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`USUO6531845I32
`
`{12) UllltEd States Patent
`(10) Patent N0.:
`US 6,531,845 B2
`Kerai et al.
`(45) Date of Patent:
`Mar. 11, 2003
`
`{54) BATTERY CHARGING
`
`(75)
`
`Inventors: Kanji Kerai, London (GB); Kalle
`Tuulos, Turku (Fl)
`
`{73)
`
`Assigncc:
`
`Nokio Mobile Phones Limited, Espoo
`(F1)
`
`Nolice:
`
`Subject to any disclaimer, the term of this
`patenl is exlended or adjusled under 35
`U.S.C. 15403) by 0 days.
`
`App]. No.:
`Fi led:
`
`091864373
`
`May 25., 2001
`Prior Publication limo
`
`us; 200210005107 111 Jan. 1'1, 2002
`
`{30)
`Foreign Application Priority Data
`May 25, 2000
`((111)
`_____________________________________________ 0012945
`
`H01] 7100
`1.11.521? ..............
`(51)
`. 3201107
`{52) 0.3.01.
`
`(58) Field of Search
`.. 3201106, 10?,
`3201‘ | 10
`
`(56)
`
`References Cited
`U5. PATENT DOCUMENTS
`
`S_.3?1_,453 A
`5,592,528 A
`5,8[4_,969 A “‘
`0,08?,8(14 A ‘
`
`121994 Fernandez
`.. 32.03130
`111997 Nelson cl al,
`3241538
`
`9.11998 Banyan;
`3201’112
`7.12000 Suda .......................... 3201106
`
`.
`
`3201131
`912000 Alwaler
`6,118,251 A *
`320.3110
`21200] Yang ......
`6,184,652 RI
`3201139
`212001 Hatular...
`5,184,550 Bl
`
`412001 Matwda 3201115
`5,211,549111
`FOREIGN PMENT DOCUMEN’I‘S
`1005400
`312000
`2 235 '132
`811995
`2 293 283
`311995
`2111120115
`112000
`2(Ilil2ill7'h
`1121110
`200029544
`112000
`2000139032
`512000
`2110155513
`512000
`
`005F11125
`
`_____________ (105111125
`(iiXJH'UZfi
`
`(105191100
`1102111100
`
`............ 110411111122
`
`'
`
`EP
`(1a
`(10
`JP
`.1?
`JP
`JP
`JP
`
`‘ ciled by examiner
`
`Priman' Examiner—Edward ll. Tso
`Assistant Examiner—Pia 'Iibbils
`(74) Attorney, Agent, or Finn—Antonelli, Terry, 81001 81
`Kraus, LLP
`
`(57)
`
`ABSTRACT
`
`A battery charging circuil is described in which power is
`derived from a communications porl such as a USB interface
`(22] and is supplied to a rechargeable batlury of a commu-
`nications device. The communicalions device, which may be
`a mobile radio telephone, can be charged from the power
`supply or internal baltery 01' a laplup computer equipped
`with a USB purl and L‘unnuclcd thereto with a. suitable cable
`[hereby avoiding [he need I'm a use: In cart).r a dedicaled
`batter}r charger for the radio telephone.
`
`44 Claims, 6 Drawing Sheets
`
`
`
`PA_0000290
`
`Huawei V. FISI Exhibit No. 1015 -
`
`1/12
`
`

`

`U.S. Patent
`
`Mar. 11, 2003
`
`Sheet 1 of 6
`
`US 6,531,845 BS!
`
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`KDRIM. MT)
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`PA_0000291
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`Huawei V. FISI Exhibit No. 1015 - 2/12
`
`

`

`U.S. Patent
`
`Mar. 11, 2003
`
`Sheet 2 of 6
`
`US 6,531,845 32
`
`.9
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`PA 0000292
`
`Huawei V. FISI Exhibit No. 1015 - 3/12
`
`
`
`

`

`US. Patent
`
`Mar. 11, 2003
`
`Sheet 3 01'6
`
`US 6,531,845 B2
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`
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`PA_0000293
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`Huawei V. FISI Exhibit No. 1015 - 4/12
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`

`

`US. Patent
`
`Mar. 11,2003
`
`Sheet 4 of6
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`US 6,531,845 B2
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`
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`PA_0000294
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`Huawei V. FISI Exhibit No. 1015 - 5/12
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`

`

`US. Patent
`
`Mar. 11, 2003
`
`Sheet 5 01'6
`
`US 6,531,845 B2
`
`POWER 1 DATA
`
`POWER CONNECTION
`
`DATA CONNECTION
`
`
`
`USB STATUS
`
`OPTIONS
`
`FIG. Ta
`
`CHARGING
`
`CHARGING USB lj
`
`‘\
`
`FIG. 7b
`
`PA_0000295
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`Huawei V. FISI Exhibit No. 1015 - 6/12
`
`

`

`US. Patent
`
`Mar. 11, 2003
`
`Sheet 6 01'6
`
`US 6,531,845 B2
`
`--
`
`34
`
`32
`
`33
`
`INTERNAL
`
`FIG. 8
`
`MAINTAIN POWER
`CONNECTION WHEN
`
`BATTERV’LOVV?
`
`FIG. 9
`
`PA_0000296
`
`Huawei V. FISI Exhibit No. 1015 - 7/12
`
`

`

`US 6,531,845 B2
`
`1
`BATTERY CHARGING
`
`BACKGROUND OF THE. INVENTION
`1. Field of the Invention
`The present invention relates to a battery powered device
`incorporating a communication port, particularly although
`not exclusively a USB interface.
`2. Description of the Prior Art
`Chrstomarily, hand held electronic devices such personal
`digital assistanu; (FDA), and cellular handsets have been
`powered by a rechargeable battery, the term battery being
`intended to encompass a collection ofune or more cells. As
`a consequence, it is necessary for the user of such a device
`to recharge the battery regularly using a dedicated charger,
`always assuming a source of electrical power is publically
`available. Where a user possesses more than one such device
`and perhaps a laptop computer,
`it is necessary to carry a
`corresponding number of chargers. Typically, battery charg-
`ers are heavy, bulky and inconvenient to transport due to
`their trailing leads and connectors. Furthermore, where a
`user is traveling abroad, even should the charger prove
`compatible with the local electrical power supply, a power
`outlet adapter will almost certainly be necessary adding to
`expense and further inconveniencing the user.
`SUMMARY OF THE INVENTION
`
`It is thus an object of the present invention to overcome
`the disadvantages set out above and to further provide a
`device which permits a user to remove the need to carry a
`plurality of chargers and adapters when traveling. It is a still
`further object of the invention to permit the charging of a
`device in the absence of a locally available electrical supply.
`Thus, according to one aspect of the present invention
`there is provided a battery powered device including a
`communications port and a charging circuit connectable to
`a battery, the charging circuit having a further connection to
`the communications port wherein the port, in use, provides
`power to the charging circuit.
`Although the port may include a power line such as is
`found, for example, in a USB port, preferably the Charging
`circuit obtains power from the data andr’or control
`lines.
`Conveniently,
`the connection to the charging circuit
`is
`switched such that the controller or processor may make or
`break the connection in accordance with instructions
`received via a user interface of the device. Such instructions
`could arise from the detection of the onset of a communi-
`cation over the data line in particular where this is a source
`of power. By disconnecting the charging circuit from the
`data line, the capacitance of the line is reduced and the data
`rate of the port is substantially maintained. It may also be
`appropriate to break the connection where an additional
`power supply is connected to a dedicated input
`to the
`charging circuit. By disconnecting the charging circuit from
`the port in such circumstances, the risk of over charging the
`battery is reduced. The device may also include means for
`providing data indicative of the status of a battery connected
`to the battery charger.
`In accordance with a Eunher aspect of the invention. there
`is provided a battery powered device including a commu-
`nications port and a charging circuit connectable to a battery,
`the charging circuit being connected to at least one data
`andr'or control line of said port, whereby power is received
`by said circuit during operation of said at least one line.
`Particularly in the case of a so-called USB communica-
`tions port,
`it
`is possible to deliver power to a battery
`
`it]
`
`15
`
`3E)
`
`40
`
`45
`
`50
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`55
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`I50
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`2
`charging circuit during communication activity between the
`device and a further device connected via suitable cabling
`thereto. Such communication activity may include the trans-
`fer of data anchor control signals. A switch may be provided
`to control the delivery of power to the charging circuit where
`the transmission conditions of the port dictate.
`invention,
`According to another aspect of the present
`there is provided a method of charging a battery powered
`device containing a communications port, said device fur-
`ther including a charging circuit connectable to a battery, the
`method comprising connecting said charging circuit to at
`least one data andfor control line during delivery of data
`a ndr‘or control signals to said port whereby power is supplied
`from said at least one line to the charging circuit.
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`In order to understand more fully the invention, several
`embodiments thereof will now be described by way of
`example and with reference to the accompanying drawings,
`in which:
`
`FIG. 1 is a block diagram illustrating the topology of the
`known USB serial interface;
`FIG. 2 is a block diagram of a battery powered radio
`telephone handset according to the present invention:
`FIG. 3 is a diagrammatic view of a port according to a
`further embodiment of the invention;
`FIG. 4 is a diagrammatic view of a variant of the port of
`FIG. 3;
`FIG. 5 is a diagrammatic view of a further variant of the
`port of FIG. 4;
`FIG. 6 is a diagram showing the radio telephone handset
`of FIG. 2 connected to a laptop computer;
`FIG. 7a is a view of a display of the handset of FIG. 2
`showing a menu of a user interface;
`FIG. 7b is a similar view showing a simplified menu;
`FIG. 8 is a view of a display of the laptop computer of
`FIG. 7 showing a menu of a software application, and
`FIG. 9 is a similar view showing a simplified menu.
`DETAILED DESCRIPTION OF TIIE
`INVENTION
`
`Referring now to FIG. 1 in panicular, there is shown a
`typical bus topology 1 of a well known serial
`interface
`standard, namely the USB interface, details of which may be
`found in the Universal Serial Bus Specification Revision 1.1.
`The USB standard provides that in addition to carrying
`data biidireetionally, a USB cable 2 must also supply
`electrical power unidirectionally. The power and data passes
`through pro-defined terminals or pin-outs provided on a
`standardised plugs 3.4 on each free end 5.6 ofthe U313 cable
`2. The plugs 3,4 are defined in the standard as having
`difl‘erent forms at upstream and downstream ends 7,8. Each
`plug 3,4 can mate only with a complementary shaped
`receptacle or port 9.10 provided in the USB devices 11.12 to
`be connected. Thus, the standard ensures that a cable 2 can
`only be connected to provide power from an upstream port
`9 to a downstream port 10. The USB standard funher
`provides the device 11 may have its own power supply. Such
`a device is known as a self-powered device 11. A device 12
`which relies exclusively on power supplied from the
`upstream device or hub is known as a bus-powered device.
`Device 12 is a bus-powered device. Adevice may provide
`only a function, in which case it is defined asa node and has
`an upstream connection only, or it may be hub to which
`
`PA_0000297
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`
`8/12
`
`

`

`US 6,531,845 B2
`
`5
`
`15
`
`3
`further USB devices (or hubs) may be connected down-
`stream. A hub may also provide a function. The above
`standard further defines a root hub 13 from which all
`downstream connections depend, The root hub 13 forms part
`of a host that is normally a personal computer.
`The USB specification was motivated, at least in part, by
`the desire to integrate telephony with personal computers.
`'l‘hus, FIG. 2 shows a portable radio telephone 14 powered
`by a rechargeable battery pack 15. The telephone 14 includes
`a transceiver 16 and all
`the other features conventionally 10
`found in a cellular telephone, as shown schematically in
`FIG. 2. Since these aspects of the telephone 14 are not
`directly relevant to the present invention. no further details
`will be given here, except to say that a microprocessor 17 is
`employed to control all the basic functions of the telephone
`14 and to control
`the keypad and display functions. The
`telephone 14 also comprises a memory unit 18 for storing
`user defined data such as telephone numbers in a subscriber
`number index, or
`identify codes for telephone banking
`systems. Abattery charger control circuit [9 is also included 20
`in the telephone 14. 'Ihis circuit 19 delivers power to the
`rechargeable battery 15. In a conventional manner, external
`power for supplying charge to the battery 15 is provided via
`a charger jack 20 located in the housing of the telephone.
`the telephone 14 further incorporates a USB interface or 35
`port shown generally as P. The USB interface P comprises
`a connector 22 having data 23, power 24 and ground pins or
`terminals. The connector 22 is provided in the handset
`housing to which a downstream plug of a USB cable is
`connectable in use. A pair of conductors 25,26 carry differ- 3E,
`ential data signals D— and D+ between the data pins 23 of
`the connector 22 and the USB interface ASIC 21 mounted on
`the handset PCB. The interface ASIC 21 is suitably pro-
`grammed to provide the benefits of USB functionality to the
`handset. In addition. ground connection (not shown) is made 35
`from the ground pin of the connector 22 to the PCB.
`A conductor 27. which carries power signals (Vbus) from
`the power pin 24 of the connector 22 to the Interface ASIC
`2‘1, is also connected via a switch 28 in series with a diode
`100 to a conductor 101 connecting the charger jack 2010 the 40
`charger control circuit 19.1'l1e switch 28 is under the control
`of the interface ASIC 21 whilst
`the diode llltl prevents
`power from being supplied in an upstream direction via the
`connector 22, in accordance with the above USB standard.
`It will also be appreciated that
`in addition to the above~ 45
`described connections there will exist further non-illustrated
`connections with and between the above-described compo-
`nents and other circuit elements of the handset 14. These
`additional connections. to the extent that they are directed to
`providing conventional known functions of a radio tele- 50
`phone 14, are not described in further detail.
`In use. a user is able to select, via a menu {see FIG. 7a)
`provided on an otherwise conventional user interface (UI)
`display 34] of the handset 14. one of a number of modes of
`operation of the power and data transfer connections. 55
`However, before the UI pennils these modes to be selected.
`the handset USB connector 22 must be connected via a USB
`cable 2 to a USB hub such as a laptop computer 29. Once
`connected, the interface ASIC 21 detects the presence of a
`USB cable 2 connection to the data terminals th-t’D- 23 and so
`signals this fact via the UI to the user. ’l'he interface ASIC 21
`is also in receipt of a signal indicative of the state of charge
`of the battery 15. Whether the interface ASIC 21 closes the
`switch 28 and thereby connects Vbus to the battery 15 via
`the charging circuit 19 will depend on the mode selected by as
`the user. It is immaterial with respect to the charger control
`circuit 19, what source of power is being used.
`
`4
`In a first mode, both data 23 and power 24 transfer
`connections are enabled. In a second mode the data connec-
`tion 23 only is enabled, although a further feature may be
`operative in this mode in which the charger control circuit 19
`continually monitors the state of the handset battery 15 and
`in the event that the charge falls below an acceptable level
`prompts the user via the UI display 30 to enable the power
`connection 24 to the handset 14 and thereby increase the
`charge of the handset battery 15. In a third (default) mode,
`the power connection 24 only is enabled.
`To facilitate both ease of use and the minimization of any
`changes to the UI software, FIG. 7b shovvs a simplified menu
`ofthe user interface which maybe displayed as an alterna-
`tive to the above described menu on the display 39 of the
`handset 14. This simplified menu provides a single option
`102 of allowing charging of the handset battery 15 via the
`lJSIl connector 22. However, this option is active only when
`a USB connection is present and no power is being supplied
`via the charger jack 20.
`Where the handset 14 is connected to a laptop computer
`29 shown in FIG. 6 via the USB connector 22, as shown in
`FIG. 3. then further functionality may be provided in the
`form of a software application residing on the laptop com-
`puter 29 and utilizing the full capability of the U313 interface
`protocol to communicate with the handset 4 over the USE!
`cable 2. Thus, the application software may, through a
`suitable graphical user interface (GUI) provide control of the
`battery charge and data communication connections with the
`handset. FIG. 3 shown a laptop computer display on which
`a graphical indication 31 of the state of charge of the handset
`battery charge is given. In addition, there are displayed icons
`32,33 indicating that both a data and a power connection
`exist between the handset 14 and the laptop computer 29. A
`further icon 34 indicates that the laptop computer is oper-
`ating on its own internal batteries rather than on publically
`available electrical power. Hence the display further
`includes a bar graph 35 indicative of the state of charge of
`the laptop's own battery. In use, a user may select, using
`conventional point and clock operations with a mouse,
`various options for the supply of power and transfer of data
`with the handset. Most conveniently, the application will
`provide a set ofoperation modes selectable by the user and
`similar to those provided by the handset UI.
`Thus in a
`first mode, both data and power transfer
`connections are enabled but with the safeguard that where
`the laptop computer 29 is detected as operating on internal
`battery power, the power connection is terminated when the
`battery charge of the laptop computer falls below a prese—
`lected level. This feature guards against the laptop computer
`battery becoming completely discharged.
`In a second mode, the data connection only is enabled.
`Although a further feature may be enabled in this mode that
`continually monitors the state of the handset battery 15.
`Consequently,
`in the event that the handset battery charge
`falls below an acceptable level,
`the laptop computer 29
`prorans the user, via a pop—up display, to connect the power
`connection to the handset and thereby increase the charge of
`the handset battery.
`In a third mode. the power connection only is enabled
`although again the feature of preventing discharge of the
`laptop computer battery is provided to end the connection
`when the laptop computer battery charge falls below a
`predetermined level.
`To provide for emergencies where it may be necessary to
`charge the handset battery 15 even at the expense of the
`laptop computer battery, there is further included an override
`
`PA_0000298
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`Huawei V. FISI Exhibit No. 1015 - 9/12
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`

`US 6,531,845 B2
`
`5
`function in each ofthe three modes that maintains the power
`connection. It will be appreciated that the existence of the
`power connection does not imply that power will be con-
`tinuously transferred from the laptop computer. Indeed, the
`charging circuit of the handset continually monitors the
`handset battery 15 and provides a signal indicative of the
`level of charge to the charger control circuit 19. Thus, should
`the handset battery 15 reach a satisfactory level of charge,
`the charger control circuit 19 will cause the switch 28 to
`open preventing further depletion of the laptop computer
`battery and equally preventing overcharging of the handset
`battery.
`Again, where ease of use is required and a minimal
`change to an otherwise conventional UI is desired, then an
`option box 103 (FIG. 9) is generated on the laptop computer
`display. This box provides only the first of the above
`described options in that the only option provided is that of
`maintaining a power connection in an emergency at
`the
`expense of the laptop battery.
`It will be understood from the foregoing that the pro-
`gramming of the various user interfaces is within the ability
`of those skilled in the art and the precise implementation will
`depend to some extent on the hardware.
`Using the same reference numerals to identify corre-
`sponding elements, FIGS. 3, 4 and 5 respectively illustrate
`a further embodiment of the invention and two variants
`thereof.
`In FIG. 3, there is shown a serial port 1’ of a
`battery-powered handset 14. Apair of data terminals 23 are
`connected internally to the interface ASIC 21 by conductors
`25,26 and are also oonnectable. via suitable cabling, to a
`serial port (not shown) of a laptop computer for example.
`Each conductor 25,26 is tapped, via a switch 28,
`to a
`respective logic detector 50. The switches 28 are operable
`under the condition of the interface ASIC 21. Aconnection
`from the output of each detector 50 is made to a correspond-
`ing reservoir capacitor 51. The capacitors 51 themselves are
`connected in parallel and supply a power or charging ter-
`minal 52 via a diode 100 with current of some tens of
`milliamps at a typical voltage of around five volts, The
`charging terminal 52 is connected to the battery charging
`circuit 19 as previously described above.
`In use, the data terminals 23 are connected via suitable
`cabling to a communications port of another device such as
`a laptop computer, for example. As is well known, the data
`lines of a serial connection are held high when the connec-
`tion is inactive and will vary between a high and low state
`whilst communication over the ports takes place. Thus. each
`logic detector 50 detects the state of a corresponding line
`25,26 and, where the state is found to be high, permits
`current to flow into a corresponding capacitor 51. The output
`from each capacitor 50 supplies the charging terminal 52
`which is connected to the battery charging circuit 19. In
`order to disable the supply of current
`to the charging
`terminal 52. the switches 28 may be opened at the command
`of the interface ASIC 21. Aside from reasons set out above
`in relation to the U] of the handset 14, such a step may be
`necessary if the additional capacitance 52 is having a
`detrimental effect on the data rate of the port P.
`In a variant of the embodiment shown in FIG. 4, rather
`than using the data lines 25.26 to supply power to the
`charging circuit 19 the control lines 53 are utilised instead.
`Such an arrangement is possible where XOND'KOPF logic,
`for example, is being employed to control communication
`over the data lines 25.26 of the port I’. [n which case, the
`control lines 53 are redundant. Consequently, the logic state
`ofthese lines 53 can be held high and they can then be used
`
`it]
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`to supply a charging terminal 52 with current. Furthermore.
`the presence of additional capacitance in the control lines 53
`should not have any detrimental effect on the data rate over
`the data lines 2526. Nevertheless, to enable charging to be
`placed under software wntrol, a switch 28 controlled by the
`interface ASIC 21 is provided. The provision of switching
`for the control lines is advantageous in that it the capacitance
`mentioned above can be temporarily removed during a
`communications session where the control lines are utilised.
`FIG. 5. shows a further variant of the further embodiment
`in which a parallel port 6|] of an external device such as a
`laptop computer 29 is used to communicate with a serial port
`P of the communications device. A parallel connector 22 on
`the handset 14 provides conneetions to an external parallel
`cable 61 of which two lines carry received and transmitted
`data 62,63 respectively to the parallel port 60 of the laptop
`29. The remaining lines 53 of the cable 61 are unused and
`are thus held high in accordance with usual practice. Internal
`connections 25,26 from the connector 22 are made to a
`parallel
`to serial conversion block 64 in which parallel
`communication signals received from the external device 29
`are translated to serial signals and vice versa for signals
`transmitted from the handset 14. The conversion block 64
`includes a number of [Cs (not shown) which are supplied
`with power from the power terminal 52 connected to the
`reservoir capacitors 51 supplied by the unused datafcorttrol
`lines 53 in the manner described previously. In addition, the
`power from the terminal 52 is used to supply the battery
`charging circuit 19 of the handset 14.
`It will be recognized that although the further embodi—
`ment and its variants differ in the manner in which power is
`derived from the port for charging the battery. it is within the
`ability of those skilled in the art to adapt the user interface
`(UI) described in relation to the first embodiment.
`Furthermore, it will be appreciated that the approach set out
`in the further embodiment and its variants to deriving power
`from the data andr’or control lines could be used to supple-
`ment the power obtained front a dedicated power line such
`as that described in relation to the first embodiment. Finally.
`although the foregoing embodiman have illustrated the
`invention in the context of mobile station such as a handset.
`the invention could, of course, be applied to any battery
`powered device having a charging circuit and a communi—
`cation port such as a handheld computer console, a bar code
`reader and data capture device or the like.
`What is claimed is:
`l. A battery powered apparatus comprising:
`a charging circuit for charging a rechargeable battery;
`a processor for controlling the battery operated apparatus
`and for communicating with an external electronic
`device including an electrical power supply;
`least one conductor for connection to the external
`electronic device which receives data or control signals
`including when the charging circuit charges the
`rechargeable battery;
`3 user input for receiving a user command;
`means for determining if charging the rechargeable bat-
`tery using the electrical power supply of the external
`electronic device is allowed, based on the user com-
`mand; and wherein
`the charging circuit receives electrical power from the
`electrical power supply of the external electronic
`device through the at
`least one conductor and
`charges the battery with the received electrical power
`if the charging of the rechargeable battery using the
`electrical power supply of the external electronic
`device is allowed.
`
`at
`
`PA_0000299
`
`Huawei V. FISI Exhibit No. 1015 - 10/ 12
`
`

`

`US 6,531,845 B2
`
`7
`2. A battery operated apparatus according to claitn 1
`wherein:
`the means for determining if charging the rechargeable
`battery using the electrical powersupply eflbe exlerr‘tal
`electronic device is allowed uses the received data or
`control signals as a basis for the determination.
`3. A battery operated apparatus according to claim 2.
`comprising:
`a switch operable to disconnect the charging circuit from
`the electrical power supply.
`4. A battery operated apparatus according to claim 3,
`wherein:
`the at least one conductor comprises a universal serial bus
`port.
`5. A battery operated apparatus according to claim 2,
`wherein:
`the at least one conductor comprises a universal serial bus
`port.
`6. A battery operated apparatus to claim 1, comprising:
`the user input is a user interface [or receiving the user
`command; and wherein
`the means for determining if charging the rechargeable
`battery using the electrical power supply of the
`external electronic device is allowed uses the user
`interface during the determination if charging is
`allowed.
`7. A battery operated apparatus according to claim 6,
`comprising:
`a switch operable to disconnect the charging circuit from
`the electrical power supply.
`8. A battery operated apparatus according to claim 7,
`wherein:
`the at least one conductor comprises a universal serial bus
`port.
`9. A battery operated apparatus according to claim 6,
`wherein:
`the at least one conductor comprises a universal serial bus
`port.
`It]. A battery operated apparatus according to claim 1.
`wherein:
`the at least one conductor comprises at least one electrical
`power line conductor and the received electrical power
`is derived from the external electronic device through
`the at least one electrical power line conductor and the
`charging of the battery with the received electrical
`power is derived from the at least one electrical power
`line conductor.
`11. A battery operated apparatus according to claim 10.
`wherein:
`the charging circuit comprises a connector which provides
`an electrical connection with the electrical power sup-
`1
`.
`12.?Ay battery operated apparatus according to claim 11,
`comprising:
`a switch operable to disconnect the charging circuit from
`the electrical power supply.
`13. A battery operated apparatus according to claim 12,
`wherein:
`the at least one conductor comprises a universal serial bus
`ort.
`MFA battery operated apparatus according to claim 11,
`wherein:
`the at least one conductor comprises a universal serial bus
`port.
`15. A battery operated apparatus according to claim 10,
`comprising:
`
`10
`
`15
`
`Mu
`
`30
`
`4O
`
`45
`
`50
`
`55
`
`I50
`
`65
`
`8
`a switch operable to disconnect the charging circuit from
`the electrical power supply.
`16. A battery operated apparatus according to claim 15,
`wherein:
`the at least one conductor comprises a universal serial bus
`port.
`17. A battery operated apparatus according to claim 10.
`wherein:
`
`the at least one conductor comprises a universal serial bus
`port.
`18. A battery operated apparatus according to claim 1.
`comprising:
`a switch operable to disconnect the charging circuit from
`the electrical power supply.
`19. A battery operated apparatus according to claim 18.
`wherein:
`the at least one conductor comprises a universal serial bus
`port.
`20. A battery operated apparatus according to claim I,
`wherein:
`
`at
`
`the at least one conductor comprises a universal serial bus
`port.
`21. A battery powered apparatus comprising:
`a charging circuit for charging a rechargeable battery;
`a processor which controls the battery operated apparatus
`and communicates with an external electronic device
`including an electrical power supply;
`least one conductor for connection to the external
`electronic device which conducts data or control sig—
`nals from the external electronic device when the
`charging circuit is charging the rechargeable battery;
`and wherein
`the charging circuit derives electrical power from the
`data or control signals conducted on the at least one
`conductor from the external electronic device for
`charging the rechargeable battery.
`22. A battery operated apparatus according to claim 21.
`wherein:
`
`the charging circuit comprises means for providing elec-
`trical power from the data or control signals conducted
`on the at least one conductor from the external elec—
`tronic device to the rechargeable battery.
`23. A battery operated apparatus according to claim 22
`wherein the means for obtaining electrical power comprises:
`at least one capacitor.
`24. A battery operated apparatus according to claim 23
`wherein:
`
`the at least one conductor comprises a universal serial bus
`port.
`25. A battery operated apparatus according to claim 24
`comprising:
`means for determining if charging the rechargeable bat-
`tery using the electrical power supply of the external
`electronic electronics device is allowed which uses
`received data or control signals as a basis for the
`determination.
`26. A battery operated apparatus according to claim 24.
`wherein:
`the at least one conductor comprises at least one electrical
`power line conductor and the received electrical power
`is derived from the external electronic device through
`the at least one electrical power line conductor and the
`charging of the battery with the received electrical
`power is derived from the at least one electrical power
`line conductor.
`
`PA_0000300
`
`Huawei V. FISI Exhibit No. 1015 - 11/12
`
`

`

`US 6,531,845 B2
`
`9
`27. A battery operated apparatus according to claim 23
`comprising:
`means for determining if charging the rechargeable bat-
`tery using the electrical power supply at. the external
`electronic electronic; device is allowed which uses
`received data or control signals as a basis for the
`determination.
`28. A battery operated apparatus according to claim 23,
`wherein:
`the at least one conductor comprises at least one electrical
`power line conductor and the received electrical power
`is derived from the external electronic device through
`the at least one electrical power line conductor and the
`charging of the battery with the received electrical
`power is derived from the at least one electrical power
`line conductor.
`29. A battery operated apparatus according to claim 23,
`comprising:
`a switch operable to disconnect the charging circuit from
`the electrical powur supply.
`311A battery operated apparatus according to claim 22
`wherein:
`the at least one conductor comprises a universal serial bus
`port.
`31. A battery operated apparatus according to claim 30
`comprising:
`means for determining if charging the rechargeable bat»
`tery using the electrical power supply of the external
`electronic electronic; device is allowed which uses
`received data or control signals as a basis for the
`determination.
`32. A battery operated apparatus according to claim 30,
`wherein:
`
`the at least one conductor comprises at least one electrical
`power line conductor and the received electrical power
`is derived from the external electronic device through
`the at least one electrical power line conductor and the
`charging of the battery with the received electrical
`power is derived from the at least one electrical power
`line conductor.
`33. A battery operated apparatus according to claim 30,
`comprising:
`a switch operable to disconnect the charging circuit from
`the electrical power supply.
`34. A battery operated apparatus according to claim 22
`comprising:
`means for