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`First Inventor
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`555255012844
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`ingbyOtherThanAlltheInventors,andDeclarationof
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`forFil
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`Cochran
`DavidB.
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`II
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`nclosedwith#Sb—CopyofLettertoDanRadut,
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`909010.IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
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`'nLOLAI
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`UTILITY
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`PATENT APPLICATION
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`**which claimed us 60/273,021 filed 03/01/2001 and us 60/330486 fiIedeiIII‘igiifi(FIX 1002
`RUSP 7,239,111
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`Page 1 of 246
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`PTO/SB/17 (12-04v2)
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`Small Entity
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`150
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`Application Type
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`Fee (fi)
`300
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`Fee (5)
`500
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`Design
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`Plant
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`Reissue
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`Provisional
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`-
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`200
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`200
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`300
`
`200
`
`100
`
`100
`
`150
`
`100
`
`100
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`300
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`500
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`O
`
`50
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`150
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`250
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`O
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`Small Entity
`Fee(§)
`100
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`Fee (fl
`200
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`130
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`160
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`600
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`0
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`65
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`80
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`0
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`. ‘2. EXCESS_CLAIM FEES
`7 WIQtIW‘Jg—* * I“ ' W"
`Each claim over 20 (including Reissues)
`Each independent claim over 3 (including Reissues)
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`' Extra Claims
`13
`- 20 or HP =
`Q
`
`Fee (§)
`5Q
`
`=
`
`x
`
`'
`
`r"
`
`’ M1
`_(§)F.ee;-
`i =
`i
`50
`200
`360
`Multiple Dependent Claims
`Fee l§l
`Fee Paid (5)
`
`360
`—_
`
`O
`
`Fee Paid (fl
`5) ill!
`
`Fee Paid (fi)
`(2 Qt)
`
`0
`
`HP = highest number of total claims paid for, if greater than 20.
`Indep. Claims
`'
`Extra Claims
`Fee (5)
`=
`x
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`- 3 or HP =
`Q
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`HP = highest number of independent claims paid for, ifgreaterthan 3.
`
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`If the speCIfication and drawmgs exceed 100 sheets of paper (excluding electronically filed sequence or computer
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`Total Sheets
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`Num er of each additional 50 or raction thereof
`30
`. 100 =
`0
`/50 =
`0
`(round up to a whole number)
`x
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`Fee Paid 151
`\ 0
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`=
`
`Fee (fi)
`250
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`Non-English Specifi
`Other (e.g., late filin_
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`If you need assistance in completing the form, call 1-800-PTO-9199 and select option 2.
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`-
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`Evauaeasuauu31/
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`Multifunctional Charger System and Method
`
`CROSS-REFERENCE TO RELATED APPLICATIONS
`
`This application is a continuation United States Patent Application No. 10/087,629,
`
`entitled “Multifunctional Charger System and Method,” which was filed on March 1, 2002.
`
`United States Patent Application No. 10/087, 629 claims priority from and is related to United
`
`States Provisional Application No. 60/273,021, entitled “System and Method for Adapting a
`
`USB to Provide Power for Charging a Mobile Device,” which was filed on March 1, 2001, and
`
`United States Provisional Application No. 60/330,486, entitled “Multifunctional Charger System
`
`and Method”, which was filed on October 23, 2001. The entirety of these prior applications are
`
`hereby incorporated into the present application by reference.
`
`1.
`
`Field of the Invention
`
`BACKGROUND
`
`This invention relates generally to power adapters. More particularly, the invention
`
`relates to power adapters for use with mobile devices.
`
`10
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`15
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`2.
`
`Description of the Related Art
`
`Providing an external source of power to a mobile device, such as a personal digital
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`20
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`assistants (“PDA”), mobile communication device, cellular phone, wireless two-way e-mail
`
`communication device, and others, requires design considerations with respect to both the mobile
`
`device and the power source. With regard to the mobile device, most mobile devices provide a
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`distinct power interface for receiving power from a power source, for instance to recharge a
`
`battery, and a separate data interface for communicating. For example, many mobile devices
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`presently use USB (Universal Serial Bus) interfaces for communicating and use a separate power
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`interface, such as a barrel connector, for receiving power.
`
`It is desirable, however, to have a combined power and data interface. The mobile
`
`devices that do have combined power and data interfaces typically use non-standard and
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`sometimes proprietary interfaces. Consequently, combined interfaces for a particular
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`manufacturer’s mobile device may not be compatible with combined interfaces for mobile
`
`devices provided by other manufacturers.
`
`Although the USB interface can be used as a power interface, the USB is typically not
`
`used for that purpose by mobile devices. In accordance with the USB specification, typical USB
`
`10
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`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 mobile device could be adapted to
`
`participate in enumeration when drawing power over the USB interface, it would be preferable in
`
`many situations, such as when a host would not be available, as often happens during normal use
`
`15
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`of a mobile device, to be able to utilize alternate power sources such as conventional AC outlets
`
`and DC car sockets that are not capable of participating in enumeration to supply power to the
`
`mobile device via a USB interface.
`
`SUMMARY
`
`20
`
`An adapter for providing a source of power to a mobile device through an industry
`
`standard port is provided. In accordance with one aspect of the invention, the adapter comprises
`
`a plug unit, a power converter, a primary connector, and an identification subsystem. The plug
`
`unit is operative to couple the adapter to a power socket and operative to receive energy fi'om the
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`power socket. The power converter is electrically coupled to the plug unit and is operable to
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`regulate the received energy from the power socket and to output a power requirement to the
`
`mobile device. The primary connector is electrically coupled to the power converter and is
`
`operative to couple to the mobile device and to deliver the outputted power requirement to the
`
`mobile device. The identification subsystem is electrically coupled to the primary connector and
`
`is operative to provide an identification signal.
`
`In accordance with another aspect, a USB adapter for providing a source of power to a
`
`mobile device through a USB port is provided. The USB adapter comprises a plug unit, a power
`
`converter, a primary USB connector, and an identification subsystem. The plug unit is operative
`
`10
`
`to couple the USB adapter to a power socket and operative to receive energy from the power
`
`socket. The power converter is electrically coupled to the plug unit and is operable to regulate
`
`the received energy from the power socket and to output a power requirement to the mobile
`
`device. The primary USB connector is electrically coupled to the power converter and is
`
`operative to couple to the mobile device and to deliver the outputted power requirement to the
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`15
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`mobile device. The identification subsystem is electrically coupled to the primary connector and
`
`is operative to provide an identification signal.
`
`Another aspect provides a USB adapter for providing a source of power to a mobile
`
`device through a USB port. The USB adapter comprises a plug unit, a power converter, a
`
`primary USB connector, and an auxiliary USB adapter. The plug unit is operative to couple the
`
`20
`
`USB adapter to a power socket and operative to receive energy from the power socket. The
`
`power converter is electrically coupled to the plug unit and is operable to regulate the received-
`
`energy from the power socket and to output a power requirement to the mobile device. The
`
`primary USB connector is electrically coupled to the power converter and is operative to couple
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`to the mobile device and to deliver the outputted power requirement to the mobile device. The
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`auxiliary USB connector has data lines that are electrically coupled to the data lines of the
`
`primary USB connector.
`
`Yet another aspect provides a method for providing energy to a mobile device using a
`
`USB adapter that comprises a plug unit, a primary USB connector, a power converter electrically
`
`coupled between the plug unit and the primary USB connector, and an identification subsystem
`
`electrically coupled to the primary USB connector. The method comprising the steps of
`
`coupling the USB connector to the mobile device, coupling the plug unit to a power socket,
`
`outputting a power requirement to the mobile device Via the power converter and the USB
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`10
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`connector, and providing an identification signal to the mobile device, via the identification
`
`subsystem and the USB connector, that is operative to inform the mobile device that the USB
`
`adapter is not limited by the power limits imposed by the USB specification.
`
`In accordance with another aspect, a powering system for a mobile device having a USB
`
`connector is provided. The powering system comprises a power distribution subsystem in the
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`15
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`mobile device that is operable to receive energy through the USB connector and to distribute the
`
`energy to at least one component in the mobile device and a USB adapter that is operative to
`
`couple to the USB connector.. The USB adapter comprises a plug unit for coupling to a power
`
`socket and that is operable to receive energy fiom the power socket, a power converter
`
`electrically coupled to the plug unit for regulating the received energy and for providing a power
`
`20
`
`requirement to the power distribution subsystem, and an identification subsystem that is operable
`
`to transmit an identification signal that is operative to identify the USB adapter as not being
`
`limited by the power limits imposed by the USB specification.
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`BRIEF DESCRIPTION OF THE DRAWINGS
`
`In order that the invention identified in the claims may be more clearly understood,
`
`preferred embodiments thereof will be described in detail by way of example, with reference to
`
`the accompanying drawings, in which:
`
`Fig.
`
`1
`
`is a schematic diagram of an exemplary mobile device which has an industry
`
`standard interface;
`
`Fig. 2 is a schematic diagram of a first embodiment of a USB adapter that is coupled to
`
`an exemplary mobile device;
`
`Fig. 3 is a flow chart illustrating an exemplary use of a USB adapter with a mobile
`
`10
`
`device; and
`
`Fig. 4 is a schematic diagram of an additional exemplary embodiment of a USB adapter
`
`that is coupled to both an exemplary mobile device and an external battery.
`
`15
`
`Exemplary Mobile Device
`
`DETAILED DESCRIPTION
`
`Turning now to the drawing figures, shown in Fig. 1 is a schematic diagram of an
`
`exemplary mobile communication device 10 which has an industry standard interface. The
`
`mobile communication device 10 is preferably a two-way communication device having at least
`
`voice or data communication capabilities. Preferably, the mobile device 10 is also capable of
`
`20
`
`communicating over the Internet, for example, Via a radio frequency (“RF”) link. Examples of
`
`types of devices that could be classified as a mobile device 10 include a data messaging device, a
`
`two-way pager, a cellular telephone with data messaging capabilities, a wireless Internet
`
`appliance, a data communication device (with or without telephony capabilities), a personal
`
`digital assistants (“PDA”), a wireless two-way e-mail communication device, and others.
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`The exemplary mobile device 10 comprises a microprocessor 12, a communication
`
`subsystem 14, input/output (“I/O”) devices 16, an industry standard interface 18 which in this
`
`example is a USB port, and a power subsystem 20. The microprocessor 12 controls the overall
`
`operation of the mobile device 10. The communication subsystem 14 provides the mobile device
`
`10 with the ability to communicate wirelessly with external devices such as other mobile devices
`
`and other computers. The I/O devices 16 provide the mobile device 10 with input/output
`
`capabilities for use with a device user. The USB port 18 provides the mobile device 10 with a
`
`serial port for linking directly with other computers and/or a means for receiving power from an
`
`external power source. The power subsystem 20 provides the mobile device 10 with a local
`
`10
`
`power source.
`
`The exemplary communication subsystem 14 comprises components such as a receiver
`
`22, a transmitter 24, antenna elements 26 and 28, local oscillators (LOs) 30, and a processing
`
`module such as a digital signal processor (DSP) 32. The particular design of the communication
`
`subsystem 14 and the components used therein can vary. It would be apparent to one of ordinary
`
`15
`
`skill in the art to design an appropriate communication subsystem using conventional methods
`
`and components to operate over a communication network 34 based on the parameters necessary
`
`to operate over that communication network. For example, a mobile device 10 geographically
`
`located in North America may include a communication subsystem 14 designed to operate
`
`within the MobitexTM mobile communication system or DataTACTM mobile communication
`
`20
`
`system, whereas a mobile device 10 intended for use in Europe may incorporate a General
`
`Packet Radio Service (GPRS) communication subsystem 14.
`
`Network access requirements will also vary depending upon the type of network 34. For
`
`example, in the Mobitex and DataTAC networks, mobile devices 10 are registered on the
`
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`network using a unique personal identification number or PIN associated with each device. In
`
`GPRS networks however, network access is associated with a subscriber or user of a mobile
`
`device 10. A GPRS device therefore requires a subscriber identity module (not shown),
`
`commonly referred to as a SIM card, in order to operate on a GPRS network. Without a SIM
`
`card, a GPRS device will not be fully functional. Local or non-network communication functions
`
`(if any) may be operable, but the mobile device 10 will be unable to carry out any functions
`
`involving communications over the network 34.
`
`When required, after the network registration or activation procedures have been
`
`completed, a mobile device 10 may send and receive communication signals over the network
`
`10
`
`34. Signals received by the receiver antenna 26 through a communication network 34 are input
`
`to the receiver 22, which may perform such common receiver functions as signal amplification,
`
`frequency down conversion, filtering, channel selection and the like, and in the exemplary
`
`system shown in Fig. l, analog to digital conversion. Analog to digital conversion of a received
`
`signal allows more complex communication functions such as demodulation and decoding to be
`
`15
`
`performed in a DSP 32. Similarly, signals to be transmitted are processed, including modulation
`
`and encoding for example, by the DSP 32 and input to the transmitter 24 for digital to analog
`
`conversion, frequency up conversion, filtering, amplification and transmission over the
`
`communication network 34 via the transmitter antenna 28.
`
`Also, in the exemplary communication subsystem 14, the DSP 32 processes
`
`20
`
`communication signals and also provides for receiver and transmitter control. For example, the
`
`gains applied to communication signals in the receiver 22 and transmitter 24 may be adaptively
`
`controlled through automatic gain control algorithms implemented in the DSP 32.
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`In implementing its control function, the microprocessor 12 in the exemplary mobile
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`device 10 executes an operating system. The operating system software used by the
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`microprocessor 12 is preferably stored in a persistent store such as flash memory 36, or
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`alternatively read only memory (ROM) or similar storage element. The microprocessor 12 may
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`also enable the execution of specific device applications, which preferably are also stored in a
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`, persistent store. The operating system, specific device applications, or parts thereof, may also be
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`temporarily loaded into a volatile store such as in RAM 38.
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`A predetermined set of applications which control basic device operations, including at
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`least data and voice communication applications for example, will normally be installed on the
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`mobile device 10 during manufacture. One such application loaded on the mobile device 10
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`could be a personal information manager (PIM) application. The PM application preferably is
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`an application for organizing and managing user inputted data items such as e—mail, calendar
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`events, voice mails, appointments, and task items. The PIM data items may be stored in the
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`RAM 38 and/or the flash memory 36.
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`The PIM application preferably has the ability to send and receive data items, via the
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`wireless network 34. The PIM data items are preferably seamlessly integrated, synchronized and
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`updated, via the wireless network 34, with corresponding data items stored or associated with a
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`host computer system (not shown) used by the device user. The synchronization of PIM data
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`items is a process by which the PIM data items on the mobile device 10 and the PIM data items
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`on the host computer system can be made to mirror each other.
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`There are several possible mechanisms for loading applications onto the mobile device
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`10. For example, applications may be loaded onto the mobile device 10 through the wireless
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`network 34, an auxiliary I/O subsystem 40, the serial port 18, a short-range communications
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`subsystem 42, such as an infrared (“IR”) communication system, or any other suitable subsystem
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`44. When loading the applications onto the mobile device 10, the device user may install the
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`applications in the RAM 38, the flash memory 36, or preferably a non—volatile store (not shown)
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`such as ROM for execution by the microprocessor 12. The available application installation
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`mechanisms can increase the utility of the mobile device 10 by providing the device user with a
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`way of upgrading the mobile device 10 with additional and/or enhanced on-device functions,
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`communication-related functions, or both. For example, a secure communication application
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`may be loaded onto the mobile device 10 that allows for electronic commerce functions or other
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`financial transactions to be performed using the mobile device 10.
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`The I/O devices 16 may be used to display and/or compose data communication
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`messages. In one mode of operation, a signal received by the mobile device 10, such as a text
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`message or web page download, will be received and processed by the communication
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`subsystem 14, forwarded to the microprocessor 12, which will preferably further process the
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`received signal, and provide the processed signal to one or more of the I/O devices 16 such as a
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`display 46. Alternatively, a received signal such as a voice signal can be provided to a speaker
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`48, or alternatively to an auxiliary I/O device 40.
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`In another mode of operation a device user
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`may compose a data item such as an e-mail message using a keyboard 50 in cooperation with the
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`display 46 and possibly an auxiliary I/O device 40. Alternatively, a device user may compose a
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`voice message via'a microphone 52. The composed data item may then be transmitted over a
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`communication network 34 using the communication subsystem 14.
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`A short-range communications subsystem 42 may be provided in the mobile device 10 to
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`allow the mobile device 10 to communicate with other systems or devices, which need not
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`necessarily be similar to device 10. For example, the short-range communications subsystem 42
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`may include an infrared device and associated circuitry and components or a BluetoothTM
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`communication module to allow the device 10 to communicate with similarly-enabled systems
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`and devices.
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`The USB port 18 provides the mobile device 10 with a serial port for linking directly with
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`other computers to exchange data and/or to receive power. The USB port 18 also provides the
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`mobile device 10 with a means for receiving power from an external power source. For
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`example, in a personal digital assistant (PDA)-type communication device, the USB port 18
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`could be used to allow the mobile device 10 to synchronize data with a user’s desktop computer
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`(not shown). The USB port 18 could also enable a user to set parameters in the mobile device 10
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`10
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`such as preferences through the use of an external device or software application. In addition the
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`USB port 18 may also be used to provide a means for downloading information or software to
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`the mobile device 10 without using the wireless communication network 34. The USB port 18
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`can provide a direct and thus reliable and trusted connection that may for example be used to
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`load an encryption key onto the mobile device 10 thereby enabling secure device
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`communication.
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`Coupled to the USB port 18 is a USB connector 54. The USB connector 54 is the
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`physical component that couples the USB port to the outside world. In the exemplary mobile
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`device 10, the USB connector 54 is used to transmit and receive data from an external
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`data/power source 56, receive power from the external data/power source 56, direct the
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`transmitted/received data from/to the USB port 18, and direct the received power to the power
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`subsystem 20.
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`The exemplary power subsystem 20 comprises a charging and power distribution
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`subsystem 58 and a battery 60. The charging and power distribution subsystem 58 performs
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`many functions.
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`It may be used to transfer energy to the battery 60 from the external data/power
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`source 56 to charge the battery 60 and also to distribute power to the many power requiring
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`components within the mobile device 10. The charging subsystem 58 may be capable of
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`determining the presence of a battery 60 and/or a power circuit coupled to the mobile device 10,
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`such as an AC adapter, USB connection, or car adapter, which alternatively can act as power
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`sources 56 to provide power for the mobile device 10 and to charge the battery 60. Additionally,
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`the charging subsystem 58 may have the ability to determine if a power source 56 is coupled to
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`the mobile device 10 and, in the absence of such a coupling, cause the mobile device 10 to be
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`powered by the battery 60.
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`10
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`The power distributed by the charging and power distribution subsystem 58 may be
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`derived from energy stored in the battery 60 and/or energy received from the external data/power
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`source 56. When the battery 60 is depleted, the charging and power distribution subsystem 58
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`transfers energy from the power source 56 to recharge the battery 60. Optionally, the charging
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`and power distribution subsystem 58 may also transfer energy from the power source 56 to other
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`components in the mobile device 10 to power the mobile device 10 when the battery 60 has been
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`depleted and is recharging. When the data/power source 56 is not connected to the mobile
`device 10, power for the device 10 is derived from the battery 60.
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`Exemplary USB Adapter
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`Fig. 2 is a schematic diagram of a first embodiment of an adapter 100 that can be used to
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`20
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`couple the mobile device 10 of fig. 1 to the data/power source 56 of fig. 1. In this example the
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`adapter 100 is a USB adapter 100 that comprises a primary USB connector 102, a power
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`converter 104, a plug unit 106, and an identification subsystem 108. The power converter is a
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`known element in the art and typically includes at least one of the following components:
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`switching converter, transformer, DC source, voltage regulator, linear regulator and rectifier. In
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`the embodiment shown in fig. 2, the USB adapter 100 is shown coupling a mobile device 10 to
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`one of one or more types of power sockets 110N, 110D, 110B, and 100. Also shown in fig. 2 is
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`an optional auxiliary USB connector 112 that can be used to couple the mobile device 10 to a
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`data source (not shown) such as a personal computer.
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`In the embodiment shown in fig. 2, the primary USB connector 102 is configured to mate
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`with the USB connector 54 of the mobile device 10. The USB adapter 100 is operable to
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`provide power to the mobile device 10 through the Vbus and Gnd power pins in the USB
`connectors 54 and 102. The USB adapter 100 also optionally provides a communication path
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`for data across the D+ and D— data pins in the USB connectors 54 and 102.
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`10
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`15
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`The plug unit 106 is preferably a conventional plug unit that can be used to couple with a
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`conventional power socket to receive power therefrom. For example, the plug unit 106 can be a
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`two prong or three prong plug of the type used in North America that can couple to a North
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`American AC power socket 110N that provides 115 VAC. In the embodiment shown in figure 2,
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`the plug unit 106 can accept one or more types of plug adapters 114N, 114B, 114D, and 114 that
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`are configured to couple to the plug unit 106 and are further configured to directly mate with one
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`or more types of power sockets 110N, 110D, 110B, and 100. The plug unit 106 can be
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`configured to receive energy from a power socket 110N, 110D, 110B, or 100, either directly or
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`through the use of a plug adapter, and is operative to transfer the received energy to the power
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`converter 104.
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`The power co