Please type a plus sign (+) inside !his t>o~ ~ GJ
`
`PROVISIONAL APPLICATION FOR PATENT COVER SHEET
`This is a reauest for filinq a PROVISIONAL APPLICATION FOR PATENT under 37 CFR 1.53(c).
`I Express Mail Label No.
`
`I
`
`""""'
`PTO/SB/16 (02-01)0
`_
`Approved for use through10/31/2002 OMB 0651--0032(-<
`US. Patent and Trademark Office, U.S. DEPART"!JENT OF COMMERCE!l.' ° -
`.
`Under the Paperwork Reduction Act of 1995. no persons are required to respond to a collection of informabon unless 1t displays a valid OMS control numper .• CIO =.-1
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`INVENTOR(S)
`
`Residence
`Family Name or Surname
`(City and either State or Foreign Countivl
`Given Name (first and middle Df any))
`Waterloo, CANADA
`Fischer
`Daniel M.
`Waterloo, CANADA
`Radut
`DanG.
`Cambridge, CANADA
`Habicher
`Michael F.
`0 Additional inventors are being named on the..:!_ separately nvmbered sheets attached hereto
`
`TITLE OF THE INVENTION 1280 characters maxi
`MUL Tl FUNCTIONAL CHARGER SYSTEM AND METHOD
`
`Direct all correspondence to:
`
`D Customer Number I
`
`OR
`
`0 Firm or
`
`Individual Name
`
`CORRESPONDENCE ADDRESS
`
`...
`
`I
`
`Type Customer Number here
`
`Krishna K. Pathiyal, Esq.
`
`I Place Cvstomer Nvmber
`
`Bar Code Label here
`
`I
`
`Address
`
`Address
`City
`Countrv
`
`I
`I
`
`Research In Motion Limited
`295 Phillip Street
`I ZIP I N2L3W8
`I Ontario
`I State
`Waterloo
`ITelenhone I (519)888-7465 I Fax I <519)888-1975
`CANADA
`ENCLOSED APPLICATION PARTS fcheck all that aoolvl
`D CD(s), Number
`I 19
`I
`0 Specification Nvmber of Pages
`I
`E] Other (specify) I Power of Attorney
`14
`0 Drawing(s) Nvmber of Sheets
`D Application Data Sheet. See 37 CFR 1.76
`METHOD OF PAYMENT OF FILING FEES FOR THIS PROVISIONAL APPLICATION FO.R PATENT
`D
`0
`[] The Commissioner is hereby authorized to charge filing
`D
`The invention was made by an agency of the United States Government or under a contract with an agency of the
`United States Government.
`0 No.
`0 Yes. the name of the U.S. Government agency i ie Govefnt contract number are:
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`Applicant claims small entity status. See 37 CFR 1.27.
`A check or money order is enclosed to cover the filing fees
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`fees or credit any overpayment to Deposit Account Number:
`Payment by credit care!. Form PT0-2038 is attached.
`
`i so-1995
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`FILING FEE
`AMOUNT/$\
`
`160.00
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`I
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`I
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`~
`
`,
`
`I
`
`I
`
`I
`
`SIGNATURE
`
`Respectfully submitted, ~ - /~
`TYPED or PRINTED NAME l('(shna K. Path ~al' Esq
`
`!22110101 I
`
`Date
`
`REGISTRATION NO.
`(if appropriate)
`Docket Number:
`
`144435
`j 850-001
`
`TELEPHONE (519) 888-7465 (Ext 2535)
`USE ONLY FOR FILING A PROVISIONAL APPL/CATION FOR PATENT
`This collection ol 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. Confidentialit¥ 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, prepanng, and submitting the complete provisional application to the PTO. Time will vary depending upon
`the individual case. Any comments on the amount of time you require to complete 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 11-llS ADDRESS. SEND TO: Box Provisional Application, Assistant
`Commissioner for Patents, Washin;iton. D.C. 20231.
`
`ZTE/SAMSUNG 1004-0001
`IPR2018-00111
`
`

`

`PTO/SB/16 (02-01)
`Approved for use through 10/31/2002. OMB 0651·0032
`U.S. Patent and Trademark Office; U $ DEPARTMENT OF COMMERCE
`be
`r.
`rol
`Under the Paperworlt Reducll)n Act of 1995. no persons are required to resoond to a collect on o on ormatton u ess 1t 1soavs a va 1
`num
`1 cont
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`
`PROVISIONAL APPLICATION COVER SHEET
`Additional Page
`
`I Docket Number 1850-001
`
`I Type a plus sign(+)
`
`inside this box ~
`
`I+
`
`INVENTOR(S)IAPPLICANT(S)
`
`Given Name /flfst and middle rit anvl)
`Quang A.
`Jonathan T.
`
`Familv or Surname
`Luong
`
`Malton
`
`Residence
`(Citv and either State or ForPkin Counlrv)
`Kitchener, CANADA
`Kitchener, CANADA
`
`Number _1_
`
`of
`
`WARNING: Information on this form may become public. Credit card information should not
`be Included on this form. Provide credit card information and authorization on PT0-2038.
`
`ZTE/SAMSUNG 1004-0002
`IPR2018-00111
`
`

`

`VIA COURTER
`
`BOX PROVISIONAL APPLICA TlON
`Assistant Commissioner for P atents
`Washington, D.C. 20231
`USA
`
`October 22, 200 l
`
`Dear Sir:
`
`Re:
`
`NEW PROVISIONAL PATENT APPLICATION
`Daniel M . Fischer ; Dan G. Radut; Michael F. Habichcr; Quang A. Luong;
`Inventor (s):
`J onathan M alton
`MUL T1FUNCTIONAL CHARGER SYSTEM AND METHOD
`850-001
`
`Title:
`Our Ref:
`
`Cj
`
`Enclosed in connection with this new provisional patent application are the following:
`Number of Pages
`2
`
`(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
`
`No. of Figures: 4
`
`1
`19
`4
`5
`1
`
`Payment of Fees:
`In sum, please charge the following fees to our deposit account as indicated on the Cover Sheet:
`
`Filing feeof$160.00
`
`Krishna K. Pathiyal
`Patent Agent
`
`Encl.
`
`Research In Motion limited 295 Phrl 1p Street. Waterloo, Ontano N2l 3W8 (.1nada
`
`:el -1 ('.> 19) 888-746'.> •ax - , (519) 888-6990 web wwwnm net
`
`ZTE/SAMSUNG 1004-0003
`IPR2018-00111
`
`

`

`r
`
`Multifunctional Charger System and Method
`
`CROSS-REFERENCE TO RELATED APPLICATION
`
`This application is related to the fo11owing prior application: System and
`
`5 Method for Adapting a USB to Provide Power for Charging a Mobile Device,
`
`United States Provisional Application No. 60/273021, filed March 15
`
`\ 2001. This
`
`prior application, including the entire written description and drawing figures, is
`
`hereby incorporated into the present application by reference.
`
`10
`
`BACKGROUND
`
`1.
`
`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
`
`:
`!
`F'
`
`adapter and battery charger for charging a 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 USB interface (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
`IPR2018-00111
`
`

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`2.
`
`DESCRIPTION OF THE RELATED ART
`
`Supplying power to a mobile device involves the participation of a mobfle
`
`device on one hand, as well as the participation of a power source on the other.
`
`5
`
`On one hand, most mobile devices provide a first power intetface for
`
`receiving power from a power source, for instance to recharge a battery, and a
`
`second data interface for communicating that is separate from the power interface.
`
`Although it is desirable to have a combined power and data interface, most
`
`combined interfaces are non-standard so that one mobile device provided by one
`
`10
`
`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 stiJI maintain a separate power
`
`interface, such as a barrel connector, for receiving power.
`
`15
`
`However, a USB chargeable mobile device provided according to System
`
`and Method for Adapting a USB to Provide Power for Charging a Mobile Device,
`
`Unjted States Provisional Application No. 60/273021, filed March 15
`
`\ 2001 , has a
`
`single USB inte1face for both communicating and recharging a battery. Given that
`
`USB connectors are popular widely supported in industry, a USB chargeable
`
`20
`
`device solves the problem of the combined interface at a USB chargeable mobile
`
`device.
`
`2
`
`ZTE/SAMSUNG 1004-0005
`IPR2018-00111
`
`

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`On the other hand, traditional USB power source devices, such as hubs
`
`and hosts, 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
`
`5
`
`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 USB device via a USB interface.
`
`There is a need for a USB power adapter 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 USB interface.
`
`Furthermore, there is a need for a method that can allow a USB device to
`
`differentiate between the provided USB power adapter and traditional USB power
`
`sources such as 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.
`
`Further still, 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
`
`3
`
`ZTE/SAMSUNG 1004-0006
`IPR2018-00111
`
`

`

`It is an object of the present invention to provide a USB power adapter
`
`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
`
`5
`
`be practiced at a USB device to differentiate between a USB power adapter 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.
`
`10
`
`It is still another object of the present invention to provide a travel kit to
`
`adapt various conventional power sources 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 order that 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. l is a block diagram of a USB chargeable mobile device with which
`
`the instant invention may cooperate;
`
`4
`
`ZTE/SAMSUNG 1004-0007
`IPR2018-00111
`
`

`

`Fig. 2 shows a first 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 of differentiating
`
`5
`
`between a USB power adapter and traditional USB hosts and hubs, according to
`
`the present invention; and
`
`Fig. 4 shows a second exemplary embodiment of a USB power adapter in
`
`the form of a USB charger that charges a battery while adapting various power
`
`sources to power the 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 which the 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
`
`5
`
`ZTE/SAMSUNG 1004-0008
`IPR2018-00111
`
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`capabilities, a wireless Internet appliance or a data corrununication 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
`
`5
`
`transmitter 14, and associated components such as one or more, preferably
`
`embedded or internal, antenna elements 16 and 18, local oscillators (LOs) 13, and
`
`a processing module such as a digital signal processor (DSP) 20. As wHI be
`
`apparent to those skilled in the field of communications, the particular design of
`
`the communication subsystem 11 will be dependent upon the communkation
`
`10
`
`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 TM mobile communication system or
`
`DataTAC™ mobile communication system, whereas a device 10 intended for use
`
`in Europe may
`
`jncorporate a General Packet Radio Service
`
`(GPRS)
`
`15
`
`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 personal identification
`
`number or PIN associated with each device. In GPRS networks however, network
`
`20
`
`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
`
`6
`
`ZTE/SAMSUNG 1004-0009
`IPR2018-00111
`
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`as a SIM card, in order to operate on a GPRS network. Without a SJM card, a
`
`GPRS device 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 performed in
`
`the DSP 20. In a similar manner, signals to be transmitted are processed,
`
`including modulation and encoding for example, by the DSP 20 and input to 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.
`
`7
`
`ZTE/SAMSUNG 1004-0010
`IPR2018-00111
`
`

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`The device 10 preferably includes a microprocessor 38 which controls the
`
`overaJI 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
`
`5
`
`the display 22, flash memory 24, random access memory (RAM) 26, auxiliary
`
`inputloutput (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 power source 46 and battery 48. Charging
`
`10
`
`subsystem 44 provides power to device 10, preferably from battery 48. However,
`
`when battery 48 becomes depleted, power source 46 is used to charge battery 48,
`
`and optionally power device 10. Power source 46 preferably obtains power from
`
`USB port 30.
`
`Some of the subsystems shown in Fig. I perform communication-related
`
`15
`
`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 calculator or task list.
`
`20
`
`Operating system software used by the microprocessor 38 is preferably
`
`stored in a persistent store such as flash memory 24, which may instead be a read
`
`8
`
`ZTE/SAMSUNG 1004-0011
`IPR2018-00111
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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
`
`5
`
`26.
`
`The microprocessor 38, in addition to its operating system functions,
`
`preferably enables execution of software applications on
`
`the device. A
`
`predetennined set 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 items at least. This would be especially advantageous in
`
`9
`
`ZTE/SAMSUNG 1004-0012
`IPR2018-00111
`
`

`

`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 J/O subsystem 28, serial port 30, short-range
`
`communications subsystem 40 or any other suitable subsystem 42, and installed
`
`5
`
`by a user in the RAl\11 26 or preferably 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 functions and other
`
`10
`
`such financial 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 wiIJ 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 J/O device 28. Such composed items may then be
`
`transmitted over a communication network through the communication subsystem
`
`20
`
`11.
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`ZTE/SAMSUNG 1004-0013
`IPR2018-00111
`
`

`

`For voice communkations, overall operation of the device 10 is
`
`substantially similar, except that received signals would preferably be output to 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
`
`5
`
`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 may include 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 implemented in 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 downloads to the device 10 other than through a wireless
`
`11
`
`ZTE/SAMSUNG 1004-0014
`IPR2018-00111
`
`

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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
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`data and power connector 47 is used to receive power and data from power/data
`
`5
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`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.
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`Charging subsystem 44 is a component that provides power for the device
`
`10 and different subsystems or devices. For example, the charging subsystem 44
`
`10 may determine the presence of battery 48 and associated power circuits, such as
`
`an AC adaptor, USB bus, or car adaptor which alternatively act as power sources
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`46 to provide power for the device and to charge battery 48. Additionally,
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`charging subsystem 44 may determine the absence of power source 46, and
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`consequently power device 10 from battery 48. When the battery 48 powers
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`15
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`device 10, the battery 48 is said to be in a discharging state. Conversely, when
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`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
`
`Provisional Application No. 60/273021, filed March l 5
`
`\ 2001.
`
`20
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`Many alternatives to device 10 may cooperate with the instant invention,
`
`although the preferred device 10 has been fully described. Preferably, an
`
`12
`
`ZTE/SAMSUNG 1004-0015
`IPR2018-00111
`
`

`

`alternative to device 10 has at least a USB connector 47 in order to draw power in
`
`cooperation with the instant invention. Optionally, an alternative to device 10 may
`
`also have a rechargeable battery that may be charged in cooperation with the
`
`instant invention. Furthermore, an alternative to device 10 may also carry out the
`
`5 method of Fig. 4 so as to remain backwards compatible with traditional USB
`
`power-sourcing devices, such as hosts or hubs.
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`Fig. 2 shows an exemplary embodiment of a USB power adapter 100 that
`
`adapts various power sources 60 to power the device 10 of Fig. 1. Using power
`
`supplied via USB connector 47, USB device 10 charges a first battery, contained
`
`10
`
`in the device.
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`The flow of power will be described first, followed by the flow of data.
`
`Power flows form power socket 60N into a plug adapter 58N of USB power
`
`adapter 100. The plug adapter S8N is one of many S8N,S8D,S8B provided in a
`
`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
`
`of the various power sockets can act as a power source for power supply 50,
`
`which receives power from plug unit 56.
`
`Power supply 50 provides power to USB device 10 via USB connectors 52
`
`of USB adapter 100 and 47 of USB device 10. In this regard, USB power adapter
`
`20
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`100 adapts power source 60, in this case any one of a plurality of AC power
`
`sockets including 60D,N,B to power device 10.
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`13
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`ZTE/SAMSUNG 1004-0016
`IPR2018-00111
`
`

`

`Power flows out of adapter 100 via USB connector 52, on the Vbus and
`
`Gnd lines to USB connector 47 in USB device 10. Preferably, power distribution
`
`and charging subsystem 44 selectively uses power on the Vbus and Gnd lines of
`
`USB connector 47 to optionally power device 10, and charge first battery 48A via
`
`5
`
`battery terminals 54A. The charging function of device 10 was described in detail
`
`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 151, 2001.
`
`Turning our attention to the flow of data, when USB device 10 is
`
`10
`
`connected to USB power adapter 100, the identification block 53 of USB power
`
`adapter 100 provides identification information to USB device 10 so that
`
`microprocessor 38 of USB device 10 is signaled when device 10 it is connected to
`
`USB power adapter 100. Preferably, microprocessor 38 bypasses enumeration
`
`when it detects the presence of USB adapter 100, such as for instance by detecting
`
`15
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`the presence of abnormal data line conditions in USB port 30. The detection may
`
`be accomplished using other device subsystems 42 not expressly shown in device
`
`10 of Fig. 2, or Fig. 1. Other device subsystems 42 may include comparators that
`
`can compare the electrical signals in USB port 30 to known values. The preferred
`
`method of identification is described in greater detail in reference to Fig. 3, which
`
`20 will be described next
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`14
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`ZTE/SAMSUNG 1004-0017
`IPR2018-00111
`
`

`

`Preferably, device 10 can detect the presence of adapter 100. Fig. 3 is a
`
`flow diagram showing an exemplary method of detecting the USB adapter 100 of
`
`Fig. 2 when a USB device 10 is connected using USB.
`
`At step 210, a voltage is detected on the Vbus line of USB connector 47
`
`5
`
`related to USB port 30.
`
`At step 220, the D+ and D- lines of USB port 30 are compared to
`
`abnormal USB conditions. The example shown in the drawings compares the
`
`voltages to 2V. When connected to a normal USB host or hub (which weakly
`
`holds its D+ and D- at zero volts when no device is connected), the USB device
`
`10
`
`10 will first test for zero volts on both D+ and D-, and if such is detected, will
`
`initially indicate approximately zero volts on D- and approximately 5 volts on D+
`
`to inform the host of its presence and communications speed. In this example, the
`
`charger identification block 53 of USB adapter 100 of Fig. 2 forces both D+ and
`
`D- to +SV, allowing step 220 to determine that the device connected to USB
`
`15
`
`connector 47 is not a typical USB host or a hub, leading to step 230. However, if
`
`a host or hub is connected, then step 220 does not find an abnormal condition on
`
`the USB data lines, and step 240 ensues.
`
`At step 230, USB device 10 determines that USB adapter 100 is connected
`
`to USB connector 47, after which step 260 ensues whereat the battery 48A is
`
`20
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`charged as required.
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`ZTE/SAMSUNG 1004-0018
`IPR2018-00111
`
`

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`On the other hand, if normal USB conditions are detected at step 220, then
`
`at step 240, USB device 10 determines that a hub or host is connected to USB
`
`port 30. Once a host or hub is detected, at step 250, USB device 10 awaits
`
`enumeration just as a normal USB device would, and undergo charge negotiation
`
`5
`
`and charging at step 260.
`
`However, by detecting that a USB adapter is present, USB device 10 can
`
`forego awaiting
`
`the USB host-initiated enumeration process and charge
`
`negotiation, and draw power immediately from USB adapter at a desired rate, for
`
`instance at 5 unit loads, i.e. SOOmA. Furthermore, all traditional USB functions of
`
`10 mobile device 10 can be disabled.
`
`Conversely, by detecting that a USB host or hub is present, USB device 10
`
`can set D+ to indicate its presence, and await the host-initiated enumeration
`
`followed by USB charge negotiation as has already been discussed with respect to
`
`the preferred mode of operation of USB device 10, in System and Method for
`
`15 Adapting a USB to Provide Power for Charging a Mobile Device, United States
`
`Provisional Application No. 60/273021, filed March 1st, 2001.
`
`Referring now to Fig. 4, a second exemplary embodiment of a USB power
`
`adapter is illustrated embodied in a USB charger 110 that charges a battery while
`
`adapting various power sources to power the device of Fig. 1
`
`20
`
`As compared to the embodiment of Fig. 2, power supply 50 has been
`
`substituted with Dual Power supply 50' which also provides power to charging
`
`16
`
`ZTE/SAMSUNG 1004-0019
`IPR2018-00111
`
`

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`subsystem 62, to charge a second battery 48B via battery terminals 54B. It is
`
`preferable that first battery 48A is releasably attached to USB device battery
`
`terminals 54A. Similarly, second battery 48B is releasably attached to USB
`
`charger 110. First battery 48A and second battery 48B as well as battery terminals
`
`5
`
`54A and 54B are compatible so that second battery 48B can replace first battery
`
`48A and vice versa.
`
`Preferably, charging subsystem 62 performs in a substantially similar
`
`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,
`
`10
`
`United States Provisional Application No. 60/273021, filed March 151 2001.
`
`However, for efficiency and simplicity of design, certain aspects of dual power
`
`supply 50 and charging subsystem 62 may be combined, as both are local to USB
`
`charger 110.
`
`Concerning the travel kit feature common to the embodiments of Figs. 2
`
`15
`
`and 4, plug unit 56 provides power to power supplies 50 and 50', which are
`
`designed to accept power beyond the expected range of input voltages and AC
`
`frequencies. The design of such a power supply is obvious to one familiar with
`
`the art of switch-mode power supply design. Plug unit 56 can receive exclusively
`
`one of a plurality of plug adapters including 58B,D,N each plug adapter
`
`20
`
`compatible with a plurality of power sockets 60B,D,N respectively. Plug adapters
`
`58B,D,N are preferably releasably attached to plug unit 56 so that the appropriate
`
`17
`
`ZTE/SAMSUNG 1004-0020
`IPR2018-00111
`
`

`

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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''
`
`plug adapter 58N is releasably attached to plug unit 56 thereby allowing any