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`PROVISIONAL APPLICATION FOR PATENT COVER SHEET
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`
`INVENTOR(S)
`
`Family Name or Surname
`Fischer
`
`Residence
`(City and either State or Foreian Countrvl
`303-276 Eiwo Ct.
`Waterloo, Ontario, CANADA N2K 3M6
`
`tJ
`I")
`
`~ Additional inventors are being named on the _L separately numbered sheets attached hereto
`TITLE OF THE INVENTION 1280 characters maxl
`SYSTEM AND METHOD FOR ADAPTING A USB TO PROVIDE
`POWER FOR CHARGING A MOBILE DEVICE
`
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`Jones, Day, Reavis & Pogue
`North Point, 901 Lakeside Avenue
`I ZIP I 44114
`I OH
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`us
`I Teteohone 1216/586-39391 Fax 1216/579-0212
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`provisional application. Confidentiality is governed by 35 U.S.C. 122 and 37 CFR 1.14. This collection is estimated to take 8 hours to
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`I 39,142
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`ZTE/SAMSUNG 1003-0001
`IPR2018-00111
`
`

`

`PROVISIONAL APPL/CATION COVER SHEET
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`
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`inside this box ~ +
`Dod<et Number 55525501213 2
`INVENTOR(S)/APP UCANT(S)
`
`I Type a plus sign (+) I
`
`Given Name (first and middle lif anvil
`
`Famitv or Surname
`
`Dan G.
`
`Michael F.
`
`Quang
`
`Radut
`
`Habicher
`
`Luong
`
`Jonathan
`
`Malton
`
`i:
`
`Residence
`ICitv and either State or Foreian Countrvl
`300 Regina St. N., 1-1207
`Waterloo, Ontario , CANADA N2J 3B8
`
`27 Ronald Road
`Cambridge, Ontario, CANADA NlS 4N2
`
`94 Fairway Road
`Unit 10
`Kitchener, Ontario , CANADA N2A 2N5
`
`100 Highland Cr.
`Kitchener, Ontario, CANADA N2M 5Cl
`
`Number _l_ of _l_
`
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`be included on this form. Provide credit card information and authorization on PT0-2038.
`
`ZTE/SAMSUNG 1003-0002
`IPR2018-00111
`
`

`

`IN THE UNITED STA TES 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
`Mike Habicher
`Quang Luong
`Jonatahan Malton
`
`;j
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0003
`IPR2018-00111
`
`

`

`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
`In particular, this invention
`access to a Universal Serial Bus (USB).
`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
`is a
`(USB)
`the Universal Serial Bus
`On one hand,
`communications bus for connecting a USB host controller such as 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
`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
`electrical network, in order to recharge the portable power supply.
`
`555255-012-132
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`

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`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
`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
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`- 3-
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`ZTE/SAMSUNG 1003-0005
`IPR2018-00111
`
`

`

`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.
`However, power traditionally available on the USB is 1 OOmA to
`500mA at SV, which sometimes has to be shared amongst up to 127
`self-powered peripherals. The exact amount of current available
`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
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`-4-
`
`i!
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`ZTE/SAMSUNG 1003-0006
`IPR2018-00111
`
`

`

`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(cid:173)
`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(cid:173)
`sensing method.
`
`t:J
`I·:!.
`
`DETAILED DESCRIPTION OF THE INVENTION
`
`N ON-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 O+ and 0- data lines. A charger apparatus, such as a
`linear charger based on the L TC1734 charge controller, is used in
`this embodiment.
`In reference to Figure 1, a USB interface 100 comprising a
`Vbus power line 100, O+ data line 120, 0- data line 130 and GNO
`
`555255..012-132
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`ZTE/SAMSUNG 1003-0007
`IPR2018-00111
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`

`

`...
`I'll
`"J
`!.~
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`
`'!.::S:
`
`;1
`
`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 it's
`negative end to the GND power line 140.
`It was determined experimentally that current can be drawn
`from several USB ports at a high rate, such as SOOmA, 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(cid:173)
`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(cid:173)
`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 obseNing 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
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`555255..() 12-132
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`ZTE/SAMSUNG 1003-0008
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`
`

`

`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-800mA.
`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
`the traditional
`two modes of operation: a charging mode and
`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-
`
`....
`....
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`l'l.I
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`t:l
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`ZTE/SAMSUNG 1003-0009
`IPR2018-00111
`
`

`

`, ..
`l"Fi
`
`In reference to Figures 2, one embodiment of a system used in
`In
`the charging mode will be described presently in greater detail.
`interface 100 are utilized.
`lines of USB
`this embodiment, all
`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 microporcessor
`200 selectively controls soft-disconnect signal 120 to cause soft(cid:173)
`disconnect means means 21 O, such as a pair of electrically controlled
`switches to either connect or disconnect the microprocessor from the
`USS 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 31 O, such as a
`reference current, to charging circuit 400. Charging circuit 400 is
`connected to power lines Vb us 11 O and G ND 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 O mA. At step 61 o, the microprocessor sets a requested
`
`555255-012-132
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`ZTE/SAMSUNG 1003-0010
`IPR2018-00111
`
`

`

`power to a maximum value, such as SOOmA. At step 620, the
`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 D+ 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
`electrically disconnecting and reconnecting using switches in order to
`force a new enumeration process as if a user had unplugged and
`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
`in
`to operate
`interface can proceed
`power allotted, the USB
`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 mobile device USB interface operates as a traditional USB
`
`555255-012-132
`
`-9-
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`!!
`
`ZTE/SAMSUNG 1003-0011
`IPR2018-00111
`
`

`

`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 71 O
`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
`
`In addition and as a parallel
`for example either 1 OOmA or 500mA.
`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 periodically 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
`
`555255-012-132
`
`-10-
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`ZTE/SAMSUNG 1003-0012
`IPR2018-00111
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`

`

`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 7 40 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
`actual charge current, and which is converted by an analog-to-digital
`
`converter, which is not explicitly shown in the drawing but is
`comprised in Charge Control block 732, and which may be read
`
`serially by the microprocessor on a serial interface, which is also 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 ASIC
`
`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 LOO is
`typically a linear regulator that can manage to keep its output within
`
`regulation tolerance, while the input falls 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.
`
`555255-012-132
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`

`

`t.i
`
`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 736. 738 powering the microprocessor 7 40, 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
`
`Figure 4 is that the controlled parameter is system input current,
`
`rather than battery charge current. Varying of the battery charge
`current is used as the means for controlling (limiting) the system input
`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 101 OA,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
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`555255-012-132
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`ZTE/SAMSUNG 1003-0014
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`

`

`•
`
`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 9300, 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
`
`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,
`
`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
`
`- 13-
`
`ZTE/SAMSUNG 1003-0015
`IPR2018-00111
`
`

`

`such obvious variations are within the scope of the invention as
`described and claimed, whether or not expressly described.
`
`•
`
`l'U
`"-!
`i.!J
`.....
`i''i
`!Li
`i·•
`
`555255-012-132
`
`- 14-
`
`ZTE/SAMSUNG 1003-0016
`IPR2018-00111
`
`

`

`CLAIMS
`
`555255-012-132
`
`-1 5-
`
`ZTE/SAMSUNG 1003-0017
`IPR2018-00111
`
`

`

`ABSTRACT
`
`ti , ... 1,J
`liJ
`f J
`1.:1.
`l.j
`I·•
`
`555255-0 12-132
`
`- 16-
`
`ZTE/SAMSUNG 1003-0018
`IPR2018-00111
`
`

`

`USB Interface
`
`D+ ~130
`140
`D·
`1 - - - - -
`Gnd
`
`[110
`
`[140
`
`Charging Circuit
`
`Battery
`
`400
`
`500
`
`Figure 1
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0019
`IPR2018-00111
`
`

`

`[ 215
`
`Soft-Disconnect
`
`210
`
`USB Interface
`
`Vb us
`
`D+
`
`0-
`
`Gnd
`
`Charging Circuit
`
`140
`
`400
`
`[ooo
`
`l' i i
`' ~
`
`Figure 2
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0020
`IPR2018-00111
`
`

`

`Start
`
`Set Charge Power
`to Minimum
`
`Set Requested
`Power to
`Maximum
`
`610
`
`Soft-Connect to
`theUSBus
`
`Wait forUSB
`Enumeration
`process
`
`i i
`
`Request Power
`when Enumerated
`by USS controller
`
`660
`
`Set Charge Power
`to Requested
`Power
`
`End
`
`No
`
`Lower Requested
`Power
`
`Soft-disconnect
`
`555255-012-132
`
`Figure 3
`
`ZTE/SAMSUNG 1003-0021
`IPR2018-00111
`
`

`

`!"
`
`(USB)
`
`710
`
`Charger Current
`Sense
`
`t~
`
`727
`
`[111
`
`V_CHG
`
`DRIVE
`
`[732 \~--~----.
`
`" I'" ;.-
`
`ISENSE
`
`Charge Control
`
`[736
`
`LOO
`
`Switcher/
`LOO
`
`750
`
`To PA
`
`V_BAT
`
`ISENSE_BAT
`
`755
`
`[soo-...
`
`Cell Current
`Sense
`
`_L
`
`760
`
`u• cell
`
`l140
`
`740
`
`110
`
`Core
`
`Esker
`
`[738
`
`Microprocessor
`
`Figure 4
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0022
`IPR2018-00111
`
`

`

`Voltage Compensation
`
`4.210 . . . - - - - - - - - - - - - - - - , . . . 2
`
`~ 4.195 +---
`
`-
`
`(0 = g 4. 190 +----+--++------
`
`- - i - - - --
`
`-
`
`-
`
`-
`
`-
`
`-
`
`-
`
`-
`
`-
`
`--1
`
`--!
`
`-= ~
`... u
`
`-Terminal Voltage
`-
`Charge Current
`
`(i
`
`'
`'
`i ::
`
`9300
`
`9350
`
`time
`
`920F
`
`Figure 5
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0023
`IPR2018-00111
`
`

`

`[1oso
`
`... ~.ii
`
`!J
`
`ll
`
`Start
`
`Set Current to 0
`
`1020
`
`1530
`
`Yes
`
`1540
`
`Sample Current
`
`Set Current to O
`
`[1sso
`
`No cb
`
`Figure 6
`
`555255-012-132
`
`ZTE/SAMSUNG 1003-0024
`IPR2018-00111
`
`

`

`~ ·
`
`Attorney Docket No. 555255012132
`
`PATENT
`
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`In re Application of: Daniel M. Fischer
`DanG. Radut
`Michael F. Habicher
`Quang Luong
`Jonathan Malton
`
`Application No.:
`
`Not Yet Assigned
`
`Filed:
`
`For:
`
`Herewith
`
`SYSTEM AND .METHOD FOR ADAPTING A USB TO PROVIDE
`POWER FOR CHARGING A MOBil..E 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 No. 39,142: Kenneth R. Adamo, Registration No. 27,299;
`John V. Biernacki, Registration No. 40,511; Barbara Arndt, Registration No. 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 II, Registration No.
`40,632; Shawn A. McClintic, Registration No. 45,856; Timothy J. O'Hearn, Registration
`No. 31,552; Stephen D. Scanlon, Registration No. 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. Wamsley, Ill, Registration No. 31,578;
`
`all of the firm of Jones, Day, Reavis & Pogue, North Point, 901 Lakeside A venue, 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 lof2
`
`ZTE/SAMSUNG 1003-0025
`IPR2018-00111
`
`

`

`.,.
`
`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 attomey(s) and/or
`agents to accept and follow instructions from his/her representative(s).
`
`Date: tc~ l~ { 0 \
`Date: lvf> i4/of
`Date: Iida t\ 'lfX>/ ·
`
`I
`
`Inventor(s)
`
`Daniel M. Fischer
`
`Dan G. Radut
`
`Michael F. Habicher
`
`Jonathan Malton
`
`'. ~:=
`
`Page 2of2
`
`ZTE/SAMSUNG 1003-0026
`IPR2018-00111
`
`

`

`Confidential & Proprietary Information
`
`Preliminary Information
`
`Esker ASIC Specification
`ANA-03126-002
`Mike Habicher, mikeh@rim.net, x2207
`16-Feb-2001
`03126002, rev B
`
`Project:
`ASIC Part#:
`Author:
`Date:
`Document:
`Vendor:
`Vendor Part#:
`
`Esker ASIC Specification
`
`Research in Motion, Ltd.
`295 Phillip Street
`Waterloo, ON NlS 4N2
`Canada
`
`Tel.:
`Fax:
`
`+1519 888-7465
`+J 519 888-6906
`
`Copyright© 1999-2000, Research in Motion, Ltd.
`All Rights Reserved.
`011?/;00? .r1 .... ~
`
`Pagel
`
`ZTE/SAMSUNG 1003-0027
`IPR2018-00111
`
`

`

`Confidential & Proprietary Information
`
`Preliminary Information
`
`1 Table of Contents
`
`5.2
`
`5.3
`
`rn
`!.~
`'
`
`TABLE OF CONTENTS ...................................................................................................................... 2
`1
`LIST OF TABLES ................................................................................................................................. 5
`2
`LIST OF FIGURES .......•....................................................................................................................... 5
`3
`4 DOCUMENT HJSTORY ...................................................................................................................... 6
`INTRODUCTION ................................................................................................................................. 7
`5
`SCOPE ........................................................................................................................................ 7
`5.1
`TECHNTCALCONfACTS .............................................................................................................. 7
`FUNCTIONAL DESCRlPTION ........................................................................................................ 7
`REFERENCES .............................................................................................................................. 7
`5.4
`6 REQUIREMENTS ................................................................................................................................ 8
`GENERAL ....•.•..•...............................................•..•..............•........••.••......................•.............•..... 8
`6.1
`Block Diagram ................................................................................................................ 8
`6.1.1
`6.1.2 Pin Descriptions ............................................................................................................. 9
`Packaging ..................................................................................................................... 12
`6.1.3
`6.1.4 ESD and Latch-Up ........................................................................................................ 12
`6.J.5 External Components .................................................................................................... 12
`6.1.5.1 Magnetics

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