WO2022193852A1 - 无线充电系统、芯片和无线充电电路 - Google Patents

无线充电系统、芯片和无线充电电路 Download PDF

Info

Publication number
WO2022193852A1
WO2022193852A1 PCT/CN2022/074400 CN2022074400W WO2022193852A1 WO 2022193852 A1 WO2022193852 A1 WO 2022193852A1 CN 2022074400 W CN2022074400 W CN 2022074400W WO 2022193852 A1 WO2022193852 A1 WO 2022193852A1
Authority
WO
WIPO (PCT)
Prior art keywords
field effect
effect transistor
fet
terminal
drain terminal
Prior art date
Application number
PCT/CN2022/074400
Other languages
English (en)
French (fr)
Inventor
王丰
武渊
张伟
王朝
赵礼列
Original Assignee
荣耀终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Priority to EP22770211.5A priority Critical patent/EP4123426A4/en
Priority to US17/998,417 priority patent/US11995251B2/en
Publication of WO2022193852A1 publication Critical patent/WO2022193852A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/1698—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • G06F3/021—Arrangements integrating additional peripherals in a keyboard, e.g. card or barcode reader, optical scanner
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G06F3/0383—Signal control means within the pointing device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0441—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0442—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • G06F3/04842—Selection of displayed objects or displayed text elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/10—Text processing
    • G06F40/166—Editing, e.g. inserting or deleting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • G06F1/1607—Arrangements to support accessories mechanically attached to the display housing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/163—Indexing scheme relating to constructional details of the computer
    • G06F2200/1632—Pen holder integrated in the computer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/163—Indexing scheme relating to constructional details of the computer
    • G06F2200/1633—Protecting arrangement for the entire housing of the computer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/038—Indexing scheme relating to G06F3/038
    • G06F2203/0384—Wireless input, i.e. hardware and software details of wireless interface arrangements for pointing devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
    • G06F3/0231—Cordless keyboards
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the embodiments of the present application relate to the technical field of wireless charging, and in particular, to a wireless charging system, a chip, and a wireless charging circuit.
  • the wireless charging technology originates from the wireless power transmission technology. Specifically, the charger can generate an electromagnetic signal, and the electric device can sense the electromagnetic signal, and the electric device can generate a current to charge the battery. Wireless charging is widely used in current electronic devices because it does not require additional wires and other accessories.
  • the charger in the field of stylus, can be a wireless keyboard or electronic device, and the powered device can be a stylus.
  • the stylus can be wirelessly charged based on a wireless keyboard or electronic device.
  • Embodiments of the present application provide a wireless charging system, a chip, and a wireless charging circuit, which can shorten a wireless charging link and improve link efficiency.
  • an embodiment of the present application provides a wireless charging system, including an electronic device and a stylus.
  • the stylus may also be called a stylus or the like.
  • the electronic device is used for wirelessly charging the stylus;
  • the stylus includes a wireless charging circuit;
  • the wireless charging circuit includes: a first coil, a chip and a first battery; the first coil is used for coupling with the second coil to obtain AC signal; the chip is used to charge the first battery according to the AC signal;
  • the charger unit includes: a voltage-stabilizing charging circuit, a boosting charging circuit or a switched capacitor charging circuit; wherein the chip includes a rectifier, a charger unit, and a micro-control unit and a protocol encoding and decoding unit; a rectifier for rectifying an input AC signal into a DC signal; a charger unit for charging the first battery with a DC signal from the rectifier; a protocol encoding and decoding unit for communicating with the sending chip; Micro-control unit for controlling the charger unit and the protocol codec unit.
  • the RX chip of the stylus and the charger chip can be designed as one device. After the energy is coupled from the coil in the stylus, it can be directly output to the battery of the stylus after passing through the device, which can shorten the wireless charging chain. It can improve the link efficiency, which can reduce the temperature rise of the stylus charging type and improve the charging efficiency.
  • the voltage stabilization charging circuit includes: a first field effect transistor control module, a first field effect transistor and a second field effect transistor; wherein the gate terminal of the first field effect transistor and the second field effect transistor The gate terminals of the first FET are respectively connected to the first FET control module, the source terminal of the first FET is connected to the output terminal of the rectifier, the drain terminal of the first FET is connected to the source terminal of the second FET, The drain terminal of the second FET is used to charge the battery of the stylus.
  • the chip includes an LDO charger, the number of field effect transistors included in the LDO charger is small, and the structure is relatively simple.
  • the voltage stabilization charging circuit includes: a second field effect transistor control module, a third field effect transistor, a fourth field effect transistor and a fifth field effect transistor; wherein, the gate terminal of the third field effect transistor , the gate terminal of the fourth field effect tube and the gate terminal of the fifth field effect tube are respectively connected with the second field effect tube control module, the source end of the third field effect tube is connected with the output end of the rectifier, and the third field effect tube
  • the drain end of the fourth FET is connected to the source end of the fourth FET and one end of the inductor L
  • the drain end of the fourth FET is connected to the source end of the fifth FET and the other end of the inductor L
  • the fifth FET is connected to the source end of the fifth FET and the other end of the inductor L.
  • the drain end of the tube is used to charge the battery of the stylus.
  • the chip includes a Buck charger, and the number of FETs contained in the Buck charger is larger than that of the LDO charger.
  • the third FET, the fourth FET and the inductor L can realize flexible and stable voltage conversion, and the efficiency higher.
  • the voltage stabilization charging circuit includes: a third field effect transistor control module, a sixth field effect transistor, a seventh field effect transistor, an eighth field effect transistor, a ninth field effect transistor, and a tenth field effect transistor tube, the eleventh field effect tube, the twelfth field effect tube, the thirteenth field effect tube and the fourteenth field effect tube.
  • the sixth field effect tube, the seventh field effect tube, the eighth field effect tube, the ninth field effect tube, the tenth field effect tube, the eleventh field effect tube, the twelfth field effect tube, the thirteenth field effect tube The respective gate terminals of the effect tube and the fourteenth field effect tube are respectively connected with the third field effect tube control module; the source stage end of the sixth field effect tube is connected with the output end of the rectifier, and the drain stage end of the sixth field effect tube is connected to the The source terminal of the seventh field effect transistor and the source terminal of the eleventh field effect transistor are connected, the drain end of the seventh field effect transistor is connected to the source terminal of the eighth field effect transistor and one end of the capacitor C1, and the eighth field effect transistor The drain terminal of the ninth field effect transistor is connected to the source terminal of the ninth field effect transistor, the drain terminal of the twelfth field effect transistor and the source terminal of the thirteenth field effect transistor, and the drain terminal of the ninth field effect transistor is connected to the tenth field effect transistor.
  • the source terminal and the other end of the capacitor C1 are connected, the drain terminal of the tenth field effect transistor and the drain terminal of the fourteenth field effect transistor are both grounded, and the drain terminal of the eleventh field effect transistor and the source terminal of the twelfth field effect transistor And one end of the capacitor C2 is connected, the drain terminal of the twelfth FET is connected to the source terminal of the thirteenth FET; the drain terminal of the thirteenth FET is connected to the source terminal of the fourteenth FET and the capacitor C2 The other end of the FET is connected, wherein the drain terminal of the eighth field effect transistor is connected to the drain terminal of the twelfth field effect transistor for charging the battery of the stylus.
  • the electronic device includes: a second battery, a booster chip, a sending chip, and a second coil; the second battery is used to input the voltage to the booster chip; the booster chip is used to boost the voltage to obtain the first DC signal; the sending chip is used to invert the first DC signal to the first AC signal, and transmit the first AC signal to the second coil; the second coil is used to couple with the first coil through the first AC signal .
  • the electronic device can be used to charge the stylus.
  • the electronic device is a tablet computer or a wireless keyboard. Applicable to stylus usage scenarios.
  • an embodiment of the present application provides a chip, including: a rectifier, a charger unit, a micro-control unit, and a protocol encoding/decoding unit; a rectifier, used for rectifying an input AC signal into a DC signal; a charger unit, used for Use the DC signal from the rectifier to charge the battery; wherein, the charger unit includes: a voltage-stabilizing charging circuit, a boosting charging circuit or a switched capacitor charging circuit; a protocol coding and decoding unit for communicating with the sending chip; a micro-control unit for Controls the charger unit and the protocol codec unit.
  • the voltage stabilization charging circuit includes: a first field effect transistor control module, a first field effect transistor and a second field effect transistor; wherein the gate terminal of the first field effect transistor and the second field effect transistor The gate terminals of the first FET are respectively connected to the first FET control module, the source terminal of the first FET is connected to the output terminal of the rectifier, the drain terminal of the first FET is connected to the source terminal of the second FET, The drain terminal of the second FET is used to charge the battery of the stylus.
  • the voltage stabilization charging circuit includes: a second field effect transistor control module, a third field effect transistor, a fourth field effect transistor and a fifth field effect transistor; wherein, the gate terminal of the third field effect transistor , the gate terminal of the fourth field effect tube and the gate terminal of the fifth field effect tube are respectively connected with the second field effect tube control module, the source end of the third field effect tube is connected with the output end of the rectifier, and the third field effect tube
  • the drain end of the fourth FET is connected to the source end of the fourth FET and one end of the inductor L
  • the drain end of the fourth FET is connected to the source end of the fifth FET and the other end of the inductor L
  • the fifth FET is connected to the source end of the fifth FET and the other end of the inductor L.
  • the drain end of the tube is used to charge the battery of the stylus.
  • the voltage stabilization charging circuit includes: a third field effect transistor control module, a sixth field effect transistor, a seventh field effect transistor, an eighth field effect transistor, a ninth field effect transistor, and a tenth field effect transistor tube, the eleventh field effect tube, the twelfth field effect tube, the thirteenth field effect tube and the fourteenth field effect tube; among them, the sixth field effect tube, the seventh field effect tube, the eighth field effect tube, The gate terminals of the ninth field effect transistor, the tenth field effect transistor, the eleventh field effect transistor, the twelfth field effect transistor, the thirteenth field effect transistor and the fourteenth field effect transistor are respectively connected with the third field effect transistor.
  • the control module is connected; the source end of the sixth FET is connected to the output end of the rectifier, the drain end of the sixth FET is connected to the source end of the seventh FET and the source end of the eleventh FET,
  • the drain terminal of the seventh field effect transistor is connected to the source terminal of the eighth field effect transistor and one end of the capacitor C1
  • the drain terminal of the eighth field effect transistor is connected to the source terminal of the ninth field effect transistor
  • the twelfth field effect transistor The drain terminal of the 13th FET is connected to the source terminal of the thirteenth FET
  • the drain terminal of the ninth FET is connected to the source terminal of the tenth FET and the other end of the capacitor C1
  • the drain terminal of the tenth FET is connected to the
  • the drain terminals of the fourteenth field effect transistor are all grounded, the drain terminal of the eleventh field effect transistor is connected to the source terminal of the twelfth field effect transistor and one end of the capacitor C2, and the drain terminal of the twelfth field effect transistor
  • the source terminal of the FET is connected; the drain terminal of the thirteenth FET is connected to the source terminal of the fourteenth FET and the other end of the capacitor C2, wherein the drain terminal of the eighth FET is connected to the twelfth FET The drain terminal of the FET is connected to charge the battery of the stylus.
  • an embodiment of the present application provides a wireless charging circuit, which is applied to a stylus, and the wireless charging circuit includes: a first coil, a chip, and a first battery; the first coil is used for coupling with the second coil to obtain an AC signal; The chip is used for charging the first battery according to the AC signal; wherein, the chip includes a rectifier, a charger unit, a micro-control unit and a protocol coding and decoding unit; the rectifier is used for rectifying the input AC signal into a DC signal; the charger unit is used for is used to charge the first battery by using the DC signal from the rectifier; wherein, the charger unit includes: a voltage-stabilizing charging circuit, a boosting charging circuit or a switched capacitor charging circuit; a protocol coding and decoding unit for communicating with the sending chip; a micro-control unit , used to control the charger unit and the protocol codec unit.
  • the voltage stabilization charging circuit includes: a first field effect transistor control module, a first field effect transistor and a second field effect transistor; wherein the gate terminal of the first field effect transistor and the second field effect transistor The gate terminals of the first FET are respectively connected to the first FET control module, the source terminal of the first FET is connected to the output terminal of the rectifier, the drain terminal of the first FET is connected to the source terminal of the second FET, The drain terminal of the second FET is used to charge the battery of the stylus.
  • the voltage stabilization charging circuit includes: a second field effect transistor control module, a third field effect transistor, a fourth field effect transistor and a fifth field effect transistor; wherein, the gate terminal of the third field effect transistor , the gate terminal of the fourth field effect tube and the gate terminal of the fifth field effect tube are respectively connected with the second field effect tube control module, the source end of the third field effect tube is connected with the output end of the rectifier, and the third field effect tube
  • the drain end of the fourth FET is connected to the source end of the fourth FET and one end of the inductor L
  • the drain end of the fourth FET is connected to the source end of the fifth FET and the other end of the inductor L
  • the fifth FET is connected to the source end of the fifth FET and the other end of the inductor L.
  • the drain end of the tube is used to charge the battery of the stylus.
  • the voltage stabilization charging circuit includes: a third field effect transistor control module, a sixth field effect transistor, a seventh field effect transistor, an eighth field effect transistor, a ninth field effect transistor, and a tenth field effect transistor tube, the eleventh field effect tube, the twelfth field effect tube, the thirteenth field effect tube and the fourteenth field effect tube; among them, the sixth field effect tube, the seventh field effect tube, the eighth field effect tube, The gate terminals of the ninth field effect transistor, the tenth field effect transistor, the eleventh field effect transistor, the twelfth field effect transistor, the thirteenth field effect transistor and the fourteenth field effect transistor are respectively connected with the third field effect transistor.
  • the control module is connected; the source end of the sixth FET is connected to the output end of the rectifier, the drain end of the sixth FET is connected to the source end of the seventh FET and the source end of the eleventh FET,
  • the drain terminal of the seventh field effect transistor is connected to the source terminal of the eighth field effect transistor and one end of the capacitor C1
  • the drain terminal of the eighth field effect transistor is connected to the source terminal of the ninth field effect transistor
  • the twelfth field effect transistor The drain terminal of the 13th FET is connected to the source terminal of the thirteenth FET
  • the drain terminal of the ninth FET is connected to the source terminal of the tenth FET and the other end of the capacitor C1
  • the drain terminal of the tenth FET is connected to the
  • the drain terminals of the fourteenth field effect transistor are all grounded, the drain terminal of the eleventh field effect transistor is connected to the source terminal of the twelfth field effect transistor and one end of the capacitor C2, and the drain terminal of the twelfth field effect transistor
  • the source terminal of the FET is connected; the drain terminal of the thirteenth FET is connected to the source terminal of the fourteenth FET and the other end of the capacitor C2, wherein the drain terminal of the eighth FET is connected to the twelfth FET The drain terminal of the FET is connected to charge the battery of the stylus.
  • FIG. 1 is a schematic diagram of a scenario to which an embodiment of the present application is applicable
  • FIG. 2A is a schematic structural diagram of a touch pen provided by an embodiment of the present application.
  • FIG. 2B is a schematic diagram of a partially disassembled structure of a touch pen provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of interaction between a touch pen and an electronic device according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of the assembly of a touch pen and a wireless keyboard according to an embodiment of the present application
  • 5A is a schematic diagram of a stylus provided in an embodiment of the application being accommodated in a storage portion of a wireless keyboard;
  • 5B is a schematic side view of the stylus provided in an embodiment of the present application when the stylus is stored in the storage portion of the wireless keyboard;
  • FIG. 6 is a schematic diagram of a hardware structure of a touch pen according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a hardware structure of an electronic device provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a hardware structure of a wireless keyboard provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a wireless charging link in a possible design
  • FIG. 10 is a schematic diagram of the hardware structure of the RX chip in a possible design
  • FIG. 11 is a schematic diagram of the hardware structure of the charger chip in a possible design
  • FIG. 12 is a schematic diagram of the hardware structure of a chip provided by an embodiment of the application.
  • FIG. 13 is a schematic diagram of a specific hardware structure of a chip provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram of a specific hardware structure of a chip provided by an embodiment of the present application.
  • FIG. 15 is a schematic diagram of a specific hardware structure of a chip provided by an embodiment of the application.
  • FIG. 16 is a schematic diagram of a wireless charging link provided by an embodiment of the present application.
  • plural refers to two or more.
  • the term “and/or” in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases.
  • the character "/" in this article generally indicates that the related objects before and after are an “or” relationship; in the formula, the character "/" indicates that the related objects are a "division" relationship.
  • FIG. 1 is a schematic diagram of a scenario to which an embodiment of the present application is applicable.
  • the scene includes a stylus 100 , an electronic device 200 and a wireless keyboard 300 .
  • the electronic device 200 is a tablet computer as an example for description.
  • the stylus 100 and the wireless keyboard 300 may provide input to the electronic device 200 , and the electronic device 200 performs operations in response to the input based on the input of the stylus 100 or the wireless keyboard 300 .
  • a touch area can be set on the wireless keyboard 300 , the touch pen 100 can operate the touch area of the wireless keyboard 300 to provide input to the wireless keyboard 300 , and the wireless keyboard 300 can perform operations in response to the input based on the input of the touch pen 100 .
  • the stylus 100 and the electronic device 200, between the stylus 100 and the wireless keyboard 300, and between the electronic device 200 and the wireless keyboard 300 may be interconnected through a communication network to realize wireless interaction of signals.
  • the communication network can be, but is not limited to, a WI-FI hotspot network, a WI-FI peer-to-peer (P2P) network, a Bluetooth network, a zigbee network, or a near field communication (NFC) network, etc. Communications network.
  • the stylus 100 can be, but is not limited to, an inductive pen and a capacitive pen.
  • the electronic device 200 has a touch screen 201 .
  • an electromagnetic induction board needs to be integrated on the touch screen 201 of the electronic device 200 that interacts with the touch pen 100 .
  • Coils are distributed on the electromagnetic induction board, and coils are also integrated in the inductive pen. Based on the principle of electromagnetic induction, within the range of the magnetic field generated by the electromagnetic induction board, with the movement of the inductive pen, the inductive pen can store electrical energy.
  • the inductive pen can transmit the accumulated electric energy to the electromagnetic induction board through the coil in the inductive pen through free oscillation.
  • the electromagnetic induction board can scan the coils on the electromagnetic induction board based on the power from the inductive pen to calculate the position of the inductive pen on the touch screen 201 .
  • the touch screen 201 in the electronic device 200 may also be called a touch screen, and the touch pen 100 may also be called a stylus.
  • the capacitive stylus may include: passive capacitive stylus and active capacitive stylus.
  • Passive capacitive pens can be called passive capacitive pens
  • active capacitive pens can be called active capacitive pens.
  • One or more electrodes may be provided in the active capacitive pen (eg, in the tip of the pen), and the active capacitive pen may transmit signals through the electrodes.
  • the stylus 100 is an active capacitive pen
  • an integrated electrode array is required on the touch screen 201 of the electronic device 200 that interacts with the stylus 100 .
  • the electrode array may be a capacitive electrode array.
  • the electronic device 200 can receive the signal from the active capacitive pen through the electrode array, and then, when receiving the signal, recognize the position of the active capacitive pen on the touch screen based on the change of the capacitance value on the touch screen 201, and the active capacitive pen. tilt angle of the capacitive pen.
  • FIG. 2A is a schematic structural diagram of a touch pen according to an embodiment of the present application.
  • the stylus 100 may include a tip 10 , a barrel 20 and a back cover 30 .
  • the inside of the pen holder 20 is a hollow structure.
  • the pen tip 10 and the back cover 30 are located at two ends of the pen holder 20 respectively.
  • the back cover 30 and the pen holder 20 can be plugged or snapped together. See the description for Figure 2B.
  • FIG. 2B is a schematic diagram of a partially disassembled structure of the touch pen according to an embodiment of the present application.
  • the stylus 100 further includes a main shaft assembly 50 , the main shaft assembly 50 is located in the pen holder 20 , and the main shaft assembly 50 is slidably arranged in the pen holder 20 .
  • the main shaft assembly 50 has an external thread 51
  • the pen tip 10 includes a writing end 11 and a connecting end 12
  • the connecting end 12 of the pen tip 10 has an internal thread (not shown) matched with the external thread 51 .
  • the connecting end 12 of the pen tip 10 When the main shaft assembly 50 is assembled into the pen barrel 20 , the connecting end 12 of the pen tip 10 extends into the pen barrel 20 and is threadedly connected with the external thread 51 of the main shaft assembly 50 .
  • the connection between the connecting end 12 of the pen tip 10 and the spindle assembly 50 may also be detachably connected by snapping or the like.
  • the connection end 12 of the pen nib 10 is detachably connected with the spindle assembly 50, so that the replacement of the nib 10 is realized.
  • the main shaft assembly 50 is provided with a pressure sensing assembly 60 , a part of the pressure sensing assembly 60 is fixedly connected with the fixed structure in the pen barrel 20 , and a part of the pressure sensing assembly 60 is connected with the main shaft assembly 50 Fixed connection.
  • the circuit board 70 can detect the pressure of the writing end 11 of the pen tip 10 according to the deformation of the pressure-sensitive component 60 , thereby The line thickness of the writing end 11 is controlled according to the pressure of the writing end 11 of the pen tip 10 .
  • the pressure detection of the pen tip 10 includes but is not limited to the above methods.
  • the pressure of the pen tip 10 can be detected by the pressure sensor.
  • the stylus 100 further includes a plurality of electrodes, and the plurality of electrodes may be, for example, a first emission electrode 41 , a ground electrode 43 and a second emission electrode 42 .
  • the first emitter electrode 41 , the ground electrode 43 and the second emitter electrode 42 are all electrically connected to the circuit board 70 .
  • the first emitter electrode 41 may be located within the pen tip 10 and close to the writing end 11, and the circuit board 70 may be configured as a control board that can provide signals to the first emitter electrode 41 and the second emitter electrode 42, respectively.
  • the first emitter electrode 41 is used for To transmit the first signal, when the first transmitting electrode 41 is close to the touch screen 201 of the electronic device 200, a coupling capacitance can be formed between the first transmitting electrode 41 and the touch screen 201 of the electronic device 200, so that the electronic device 200 can receive first signal.
  • the second transmitting electrode 42 is used for transmitting a second signal, and the electronic device 200 can determine the tilt angle of the stylus 100 according to the received second signal.
  • the second emitter electrode 42 may be located on the inner wall of the pen holder 20 . In one example, the second emitter electrode 42 may also be located on the spindle assembly 50 .
  • the ground electrode 43 may be located between the first emitter electrode 41 and the second emitter electrode 42, or the ground electrode 43 may be located around the outer periphery of the first emitter electrode 41 and the second emitter electrode 42, and the ground electrode 43 is used to reduce the first emitter electrode 43.
  • the electrode 41 and the second emitter electrode 42 are coupled to each other.
  • the electronic device 200 When the electronic device 200 receives the first signal from the touch pen 100 , the capacitance value at the corresponding position of the touch screen 201 will change. Accordingly, the electronic device 200 can determine the position of the stylus 100 (or the tip of the stylus 100 ) on the touch screen 201 based on the change of the capacitance value on the touch screen 201 . In addition, the electronic device 200 may acquire the inclination angle of the stylus 100 by using the double-tip projection method in the inclination angle detection algorithm. The positions of the first transmitting electrode 41 and the second transmitting electrode 42 in the stylus 100 are different. Therefore, when the electronic device 200 receives the first signal and the second signal from the stylus 100, two signals on the touch screen 201 The capacitance value at each location will change.
  • the electronic device 200 can obtain the inclination angle of the stylus 100 according to the distance between the first emitter electrode 41 and the second emitter electrode 42 and the distance between two positions on the touch screen 201 where the capacitance value changes, For more detailed acquisition of the inclination angle of the stylus 100, reference may be made to the related description of the dual-tip projection method in the prior art.
  • the stylus 100 further includes: a battery assembly 80 , and the battery assembly 80 is used to provide power to the circuit board 70 .
  • the battery assembly 80 may include a lithium-ion battery, or the battery assembly 80 may include a nickel-chromium battery, an alkaline battery, or a nickel-metal hydride battery, or the like.
  • the battery included in the battery assembly 80 may be a rechargeable battery or a disposable battery, wherein, when the battery included in the battery assembly 80 is a rechargeable battery, the stylus 100 can charge the battery assembly wirelessly. 80 in the battery to charge.
  • the electronic device 200 can send an uplink to the stylus 100 through the electrode array integrated on the touch screen 201 Signal.
  • the stylus 100 can receive the uplink signal through the receiving electrodes, and the stylus 100 transmits the downlink signal through the transmitting electrodes (eg, the first transmitting electrode 41 and the second transmitting electrode 42 ).
  • the downlink signal includes the above-mentioned first signal and second signal.
  • the electronic device 200 can determine the tip of the stylus 100 based on the capacitance value on the touch screen 201 The position of 10 on the touch screen 201 .
  • the uplink signal and the downlink signal may be square wave signals.
  • the wireless keyboard 300 may include a first part 301 and a second part 302 .
  • the wireless keyboard 300 may include: a keyboard body and a keyboard cover.
  • the first part 301 can be a keyboard cover
  • the second part 302 can be a keyboard body.
  • the first part 301 is used to place the electronic device 200, and the second part 302 may be provided with buttons, touch pads, etc. for user operations.
  • the first part 301 and the second part 302 of the wireless keyboard 300 need to be opened, and when the wireless keyboard 300 is not in use, the first part 301 and the second part 302 of the wireless keyboard 300 can be closed.
  • the first part 301 and the second part 302 of the wireless keyboard 300 are rotatably connected.
  • the first part 301 and the second part 302 can be connected by a rotating shaft or a hinge, or, in some examples, the first part 301 and the second part 302 can be rotationally connected by a flexible material (such as a leather material or a cloth material) .
  • the first part 301 and the second part 302 may be integrally formed, and the connection between the first part 301 and the second part 302 is processed by thinning, so that the connection between the first part 301 and the second part 302 is The connection can be bent.
  • the connection manner between the first part 301 and the second part 302 may include but not limited to the above-mentioned several rotational connection manners.
  • the first part 301 may include at least two rotatably connected brackets.
  • the first part 301 includes a first bracket 301a and a second bracket 301b, and the first bracket 301a and the second bracket 301b are rotatably connected to each other.
  • the first bracket 301a and the second bracket can be used 301b collectively supports the electronic device 200 (refer to FIG. 1 ).
  • the first bracket 301a provides support to the second bracket 301b
  • the second bracket 301b supports the electronic device 200 .
  • the second bracket 301b and the second part 302 are rotatably connected.
  • the wireless keyboard 300 may be provided with a storage portion 303 for storing the stylus 100 .
  • the accommodating portion 303 is a cylindrical cavity.
  • the connecting part 304 is provided with a receiving part 303 .
  • the connecting portion 304 may be a rotating shaft.
  • FIG. 5A is a schematic diagram of a stylus provided in an embodiment of the present application being stored in a storage portion of a wireless keyboard
  • FIG. 5B is a schematic side view of the stylus pen provided by an embodiment of the present application when stored in the storage portion of the wireless keyboard.
  • the accommodating portion 303 is a circular cavity, and the inner diameter of the accommodating portion 303 is larger than the outer diameter of the stylus 100 .
  • a magnetic material may be provided on the inner wall of the receiving portion 303 , and a magnetic material may be provided in the stylus 100 .
  • the stylus 100 is adsorbed in the receiving portion 303 by the magnetic adsorption between the magnetic materials.
  • the stylus 100 and the receiving part 303 can also be fixed by means of snapping .
  • a pop-up structure may be provided in the storage portion 303 .
  • the eject mechanism can drive one end of the stylus 100 to move outward from the storage portion 303 . pop up.
  • FIG. 6 is a schematic diagram of a hardware structure of a touch pen according to an embodiment of the present application.
  • the stylus 100 may have a processor 110 .
  • Processor 110 may include storage and processing circuitry for supporting the operation of stylus 100 .
  • the storage and processing circuitry may include storage devices such as non-volatile memory (eg, flash memory or other electrically programmable read-only memory configured as solid state drives), volatile memory (eg, static or dynamic random access memory) Wait.
  • Processing circuitry in the processor 110 may be used to control the operation of the stylus 100 .
  • the processing circuitry may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio chips, application specific integrated circuits, and the like.
  • the sensors may include pressure sensor 120 .
  • the pressure sensor 120 may be disposed on the writing end 11 of the stylus 100 (as shown in FIG. 2B ).
  • the pressure sensor 120 may also be disposed in the pen holder 20 of the stylus 100 , so that after one end of the pen tip 10 of the stylus 100 is subjected to force, the other end of the pen tip 10 moves to act on the pressure sensor 120 .
  • the processor 110 can adjust the line thickness of the pen tip 10 of the stylus 100 when writing according to the pressure detected by the pressure sensor 120 .
  • the sensors may also include inertial sensors 130 .
  • Inertial sensor 130 may include a three-axis accelerometer and a three-axis gyroscope, and/or other components for measuring movement of stylus 100, for example, a three-axis magnetometer may be included in a nine-axis inertial sensor configuration in the sensor.
  • the sensors may also include additional sensors, such as temperature sensors, ambient light sensors, light-based proximity sensors, contact sensors, magnetic sensors, pressure sensors, and/or other sensors.
  • Stylus 100 may include status indicators 140 such as light emitting diodes and buttons 150 therein.
  • the status indicator 140 is used to inform the user of the status of the stylus 100 .
  • Buttons 150 which may include mechanical buttons and non-mechanical buttons, may be used to collect button press information from a user.
  • the stylus 100 may include one or more electrodes 160 (for details, please refer to the description in FIG. 2B ), one of the electrodes 160 may be located at the writing end of the stylus 100 , and one of the electrodes 160 may be Located inside the pen tip 10, reference can be made to the above related description.
  • the stylus 100 may include a sensing circuit 170 therein.
  • the sensing circuit 170 can sense capacitive coupling between the electrodes 160 and the drive lines of the capacitive touch sensor panel that interacts with the stylus 100 .
  • Sensing circuit 170 may include an amplifier to receive capacitance readings from a capacitive touch sensor panel, a clock to generate a demodulated signal, a phase shifter to generate a phase shifted demodulated signal, to use an in-phase demodulation frequency components to demodulate capacitance readings, and mixers to demodulate capacitance readings using quadrature demodulation frequency components, etc.
  • the results of the mixer demodulation can be used to determine an amplitude proportional to capacitance so that the stylus 100 can sense contact with the capacitive touch sensor panel.
  • the stylus 100 may include a microphone, a speaker, an audio generator, a vibrator, a camera, a data port, and other devices.
  • a user may control the operation of the stylus 100 and the electronic device 200 with which the stylus 100 interacts by providing commands with these devices, and receive status information and other output.
  • the processor 110 may be used to run software on the stylus 100 that controls the operation of the stylus 100 .
  • software running on processor 110 may process sensor inputs, button inputs, and inputs from other devices to monitor stylus 100 movement and other user inputs.
  • Software running on the processor 110 can detect user commands and can communicate with the electronic device 200 .
  • the stylus 100 may include a wireless module.
  • the wireless module is the Bluetooth module 180 as an example for description.
  • the wireless module may also be a WI-FI hotspot module, a WI-FI point-to-point module, and the like.
  • the Bluetooth module 180 may include a radio frequency transceiver, such as a transceiver.
  • the Bluetooth module 180 may also include one or more antennas.
  • the transceiver may utilize the antenna to transmit and/or receive wireless signals, which may be Bluetooth signals, wireless local area network signals, long-range signals such as cellular telephone signals, near field communication signals, or other wireless signals based on the type of wireless module.
  • the stylus 100 may further include a charging module 190 , and the charging module 190 may support the charging of the stylus 100 and provide power for the stylus 100 .
  • the electronic device 200 in this embodiment of the present application may be referred to as a user equipment (user equipment, UE), a terminal (terminal), etc.
  • the electronic device 200 may be a tablet computer (portable android device, PAD), a personal digital processing (personal digital assistant, PDA), handheld devices, computing devices, in-vehicle devices or wearable devices with wireless communication functions, virtual reality (virtual reality, VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, industrial control Wireless terminals in (industrial control), wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, and transportation safety
  • a mobile terminal or a fixed terminal with a touch screen such as a wireless terminal in a smart city, a wireless terminal in a smart city, and a wireless terminal in a smart home.
  • the form of the terminal device is not specifically limited in the embodiments of the present application.
  • FIG. 7 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.
  • electronic device 200 may include multiple subsystems that cooperate to perform, coordinate, or monitor one or more operations or functions of electronic device 202.
  • Electronic device 200 includes processor 210 , input surface 220 , coordination engine 230 , power subsystem 240 , power connector 250 , wireless interface 260 , and display 270 .
  • coordination engine 230 may be used to communicate and/or process data with other subsystems of electronic device 200; communicate and/or transact data with stylus 100; measure and/or obtain one or more analog or digital output of a sensor (such as a touch sensor); measuring and/or obtaining the output of one or more sensor nodes of an array of sensor nodes (such as an array of capacitive sensing nodes); receiving and locating tip and ring signals from stylus 100 ; Position the stylus 100 and the like based on the positions of the tip signal intersection area and the ring signal intersection area.
  • a sensor such as a touch sensor
  • sensor nodes such as an array of sensor nodes
  • receiving and locating tip and ring signals from stylus 100 Position the stylus 100 and the like based on the positions of the tip signal intersection area and the ring signal intersection area.
  • the coordination engine 230 of the electronic device 200 includes or is otherwise communicatively coupled to a sensor layer underlying or integral with the input surface 220 .
  • the coordination engine 230 utilizes the sensor layer to position the stylus 100 on the input surface 220 and uses the techniques described herein to estimate the angular position of the stylus 100 relative to the plane of the input surface 220 .
  • input surface 220 may be referred to as touch screen 201 .
  • the sensor layer of the coordination engine 230 of the electronic device 200 is a grid of capacitive sensing nodes arranged in columns and rows. More specifically, the array of column traces is arranged perpendicular to the array of row traces.
  • the sensor layer may be separate from other layers of the electronic device, or the sensor layer may be disposed directly on another layer, such as but not limited to: display stack layers, force sensor layers, digitizer layers, polarizer layers, battery layers , structural or decorative shell layers, etc.
  • the sensor layer can operate in various modes. If operating in mutual capacitance mode, the column and row traces form a single capacitive sensing node at each overlapping point (eg, "vertical" mutual capacitance). If operating in self-capacitance mode, the column and row traces form two (vertically aligned) capacitive sensing nodes at each overlapping point. In another embodiment, if operating in mutual capacitance mode, adjacent column traces and/or adjacent row traces may each form a single capacitive sensing node (eg, "horizontal" mutual capacitance).
  • the sensor layer may detect the presence of the tip 10 of the stylus 100 and/or the touch of a user's finger by monitoring changes in capacitance (eg, mutual capacitance or self-capacitance) presented at each capacitive sensing node.
  • coordination engine 230 may be configured to detect tip and ring signals received from stylus 100 through the sensor layer via capacitive coupling.
  • the tip signal and/or the ring signal may include specific information and/or data that may be configured to cause the electronic device 200 to recognize the stylus 100 .
  • Such information is generally referred to herein as "stylus identity" information.
  • This information and/or data may be received by the sensor layer and interpreted, decoded and/or demodulated by the coordination engine 230 .
  • the processor 210 may use the stylus identity information to simultaneously receive input from more than one stylus.
  • the coordination engine 230 may be configured to transmit to the processor 210 the position and/or angular position of each of a number of styluses detected by the coordination engine 230 .
  • the coordination engine 230 may also transmit information to the processor 210 regarding the relative positions and/or relative angular positions of the plurality of styluses detected by the coordination engine 230 .
  • the coordination engine 230 may notify the processor 210 that the detected first stylus is located at a distance from the detected second stylus.
  • the end signal and/or the ring signal may also include specific information and/or data for enabling the electronic device 200 to identify a specific user. Such information is generally referred to herein as "User Identity” information.
  • Reconciliation engine 230 may forward user identity information (if detected and/or recoverable) to processor 210 . If the user identification information cannot be recovered from the tip signal and/or the ring signal, the coordination engine 230 may optionally indicate to the processor 210 that user identification information is not available. Processor 210 can utilize user identity information (or the absence of such information) in any suitable manner, including but not limited to accepting or denying input from a particular user, allowing or denying access to particular functions of the electronic device, and the like. The processor 210 may use the user identity information to simultaneously receive input from more than one user.
  • the tip signal and/or ring signal may include specific information and/or data that may be configured to cause the electronic device 200 to identify settings or preferences of the user or stylus 100 .
  • Such information is generally referred to herein as "stylus settings" information.
  • Coordination engine 230 may forward stylus setting information (if detected and/or recoverable) to processor 210 . If the stylus setting information cannot be recovered from the tip signal and/or the ring signal, the coordination engine 230 may optionally indicate to the processor 210 that the stylus setting information is not available.
  • Electronic device 200 can utilize the stylus setting information (or the absence of such information) in any suitable manner, including but not limited to: applying settings to the electronic device, applying settings to programs running on the electronic device, changing The line thickness, color, pattern presented by the graphics program of the electronic device, changing the settings of the video game operated on the electronic device, etc.
  • the processor 210 may be configured to perform, coordinate and/or manage the functions of the electronic device 200 .
  • Such functions may include, but are not limited to, communicating and/or transacting data with other subsystems of electronic device 200, communicating and/or transacting data with stylus 100, communicating and/or transacting data over a wireless interface, over wired
  • the interface communicates and/or trades data, facilitates the exchange of power through a wireless (eg, inductive, resonant, etc.) or wired interface, receives the position and angular position of one or more styluses, and the like.
  • the processor 210 may be implemented as any electronic device capable of processing, receiving or transmitting data or instructions.
  • a processor may be a microprocessor, a central processing unit, an application specific integrated circuit, a field programmable gate array, a digital signal processor, an analog circuit, a digital circuit, or a combination of these devices.
  • Processors can be single-threaded or multi-threaded.
  • the processor can be a single-core or multi-core processor.
  • the processor 210 may be configured to access memory in which instructions are stored.
  • the instructions may be configured to cause the processor to perform, coordinate or monitor one or more operations or functions of the electronic device 200 .
  • the instructions stored in memory may be configured to control or coordinate the operation of other components of electronic device 200, such as, but not limited to, another processor, analog or digital circuits, volatile or nonvolatile memory modules, Displays, speakers, microphones, rotary input devices, buttons or other physical input devices, biometric authentication sensors and/or systems, force or touch input/output components, communication modules (such as wireless interfaces and/or power connectors), and/or Haptic or haptic feedback devices.
  • the memory may also store electronic data usable by the stylus or the processor.
  • memory may store electronic data or content (such as media files, documents, and applications), device settings and preferences, timing and control signals, or data, data structures, or databases for various modules, and detection tip signals and/or Or ring signal related files or configurations, etc.
  • the memory can be configured as any type of memory.
  • the memory may be implemented as random access memory, read only memory, flash memory, removable memory, other types of storage elements, or a combination of such devices.
  • Electronic device 200 also includes power subsystem 240 .
  • Power subsystem 240 may include a battery or other power source. Power subsystem 240 may be configured to provide power to electronic device 200 .
  • Power subsystem 240 may also be coupled to power connector 250 .
  • Power connector 250 may be any suitable connector or port that may be configured to receive power from an external power source and/or configured to provide power to an external load. For example, in some embodiments, power connector 250 may be used to recharge a battery within power subsystem 240 . In another embodiment, power connector 250 may be used to transfer power stored (or available to) within power subsystem 240 to stylus 100 .
  • the electronic device 200 also includes a wireless interface 260 to facilitate electronic communication between the electronic device 200 and the stylus 100 .
  • the electronic device 200 may be configured to communicate with the stylus 100 via a low energy Bluetooth communication interface or a near field communication interface.
  • the communication interface facilitates electronic communication between the electronic device 200 and an external communication network, device or platform.
  • Wireless interface 260 may be implemented as one or more wireless interfaces, Bluetooth interfaces, near field communication interfaces, magnetic interfaces, universal serial Bus interface, inductive interface, resonant interface, capacitive coupling interface, Wi-Fi interface, TCP/IP interface, network communication interface, optical interface, acoustic interface or any traditional communication interface.
  • the electronic device 200 also includes a display 270 .
  • Display 270 may be located behind input surface 220, or may be integral therewith.
  • Display 270 may be communicatively coupled to processor 210 .
  • Processor 210 may use display 270 to present information to a user. In many cases, processor 210 uses display 270 to present an interface with which a user can interact. In many cases, the user manipulates the stylus 100 to interact with the interface.
  • FIG. 8 is a schematic diagram of a hardware structure of a wireless keyboard according to an embodiment of the present application.
  • the wireless keyboard 300 may include a processor 310 , a memory 320 , a charging interface 330 , a charging management module 340 , a wireless charging coil 350 , a battery 360 , a wireless communication module 370 , a touch panel 380 , and a keyboard 390 .
  • the processor 310, the memory 320, the charging interface 330, the charging management module 340, the battery 360, the wireless communication module 370, the touch panel 380, the keyboard 390, etc. can all be arranged on the keyboard body of the wireless keyboard 300 (ie, as shown in FIG. 1 ). shown on the second portion 302).
  • the above-mentioned wireless charging coil 350 may be disposed in the connecting portion 304 (as shown in FIG. 4 ) for movably connecting the keyboard body and the bracket. It can be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the wireless keyboard 300 . In other embodiments, the wireless keyboard 300 may include more or fewer components than shown, or some components may be combined, or some components may be split, or a different arrangement of components.
  • the illustrated components may be implemented in hardware, software, or a combination of software and hardware.
  • the memory 320 may be used for storing program codes, such as program codes for wirelessly charging the stylus 100, and the like.
  • the memory 320 may also store a Bluetooth address for uniquely identifying the wireless keyboard 300 .
  • the memory 320 may also store connection data of the electronic device that has been successfully paired with the wireless keyboard 300 before.
  • the connection data may be the Bluetooth address of the electronic device that has been successfully paired with the wireless keyboard 300 .
  • the wireless keyboard 300 can be automatically paired with the electronic device without having to configure the connection therewith, such as performing legality verification.
  • the above Bluetooth address may be a media access control (media access control, MAC) address.
  • the processor 310 may be configured to execute the above-mentioned application program code, and invoke relevant modules to implement the functions of the wireless keyboard 300100 in the embodiment of the present application.
  • the processor 310 may include one or more processing units, and different processing units may be independent devices, or may be integrated into one or more processors 310 .
  • the processor 310 may specifically be an integrated control chip, or may be composed of a circuit including various active and/or passive components, and the circuit is configured to perform the functions of the processor 310 described in the embodiments of the present application.
  • the processor of the wireless keyboard 300 may be a microprocessor.
  • the wireless communication module 370 may be used to support the communication between the wireless keyboard 300 and other electronic devices, including Bluetooth (bluetooth, BT), global navigation satellite system (GNSS), wireless local area networks (wireless local area networks, WLAN) (such as Wireless fidelity (wireless fidelity, Wi-Fi) network), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication data exchange.
  • Bluetooth bluetooth, BT
  • GNSS global navigation satellite system
  • WLAN wireless local area networks
  • FM wireless fidelity
  • NFC near field communication technology
  • infrared technology infrared, IR
  • the wireless communication module 370 may be a Bluetooth chip.
  • the wireless keyboard 300 may be a Bluetooth keyboard.
  • the wireless keyboard 300 can be paired with the Bluetooth chips of other electronic devices through the Bluetooth chip and establish a wireless connection, so as to realize wireless communication between the wireless keyboard 300 and other electronic devices through the wireless connection.
  • the wireless communication module 370 may also include an antenna, and the wireless communication module 370 receives electromagnetic waves via the antenna, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 310.
  • the wireless communication module 370 can also receive the signal to be sent from the processor 310, perform frequency modulation on it, amplify it, and convert it into electromagnetic waves for radiation through the antenna.
  • the wireless keyboard 300 may support wired charging.
  • the charging management module 340 may receive the charging input of the wired charger through the charging interface 330 .
  • the wireless keyboard 300 may support forward wireless charging.
  • the charging management module 340 may receive wireless charging input through the wireless charging coil 350 of the wireless keyboard 300 .
  • the charging management module 340 is connected with the wireless charging coil 350 through a matching circuit.
  • the wireless charging coil 350 can be coupled with the wireless charging coil of the above-mentioned wireless charger, and induce an alternating electromagnetic field emitted by the wireless charging coil 350 of the wireless charger to generate an alternating electric signal.
  • the alternating electrical signal generated by the wireless charging coil 350 is transmitted to the charging management module 340 through the matching circuit, so as to charge the battery 360 wirelessly.
  • the charging management module 340 can also provide power for the wireless keyboard 300 while charging the battery 360 .
  • the charging management module 340 receives the input of the battery 360, and supplies power to the processor 310, the memory 320, the external memory, the wireless communication module 370, and the like.
  • the charging management module 340 can also be used to monitor the battery capacity of the battery 360, the number of battery cycles, the battery health status (leakage, impedance) and other parameters.
  • the charging management module 340 may also be provided in the processor 310 .
  • the wireless keyboard 300 may support reverse wireless charging.
  • the charging management module 340 may also receive an input from the charging interface 330 or the battery 360, and convert the DC signal input from the charging interface 330 or the battery 360 into an AC signal.
  • the AC signal is transmitted to the wireless charging coil 350 through the matching circuit.
  • the wireless charging coil 350 can generate an alternating electromagnetic field upon receiving the alternating current signal.
  • the wireless charging coils of other mobile terminals sense the alternating electromagnetic field and can perform wireless charging. That is, the wireless keyboard 300 can also wirelessly charge other mobile terminals.
  • the wireless charging coil 350 may be disposed in the receiving portion 303 of the wireless keyboard 300 , and the wireless charging coil is disposed in the pen holder 20 of the stylus 100 . When the stylus 100 is placed in the receiving portion 303 , the The wireless keyboard 300 can charge the stylus 100 through the wireless charging coil 350 .
  • FIG. 8 shows a schematic diagram of the hardware structure of the wireless keyboard 300 by taking as an example that the matching circuit can be integrated in the charging management module 340 .
  • the charging interface 330 can be used to provide a wired connection for charging or communication between the wireless keyboard 300 and other electronic devices (eg, a wired charger of the wireless keyboard 300 ).
  • a touch sensor is integrated into the above-mentioned touch panel 380 .
  • the notebook computer can receive user control commands on the notebook computer through the touchpad 380 and the keyboard 390 .
  • the structures illustrated in the embodiments of the present application do not constitute a specific limitation on the wireless keyboard 300 . It may have more or fewer components than those shown in Figure 8, may combine two or more components, or may have a different configuration of components.
  • the housing of the wireless keyboard 300 may also be provided with a storage cavity for storing the stylus 100 .
  • the wireless charging coil 350 is disposed in the receiving cavity, and is used for wirelessly charging the stylus 100 after the stylus 100 is stored in the receiving cavity.
  • the outer surface of the wireless keyboard 300 may also include buttons, indicator lights (which can indicate states such as battery level, incoming/outgoing calls, pairing mode, etc.), and a display screen (which can prompt the user for relevant information) and other components.
  • the key may be a physical key or a touch key (used in conjunction with a touch sensor), etc., for triggering operations such as power-on, power-off, charging start, and charging stop.
  • FIG. 9 shows a schematic diagram of a possible wireless charging link.
  • a tablet computer portable android device, PAD
  • PAD portable android device
  • the PAD includes: a PAD battery, a boost (BOOST) chip, a transmission (transport, TX) chip and a coil.
  • the stylus includes a coil, a receive (RX) chip, a charger (charger) chip and a battery.
  • the PAD battery voltage is input to the Boost chip, the Boost chip raises the PAD battery voltage, and the raised voltage is used to power the TX chip; the voltage conversion efficiency in this process is estimated ⁇ 1 .
  • the TX chip converts the DC signal provided by the Boost chip into an AC signal after inversion, pushes it to the coil, and sends it out through the coil; the conversion efficiency of this process is estimated to be ⁇ 2 .
  • the coil of the PAD and the coil of the stylus are electromagnetically coupled to transmit energy from the PAD to the stylus; the transmission process has a coupling efficiency, and the estimated efficiency is ⁇ 3 .
  • the RX chip couples the AC signal to the coil of the stylus, and outputs a stable DC signal after rectification and voltage change; the estimated efficiency of this process is ⁇ 4 .
  • the RX chip outputs a DC signal, and the DC signal needs to be processed by the charger chip to charge the battery of the stylus; the estimated efficiency of this process is ⁇ 5 .
  • the total ⁇ is about 35%.
  • the link efficiency is low, and the PAD and stylus generate serious heat during the charging process, resulting in low charging efficiency.
  • the embodiment of the present application provides a wireless charging circuit, which can optimize the overall efficiency of the wireless charging link.
  • the chip and the charger chip are designed as one device. After the energy is coupled from the coil in the stylus, it can be directly output to the battery of the stylus after passing through the device, which can shorten the wireless charging link and improve the link efficiency, thereby reducing the touch point.
  • the temperature rise of the pen rechargeable type improves the charging efficiency.
  • RX chip and the charger chip are designed as one device in the embodiments of the present application is because it is found that there are identical or similar functional devices in the RX chip and the charger chip.
  • FIG. 10 shows a schematic diagram of the internal structure of an RX chip.
  • FIG. 11 shows a schematic diagram of the internal structure of a charger chip.
  • the RX chip includes: a rectifier 1001 , a low dropout regulator (LDO) 1002 , a micro control unit (MCU) 1003 and a protocol encoding/decoding unit 1004 .
  • LDO low dropout regulator
  • MCU micro control unit
  • the rectifier 1001 is used for rectifying the AC signal coupled by the coil in the stylus to obtain a relatively stable DC signal, and the DC signal is used as the input of the LDO 1002 .
  • the LDO1002 is used to convert the rectified DC signal into a standard 5V (of course, it can be any other voltage value, which is not limited in this embodiment of the present application) voltage signal, which is used as the input signal of the charger chip.
  • the MCU1003 is used for the execution of software codes in the stylus, etc., and can be controlled by registers.
  • the protocol encoding and decoding unit 1004 is used to communicate with the TX chip.
  • the protocol encoding and decoding unit 1004 may include an amplitude-shift keying (ASK) modulation format or a frequency-shift keying (frequency-shift keying, FSK) modulation format, which is not specifically limited in the embodiments of the present application.
  • ASK amplitude-shift keying
  • FSK frequency-shift keying
  • the LDO 1002 generally includes a field effect transistor 10021, for example, the field effect transistor may include a metal-oxide-semiconductor field-effect transistor (MOSFET).
  • MOSFET metal-oxide-semiconductor field-effect transistor
  • the charger chip includes: a field effect transistor 1101 (hereinafter referred to as Q1), a field effect transistor 1102 (hereinafter referred to as Q2), and a control circuit for controlling Q1 and Q2.
  • Q1 a field effect transistor 1101
  • Q2 a field effect transistor 1102
  • Q2 a field effect transistor 1102
  • the control circuit may be implemented in hardware or in software, which is not limited in this embodiment of the present application.
  • Q1 can be a MOSFET or the like, which is used as the main LDO to stabilize the input signal VIN from the RX chip and then supply power to the post-stage system.
  • Q2 can be a MOSFET or the like, which is used to isolate the system power supply from the battery and function as dynamic path management.
  • the physical implementation of the LDO in the RX chip can be one MOSFET
  • the physical implementation of the charger chip can be two MOSFETs
  • the function of the previous MOSFET (Q1) in the charger chip is the same as that of the LDO. function the same. Therefore, in the embodiment of the present application, the LDO in the RX chip can be multiplexed with Q1 in the charger chip, and the RX chip and the charger chip can be designed as one device, so that the device can not only realize the functions of the RX chip and the charger chip, but also
  • the wireless charging link can be shortened and the link efficiency can be improved, thereby reducing the temperature rise of the stylus charging type and improving the charging efficiency.
  • the LDO 1002 in FIG. 10 and the FET 1101 in FIG. 11 for realizing the LDO function may also be replaced by a boost circuit (buck) or a switched capacitor (SC) Amplifying circuit for higher power charging.
  • the buck may include 2 MOSFETs, and the SC may include 9 MOSFETs, which are not limited in the embodiment of the present application.
  • FIG. 12 shows a schematic diagram of a chip of an embodiment of the present application, and the chip can implement the functions of an RX chip and a charger chip.
  • the chip includes: rectifier 1201, LDO/Buck/SC charger1202 (that is, the above-mentioned part used to realize the functions of LDO/Buck/SC and charger chip, which may be called charger unit), MCU1203 and protocol Codec unit 1204.
  • rectifier 1201 LDO/Buck/SC charger1202 (that is, the above-mentioned part used to realize the functions of LDO/Buck/SC and charger chip, which may be called charger unit)
  • MCU1203 protocol Codec unit 1204.
  • the rectifier 1201 is used to rectify the AC signal coupled by the coil in the stylus to obtain a relatively stable DC signal, and the DC signal is used as the input of the LDO/Buck/SC charger1202.
  • LDO/Buck/SC charger1202 is used to stabilize the rectified DC signal, etc., and charge the battery.
  • MCU1203 is used to control wireless communication, LDO/Buck/SC charger1202 and protocol encoding/decoding unit 1204, etc.
  • the protocol encoding and decoding unit 1204 is used to communicate with the TX chip.
  • the protocol encoding and decoding unit 1204 may include an amplitude-shift keying (amplitude-shift keying, ASK) modulation format or a frequency-shift keying (frequency-shift keying, FSK) modulation format, etc., which are not specifically limited in the embodiments of the present application.
  • the RX chip and the charger chip are designed as one chip, not only the functions of the RX chip and the charger chip can be realized, but also the wireless charging link can be shortened, the link efficiency can be improved, and the The temperature rise of the rechargeable stylus improves the charging efficiency.
  • FIGS. 13-15 respectively show schematic diagrams of hardware structures of a chip including an LDO charger, a chip including a Buck charger, and a chip including an SC charger.
  • the charger unit 1202 of FIG. 12 may include an LDO charger12021, and the LDO charger12021 includes: a first field effect transistor control module 120210, a first field effect transistor 120211 and a second field effect transistor 120212.
  • the gate terminal of the first field effect transistor 120211 and the gate terminal of the second field effect transistor 120212 are respectively connected to the first field effect transistor control module 120210, and the source terminal of the first field effect transistor 120211 is connected to the output terminal of the rectifier 1201. , the drain terminal of the first field effect transistor 120211 is connected to the source terminal of the second field effect transistor 120212, and the drain terminal of the second field effect transistor 120212 is used to charge the battery of the stylus.
  • the first field effect transistor control module 120210 is used to control the voltage values of the gate terminal of the first field effect transistor 120211 and the gate terminal of the second field effect transistor 120212, so as to realize the control of the first field effect transistor 120211 and the second field effect transistor 120212. of turn-on and turn-off control.
  • the first FET 120211 is used to stabilize the voltage output by the rectifier 1201 to the charging voltage required by the stylus
  • the second FET 120212 is used to isolate the system power supply of the chip from the battery of the stylus.
  • drain terminal of the first field effect transistor 120211 can also be used to provide voltage output for other devices, for example, the drain terminal of the first field effect transistor 120211 can output Vsys, etc., which is not specifically limited in this embodiment of the present application.
  • the chip includes an LDO charger12021, the number of field effect transistors included in the LDO charger12021 is small, and the structure is relatively simple.
  • the charger unit 1202 of FIG. 12 may include a Buck charger12022, and the Buck charger12022 includes: a second field effect transistor control module 120220, a third field effect transistor 120221, a fourth field effect transistor 120222, and a fifth field effect transistor 120223.
  • the gate terminal of the third field effect transistor 120221, the gate terminal of the fourth field effect transistor 120222 and the gate terminal of the fifth field effect transistor 120223 are respectively connected to the second field effect transistor control module 120220, and the third field effect transistor 120221
  • the source terminal is connected to the output terminal of the rectifier 1201
  • the drain terminal of the third field effect transistor 120221 is connected to the source terminal of the fourth field effect transistor 120222 and one end of the inductor L
  • the drain terminal of the fourth field effect transistor 120222 is connected to the fourth field effect transistor 120222.
  • the source terminal of the five field effect transistors 120223 is connected to the other terminal of the inductor L, and the drain terminal of the fifth field effect transistor 120223 is used to charge the battery of the stylus.
  • the second field effect transistor control module 120220 is used to control the voltage values of the gate terminal of the third field effect transistor 120221, the gate terminal of the fourth field effect transistor 120222 and the gate terminal of the fifth field effect transistor 120223, so as to realize the control of the third field effect transistor. Control of the turn-on and turn-off of the effect transistor 120221, the fourth field effect transistor 120222 and the fifth field effect transistor 120223.
  • the third field effect transistor 120221, the fourth field effect transistor 120222 and the inductor L can realize flexible and stable conversion of VIN to obtain the charging voltage required by the stylus; the fifth field effect transistor 120223 is used to isolate the system power supply and touch control of the chip Pen battery.
  • drain terminal of the fourth field effect transistor 120222 can also be used to provide voltage output for other devices, for example, the drain terminal of the fourth field effect transistor 120222 can output Vsys, etc., which is not specifically limited in this embodiment of the present application.
  • the chip includes Buck charger12022, and the number of FETs included in Buck charger12022 is larger than that of LDO charger12021.
  • the third FET 120221, the fourth FET 120222 and the inductor L can realize VIN flexible and stable conversion, high efficiency.
  • the charger unit 1202 of FIG. 12 may include an SC charger12023, and the SC charger12023 includes: a third field effect transistor control module 120230, a sixth field effect transistor 120231, a seventh field effect transistor 120232, and an eighth field effect transistor 120233, the ninth field effect transistor 120234, the tenth field effect transistor 120235, the eleventh field effect transistor 120236, the twelfth field effect transistor 120237, the thirteenth field effect transistor 120238 and the fourteenth field effect transistor 120239.
  • the SC charger12023 includes: a third field effect transistor control module 120230, a sixth field effect transistor 120231, a seventh field effect transistor 120232, and an eighth field effect transistor 120233, the ninth field effect transistor 120234, the tenth field effect transistor 120235, the eleventh field effect transistor 120236, the twelfth field effect transistor 120237, the thirteenth field effect transistor 120238 and the fourteenth field effect transistor 120239.
  • the sixth field effect transistor 120231, the seventh field effect transistor 120232, the eighth field effect transistor 120233, the ninth field effect transistor 120234, the tenth field effect transistor 120235, the eleventh field effect transistor 120236, the twelfth field effect transistor The gate terminals of the transistor 120237 , the thirteenth FET 120238 and the fourteenth FET 120239 are respectively connected to the third FET control module 120230 .
  • the source terminal of the sixth field effect transistor 120231 is connected to the output terminal of the rectifier 1201, the drain terminal of the sixth field effect transistor 120231 is connected to the source terminal of the seventh field effect transistor 120232 and the source terminal of the eleventh field effect transistor 120236 , the drain terminal of the seventh field effect transistor 120232 is connected to the source terminal of the eighth field effect transistor 120233 and one end of the capacitor C1, the drain terminal of the eighth field effect transistor 120233 is connected to the source terminal of the ninth field effect transistor 120234, the The drain terminal of the twelfth field effect transistor 120237 and the source terminal of the thirteenth field effect transistor 120238 are connected, the drain terminal of the ninth field effect transistor 120234 is connected to the source terminal of the tenth field effect transistor 120235 and the other end of the capacitor C1.
  • the drain terminal of the tenth field effect transistor 120235 and the drain terminal of the fourteenth field effect transistor 120239 are both grounded; the drain terminal of the eleventh field effect transistor 120236 is connected to the source terminal of the twelfth field effect transistor 120237 and one end of the capacitor C2; The drain terminal of the twelfth field effect transistor 120237 is connected to the source terminal of the thirteenth field effect transistor 120238; the drain terminal of the thirteenth field effect transistor 120238 is connected to the source terminal of the fourteenth field effect transistor 120239 and the other end of the capacitor C2 connection; wherein, the drain terminal of the eighth field effect transistor 120233 is connected to the drain terminal of the twelfth field effect transistor 120237 for charging the battery of the stylus.
  • the sixth field effect transistor 120231, the seventh field effect transistor 120232, the eighth field effect transistor 120233, the ninth field effect transistor 120234, the tenth field effect transistor 120235, the eleventh field effect transistor 120236, the twelfth field effect transistor 120237 , the thirteenth FET 120238, the fourteenth FET 120239, the capacitor C1 and the capacitor C2 can realize the flexible and stable conversion of VIN, and isolate the system power supply of the chip and the battery of the stylus.
  • FIG. 16 shows a schematic diagram of a wireless charging link according to an embodiment of the present application.
  • the PAD is used to charge the stylus.
  • the PAD includes: a PAD battery, a boost (BOOST) chip, a transmission (transport, TX) chip and a coil.
  • the stylus includes: a coil, a chip 1301 (for implementing RX and charger functions) and a battery.
  • the PAD battery voltage is input to the Boost chip, the Boost chip raises the PAD battery voltage, and the raised voltage is used to power the TX chip; the voltage conversion efficiency in this process is estimated ⁇ 1 .
  • the TX chip converts the DC signal provided by the Boost chip into an AC signal after inversion, pushes it to the coil, and sends it out through the coil; the conversion efficiency of this process is estimated to be ⁇ 2 .
  • the coil of the PAD and the coil of the stylus are electromagnetically coupled to transmit energy from the PAD to the stylus; the transmission process has a coupling efficiency, and the estimated efficiency is ⁇ 3 .
  • the chip 1601 couples the AC signal to the coil of the stylus, outputs a stable DC signal after rectification and voltage change, and charges the battery of the stylus; the estimated efficiency of this process is ⁇ 6 .
  • n 6 and the above-mentioned n 4 may be the same or different, which are not specifically limited in the embodiments of the present application.
  • the wireless charging link in FIG. 16 reduces an efficiency-generating link. Therefore, the link efficiency of the wireless charging link in FIG. 16 is higher, so that the stylus can be reduced.
  • the rechargeable temperature rise increases the charging efficiency.
  • the chip 1301 in the embodiment of the present application may be an RX chip or a charger chip, etc., but the function of the chip 1601 includes both the RX function and the charger function, and the specific title of the chip 1601 is not limited in the embodiment of the present application.
  • the PAD in the embodiment of the present application may be replaced with a wireless keyboard or the like, and the stylus and the like may be charged based on the wireless keyboard.
  • chip and the wireless charging circuit in the embodiments of the present application can also be applied to other applicable wireless charging scenarios, and the embodiments of the present application do not specifically limit the wireless charging scenarios.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Health & Medical Sciences (AREA)
  • Position Input By Displaying (AREA)
  • User Interface Of Digital Computer (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

本申请实施例提供了无线充电系统、芯片和无线充电电路，涉及无线充电技术领域。无线充电系统包括电子设备和触控笔，电子设备用于为触控笔无线充电；触控笔包括无线充电电路；其中，无线充电电路包括：第一线圈、芯片和第一电池；第一线圈用于与第二线圈耦合得到交流信号；芯片包括整流器、充电器单元、微控制单元和协议编解码单元；充电器单元包括：稳压充电电路、升压充电电路或开关电容充电电路；充电器单元，用于利用来自整流器的直流信号为第一电池充电。这样触控笔中从线圈耦合能量之后，经过该芯片后可以直接输出至触控笔的电池，从而缩短无线充电链路，提升链路效率。

Description

无线充电系统、芯片和无线充电电路
本申请要求于2021年03月31日提交中国国家知识产权局、申请号为202110348557.4、申请名称为“无线充电系统、芯片和无线充电电路”的中国专利申请的优先权，以及于2021年03月15日提交中国国家知识产权局、申请号为202110293428.X、申请名称为“一种手写笔及其使用方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及无线充电技术领域，尤其涉及一种无线充电系统、芯片和无线充电电路。
背景技术
无线充电技术源于无线电能传输技术，其原理是充电器与用电装置之间以磁场传送能量。具体的，充电器可以产生电磁信号，用电装置可以感应到电磁信号，则在用电装置中可以产生电流给电池充电。无线充电因为不需要附加的导线等配件，在当前的电子设备中得到较多应用。
例如，在手写笔领域，充电器可以是无线键盘或电子设备，用电设备可以是触控笔。触控笔可以基于无线键盘或电子设备实现无线充电。
但是，当前的无线充电产品总是存在充电效率低下的问题。
发明内容
本申请实施例提供一种无线充电系统、芯片和无线充电电路，可以缩短无线充电链路，提升链路效率。
第一方面，本申请实施例提供一种无线充电系统，包括电子设备和触控笔。其中，触控笔也可以称为手写笔等。
具体的，电子设备用于为触控笔无线充电；触控笔包括无线充电电路；其中，无线充电电路包括：第一线圈、芯片和第一电池；第一线圈用于与第二线圈耦合得到交流信号；芯片用于根据交流信号为第一电池充电；其中，充电器单元包括：稳压充电电路、升压充电电路或开关电容充电电路；其中，芯片包括整流器、充电器单元、微控制单元和协议编解码单元；整流器，用于将输入的交流信号整流为直流信号；充电器单元，用于利用来自整流器的直流信号为第一电池充电；协议编解码单元，用于与发送芯片通信；微控制单元，用于控制充电器单元和协议编解码单元。
本申请实施例可以将触控笔的RX芯片和charger芯片设计为一个器件，触控笔中从线圈耦合能量之后，经过该器件后可以直接输出至触控笔的电池，这样可以缩短无线充电链路，提升链路效率，从而可以降低触控笔充电式的温升，提升充电效率。
在一种可能的设计中，稳压充电电路包括：第一场效应管控制模块、第一场效应管和第二场效应管；其中，第一场效应管的栅极端和第二场效应管的栅极端分别与第一场效应管控制模块连接，第一场效应管的源级端与整流器的输出端连接，第一场效应管的漏级端与第二场效应管的源极端连接，第二场效应管的漏级端用于向触控笔的电池充电。
这样，芯片中包括LDO charger，LDO charger中包含的场效应管的数量较少，结构较为简单。
在一种可能的设计中，稳压充电电路包括：第二场效应管控制模块、第三场效应管、第四场效应管和第五场效应管；其中，第三场效应管的栅极端、第四场效应管的栅极端和第五场效应管的栅极端分别与第二场效应管控制模块连接，第三场效应管的源级端与整流器的输出端连接，第三场效应管的漏级端与第四场效应管的源极端以及电感L的一端连接，第四场效应管的漏级端与第五场效应管的源极端以及电感L的另一端连接，第五场效应管的漏级端用于向触控笔的电池充电。
这样，芯片中包括Buck charger，Buck charger中包含的场效应管的数量相较于LDO charger较多，第三场效应管、第四场效应管以及电感L可以实现对电压的灵活稳定转换，效率较高。
在一种可能的设计中，稳压充电电路包括：第三场效应管控制模块、第六场效应管、第七场效应管、第八场效应管、第九场效应管、第十场效应管、第十一场效应管、第十二场效应管、第十三场效应管和第十四场效应管。
其中，第六场效应管、第七场效应管、第八场效应管、第九场效应管、第十场效应管、第十一场效应管、第十二场效应管、第十三场效应管和第十四场效应管各自的栅极端分别与第三场效应管控制模块连接；第六场效应管的源级端与整流器的输出端连接，第六场效应管的漏级端与第七场效应管的源极端以及第十一场效应管的源极端连接，第七场效应管的漏级端与第八场效应管的源极端以及电容C1的一端连接，第八场效应管的漏级端与第九场效应管的源极端、第十二场效应管的漏极端以及第十三场效应管的源极端连接，第九场效应管的漏极端与第十场效应管的源极端以及电容C1的另一端连接，第十场效应管的漏极端与第十四场效应管的漏极端均接地，第十一场效应管的漏极端与第十二场效应管的源极端以及电容C2的一端连接，第十二场效应管的漏极端与第十三场效应管的源极端连接；第十三场效应管的漏极端与第十四场效应管的源极端以及电容C2的另一端连接，其中，第八场效应管的漏级端与第十二场效应管的漏极端连接后用于向触控笔的电池充电。
在一种可能的设计中，电子设备包括：第二电池、升压芯片、发送芯片以及第二线圈；第二电池用于将电压输入升压芯片；升压芯片用于将电压抬升，得到第一直流信号；发送芯片用于将第一直流信号逆变为第一交流信号，并将第一交流信号传输到第二线圈；第二线圈用于通过第一交流信号与第一线圈耦合。这样，可以利用电子设备为触控笔充电。
在一种可能的设计中，电子设备为平板电脑或无线键盘。适用于触控笔的使用场景。
第二方面，本申请实施例提供一种芯片，包括：整流器、充电器单元、微控制单元和协议编解码单元；整流器，用于将输入的交流信号整流为直流信号；充电器单元，用于利用来自整流器的直流信号为电池充电；其中，充电器单元包括：稳压充电电路、升压充电电路或开关电容充电电路；协议编解码单元，用于与发送芯片通信；微控制单元，用于控制充电器单元和协议编解码单元。
在一种可能的设计中，稳压充电电路包括：第一场效应管控制模块、第一场效应管和第二场效应管；其中，第一场效应管的栅极端和第二场效应管的栅极端分别与第一场效应管控制模块连接，第一场效应管的源级端与整流器的输出端连接，第一场效应管的漏级端与第二场效应管的源极端连接，第二场效应管的漏级端用于向触控笔的电池充电。
在一种可能的设计中，稳压充电电路包括：第二场效应管控制模块、第三场效应管、第四场效应管和第五场效应管；其中，第三场效应管的栅极端、第四场效应管的栅极端和第五场效应管的栅极端分别与第二场效应管控制模块连接，第三场效应管的源级端与整流器的输 出端连接，第三场效应管的漏级端与第四场效应管的源极端以及电感L的一端连接，第四场效应管的漏级端与第五场效应管的源极端以及电感L的另一端连接，第五场效应管的漏级端用于向触控笔的电池充电。
在一种可能的设计中，稳压充电电路包括：第三场效应管控制模块、第六场效应管、第七场效应管、第八场效应管、第九场效应管、第十场效应管、第十一场效应管、第十二场效应管、第十三场效应管和第十四场效应管；其中，第六场效应管、第七场效应管、第八场效应管、第九场效应管、第十场效应管、第十一场效应管、第十二场效应管、第十三场效应管和第十四场效应管各自的栅极端分别与第三场效应管控制模块连接；第六场效应管的源级端与整流器的输出端连接，第六场效应管的漏级端与第七场效应管的源极端以及第十一场效应管的源极端连接，第七场效应管的漏级端与第八场效应管的源极端以及电容C1的一端连接，第八场效应管的漏级端与第九场效应管的源极端、第十二场效应管的漏极端以及第十三场效应管的源极端连接，第九场效应管的漏极端与第十场效应管的源极端以及电容C1的另一端连接，第十场效应管的漏极端与第十四场效应管的漏极端均接地，第十一场效应管的漏极端与第十二场效应管的源极端以及电容C2的一端连接，第十二场效应管的漏极端与第十三场效应管的源极端连接；第十三场效应管的漏极端与第十四场效应管的源极端以及电容C2的另一端连接，其中，第八场效应管的漏级端与第十二场效应管的漏极端连接后用于向触控笔的电池充电。
第三方面，本申请实施例提供一种无线充电电路，应用于触控笔，无线充电电路包括：第一线圈、芯片和第一电池；第一线圈用于与第二线圈耦合得到交流信号；芯片用于根据交流信号为第一电池充电；其中，芯片包括整流器、充电器单元、微控制单元和协议编解码单元；整流器，用于将输入的交流信号整流为直流信号；充电器单元，用于利用来自整流器的直流信号为第一电池充电；其中，充电器单元包括：稳压充电电路、升压充电电路或开关电容充电电路；协议编解码单元，用于与发送芯片通信；微控制单元，用于控制充电器单元和协议编解码单元。
在一种可能的设计中，稳压充电电路包括：第一场效应管控制模块、第一场效应管和第二场效应管；其中，第一场效应管的栅极端和第二场效应管的栅极端分别与第一场效应管控制模块连接，第一场效应管的源级端与整流器的输出端连接，第一场效应管的漏级端与第二场效应管的源极端连接，第二场效应管的漏级端用于向触控笔的电池充电。
在一种可能的设计中，稳压充电电路包括：第二场效应管控制模块、第三场效应管、第四场效应管和第五场效应管；其中，第三场效应管的栅极端、第四场效应管的栅极端和第五场效应管的栅极端分别与第二场效应管控制模块连接，第三场效应管的源级端与整流器的输出端连接，第三场效应管的漏级端与第四场效应管的源极端以及电感L的一端连接，第四场效应管的漏级端与第五场效应管的源极端以及电感L的另一端连接，第五场效应管的漏级端用于向触控笔的电池充电。
在一种可能的设计中，稳压充电电路包括：第三场效应管控制模块、第六场效应管、第七场效应管、第八场效应管、第九场效应管、第十场效应管、第十一场效应管、第十二场效应管、第十三场效应管和第十四场效应管；其中，第六场效应管、第七场效应管、第八场效应管、第九场效应管、第十场效应管、第十一场效应管、第十二场效应管、第十三场效应管和第十四场效应管各自的栅极端分别与第三场效应管控制模块连接；第六场效应管的源级端与整流器的输出端连接，第六场效应管的漏级端与第七场效应管的源极端以及第十一场效应管的源极端连接，第七场效应管的漏级端与第八场效应管的源极端以及电容C1的一端连接， 第八场效应管的漏级端与第九场效应管的源极端、第十二场效应管的漏极端以及第十三场效应管的源极端连接，第九场效应管的漏极端与第十场效应管的源极端以及电容C1的另一端连接，第十场效应管的漏极端与第十四场效应管的漏极端均接地，第十一场效应管的漏极端与第十二场效应管的源极端以及电容C2的一端连接，第十二场效应管的漏极端与第十三场效应管的源极端连接；第十三场效应管的漏极端与第十四场效应管的源极端以及电容C2的另一端连接，其中，第八场效应管的漏级端与第十二场效应管的漏极端连接后用于向触控笔的电池充电。
上述第二方面以及上述第三方面的以及各可能的设计中的有益效果可以参见上述第一方面和第一方面的各可能的实施方式所带来的有益效果，在此不再赘述。
附图说明
图1为本申请实施例适用的一种场景示意图；
图2A为本申请实施例提供的触控笔的结构示意图；
图2B为本申请实施例提供的触控笔的部分拆分结构示意图；
图3为本申请实施例提供的触控笔与电子设备交互的示意图；
图4为本申请实施例提供的触控笔与无线键盘的装配示意图；
图5A为本申请实施例提供的触控笔收纳在无线键盘的收纳部中的示意图；
图5B为本申请实施例提供的触控笔收纳在无线键盘的收纳部时的侧面示意图；
图6为本申请实施例提供的一种触控笔的硬件结构示意图；
图7为本申请实施例提供的一种电子设备的硬件结构示意图；
图8为本申请实施例提供的一种无线键盘的硬件结构示意图；
图9为可能的设计中的无线充电链路示意图；
图10为可能的设计中的RX芯片硬件结构示意图；
图11为可能的设计中的charger芯片硬件结构示意图；
图12为本申请实施例提供的一种芯片的硬件结构示意图；
图13为本申请实施例提供的一种芯片的具体的硬件结构示意图；
图14为本申请实施例提供的一种芯片的具体的硬件结构示意图；
图15为本申请实施例提供的一种芯片的具体的硬件结构示意图；
图16为本申请实施例提供的一种无线充电链路示意图。
具体实施方式
本文中的术语“多个”是指两个或两个以上。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系；在公式中，字符“/”，表示前后关联对象是一种“相除”的关系。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。
可以理解的是，在本申请的实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请的实施例的实施过程构成任何限定。
图1为本申请实施例适用的一种场景示意图。参照图1，该场景中包括触控笔(stylus)100、 电子设备200和无线键盘300。图1中以电子设备200为平板电脑(tablet)为例进行说明。触控笔100和无线键盘300可以向电子设备200提供输入，电子设备200基于触控笔100或无线键盘300的输入，执行响应于该输入的操作。无线键盘300上可以设置触控区域，触控笔100可以操作无线键盘300的触控区域，向无线键盘300提供输入，无线键盘300可以基于触控笔100的输入执行响应于该输入的操作。在一种实施例中，触控笔100和电子设备200之间、触控笔100和无线键盘300之间，以及电子设备200和无线键盘300之间，可以通过通信网络进行互联，以实现无线信号的交互。该通信网络可以但不限于为：WI-FI热点网络、WI-FI点对点(peer-to-peer，P2P)网络、蓝牙网络、zigbee网络或近场通信(near field communication，NFC)网络等近距离通信网络。
触控笔100可以但不限于为：电感笔和电容笔。电子设备200具有触控屏201，触控笔100为电感笔时，与触控笔100交互的电子设备200的触控屏201上需要集成电磁感应板。电磁感应板上的分布有线圈，电感笔中也集成有线圈。基于电磁感应原理，在电磁感应板所产生的磁场范围内，随着电感笔的移动，电感笔能够积蓄电能。电感笔可以将积蓄的电能通过自由震荡，经电感笔中的线圈传输至电磁感应板。电磁感应板可以基于来自电感笔的电能，对电磁感应板上的线圈进行扫描，计算出电感笔在触控屏201上的位置。电子设备200中的触控屏201也可以称为触摸屏，触控笔100也可以称为手写笔。
电容笔可以包括：无源电容笔和有源电容笔。无源电容笔可以称为被动式电容笔，有源电容笔可以称为主动式电容笔。
主动式电容笔中(例如笔尖内)可以设置一个或多个电极，主动式电容笔可以通过电极发射信号。触控笔100为主动式电容笔时，与触控笔100交互的电子设备200的触控屏201上需要集成电极阵列。在一种实施例中，电极阵列可以为电容式电极阵列。电子设备200通过电极阵列可以接收来自主动式电容笔的信号，进而在接收到该信号时，基于触控屏201上的电容值的变化识别主动式电容笔在触控屏上的位置，以及主动式电容笔的倾角。
图2A为本申请实施例提供的触控笔的结构示意图。参照图2A所示，触控笔100可以包括笔尖10、笔杆20和后盖30。笔杆20的内部为中空结构，笔尖10和后盖30分别位于笔杆20的两端，后盖30与笔杆20之间可以通过插接或者卡合方式，笔尖10与笔杆20之间的配合关系详见图2B的描述。
图2B为本申请实施例提供的触控笔的部分拆分结构示意图。参照图2B所示，触控笔100还包括主轴组件50，主轴组件50位于笔杆20内，且主轴组件50在笔杆20内可滑动设置。主轴组件50上具有外螺纹51，笔尖10包括书写端11和连接端12，其中，笔尖10的连接端12具有与外螺纹51配合的内螺纹(未示出)。
当主轴组件50装配到笔杆20内时，笔尖10的连接端12伸入笔杆20内且与主轴组件50的外螺纹51螺纹连接。在一些其他示例中，笔尖10的连接端12与主轴组件50之间还可以通过卡合等可拆卸方式实现连接。通过笔尖10的连接端12与主轴组件50之间可拆卸相连，这样实现了对笔尖10的更换。
其中，为了对笔尖10的书写端11受到的压力进行检测，参照图2A所示，笔尖10与笔杆20之间具有间隙10a，这样可以确保笔尖10的书写端11受到外力时，笔尖10可以朝向笔杆20移动，笔尖10的移动会带动主轴组件50在笔杆20内移动。而对外力的检测，参照图2B所示，在主轴组件50上设有压感组件60，压感组件60的部分与笔杆20内的固定结构固定相连，压感组件60的部分与主轴组件50固定相连。这样，主轴组件50随着笔尖10移动时，由于压感组件60的部分与笔杆20内的固定结构固定相连，所以主轴组件50的移动会驱动压感组件60形变，压感组 件60的形变传递给电路板70(例如，压感组件60与电路板70之间可以通过导线或者柔性电路板实现电连接)，电路板70根据压感组件60形变检测出笔尖10的书写端11的压力，从而根据笔尖10书写端11的压力控制书写端11的线条粗细。
需要说明的是，笔尖10的压力检测包括但不限于上述方法。例如，还可以通过在笔尖10的书写端11内设置压力传感器，由压力传感器检测笔尖10的压力。
本实施例中，参照图2B所示，触控笔100还包括多个电极，多个电极例如可以为第一发射电极41、接地电极43和第二发射电极42。第一发射电极41、接地电极43和第二发射电极42均与电路板70电连接。第一发射电极41可以位于笔尖10内且靠近书写端11，电路板70可以被配置为可以分别向第一发射电极41和第二发射电极42提供信号的控制板，第一发射电极41用于发射第一信号，当第一发射电极41靠近电子设备200的触控屏201时，第一发射电极41与电子设备200的触控屏201之间可以形成耦合电容，这样电子设备200可以接收到第一信号。其中，第二发射电极42用于发射第二信号，电子设备200根据接收到的第二信号可以判断触控笔100的倾斜角度。本申请实施例中，第二发射电极42可以位于笔杆20的内壁上。在一种示例中，第二发射电极42也可以位于主轴组件50上。
接地电极43可以位于第一发射电极41和第二发射电极42之间，或者，接地电极43可以位于第一发射电极41和第二发射电极42的外周围，接地电极43用于降低第一发射电极41和第二发射电极42相互之间的耦合。
当电子设备200接收来自触控笔100的第一信号时，触控屏201对应位置处的电容值会发生变化。据此，电子设备200可以基于触控屏201上的电容值的变化，确定触控笔100(或触控笔100的笔尖)在触控屏201上的位置。另外，电子设备200可以采用倾角检测算法中的双笔尖投影方法获取触控笔100的倾斜角度。其中，第一发射电极41和第二发射电极42在触控笔100中的位置不同，因此当电子设备200接收来自触控笔100的第一信号和第二信号时，触控屏201上两个位置处的电容值会发生变化。电子设备200可以根据第一发射电极41和第二发射电极42之间的距离，以及触控屏201上电容值发生变化的两个位置处之间的距离，获取触控笔100的倾斜角度，更为详细的获取触控笔100的倾斜角度可以参照现有技术中双笔尖投影方法的相关描述。
本申请实施例中，参照图2B所示，触控笔100还包括：电池组件80，电池组件80用于向电路板70提供电源。其中，电池组件80可以包括锂离子电池，或者，电池组件80可以包括镍铬电池、碱性电池或镍氢电池等。在一种实施例中，电池组件80包括的电池可以为可充电电池或一次性电池，其中，当电池组件80包括的电池为可充电电池时，触控笔100可以通过无线充电方式对电池组件80中的电池进行充电。
其中，触控笔100为主动式电容笔时，参照图3，电子设备200和触控笔100无线连接后，电子设备200可以通过触控屏201上集成的电极阵列向触控笔100发送上行信号。触控笔100可以通过接收电极接收该上行信号，且触控笔100通过发射电极(例如第一发射电极41和第二发射电极42)发射下行信号。下行信号包括上述的第一信号和第二信号。当触控笔100的笔尖10接触触控屏201时，触控屏201对应位置处的电容值会发生变化，电子设备200可以基于触控屏201上的电容值，确定触控笔100的笔尖10在触控屏201上的位置。在一种实施例中，上行信号和下行信号可以为方波信号。
在一种实施例中，参照图4所示，无线键盘300可以包括第一部分301和第二部分302。示例性的，如无线键盘300可以包括：键盘主体和键盘套。第一部分301可以为键盘套，第二部分302为键盘主体。第一部分301用于放置电子设备200，第二部分302上可以设置有用于用户 操作的按键、触控板等。
其中，无线键盘300使用时，需要将无线键盘300的第一部分301和第二部分302打开，而无线键盘300不使用时，无线键盘300的第一部分301和第二部分302能够合上。在一种实施例中，无线键盘300的第一部分301与第二部分302之间可以转动相连。例如，第一部分301与第二部分302之间可以通过转轴或者铰链相连，或者，在一些示例中，第一部分301与第二部分302之间通过柔性材料(例如皮质材料或布材料)实现转动相连。或者，在一些示例中，第一部分301与第二部分302可以一体成型，且第一部分301与第二部分302之间的连接处通过减薄处理，使得第一部分301与第二部分302之间的连接处可以弯折。其中，第一部分301和第二部分302之间的连接方式可以包括但不限于上述的几种转动连接方式。
其中，第一部分301可以包括至少两个转动相连的支架。例如，参照图4所示，第一部分301包括第一支架301a和第二支架301b，第一支架301a和第二支架301b之间转动相连，在使用时，可以采用第一支架301a和第二支架301b共同对电子设备200进行支撑(参照图1)。或者，第一支架301a对第二支架301b提供支撑，第二支架301b对电子设备200进行支撑。参照图4所示，第二支架301b与第二部分302之间转动相连。
其中，参照图4所示，为了便于对触控笔100进行收纳，无线键盘300上可以设置有收纳触控笔100的收纳部303。参照图4所示，收纳部303为筒状的腔体，收纳时，触控笔100沿着图4中的箭头方向插入收纳腔体中。本实施例中，参照图4所示，第二部分302和第二支架301b之间通过连接部304转动连接，连接部304中设置有收纳部303。其中，连接部304可以为转轴。
图5A为本申请实施例提供的触控笔收纳在无线键盘的收纳部中的示意图，图5B为本申请实施例提供的触控笔收纳在无线键盘的收纳部时的侧面示意图。参照图5B所示，收纳部303为圆形腔体，且收纳部303的内径大于触控笔100的外径。
其中，为了避免触控笔100放置于收纳部303中掉落，在一种实施例中，收纳部303的内壁上可以设置有磁性材料，触控笔100中可以设置磁性材料。触控笔100通过磁性材料之间的磁性吸附作用吸附在收纳部303内。当然，在一些示例中，触控笔100与收纳部303之间固定时，包括但不限于采用磁力吸附实现固定，例如，触控笔100与收纳部303之间还可以通过卡合方式实现固定。
其中，为了方便触控笔100从收纳部303中取出，收纳部303内可以设置弹出结构，例如，按压触控笔100的一端，弹出机构可以驱动触控笔100的一端从收纳部303向外弹出。
图6为本申请实施例提供的一种触控笔的硬件结构示意图。参照图6所示，触控笔100可以具有处理器110。处理器110可以包括用于支持触控笔100的操作的存储和处理电路。存储和处理电路可以包括诸如非易失性存储器的存储装置(例如，闪存存储器或构造为固态驱动器的其它电可编程只读存储器)、易失性存储器(例如，静态或动态随机存取存储器)等。处理器110中的处理电路可以用来控制触控笔100的操作。处理电路可以基于一个或多个微处理器、微控制器、数字信号处理器、基带处理器、电源管理单元、音频芯片、专用集成电路等。
触控笔100中可以包括一个或多个传感器。例如，传感器可以包括压力传感器120。压力传感器120可以设置在触控笔100的书写端11(如图2B所示)。当然，压力传感器120还可以设在触控笔100的笔杆20内，这样，触控笔100的笔尖10一端受力后，笔尖10的另一端移动将力作用到压力传感器120。在一种实施例中，处理器110根据压力传感器120检测到的压力大小可以调整触控笔100的笔尖10书写时的线条粗细。
传感器也可以包括惯性传感器130。惯性传感器130可以包括三轴加速计和三轴陀螺仪， 和/或，用于测量触控笔100的运动的其它部件，例如，三-轴磁力计可以以九-轴惯性传感器的构造被包括在传感器中。传感器也可以包括附加的传感器，诸如温度传感器、环境光传感器、基于光的接近传感器、接触传感器、磁传感器、压力传感器和/或其它传感器。
触控笔100中可以包括如发光二极管的状态指示器140和按钮150。状态指示器140用于向用户提示触控笔100的状态。按钮150可以包括机械按钮和非机械按钮，按钮150可以用于从用户收集按钮按压信息。
本申请实施例中，触控笔100中可以包括一个或多个电极160(具体可以参照图2B中的描述)，其中一个电极160可以位于触控笔100的书写端处，其中一个电极160可以位于笔尖10内，可以参照上述的相关描述。
触控笔100中可以包括感测电路170。感测电路170可感测位于电极160和与触控笔100交互的电容触摸传感器面板的驱动线之间的电容耦合。感测电路170可以包括用以接收来自电容触摸传感器面板的电容读数的放大器、用以生成解调信号的时钟、用以生成相移的解调信号的相移器、用以使用同相解调频率分量来解调电容读数的混频器、以及用以使用正交解调频率分量来解调电容读数的混频器等。混频器解调的结果可用于确定与电容成比例的振幅，使得触控笔100可以感测到与电容触摸传感器面板的接触。
可以理解的是，根据实际需求，在触控笔100可以包括麦克风、扬声器、音频发生器、振动器、相机、数据端口以及其它设备。用户可以通过利用这些设备提供命令来控制触控笔100和与触控笔100交互的电子设备200的操作，并且接收状态信息和其它输出。
处理器110可以用于运行触控笔100上的控制触控笔100的操作的软件。触控笔100的操作过程中，运行在处理器110上的软件可以处理传感器输入、按钮输入和来自其它装置的输入以监视触控笔100的移动和其它用户输入。在处理器110上运行的软件可以检测用户命令并且可以与电子设备200通信。
为了支持触控笔100与电子设备200的无线通信，触控笔100可以包括无线模块。图6中以无线模块为蓝牙模块180为例进行说明。无线模块还可以为WI-FI热点模块、WI-FI点对点模块等。蓝牙模块180可以包括射频收发器，例如收发器。蓝牙模块180也可以包括一个或多个天线。收发器可以利用天线发射和/或接收无线信号，无线信号基于无线模块的类型，可以是蓝牙信号、无线局域网信号、诸如蜂窝电话信号的远程信号、近场通信信号或其它无线信号。
触控笔100还可以包括充电模块190，充电模块190可以支持触控笔100的充电，为触控笔100提供电力。
应理解，本申请实施例中的电子设备200可以称为用户设备(user equipment，UE)、终端(terminal)等，例如，电子设备200可以为平板电脑(portable android device，PAD)、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备、车载设备或可穿戴设备，虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等具有触控屏的移动终端或固定终端。本申请实施例中对终端设备的形态不做具体限定。
图7为本申请实施例提供的一种电子设备的硬件结构示意图。参照图7，电子设备200可以包括多个子系统，这些子系统协作以执行、协调或监控电子设备202的一个或多个操作 或功能。电子设备200包括处理器210、输入表面220、协调引擎230、电源子系统240、电源连接器250、无线接口260和显示器270。
示例性的，协调引擎230可以用于与电子设备200的其他子系统进行通信和/或处理数据；与触控笔100通信和/或交易数据；测量和/或获得一个或多个模拟或数字传感器(诸如触摸传感器)的输出；测量和/或获得传感器节点阵列(诸如电容感测节点的阵列)的一个或多个传感器节点的输出；接收和定位来自触控笔100的尖端信号和环信号；基于尖端信号交叉区域和环形信号交叉区域的位置来定位触控笔100等。
电子设备200的协调引擎230包括或以其他方式可通信地耦接至位于输入表面220下方或与该输入表面集成一体的传感器层。协调引擎230利用传感器层对输入表面220上的触控笔100进行定位，并使用本文所述的技术来估计触控笔100相对于输入表面220的平面的角位置。在一种实施例中，输入表面220可以称为触控屏201。
例如，电子设备200的协调引擎230的传感器层是布置为列和行的电容感测节点网格。更具体地说，列迹线阵列被设置成垂直于行迹线阵列。传感器层可以与电子设备的其他层分开，或者传感器层可以直接设置在另一个层上，其他层诸如但不限于：显示器叠堆层、力传感器层、数字转换器层、偏光器层、电池层、结构性或装饰性外壳层等。
传感器层能够以多种模式操作。如果以互电容模式操作，则列迹线和行迹线在每个重叠点(例如，“垂直”互电容)处形成单个电容感测节点。如果以自电容模式操作，则列迹线和行迹线在每个重叠点处形成两个(垂直对齐的)电容感测节点。在另一个实施方案中，如果以互电容模式操作，则相邻的列迹线和/或相邻的行迹线可各自形成单个电容感测节点(例如，“水平”互电容)。如上所述，传感器层可以通过监测在每个电容感测节点处呈现的电容(例如，互电容或自电容)变化来检测触控笔100的笔尖10的存在和/或用户手指的触摸。在许多情况下，协调引擎230可被配置为经由电容耦合来检测通过传感器层从触控笔100接收的尖端信号及环信号。
其中，尖端信号和/或环信号可以包括可被配置为令电子设备200识别触控笔100的特定信息和/或数据。此类信息在本文通常被称为“触笔身份”信息。该信息和/或数据可以由传感器层接收，并由协调引擎230解译、解码和/或解调。
处理器210可以使用触笔身份信息来同时接收来自一支以上的触笔的输入。具体地，协调引擎230可被配置为将由协调引擎230检测到的若干触笔中的每个触笔的位置和/或角位置传输给处理器210。在其他情况下，协调引擎230还可以向处理器210传输与由协调引擎230检测到的多个触笔的相对位置和/或相对角位置有关的信息。例如，协调引擎230可以通知处理器210所检测的第一触控笔位于距离所检测的第二触控笔的位置。
在其他情况下，端信号和/或环信号还可以包括用于令电子设备200识别特定用户的特定信息和/或数据。此类信息在本文通常被称为“用户身份”信息。
协调引擎230可以将用户身份信息(如果检测到和/或可复原的话)转发到处理器210。如果用户身份信息不能从尖端信号和/或环信号中复原，则协调引擎230可以可选地向处理器210指示用户身份信息不可用。处理器210能够以任何合适的方式利用用户身份信息(或不存在该信息的情况)，包括但不限于：接受或拒绝来自特定用户的输入，允许或拒绝访问电子设备的特定功能等。处理器210可以使用用户身份信息来同时接收来自一个以上的用户的输入。
在另外的其他情况下，尖端信号和/或环信号可以包括可被配置为令电子设备200识别用户或触控笔100的设置或偏好的特定信息和/或数据。此类信息在本文通常被称为“触笔设置”信息。
协调引擎230可以将触笔设置信息(如果检测到和/或可复原的话)转发到处理器210。如果触笔设置信息不能从尖端信号和/或环信号中复原，则协调引擎230可以可选地向处理器210指示触笔设置信息不可用。电子设备200能够以任何合适的方式利用触笔设置信息(或不存在该信息的情况)，包括但不限于：将设置应用于电子设备，将设置应用于在电子设备上运行的程序，改变由电子设备的图形程序所呈现的线条粗细、颜色、图案，改变在电子设备上操作的视频游戏的设置等。
一般而言，处理器210可被配置为执行、协调和/或管理电子设备200的功能。此类功能可以包括但不限于：与电子设备200的其他子系统通信和/或交易数据，与触控笔100通信和/或交易数据，通过无线接口进行数据通信和/或交易数据，通过有线接口进行数据通信和/或交易数据，促进通过无线(例如，电感式、谐振式等)或有线接口进行电力交换，接收一个或多个触笔的位置和角位置等。
处理器210可被实现为能够处理、接收或发送数据或指令的任何电子设备。例如，处理器可以是微处理器、中央处理单元、专用集成电路、现场可编程门阵列、数字信号处理器、模拟电路、数字电路或这些设备的组合。处理器可以是单线程或多线程处理器。处理器可以是单核或多核处理器。
在使用期间，处理器210可被配置为访问存储有指令的存储器。该指令可被配置为使处理器执行、协调或监视电子设备200的一个或多个操作或功能。
存储在存储器中的指令可被配置为控制或协调电子设备200的其他部件的操作，该部件诸如但不限于：另一处理器、模拟或数字电路、易失性或非易失性存储器模块、显示器、扬声器、麦克风、旋转输入设备、按钮或其他物理输入设备、生物认证传感器和/或系统、力或触摸输入/输出部件、通信模块(诸如无线接口和/或电源连接器)，和/或触觉或触觉反馈设备。
存储器还可存储可由触笔或处理器使用的电子数据。例如，存储器可以存储电子数据或内容(诸如媒体文件、文档和应用程序)、设备设置和偏好、定时信号和控制信号或者用于各种模块的数据、数据结构或者数据库，与检测尖端信号和/或环信号相关的文件或者配置等等。存储器可被配置为任何类型的存储器。例如，存储器可被实现作为随机存取存储器、只读存储器、闪存存储器、可移动存储器、其他类型的存储元件或此类设备的组合。
电子设备200还包括电源子系统240。电源子系统240可包括电池或其它电源。电源子系统240可被配置为向电子设备200提供电力。电源子系统240还可耦接到电源连接器250。电源连接器250可以是任何合适的连接器或端口，其可被配置为从外部电源接收电力并且/或者被配置为向外部负载提供电力。例如，在一些实施方案中，电源连接器250可以用于对电源子系统240内的电池进行再充电。在另一个实施方案中，电源连接器250可以用于将存储在(或可用于)电源子系统240内的电力传输到触控笔100。
电子设备200还包括无线接口260，以促进电子设备200与触控笔100之间的电子通信。在一个实施方案中，电子设备200可被配置为经由低能量蓝牙通信接口或近场通信接口与触控笔100通信。在其他示例中，通信接口有利于电子设备200与外部通信网络、设备或平台之间的电子通信。
无线接口260(无论是电子设备200与触控笔100之间的通信接口还是另外的通信接口)可被实现为一个或多个无线接口、蓝牙接口、近场通信接口、磁性接口、通用串行总线接口、电感接口、谐振接口，电容耦合接口、Wi-Fi接口、TCP/IP接口、网络通信接口、光学接口、声学接口或任何传统的通信接口。
电子设备200还包括显示器270。显示器270可以位于输入表面220后方，或者可以与 其集成一体。显示器270可以通信地耦接至处理器210。处理器210可以使用显示器270向用户呈现信息。在很多情况下，处理器210使用显示器270来呈现用户可以与之交互的界面。在许多情况下，用户操纵触控笔100与界面进行交互。
对于本领域的技术人员而言将显而易见的是，上文关于电子设备200所呈现的具体细节中的一些细节可为实践特定的所述实施方案或其等同物所不需要的。类似地，其他电子设备可以包括更多数量的子系统、模块、部件等。在适当的情况下，一些子模块可以被实现为软件或硬件。因此，应当理解，上述描述并非旨在穷举或将本公开限制于本文所述的精确形式。相反，对于本领域的普通技术人员而言将显而易见的是，根据上述教导内容，许多修改和变型是可能的。
图8为本申请实施例提供的一种无线键盘的硬件结构示意图。参照图8，该无线键盘300可以包括处理器310，存储器320，充电接口330，充电管理模块340，无线充电线圈350，电池360，无线通信模块370，触控板380，键盘390。
其中，上述处理器310，存储器320，充电接口330，充电管理模块340，电池360，无线通信模块370，触控板380，键盘390等均可以设置在无线键盘300的键盘主体(即如图1所示的第二部分302)上。上述无线充电线圈350可以设置在用于活动连接键盘主体和支架的连接部304(如图4所示)中。可以理解的是，本实施例示意的结构并不构成对无线键盘300的具体限定。在另一些实施例中，无线键盘300可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
其中，存储器320可以用于存储程序代码，如用于为触控笔100无线充电的程序代码等。存储器320中还可以存储有用于唯一标识无线键盘300的蓝牙地址。另外，该存储器320中还可以存储有与无线键盘300之前成功配对过的电子设备的连接数据。例如，该连接数据可以为与该无线键盘300成功配对过的电子设备的蓝牙地址。基于该连接数据，无线键盘300能够与该电子设备自动配对，而不必配置与其之间的连接，如进行合法性验证等。上述蓝牙地址可以为媒体访问控制(media access control，MAC)地址。
处理器310可以用于执行上述应用程序代码，调用相关模块以实现本申请实施例中无线键盘300100的功能。例如，实现无线键盘300有线充电功能，反向无线充电功能，无线通信功能等。处理器310可以包括一个或多个处理单元，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器310中。处理器310具体可以是集成的控制芯片，也可以由包括各种有源和/或无源部件的电路组成，且该电路被配置为执行本申请实施例描述的属于处理器310的功能。其中，无线键盘300的处理器可以是微处理器。
无线通信模块370可以用于支持无线键盘300与其他电子设备之间包括蓝牙(bluetooth，BT)，全球导航卫星系统(global navigation satellite system，GNSS)，无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，调频(frequency modulation，FM)，近距离无线通信技术(near field communication，NFC)，红外技术(infrared，IR)等无线通信的数据交换。
在一些实施例中，该无线通信模块370可以为蓝牙芯片。该无线键盘300可以是蓝牙键盘。无线键盘300可以通过该蓝牙芯片与其他电子设备的蓝牙芯片之间进行配对并建立无线连接，以通过该无线连接实现无线键盘300和其他电子设备之间的无线通信。
另外，无线通信模块370还可以包括天线，无线通信模块370经由天线接收电磁波，将 电磁波信号调频以及滤波处理，将处理后的信号发送到处理器310。无线通信模块370还可以从处理器310接收待发送的信号，对其进行调频，放大，经天线转为电磁波辐射出去。
在一些实施例中，无线键盘300可以支持有线充电。具体的，充电管理模块340可以通过充电接口330接收有线充电器的充电输入。
在另一些实施例中，无线键盘300可以支持正向无线充电。充电管理模块340可以通过无线键盘300的无线充电线圈350接收无线充电输入。具体的，充电管理模块340与无线充电线圈350通过匹配电路连接。无线充电线圈350可以与上述无线充电器的无线充电线圈耦合，感应无线充电器的无线充电线圈350发出的交变电磁场，产生交变电信号。无线充电线圈350产生的交变电信号经过匹配电路传输至充电管理模块340，以便为电池360无线充电。
其中，充电管理模块340为电池360充电的同时，还可以为无线键盘300供电。充电管理模块340接收电池360的输入，为处理器310，存储器320，外部存储器和无线通信模块370等供电。充电管理模块340还可以用于监测电池360的电池容量，电池循环次数，电池健康状态(漏电，阻抗)等参数。在其他一些实施例中，充电管理模块340也可以设置于处理器310中。
在另一些实施例中，无线键盘300可以支持反向无线充电。具体的，充电管理模块340还可以接收充电接口330或者电池360的输入，将充电接口330或者电池360输入的直流电信号转换为交流电信号。该交流电信号经过匹配电路传输至无线充电线圈350。无线充电线圈350接收到该交流电信号可以产生交变电磁场。其他移动终端的无线充电线圈感应该交变电磁场，可以进行无线充电。即无线键盘300还可以为其他移动终端无线充电。在一种实施例中，无线充电线圈350可以设置在无线键盘300的收纳部303中，触控笔100的笔杆20内设置有无线充电线圈，当触控笔100放置在收纳部303中时，无线键盘300可以通过无线充电线圈350，为触控笔100进行充电。
需要说明的是，上述匹配电路可以集成在充电管理模块340中，该匹配电路也可以独立于充电管理模块340，本申请实施例对此不作限制。图8以匹配电路可以集成在充电管理模块340中为例，示出无线键盘300的硬件结构示意图。
充电接口330，可以用于提供无线键盘300与其他电子设备(如该无线键盘300的有线充电器)之间进行充电或通信的有线连接。
上述触控板380中集成有触摸传感器。笔记本电脑可以通过触控板380和键盘390接收用户对笔记本电脑的控制命令。
可以理解的是，本申请实施例示意的结构并不构成对无线键盘300的具体限定。其可以具有比图8示出的更多的或者更少的部件，可以组合两个或更多的部件，或者可以具有不同的部件配置。例如，上述无线键盘300的壳体上还可以设置有用于收纳触控笔100的收纳腔。上述无线充电线圈350设置于上述收纳腔内，用于当触控笔100收纳于上述收纳腔内后，为该触控笔100无线充电。
又例如，在无线键盘300的外表面还可以包括按键、指示灯(可以指示电量、呼入/呼出、配对模式等状态)、显示屏(可以提示用户相关信息)等部件。其中，该按键可以是物理按键或触摸按键(与触摸传感器配合使用)等，用于触发开机、关机、开始充电、停止充电等操作。
示例性的，图9示出了一种可能的无线充电链路示意图。
如图9所示，平板电脑(portable android device，PAD)用于为触控笔充电。PAD中包括：PAD电池、升压(BOOST)芯片、发送(transport，TX)芯片以及线圈。触控笔中包括：线圈、 接收(receive，RX)芯片、充电器(charger)芯片以及电池。
下面对图9中PAD为触控笔充电的原理进行简单介绍：
PAD电池电压输入Boost芯片，Boost芯片将PAD电池电压抬升，抬升后的电压用于为TX芯片供电；此过程电压转换效率为预估η 1。
TX芯片将Boost芯片提供的直流信号，经过逆变，转化为交流信号，推送到线圈，通过线圈发送出去；此过程转换的效率预估为η 2。
PAD的线圈与触控笔的线圈，经过电磁耦合，将能量从PAD传送到触控笔；此传送的过程存在耦合效率，预估效率为η 3。
RX芯片将触控笔的线圈耦合到的交流信号，经过整流、电压变化后输出稳定的直流信号；此过程预估效率为η 4。
RX芯片输出直流信号，直流信号需要经过charger芯片处理后为触控笔的电池充电；此过程预估效率为η 5。
因此，图9所示的PAD给触控笔充电的整个链路效率为：
η 总＝η 1*η 2*η 3*η 4*η 5
根据项目经验，在PAD线圈和触控笔线圈完全正对的前提下，η 总约等于35％左右。链路效率较低，在充电过程中PAD和触控笔发热严重，从而导致充电效率低下。
有鉴于此，为了提升充电速度的同时还能降低温升，本申请实施例提供了无线充电电路，可以优化无线充电链路的总效率，具体的，本申请实施例可以将触控笔的RX芯片和charger芯片设计为一个器件，触控笔中从线圈耦合能量之后，经过该器件后可以直接输出至触控笔的电池，这样可以缩短无线充电链路，提升链路效率，从而可以降低触控笔充电式的温升，提升充电效率。
本申请实施例之所以将RX芯片和charger芯片设计为一个器件，是因为发现RX芯片和charger芯片中存在形同或相似的功能器件。
示例性的，图10示出了一种RX芯片的内部结构示意图。图11示出了一种charger芯片的内部结构示意图。
如图10所示，RX芯片中包括：整流器1001、低压差线性稳压器(low dropout regulator，LDO)1002、微控制单元(micro control unit，MCU)1003和协议编解码单元1004。
整流器1001用于将触控笔中线圈耦合的交流信号整流，得到较为平稳的直流信号，该直流信号作为LDO1002的输入。
LDO1002用于将整流后的直流信号转换为标准的5V(当然也可以为其他任意电压值，本申请实施例不作限定)的电压信号，作为charger芯片的输入信号。
MCU1003用于触控笔中软件代码的执行等，可以由寄存器控制。
协议编解码单元1004，用于与TX芯片通信。其中，协议编解码单元1004可以包括幅移键控(amplitude-shift keying，ASK)调制格式或频移键控(frequency-shift keying，FSK)调制格式等，本申请实施例不作具体限定。
其中，LDO1002通常包括一个场效应管10021，例如场效应管可以包括金属-氧化层半导体场效晶体管(metal-oxide-semiconductor field-effect transistor，MOSFET)。
如图11所示，charger芯片中包括：场效应管1101(后续简称Q1)、场效应管1102(后续简称Q2)，以及用于控制Q1和Q2的控制电路。控制电路可以是硬件实现也可以是软件实现，本申请实施例不作限定。
其中，Q1可以为MOSFET等，用于作为主LDO，将来自RX芯片的输入信号VIN进行稳压后给后级系统供电。
Q2可以为MOSFET等，用于将系统电源与电池隔离开，起到动态路径管理的功能。
对比图10和图11可以发现，RX芯片中LDO的物理实现方式可以为1个MOSFET，charger芯片的物理实现方式可以为两个MOSFET，且charger芯片中前一个MOSFET(Q1)的作用与 LDO的功能相同。因此，本申请实施例中，可以将RX芯片中LDO与charger芯片中的Q1复用，将RX芯片和charger芯片设计为一个器件，这样，该器件不仅可以实现RX芯片和charger芯片的功能，而且可以缩短无线充电链路，提升链路效率，从而可以降低触控笔充电式的温升，提升充电效率。
需要说明的是，可能的实现中，图10中的LDO1002，以及图11中用于实现LDO功能的场效应管1101，也可能替换为升压电路(buck)或开关电容(switched capacitor，SC)放大电路，用于更大功率的充电。其中，buck中可以包括2个MOSFET，SC中可以包括9个MOSFET，本申请实施例不作限定。
示例性的，图12示出了本申请实施例的芯片示意图，该芯片可以实现RX芯片和charger芯片的功能。
如图12所示，该芯片中包括：整流器1201、LDO/Buck/SC charger1202(即上述的用于实现LDO/Buck/SC以及charger芯片功能的部分，可能称为充电器单元)、MCU1203和协议编解码单元1204。
整流器1201用于将触控笔中线圈耦合的交流信号整流，得到较为平稳的直流信号，该直流信号作为LDO/Buck/SC charger1202的输入。
LDO/Buck/SC charger1202用于将整流后的直流信号稳压等，并为电池充电。
MCU1203用于控制无线通信、LDO/Buck/SC charger1202以及协议编解码单元1204等。
协议编解码单元1204，用于与TX芯片通信。其中，协议编解码单元1204可以包括幅移键控(amplitude-shift keying，ASK)调制格式或频移键控(frequency-shift keying，FSK)调制格式等，本申请实施例不作具体限定。
可以理解的是，本申请实施例中，因为将RX芯片和charger芯片设计为一个芯片，不仅可以实现RX芯片和charger芯片的功能，而且可以缩短无线充电链路，提升链路效率，从而可以降低触控笔充电式的温升，提升充电效率。
示例性的，图13-15分别示出了包括LDO charger的芯片、包括Buck charger的芯片以及包括SC charger的芯片的硬件结构示意图。
如图13所示，图12的充电器单元1202可以包括LDO charger12021，LDO charger12021包括：第一场效应管控制模块120210、第一场效应管120211和第二场效应管120212。
其中，第一场效应管120211的栅极端和第二场效应管120212的栅极端分别与第一场效应管控制模块120210连接，第一场效应管120211的源级端与整流器1201的输出端连接，第一场效应管120211的漏级端与第二场效应管120212的源极端连接，第二场效应管120212的漏级端用于向触控笔的电池充电。
第一场效应管控制模块120210用于控制第一场效应管120211的栅极端和第二场效应管120212的栅极端的电压值，以实现对第一场效应管120211和第二场效应管120212的开通和关断的控制。
第一场效应管120211用于将整流器1201输出的电压稳压到触控笔需要的充电电压，第二场效应管120212用于隔离芯片的系统电源与触控笔的电池。
可以理解的是，第一场效应管120211的漏级端也可以用于为其他设备提供电压输出，例如第一场效应管120211的漏级端可以输出Vsys等，本申请实施例不作具体限定。
本申请实施例中，芯片中包括LDO charger12021，LDO charger12021中包含的场效应管的数量较少，结构较为简单。
如图14所示，图12的充电器单元1202可以包括Buck charger12022，Buck charger12022包括：第二场效应管控制模块120220、第三场效应管120221、第四场效应管120222和第五场效应管120223。
其中，第三场效应管120221的栅极端、第四场效应管120222的栅极端和第五场效应管120223的栅极端分别与第二场效应管控制模块120220连接，第三场效应管120221的源级端与整流器1201的输出端连接，第三场效应管120221的漏级端与第四场效应管120222的源极端以及电感L的一端连接，第四场效应管120222的漏级端与第五场效应管120223的源极端以及电感L的另一端连接，第五场效应管120223的漏级端用于向触控笔的电池充电。
第二场效应管控制模块120220用于控制第三场效应管120221的栅极端、第四场效应管120222的栅极端以及第五场效应管120223的栅极端的电压值，以实现对第三场效应管120221、第四场效应管120222以及第五场效应管120223的开通和关断的控制。
第三场效应管120221、第四场效应管120222以及电感L可以实现对VIN的灵活稳定转换，得到触控笔需要的充电电压；第五场效应管120223用于隔离芯片的系统电源与触控笔的电池。
可以理解的是，第四场效应管120222的漏级端也可以用于为其他设备提供电压输出，例如第四场效应管120222的漏级端可以输出Vsys等，本申请实施例不作具体限定。
本申请实施例中，芯片中包括Buck charger12022，Buck charger12022中包含的场效应管的数量相较于LDO charger12021较多，第三场效应管120221、第四场效应管120222以及电感L可以实现对VIN的灵活稳定转换，效率较高。
如图15所示，图12的充电器单元1202可以包括SC charger12023，SC charger12023包括：第三场效应管控制模块120230、第六场效应管120231、第七场效应管120232、第八场效应管120233、第九场效应管120234、第十场效应管120235、第十一场效应管120236、第十二场效应管120237、第十三场效应管120238和第十四场效应管120239。
其中，第六场效应管120231、第七场效应管120232、第八场效应管120233、第九场效应管120234、第十场效应管120235、第十一场效应管120236、第十二场效应管120237、第十三场效应管120238和第十四场效应管120239各自的栅极端分别与第三场效应管控制模块120230连接。
第六场效应管120231的源级端与整流器1201的输出端连接，第六场效应管120231的漏级端与第七场效应管120232的源极端以及第十一场效应管120236的源极端连接，第七场效应管120232的漏级端与第八场效应管120233的源极端以及电容C1的一端连接，第八场效应管120233的漏级端与第九场效应管120234的源极端、第十二场效应管120237的漏极端以及第十三场效应管120238的源极端连接，第九场效应管120234的漏极端与第十场效应管120235的源极端以及电容C1的另一端连接，第十场效应管120235的漏极端与第十四场效应管120239的漏极端均接地；第十一场效应管120236的漏极端与第十二场效应管120237的源极端以及电容C2的一端连接；第十二场效应管120237的漏极端与第十三场效应管120238的源极端连接；第十三场效应管120238的漏极端与第十四场效应管120239的源极端以及电容C2的另一端连接；其中，第八场效应管120233的漏级端与第十二场效应管120237的漏极端连接后用于向触控笔的电池充电。
第六场效应管120231、第七场效应管120232、第八场效应管120233、第九场效应管120234、第十场效应管120235、第十一场效应管120236、第十二场效应管120237、第十三场效应管120238、第十四场效应管120239、电容C1以及电容C2可以实现对VIN的灵活稳定转换，以及隔离芯片的系统电源与触控笔的电池。
需要说明的是，上述图13-15的各个场效应管的源极端和漏极端可以互换，本申请实施例不作限定。
示例性的，对应于图12-15的芯片结构，图16示出了本申请实施例的无线充电链路示意图。
如图16所示，PAD用于为触控笔充电。PAD中包括：PAD电池、升压(BOOST)芯片、发送(transport，TX)芯片以及线圈。触控笔中包括：线圈、芯片1301(用于实现RX和charger功能)以及电池。
下面对图16中PAD为触控笔充电的原理进行简单介绍：
PAD电池电压输入Boost芯片，Boost芯片将PAD电池电压抬升，抬升后的电压用于为TX芯片供电；此过程电压转换效率为预估η 1。
TX芯片将Boost芯片提供的直流信号，经过逆变，转化为交流信号，推送到线圈，通过线圈发送出去；此过程转换的效率预估为η 2。
PAD的线圈与触控笔的线圈，经过电磁耦合，将能量从PAD传送到触控笔；此传送的过程存在耦合效率，预估效率为η 3。
芯片1601将触控笔的线圈耦合到的交流信号，经过整流、电压变化后输出稳定的直流信号，并为触控笔的电池充电；此过程预估效率为η 6。其中，η 6与上述的η 4可以相同也可以不同，本申请实施例不作具体限定。
因此，图16所示的PAD给触控笔充电的整个链路效率为：
η 总＝η 1*η 2*η 3*η 6
可见，相较于图9中的无线充电链路，图16的无线充电链路中减少一个产生效率的环节，因此图16的无线充电链路的链路效率较高，从而可以降低触控笔充电式的温升，提升充电效率。
需要说明的是，本申请实施例的芯片1301可能成为RX芯片或charger芯片等，但是该芯片1601的功能既包括RX功能也包括charger功能，本申请实施例对芯片1601的具体称谓不作限定。
需要说明的是，本申请实施例的PAD可以替换为无线键盘等，则可以基于无线键盘为触控笔等充电。
可以理解的是，本申请实施例的芯片以及无线充电电路也可以应用于其他适用的无线充电场景，本申请实施例对无线充电场景不作具体限定。
以上的实施方式、结构示意图或仿真示意图仅为示意性说明本申请的技术方案，其中的尺寸比例并不构成对该技术方案保护范围的限定，任何在上述实施方式的精神和原则之内所做的修改、等同替换和改进等，均应包含在该技术方案的保护范围之内。

Claims (14)

  1. 一种无线充电系统，其特征在于，包括电子设备和触控笔；
    所述电子设备用于为所述触控笔无线充电；
    所述触控笔包括无线充电电路；
    其中，所述无线充电电路包括：第一线圈、芯片和第一电池；
    所述第一线圈用于与第二线圈耦合得到交流信号；
    所述芯片用于根据所述交流信号为所述第一电池充电；其中，所述充电器单元包括：稳压充电电路、升压充电电路或开关电容充电电路；
    其中，所述芯片包括整流器、充电器单元、微控制单元和协议编解码单元；
    所述整流器，用于将输入的交流信号整流为直流信号；
    所述充电器单元，用于利用来自所述整流器的所述直流信号为所述第一电池充电；
    所述协议编解码单元，用于与发送芯片通信；
    所述微控制单元，用于控制所述充电器单元和所述协议编解码单元。
  2. 根据权利要求1所述的无线充电系统，其特征在于，所述稳压充电电路包括：第一场效应管控制模块、第一场效应管和第二场效应管；
    其中，所述第一场效应管的栅极端和所述第二场效应管的栅极端分别与所述第一场效应管控制模块连接，所述第一场效应管的源级端与所述整流器的输出端连接，所述第一场效应管的漏级端与所述第二场效应管的源极端连接，所述第二场效应管的漏级端用于向所述触控笔的电池充电。
  3. 根据权利要求1所述的无线充电系统，其特征在于，所述稳压充电电路包括：第二场效应管控制模块、第三场效应管、第四场效应管和第五场效应管；
    其中，所述第三场效应管的栅极端、所述第四场效应管的栅极端和所述第五场效应管的栅极端分别与所述第二场效应管控制模块连接，所述第三场效应管的源级端与所述整流器的输出端连接，所述第三场效应管的漏级端与所述第四场效应管的源极端以及电感L的一端连接，所述第四场效应管的漏级端与所述第五场效应管的源极端以及电感L的另一端连接，所述第五场效应管的漏级端用于向所述触控笔的电池充电。
  4. 根据权利要求1所述的无线充电系统，其特征在于，所述稳压充电电路包括：
    第三场效应管控制模块、第六场效应管、第七场效应管、第八场效应管、第九场效应管、第十场效应管、第十一场效应管、第十二场效应管、第十三场效应管和第十四场效应管；
    其中，所述第六场效应管、所述第七场效应管、所述第八场效应管、所述第九场效应管、所述第十场效应管、所述第十一场效应管、所述第十二场效应管、所述第十三场效应管和所述第十四场效应管各自的栅极端分别与所述第三场效应管控制模块连接；
    所述第六场效应管的源级端与所述整流器的输出端连接，所述第六场效应管的漏级端与所述第七场效应管的源极端以及所述第十一场效应管的源极端连接，所述第七场效应管的漏级端与所述第八场效应管的源极端以及电容C1的一端连接，所述第八场效应管的漏级端与所述第九场效应管的源极端、所述第十二场效应管的漏极端以及所述第十三场效应管的源极端连接，所述第九场效应管的漏极端与所述第十场效应管的源极端以及电容C1的另一端连接，所述第十场效应管的漏极端与所述第十四场效应管的漏极端均接地，所述第十一场效应管的漏极端与所述第十二场效应管的源极端以及电容C2的一端连接，所述第十二场效应管的漏极端与所述第十三场效应管的源极端连接；所述第十三场效应管的漏极端与所述第十四场效应 管的源极端以及电容C2的另一端连接，其中，所述第八场效应管的漏级端与所述第十二场效应管的漏极端连接后用于向所述触控笔的电池充电。
  5. 根据权利要求1-4任一项所述的无线充电系统，其特征在于，所述电子设备包括：第二电池、升压芯片、发送芯片以及所述第二线圈；
    所述第二电池用于将电压输入所述升压芯片；
    所述升压芯片用于将所述电压抬升，得到第一直流信号；
    所述发送芯片用于将所述第一直流信号逆变为第一交流信号，并将所述第一交流信号传输到所述第二线圈；
    所述第二线圈用于通过所述第一交流信号与所述第一线圈耦合。
  6. 根据权利要求1-4任一项所述的无线充电系统，其特征在于，所述电子设备为平板电脑或无线键盘。
  7. 一种芯片，其特征在于，包括：整流器、充电器单元、微控制单元和协议编解码单元；
    所述整流器，用于将输入的交流信号整流为直流信号；
    所述充电器单元，用于利用来自所述整流器的所述直流信号为电池充电；其中，所述充电器单元包括：稳压充电电路、升压充电电路或开关电容充电电路；
    所述协议编解码单元，用于与发送芯片通信；
    所述微控制单元，用于控制所述充电器单元和所述协议编解码单元。
  8. 根据权利要求7所述的芯片，其特征在于，所述稳压充电电路包括：第一场效应管控制模块、第一场效应管和第二场效应管；
    其中，所述第一场效应管的栅极端和所述第二场效应管的栅极端分别与所述第一场效应管控制模块连接，所述第一场效应管的源级端与所述整流器的输出端连接，所述第一场效应管的漏级端与所述第二场效应管的源极端连接，所述第二场效应管的漏级端用于向触控笔的电池充电。
  9. 根据权利要求7所述的芯片，其特征在于，所述稳压充电电路包括：第二场效应管控制模块、第三场效应管、第四场效应管和第五场效应管；
    其中，所述第三场效应管的栅极端、所述第四场效应管的栅极端和所述第五场效应管的栅极端分别与所述第二场效应管控制模块连接，所述第三场效应管的源级端与所述整流器的输出端连接，所述第三场效应管的漏级端与所述第四场效应管的源极端以及电感L的一端连接，所述第四场效应管的漏级端与所述第五场效应管的源极端以及电感L的另一端连接，所述第五场效应管的漏级端用于向触控笔的电池充电。
  10. 根据权利要求7所述的芯片，其特征在于，所述稳压充电电路包括：
    第三场效应管控制模块、第六场效应管、第七场效应管、第八场效应管、第九场效应管、第十场效应管、第十一场效应管、第十二场效应管、第十三场效应管和第十四场效应管；
    其中，所述第六场效应管、所述第七场效应管、所述第八场效应管、所述第九场效应管、所述第十场效应管、所述第十一场效应管、所述第十二场效应管、所述第十三场效应管和所述第十四场效应管各自的栅极端分别与所述第三场效应管控制模块连接；
    所述第六场效应管的源级端与所述整流器的输出端连接，所述第六场效应管的漏级端与所述第七场效应管的源极端以及所述第十一场效应管的源极端连接，所述第七场效应管的漏级端与所述第八场效应管的源极端以及电容C1的一端连接，所述第八场效应管的漏级端与所述第九场效应管的源极端、所述第十二场效应管的漏极端以及所述第十三场效应管的源极端连接，所述第九场效应管的漏极端与所述第十场效应管的源极端以及电容C1的另一端连接， 所述第十场效应管的漏极端与所述第十四场效应管的漏极端均接地，所述第十一场效应管的漏极端与所述第十二场效应管的源极端以及电容C2的一端连接，所述第十二场效应管的漏极端与所述第十三场效应管的源极端连接；所述第十三场效应管的漏极端与所述第十四场效应管的源极端以及电容C2的另一端连接，其中，所述第八场效应管的漏级端与所述第十二场效应管的漏极端连接后用于向触控笔的电池充电。
  11. 一种无线充电电路，其特征在于，应用于触控笔，所述无线充电电路包括：第一线圈、芯片和第一电池；
    所述第一线圈用于与第二线圈耦合得到交流信号；
    所述芯片用于根据所述交流信号为所述第一电池充电；
    其中，所述芯片包括整流器、充电器单元、微控制单元和协议编解码单元；
    所述整流器，用于将输入的交流信号整流为直流信号；
    所述充电器单元，用于利用来自所述整流器的所述直流信号为所述第一电池充电；其中，所述充电器单元包括：稳压充电电路、升压充电电路或开关电容充电电路；
    所述协议编解码单元，用于与发送芯片通信；
    所述微控制单元，用于控制所述充电器单元和所述协议编解码单元。
  12. 根据权利要求11所述的无线充电电路，其特征在于，所述稳压充电电路包括：第一场效应管控制模块、第一场效应管和第二场效应管；
    其中，所述第一场效应管的栅极端和所述第二场效应管的栅极端分别与所述第一场效应管控制模块连接，所述第一场效应管的源级端与所述整流器的输出端连接，所述第一场效应管的漏级端与所述第二场效应管的源极端连接，所述第二场效应管的漏级端用于向所述触控笔的电池充电。
  13. 根据权利要求11所述的无线充电电路，其特征在于，所述稳压充电电路包括：第二场效应管控制模块、第三场效应管、第四场效应管和第五场效应管；
    其中，所述第三场效应管的栅极端、所述第四场效应管的栅极端和所述第五场效应管的栅极端分别与所述第二场效应管控制模块连接，所述第三场效应管的源级端与所述整流器的输出端连接，所述第三场效应管的漏级端与所述第四场效应管的源极端以及电感L的一端连接，所述第四场效应管的漏级端与所述第五场效应管的源极端以及电感L的另一端连接，所述第五场效应管的漏级端用于向所述触控笔的电池充电。
  14. 根据权利要求11所述的无线充电电路，其特征在于，所述稳压充电电路包括：
    第三场效应管控制模块、第六场效应管、第七场效应管、第八场效应管、第九场效应管、第十场效应管、第十一场效应管、第十二场效应管、第十三场效应管和第十四场效应管；
    其中，所述第六场效应管、所述第七场效应管、所述第八场效应管、所述第九场效应管、所述第十场效应管、所述第十一场效应管、所述第十二场效应管、所述第十三场效应管和所述第十四场效应管各自的栅极端分别与所述第三场效应管控制模块连接；
    所述第六场效应管的源级端与所述整流器的输出端连接，所述第六场效应管的漏级端与所述第七场效应管的源极端以及所述第十一场效应管的源极端连接，所述第七场效应管的漏级端与所述第八场效应管的源极端以及电容C1的一端连接，所述第八场效应管的漏级端与所述第九场效应管的源极端、所述第十二场效应管的漏极端以及所述第十三场效应管的源极端连接，所述第九场效应管的漏极端与所述第十场效应管的源极端以及电容C1的另一端连接，所述第十场效应管的漏极端与所述第十四场效应管的漏极端均接地，所述第十一场效应管的漏极端与所述第十二场效应管的源极端以及电容C2的一端连接，所述第十二场效应管的漏极 端与所述第十三场效应管的源极端连接；所述第十三场效应管的漏极端与所述第十四场效应管的源极端以及电容C2的另一端连接，其中，所述第八场效应管的漏级端与所述第十二场效应管的漏极端连接后用于向所述触控笔的电池充电。
PCT/CN2022/074400 2021-03-15 2022-01-27 无线充电系统、芯片和无线充电电路 WO2022193852A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22770211.5A EP4123426A4 (en) 2021-03-15 2022-01-27 WIRELESS CHARGING SYSTEM, WIRELESS CHARGING CHIP AND CIRCUIT
US17/998,417 US11995251B2 (en) 2021-03-15 2022-01-27 Wireless charging system, chip, and wireless charging circuit

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202110293428.X 2021-03-15
CN202110293428 2021-03-15
CN202110348557.4 2021-03-31
CN202110348557.4A CN113178900B (zh) 2021-03-15 2021-03-31 无线充电系统、芯片和无线充电电路

Publications (1)

Publication Number Publication Date
WO2022193852A1 true WO2022193852A1 (zh) 2022-09-22

Family

ID=76922827

Family Applications (6)

Application Number Title Priority Date Filing Date
PCT/CN2022/072176 WO2022193816A1 (zh) 2021-03-15 2022-01-14 电子设备组件
PCT/CN2022/072154 WO2022193815A1 (zh) 2021-03-15 2022-01-14 应用于信号同步系统的方法、系统、触控笔和电子设备
PCT/CN2022/072016 WO2022193811A1 (zh) 2021-03-15 2022-01-14 配对方法和配对系统
PCT/CN2022/072153 WO2022193814A1 (zh) 2021-03-15 2022-01-14 笔记生成方法和系统
PCT/CN2022/074400 WO2022193852A1 (zh) 2021-03-15 2022-01-27 无线充电系统、芯片和无线充电电路
PCT/CN2022/075710 WO2022193873A1 (zh) 2021-03-15 2022-02-09 触控笔及电子设备组件

Family Applications Before (4)

Application Number Title Priority Date Filing Date
PCT/CN2022/072176 WO2022193816A1 (zh) 2021-03-15 2022-01-14 电子设备组件
PCT/CN2022/072154 WO2022193815A1 (zh) 2021-03-15 2022-01-14 应用于信号同步系统的方法、系统、触控笔和电子设备
PCT/CN2022/072016 WO2022193811A1 (zh) 2021-03-15 2022-01-14 配对方法和配对系统
PCT/CN2022/072153 WO2022193814A1 (zh) 2021-03-15 2022-01-14 笔记生成方法和系统

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/075710 WO2022193873A1 (zh) 2021-03-15 2022-02-09 触控笔及电子设备组件

Country Status (4)

Country Link
US (6) US20230195244A1 (zh)
EP (6) EP4089518A4 (zh)
CN (16) CN113178900B (zh)
WO (6) WO2022193816A1 (zh)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113178900B (zh) * 2021-03-15 2023-02-17 荣耀终端有限公司 无线充电系统、芯片和无线充电电路
CN115686244A (zh) * 2021-07-28 2023-02-03 北京小米移动软件有限公司 收纳筒、触控笔组件、保护套及平板电脑组件
CN117691764A (zh) * 2021-07-30 2024-03-12 荣耀终端有限公司 一种无线充电系统
CN115686250A (zh) * 2021-07-31 2023-02-03 荣耀终端有限公司 刷新率的切换方法、电子设备和系统
CN113853076A (zh) * 2021-08-16 2021-12-28 深圳微步信息股份有限公司 一种触摸笔装配结构及电子设备
CN115904057A (zh) * 2021-08-17 2023-04-04 华为技术有限公司 一种设备控制方法与电子设备
CN114461092B (zh) * 2021-08-19 2022-10-11 荣耀终端有限公司 一种触控笔的连接方法及电子设备
CN113970971B (zh) * 2021-09-10 2022-10-04 荣耀终端有限公司 基于触控笔的数据处理方法和装置
CN114995590B (zh) * 2021-10-11 2023-04-07 荣耀终端有限公司 支撑装置
CN115993883A (zh) * 2021-10-18 2023-04-21 荣耀终端有限公司 基于主动笔的交互方法与主动笔装置
CN116107469A (zh) * 2021-11-11 2023-05-12 荣耀终端有限公司 功能模式切换方法、电子设备及系统
CN114995665B (zh) * 2021-11-15 2024-04-16 荣耀终端有限公司 触控笔的笔尖寿命提示方法、触控笔及电子设备
CN114356120B (zh) * 2021-11-23 2023-08-25 中国华能集团清洁能源技术研究院有限公司 可变形的触控笔
CN114153770A (zh) * 2021-11-30 2022-03-08 联想(北京)有限公司 一种控制方法及电子设备
CN115016650B (zh) * 2021-12-14 2023-05-23 荣耀终端有限公司 电子设备保护套及电子设备组件
CN114020164B (zh) * 2022-01-05 2022-04-15 北京易真学思教育科技有限公司 触控笔控制方法、装置、电子设备和存储介质
CN115543105B (zh) * 2022-01-11 2023-10-20 荣耀终端有限公司 一种信息传输方法和装置
CN114597987A (zh) * 2022-01-12 2022-06-07 深圳市可信华成通信科技有限公司 一种无线充电式终端保护夹及其无线充电控制系统
US20230232200A1 (en) * 2022-01-14 2023-07-20 Htc Corporation Method for pairing devices, electronic system, and computer readable storage medium
CN115549230B (zh) * 2022-01-25 2023-06-23 荣耀终端有限公司 一种充电控制电路和终端
CN114143765B (zh) * 2022-02-08 2022-07-08 荣耀终端有限公司 蓝牙回连方法、装置和存储介质
CN115562464B (zh) * 2022-02-14 2023-09-12 荣耀终端有限公司 电子设备的激活模式的控制方法、电子设备以及存储介质
CN114661175B (zh) * 2022-03-22 2023-08-18 荣耀终端有限公司 触控笔及电子设备
CN116991257A (zh) * 2022-04-01 2023-11-03 荣耀终端有限公司 数据传输方法、触控笔以及存储介质
CN115543106B (zh) * 2022-04-06 2024-04-19 荣耀终端有限公司 一种手写笔的吸附检测系统
CN115566747B (zh) * 2022-04-06 2023-11-10 荣耀终端有限公司 无线充电系统
CN115602192B (zh) * 2022-04-06 2023-11-14 荣耀终端有限公司 功能配件检测系统
CN117093087A (zh) * 2022-05-13 2023-11-21 华为技术有限公司 一种电子设备的控制方法及电子设备
CN116094081B (zh) * 2022-06-16 2023-11-07 荣耀终端有限公司 一种无线充电系统和无线充电笔盒
CN116048242A (zh) * 2022-06-17 2023-05-02 荣耀终端有限公司 主动笔和主动笔的手势识别方法
CN116088696A (zh) * 2022-07-07 2023-05-09 荣耀终端有限公司 触控笔及电子设备组件
CN115037014A (zh) * 2022-07-12 2022-09-09 Oppo广东移动通信有限公司 充电座、触控笔及触控笔组件
US11862986B1 (en) 2022-07-25 2024-01-02 Avago Technologies International Sales Pte. Limited Rectifier buck with external fet
CN116736990A (zh) * 2022-09-06 2023-09-12 荣耀终端有限公司 触控笔及电子设备组件
CN115909342B (zh) * 2023-01-03 2023-05-23 湖北瑞云智联科技有限公司 基于触点运动轨迹的图像标记识别系统及方法
CN116301411B (zh) * 2023-05-25 2023-08-04 南京湃睿半导体有限公司 压感分级感应装置、压感感应方法及静电容式触控笔
CN117406290B (zh) * 2023-12-15 2024-04-19 荣耀终端有限公司 吸附检测系统及吸附检测方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104793761A (zh) * 2014-01-17 2015-07-22 瑞鼎科技股份有限公司 具有无线充电功能的触控笔及其操作方法
CN205319805U (zh) * 2016-01-20 2016-06-15 京东方科技集团股份有限公司 电容笔、发射终端以及无线充电系统
CN208094236U (zh) * 2018-04-11 2018-11-13 深圳市立健达精密工业有限公司 一种电容笔无线充电盒
CN112104243A (zh) * 2020-11-05 2020-12-18 广东希荻微电子有限公司 降压整流电路、无线充电接收芯片以及无线充电接收器
JP2021027712A (ja) * 2019-08-06 2021-02-22 ローム株式会社 ワイヤレス受電装置のコントロール回路、電子機器
CN113178900A (zh) * 2021-03-15 2021-07-27 荣耀终端有限公司 无线充电系统、芯片和无线充电电路

Family Cites Families (187)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0635592A (ja) * 1992-07-13 1994-02-10 Fujikura Rubber Ltd スタイラスペン
JP2001074006A (ja) * 1999-09-03 2001-03-23 Amitec:Kk ストロークセンサ
JP2006065757A (ja) * 2004-08-30 2006-03-09 Wacom Co Ltd 座標指示器
US7646379B1 (en) * 2005-01-10 2010-01-12 Motion Computing, Inc. Wireless and contactless electronic input stylus having at least one button with optical scan and programmable pointer functionality
US20080150917A1 (en) * 2006-12-20 2008-06-26 3M Innovative Properties Company Oscillator circuit for use in an untethered stylus
US20080149401A1 (en) * 2006-12-20 2008-06-26 3M Innovative Properties Company Untethered stylus employing separate communication channels
US9262409B2 (en) * 2008-08-06 2016-02-16 Abbyy Infopoisk Llc Translation of a selected text fragment of a screen
CN101751160B (zh) * 2008-12-16 2013-06-05 深圳富泰宏精密工业有限公司 触控笔
CN101539816B (zh) * 2009-04-16 2012-10-17 台均科技（深圳）有限公司 电磁笔、电磁信号处理方法、装置及设备
US8654524B2 (en) * 2009-08-17 2014-02-18 Apple Inc. Housing as an I/O device
CN201974769U (zh) * 2010-12-03 2011-09-14 周佳 多功能手写笔及多功能手写系统
US8766954B2 (en) * 2010-12-21 2014-07-01 Motorola Mobility Llc Active stylus for use with touch-sensitive interfaces and corresponding method
CN102622104A (zh) * 2011-01-26 2012-08-01 汉王科技股份有限公司 具有压力感测的电容手写笔
CN202067235U (zh) * 2011-05-11 2011-12-07 汉王制造有限公司 手写电磁笔装置
US8638320B2 (en) * 2011-06-22 2014-01-28 Apple Inc. Stylus orientation detection
KR101154541B1 (ko) * 2011-07-12 2012-06-13 (주)유니글로브에이치엔티 스탠드가 내장된 태블릿 컴퓨터용 무선 키보드
US9256588B1 (en) * 2011-09-28 2016-02-09 Amazon Technologies, Inc. Transferring content to a substantially similar location in a virtual notebook using a stylus enabled device
US8872792B2 (en) * 2011-10-28 2014-10-28 Atmel Corporation Active stylus with energy harvesting
CN102436395A (zh) * 2011-11-22 2012-05-02 宇龙计算机通信科技(深圳)有限公司 一种内容选择复制方法和移动终端
TWI553530B (zh) * 2011-12-05 2016-10-11 緯創資通股份有限公司 觸控裝置、無線觸控系統及其觸控方法
CN103164053B (zh) * 2011-12-08 2016-01-20 东友科技股份有限公司 光学式数字笔及其电源触发机构
CN102566800B (zh) * 2011-12-29 2015-08-12 敦泰科技有限公司 一种触摸笔、触摸检测方法和触摸检测系统
KR101379357B1 (ko) * 2012-02-17 2014-03-28 주식회사 피엔에프 위치 정보 입력이 가능한 키보드 및 이를 포함하는 키보드 시스템
TWI470485B (zh) * 2012-03-29 2015-01-21 Wistron Corp 可偵測筆觸壓力的觸控筆
JP5991735B2 (ja) * 2012-04-13 2016-09-14 株式会社ワコム 位置指示器
CN104285198B (zh) * 2012-04-29 2019-02-15 Jcm电子笔有限责任公司 用于电容式触摸屏的触笔和触笔电路
US9176604B2 (en) * 2012-07-27 2015-11-03 Apple Inc. Stylus device
EP2693310A1 (en) * 2012-07-31 2014-02-05 BlackBerry Limited Method and apparatus pertaining to the timing of stylus location transmissions
US9164599B2 (en) * 2012-08-10 2015-10-20 Adobe Systems Incorporated Multifunctional stylus
KR101973634B1 (ko) * 2012-08-23 2019-04-29 엘지전자 주식회사 이동 단말기 및 그 제어방법
KR102068604B1 (ko) * 2012-08-28 2020-01-22 삼성전자 주식회사 휴대단말기의 문자 인식장치 및 방법
JP5984259B2 (ja) * 2012-09-20 2016-09-06 株式会社ワコム 位置検出装置
CN103838490B (zh) * 2012-11-20 2018-01-23 联想(北京)有限公司 一种信息处理的方法及一种电子设备
CN103870142A (zh) * 2012-12-14 2014-06-18 联想(北京)有限公司 触控笔弹出方法、电子设备、触控笔和容纳装置
US9158393B2 (en) * 2012-12-18 2015-10-13 Logitech Europe S.A. Active stylus for touch sensing applications
US10216402B2 (en) * 2012-12-21 2019-02-26 Nokia Technologies Oy Method and apparatus for related user inputs
CA2838165A1 (en) * 2012-12-31 2014-06-30 Smart Technologies Ulc Method for manipulating tables on an interactive input system and interactive input system executing the method
US9342162B2 (en) * 2013-01-29 2016-05-17 Lg Electronics Inc. Mobile terminal and controlling method thereof
US20140218343A1 (en) * 2013-02-01 2014-08-07 Barnesandnoble.Com Llc Stylus sensitive device with hover over stylus gesture functionality
US9785259B2 (en) * 2013-03-11 2017-10-10 Barnes & Noble College Booksellers, Llc Stylus-based slider functionality for UI control of computing device
US9448643B2 (en) * 2013-03-11 2016-09-20 Barnes & Noble College Booksellers, Llc Stylus sensitive device with stylus angle detection functionality
US20140256250A1 (en) * 2013-03-11 2014-09-11 Barnesandnoble.Com Llc Peer-to-peer data transfer using near field communication (nfc)-enabled styluses
US9766723B2 (en) * 2013-03-11 2017-09-19 Barnes & Noble College Booksellers, Llc Stylus sensitive device with hover over stylus control functionality
US9367161B2 (en) * 2013-03-11 2016-06-14 Barnes & Noble College Booksellers, Llc Touch sensitive device with stylus-based grab and paste functionality
EP2784636A1 (en) * 2013-03-28 2014-10-01 BlackBerry Limited Photodetector-based stylus system
TWI522850B (zh) * 2013-05-10 2016-02-21 和碩聯合科技股份有限公司 多功能觸控筆
US9946366B2 (en) * 2013-06-03 2018-04-17 Apple Inc. Display, touch, and stylus synchronization
KR20140146954A (ko) * 2013-06-18 2014-12-29 삼성전자주식회사 서비스 제공 방법 및 이를 위한 전자 기기
CN103399632B (zh) * 2013-07-16 2018-01-23 深圳市金立通信设备有限公司 一种手势控制的方法和移动终端
US9152254B2 (en) * 2013-11-21 2015-10-06 Atmel Corporation Electrical connection for active-stylus electrode
US10331777B2 (en) * 2013-12-31 2019-06-25 Barnes & Noble College Booksellers, Llc Merging annotations of paginated digital content
CN203720795U (zh) * 2014-02-12 2014-07-16 昆盈企业股份有限公司 主动式触控笔及其笔头结构
CN106104437A (zh) * 2014-03-17 2016-11-09 株式会社和冠 位置检测装置
US9389708B2 (en) * 2014-05-08 2016-07-12 Atmel Corporation Active stylus with force sensor
US9454272B2 (en) * 2014-05-22 2016-09-27 Stmicroelectronics Asia Pacific Pte Ltd Touch screen for stylus emitting wireless signals
CN104063105B (zh) * 2014-06-11 2017-02-15 合肥鑫晟光电科技有限公司 一种触摸装置及触摸驱动方法
CN104049778B (zh) * 2014-06-23 2017-11-03 吴凯锋 主动式电容笔
US9430141B1 (en) * 2014-07-01 2016-08-30 Amazon Technologies, Inc. Adaptive annotations
CN204009786U (zh) * 2014-07-21 2014-12-10 李睿 主动触控笔
WO2016018062A1 (en) * 2014-07-31 2016-02-04 Samsung Electronics Co., Ltd. Method and device for providing content
US9659482B2 (en) * 2014-09-02 2017-05-23 Apple Inc. Context-based alerts for an electronic device
CN204190857U (zh) * 2014-09-05 2015-03-04 东莞理工学院 投影用互动书写笔及屏幕书写系统
US20160070688A1 (en) * 2014-09-05 2016-03-10 Microsoft Corporation Displaying annotations of a document by augmenting the document
US9424048B2 (en) * 2014-09-15 2016-08-23 Microsoft Technology Licensing, Llc Inductive peripheral retention device
US9880649B2 (en) * 2014-09-29 2018-01-30 Apple Inc. Touch, pen and force sensor operation with variable refresh displays
US9400570B2 (en) * 2014-11-14 2016-07-26 Apple Inc. Stylus with inertial sensor
KR102307692B1 (ko) * 2014-11-28 2021-10-05 삼성전자 주식회사 펜 입력장치, 그 입력 좌표 보정방법 및 이를 제공하는 전자장치
EP3230836B1 (en) * 2014-12-09 2018-09-26 Microsoft Technology Licensing, LLC Stylus with a dynamic transmission protocol
US10042439B2 (en) * 2014-12-11 2018-08-07 Microsft Technology Licensing, LLC Interactive stylus and display device
CN104536688A (zh) * 2014-12-26 2015-04-22 北京奇虎科技有限公司 基于触摸操作的搜索方法和装置
JP2016126412A (ja) * 2014-12-26 2016-07-11 レノボ・シンガポール・プライベート・リミテッド 収納構造及び電子機器
US9977519B2 (en) * 2015-02-25 2018-05-22 Synaptics Incorporated Active pen with bidirectional communication
WO2016158418A1 (ja) * 2015-03-31 2016-10-06 株式会社ワコム 電子ペン及び電子ペン本体部
JP2016200860A (ja) * 2015-04-07 2016-12-01 キヤノン株式会社 情報処理装置、情報処理装置の制御方法、およびプログラム
EP3282346B1 (en) * 2015-04-09 2020-09-02 Wacom Co., Ltd. Method using active stylus and sensor controller, system, sensor controller, and active stylus
US9874966B2 (en) * 2015-04-28 2018-01-23 Microsoft Technology Licensing, Llc Electrostatic device having spaced electrodes
CN106208172B (zh) * 2015-04-30 2020-06-16 微软技术许可有限责任公司 移动客户端设备无线充电、通信及认证技术
US9924019B2 (en) * 2015-05-15 2018-03-20 Microsoft Technology Licensing, Llc Automatic device pairing
TWM508060U (zh) * 2015-06-12 2015-09-01 Waltop Int Corp 電容式指標裝置
JP6551915B2 (ja) * 2015-07-06 2019-07-31 シグマセンス，エルエルシー 内圧、傾き及び回転についてのペンシステム
KR20170011507A (ko) 2015-07-23 2017-02-02 삼성전자주식회사 전자 장치 운용 방법 및 이를 지원하는 전자 장치
KR101595902B1 (ko) * 2015-07-28 2016-02-24 채시환 색상 제어가 가능한 터치펜
JP3217279U (ja) * 2015-07-30 2018-08-02 アドニット カンパニー リミテッド 先端およびそれを有するスタイラス
CN106445199A (zh) * 2015-08-13 2017-02-22 天津三星通信技术研究有限公司 触控笔、移动终端以及实现数据的连续应用的方法
US9830003B2 (en) * 2015-08-18 2017-11-28 Microsoft Technology Licensing, Llc Ring button components in electronics
US10025401B2 (en) * 2015-09-08 2018-07-17 Apple Inc. Active stylus ring electrode
US10168804B2 (en) * 2015-09-08 2019-01-01 Apple Inc. Stylus for electronic devices
CN105468174A (zh) * 2015-11-19 2016-04-06 业成光电（深圳）有限公司 多功能主动式触控笔
CN113076018A (zh) * 2015-12-17 2021-07-06 禾瑞亚科技股份有限公司 有线主动触控笔
US20170222456A1 (en) * 2016-01-29 2017-08-03 Google Inc. Charging stylus inside hinge of portable computing device
CN105607766B (zh) * 2016-03-15 2017-12-22 深圳市华鼎星科技有限公司 一种可变电容式压力传感器和真笔迹触控笔
KR102440965B1 (ko) * 2016-03-28 2022-09-07 삼성전자주식회사 스타일러스 펜, 스타일러스 펜으로부터 신호를 입력받는 전자 장치 및 이의 제어 방법
CN205594600U (zh) * 2016-04-22 2016-09-21 立迈科技股份有限公司 主动式压感电容触控笔
CN105867711B (zh) * 2016-04-28 2019-04-09 深圳市华鼎星科技有限公司 一种真笔迹触控笔和触控装置
CN107368203B (zh) * 2016-05-13 2020-04-24 群光电子股份有限公司 触控笔装置
CN105975103B (zh) * 2016-05-22 2018-11-06 重庆工业职业技术学院 一种带激光教鞭的多功能指环式无线鼠标
US9939930B2 (en) * 2016-06-09 2018-04-10 Atmel Corporation Active stylus with multiple sensors for receiving signals from a touch sensor
CN107526453B (zh) * 2016-06-20 2020-06-05 群光电子股份有限公司 触控笔
CN106201026B (zh) * 2016-06-29 2021-09-14 联想(北京)有限公司 控制方法、第一电子设备及第二电子设备
CN206021625U (zh) * 2016-07-13 2017-03-15 陈育林 无线充电点读笔
US10025403B2 (en) * 2016-07-25 2018-07-17 Microsoft Technology Licensing, Llc Stylus communication channels
CN108139856B (zh) * 2016-08-31 2020-07-07 华为技术有限公司 签名认证方法、终端、手写笔及系统
CN109643171B (zh) * 2016-09-01 2022-10-04 株式会社和冠 触控笔、传感器控制器及电子尺
DK179278B1 (en) * 2016-09-06 2018-03-26 Apple Inc Devices, methods and graphical user interfaces for haptic mixing
CN206470707U (zh) * 2016-09-07 2017-09-05 广东虹勤通讯技术有限公司 一种触控笔
CN114675774A (zh) * 2016-09-23 2022-06-28 苹果公司 用于对文本进行注释的设备、方法和图形用户界面
CN206178720U (zh) * 2016-09-29 2017-05-17 深圳市汇顶科技股份有限公司 触控手写笔
TWI636383B (zh) * 2016-10-17 2018-09-21 禾瑞亞科技股份有限公司 觸控筆與其筆尖結構
US10168799B2 (en) * 2016-10-17 2019-01-01 Uneo Inc. Hybrid digital analog key switch
TWI599919B (zh) * 2016-10-28 2017-09-21 翰碩電子股份有限公司 具有雙發射電極之電容筆
US10310636B2 (en) * 2016-11-04 2019-06-04 Microsoft Technology Licensing, Llc Active stylus
CN106775377B (zh) * 2016-11-23 2020-12-18 北京小米移动软件有限公司 手势识别装置、设备及手势识别装置的控制方法
CN106775020A (zh) * 2016-12-26 2017-05-31 汉王科技股份有限公司 电容笔
JP6952472B2 (ja) * 2017-02-06 2021-10-20 エルジー ディスプレイ カンパニー リミテッド 傾き導出装置及び傾き導出方法
US10185415B2 (en) 2017-02-24 2019-01-22 Microsoft Technology Licensing, Llc Configurable communication protocol for communication between a stylus device and a host device
WO2018170871A1 (zh) * 2017-03-24 2018-09-27 深圳市汇顶科技股份有限公司 一种电容笔系统、电容笔及电容笔控制电路
CN107135179B (zh) * 2017-04-10 2020-01-14 京信通信系统（中国）有限公司 一种设备频率校准方法及设备
TWI653555B (zh) * 2017-04-26 2019-03-11 禾瑞亞科技股份有限公司 觸控筆與其電子系統
CN108803900B (zh) * 2017-04-26 2021-11-02 禾瑞亚科技股份有限公司 触控笔与其电子系统
KR101976361B1 (ko) * 2017-05-23 2019-05-08 마크앤드로우 주식회사 스타일러스펜 용 무선충전구조
US10671844B2 (en) * 2017-06-02 2020-06-02 Apple Inc. Handwritten text recognition
CN110770681B (zh) * 2017-07-06 2023-08-29 株式会社和冠 电子笔
CN109308173B (zh) * 2017-07-26 2021-10-15 腾讯科技（深圳）有限公司 显示方法及装置、显示终端及计算机存储介质
TWI648660B (zh) * 2017-07-31 2019-01-21 Waltop International Corporation 可提供傾斜角與方位角偵測訊號的電容筆
US10664012B1 (en) * 2017-08-04 2020-05-26 Apple Inc. Accessories for portable electronic devices
CN207067941U (zh) * 2017-08-21 2018-03-02 深圳市恒怡多精彩科技有限公司 带有充电笔套的皮套键盘
KR102457894B1 (ko) * 2017-08-22 2022-10-25 삼성전자주식회사 디스플레이에 표시된 텍스트를 번역하는 방법 및 장치
WO2019049452A1 (ja) * 2017-09-05 2019-03-14 株式会社ワコム 電子ペン及び電子ペン用のカートリッジ
US10642385B1 (en) * 2017-09-15 2020-05-05 Apple Inc. Touch input device and keyboard device for electronic devices
CN207281719U (zh) * 2017-09-28 2018-04-27 深圳传音制造有限公司 一种触控组件及具有该触控组件的智能终端
CN108008847B (zh) * 2017-12-26 2024-02-13 汉王科技股份有限公司 主动式电容笔及其压力传感器
US10496192B2 (en) * 2018-02-27 2019-12-03 Apple Inc. Computer stylus having integrated antenna and sensor structures
US10678348B2 (en) * 2018-03-12 2020-06-09 Microsoft Technology Licensing, Llc Touch detection on an ungrounded pen enabled device
CN108649672A (zh) 2018-04-26 2018-10-12 Oppo广东移动通信有限公司 无线充电电路及可穿戴设备
US20190369754A1 (en) * 2018-06-01 2019-12-05 Apple Inc. Devices, methods, and graphical user interfaces for an electronic device interacting with a stylus
KR102488305B1 (ko) * 2018-06-11 2023-01-13 삼성전자주식회사 입력 장치 및 그를 포함하는 전자 장치
KR102503417B1 (ko) * 2018-07-31 2023-02-24 삼성전자주식회사 스타일러스 펜을 이용한 입력을 처리하는 방법 및 그 전자 장치
CN110794977B (zh) * 2018-08-03 2023-06-30 矽统科技股份有限公司 双向主动式触控笔及感测系统
KR102477853B1 (ko) * 2018-08-06 2022-12-15 삼성전자주식회사 디스플레이를 통해 외부 장치의 배터리의 충전을 제공하기 위해 어포던스를 표시하는 전자 장치 및 방법
KR102262165B1 (ko) * 2018-08-08 2021-06-09 삼성전자주식회사 입력 장치와의 통신 연결을 제어하는 전자 장치 및 그 제어 방법
EP3637231B1 (en) * 2018-08-13 2023-05-10 Shenzhen Goodix Technology Co., Ltd. Signal transmitting method, signal receiving method and device
CN109190101B (zh) * 2018-08-29 2023-06-27 北京字节跳动网络技术有限公司 阅读笔记生成方法、装置和电子设备
US10921854B2 (en) * 2018-09-06 2021-02-16 Apple Inc. Electronic device with sensing strip
KR102498813B1 (ko) * 2018-09-28 2023-02-13 삼성전자주식회사 스타일러스 펜과 페어링하기 위한 전자 장치 및 그에 관한 방법
US11899879B2 (en) * 2018-09-30 2024-02-13 Huawei Technologies Co., Ltd. Stylus detection method, system, and related apparatus for switching frequencies for detecting input signals
CN208873125U (zh) 2018-11-30 2019-05-17 东莞市乐鑫光电科技有限公司 一种触控笔
KR102595142B1 (ko) * 2018-12-20 2023-10-27 엘지디스플레이 주식회사 액티브펜 및 터치표시장치
CN109683733B (zh) * 2019-01-02 2021-01-26 京东方科技集团股份有限公司 触控笔、触控面板、显示装置及触控感测方法
CN109613996B (zh) * 2019-01-16 2024-06-18 北京汉王鹏泰科技股份有限公司 多模式触控笔及触控系统
CN109917932A (zh) * 2019-02-03 2019-06-21 广州视源电子科技股份有限公司 交互智能设备的控制方法、装置和电磁屏的控制系统
CN110007784B (zh) * 2019-02-28 2020-07-24 华为技术有限公司 一种主动式触控笔校准方法、主动式触控笔及电子设备
US10739909B1 (en) * 2019-04-03 2020-08-11 Himax Technologies Limited Position input system and method
WO2020213277A1 (ja) * 2019-04-17 2020-10-22 株式会社ワコム インクアノテーション共有方法及びシステム
CN110045880A (zh) * 2019-05-21 2019-07-23 深圳腾千里科技有限公司 一种书写装置
CN112135212A (zh) * 2019-06-25 2020-12-25 上海宽翼通信科技股份有限公司 充电盒和适配该充电盒的tws蓝牙耳机、及其组件
CN209842573U (zh) * 2019-06-28 2019-12-24 深圳市台冠科技有限公司 一种高强度防跌防震主动式电容笔
CN110446194B (zh) * 2019-07-02 2023-05-23 广州视睿电子科技有限公司 智能笔控制方法及智能笔
CN110515528A (zh) * 2019-07-18 2019-11-29 同辉佳视（北京）信息技术股份有限公司 触控笔交互方法、触控屏控制方法和触控屏
CN209895309U (zh) * 2019-07-19 2020-01-03 东莞市微技电子科技有限公司 一种蓝牙键盘
KR20210014397A (ko) * 2019-07-30 2021-02-09 삼성전자주식회사 스타일러스 펜에 의한 제스처를 확인하는 전자 장치 및 그 동작 방법
KR20210014401A (ko) * 2019-07-30 2021-02-09 삼성전자주식회사 스타일러스 펜에 의한 제스처를 확인하는 전자 장치 및 그 동작 방법
US11368038B2 (en) * 2019-08-06 2022-06-21 Microsoft Technology Licensing, Llc Adaptive wireless charging receiver loading
KR20210016900A (ko) 2019-08-06 2021-02-17 삼성전자주식회사 스타일러스 펜 및 스타일러스 펜을 인식하는 전자 장치 및 그 동작 방법
CN112346582B (zh) * 2019-08-08 2022-07-22 华为技术有限公司 一种触控笔以及电子设备
CN110471546B (zh) * 2019-08-21 2023-06-20 京东方科技集团股份有限公司 一种触控笔、触控面板、触控系统和触控方法
CN110609627A (zh) * 2019-09-26 2019-12-24 京东方科技集团股份有限公司 一种触控笔、触控面板、触控系统和触控方法
CN110636403A (zh) * 2019-10-25 2019-12-31 深圳市科奈信科技有限公司 一种无线耳机的配对方法、系统和存储介质
US11113449B2 (en) * 2019-11-10 2021-09-07 ExactNote, Inc. Methods and systems for creating, organizing, and viewing annotations of documents within web browsers
CN110908582A (zh) * 2019-11-26 2020-03-24 维沃移动通信有限公司 一种控制方法、触控笔及电子组件
CN111225346B (zh) * 2019-11-28 2022-07-12 深圳传音控股股份有限公司 无线耳机的连接切换方法、无线耳机及存储介质
CN110780758A (zh) * 2019-12-06 2020-02-11 北京科加触控技术有限公司 一种笔头及电容笔
CN111158508B (zh) * 2019-12-11 2021-06-15 华为技术有限公司 手写笔及终端设备
CN210691275U (zh) * 2019-12-30 2020-06-05 深圳市千分一智能技术有限公司 触控笔
WO2021150036A1 (ko) * 2020-01-22 2021-07-29 주식회사 하이딥 스타일러스 펜, 안테나 모듈, 터치 센서, 및 전자 디바이스
CN111837095A (zh) * 2020-03-17 2020-10-27 深圳市汇顶科技股份有限公司 主动笔
CN211787016U (zh) * 2020-03-31 2020-10-27 深圳市汇顶科技股份有限公司 主动笔
CN111459313B (zh) * 2020-03-31 2022-03-29 维沃移动通信有限公司 对象控制方法、触控笔及电子设备
CN212112420U (zh) * 2020-04-21 2020-12-08 深圳市欣智旺电子有限公司 笔尖压感结构及电子笔
CN111665984A (zh) * 2020-05-29 2020-09-15 维沃移动通信有限公司 一种信息处理方法及装置、电子设备及可读存储介质
CN111813299A (zh) * 2020-05-29 2020-10-23 维沃移动通信有限公司 信息分享方法、信息分享装置和电子设备
CN212661307U (zh) * 2020-06-03 2021-03-09 广州爱拓电子产品有限公司 一种iPad及iPad键盘保护套
CN111813246B (zh) * 2020-06-19 2022-01-28 维沃移动通信有限公司 电子设备
KR20220009150A (ko) * 2020-07-15 2022-01-24 주식회사 엘엑스세미콘 액티브 펜의 위상에러를 보상하는 터치센싱장치 및 액티브 펜의 위상에러 보상방법
CN111949146A (zh) * 2020-08-13 2020-11-17 深圳传音控股股份有限公司 触控笔的快捷功能调用方法、装置、触控笔及存储介质
CN112214118B (zh) * 2020-10-15 2024-01-26 维沃移动通信有限公司 触控笔及其控制方法、电子设备
US11995129B2 (en) * 2021-02-16 2024-05-28 Radical Hq Limited System and method for annotating website content
CN112698733B (zh) * 2021-03-24 2021-07-13 深圳市智信新信息技术有限公司 一种无线键盘

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104793761A (zh) * 2014-01-17 2015-07-22 瑞鼎科技股份有限公司 具有无线充电功能的触控笔及其操作方法
CN205319805U (zh) * 2016-01-20 2016-06-15 京东方科技集团股份有限公司 电容笔、发射终端以及无线充电系统
CN208094236U (zh) * 2018-04-11 2018-11-13 深圳市立健达精密工业有限公司 一种电容笔无线充电盒
JP2021027712A (ja) * 2019-08-06 2021-02-22 ローム株式会社 ワイヤレス受電装置のコントロール回路、電子機器
CN112104243A (zh) * 2020-11-05 2020-12-18 广东希荻微电子有限公司 降压整流电路、无线充电接收芯片以及无线充电接收器
CN113178900A (zh) * 2021-03-15 2021-07-27 荣耀终端有限公司 无线充电系统、芯片和无线充电电路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4123426A4

Also Published As

Publication number Publication date
CN113271576B (zh) 2022-03-01
WO2022193816A1 (zh) 2022-09-22
EP4089511A4 (en) 2023-08-09
CN113178900A (zh) 2021-07-27
CN113268172B (zh) 2022-07-05
EP4089518A4 (en) 2023-07-12
US11995251B2 (en) 2024-05-28
CN113238649A (zh) 2021-08-10
CN113271576A (zh) 2021-08-17
CN113268174A (zh) 2021-08-17
CN115373531B (zh) 2023-10-20
EP4266161A4 (en) 2024-04-24
CN113238703A (zh) 2021-08-10
CN113238649B (zh) 2022-12-27
CN113268148B (zh) 2022-08-09
CN113268173B (zh) 2022-07-08
CN113238703B (zh) 2022-08-23
CN115373531A (zh) 2022-11-22
CN113238609B (zh) 2022-04-19
CN113220154A (zh) 2021-08-06
WO2022193815A1 (zh) 2022-09-22
EP4092510A4 (en) 2023-12-13
US20240094841A1 (en) 2024-03-21
US20240201806A1 (en) 2024-06-20
EP4262255A4 (en) 2024-04-10
CN113220154B (zh) 2022-07-08
CN113268174B (zh) 2022-10-25
CN113268148A (zh) 2021-08-17
CN113268172A (zh) 2021-08-17
CN113253856A (zh) 2021-08-13
EP4089518A1 (en) 2022-11-16
EP4089511A1 (en) 2022-11-16
WO2022193811A9 (zh) 2023-07-13
CN113253855B (zh) 2022-07-22
CN113220144A (zh) 2021-08-06
CN113268173A (zh) 2021-08-17
US20240176403A1 (en) 2024-05-30
CN113268175A (zh) 2021-08-17
CN116247766A (zh) 2023-06-09
WO2022193873A1 (zh) 2022-09-22
WO2022193815A9 (zh) 2023-09-14
WO2022193814A1 (zh) 2022-09-22
EP4123426A1 (en) 2023-01-25
EP4092510A1 (en) 2022-11-23
EP4123426A4 (en) 2023-11-08
CN113253855A (zh) 2021-08-13
CN113220144B (zh) 2022-06-07
CN113253856B (zh) 2023-02-24
US20230195244A1 (en) 2023-06-22
CN113178900B (zh) 2023-02-17
CN113238609A (zh) 2021-08-10
US20240028141A1 (en) 2024-01-25
EP4262255A1 (en) 2023-10-18
WO2022193811A1 (zh) 2022-09-22
EP4266161A1 (en) 2023-10-25
US20240211055A1 (en) 2024-06-27

Similar Documents

Publication Publication Date Title
WO2022193852A1 (zh) 无线充电系统、芯片和无线充电电路
US10879747B2 (en) Apparatus for transmitting wireless power and method of transmitting wireless power according to position type
WO2015023092A1 (ko) 무선 전력 전송 시스템에서 무선 충전 제어 방법 및 장치
US20240168572A1 (en) Stylus and electronic device assembly
WO2023005393A1 (zh) 一种无线充电系统
CN112640252A (zh) 无线充电设备
US9857846B2 (en) Portable computing device cover including a keyboard
CN114465366B (zh) 一种无线充电的方法及电子设备
KR20210037377A (ko) 무선 전력 송수신 장치 및 그 동작 방법
US20210399591A1 (en) Electronic device and method for wirelessly transmitting or receiving power
WO2023040602A1 (zh) 一种电子设备连接方法及电子设备
WO2023082768A1 (zh) 功能模式切换方法、电子设备及系统

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2022770211

Country of ref document: EP

Effective date: 20221020

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22770211

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 17998417

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE