—0
`
`Please type a plussign(+) inside this box ——>
`
`,
`
`Zn
`25
`—=
`PTO/SBI16 (02-01) —
`> BSS =
`Approved for use through10/31/2002 OMB 0651-00324 —_
`—==n
`.
`US. Patent and Trademark Office, U.S. DEPARTMENT OF COMMERCE,
`——
`=
`-_ = 5 Underthe Paperwork Reduction Act of 1995, no persons are required to respond to a collection of informaton unless it displays a valid OMB control number. Oo —s
`——
`Los =
`=—
`PROVISIONAL APPLICATION FOR PATENT COVER SHEET
`22 =e
`This is a requestforfiling a PROVISIONAL APPLICATION FOR PATENT under 37 CFR 1.53(c). =>
`Express Mail Label No.
`OO =e)
`
`42 INVENTOR(S)
`
`
`Specification NumberofPages
`Drawing(s) Number of Sheets [4
`[} Application Data Sheet. See 37 CFR 1.76
`METHOD OF PAYMENTOFFILING FEES FOR THIS PROVISIONAL APPLICATION FOR PATENT
`Applicant claims small entity status. See 37 CFR 1.27.
`A check or moneyorderis enclosed to coverthefiling fees
`The Commissioneris hereby authorized to chargefiling
`160.00
`50-1995
`fees or credit any overpaymentto Deposit Account Number:
`
`a
`Paymentby credit card. Form PTO-2038is attached.
`The invention was made by an agency of the United States Governmentor under a contract with an agency of the
`United States Government.
`No.
`
`Given Name(first and middle[if any])
`
`Family Narne or Surname
`
`Residence
`and either State or Foreign Coun!
`
`City
`
`Daniel M.
`Dan G.
`Michael F.
`
`Fischer
`Radut
`Habicher
`
`Waterloo, CANADA
`Waterloo, CANADA
`Cambridge, CANADA
`
`Additional inventors are being named on the 1_ separately numbered sheets attached hereto
`TITLE OF THE INVENTION (280 characters max.
`MULTIFUNCTIONAL CHARGER SYSTEM AND METHOD
`
`Direct all correspondence to:
`
`CORRESPONDENCE ADDRESS
`
`L
`
`O
`
`R
`
`— BarCode Label here
`
`Firm or
`
`Type Customer Number here
`.
`‘
`Krishna K. Pathiyal, Esq.
`
`Research In Motion Limited
`
`295 Phillip Street
`
`[| CD(s), Number [|
`Other (specify)
`Powerof Attorney
`
` 5
`
`=4
`
`N2L 3W8
`
`
`
`|County CCANADA Telephone|(519)888-7465| Fax_|(519)888-1975
`
`FILING FEE
`BMOUNT
`
`ent contract number are:
`OJ Yes, the name of the U.S. Government agency
`
`
`Respectfully submitted,
`Ef
`_
`22/10/01
`
`SIGNATURE
`;
`=
`REGISTRATION NO.
`TYPEDor PRINTED NAME
`
`ahili
`Docket Number.
`TELEPHONE
`(619) 888-7465 (Ext 2535
`
`USE ONLY FORFILING A PROVISIONAL APPLICATION FOR PATENT
`This collection of information is required by 37 CFR 1.51. The information is used by the public to file (and by the PTO to process) a
`provisional application. Confidentiality is governed by 35 U.S.C. 122 and 37 CFR 1.14. This collection Is estimated to take 8 hours to
`complete, including gathering, preparing, and submitting the complete poo application to the PTO. Time will vary
`depending upon
`
`the individual case. comments ontheamountoftime you requiretocomplete this form and/or suggestions for reducing this burden,
`should be sent to the Chief Information Officer, U.S. Patent and Trademark Office, U.S. Department of Commerce, Washington, D.C.
`20231. DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS. SEND TO: Box Provisional Application, Assistant
`Commissioner for Patents, Washington, D.C. 20231.
`
`Krishna K.Pathlyal,Esq.
`
`850-001
`
`ZTE/SAMSUNG 1004-0001
`ZTE/SAMSUNG 1004-0001
`IPR2018-00110
`IPR2018-00110
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`

`

`
`
`
`
`Given Name(first and middle[if an
`
`Jonathan T.
`
` Quang A.
`
`PROVISIONAL APPLICATION COVER SHEET
`Additional Page
`
`INVENTOR(S)/APPLICANT(S)
`
`Family or Sumame
`Luong
`Malton
`
`
`
`
`PTO/SB/16 (02-01)
`Approved for use through 10/31/2002. OMB 0651-0032
`U.S. Patent and Trademark Office; US DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unlessit disp lays a valid OMS control number.
`
`
`850-001
`insidethis = at a
`Type a
`plus sign (+
`
`
`
`
`and either State or Foreign Coun
`City
`Kitchener, CANADA
`
`Kitchener, CANADA
`
`TernBallsass!
`
`agte
`rE
`is:
`
`
`
`Number
`
`_1
`
`of
`
`J
`
`WARNING:Information on this form may becomepublic. Credit card information should not
`be included onthis form. Provide credit card information and authorization on PTO-2038.
`
`ZTE/SAMSUNG 1004-0002
`ZTE/SAMSUNG 1004-0002
`IPR2018-00110
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`

`

`VIA COURIER
`
`BOX PROVISIONAL APPLICATION
`Assistant Commissioner for Patents
`Washington, D.C. 20231
`USA
`
`October 22, 2001
`
`Dear Sir:
`
`Re:
`
`NEW PROVISIONALPATENT APPLICATION
`Inventor(s):
`Daniel M. Fischer; Dan G. Radut; Michael F. Habicher; Quang A. Luong;
`Jonathan Malton
`MULTIFUNCTIONAL CHARGER SYSTEM AND METHOD
`850-001
`
`Title:
`Our Ref:
`
` Enclosed in connection with this new provisionalpatent application are the following:
`
`
`
`(1) Provisional Application for Patent Cover Sheet
`(including fee payment and method)
`(2) Fee Transmittal Sheet
`(3) Specification
`(4) Drawing(s)
`(5) Power of Attorney
`(6) Receipt Card
`
`Number of Pages
`2
`
`No. of Figures:
`
`4
`
`maikee
`
`Payment ofFees:
`
`In sum,please charge the following fees to our deposit account as indicated on the Cover Sheet:
`
`Filing fee of $160.00
`
`Yours very truly, LO
`
`
`
`
`
`Krishna K. Pathiyal
`Patent Agent
`
`Encl.
`
`Research In Motion Limited 295 Phillip Street, Waterloo, Ontario N2L 3W8 Canada tel
`
`+1 (519) 888-7465 fax +1 (519) 888-6990 web wawnm net
`
`ZTE/SAMSUNG 1004-0003
`ZTE/SAMSUNG 1004-0003
`IPR2018-00110
`IPR2018-00110
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`

`

`Multifunctional Charger System and Method
`
`CROSS-REFERENCE TO RELATED APPLICATION
`
`This application is related to the following prior application: System and
`
`Method for Adapting a USB to Provide Power for Charging a Mobile Device,
`
`United States Provisional Application No. 60/273021, filed March 1*, 2001. This
`
`prior application, including the entire written description and drawing figures, is
`
`hereby incorporated into the present application by reference.
`
`10
`
`BACKGROUND
`
`L.
`
`FIELD OF THE INVENTION
`
`This invention relates generally to power adapters and battery chargers.
`
`More particularly, the invention provides a USB (Universal Serial Bus) power
`
`adapter and battery charger for charginga first battery at a mobile device and a
`
`15
`
`second battery at the charger simultaneously or independently. The invention is
`
`particularly well
`
`suited for use
`
`in Personal Digital Assistants, mobile
`
`communication devices,
`
`cellular phones,
`
`and wireless
`
`two-way e-mail
`
`communication devices, which may have a USBinterface (collectively referred to
`
`herein as "mobile devices"). The invention provides utility, however,
`
`in any
`
`20
`
`device that may need to draw power via the USB interface and/or has a
`
`rechargeable battery.
`
`ZTE/SAMSUNG 1004-0004
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`

`2.
`
`DESCRIPTION OF THE RELATED ART
`
`Supplying powerto a mobile device involves the participation of a mobile
`
`device on one hand, as well as the participation of a power source onthe other.
`
`On one hand, most mobile devices provide a first power interface for
`
`receiving power from a powersource, for instance to recharge a battery, and a
`
`second data interface for communicatingthat is separate from the powerinterface.
`
`Although it is desirable to have a combined power and data interface, most
`
`combinedinterfaces are non-standard so that one mobile device provided by one
`
`manufacturer with one combined interface cannot cooperate with the combined
`
`interfaces of other manufacturers.
`
`Furthermore, many mobile devices now have USB (Universal Serial Bus)
`
`interfaces for communicating, although they still maintain a separate power
`
`interface, such as a barrel connector, for receiving power.
`
`However, a USB chargeable mobile device provided according to System
`
`and Method for Adapting a USB to Provide Power for Charging a Mobile Device,
`
`United States Provisional Application No. 60/273021, filed March 1*, 2001, has a
`
`single USBinterface for both communicating and recharging a battery. Given that
`
`USB connectors are popular widely supported in industry, a USB chargeable
`
`device solves the problem of the combined interface at a USB chargeable mobile
`
`device.
`
`ZTE/SAMSUNG 1004-0005
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`

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`On the other hand, traditional USB power source devices, such as hubs
`
`andhosts, require that a USB device participate in a host-initiated process called
`
`enumeration in order to be compliant with the current USB specification in
`
`drawing power from the USB interface. Although a USB chargeable device is
`
`capable of enumeration, it is preferable in some situations, such as when a host is
`
`not available, as often happens during normal use of a mobile device, to be able to
`
`adapt alternate power sources such as conventional AC outlets and DC car
`
`sockets, to supply power to a USBdevice via a USBinterface.
`
`There is a need for a USB poweradapter that can provide power to a USB
`
`10
`
`device without necessarily requiring that
`
`the USB device participate in
`
`enumeration before drawing 5 unit loads of power over a USBinterface.
`
`Furthermore, there is a need for a methodthat can allow a USB device to
`
`differentiate between the provided USB poweradapterand traditional USB power
`
`sources suchas hosts and hubs.
`
`15
`
`Further yet, there is a need for a USB charger device that can charge a
`
`battery while providing power as a USB adapter to a USB device.
`
`Furtherstill, there is a need for a travel kit to assist a user in adapting
`
`various conventional power sources for use with a USB power adapter or USB
`
`charger.
`
`20
`
`SUMMARY
`
`ZTE/SAMSUNG 1004-0006
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`It is an object of the present invention to provide a USB poweradapter
`
`that can provide power to charge a USB chargeable device via the device USB
`
`interface.
`
`It is another object of the present invention to provide a method that can
`
`be practiced at a USB device to differentiate between a USB poweradapter and
`
`traditional USB hosts and hubs.
`
`It is yet another object of the present invention to provide a USB charger
`
`that can charge a battery while providing power as a USB adapter to a USB
`
`device.
`
`aea"MhaaaltMass
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`adapt various conventional powersources for use with a USB power supply.
`
`Further features of the invention will be described or will become apparent
`
`in the course of the following detailed description.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`15
`
`In orderthat the invention may be more clearly understood, the preferred
`
`embodiment thereof will now be described in detail by way of example, with
`
`reference to the accompanying drawings, in which:
`
`Fig. 1 is a block diagram of a USB chargeable mobile device with which
`
`the instant invention may cooperate;
`
`ZTE/SAMSUNG 1004-0007
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`Fig. 2 showsafirst exemplary embodiment of a USB power adapter that
`
`adapts various power sources to power the device of Fig. 1, according to the
`
`present invention;
`
`Fig. 3 is a flow diagram showing an exemplary method ofdifferentiating
`
`between a USB poweradapter andtraditional USB hosts and hubs, according to
`
`the present invention; and
`
`Fig. 4 shows a second exemplary embodiment of a USB poweradapter in
`
`the form of a USB chargerthat charges a battery while adapting various power
`
`sources to powerthe device of Fig. 1, according to the present invention.
`
`10
`
`The same reference numerals are used in different figures to denote
`
`similar elements.
`
`DETAILED DESCRIPTION
`
`Fig. 1 is a block diagram of a USB chargeable mobile device 10 with
`
`15
`
`whichthe instant invention may cooperate. The mobile communication device 10
`
`is preferably a two-way communication device having at least voice or data
`
`communication capabilities. The device preferably has
`
`the capability to
`
`communicate with other computer systems on the Internet. Depending on the
`
`functionality provided by the device, the device may be referred to as a data
`
`20
`
`messaging device, a two-way pager, a cellular telephone with data messaging
`
`aAekMhoeelt
`HhrassyMessrsWaltFI
`
`ZTE/SAMSUNG 1004-0008
`ZTE/SAMSUNG 1004-0008
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`

`

`capabilities, a wireless Internet appliance or a data communication device (with or
`
`without telephony capabilities).
`
`Where the device 10 is enabled for two-way communications, the device
`
`will
`
`incorporate a communication subsystem 11,
`
`including a receiver 12, a
`
`transmitter 14, and associated components such as one or more, preferably
`
`embeddedorinternal, antenna elements 16 and 18, local oscillators (LOs) 13, and
`
`a processing module such as a digital signal processor (DSP) 20. As will be
`
`apparentto those skilled in the field of communications, the particular design of
`
`the communication subsystem 11 will be dependent upon the communication
`
`network in which the device is intended to operate. For example, a device 10
`
`destined for a North American market may include a communication subsystem
`
`11 designed to operate within the Mobitex™ mobile communication system or
`
`DataTAC™ mobile communication system, whereas a device 10 intended for use
`
`in Europe may incorporate
`
`a General Packet Radio Service
`
`(GPRS)
`
`communication subsystem 11.
`
`Network access requirements will also vary depending upon the type of
`
`network 19. For example, in the Mobitex and DataTAC networks, mobile devices
`
`such as 10 are registered on the network using a unique personalidentification
`
`numberor PIN associated with each device. In GPRS networks however, network
`
`access is associated with a subscriber or user of a device 10. A GPRS device
`
`therefore requires a subscriber identity module (not shown), commonly referred to
`
`ZTE/SAMSUNG 1004-0009
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`as a SIM card, in order to operate on a GPRS network. Without a SIM card, a
`
`GPRSdevice will not be fully functional. Local or non-network communication
`
`functions (if any) may be operable, but the device 10 will be unable to carry out
`
`any functions involving communications over network 19. When required
`
`5
`
`network registration or activation procedures have been completed, a device 10
`
`may send and receive communication signals over the network 19. Signals
`
`received by the antenna 16 through a communication network 19 are input to the
`
`receiver 12, which may perform such common receiver functions as signal
`amplification, frequency down conversion, filtering, channel selection and the
`
`10
`
`like, and in the example system shown in Fig. 1, analog to digital conversion.
`
`Analog to digital conversion of a received signal allows more complex
`
`communication functions such as demodulation and decoding to be performedin
`
`the DSP 20.
`
`In a similar manner, signals to be transmitted are processed,
`
`including modulation and encoding for example, by the DSP 20 and inputto the
`
`15
`
`transmitter 14 for digital to analog conversion, frequency up conversion,filtering,
`
`amplification and transmission over the communication network 19 via the
`
`antenna 18.
`
`The DSP 20 not only processes communication signals, but also provides
`
`for
`
`receiver and transmitter control. For example,
`
`the gains applied to
`
`20
`
`communication signals in the receiver 12 and transmitter 14 may be adaptively
`
`controlled through automatic gain control algorithms implemented in the DSP 20.
`
`ZTE/SAMSUNG 1004-0010
`ZTE/SAMSUNG 1004-0010
`IPR2018-00110
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`The device 10 preferably includes a microprocessor 38 which controls the
`
`overall operation of the device. Communication functions, including at least data
`
`and voice communications, are performed through the communication subsystem
`
`11. The microprocessor 38 also interacts with further device subsystems such as
`
`the display 22, flash memory 24, random access memory (RAM) 26, auxiliary
`
`input/output
`
`(I/O) subsystems 28, USB port 30, keyboard 32, speaker 34,
`
`microphone 36, a short-range communications subsystem 40 and any other device
`
`subsystems generally designated as 42. Of particular
`
`interest
`
`is charging
`
`subsystem 44, which is connected to powersource 46 and battery 48. Charging
`
`subsystem 44 provides powerto device 10, preferably from battery 48. However,
`whenbattery 48 becomesdepleted, power source 46 is used to charge battery 48,
`
`and optionally power device 10. Power source 46 preferably obtains power from
`
`USB port 30.
`
`Someof the subsystems shownin Fig. 1 perform communication-telated
`
`functions, whereas other subsystems may provide “resident” or on-device
`
`functions. Notably, some subsystems, such as keyboard 32 and display 22 for
`
`example, may be used for both communication-related functions, such as entering
`
`a text message for transmission over a communication network, and device-
`
`resident functions such as a calculatorortasklist.
`
`Operating system software used by the microprocessor 38 is preferably
`
`stored in a persistent store such as flash memory 24, which mayinstead be a read
`
`ZTE/SAMSUNG 1004-0011
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`

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`
`
`
`aaaa"HeasyHaassTentia
`
`a
`
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`
`only memory (ROM)or similar storage element (not shown). Those skilled in the
`
`art will appreciate that the operating system, specific device applications, or parts
`
`thereof, may be temporarily loaded into a volatile store such as RAM 26.It is
`
`contemplated that received communication signals may also be stored to RAM
`
`26.
`
`The microprocessor 38,
`
`in addition to its operating system functions,
`
`preferably enables execution of software applications on the device. A
`
`predeterminedset of applications which control basic device operations, including
`
`at least data and voice communication applications for example, will normally be
`
`10
`
`installed on the device 10 during manufacture. A preferred application that may
`
`be loaded onto the device may be a personal
`
`information manager (PIM)
`
`application having the ability to organize and manage data items relating to the
`
`device user such as, but not limited to e-mail, calendar events, voice mails,
`
`appointments, and task items. Naturally, one or more memory stores would be
`
`15
`
`available on the device to facilitate storage of PIM data items on the device. Such
`
`PIM application would preferably have the ability to send and receive data items,
`
`via the wireless network. In a preferred embodiment, the PIM data items are
`
`seamlessly integrated, synchronized and updated, via the wireless network, with
`
`the device user’s corresponding data items stored or associated with a host
`
`20
`
`computer system thereby creating a mirrored host computer on the mobile device
`
`with respect to the data itemsat least. This would be especially advantageous in
`
`ZTE/SAMSUNG 1004-0012
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`the case where the host computer system is the mobile device user’s office
`
`computer system. Further applications may also be loaded onto the device 10
`
`through the network 19, an auxiliary I/O subsystem 28,serial port 30, short-range
`
`communications subsystem 40 or any other suitable subsystem 42, and installed
`
`by a user in the RAM 26 orpreferably a non-volatile store (not shown) for
`
`execution by the microprocessor 38. Such flexibility in application installation
`
`increases the functionality of the device and may provide enhanced on-device
`
`functions, communication-related functions, or both. For example,
`
`secure
`
`communication applications may enable electronic commerce functionsandother
`
`10
`
`suchfinancial transactions to be performed using the device 10.
`
`In a data communication mode, a received signal such as a text message or
`
`web page download will be processed by the communication subsystem 11 and
`
`input to the microprocessor 38, which will preferably further process the received
`
`signal for output to the display 22,or alternatively to an auxiliary I/O device 28.
`
`15
`
`A user of device 10 may also compose data items such as email messages for
`
`example, using the keyboard 32, which is preferably a complete alphanumeric
`
`keyboard or telephone-type keypad,
`
`in conjunction with the display 22 and
`
`possibly an auxiliary I/O device 28. Such composed items may then be
`
`transmitted over a communication network through the communication subsystem
`
`20
`
`11.
`
`*
`
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`10
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`ZTE/SAMSUNG 1004-0013
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`For voice communications, overall operation of
`
`the device
`
`10 is
`
`substantially similar, except that received signals would preferably be outputto a
`
`speaker 34 and a microphone 36 would generate signals for transmission.
`
`Alternative voice or audio I/O subsystems such as a voice message recording
`
`subsystem may also be implemented on the device 10. Although voice or audio
`
`signal output is preferably accomplished primarily through the speaker 34, the
`
`display 22 may also be used to provide an indication of the identity of a calling
`
`party,
`
`the duration of a voice call, or other voice call related information for
`
`example.
`
`10
`
`A.
`
`short-range communications
`
`subsystem 40 is a further optional
`
`component which may provide for communication between the device 24 and
`
`different systems or devices, which need not necessarily be similar devices. For
`
`example, the subsystem 40 mayinclude an infrared device and associated circuits
`
`and components or a Bluetooth™ communication module to provide for
`
`15
`
`communication with similarly-enabled systems and devices.
`
`The USB port 30 in Fig. 1 would normally be implementedin a personal
`
`digital assistant (PDA)-type communication device for which synchronization
`
`with a user’s desktop computer (not shown) may be desirable. Such a port 30
`
`would enable a user to set preferences through an external device or software
`
`20
`
`application and would extend the capabilities of the device by providing for
`
`information or software downloadsto the device 10 other than through a wireless
`
`11
`
`ZTE/SAMSUNG 1004-0014
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`

`communication network. The alternate download path may for example be used to
`
`load an encryption key onto the device through a direct and thus reliable and
`
`trusted connection to thereby enable secure device communication. Preferably the
`
`data and power connector 47 is used to receive power and data from power/data
`
`source 46, directing the data to/from USB port 30, and the power to charging
`
`subsystem 44, so that charging subsystem 44 can recharge battery 48. Software on
`
`device 10 preferably reports charging status information to the user.
`
`Charging subsystem 44 is a componentthat provides powerfor the device
`
`10 and different subsystems or devices. For example, the charging subsystem 44
`
`10
`
`may determine the presence of battery 48 and associated powercircuits, such as
`
`Bs)
`
`ieoeaerafeeWet
`3°a7StAlaa!
`
`an AC adaptor, USB bus, or car adaptor which alternatively act as power sources
`
`46 to provide power for the device and to charge battery 48. Additionally,
`
`charging subsystem 44 may determine the absence of power source 46, and
`
`consequently power device 10 from battery 48. When the battery 48 powers
`
`15
`
`device 10, the battery 48 is said to be in a discharging state. Conversely, when
`
`charging subsystem 44 charges battery 48, the battery is said to be in a charging
`
`state. Charging operation is described in detail
`
`in System and Method for
`
`Adapting a USB to Provide Power for Charging a Mobile Device, United States
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`Provisional Application No. 60/273021, filed March 1“, 2001.
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`20
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`Manyalternatives to device 10 may cooperate with the instant invention,
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`although the preferred device 10 has been fully described. Preferably, an
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`ZTE/SAMSUNG 1004-0015
`ZTE/SAMSUNG 1004-0015
`IPR2018-00110
`IPR2018-00110
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`alternative to device 10 has at least a USB connector 47 in order to draw powerin
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`cooperation with the instant invention. Optionally, an alternative to device 10 may
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`also have a rechargeable battery that may be charged in cooperation with the
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`instant invention. Furthermore, an alternative to device 10 may also carry out the
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`method of Fig. 4 so as to remain backwards compatible with traditional USB
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`power-sourcing devices, such as hosts or hubs.
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`Fig. 2 shows an exemplary embodiment of a USB poweradapter 100 that
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`adapts various power sources 60 to power the device 10 of Fig. 1. Using power
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`supplied via USB connector 47, USB device 10 chargesa first battery, contained
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`10
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`in the device.
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`The flow of power will be described first, followed by the flow of data.
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`Power flows form power socket 60N into a plug adapter 58N of USB power
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`adapter 100. The plug adapter 58N is one of many 58N,58D,58B provided in a
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`travel kit to facilitate adapting power from various power sockets 60N,60D,60B.
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`15
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`The plug adapters are mechanically compatible with plug unit 56 so that any one
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`of the various power sockets can act as a power source for power supply 50,
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`which receives power from plug unit 56.
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`Powersupply 50 provides power to USB device 10 via USB connectors 52
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`of USB adapter 100 and 47 of USB device 10. In this regard, USB power adapter
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`20
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`100 adapts power source 60, in this case any one of a plurality of AC power
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`sockets including 60D,N,B to power device 10.
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`ZTE/SAMSUNG 1004-0016
`ZTE/SAMSUNG 1004-0016
`IPR2018-00110
`IPR2018-00110
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`

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`Power flows out of adapter 100 via USB connector 52, on the Vbus and
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`Gndlines to USB connector 47 in USB device 10. Preferably, power distribution
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`and charging subsystem 44 selectively uses power on the Vbus and Gndlines of
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`USB connector 47 to optionally power device 10, and chargefirst battery 48A via
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`battery terminals 54A. The charging function of device 10 was described in detail
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`in System and Method for Adapting a USB to Provide Power for Charging a
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`Mobile Device, United States Provisional Application No. 60/273021, filed
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`March 1*, 2001.
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`Turning our attention to the flow of data, when USB device 10 is
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`10
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`connected to USB power adapter 100, the identification block 53 of USB power
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`adapter 100 provides identification information to USB device 10 so that
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`microprocessor 38 of USB device 10 is signaled when device 10 it is connected to
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`USB poweradapter 100. Preferably, microprocessor 38 bypasses enumeration
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`whenit detects the presence of USB adapter 100, such as for instance by detecting
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`15
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`the presence of abnormal data line conditions in USB port 30. The detection may
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`be accomplished using other device subsystems 42 not expressly shown in device
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`10 of Fig. 2, or Fig. 1. Other device subsystems 42 may include comparators that
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`can comparetheelectrical signals in USB port 30 to known values. The preferred
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`method of identification is described in greater detail in reference to Fig. 3, which
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`20
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`will be described next.
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`ZTE/SAMSUNG 1004-0017
`ZTE/SAMSUNG 1004-0017
`IPR2018-00110
`IPR2018-00110
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`

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`Preferably, device 10 can detect the presence of adapter 100. Fig. 3 is a
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`flow diagram showingan exemplary methodof detecting the USB adapter 100 of
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`Fig. 2 when a USB device 10 is connected using USB.
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`Atstep 210, a voltage is detected on the Vbus line of USB connector 47
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`related to USB port 30.
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`At step 220,
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`the D+ and D- lines of USB port 30 are compared to
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`abnormal USB conditions. The example shown in the drawings compares the
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`voltages to 2V. When connected to a normal USB hostor hub (which weakly
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`holds its D+ and D- at zero volts when no device is connected), the USB device
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`10
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`10 will first test for zero volts on both D+ and D-, and if such is detected, will
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`initially indicate approximately zero volts on D- and approximately 5 volts on D+
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`to inform the host of its presence and communications speed. In this example, the
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`chargeridentification block 53 of USB adapter 100 ofFig. 2 forces both D+ and
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`D- to +5V, allowing step 220 to determine that the device connected to USB
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`15
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`connector 47is not a typical USB hostor a hub,leading to step 230. However,if
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`a host or hub is connected, then step 220 does not find an abnormal condition on
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`the USB datalines, and step 240 ensues.
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`At step 230, USB device 10 determines that USB adapter 100 is connected
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`to USB connector 47, after which step 260 ensues whereat the battery 48A is
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`20
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`charged as required.
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`15
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`ZTE/SAMSUNG 1004-0018
`ZTE/SAMSUNG 1004-0018
`IPR2018-00110
`IPR2018-00110
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`

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`On the other hand,if normal USB conditions are detected at step 220, then
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`at step 240, USB device LO determines that a hub or host is connected to USB
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`port 30. Once a host or hub is detected, at step 250, USB device 10 awaits
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`enumeration just as a normal USB device would, and undergo charge negotiation
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`and chargingat step 260.
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`However, by detecting that a USB adapter is present, USB device 10 can
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`forego awaiting the USB host-initiated enumeration process and charge
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`negotiation, and draw power immediately from USB adapterat a desiredrate, for
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`instance at 5 unit loads, i.e. 5S00mA. Furthermore,all traditional USB functions of
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`mobile device 10 can be disabled.
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`Conversely, by detecting that a USBhostor hubis present, USB device 10
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`can set D+ to indicate its presence, and await the host-initiated enumeration
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`followed by USB charge negotiation as has already been discussed with respect to
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`the preferred mode of operation of USB device 10, in System and Method for
`
`Adapting a USB to Provide Power for Charging a Mobile Device, United States
`
`Provisional Application No. 60/273021, filed March 1“, 2001.
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`Referring now to Fig. 4, a second exemplary embodiment of a USB power
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`adapteris illustrated embodied in a USB charger 110 that charges a battery while
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`adapting various power sources to powerthe device of Fig. 1
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`As compared to the embodiment of Fig. 2, power supply 50 has been
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`substituted with Dual Power supply 50’ which also provides power to charging
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`ZTE/SAMSUNG 1004-0019
`ZTE/SAMSUNG 1004-0019
`IPR2018-00110
`IPR2018-00110
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`

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`subsystem 62, to charge a second battery 48B via battery terminals 54B. It is
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`preferable that first battery 48A is releasably attached to USB device battery
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`terminals 54A. Similarly, second battery 48B is releasably attached to USB
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`charger 110. First battery 48A and secondbattery 48B as well as battery terminals
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`54A and 54B are compatible so that second battery 48B canreplacefirst battery
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`48A and vice versa.
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`Preferably, charging subsystem 62 performs in a substantially similar
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`manner to charging subsystem 44 of device 10 as described in System and
`
`Method for Adapting a USB to Provide Power for Charging a Mobile Device,
`
`United States Provisional Application No. 60/273021, filed March 1* 2001.
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`However, for efficiency and simplicity of design, certain aspects of dual power
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`supply 50 and charging subsystem 62 may be combined,as both are local to USB
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`charger 110.
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`Concerningthe travel kit feature common to the embodimentsof Figs. 2
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`and 4, plug unit 56 provides power to power supplies 50 and 50’, which are
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`designed to accept power beyond the expected range of input voltages and AC
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`frequencies. The design of such a power supply is obvious to one familiar with
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`the art of switch-mode powersupply design. Plug unit 56 can receive exclusively
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`one of a plurality of plug adapters including 58B,D,N each plug adapter
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`compatible with a plurality of power sockets 60B,D,N respectively. Plug adapters
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`58B,D,Nare preferably releasably attached to plug unit 56 so that the appropriate
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`17
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`ZTE/SAMSUNG 1004-0020
`ZTE/SAMSUNG 1004-0020
`IPR2018-00110
`IPR2018-00110
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`

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`hyaitte
`wel 2team
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`plug adapter 58B,D,N,O can be selected by a user to connect plug unit 56 to any
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`one available power socket 60B,D,N. For example, in North America, a type “N”
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`plug adapter 58N is releasably attached to plug unit 56 thereby allowing any
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`North American power socket 60N to be used as a power source. Whentraveling
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`5
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`toa locale which does not have North American power sockets 60N,an alternate
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`plug adapter such as 58B,D can be selected by the user, releasably attached to
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`plug unit 56 in place of 58N,thereby allowing adapter 100 to connectto a local
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`powersupply via local power socket such as 60B,D. Various other plug adapters
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`are envisaged, and thetravel kit can be configured to operate with alternate power
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`10
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`sources, such as for instance plug units for car sockets.Although not expressly
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`shown in the drawings, alternate embodiments of USB adapters may include a
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`second or more USB connectors. If more than one USB connectoris present in a
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`USB adapter, then USB connector 52 refers to a downstream USB connector and
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`as such many USB devices may draw power simultaneously from one or more
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`15
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`USB downstream connectors. Preferably, a USB adapter configured with more
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`than one USB connectors is connected to a host via one US