`
`
`
`aim/lot
`
`’
`
`PM“ We a plus Sign (+1 mm m m ——‘P
`
`Given Name (first and middle [if any])
`
`Family Name or Surname
`
`and either State or Forei-n own.
`Ci
`303_276 Eiwo Ct-
`Water loo , Ontario , CANADA NZK 3M6
`
`
`
`
`
`
`
`
`
`IE Additional inventors are being named on the _l._ sepsrststv numbered sheets attached hereto
`TITLE OF THE INVENTION 280 characters max
`
`SYSTEM AND METHOD FOR ADAPTING A USE TO PROVIDE
`POWER FOR CHARGING A MOBILE DEVICE
`
`
`
`CORRESPONDENCE ADDRESS
`Direct all correspondence to:
`
`
`_*
`l:l
`“
`"‘ ’
`
`
`on
`
`
`David B. Cochran, an-
`
`Jones, Day, Reavis 6 Pogue
`Address
`
`
`North Point, 901 Lakeside Avenue
`Address
`Cleveland “E. 4411:.
`cur
`
`
`——m16 586—3939 216 5?9—0212
`
`
`
`ENCLOSED APPLICATION PARTS check at! that it al
`
`
`
`
`
`[fl Specification NumberofPages
`Elitiilliiliiii '-A _ 33 P85-
`[II
`Eil DWHQIS) NumberofSi-ieets
`Assignment
`.;
`.
`
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`El
`_
`_
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`Power of Attorney fur
`
`
`Pg
`ApplicatranataSheat.See3?CFR1.?6
`'ro 51.0113.
`'91)
`_
`-
`MET—ODOH PAYMENT Wires ORTHIS- 'Rovfi'smru. APPLICATION FOR PATENT
`
`
`Applicant claims small entity status. See 3? CFR 12?,
`FlLlNG FEE
`
`A chedt or money order is enclosed to cover the filing fees
`AMOUNT $
`DE]
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`The Commissioner is hereby authorized to charge fling
`feesorcradit any overpayment to Deposit Account Number:
`X
`501432
`
`Payment by credit card. Form PTO-2035 is attached.
`1:]
`The invention was made by an agency of the United States Government or under a contract with an agency of the
`
`United States Government.
`
`Type Customer Number here
`
`Firm or
`Individualhtame
`
`BarCods Labeihere
`
`X
`
`
`
`
`$190. 00
`
`
`
`
`{:3 No.
`Cl Yes. the name ot the LLS. Government agency and the Government contract number are:
`
`
`
`Respectfoiiysoftness
`E
`E Q
`SlGNATURE
`'
`REGISTRATiON no.
`39 , 142
`rrfappmpriate)
`David B. Cochran
`TYPEDWPR1NTED NAMEm DOWNumbac
`555255012132
`TELEPHONE
`216 586—3939)
`USE ONLYFOR FILING A PROVISIONAL APPLICATION FOR PA TENT
`This collection of intonation is required by 37 CFR 1.51. The infom'iation is used by the public to file (and by the PTO to process) a
`provisionai application. Confidentiality is governed
`35 USC. 122 and 37 CFR 1.14. This cottection is estimated to take 8 hours to
`complete, including gathering, prepann . and subm'
`'ng the mpiete Fovisional staplicatiori to the PTO. Time Wlll gay depending W
`the individual. case.
`y comments on
`6 amount of time you require c complete
`[3 tom: andlor suggestions for
`ucm this bu
`n.
`should be sent to the Chief tnforrnation Officer US. Patent and Trademark Office, US. De artmont of Commerce. We
`ington, DC.
`20231. DO NOT SEND FEES OR COMPLETED FORMS TO THIS ADDRESS. SEND O: Box Provisional Application, Assistant
`Commissioner for Patents. Washington. DC. 20231.
`
`ZTE/SAMSUNG 1003-0001
`ZTE/SAMSUNG 1003-0001
`IPR2018-00110
`|PR2018-00110
`
`fl/P/loa-
`Approved for use ttirough‘lflt31lZUOZPOfiBSEga'SEtw—m}
`11.5. Patent and Trademark Office; US. DEPARTMENT OF COMM
`5%:
`inder the Paperwork Reduction Ad of 1995. no persons are required to respond to a collection of information unless it displays a valid OMB control nu H
`C'.
`«1% is
`PROVISIONAL APPLICATION FOR PA TENT COVER SHEET
`This is a request for filing a PROVISIONAL APPLICATION FOR PATENT under 3? CFR 1.53[c).
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`PROVISIONAL APPLICATION COVER SHEET
`Additionai Page
`
`PTOISBI16 (8-90)
`Approved for use weigh 10I31I2002. 0MB 0651:0032
`U.5. Patent and Trademark Office U S
`EPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act at 1995. no persons are required to resend to a coileciion o! Informatlon unfess ii di. -la 5 a valid OMB conirol number.
`T
`
`
`555255012132
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`lNVENTORfiHAPPUCANTfi)
`
`
`
`‘
`Readence
`Family or Surname
`(City and either State or Foreim Conny!
`300 Regina St. N., 1-1207
`Dan G.
`
`
`Radut
`
`
`Waterloo, Ontario, CANADA NZJ 338
`
`
`
`
`
` Michael F.
`Habicher
`27 Ronald Road
`
`Cambridge, Ontario, CANADA NlS 4N2
`
`
`
`Luong
`94 Fairway Road
`Quang
`Unit 10
`
` Malton
`Jonathan
`
`
`
`Kitchener, Ontario, CANADA N2A 2N5
`
`100 Highland Cr.
`Kitchener, Ontario, CANADA N2M 561
`
`
`
`
`
`
`
`
`
`Number _1_ of _l_
`
`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 PTO-2038.
`
`ZTE/SAMSUNG 1003-0002
`ZTE/SAMSUNG 1003-0002
`IPR2018-00110
`|PR2018-00110
`
`
`
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`Title of the Invention
`
`System and Method for Adapting a USB to Provide Power for Charging a
`Mobile Device
`
`Inventors
`
`Daniel M. Fischer
`
`Dan G. Radut
`
`Mke Habicher
`
`Quang Luong
`Jonatahan Malton
`
`
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0003
`ZTE/SAMSUNG 1003-0003
`IPR2018-00110
`|PR2018-00110
`
`
`
`TITLE OF INVENTION
`
`System and Method for Adapting a USB to Provide Power for
`
`Charging a Mobile Device
`
`FIELD OF INVENTION
`
`This invention relates to rechargeable mobile devices having
`
`access to a Universal Serial Bus (USB).
`
`In particular, this invention
`
`relates to adapting power from the USB for use as a power source by
`
`the charging system of the mobile device to re-charge the portable
`
`power supply of the mobile device.
`
`BACKGROUND OF THE INVENTION
`
` communications bus for connecting a USB host controller such as a
`
`On one
`
`hand,
`
`the Universal Serial Bus
`
`(USB)
`
`is
`
`a
`
`computer to peripheral devices. USB peripheral devices can be
`
`differentiated based on how they obtain their power in order to
`
`operate while connected. A self-powered peripheral has access to a
`
`power supply external to USB, whereas a bus-powered peripheral
`
`
`
`ll'.}l.-|'r...‘.‘-
`
`
`
`Linii....fiiiv=ii...ii
`
`derives all of its power from the USB.
`
`On the other hand. traditional mobile devices usually have a
`
`portable power supply that provides power to the mobile device while
`
`it is in service. Some portable power supplies are rechargeable so
`
`that when power is depleted and the portable power supply becomes
`
`discharged, a charging system can be used to restore the charge in
`
`the portable power supply. The charging system obtains power from
`
`an alternate power source, such as an AC outlet of a home or office
`
`electricai network, in order to recharge the portable power supply.
`
`5552554312432
`
`_ 2-
`
`ZTE/SAMSUNG 1003-0004
`ZTE/SAMSUNG 1003-0004
`IPR2018-00110
`|PR2018-00110
`
`
`
`Certain rechargeable mobile devices use a separate charging
`
`system such as a docking cradle. Other rechargeable mobile devices
`
`integrate a built-in charging system in order to facilitate recharging
`the portable power supply while it is still installed in the mobile device.
`Recently the hitherto separate fields of USB and mobile devices
`
`have collided. Certain rechargeable mobile devices have evolved to
`
`access USB capabilities in order to become USB peripherals for the
`
`purpose of communicating with USB host controllers such as a
`computer.
`In some cases, USB capabilities have been incorporated
`into the docking cradle, whereas in other cases USB capabilities have
`
`been integrated into the rechargeable mobile device itself,
`
`in a
`
`manner analogous to the location of the traditional charging system.
`
`Traditional rechargeable mobile devices having a USB already
` have access to two power supplies, specifically a portable power
`supply and an alternate power supply. Therefore USB capable
`
`rechargeable mobile devices traditionally operate as self-powered
`
`1:”
`
`M"!
`
`USB peripherals.
`
`There is a need for a system and method of adapting the
`
`charging system of a USB capable rechargeable mobile device to use
`
`the power traditionally available on the USB as an alternate power
`
`source for recharging the portable power supply of the mobile device
`
`thereby eliminating the need for a separate charging and USB
`
`interfaces.
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0005
`ZTE/SAMSUNG 1003-0005
`IPR2018-00110
`|PR2018-00110
`
`
`
`BRIEF SUMMARY OF INVENTION
`
`It is an object of the invention to provide a system and method
`
`of adapting the charging system of a USB capable rechargeable
`
`mobile device to use the power traditionally available on the USB as
`
`an alternate power source for recharging the portable power supply of
`
`the mobile device.
`
`Traditionally, the alternate power supply is of a much greater
`
`power capacity than the portable power supply, so that as much
`current as is needed can be drawn from the alternate power supply
`
`by the charging system in order to re-charge the portable power
`
`supply.
`
` self-powered peripherals. The exact amount of current available
`
`However, power traditionally available on the USB is iOOmA to
`
`500mA at 5V, which sometimes has to be shared amongst up to 127
`
`: :5
`
`ii"it]?ii-
`
`varies as peripherals are connected and disconnected from the USB.
`
`In one embodiment of the invention, a charging circuit directly
`
`attached to the USB power lines draws current without regard to
`
`traditional USB functionality.
`
`In another embodiment of the invention, a charging circuit uses
`
`a current analogous to the current being drawn from the USB on the
`
`Vbus rail. Several elements of the invention are provided by an ASiC
`
`thereby facilitating manufacture.
`
`In yet another embodiment of the invention, the USB interface
`
`accessible to the mobile device isfurther adapted in order to favour
`
`two modes of operation: charging mode and communications mode.
`
`Further features of
`
`the invention will be described or will
`
`become apparent in the course of the following detailed description.
`
`555255-012-132
`
`-4-
`
`ZTE/SAMSUNG 1003-0006
`ZTE/SAMSUNG 1003-0006
`IPR2018-00110
`|PR2018-00110
`
`
`
` II
`
`
`
`
`
`
`
`Il...iiIra....iIL...:I;::i;
`
`BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE
`
`DRAWING
`
`In order that the invention may be more clearly understood.
`
`embodiments thereof will now be described in detail by way of
`
`example. with reference to the accompanying drawings, in which:
`
`Figure 1
`
`is a block diagram illustrating a non-enumerating
`
`embodiment;
`
`Figure 2 is a block diagram illustrating an enumerating
`
`embodiment;
`
`Figure 3 is a flowchart illustrating an enumerating method;
`
`Figure 4 is a block diagram illustrating a current sensing
`
`embodiment, which can be used for both enumerating and non-
`
`enumerating purposes;
`
`Figure 5 is a typical charge and voltage curve which illustrates
`
`a current-sensing method; and
`
`Figure 6 is a flowchart which further illustrates a current-
`
`sensing method.
`
`II"IIJLIII
`
`
`
`Isl.fini'iii'.:.'..inn?
`
`
`
`
`
`II"
`
`DETAILED DESCRIPTION OF THE INVENTION
`
`NON—ENUMERATING EMBODIMENT
`
`In one embodiment of the invention, a Li battery is charged by
`
`using the power available at a high-powered USB port. making no
`
`use of the D+ and 0- data lines. A charger apparatus, such as a
`
`linear charger based on the LTC’1734 charge controller,
`
`is used in
`
`this embodiment.
`
`In reference to Figure 1. a USB interface 100 comprising a
`
`Vbus power line 100, D+ data line 120, D— data line 130 and GND
`
`555255-0124 32
`
`ZTE/SAMSUNG 1003-0007
`ZTE/SAMSUNG 1003-0007
`IPR2018-00110
`|PR2018-00110
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`
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`n:EHEZEIll...“Iiijt'
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`
`
`
`
`ii»u'.:i"ii...iiiI;.';..in;
`
`
`U."ll.H!|'-ll...“II'II..-'l...i|
`
`power line 140 is connected to a charging circuit 400 via the Vbus
`
`110 and GND 140 power lines. A battery 500,
`
`to be charged,
`
`is
`
`connected at it’s positive ent to the charging circuit 400, and at its
`
`negative end to the GNU power line 140.
`
`It was determined experimentally that current can be drawn
`
`from several USB ports at a high rate, such as 500mA, without
`
`problem. As used in this description and in the appended claims, a
`
`high-power USB port is a USB port which can provide around 500mA
`
`to be drawn by the invention. Typical means of providing a high-
`
`power USB port are ensuring that the invention is the only USB
`
`device to attach to the USB port of a desktop computer, a laptop
`
`computer, or a self-powered hub.
`
`First the charger is attached to the power lines of a high-
`
`powered USB port, such as that of a desktop computer. An open
`
`voltage value is measured on the USB prior to charging operation.
`
`This was about 5.16V in experiments.
`
`Next, the battery is charged by drawing current at a rate of
`
`around 490mA.
`
`The start of charge can be detected by observing that the Vbus
`
`voltage value settles to a charging voltage value. This was about
`
`4.76V in experiments.
`
`Finally, when the Vbus reaches its open value,
`
`the end of
`
`charge condition is detected. This was about 5.16V in experiments.
`
`Additionally, when charging from the USB port of a portable
`
`computer, such as a laptop, after charging at the same rate (490mA )
`
`the Vbus voltage value settled to a charging voltage of about 4.65V.
`
`The difference between this laptop charging voltage value and the
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0008
`ZTE/SAMSUNG 1003-0008
`IPR2018-00110
`|PR2018-00110
`
`
`
`
`
`
`
`ll"Li...iiii“iii...riEE:.':.ii..ii
`
`
`
`
`
`desktop charging voltage value can be used to sense what type of
`
`high-powered device the invention is attached to.
`
`Furthermore, still
`
`in the case of a laptop.
`
`the USB voltage
`
`disappears when the internal
`
`laptop batteries were "completely”
`
`discharged. The voltage is present again immediately after the laptop
`
`is attached to its charger. Therefore, the invention adapts both the
`
`batteries of a laptop and the power adapter of the laptop to provide
`
`power to a rechargeable mobile device via the USB port.
`
`Furthermore, it seems that certain high-power USB ports, such
`
`as a self-powered hub, appear to implement only an over-current
`
`protection, i.e. they turn off the voltage on the Vbus line for current
`
`values exceeding 700mA-BOOmA.
`
`Thus a battery charger limiting its charge current value to
`
`500mA can be powered from a high-power USB port without being
`
`necessary to be enumerated by the host, although such a device is
`
`not currently compatible with the current USB standard.
`
`ENUMERATING EMBODIMENT
`
`In another embodiment of the invention,
`
`the USB interface
`
`accessible to the mobile device is further adapted in order to favour
`
`two modes of operation: a charging mode and the traditional
`
`communications mode. The traditional communications mode of
`
`operation of a USB peripheral
`
`is described in great detail
`
`in the
`
`current USB standard and is not discussed presently as it is obvious
`
`to a person skilled in the art. Both modes could be operated
`
`contemporaneously by a skilled person consulting both the standard
`
`and this specification, however this specification will positively set out
`
`and describe the charging mode.
`
`555255-012-132
`
`—7—
`
`ZTE/SAMSUNG 1003-0009
`ZTE/SAMSUNG 1003-0009
`IPR2018-00110
`|PR2018-00110
`
`
`
`
`
`.15....-r.':;:ii...ii';:::ir
`
`
`
`
`
`
`
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`
`
`
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`
`l|...|1
`
`In reference to Figures 2, one embodiment of a system used in
`
`In
`the charging mode will be described presently in greater detail.
`this embodiment,
`all
`lines of USB interface 100 are utilized.
`
`Specifically, the data D+ 120 and D- 130 lines are utilized to provide
`data communication between a USB controller (not shown) and a
`
`micro processor 200 of the present invention. The microporoessor
`200 selectively controls soft-disconnect signal 120 to cause soft-
`
`disconnect means means 210, such as a pair of electrically controlled
`
`switches to either connect or disconnect the microprocessor from the
`
`USB Interface 100. Microprocessor 200 also communicates with
`
`power level limiting means 300 via set power level signal 220. The
`power level limiting means 300, such as the switched current divider
`formed by a plurality of first resistor 330 and switch 340, and a single
`
`second resistor 350. provides a power signal 310, such as a
`
`reference current.
`
`to charging circuit 400. Charging circuit 400 is
`
`connected to power lines Vbus 110 and GND 140. and provides
`
`power to an attached battery 500 which is electrically connected at
`one end to the charging circuit 400, and at the other to the GND line
`
`140 of the USB interface.
`
`In charging mode, the mobile device USB interface operates as
`
`a bus-powered peripheral
`
`interface,- with a temporary disregard to
`
`communications functionality in favour of obtaining the maximum
`
`amount of current from the USB host controller.
`
`A method of use of the system illustrated in Figure 2 will be
`
`described presently,
`
`in reference to Figure 3. At step 600,
`
`the
`
`microporcessor 200 sets power level signal 220 to a minimum value,
`
`such as 0 mA. At step 610, the microprocessor sets a requested
`
`555255-012-132
`
`-8-
`
`ZTE/SAMSUNG 1003-0010
`ZTE/SAMSUNG 1003-0010
`IPR2018-00110
`|PR2018-00110
`
`
`
`the
`power to a maximum value, such as SODmA. At step 620,
`microprocessor 200 sends soft-disconnect signal 210 so that a
`
`connection to the USB interface is detected by a USB controller,
`
`which was not expressly shown in Figure 2.
`
`At step 630, the microprocessor monitors data lines 0+ 120 and
`
`D— 130 and waits for the enumeration process to begin. At step 640,
`
`When connecting, during the enumeration process,
`
`the USB host
`
`controller obtains a power request from the mobile device USB
`
`peripheral interface. However, the USB host controller might not allot
`
`the amount requested, and at Step 650 this is determined.
`
`In order to maximize the likelihood of obtaining a large power
`
`allotment, the mobile device USB peripheral interface is capable of
`
` force a new enumeration process as if a user had unplugged and
`
`electrically disconnecting and reconnecting using switches in order to
`
`‘
`
`Ilfi'...!
`ll"l'!‘..|'
`EI...“
`it-
`
`then plugged in the mobile device USB interface to the USB host
`
`controller. This is accomplished by steps 670 and 680 respectively,
`
`after which the method continues at step 620.
`
`By comparing the amount of power requested and the amount
`
`of power allotted,
`
`the mobile device USB interface can determine
`
`whether or not to disconnect and attempt a request for less power.
`
`When the amount of power obtained corresponds with the amount of
`
`power allotted,
`
`the USB interface can proceed to operate in
`
`communications mode. This occurs at step 660, after which the
`
`method ends.
`
`In communications mode, one additional element is taught by
`
`the invention over a traditional USB device taught by the standard.
`
`The mobiie device USB interface operates as a traditional USB
`
`5552554312432
`
`-9-
`
`ZTE/SAMSUNG 1003-0011
`ZTE/SAMSUNG 1003-0011
`IPR2018-00110
`|PR2018-00110
`
`
`
`
`
`;;:|l...l17:33.
`
`
`
`peripheral interface favouring traditional communications wherein the
`
`mobile device acts as either a
`
`self-powered or bus-powered
`
`peripheral, depending on the charge state of the portable power
`
`supply.
`
`If the portable power supply is sufficiently charged,
`
`the
`
`mobile device can act as a self-powered peripheral bypassing the
`
`charging mode. Conversely, if the portable power supply needs to be
`
`recharged, the mobile device can disconnect electrically and act as a
`
`bus-powered peripheral.
`
`CURRENT SENSING EMBODIMENT
`
`In reference to Figures 4-5, a third embodiment of the present
`
`invention will be described. The Charger Current Sense block 710
`
`provides a signal 717 to the Charge Control block 732 analogous to
`
`the current being drawn from the USB on the Vbus rail. The Charge
`
`Control block 732 uses this signal 717 to turn on the linear pass
`
`element 727. such as a bipolar transistor,
`
`to a greater or lesser
`
`degree by signal 727 as necessary in order that the total current does
`
`not exceed that required by the system.
`
`In the case of USB, this is
`
`for example either toomA or 500mA.
`
`in addition and as a parallel
`
`control, the Charge Control block 732 monitors the battery voltage
`
`level via the V_BAT 750 input, and controls the input current via the
`
`linear pass element 720 such that the battery voltage does not
`
`exceed the specified maximum, such as for example 4.20V. The
`
`Charge Control 732 block periodicaliy inhibits delivery of current to
`
`the battery by switching off the linear pass element 720, and briefly
`
`monitoring the battery level at V_BAT 750. This information is used
`
`to determine whether the linear pass element 720 should control
`
`solely the input current, such as monitored by the Charger Current
`
`5552554112432
`
`-10-
`
`ZTE/SAMSUNG 1003-0012
`ZTE/SAMSUNG 1003-0012
`IPR2018-00110
`|PR2018-00110
`
`
`
`Sense block 710, or the input current and the battery voltage during
`
`the following “charge on” cycle, which will be described in further
`
`detail in reference to Figure 5 below.
`
`In the absence of input power at the Vbus 110, the Charge
`
`Control block 732 sets the switch 720 so that the first regulator 736
`
`and second regulator 738 connect
`
`to and draw power from the
`
`battery 500 via the V_BAT 750 input.
`
`in order that the microprocessor 740 can monitor and control
`
`the charge system operation.
`
`the actual current delivered to the
`
`battery 500 is monitored by the Cell Current Sense block 760. This
`
`block produces a signal iSENSE_BAT 755 that is analogous to the
`
`ME;.'.:.ii
`actual charge current, and which is converted by an analog-to-digitai
`i;::..mi.utif
` converter, which is not explicitly shown in the drawing but
`comprised in Charge Control biock 732, and which may be read
`
`is
`
`limitE[:::,.ii.,.ii
`
`ii...iiii-
`if;
`
`serially by the microprocessor on a serial interface, which is atso not
`
`shown explicitly in the drawings.
`
`in order to favour manufacturing, a specification for an ASiC
`
`730 to be known as Esker is provided in an appendix. The A810
`
`device performs charging, battery monitoring,
`
`low dropout voltage
`
`regulation, system reset control, and integration of a few other power
`
`consuming functions such as proximity sensor, vibrator, and buzzer.
`
`LDOs 736,738 are Low Drop-Out regulators.
`
`An LDO is
`
`typically a linear regulator that can manage to keep its output within
`
`regulation tolerance, while the input fails to only a small amount
`
`above the output voltage. Note that regulator 738 may be a buck
`
`switching regulator external to Esker, as it might need to supply more
`
`current than a linear regulator could handle without overheating.
`
`ssszssonom
`
`_1 1-
`
`ZTE/SAMSUNG 1003-0013
`ZTE/SAMSUNG 1003-0013
`IPR2018-00110
`|PR2018-00110
`
`
`
`in an embodiment using Esker. charge termination will be
`
`performed by the microprocessor, as the charge current will be
`
`monitored.
`
`Note that the Charge Control block 732 also operates an
`
`electronic switch 727 when voltage is detected at the Vbus input 110.
`
`This switch diverts power as necessary from the source to operate
`
`the regulators 738.738 powering the microprocessor 740, in order to
`
`ensure that it is possible. even in the case of a severely discharged
`
`lithium battery 500, that the necessary communications and charge
`
`management functions may be performed.
`
`One significant
`
`innovation in the configuration illustrated in
`
` current is used as the means for controlling (limiting) the system input
`
`Figure 4 is that the controlled parameter is system input current,
`
`rather than battery charge current. Varying of the battery charge
`
`current,
`
`thereby compensating for varying power drawn by the
`
`microprocessor.
`
`in reference to Figure 5, a "periodic charge” and “battery
`
`voltage compensation” method using the system of Figure 4 is
`
`illustrated in great detail. A battery voltage curve 800 and battery
`
`current curve 900 which illustrate the method of charging are
`
`depicted. A constant charge current 910. such as in this example
`
`500mA,
`
`is delivered to the battery until during a constant charge
`
`current period 1000, for instance during the first five constant charge
`
`current cycles 1010A,B.C,D,E in the figure. Between each cycle, the
`
`current
`
`is
`
`stopped 920A,B,C,D.E,F and the battery voltage
`
`820A,B,C,D,E,F (which climbs during charging) is measured. At the
`
`end of
`
`the constant charge current period 1000,
`
`the voltage
`
`555255-012-132
`
`-12-
`
`ZTE/SAMSUNG 1003-0014
`ZTE/SAMSUNG 1003-0014
`IPR2018-00110
`|PR2018-00110
`
`
`
`820A,B,C,D,E is sampled to be at or above a critical threshold, such
`
`as 4.2V 820F. In the next cycles 1510A,B,C.D, the charge current is
`
`regulated such that the voltage 830 stays approximately constant
`
`during a constant voltage period 1500. When the sampled current
`
`930A,B,C reaches a cirtical
`
`threshold, such as 50mA 930D,
`
`the
`
`charging method finishes. The current is still set to zero between
`
`constant current charging cycles 935A,B,C,D.
`
`This method is illustrated further in Figure 6 with a flowchart. At
`
`step 1020,
`
`the charge current is set to zero. This corresponds to
`
`points 920 of Figure 5. At step 1030, the voltage is sampled 820. At
`
`
`
`1;:1i....r'I
`
`step 1030, the sampled voltage is compared to a threshold, such as
`
`4.20 V. in the event that the sampled voltage is below the threshold,
`
`
`
`
`
`-'l'...l|ii,I-i.-.1!.I...
`
`
`
`at step 1050 a constant current charging cycle as described above in
`
`reference to Figure 5 ensues, aftewhich the method continues at step
`
`1020. However, in the event that the sampled voltage is determined
`
`to be above or equal
`
`to the threhold at step 1030,
`
`the method
`
`continues at step 1520 in constant current charging mode 1500. At
`
`step 1520, a constant current charge cycle, as described above in
`
`reference to Figure 5 ensures. At step 1530,
`
`the current 930 is
`
`sampled. At step 1540, the current 935 is set to zero. At step 1550,
`
`the sampled current 930 is compared to a threshold. In the event that
`
`the current is greater than the threshold, the method continues at
`
`step 1520.
`
`in the event that the sampled current 930 is below the
`
`threshold, the method ends.
`
`it will be appreciated that
`
`the above description relates to
`
`embodiments by way of example only. Many variations on the
`
`invention will be obvious to those knowledgeable in the field, and
`
`555255-012-132
`
`—l3-
`
`ZTE/SAMSUNG 1003-0015
`ZTE/SAMSUNG 1003-0015
`IPR2018-00110
`|PR2018-00110
`
`
`
`such obvious variations are within the scope of the invention as
`
`described and claimed, whether or not expressly described.
`
`
`
`555255012432
`
`-1 4-
`
`ZTE/SAMSUNG 1003-0016
`ZTE/SAMSUNG 1003-0016
`IPR2018-00110
`|PR2018-00110
`
`
`
`CLAIMS
`
`
`
`555255-012-132
`
`—15--
`
`ZTE/SAMSUNG 1003-0017
`ZTE/SAMSUNG 1003-0017
`IPR2018-00110
`|PR2018-00110
`
`
`
`ABSTRACT
`
`
`
`
`
`||-r|-..1='I'.E.-4.:ll
`
`H-||...|i
`
`555255-012-132
`
`-15-
`
`ZTE/SAMSUNG 1003-0018
`ZTE/SAMSUNG 1003-0018
`IPR2018-00110
`|PR2018-00110
`
`
`
`F1 00
`
`110
`
`I'
`
`
`J
`
`USB Interface
`
`Gnd
`
`Vbus A120
`0+ /130
`D-
`140
`
`hi
`
`\iV
`
`harging Circuit
`
`[140
`
`Battery
`
`140
`
`
`
`—-'l'
`
`ii...li"rah
`
`IKE};
`
`iiiii;nail“
`
`[110
`
`
`
`
`
`Um““IT...1!...“
`
`II"ll-nll'
`
`555255-0124 32
`
`L.
`.400
`
`500
`
`Figure 1
`
`ZTE/SAMSUNG 1003-0019
`ZTE/SAMSUNG 1003-0019
`IPR2018-00110
`|PR2018-00110
`
`
`
`100
`
`L110
`
`mag/go
`
`W
`[130
`0. / 140
`
`
`Micro Processor
`
`200
`
`
`
`
`
`
`
`
`
`
`
`
`Set Power Level
`
`-—[220
`
`USB Interface
`
`Charging Circuit
`
` ri-
`
`iimii
` =.-‘-=,
`.1..-
`
`nnii...ji
`
`Figure 2
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0020
`ZTE/SAMSUNG 1003-0020
`IPR2018-00110
`|PR2018-00110
`
`
`
`Set Charge Power
`to Minimum
`
`500
`
`
` Soft-Connect to
`
`
`Set Requested
`Power to
`
`510
`
`
`
`Maximum
`
`
`Y
`
`620
`
`the USBus
`
`
`
`
`Wait for use /[630
`Enumeration
`process
`
`
`
`
`Request Power
`640
`
`when Enumerated '
`by USB controller
`
`
`
`
`
`650
`
`Yes—I‘-
`
`to Requested
`
`
`
`
`
`
` Set Charge Powgr
`[flu
`
`Alloted Power >=
`
`Requested Power
`
`No
`
`
`
`
`
`
`
`Lower Requested
`Power
`
`
`
`
`
`
`Soft-disconnect
`
`
`
`6TB
`
`680
`
`555255—012-132
`
`Figure 3
`
`ZTE/SAMSUNG 1003-0021
`ZTE/SAMSUNG 1003-0021
`IPR2018-00110
`|PR2018-00110
`
`
`
`r710
`
`
`
`Charger Current
`Sense
`
`.
`
`
`
`
`
`
`
`Cell Current
`Sense
`
`
`
`Core
`
`_
`
`
`
`
`
`
`|
`
`Switcher;r
`
`LDO
`
`Esker
`
`[jg-38
`
`Microprocessor
`
`Figure 4
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0022
`ZTE/SAMSUNG 1003-0022
`IPR2018-00110
`|PR2018-00110
`
`
`
`H2f
`
`l}|...l—
`
`Voltage Compensation
`
`
`
`[91o
`
`--—Terminal Voltage
`
`-—-— Charge Current
`
`S0
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0023
`ZTE/SAMSUNG 1003-0023
`IPR2018-00110
`|PR2018-00110
`
`
`
`Start
`
`89’: Current to o
`
`"1020
`
`Sample Voltage
`
`103D
`
`1520
`
`
` Battery Voltage <
`[1050 HE Constant Current
`Voltage Threhotd?
`I Charging Cycle
`
`
`Yes
`
`J Approximately
`Constant Voltage 4——————-
`Charging Cycle
`
`
`
`
`
`
`
`
`
`
`
`1
`
`1530
`
`Sample Current
`
`f Yes
`1540
`
`Set Current to 0
`
`Battery Current >
`Current Threshold ?
`
`
`
`[1550
`
`NO
`
`End
`
`Figure 6
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0024
`ZTE/SAMSUNG 1003-0024
`IPR2018-00110
`|PR2018-00110
`
`
`
`Attorney Docket No. 555255012132
`
`PATENT
`
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`In re Application of: Daniel M. Fischer
`Dan G. Radut
`Michael F. Habicher
`
`Quang Luong
`Jonathan Malton
`
`Application No:
`
`Not Yet Assigned
`
`Filed:
`
`For:
`
`Herewith
`
`SYSTEM AND METHOD FOR ADAPTING A USE TO PROVIDE
`POWER FOR CHARGING A MOBILE DEVICE
`
`
`
`
`
`POWER OF ATTORNEY FOR PROVISIONAL APPLICATION
`
`Each inventor, identified above and signing below, hereby appoints each of the
`following as my attorneys with full power of substitution and revocation, to prosecute this
`application and to transact all business in the Patent and Trademark Office connected therewith:
`
`David B. Cochran, Registration N0. 39,142; Kenneth R. Adamo, Registration No. 27,299;
`John V. Biemacld, Registration No. 40,511; Barbara Amdt, Registration N0. 37,768;
`Regan J. Fay, Registration No. 26,878; F. Drexel Feeling; Registration No. 40,602;
`Calvin P. Griffith, Registration No. 34,831; Warren M. Haines 11, Registration No.
`40,632; Shawn A. McClintic, Registration No. 45,856; Timothy]. O‘Hearn, Registration
`No. 31,552; Stephen D. Scanlon, Registration N0. 32,755; Jenny L. Sheaffer, Registration
`No. 45,099; Duane Switzer, Registration No. 22,431; Michael W. Vary, Registration No.
`30,811; and James L. Warnsley, 111, Registration No. 31,578;
`
`all of the firm of Jones, Day, Reavis 8: Pogue, North Point, 901 Lakeside Avenue, Cleveland,
`Ohio 44114; Krishna K. Pathiyal, Registration No. 44,435, Research In Motion Limited, 295
`Phillip Street. Waterloo, Ontario, Canada N2L 3W8; and Charles B. Meyer, Registration No.
`33,563, Research In Motion Limited, 25227 Grogan's Mill Road, Suite 125, The Woodlands,
`Texas 77380.
`
`Page 1 of 2
`
`ZTE/SAMSUNG 1003-0025
`ZTE/SAMSUNG 1003-0025
`IPR2018-00110
`|PR2018-00110
`
`
`
`I hereby designate the following as my mailing address and telephone number:
`
`David B. Cochran, Esq.
`Jones. Day, Reavis & Pogue
`North Point, 901 Lakeside Avenue
`Cleveland, Ohio 44114
`(216) 586-3939
`
`Each inventor, identified above and signing below, authorizes the above named attorney(s) andt'or
`agents to accept and follow instructions from hislher representative(s).
`
`‘1 0‘
`Date: FC
`Date: iyb_U_iq"
`
`Inventmfs)
`Daniel M. Fischer
`Dan G. Radut
`
`QCOF OuangLuong 0533:
`
`
`Date:M Michael F. Habicher
`Date: ‘1 “‘ "
`
`Jonathan Malton
`
` :&
`
`E!
`
`Page 2 of 2
`
`ZTE/SAMSUNG 1003-0026
`ZTE/SAMSUNG 1003-0026
`IPR2018-00110
`|PR2018-00110
`
`
`
`Confidential & Proprietary Information
`
`Preliminary Information H "-1-.
`
`Vendor Part #:
`
`Esker ASIC Specification
`ANA-03126-002
`Mike Habichor, mikch@1im.net, x2207
`16-Feb-22 001
`03126002, rev B
`
`Project:
`ASIC Pan #:
`Author:
`Date:
`Document:
`Vendor:
`
`Esker ASIC Specification
`Pl!" ,
`A égfti
`
`Research in Motion, Ltd.
`
`295 Phillip Street
`Waterloo, ON N15 4N2
`Canada
`
`Tcl.:
`Fax:
`
`+1 519 888-7465
`+1 519 838—6906
`
`ii.
`
`
`
`
`
`
`Copyright © 1999—2003, Research in Motion, Ltd.
`All Rights Reservcd.
`61176:":(17 fir-MCI“
`
`Page 1
`
`F'c'ln'n- 11 QIF Quarifipntinn
`
`ZTE/SAMSUNG 1003-0027
`ZTE/SAMSUNG 1003-0027
`IPR2018-00110
`|PR2018-00110
`
`
`
`
`
`
`Confidential & rroprietary Information
`
`Preliminary Information
`
`1 Table of Contents
`
`1
`2
`3
`4
`5
`
`6
`
`TABLE OF CONTENTS ...................................................................................................................... 2
`LIST OF TABLES ......................
`
`LIST OF FIGURES ............................................................................
`DOCUIVIENT HISTORY ...................................................................
`
`INTRODUCTION ......................
`SCOPE ........................................................................................................................................ 7
`5.1
`
`5.2
`
`5.3
`
`TECHNICAL CONTACTS .............................................................................................................. 7
`
`FUNCTIONAL DESCRIPTION ........................................................................................................ 7
`
`5.4
`
`REFERENCES .............................................................................................................................. 7
`
`REQIHREMENTS ........................................................................................................... 8
`6.1
`GENERAL ................................................................................................................................... 8
`
`6. i .1
`
`BlockDiogrom ................................................................................................................ 8
`
`6.1.2
`
`Pin Descriptions ..........................................