip portion. This
`
`is impossible with the Metroka et al. device. It may be noted that even if the
`
`on / off button were accessible with the flip closed, the on/ off disable feature
`
`of the Metroka et al. device would still require the user to open the flip in
`
`order to turn the telephone on or off.
`Other functions are also convenient
`
`to have available to a user
`
`without opening a flip. For example, when an incoming call is received, the
`
`user may wish to silence the incoming call alert, and have the call go
`
`unanswered, be forwarded to a voice-mail service, or be processed in some
`
`other manner defined by the user.
`
`It is preferable in this case for the user to
`
`10
`
`15
`
`20
`
`be able to silence the alert Without opening the flip.
`
`Thus, a need exists for a portable telephone handset which resists
`
`inadvertent button actuation, while at the same time allows easy access to
`certain features which are convenient
`for the user to be able to utilize
`
`25
`
`quickly and easily.
`
`SUMMARY OF THE INVENTION
`
`30
`
`35
`
`According to one aspect of
`
`the invention there is provided a
`
`communication device comprising: a power key; and a control circuit,
`
`coupled to said power key, for sensing an actuation of said power key, and
`
`for silencing an alert in response to said actuation of said power key if a
`
`duration of said actuation is greater than a first predetermined time period,
`
`and for powering said communication device on or off if said duration of
`
`said actuation is greater than a second predetermined time period.
`
`According to another aspect of the invention there is provided a
`
`method for performing multiple
`
`functions via a power key in a
`
`communication device, the method comprising: sensing an actuation of said
`
`power key; silencing an alert in response to said actuation of said power key
`
`p.4
`Apple v. Qualcomm, |PR2018—01275
`
`Qualcomm, Exh. 2010,
`
`Qualcomm, Exh. 2010, p. 4
`Apple v. Qualcomm, IPR2018-01275
`
`

`

`WO 98/38779
`
`PCT/U598/03763
`
`3
`
`if a duration of said actuation is greater than a first predetermined time
`
`period; and powering said communication device on or off if said duration
`
`of said actuation is greater than a second predetermined time period.
`
`The invention also provides a communication device in which a key switch
`is provided for executing plural functions, the device comprising a circuit
`for monitoring the switch for actuation thereof and for responding to
`actuation of the switch for a time period greater than a first predetermined
`interval by causing a first function to be executed and responding to
`actuation of the switch for a second time period greater than a second,
`
`different predetermined interval by causing a second function to be
`executed.
`
`The improved handset may include a housing and an on/off switch
`
`located on an outer surface of the housing wherein the on/off switch is
`
`In some embodiments of the present invention, a key of
`accessible to a user.
`the handset can include features which may help resist
`initiation of
`undesired handset functions. Accordingly, one embodiment of the present
`invention comprises a portable communication apparatus comprising an
`on/ off switch and a control circuit coupled to the on/ off switch. The control
`
`the on/ off state of circuitry in the
`circuit may be configured to control
`portable communication apparatus. Furthermore, the control circuitry may
`be configured to ignore any actuation of the on/off switch with a duration
`
`less than a determined time period.
`
`Embodiments of the present
`
`invention also include a wireless
`
`telephone comprising a key coupled to control circuitry, wherein the control
`
`circuitry is configured to perform a first function if the key is depressed for a
`first duration, and is configured to perform a second function when said key
`is depressed for a second duration.
`The present
`invention further
`
`encompasses methods for operating communication devices. For example,
`one embodiment of the present invention includes a method of controlling
`the state of a cellular telephone handset comprising the steps of determining
`a time of depression of a key on the cellular
`telephone handset, and
`
`maintaining a current state of the cellular telephone handset when the time
`
`of depression of the key is less than a selected time period.
`
`The present invention may be implemented in a communication
`
`device having a multiple function keyswitch. The communication device
`
`comprises at least a power key, and a control circuit, coupled to the power
`key, for sensing an actuation of the power key, and for silencing an alert in
`response to the actuation of the power key if a duration of the actuation is
`
`greater than a first predetermined time period, and for powering said
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`Qualcomm, Exh. 2010, p. 5
`Apple v. Qualcomm, |PR2018—01275
`
`Qualcomm, Exh. 2010, p. 5
`Apple v. Qualcomm, IPR2018-01275
`
`

`

`W0 98/38779
`
`PCT/U898/03763
`
`4
`
`communication device on or off if the duration of the actuation is greater
`
`than a second predetermined time period.
`
`The communication device may further comprise a body portion
`
`having a front surface, a back surface, and a top surface, with the front
`
`surface having a user interface thereon, and the power key disposed on the
`
`top surface. Additionally,
`
`the communication device may comprise a
`
`moveable flip portion secured to the body portion by a hinge at the top
`surface of the body portion. Optionally, the communication device of Claim
`
`2 wherein said power key is disposed in a recessed portion of said top surface
`
`of said body portion to provide even greater resistance to inadvertent
`
`actuation.
`
`In one embodiment, the moveable flip portion covers the user
`
`interface when in a closed position, and the power key remains exposed
`
`when the moveable flip portion is in said closed position.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`The features, objects, and advantages of the present invention will
`
`become more apparent from the detailed description set forth below when
`
`taken in conjunction with the drawings in which like reference characters
`
`identify correspondingly throughout and wherein:
`
`FIG. 1 is a perspective View of a cellular telephone having an open
`
`hinged flip;
`
`FIG. 2 is a perspective view of a cellular telephone handset having a
`
`10
`
`15
`
`20
`
`25
`
`moveable earpiece;
`
`FIG. 3 is a side plan View of the cellular telephone handset of FIG. 1
`
`with the flip closed;
`
`FIG. 4 is a top plan View of the cellular telephone handset of FIG. 3;
`
`FIG. 5 is a cutaway View along lines 5-5 of the cellular telephone
`handset of FIG. 4.;
`’
`
`30
`
`FIG. 6 is a block diagram of a portion of the circuitry of the cellular
`
`telephone handset of FIG. 3;
`
`FIG. 7 is a flowchart of a portion of the actions performed by a cellular
`
`telephone handset in one embodiment of the present invention;
`
`35
`
`FIG. 8 is a flowchart of a portion of the actions performed by a cellular
`
`telephone handset in one embodiment of the present invention;
`
`FIG. 9 is a flowchart of a portion of the actions performed by a cellular
`
`telephone handset in one specific embodiment of the present invention
`
`incorporating a multifunctional power switch; and
`
`Qualcomm, Exh. 2010, p. 6
`Apple v. Qualcomm, |PR2018—01275
`
`Qualcomm, Exh. 2010, p. 6
`Apple v. Qualcomm, IPR2018-01275
`
`

`

`WO 98/38779
`
`PCT/US98/03763
`
`5
`
`FIG. 10 is a flowchart of a portion of the actions performed by a
`cellular telephone handset in another specific embodiment of the present
`invention incorporating a multifunctional power switch.
`
`DETAILED DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`Referring now to FIG. 1, a communication device, which in this
`
`is
`10,
`telephone handset
`a wireless
`comprises
`specific embodiment
`illustrated. The handset 10 may comprise a body portion 12 and a flip
`portion 14. The body portion 12 and flip portion 14 may further be coupled
`by a hinge 16. A handset 10 which includes such a hinged flip is often
`referred to as a "flip-phone".
`The foldable nature of such a handset 10
`
`renders storage rather convenient for the user, because the handset can be
`
`folded up into a small package and carried in a pocket, purse, etc. The
`handset 10 of FIG. 1 also includes an antenna 18, extending from one surface
`20 of the handset 10. Antenna 18 can be made retractable or fixed as is
`
`Several other standard wireless telephone handset
`known in the art.
`features are also illustrated in FIG. 1. These include a keypad 22, a display 24,
`and a microphone 26. Furthermore,
`the flip portion 14 may additionally
`comprise an earpiece 28.
`It should be noted that keypad 22 may also be
`another type of user interface such as a touch—sensitive screen or other user-
`interface as is known in the art.
`
`the flip portion 14
`In some embodiments of the present invention,
`includes a first portion 30 of an actuator, which has a mating second portion
`32 on the body 12. As will be explained in more detail below with reference
`
`to FIGS. 9 and 10, the actuator comprising first portion 30 and second portion
`32 can be used to alter the handset 10 response to various user commands.
`The actuator may be a mechanically actuated reed switch, a magnet and a
`hall effect switch, or may comprise other flip actuator mechanisms known
`to those in the art. One such alternative is described in US. Patent No.
`
`5,175,759 to Metroka et al., wherein the actuator and hookswitch is located
`
`It should be noted that the present invention is
`Within the hinge 16 itself.
`not limited to the type of switching mechanism used for the actuator, and
`that any type of switching as is known in the art, whether or not fully
`contained within hinge portion 16, may be used in place of first portion 30
`and second portion 32 as illustrated in FIG. 1. However, for clarity and
`simplicity, FIG. 1 is illustrated with an actuator comprising first portion 30
`and second portion 32.
`
`Qualcomm, Exh. 2010, p. 7
`Apple v. Qualcomm, |PR2018—01275
`
`Qualcomm, Exh. 2010, p. 7
`Apple v. Qualcomm, IPR2018-01275
`
`

`

`W0 98/38779
`
`PCT/US98/03763
`
`6
`
`An alternative embodiment of a wireless telephone handset
`
`is
`
`illustrated in FIG. 2. This embodiment also includes an antenna 18, a
`
`keypad 22, and a display 24. Rather than having a hinged flip 14 (see FIG. 1),
`
`however,
`
`this alternative embodiment
`
`incorporates a sliding earpiece 28,
`
`which is extended upward during use of the handset.
`
`In this embodiment,
`
`the actuator first portion 30 can be provided in the bottom surface of the
`
`earpiece 28, and can mate with the second portion 32 of the actuator in an
`
`upper horizontal surface 34 of the body of the handset. Alternatively, the
`
`actuator in FIG. 2 may be hidden behind the earpiece 28 and may comprise
`
`other switching mechanisms as are known in the art. Again, it should be
`
`limited to the type of switching
`invention is not
`noted that present
`mechanism used for the actuator, and that any type of switching as is known
`
`in the art, whether or not fully contained within earpiece 28, may be used in
`
`place of first portion 30 and second portion 32 as illustrated in FIG. 2.
`
`However, for clarity and simplicity, FIG. 2 is illustrated with an actuator
`
`comprising first portion 30 and second portion 32.
`
`FIG. 3 illustrates a side View of the wireless telephone handset of FIG.
`
`1 with the flip portion 14 closed, and mated with the body portion 12. As can
`
`be seen in FIG. 3, the two portions 30, 32 of the actuator mate when the flip
`
`portion 14 is closed. Volume control keys 36 may also be provided on one
`surface of the handset 10.
`
`A top view of the handset 10 of FIGS. 1 and 3 is shown in FIG. 4. As is
`
`shown in this Figure, some embodiments include a power key 40 in the
`
`surface 20 of the handset. This positioning of the power key provides the
`
`advantage of easy accessibility for the user.
`
`This is especially true for
`
`handsets which are being carried by the user in a belt-type carrying holster
`
`(not shown), as the power key 40 is positioned on an exposed surface of the
`
`handset 10. In such a carrying holster, the user would look down at surface
`20 and see power key 40.
`In some embodiments,
`the power key 40 is a
`momentary contact switch such as a membrane switch as is known in the
`
`art. The present invention is not limited to the type of keyswitch used.
`
`It may be noted, however, that an exposed power key 40 is prone to
`
`inadvertent activation. Accordingly, some embodiments of the handset 10
`
`may incorporate a recessed portion 42, illustrated in both FIGS. 4 and 5, in
`
`which the power key 40 is situated. This recess 42 provides one form of
`
`protection against inadvertent power key actuation.
`
`It should be noted that
`
`although FIGS. 4 and 5 illustrate various views of the wireless telephone
`
`handset 10 of FIG. 1, they are equally applicable to non-flip style wireless
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`p.8
`Apple v. Qualcomm, |PR2018—01275
`
`Qualcomm, Exh. 2010,
`
`Qualcomm, Exh. 2010, p. 8
`Apple v. Qualcomm, IPR2018-01275
`
`

`

`WO 98/38779
`
`PCT/US98/03763
`
`7
`
`telephones, such as the sliding earpiece example illustrated in FIG. 2, as well
`
`as other types of wireless handsets as are known in the art.
`
`Referring now to FIG. 6, it can be seen that the power key 40 and the
`
`actuator switch 30, 32 each provide one input to a control circuit 50 inside
`
`the handset 10. The control circuit 50 also interfaces with a memory 52,
`
`which may comprise both ROM and RAM, the keypad 22, and a clock 54.
`
`Further provided inside the handset 10 is a battery 56, which provides an
`
`energy source for the entire handset 10. The control circuit 50 also interfaces
`
`with a power supply circuit 60 which supplies appropriate voltage and
`current levels to one or more RF transceiver circuits 62 that drive the
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`antenna 18. In some advantageous embodiments of the present invention,
`
`the power supply circuit 60 is turned on and off via an enable signal from
`the control circuit 50. The control circuit 50 further controls a call alarm
`
`circuit 62, which alerts the user to an incoming telephone call via an
`
`audible, visual, or tactile signal as are known in the art.
`
`It can be appreciated that many variations to the circuitry illustrated
`
`in FIG. 6 may be created and are currently familiar to those of skill in the art.
`
`In many embodiments,
`
`the control circuit 50 will comprise one or more
`
`appropriately programmed microprocessors or microcontrollers.
`
`In
`
`addition, many possible interconnections are not illustrated. For example,
`
`in addition to the RF transceiver circuits 62, the keypad 22 and/ or the display
`
`24 may be powered by the power supply 60, as may be portions of the control
`
`circuit 50 itself. Furthermore, the power key 40 and actuator switch 30, 32,
`
`may interface with the control circuit in a variety of ways.
`
`In conjunction
`
`with FIGS. 7 through 10 below, the functions performed by the control
`
`circuit 50 and the associated circuitry of the handset 10 are described. Given
`
`the description herein, those of skill in the art will be readily able to design
`
`hardware and associated programming to implement those functions.
`As mentioned above, the power key 40 may be situated in a» recessed
`
`portion 42 of the handset housing to help prevent inadvertent actuation.
`
`It
`
`is advantageous, however,
`
`to take additional protective measures. Thus,
`
`some embodiments of the handset
`
`incorporate a sensing system which
`
`allows the phone to ignore momentary power key actuation if the time
`
`period for which the power key was depressed is
`
`shorter
`
`than a
`
`predetermined time period.
`
`FIG. 7 illustrates the steps performed by a
`
`communication device, such as, for example, the cellular telephone handset
`
`of FIGS. 1 through 5, which operates so as to ignore short duration
`
`depressions of the power key. In this Figure, the unit is assumed to begin
`
`the sequence on the ”on" state 70, and is performing its normal supervisory
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`Qualcomm, Exh. 2010, p. 9
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`and control functions as are typically performed by a wireless telephone
`handset.
`If the power key 40 is depressed, circuitry inside the handset
`determines the time period of the power key depression at step 72.
`This fimay be accomplished in many ways. For example, a timer using
`clock 54 may be started when the power key is initially depressed, and
`stopped when the power key 40 is released. In many currently implemented
`wireless telephone systems,
`the wireless telephone handset periodically
`receives an absolute time reference from the cell sites (not shown) with
`which it communicates.
`In these cases, the duration of power key 40
`depression may be determined by noting the time at which the power key 40
`was depressed and comparing it to the time at which the power key 40 was
`released. Clearly, many ways of determining the duration of power key 40
`depression may be used by one skilled in the art without departing from the
`present invention.
`
`Regardless of how the duration of power switch depression is
`determined, at step 74 the time is compared to a predetermined time,
`denoted "T1" in FIG. 7. At step 76, if the time of power switch depression is
`greater than T1, the unit is powered off. On the other hand, if the time of
`
`10
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`15
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`20
`
`power switch depression is less than T1 at step 74, the control circuit 50
`ignores the power key 40 actuation and returns to the initial normal
`
`25
`
`30
`
`35
`
`supervisory and control routine at step 70.
`
`It can be appreciated that this
`
`sequence provides additional protection against inadvertent power down of
`the handset because short duration power key actuation, as might occur
`accidentally, is ignored by the system.
`
`It can further be appreciated that the same type of sequence can be
`performed when the handset is initially in the off state. This is illustrated in
`FIG. 8.
`In this case, in contrast with FIG. 7, the handset 10 begins the
`sequence at step 80 in the off state. At step 82, in analogy with Figure 7, the
`unit determines the time of power key 40 depression for the actuation of the
`power key 40.
`Of course,
`this
`requires that some circuitry remain
`operational even when the unit is "off", as that term is used herein. The
`
`"off" state as used herein may also be termed a "sleep" mode, in that the RF
`
`transceiver circuitry 62, keypad 22, and many other circuit components are
`not powered in this state, but some of control circuitry 50 remains powered
`by the battery 56 to perform a limited set of housekeeping functions, such as
`monitoring the state of the power key 40.
`
`At step 84, the time of power key 40 depression is then compared to a
`predetermined time period denoted "T2".
`If the time of power key 40
`depression is less than T2 at step 84, the control circuit 50 ignores the power
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`Qualcomm, Exh. 2010, p. 10
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`Qualcomm, Exh. 2010, p. 10
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`to the initial off state (or sleep state)
`key 40 actuation and returns
`housekeeping routine at step 80. It may be pointed out that this time period
`T2 may be either different from, or the same as, T1 of FIG. 7 in the same
`
`wireless telephone handset.
`
`A significant additional feature of some embodiments of the present
`invention is that once circuitry for determining the time of key depression is
`implemented in a wireless telephone handset,
`it
`is possible to include
`additional functionality in that key. For example, a wireless telephone
`handset may be created which performs a first function when a key is
`depressed for a first period of time, and a second function when the key is
`pressed for a second period of time. A specific example of such a cellular
`telephone handset is illustrate in FIG. 9.
`
`FIG. 9 illustrates a sequence of functions performed by a wireless
`telephone handset, such as wireless telephone handset 10 of FIG. 1, which
`
`incorporates a power on/ off function with an incoming call alarm silencing
`function.
`In this specific embodiment, at step 90 the handset begins the
`sequence of FIG. 9 in the "on" state, as the handset 10 can typically only
`provide an incoming call alarm to a user if the handset is powered on when
`an incoming call is received.
`
`At step 92, the unit determines the time of power key depression in a
`manner similar to that described above with respect to FIGS. 7 and 8. At step
`94, the handset control circuitry then compares the time of power key
`depression with a first pre-determined time T1.
`If the time of power key
`depression was less than the time T1, the handset returns to the normal
`
`supervisory and control routine at 90. At step 96, if the time of power switch
`depression is greater than T1, the handset checks for the presence of an
`incoming call.
`If there is an incoming call, the alert feature of the handset
`
`will have been activated, and at step 98 the handset will silence the alert.
`After silencing the incoming call alert, or if no incoming call is present at
`that time, at step 100 the handset will then compare the time of power
`switch depression to a second predetermined time T2, which in many
`embodiments will be longer than the first predetermined time T1.
`If the
`time of power switch depression is less than time T2,
`the handset again
`returns to the normal supervisory and control routine at 90. However,
`if
`
`the time of power switch depression is greater than time T2, at step 102 the
`handset powers off. In this way, a single key performs both an incoming call
`alert silencing function and a power off function. As described above, this
`
`key may be left accessible to the user, and may therefore be conveniently
`available to the telephone user but still protected from accidental actuation
`
`10
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`15
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`20
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`25
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`30
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`35
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`Qualcomm, Exh. 2010, p. 11
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`by the fact that key actuations having a duration less than both T1 and T2 do
`
`not trigger the handset to perform any function.
`
`A more detailed flowchart of the functions performed in one possible
`embodiment of a cellular telephone handset is illustrated in FIG. 10. In the
`
`system illustrated in this Figure, a timer is used to set a first flag after a
`power key 40 on the handset 10 is depressed for a selected period of time.
`If
`
`the power key 40 remains depressed for an additional selected period of
`time, a second flag is set. The control circuit 50 of the handset 10 monitors
`
`10
`
`the status of these flags, and performs different functions depending on
`which, if any, of the two flags are set.
`
`15
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`20
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`25
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`30
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`35
`
`Referring now to FIG. 10, at step 110 the handset 10 may initially be in
`either the "on" or "off" state, performing its normal supervisory and control
`
`routine.
`
`In the handset embodiment described by FIG. 10, the control
`
`circuitry 50 in the handset detects the status of the power key 40 (as well as
`the keys on the keypad 22) at step 112 to determine whether or not the key is
`depressed at that moment. The hardware of the handset described by FIG. 10
`also includes a timer circuit which may be part of clock 54 for timing the
`period of power switch depression.
`
`Following step 112 and the determination of whether or not
`
`the
`
`power key is depressed when detected by the control circuitry 50, at steps 114
`or 116 the handset control circuit 50 also checks whether or not the timer is
`
`running.
`
`If the power key 40 is not depressed at step 112, and the timer is
`
`also not running at step 114, it means that no recent power key actuation has
`occurred, and the handset returns to the normal supervisory and control
`
`routine at 110. However, if the control circuit determines that the power key
`is depressed at step 112, and that the timer is not on at step 116, it indicates
`that the power key was depressed, and accordingly at step 118 the timer is
`
`started to time the duration of power key 40 depression.
`If at step 112 the control circuit 50 determines that the power key 40 is
`depressed, and at step 116 determines that the timer is on, this indicates that
`
`timer initiation at step 118 must have been performed after a previous
`detection of the power key 40, and that the power key 40 remains depressed.
`In this instance, the handset again returns to the normal supervisory and
`control routine at 110, effectively to await power key 40 release, as is
`described in more detail below. Thus,
`in this specific embodiment,
`the
`handset will start the timer shortly after the power switch is initially
`depressed, and will remain in the loop defined by steps 110, 112, and 116
`without performing any power key related functions as long as the power
`key 40 remains depressed. Additionally, as long as the power key 40 has not
`
`Qualcomm, Exh. 2010, p. 12
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`Qualcomm, Exh. 2010, p. 12
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`11
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`been actuated and the timer remains off, the handset remains in the loop
`defined by steps 110, 112, and 114 and again no power key 40 related
`
`functions are performed.
`
`After
`
`the timer
`
`is
`
`started at
`
`step 118,
`
`the handset makes
`
`a
`
`determination of two additional things. First, at step 120 it determines
`
`whether or not the actuator, which may comprise, for example, a flip or
`slidable earpiece as illustrated in FIG. 1 and 2, is open or closed. Sec