Case 1:22-cv-22706-RNS Document 1-19 Entered on FLSD Docket 08/25/2022 Page 1 of 11
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`EXHIBIT B
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`

`

`USOO73 19889B2
`
`(12) United States Patent
`Goris et al.
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 7,319,889 B2
`*Jan. 15, 2008
`
`(54) SYSTEM AND METHOD FOR CONSERVING
`BATTERY POWER IN A MOBILE STATION
`
`(75) Inventors: Norman Goris, Dortmund (DE);
`Wolfgang Scheit, Rothenbach (DE)
`(73) Assignee: Agere Systems Inc., Allentown, PA
`(US)
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 0 days.
`This patent is Subject to a terminal dis
`claimer.
`
`(*) Notice:
`
`(21) Appl. No.: 11/516,316
`(22) Filed:
`Sep. 6, 2006
`
`(65)
`
`Prior Publication Data
`US 2007/OOO447O A1
`Jan. 4, 2007
`
`Related U.S. Application Data
`(63) Continuation of application No. 10/463,630, filed on
`Jun. 17, 2003, now Pat. No. 7,113,811.
`(51) Int. Cl.
`(2006.01)
`H04M I/00
`(52) U.S. Cl. ..................... 455/574; 455/566:455/412;
`455/343.1; 455/550.1
`(58) Field of Classification Search ............. 455/550.1,
`455/4.1.2, 566,572-574,343.1-343.6, 90.1-90.3,
`455/69, 522; 315/169.3, 160; 34.5/211,
`345/156, 166, 169; 713/230, 300 340:
`340/732,539.23,539.26,539.3; 379/55.1,
`379/56.1-56.3, 370376.02
`See application file for complete search history.
`References Cited
`
`(56)
`
`U.S. PATENT DOCUMENTS
`
`5,712,911 A
`5,881,377 A
`
`1/1998 Her .........
`3, 1999 Giel et al.
`
`... 379,388.01
`
`- - - - - - - - - - - - - - - 455,343.1
`
`3/1999 Gordon ................... 455,552.1
`5,884, 156 A
`6/2001 Grivas et al. .................. 3,566
`6,246,862 B1
`7/2001 Kim et al. ............... 315/1693
`6,265,833 B1
`8/2001 Son et al. ................... 455,566
`6,278,887 B1
`12/2001 Yoon ....................... 455,550.1
`6,330,457 B1
`6,665,803 B2 * 12/2003 Lunsford et al. ........... T13,320
`6,684,294 B1
`1/2004 Huffman ...........
`... 711/112
`6,726,099 B2
`4/2004 Becker et al. .............. 235,380
`D493,451 S
`7/2004 Wada ........................ D14,247
`6,836,212 B2 12/2004 Sawinski ...
`... 340,539.23
`6,853,850 B2
`2/2005 Shim et al. .............. 455,560.1
`2002fOO84998 A1
`7/2002 Sawada ...................... 345,211
`2002/0177475 A1 11, 2002 Park .......
`... 455,574
`2003.0036412 A1
`2/2003 Chong ........................ 455,566
`2003. O197597 A1* 10, 2003 Bahl et al. ................. 340,732
`2004/0097.261 A1
`5/2004 Ujii ......................... 455,575..1
`2004/0198458 Al 10/2004 Kawamura .................. 455,566
`
`
`
`(Continued)
`FOREIGN PATENT DOCUMENTS
`
`DE
`
`195 37 224 A1
`
`8, 1995
`
`Primary Examiner—George Eng
`Assistant Examiner Kamran Afshar
`
`(57)
`
`ABSTRACT
`
`In one embodiment, a mobile station including a chassis
`having a display, a power reducer, a proximity sensor, and a
`microprocessor. The power reducer controls power con
`Sumption of the display. The proximity sensor is coupled to
`the chassis and causes the power consumption to be reduced
`when the display is within a predetermined range of an
`external object. The microprocessor is coupled to the proX
`imity sensor and to the display and automatically activates
`the proximity sensor based on the mobile station receiving
`an incoming wireless telephone call.
`
`13 Claims, 4 Drawing Sheets
`
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`
`
`

`

`US 7,319,889 B2
`Page 2
`
`U.S. PATENT DOCUMENTS
`
`11/2004 Perez et al. ................. T13,320
`2004/0225904 A1
`2004/0252115 A1 12/2004 Boireau ......
`345,211
`
`
`
`1/2006 Bahl et al. .................. 455,574
`2006/00 19724 A1
`2003/0284.848
`* 12/2006 Lin ............................ 345/169
`
`* cited by examiner
`
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`

`

`U.S. Patent
`
`Jan. 15, 2008
`
`Sheet 1 of 4
`
`US 7,319,889 B2
`
`FIGURE 1.
`
`
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`

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`U.S. Patent
`
`Jan. 15, 2008
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`Sheet 2 of 4
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`US 7,319,889 B2
`
`FIGURE 2
`
`
`
`160
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`

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`U.S. Patent
`
`Jan. 15, 2008
`
`Sheet 3 of 4
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`US 7,319,889 B2
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`300
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`
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`
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`ls telephone call
`active?
`302
`
`Activate proximity
`SenSOr
`303
`
`ls external object
`proximate?
`304
`
`ReduCe
`display power
`305
`
`FIGURE 3
`
`

`

`U.S. Patent
`
`Jan. 15, 2008
`
`Sheet 4 of 4
`
`US 7,319,889 B2
`
`Incoming call?
`402
`
`Activate proximity
`SeSO
`403
`
`
`
`ls external object
`proximate?
`404
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`Automatically answer
`incoming call
`405
`
`FIGURE 4
`
`

`

`1.
`SYSTEMAND METHOD FOR CONSERVING
`BATTERY POWER IN A MOBILE STATION
`
`US 7,319,889 B2
`
`CROSS-REFERENCE TO RELATED
`APPLICATIONS
`
`This application is a continuation of U.S. application Ser.
`No. 10/463,630, filed on Jun. 17, 2003, now U.S. Pat. No.
`7,113,811 the teachings of which are incorporated herein by
`reference.
`
`10
`
`TECHNICAL FIELD OF THE INVENTION
`
`The present invention is directed, in general, to mobile
`stations and, more specifically, to a mobile station of mobile
`radio system having a reduced power consumption under
`certain operating conditions.
`
`15
`
`BACKGROUND OF THE INVENTION
`
`Mobile stations have found many uses in today’s world.
`When paired with a single base station located at a user's
`own premises, they are called “cordless telephones.” When
`they interact with various, geographically distributed cellu
`lar base stations, they are called “cellular telephones' or
`simply “cell phones.”
`Usually the stand-by time, as well as the talk-time, of a
`mobile station depend on the lifetime of a (rechargeable)
`battery inserted within the mobile station and hence, on the
`load and/or on the capacity of the battery.
`Increasing of the capacity of the battery would increase
`the lifetime of the mobile station, but batteries having
`increased capacities are often larger, heavier or more expen
`sive, none of which are desirable attributes for a portable,
`affordable mobile station. Accordingly, what is needed in the
`art is a way to prolong the lifetime of a mobile station
`without having to use a battery with an increased capacity.
`
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`SUMMARY OF THE INVENTION
`
`To address the above-discussed deficiencies of the prior
`art, the present invention provides a mobile station, includ
`ing: (1) a chassis having a display and (2) a proximity sensor
`coupled to the chassis and adapted to cause a power con
`sumption of the display to be reduced when the display is
`within a predetermined range of an external object.
`Thus, by reducing the power consumption of the display
`of an activated telephone set in case the display is not
`needed, i.e., in particular during a telephone call, current is
`saved instead of needlessly consumed from the (recharge
`able) battery. Accordingly, the spared available battery
`power may be significant, especially for color displays,
`resulting in an overall increasement of the stand-by and/or
`talk time of the telephone set.
`According to preferred embodiments the means are
`adapted to Switch-off the display in response to a detection
`that the set, preferably the display of the set, is attached near
`to an object, in particular to the ear.
`As a consequence, if a call for example is incoming for
`example, possibly the user wants to see by means of the
`display the number and/or the stored name of the calling
`party. However, if the user wants to accept the call and hence
`is attaching the telephone set to the ear, the invention enables
`that the display is switched off. In a similar way, in case the
`user is trying to call a third party he may want to have a look
`at the display for verifying the entered number, but when the
`call is established he is likewise attaching the set and
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`2
`accordingly the display to his ear for performing the call. On
`the other hand, as long as the telephone set is inside a pocket,
`for example, it is not necessary to keep the display in an
`on-condition or to indicate the number and/or the name of a
`calling party.
`Moreover, the means may be further adapted to switch-on
`the display in response to a detection that the set, preferably
`the display of the set, is moved away from any object, in
`particular from the ear.
`As an alternative or in addition, the triggering event for
`current saving purposes may also be selectable by the user,
`for example via a menu list. According to further preferred
`refinements, the proximity sensor is proposed to be a heat
`flow or temperature sensor, an optical or infrared sensor, or
`a load sensor. However, as a further advantage, basically any
`kind of proximity sensor which is capable of observing a
`close range or Small distance may be used.
`Correspondingly, the invention proposes a method for
`saving available battery power of a mobile station, in
`particular of a mobile station comprising the steps of detect
`ing an attachment of the set, in particular of the display of
`said set near to an object, in particular to the ear, and
`Switching off the display in response to Such a detection in
`case the display is in an on-condition.
`The foregoing has outlined, rather broadly, preferred and
`alternative features of the present invention so that those
`skilled in the art may better understand the detailed descrip
`tion of the invention that follows. Additional features of the
`invention will be described hereinafter that form the subject
`of the claims of the invention. Those skilled in the art should
`appreciate that they can readily use the disclosed conception
`and specific embodiment as a basis for designing or modi
`fying other structures for carrying out the same purposes of
`the present invention. Those skilled in the art should also
`realize that Such equivalent constructions do not depart from
`the spirit and scope of the invention in its broadest form.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`For a more complete understanding of the present inven
`tion, reference is now made to the following descriptions
`taken in conjunction with the accompanying drawings, in
`which:
`FIG. 1 schematically depicts a preferred embodiment of a
`mobile station having the inventive detection functionality;
`and
`FIG. 2 schematically depicts a block diagram showing
`essential components of the invention;
`FIG. 3 is a flow diagram of exemplary steps for reducing
`power to a display; and
`FIG. 4 is a flow diagram of exemplary steps for auto
`matically answering an incoming call.
`
`DETAILED DESCRIPTION
`
`FIG. 1 illustrates a mobile station 110 of a mobile radio
`telecommunication system having a loudspeaker 120 and a
`microphone 130. A proximity sensor 140 is located near a
`display 150 toward a side of the loudspeaker 120. A keypad
`160 allows a user (not shown) to establish an outgoing call,
`accept an incoming call and/or terminate an active call.
`However, it should be apparent to one skilled in the pertinent
`art, that these functionalities can be also performed by other
`control means, for example by speech control. The proxim
`ity sensor 140 is integrated within the mobile station 110 to
`enable a functionality as described in more detail with
`regard to FIG. 2.
`
`

`

`3
`As can be seen from FIG. 2, an incoming call may be
`managed by a central processing unit 220, for example for
`further specific processing. For example, the number or the
`name of the calling party stored within a storage (not
`referenced) implemented within the mobile station 110 can
`be depicted at the display 150.
`If the user of the mobile station 110 wants to accept the
`incoming call 210, he may press a key on the keypad 160 or
`issue a voice command. Alternatively, an incoming call may
`directly activate the proximity sensor 140 without the neces
`sity of pressing a key on the keypad 160 to accept the call.
`In response to the acceptance of the incoming call 210 or
`automatically, the proximity sensor 140 is activated to
`monitor a proximity 230 to an external object (not shown),
`for example a range of about five centimeters. This is
`preferably done by a standard low-cost proximity sensor, for
`example a thermal sensor. However, other proximity sen
`sors, such as conventional mechanical proximity (load)
`sensors, optical sensors or range detecting sensors, fall
`within the broad scope of the present invention. If the
`proximity sensor 140 detects an external object (such as the
`user's ear) within the monitored range, the power consump
`tion of the display 150 is reduced, most preferably by
`switching the display 150 completely off, as indicated by an
`arrow 240, to spare battery power during the telephone call.
`When the telephone call 210 is finished, the user of the
`mobile station 110 typically moves the mobile station 110
`away from his ear. This causes the proximity sensor 140 to
`move out of range of the external object (in this case the
`user's ear). Accordingly, in response thereto, the display 150
`is Switched back on, enabling the user to look at information
`on the display 150.
`Correspondingly, for an outgoing call, the proximity
`sensor 140 is activated by pressing a key on the keypad 160
`to establish the outgoing call to a third party. As long as the
`outgoing call remains in effect and the proximity sensor 140
`detects proximity to an external object, e.g., the ear of the
`user, the display 150 remains in a state of reduced power
`consumption, or off, as the case may be.
`The function of switching the display off or on or other
`wise reducing the amount of power the display consumes
`may comprise hardware and/or software components. For
`example, electronically readable instructions executable in
`the central processing unit 220 may be stored on a memory
`chip located in the mobile station 110 and adapted to
`cooperate with the proximity sensor 140 to perform the
`function.
`Moreover, if the proximity sensor 140 is directly activated
`by an incoming call or automatically activated, the display
`can be kept in a Switched-off condition as long as the mobile
`station 110 is, for example, within a pocket (not referenced)
`or the like and is only switched on when the user retrieves
`the mobile station 110 from the pocket to enable the user to
`look on the display 150 for an information about the calling
`party. If the user then wants to accept the call and thence
`places the mobile station 110 proximate an external object,
`Such as his ear, the proximity sensor 140 again detects an
`object, causing the display again to be Switched off.
`FIG. 3 illustrates exemplary steps for reducing power to
`a display, as described above, and FIG. 4 illustrates exem
`plary steps for automatically answering an incoming call, as
`described above.
`Although the present invention has been described in
`detail, those skilled in the art should understand that they can
`make various changes, Substitutions and alterations herein
`without departing from the spirit and scope of the invention
`in its broadest form.
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`US 7,319,889 B2
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`10
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`4
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`What is claimed is:
`1. A mobile station, comprising:
`a display;
`a proximity sensor adapted to generate a signal indicative
`of proximity of an external object; and
`a microprocessor adapted to:
`(a) determine whether a telephone call is active;
`(b) receive the signal from the proximity sensor, and
`(c) reduce power to the display if (i) the microprocessor
`determines that a telephone call is active and (ii) the
`signal indicates the proximity of the external object;
`wherein:
`the telephone call is a wireless telephone call;
`the microprocessor reduces power to the display while
`the signal indicates the proximity of the external
`object only if the microprocessor determines that the
`wireless telephone call is active; and
`the proximity sensor begins detecting whether an exter
`nal object is proximate Substantially concurrently
`with the mobile station initiating an outgoing wire
`less telephone call or receiving an incoming wireless
`telephone call.
`2. The mobile station of claim 1, wherein the micropro
`cessor reduces power to the display only if (i) the micro
`processor determines that a telephone call is active and (ii)
`the signal indicates the proximity of the external object.
`3. The mobile station of claim 1, wherein, if (i) the
`microprocessor determines that an incoming telephone call
`arrives at the mobile station and (ii) the signal indicates the
`proximity of the external object, then the incoming tele
`phone call is automatically answered.
`4. The mobile station as recited in claim 1, wherein the
`microprocessor reduces power to the display by turning off
`the display.
`5. The mobile station as recited in claim 1, wherein the
`proximity sensor is a mechanical proximity sensor, an
`optical sensor, or a range-detecting sensor.
`6. The mobile station as recited in claim 1, wherein the
`proximity sensor is located proximate to the display.
`7. The invention of claim 1, wherein, if (i) the micropro
`cessor determines that the incoming wireless telephone call
`arrives at the mobile station and (ii) the signal indicates the
`proximity of the external object, then the incoming wireless
`telephone call is automatically answered without any further
`action by the user.
`8. A method of conserving battery power in a mobile
`Station, comprising:
`detecting whether an external object is proximate;
`determining whether a telephone call is active; and
`reducing power consumption of a display of the mobile
`station if (i) a telephone call is determined to be active
`and (ii) the proximity of the external object is detected;
`wherein:
`the telephone call is a wireless telephone call;
`the power consumption of the display is reduced while the
`proximity of the external object is detected only if the
`wireless telephone call is determined to be active; and
`detecting whether an external object is proximate begins
`substantially concurrently with the mobile station ini
`tiating an outgoing wireless telephone call or receiving
`an incoming wireless telephone call.
`
`

`

`US 7,319,889 B2
`
`5
`9. The method of claim 8, wherein the power consumption
`of the display is reduced only if (i) a telephone call is
`determined to be active and (ii) the proximity of the external
`object is detected.
`10. The method of claim 8, further comprising:
`if (i) an incoming telephone call is determined to arrive at
`the mobile station and (ii) the proximity of the external
`object is detected, then automatically answering the
`incoming telephone call.
`11. The method as recited in claim 8, wherein reducing 10
`power consumption of the display comprises turning off the
`display.
`
`5
`
`6
`12. The method as recited in claim 8, wherein the detect
`ing of the proximity of the external object is performed by
`a mechanical proximity sensor, an optical sensor, or a
`range-detecting sensor.
`13. The method of claim 8, further comprising:
`if (i) the incoming wireless telephone call is determined to
`arrive at the mobile station and (ii) the proximity of the
`external object is detected, then automatically answer
`ing the incoming wireless telephone call without any
`further action by the user.
`
`k
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`UNITED STATES PATENT AND TRADEMARK OFFICE
`CERTIFICATE OF CORRECTION
`
`: 7,319,889 B2
`PATENT NO.
`APPLICATIONNO. : 11/516316
`DATED
`: January 15, 2008
`INVENTOR(S)
`: Norman Goris and Wolfgang Scheit
`
`Page 1 of 1
`
`It is certified that error appears in the above-identified patent and that said Letters Patent is
`hereby corrected as shown below:
`
`On Title page item 56
`
`On page 2, U.S. PATENT DOCUMENTS, replace “2003/0284848 with
`--2006/0284.848--.
`
`Case 1:22-cv-22706-RNS Document 1-19 Entered on FLSD Docket 08/25/2022 Page 11 of 11
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`Signed and Sealed this
`
`Third Day of June, 2008
`
`WDJ
`
`JON. W. DUDAS
`Director of the United States Patent and Trademark Office
`
`