PTO/SB/14 (07-07)
`Approved for use through 06/30/2010. OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection ofinformation unless it contains a valid OMB control number.
`
`
`Attorney Docket Number
`
`Application Data Sheet 37 CFR 1.76
`Application Number
`
`
`Proximity Sensor
`Title of Invention
`
`
`The application data sheetis part of the provisional or nonprovisional application for which it is being submitted. The following form contains the
`bibliographic data arranged in a format specified by the United States Patent and Trademark Office as outlined in 37 CFR 1.76.
`This document may be completed electrcnically and submitted to the Office in electronic format using the Electronic Filing System (EFS) or the
`document may beprinted and included in a paper filed application.
`
`Secrecy Order 37 CFR 5.2
`
`Portions or all of the application associated with this Application Data Sheet may fall under a
`Secrecy Order pursuantto
`37 CFR 5.2 (Paper filers only. Applications that fall under Secrecy Order may notbefiled electronically.)
`
`Information:
`Applicant
`
`Applicant 1
`ofInterest under 35 U.S.C. 118
`(Legal Representative under 35 U.S.C. 117
`Applicant Authority @)!nventor
`Party
`
`|
`
`
`Middle NamePrefix) Given Name Suffix Family Name
`
`
`Harald
`Philipp
`NonUS Residency
`Residence Information (Select One) ()
`
`Active US Military Service
`
`(©)
`
`US Residency
`
`(@)
`
`Citizenship under 37 CFR 1.41(b)i
`
`Mailing Address of Applicant:
`
`QRGLimited
`Address1
`
`
` 1 Mitchell Point, Ensign Way
`Address 2
`State/Province
`Hamble, Hampshire
`City
`|
`Postal Code
`
`|
`Countryi
`
`GB
`
`|
`
`S031 4RF
`
`
`
`Applicant 2
`ofInterest under 35 U.S.C. 118
`()Legal Representative under 35 U.S.C. 117
`
`(Party
`Applicant Authority (#)Inventor
`
`
`Family Name
`Prefix| Given Name
`Middle Name
`Kevin
`Snoad
`
`US Residency
`Active US Military Service
`Residence Information (Select One) ©)
`
`@) NonUSResidency
`GB
`()
`Chicester
`Country Of Residencei
`City
`
`|
`
`GB
`Citizenship under 37 CFR 1.41{b)i
`Mailing Address of Applicant:
`QRGLimited
`Address 1
`
`Suffix
`
`Address 2
`
`1 Mitchell Point, Ensign Way
`Hamble, Hampshire
`City
`S031 4RF
`Postal Code
`-
`
`State/Province
`
`GB
`
`Inventor Information blocks may be
`Additional
`Inventors Must Be Listed
`All
`generated within this form by selecting the Add button.
`
`CorrespondenceInformation:
`
`Enter either Customer Number or
`complete the CorrespondenceInformation section below.
`For further information see 37 CFR 1.33(a).
`An Addressis being provided for the correspondenceInformation of this application.
`[|
`EFS Web 2.2.2
`
`Petitioner STMICROELECTRONICS, INC.,
`1 of 342
`Ex. 1022, IPR2021-01161 Page
`
`
`
`
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 1 of 342
`
`

`

`PTO/SB/14 (07-07)
`Approved for use through 06/30/2010. OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Underthe Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
`
`QAP
`Attorney Docket Number
`
`—
`Application Data Sheet 37 CFR 1.76
`Application Number
`
`Title of Invention
`
`Proximity Sensor
`
`
`
`20191
`Customer Number
`
`Email Address
`
`
` dak@patent-faq.com
`
`Application Information:
`
`Proximity Sensor
`Title of the Invention
`
`Attorney Docket Number! QAP
`Small Entity Status Claimed
`
`[_|
`Nonprovisional
`
`Application Type
`Subject Matter
`Utility
`
`Suggested Class(if any) Sub Class(if any)
`
`
`
`
`10 17
`Total Number of Drawing Sheets(if any)
`Suggested Figure for Publication (if any}
`
`Suggested Technology Center (if any}
`
`Publication Information:
`[|] Request Early Publication (Fee required at time of Request 37 CFR 1.219)
`Request Not to Publish. | hereby request that the attached application not be published under 35 U.S.
`©. 122(b) and certify that the invention disclosed in the attached application has not and will not be the subject of
`an
`or under a multilateral international agreement, that requires publication at
`application filed in another country,
`eighteen months afterfiling.
`
`[]
`
`Representative information should be provided for all practitioners having a power of attorney in the application. Providing
`this information in the Application Data Sheet does not constitute a power of attorney in the application (see 37 CFR 1.32).
`or
`Enter
`either Customer Number
`section
`below.
`If
`both
`the Representative Name
`complete
`are completed the Customer Numberwill be used for the Representative Information during processing.
`
`Customer Number
`US Patent Practitioner
`Limited Recognition (37 CFR 11.9)
`Please Select One:
`
`©)
`
`CQ)
`
`sections
`
`()
`20191
`
`
`
` Representative Information:
`
`
`
`
`
`Customer Number
`
`Domestic Benefit/National Stage Information:
`This section allows for the applicant to either claim benefit under 35 U.S.C. 119(e}, 120, 121, or 365(c) or indicate National Stage
`entry from a PCT application. Providing this information in the application data sheet constitutes the specific reference required by
`35 U.S.C. 119{e) or 120, and 37 CFR 1.78{a)(2) or CFR 1.78(a)(4), and need not otherwise be madepart of the specification.
`Prior Application Status
`
`
`
`
`
`
`Application Number
`Prior Application Number
`Filing Date (YYYY-MM-DD)
`Continuity Type
`
`
`non provisional of
`
`
`60952053
`2007-07-26
`
`Additional Domestic Benefit/National Stage Data may be generated within this form
`An
`by selecting the Add button.
`
`
`
`
`
`Foreign Priority Information:
`EFS Web 2.2.2
`
`Petitioner STMICROELECTRONICS, INC.,
`2 of 342
`Ex. 1022, IPR2021-01161 Page
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 2 of 342
`
`

`

`
`This section allows for the applicant to claim benefit of foreign priority and to identify any prior foreign application for which priority is
`not claimed. Providing this information in the application data sheet constitutes the claim for priority as required by 35 U.S.C. 119(b)
`and 37 CFR 1.55(a).
`
`|
`Application Number
`Parent Filing Date (YYYY-MM-DD}
`Priority Claimed
`Country
`
`Yes
`No
`
`
`
`
`
`©
`
`@
`
`Add
`
`
`
`PTO/SB/14 (07-07)
`Approved for use through 06/30/2010. OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Underthe Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
`
`QAP
`Attorney Docket Number
`
`—
`Application Data Sheet 37 CFR 1.76
`Application Number
`
`Proximity Sensor
`
`Title of Invention
`
`Additional Foreign Priority Data may be generated within this form by selecting the
`Addbutton.
`
`Assignee Information:
`Providing this information in the application data sheet does not substitute for compliance with any requirementof part 3 of Title 37
`of the CFR to have an assignment recordedin the Office.
`
`Assignee1
`
`If the Assignee is an
`Organization check here.
`
`Organization Name
`QRGLimited
`
`Mailing Address Information:
`Rothman Pantall & Co.
`Address 1
`
`
`
`
`10 Romsey Road
`
`State/Province
`Eastleigh, Hampshire
`
`
`
`S050 9AL
`Postal Code
`
`Phone Number
`Fax Number
`
`
`Address 2
`
`City
`
`Email Address
`Additional Assignee Data may be generated within this form by selecting the Add
`button.
`
`Add
`
`Signature:
`representative is required in accordance with 37 CFR 1.33 and 10.18. Please see 37
`or
`A signature of the applicant
`CFR 1.4(d)} for the form of the signature.
`2008-07-25
`|/David A Kiewit/
`Date (YYYY-MM-DD)|
`Signature
`
`
`David
`Kiewit
`34640
`LastName
`Registration Number
`First Name
`
`
`This collection of information is required by 37 CFR 1.76. The information is required to obtain or retain a benefit by the public which
`is to file (and by the USPTC to process) an application. Confidentiality is governed by 35 U.S.C. 122 and 37 CFR 1.14. This
`collection is estimated to take 23 minutes to complete, including gathering, preparing, and submitting the completed application data
`sheet form to the USPTO. Time will vary depending upon the individual case.
`Any comments on the amountof time you require to
`complete this form and/or suggestions for reducing this burden, should be sent to the Chief Information Officer, U.S. Patent and
`Trademark Office, U.S. Department of Commerce, P.O. Box 1450, Alexandria, VA 22313-1450. DO NOT SEND FEES OR
`COMPLETED FORMS TO THIS ADDRESS. SEND TO: Commissionerfor Patents, P.O. Box 1450, Alexandria, VA 22313-1450.
`
`EFS Web 2.2.2
`
`Petitioner STMICROELECTRONICS, INC.,
`3 of 342
`Ex. 1022, IPR2021-01161 Page
`
`
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 3 of 342
`
`

`

`Privacy Act Statement
`
`The Privacy Act of 1974 (P.L. 93-579) requires that you be given certain information in connection with your submission of the attached form related to
`a patent application or patent. Accordingly, pursuant to the requirements of the Act, please be advised that:
`(1) the general authority for the collection
`of this information is 35 U.S.C. 2(b)(2}; (2) furnishing of the information solicited is voluntary; and (3) the principal purpose for which the information is
`used by the U.S. Patent and Trademark Office is to process and/or examine your submission related to a patent application or patent.
`If you do not
`furnish the requested information, the U.S. Patent and Trademark Office may not be able to process and/or examine your submission, which may
`result in termination of proceedings or abandcnmentof the application or expiration of the patent.
`The information provided by youin this form will be subject to the following routine uses:
`The information on this form will be treated confidentially to the extent allowed under the Freedom of Information Act (5 U.S.C. 552)
`1.
`and the Privacy Act (5 U.S.C. 552a). Records from this system of records may be disclosed to the Department of Justice to determine
`whether the Freedom ofInformation Act requires disclosure of these records.
`A record from this system of records may be disclosed, as a routine use, in the course of presenting evidence to a court, magistrate, or
`administrative tribunal, including disclosures to opposing counsel in the course of settlement negotiations.
`A record in this system of records may be disclosed, as a routine use, to a Member of Congress submitting a request involving an
`individual, to whom the record pertains, when the individual has requested assistance from the Memberwith respect to the subject matter of
`the record.
`
`2.
`
`3.
`
`4.
`
`5.
`
`6.
`
`7.
`
`A record in this system of records may be disclosed, as a routine use, to a contractor of the Agency having need for the information in
`order to perform a contract. Recipients of information shall be required to comply with the requirements of the Privacy Act of 1974, as
`amended, pursuant to 5 U.S.C. 552a(m).
`A record related to an International Application filed under the Patent Cooperation Treaty in this system of records may be disclosed,
`as a routine use, to the International Bureau of the World Intellectual Property Organization, pursuant to the Patent Cooperation Treaty.
`A record in this system of records may be disclosed, as a routine use, to another federal agency for purposes of National Security
`review (35 U.S.C. 181) and for review pursuant to the Atomic Energy Act (42 U.S.C. 218(c)).
`A record from this system of records may be disclosed, as a routine use, to the Administrator, General Services, or his/her designee,
`during an inspection of records conducted by GSAas part of that agency’s responsibility to recommend improvementsin records
`management practices and programs, under authority of 44 U.S.C. 2804 and 2906. Such disclosure shall be made in accordance with the
`GSAregulations governing inspection of records for this purpose, and anyotherrelevant{i.e., GSA cr Commerce) directive. Such
`disclosure shall not be used to make determinations abcutindividuals.
`
`
`
`
`
`8.
`
`9.
`
`A record from this system of records may be disclosed, as a routine use, to the public after either publication of the application pursuan
`to 35 U.S.C. 122(b) or issuance of a patent pursuant to 35 U.S.C. 151. Further, a record may be disclosed, subject to the limitations of 37
`CFR 1.14, as a routine use, to the public if the record wasfiled in an application which became abandonedorin which the proceedings were
`terminated and which application is referenced by either a published application, an application open to public inspections or an issued
`patent.
`A record from this system of records may be disclosed, as a routine use, to a Federal, State, or local law enforcement agency,if the
`USPTO becomes aware of a violation or potential violation of law or regulation.
`
`EFS Web 2.2.2
`
`Petitioner STMICROELECTRONICS, INC.,
`4 of 342
`Ex. 1022, IPR2021-01161 Page
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 4 of 342
`
`

`

`is
`
`an
`
`an
`
`duration,
`
`an automatic switch-off function for
`provided. The sensor
`measurement circuit for
`
`A capacitive touch sensor
`providing
`apparatus in which the sensor is
`incorporated
`to a
`a
`sensing element coupled
`comprises
`capacitance
`measuring the capacitance of the sensing element. A control circuit is
`operable
`measurement whether an
`to determine from the capacitance
`is in
`object
`proximity with the sensor. The determined presence of an
`object may be used
`a function of the apparatus. Furthermore, when it is determined that
`to
`toggle
`object has not been in proximity with the sensor for a
`time
`predetermined
`an
`output signal for switching off the apparatus is provided. The
`time duration may be selected from a number of predefined
`an
`or may be programmed using
`resistor-capacitor network.
`to the control circuit to override features of the
`Pulses may be applied
`automatic switch-off functionality.
`
`predetermined
`time durations,
`
`Petitioner STMICROELECTRONICS, INC.,
`5 of 342
`Ex. 1022, IPR2021-01161 Page
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 5 of 342
`
`

`

`BACKGROUND ART
`
`[0001]
`
`relates to
`
`adjacent
`
`capacitive
`to a sensor.
`
`This invention relates to
`particular, the invention
`proximity
`sensors for sensing the presence or touch of an
`
`sensors. In
`
`object
`
`[0002] Capacitive position
`common and accepted
`in the fields of portable media players
`quite
`example,
`plastic panels. Some mobile
`capacitive touch controls operable through glass
`are also starting
`to
`implement these kinds of interfaces.
`
`sensors have recently become increasingly
`in human interfaces and for machine control. For
`
`it is now
`
`common to find
`
`or
`
`(cellular) telephones
`
`into consumer electronic
`[0003] Many capacitive touch controls incorporated
`devices for appliances provide audio and/or visual feedback to a user
`indicating
`or
`whether a
`or other pointing object
`is present
`approaches such touch
`finger
`controls. A capacitive sensing microprocessor may typically be comprised in
`touch-controlled devices which are
`an “on” output signal
`to
`arranged
`provide
`to a sensor and an “off’ output signal when a
`is
`is
`finger
`adjacent
`are sent to a device controller to
`to a sensor. The signals
`on whether a user’s finger is in
`required function dependent
`implement
`an associated touch control.
`proximity with or
`
`when a
`
`not
`
`adjacent
`a
`
`touching
`
`finger
`
`Some touch-controlled devices remain “on” or “active” despite the user
`[0004]
`having moved away from the device or a
`particular function no
`longer being
`a
`amount of power which is
`required. This results in the device consuming
`not efficient.
`
`large
`
`[0005] There is therefore a need for an
`which can
`
`regulate power usage.
`
`improved capacitive touch sensor
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 6 of 342
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 6 of 342
`
`

`

`SUMMARY OF THE INVENTION
`
`a sensor
`
`a
`
`to a first aspect of the invention there is provided
`[0006] According
`a
`for determining the presence of an
`sensing element;
`object comprising:
`measurement circuit
`to measure the capacitance of the
`capacitance
`operable
`to determine whether an
`sensing element; and a control circuit operable
`object
`is in proximity with the sensor based on a measurement of the capacitance of
`an
`to
`the sensing element, the control circuit further being operable
`provide
`to control a function of an
`apparatus when it is determined that
`output signal
`an
`object has not been in proximity with the sensor for a
`duration.
`
`predetermined
`
`time
`
`so that the predetermined
`The control circuit may be configured
`[0007]
`duration is selectable from a number of different predefined
`time durations.
`
`time
`
`[0008] The control circuit may include a time input terminal and the
`time duration may selectable from the number of different
`to the time input
`
`predetermined
`predefined time durations according
`terminal.
`
`voltage applied
`
`to a
`
`[0009]
`
`The control circuit may include a
`delay multiplier terminal and be
`so that a selected one of the number of different predefined
`time
`configured
`a
`to a
`durations is
`multiplication factor according
`multiplied by
`voltage applied
`to the delay multiplier terminal so as to
`provide the predetermined time
`duration.
`
`[0010]
`
`The control circuit may be configured
`a user to
`duration is
`
`programmable by
`
`provide
`
`so that the predetermined time
`a user-selected time duration.
`
`Petitioner STMICROELECTRONICS, INC.,
`7 of 342
`Ex. 1022, IPR2021-01161 Page
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 7 of 342
`
`

`

`The sensor may comprise
`resistor-capacitor (RC) network coupled
`[0011]
`on atime
`the control circuit and the predetermined time duration may depend
`constant of the RC network.
`
`to
`
`a
`
`[0012]
`
`The control circuit may include a
`delay multiplier terminal and be
`a
`so that the user-selected time duration is multiplied by
`configured
`to a
`to the delay multiplier
`multiplication factor according
`voltage applied
`terminal to
`provide the predetermined time duration.
`
`[0013]
`
`The control circuit may be configured such that the provision of the
`to control a function of an
`apparatus after the predetermined
`output signal
`time duration may be overridden so the output signal
`is not
`provided when it is
`determined that an
`object has not been in proximity with the sensor fora
`predetermined time duration. For example, the control circuit may be operable
`to receive an override pulse and on
`to
`retrigger the
`receipt of the override pulse
`time duration to so as to extend the time before the output
`predetermined
`to control a function of an
`apparatus is provided.
`
`signal
`
`[0014]
`
`The control circuit may be configured such that the provision of the
`to control a function of an apparatus after the predetermined
`output signal
`time duration may be overridden so the output signal
`is
`provided beforeit is
`determined that an
`object has not been in proximity with the sensor fora
`predetermined time duration. For example, the control circuit may be operable
`to receive an override pulse and on
`to
`receipt of the override pulse
`provide the
`to control a function of an
`output signal
`
`apparatus.
`
`The sensor may be configured
`[0015]
`perform
`sensor is powered up, when an
`object is determined to be in proximity with the
`sensor for more than a timer setting, and /
`or when an override is released.
`
`a recalibration when the
`
`to
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 8 of 342
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 8 of 342
`
`

`

`The control circuit may be configured such that the output signal is
`[0016]
`state and a low state when an
`toggled between a
`object is determined to
`high
`be in proximity with the sensor.
`
`[0017]
`
`The function of an
`
`apparatus controlled by the output signal may be a
`
`switch-off function.
`
`[0018]
`
`measurement circuit may employ bursts of charge-
`The capacitance
`to acquire measurements.
`
`transfer cycles
`
`measurement circuit may be configured
`to operate in
`The capacitance
`[0019]
`one of more than one
`on the output signal, for
`acquisition modes depending
`low-power mode or a fast mode.
`
`example
`
`a
`
`[0020]
`
`comprised
`
`The capacitance
`in a
`general purpose microcontroller under firmware control.
`
`measurement circuit and the control circuit may be
`
`The capacitance
`[0021]
`comprised within a
`
`measurement circuit and the control circuit may be
`chip package, such as an SOT23-6.
`
`circuit
`
`six-pin integrated
`
`[0022] According
`
`apparatus comprising
`
`to a second aspect of the invention there is provided
`a sensor
`to the first aspect of the invention.
`
`according
`
`a method
`to a third aspect of the invention there is provided
`[0023] According
`a function of an
`apparatus comprising: determining whether an
`for controlling
`object is in proximity with a sensor based on a measurement of the capacitance
`of a
`an output signal
`to control the function of
`sensing element and providing
`the apparatus when it is determined that an
`object has not been in proximity
`with the sensor for a
`predetermined time duration.
`
`[0024]
`
`The function of the apparatus controlled by the output signal may be a
`switch-off function.
`
`Petitioner STMICROELECTRONICS, INC.,
`9 of 342
`Ex. 1022, IPR2021-01161 Page
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 9 of 342
`
`

`

`provided
`
`provide
`not
`
`a
`
`to another aspect of the present invention, there is
`[0025] According
`a sensor for determining the presence of an
`object comprising:
`a
`measurement circuit operable
`to measure the
`sensing element,
`capacitance
`capacitance of the sensing element, and a control circuit
`to determine
`operable
`whether an
`object is in proximity with the sensor based on a measurement of
`the capacitance of the sensing element, the control circuit also being operable
`an
`to control a function of an
`apparatus based on an
`to
`output signal
`being in proximity with the sensor and the output signal being
`object
`produced after a
`time duration.
`
`predetermined
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`For a better understanding of the invention and to show how the same
`[0026]
`may be carried into effect reference is now made by way of example
`to the
`in which:
`
`accompanying drawings
`
`[0027]
`
`schematically shows sense electrode connections for an
`Figure 1
`to an
`an auto-off function according
`example chip for implementing
`embodiment of the invention;
`
`[0028]
`
`Figure 2
`schematically represent
`in the chip of Figure 1;
`
`an
`
`application of drift compensation
`
`[0029]
`
`Figure 3 schematically shows a basic circuit
`configuration for
`a 15 minute auto switch-off function in an active high output
`providing
`implementation of an embodiment of the invention;
`
`Figure 4 schematically showsa series of fast mode bursts on the SNSK
`[0030]
`pin of the chip shown in Figure 1 when in an on
`
`condition;
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 10 of 342
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 10 of 342
`
`

`

`schematically shows a series of low-power mode bursts and a
`Figure 5
`[0031]
`switch to fast mode power bursts on the SNSK pin of the chip shown in Figure 1
`when switching from an off condition to an on
`
`condition;
`
`[0032]
`Rop to
`
`Figure 6 schematically shows use of an
`output configuration resistor
`or an active low
`configure the chip of Figure 1 to have an active high
`
`output;
`
`Figure 7 schematically shows an
`example circuit configuration for the
`[0033]
`chip shown in Figure 1 with the output connected to a
`
`digital transistor;
`
`Figure 8 schematically shows an
`[0034]
`to
`chip shown in Figure 1
`
`configured
`
`provide
`
`example circuit configuration for the
`a
`predefined auto-off delay;
`
`Figure 9 schematically shows an
`[0035]
`to
`chip shown in Figure 1
`
`configured
`
`provide
`
`circuit
`
`configuration for the
`example
`a
`programmable auto-off delay;
`
`Figure 10 schematically shows an
`[0036]
`example pulse applied
`shown in Figure | to override an auto-off delay;
`
`to the chip
`
`Figure 11
`schematically shows another example pulse applied
`[0037]
`chip shown in Figure 1 to override an auto-off delay;
`
`to the
`
`Figure 12 schematically shows example voltage levels for the chip
`[0038]
`overriding of an auto-off delay;
`in
`shown in Figure 1
`
`schematically show typical values of RC divisor K as
`Figures 13 and 14
`[0039]
`a function of supply voltage
`VDD for the chip shown in Figure 1 with active
`output and active low output respectively;
`
`high
`
`[0040]
`
`curves of auto-off delayasa
`Figure 15
`schematically showstypical
`function of timing resistor value for different capacitor values and different
`supply voltages for an active
`
`high output configuration;
`
`Petitioner STMICROELECTRONICS, INC.,
`11 of 342
`Ex. 1022, IPR2021-01161 Page
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 11 of 342
`
`

`

`[0041]
`
`curves of auto-off delayasa
`Figure 16 schematically showstypical
`function of timing resistor value for different capacitor values and different
`supply voltages for an active low output configuration;
`
`schematically shows an
`Figure 17
`example application of the chip
`[0042]
`a PNP transistor
`in an active low output configuration driving
`shown in Figure 1
`with an auto-off time of 3.33 hours;
`
`Figure 18 schematically shows another example application of the
`[0043]
`a
`in an active
`chip shown in Figure 1
`high output configuration driving
`impedance with an auto-off time of 135 seconds;
`
`high
`
`[0044]
`Figure 1
`
`Figure 19 schematically shows an
`in an SOT23-6 package; and
`
`implementation of the chip shownin
`
`pin diagram for an
`Figure 20 schematically shows a
`[0045]
`in an SOT23-6 package.
`the chip shown in Figure 1
`
`implementation of
`
`DETAILED DESCRIPTION
`
`In one
`
`is
`
`apparatus to
`
`circuit
`
`Petitioner STMICROELECTRONICS, INC.,
`12 of 342
`Ex. 1022, IPR2021-01161 Page
`
`an embodiment of the invention may be implemented
`[0046]
`example,
`in an
`a
`sensor function. The
`integrated circuit chip providing
`proximity
`into a device or
`circuit
`chip may thus be incorporated
`integrated
`sensor
`provide and control a
`functionality for the device / apparatus
`proximity
`in accordance with an embodiment of the invention. For the purposes of
`a
`chip providing the functionality of an
`explanation,
`specific integrated
`embodiment of the invention will be described further below. The chip will in
`name
`places be referred to
`QT102. However, it will be appreciated
`specific example application of an embodiment
`that the QT102 chip
`
`by product
`a
`
`merely
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 12 of 342
`
`

`

`of the invention. Other embodiments of the invention need not be implemented
`in this way, and furthermore, other embodiments of the invention may
`ina chip
`some or none of the additional features of
`in conjunction with all,
`be provided
`the QT102 chip described further below.
`
`[0047] Before turning specifically
`is
`
`provided.
`
`to the QT102 chip embodiment,
`
`a summary
`
`a sensor
`
`system
`
`It is known that a touch sensitive sensor may comprise
`[0048]
`element, such as an etched copper electrode mounted on a PCB substrate, and
`a
`a control circuit for measuring
`capacitance of the sensor element to a
`reference potential. The sensor element may be referred to as a sense
`electrode. The capacitance of the sense electrode is affected by the presence of
`nearby objects, such as a
`pointing finger. Thus the measured capacitance of the
`sense
`electrode, and in
`in the measured capacitance, may be
`particular changes
`identify the presence of an
`object adjacent the sense electrode. The
`used to
`an
`to
`control circuit may be configured
`output signal, e.g. by setting
`provide
`or
`output logic level as
`low, indicating whether or not an
`is deemed
`high
`object
`to be adjacent the sense electrode. A controller of a device in which the touch
`sensitive sensor is implemented may receive the output signal and act
`
`an
`
`accordingly.
`
`[0049] There are various known technologies for measuring capacitance of a
`sense electrode in a
`capacitive touch sensor. Embodiments of the present
`in conjunction with any of these technologies /
`invention may be implemented
`measurement circuits. For example, the fundamental principles underlying the
`sensors described in US 5,730,165, US 6,466,036 and US 6,452,514
`could be used.
`
`capacitive
`
`In accordance with embodiments of the invention, the control circuit
`[0050]
`of the sensor can determine whether an
`or a user’s finger is no
`longer in
`proximity with the sensor and based on
`time duration, the
`
`pre-determined
`
`object
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 13 of 342
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 13 of 342
`
`

`

`an
`
`control circuit can
`to prevent the
`output signal automatically
`produce
`measurement circuit from continually measuring changes in
`capacitance
`capacitance due to, for example, the perceived presence of an
`in
`proximity with the sensor.
`
`object
`
`or power
`
`[0051] Therefore, the control circuit is able to deactivate, turn-off,
`measurement circuit where an
`apparatus has
`down the capacitance
`inadvertently been left on or with the erroneous
`perception that a user is still
`present. This may, for example, be referred to as an “auto-off” feature. The
`measurement circuit from continually
`signal for preventing the capacitance
`measuring changes in capacitance may be referred to as an auto-off signal. The
`measurement circuit and the auto-off control circuit may be
`capacitance
`in a
`
`general-purpose microcontroller under firmware control, for
`comprised
`example, such as the QT102 chip described further below.
`
`[0052] As described in Section 3.5 of the below numbered sections, and in
`conjunction with the drawings, the control circuit of the sensor may be
`—
`implemented by different methods
`for example, the auto-off signal output
`may be produced automatically after different pre-determined time durations to
`measurement circuit due to no presence
`effect powering down the capacitance
`a user so that it may
`of the user; the control circuit may be programmed by
`power down an
`apparatus based on a user-selected time duration; the control
`to extend time durations
`circuit output signals may be overridden, for example,
`before an
`apparatus is turned-off or to
`immediately turn-off an
`a user is no
`
`apparatus when
`
`longer present.
`
`[0053]
`
`The sensor of the invention may be useful in various
`
`applications, for
`in kitchen appliances, light switches, headsets, and other electronic
`example
`consumer devices. For
`a sensor of the
`a coffee machine incorporating
`example,
`invention may be programmed to power-down after a time
`period of, say, 30
`minutes, where the coffee machine has been left on
`inadvertently. This will
`
`Petitioner STMICROELECTRONICS, INC.,
`14 of 342
`Ex. 1022, IPR2021-01161 Page
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 14 of 342
`
`

`

`conserve energy use and minimise the possibility of damage and/or
`beneficially
`accidents caused by the coffee machine or
`glass container(s) overheating.
`
`[0054] Aspects of the QT102 chip referred to above, and which incorporates
`an embodiment of the invention, will now be described in the following
`numbered sections.
`
`[0055]
`
`to
`
`The numbered sections may be considered to relate generally
`-
`as follows: Section 1
`Overview (including 1.1
`features of the QT102 chip
`Introduction, 1.2 Electrode Drive, 1.3 Sensitivity, 1.3.1 Introduction, 1.3.2
`1.4 Recalibration Timeout ,
`Increasing Sensitivity, 1.3.3 Decreasing Sensitivity,
`1.5 Forced Sensor Recalibration, 1.6 Drift Compensation,
`1.8 Spread Spectrum). Section 2 -Wiring and Parts
`(including
`Application
`Note, 2.2 Cs Sample Capacitor, 2.3 Rs Resistor, 2.4 Power Supply, PCB Layout,
`-
`2.5 Wiring). Section 3
`Operation (including 3.1 Acquisition Modes, 3.1.1
`’
`Introduction, 3.1.2 OUT Pin ‘On’ (Fast Mode), 3.1.3 OUT Pin ‘Off
`(Low Power
`Mode), 3.2 Signal Processing, 3.2.1 Detect Integrator, 3.2.2 Detect Threshold,
`3.3 Output Polarity Selection, 3.4 Output Drive, 3.5 Auto Off Delay, 3.5.1
`-
`-
`User-
`Introduction, 3.5.2 Auto Off
`Predefined Delay, 3.5.3 Auto Off
`-
`programmed Delay, 3.5.4 Auto Off
`Overriding the Auto Off Delay, 3.5.5
`Configuring the User-programmed Auto-off Delay, 3.6 Examples of Typical
`-
`4.1 Absolute Maximum
`Applications). Section 4
`Specifications (including
`Specifications, 4.2 Recommended Operating Conditions, 4.3 AC Specifications,
`4.4
`Signal Processing, 4.5 DC Specifications, 4.6 Mechanical Dimensions, 4.7
`Moisture Sensitivity Level (MSL)).
`
`1.7 Response Time,
`2.1
`
`1] Overview
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 15 of 342
`
`Petitioner STMICROELECTRONICS, INC.,
`Ex. 1022, IPR2021-01161 Page 15 of 342
`
`

`

`1.1 Introduction
`
`The QT102 is a
`[0056]
`(toggle) output with a
`
`programmable
`
`single key device featuring
`auto switch-off capability.
`
`a touch on
`
`/ touch off
`
`[0057]
`
`The QT102 is a
`digital burst mode charge-transfer (QT)
`designed specifically for touch controls; it includes hardware and signal
`provide stable sensing under a wide variety of changing
`processing functions to
`are
`conditions. In
`examples, low cost, non-critical components
`empl