CN108009433A - Electronic equipment, display system and its integrated control device, control method - Google Patents
Electronic equipment, display system and its integrated control device, control method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000012795 verification Methods 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000001939 inductive effect Effects 0.000 claims abstract description 19
- 239000004973 liquid crystal related substance Substances 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 229920001621 AMOLED Polymers 0.000 claims description 6
- 238000003032 molecular docking Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
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- 230000006870 function Effects 0.000 description 16
- 239000011521 glass Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 12
- 238000012545 processing Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- 238000013478 data encryption standard Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
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- 241001269238 Data Species 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/606—Protecting data by securing the transmission between two devices or processes
-
- 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
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
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- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
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Abstract
This application discloses electronic equipment, display system and its integrated control device, safe verification method.The integrated control device includes：Display unit, for providing display drive signals to display device；Touch control unit, for receiving inductive signal from touch sensing, and is converted into touch sensible data by the inductive signal；And processor, for control display unit and touch control unit, judge whether that receiving encrypted transmission enables instruction, if it is, will be exported after the touch sensible data encryption, otherwise export the touch sensible data in the form of non-encrypted.The function that the integrated control device has display driving concurrently, touch-control driving and encryption judge, when touch sensible data are related to safety verification, touch sensible data be may insure with ciphertext transmission, so that its risk for being trapped and distorting is reduced, so as to improve security and save system resource.
Description
Technical field
This application involves display technology field, is filled more particularly, to electronic equipment, display system and its integrated control
Put, control method.
Background technology
With the arrival in big data epoch, the safety of mass data becomes the key that must be effectively solved in " human-computer interaction "
Problem.The display screen configured on an electronic device is applied not only to display image and text, and is further developed into human-computer interaction
Important channel.Touch sensing, fingerprint sensor, acoustic sensor, optical sensor etc. can be integrated on a display screen, from
And form display system.User can directly input word, selection icon, gesture control, sound, recognition of face on a display screen
Deng operation.
For display system as the entrance of information gathering and the outlet of display content, the safety of data interaction is carry can not
The key player of replacement.The interaction data gathered on a display screen not only includes the text message of such as input through keyboard etc, and
And the privacy informations such as fingerprint, face feature may be included.These sensitive datas will be sent to from the driving chip of display screen
Processor on mainboard, is handled by operating system to realize the functions such as safety verification.
Above-mentioned display system directly provides sensitivity of the prior art there is leakage user of sensitive data to operating system
The potential risk of data.The function that safety verification is the operating system of most of mobile terminals is carried out in system level, for example, peace
Tall and erect system provides fingerprint recognition frame.Application APP obtains the authority for calling authentication from operating system, could complete
The functional requirements such as payment.After the request of application APP is received, operating system collection fingerprint, and by collection
Fingerprint is contrasted with the fingerprint characteristic data stored, so as to judge user identity.Application APP obtains identity from operating system
The result of verification.However, user is to realize authentication function to the purpose of application APP, and unintentionally by the sensitive number of oneself
According to being supplied to application APP.If application APP tries to get sensitive data, then the protection for privacy of user
It is extremely disadvantageous.The application APP of some malice even can pretend to be user identity using sensitive data, so as to produce pole
Big security risk.
In further improved system, the safety verification of hardware-level can be used.For example, electronic equipment can include
Additional safety chip, so as to individually store and verify sensitive data by safety chip.However, safety chip not only increases is
System cost, and the communication between safety chip and operating system also results in system effectiveness reduction.
Therefore, expect further to improve the security of display system and improve the effect that operating system carries out safety verification
Rate.
The content of the invention
In view of the above problems, it is an object of the invention to provide display system and its integrated control device and safety verification side
Method, wherein, safety verification is carried out in the integrated control device of display screen, to improve security and save system resource.
According to the first aspect of the invention, there is provided a kind of integrated control device, including：Display unit, for being filled to display
Offer display drive signals are provided；Touch control unit, for receiving inductive signal from touch sensing, and the inductive signal is turned
Change touch sensible data into；Processor, for control display unit and touch control unit, judges whether that receiving encrypted transmission enables
Instruction, if it is, will be exported after the touch sensible data encryption, otherwise by the touch sensible data with non-encrypted shape
Formula exports.
Preferably, the encrypted transmission enables the correspondence comprising touch location and secure authentication information, institute in instruction
Processor is stated to be additionally operable to before encryption according to the correspondence from the touch sensible extracting data secure authentication information.
Preferably, the secure authentication information includes personal recognition code PIN code.
Preferably, the touch control unit includes：Touch-control logic module, for providing touch-control drive signal and receiving touch-control sense
Induction signal, and the received touch-control sensing signal of docking is amplified and digital-to-analogue conversion, to produce touch sensible data；And touch
Interface is controlled, for touch sensible data or secure authentication information to be sent to the outside of the integrated control device.
Preferably, the display unit is used to drive liquid crystal display or AMOLED display screens.
Preferably, the integrated control device is one single chip.
According to the second aspect of the invention, there is provided a kind of display system, including：Display device, for according to display number
According to display image；Touch sensing, the inductive signal produced is touched for obtaining user；And above-mentioned integrated control device.
According to the third aspect of the invention we, there is provided a kind of electronic equipment, including：Above-mentioned display system；And master control
Unit, instruction is enabled for sending encrypted transmission to the display system under safety-related application environment, and according to from
The encrypted touch sensible data of process of display system carry out safety verification.
According to the fourth aspect of the invention, there is provided come a kind of controlling party performed in above-mentioned integrated control device
Method, including：Display drive signals are provided to display device, and receives inductive signal from touch sensing and believes the sensing
Number it is converted into touch sensible data；Judge whether that receiving encrypted transmission enables instruction, if it is, by the touch sensible number
According to being exported after encryption, otherwise the touch sensible data are exported in the form of non-encrypted.
Preferably, the encrypted transmission enables the correspondence comprising touch location and secure authentication information, institute in instruction
Control method is stated to further include：Believed before encryption according to the correspondence from the touch sensible extracting data safety verification
Breath.
Preferably, the secure authentication information includes PIN code..
According to this embodiment in display system, the processor in integrated control device has display driving, touch-control driving concurrently
The function of judging with encryption.Processor is after touch-control logic module obtains sensed data, as needed to touch sensible data
It is encrypted or does not encrypt and exports again.Thus, it not is the touch sensible number of single type in the transmission data that touch-controlling interface provides
According to, but can be one of encrypted or non-encrypted touch.In this way, when touch sensible data are related to safety verification, can
To ensure touch sensible data with ciphertext transmission, so as to reduce its risk for being trapped and distorting, security is effectively increased；When
When touch sensible data are not directed to safety verification, it can be ensured that touch sensible data are quickly transmitted, so that not to common touch-control
The processing speed and efficiency of operation cause materially affect.
By the way that further from touch sensitive data then identification sensitive information re-encrypts output, on the one hand mitigate master control list
The burden of member, on the other hand can further improve security, eliminate the data not comprising sensitive information, avoid it by mistake
Ground encryption and decryption, improves the accuracy and treatment effeciency of safety verification.
The integrated control device need not set single safety chip, in the case of hardware cost is not increased, still may be used
To carry out the safe transmission of hardware-level.
The structure size of existing display module can be reduced using integrated control device, reduces electronic component quantity, drop
Low design complexities, improve yield rate.
Brief description of the drawings
By the description to the embodiment of the present invention referring to the drawings, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from.
Fig. 1 shows the equivalent circuit diagram of liquid crystal display device in display system according to embodiments of the present invention.
Fig. 2 shows the equivalent circuit diagram of touch device in display system according to embodiments of the present invention.
Fig. 3 shows the internal structure schematic diagram of display system according to embodiments of the present invention.
Fig. 4 shows the circuit connection diagram of display system according to embodiments of the present invention.
Fig. 5 shows a kind of schematic block diagram of integrated control device in display system according to embodiments of the present invention.
Fig. 6 shows the schematic block diagram of another integrated control device in display system according to embodiments of the present invention.
Fig. 7 show in display system according to embodiments of the present invention using time-sharing multiplex mode carry out display and touch-control when
Sequence figure.
Fig. 8 shows the flow chart of the example control method performed in integrated control device according to embodiments of the present invention.
Fig. 9 shows the flow of another example control method performed in integrated control device according to embodiments of the present invention
Figure.
Embodiment
Hereinafter reference will be made to the drawings is more fully described the present invention.In various figures, identical element is using similar attached
Icon is remembered to represent.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.Furthermore, it is possible to it is not shown some
Known part.
It describe hereinafter many specific details of the present invention, such as the structure of device, material, size, processing work
Skill and technology, to be more clearly understood that the present invention.But just as the skilled person will understand, it can not press
The present invention is realized according to these specific details.
In this application, term " local " represents to be arranged on the chip internal of the integrated control device at display screen end, or
It is located at integrated control device in same printed circuit board.For example, " local verification " represents the chip in integrated control device
Inside performs proving program by processor, and " being locally stored " represents to be used to store characteristic, encipheror and proving program
Non volatile memory bits are located at same printed circuit in the chip internal of integrated control device, or with integrated control device
On plate.
The present invention can be presented in a variety of manners, some of them example explained below.
Display system according to embodiments of the present invention includes display device and at least one biography for obtaining user information
Sensor.The display device is, for example, selected from liquid crystal display, LED display, AMOLED display screens, quantum dot display screen, electronics
Any of paper, MicroLED display screens.The sensor be, for example, selected from touch device, fingerprint sensor, optical sensor,
Any of acoustic sensor.In examples below, illustrated by taking Touch-control liquid crystal display screen as an example, wherein, display
Device is liquid crystal display device, and sensor is touch device.
Fig. 1 shows the equivalent circuit diagram of liquid crystal display device in display system according to embodiments of the present invention.
Liquid crystal display device 110 include grid electrode drive module 111, source drive module 112, multiple thin film transistor (TFT) T, with
And the multiple pixel capacitance C formed between pixel electrode and public electrodeLC.The multiple thin film transistor (TFT) T forms array.Grid
Pole drive module 111 is respectively connected to the grid of the thin film transistor (TFT) T of corresponding line via a plurality of controlling grid scan line, for scanning
Mode provide grid voltage G1 to Gm so that in a picture frame period, gate the thin film transistor (TFT) do not gone together.Source electrode drives
Dynamic model block 112 is respectively connected to the source electrode of the thin film transistor (TFT) T of respective column via a plurality of source data line, in the more of each row
During a thin film transistor (TFT) T gatings, provided respectively to multiple thin film transistor (TFT) T of each row with the corresponding gray scale voltage S1 of grayscale extremely
Sn.Wherein, m and n is natural number.The drain electrode of the multiple thin film transistor (TFT) T is respectively connected to a corresponding pixel capacitance CLC。
Under strobe state, source drive module 112 applies gray scale voltage via source data line and thin film transistor (TFT) T
It is added in pixel capacitance CLCOn.Pixel capacitance CLCOn voltage act on liquid crystal molecule, so as to change the orientation of liquid crystal molecule,
To realize and the corresponding light transmittance of grayscale.In order to keep voltage, pixel capacitance C between the update cycle of pixelLCCan be simultaneously
Join storage capacitance Cs to obtain the longer retention time.
Fig. 2 shows the equivalent circuit diagram of touch device in display system according to embodiments of the present invention.
Touch device 120 includes touch-control drive module 121, touch-control sensing module 122 and in excitation electrode and induced electricity
The multiple inductance capacitance CT formed between pole.The multiple inductance capacitance CT forms array.Touch-control drive module 121 is connected to institute
There is capable excitation electrode, for providing pumping signal Tx1 in a manner of scanning to Txm, so that in a touch-control frame period, according to
It is secondary to provide pumping signal to the excitation electrode do not gone together.Touch-control sensing module 122 is connected to the induction electrode of all row, so as to connect
Receive the reception signal Rx1 to Rxn of respective column.Wherein, m and n is natural number.
Touch-control drive module 121 for example produces ac signal and is for example received as pumping signal, touch-control sensing module 122
Ac signal, goes out current value according to signal detection is received, further obtains driving electrodes and sensing according to the size of current value
The capacitance of electrode crossings, so as to judge whether to produce touch action in the point.
It is described above by taking touch device 120 is mutual capacitance touch device as an example, it will be apparent to one skilled in the art that
The embodiment of the present invention not limited to this, touch device 120 can also be arranged as required into self-capacitance touch control detection device,
This is repeated no more.
Fig. 3 shows the internal structure schematic diagram of display system according to embodiments of the present invention.In this embodiment, display system
Unite as touching display screen 100.
As shown in the figure, touching display screen 100 includes liquid crystal display and stacks gradually 171 and of touch sensing thereon
Glass cover-plate 172.Liquid crystal display includes the backlight illuminating unit 131 for providing backlight and the liquid crystal for changing light transmittance according to grayscale signal
Panel.Touch sensing 171 is for example used as substrate using plastic sheet.
Liquid crystal panel further comprises the first glass substrate 141 relative to each other successively, the second glass substrate 142, is clipped in
Therebetween liquid crystal layer 161, forms the first polaroid 142 and tft array 143, in the second glass on the first glass substrate 141
The second polaroid 152 and colour filter 153 are formed on glass substrate 142.
First glass substrate 141 also forms a plurality of controlling grid scan line and a plurality of source data line and multiple pixel electrodes, TFT
Array 143 includes multiple thin film transistor (TFT)s, and the grid of the thin film transistor (TFT) is connected to a corresponding controlling grid scan line, source electrode
A corresponding source data line is connected to, drain electrode is connected to a corresponding pixel electrode.In pixel electrode and public electrode
Between form pixel capacitance.As described below, liquid crystal panel further includes driving chip, the grid electrode drive module in the driving chip
Grid voltage and gray scale voltage are provided respectively with source drive module.
Under the strobe state of thin film transistor (TFT), source drive module is via source data line and thin film transistor (TFT), by ash
Rank voltage is applied to pixel capacitance CLCOn.Pixel capacitance CLCOn voltage act on liquid crystal molecule, so as to change liquid crystal molecule
Orientation, with realize with the corresponding light transmittance of grayscale, shown so as to fulfill corresponding grayscale.
The touching display screen 100 of " cover board externally embedded type sensor " is shown in this embodiment, with the base of the explanation present invention
Present principles.However, present invention could apply to the touching display screen of various structures, and be not limited to the type of sensor and its showing
Integration mode in display screen.
Using this design method, touch sensing 171 or it is added on glass cover-plate (Cover Glass, CG), or
Person is placed in a dedicated sensor layer.Method touch sensing 171 being incorporated on glass cover-plate is sometimes referred to as " cover board
Externally embedded type sensor (Sensor-on-Lens, SoL) " or " cover board integrated solution (One Glass Solution,
OGS), because this method need not increase a single sensor layer, merely with glass cover-plate.Passed using independent touch-control
The design method of sensor 171 is known as glass-film (Glass-Film, GF) or glass-film-film (Glass-Film-
Film, GFF), the former uses single-layer electrodes, and the latter uses two layers of electrode.These design methods are referred to as " separate type ", that is, touch
Control sensor 171 is as independent build stack on the surface of liquid crystal display.The advantage of separate type touch sensing coating is,
Technology maturation, risk are low, launch is fast.When using newest display and touch technology, separation design can be also used, at this
In the case of kind, usually separation design is integrated into subsequent design link.
In further improved structure, the electrod-array of touch sensing 171 is directly integrated into one layer of liquid crystal display
Or in multilayer.It is this it is integrated can be realized on the elementary cell in display screen or within elementary cell, i.e. externally embedded type (On-
Cell) integrate or embedded (In-Cell) is integrated.
The setting of touch control electrode array is known as externally embedded type to the method on the second glass substrate 151 to integrate, because sensing
Device is located on display screen elementary cell.The driving electrodes and receiving electrode of sensor can also may be used with jumper electrical isolation
To use particular topology, so that these grids can be achieved with without building bridge.Kind design afterwards is known as individual layer multiple spot externally embedded type
(Single-Layer-On-Cell, SLOC), this design is very common, because cost is relatively low, yield is higher.
It is simple, reliable to display screen increase touch controllable function using externally embedded type technology, and this method is for active matrix
For Organic Light Emitting Diode (Active-Matrix Organic Light Emitting Diode, AMOLED) display screen,
Often optimal selection.For relatively large display screen and curved surface or flexible display screen, no bridging is integrated in a manner of outer
The metal net shaped sensor of line is also to select well.
Another embedded integrate belongs to hybrid design, and the driving electrodes of wherein touch sensing are embedded in the first glass
On substrate 141, and receiving electrode is then embedded on the second glass substrate 151.It is embedded that this mode is known as mixing multiple spot
(Hybrid In-Cell) is designed.In order to avoid obscuring, term " comprehensive multiple spot is embedded (Full In-Cell) " refers to drive
Moving electrode and receiving electrode are respectively positioned within elementary cell.
In this embodiment, touch sensing is integrated with the display system.In alternate embodiments, except touch-control senses
Outside device, various Photobiology sensors, such as fingerprint sensor, acoustic sensor, optical sensor etc. can also be integrated, is used
In biological informations such as collection fingerprint, vocal print, irises.
Fig. 4 shows the schematic diagram of the electronic equipment comprising display system according to embodiments of the present invention.The electronic equipment can
Think any of mobile phone, tablet computer, laptop, VR equipment, AR equipment, wrist-watch, automobile, bicycle, it includes
Mainboard 410 and display system.In this embodiment, display system is touching display screen 100.Touching display screen 100 except including
Further comprise integrated control chip 210 outside display device and touch sensing, integrated control chip 210, which is used to drive, to be shown
Device simultaneously obtains touch information from touch sensing.For liquid crystal display, integrated control chip 210 is the film in liquid crystal display
Transistor provides display drive signals, including grid voltage and gray scale voltage, and is the driving electrodes control in touch sensing
Touch-control drive signal processed, and reception signal is obtained from the receiving electrode in touch sensing, to judge touch location.This is integrated
Control chip 210 is connected to mainboard 410 via connection component 310.Connection component 310 is, for example, flexible PCB.Mainboard 410 wraps
Primary processor is included as main control unit, is used for realization the function of operating system.
In the display system of the prior art, the sensitive data of collection is sent to the master control of mainboard 410 from display device 100
Unit.Operating system after the request of application APP is received, operating system by sensitive data with storage characteristic
Contrast, so as to judge user identity, realize the function of safety verification.Application APP obtains authentication from operating system
Result.This is related to personal recognition code for some safety-related applications, such as in the touching position information of transmission
In the case of the information related with safety verification such as (PIN, Personal Identification Number) code, once opened
The Malware put under formula environment is intercepted and captured, and will produce irremediable influence.
According to this embodiment in display system, integrated control chip 210 has encryption arbitration functions, when receiving for example
When encrypted transmission from mainboard 410 enables instruction, mainboard 410 will be output to after touch sensible data encryption to ensure to test safely
The security of information is demonstrate,proved, and when not receiving encrypted transmission and enabling instruction by the touch sensible data in the form of non-encrypted
Mainboard 410 is output to so that common touch control operation uses.In this way, when touch sensible data are related to safety verification, can be true
Protect touch sensible data to be passed with ciphertext, so as to reduce its risk for being trapped and distorting, effectively increase security.
Fig. 5 shows a kind of schematic block diagram of integrated control device in display system according to embodiments of the present invention.This is aobvious
Show system for example with liquid crystal display.
As shown in the figure, integrated control chip 210 include processor 211, user interface 231, storage unit, display unit and
Touch control unit.
Processor 211 is von Karman or the RISC CPU of Harvard framework, includes but not limited to ARM, MIPS, OPEN
RISC etc., is preferably ARM；Can also be DSP etc..The processor 211 is directed to touch control detection or the sensor for remaining type
Optimize.Processor 211 can enable instruction by the touch sense related with safety verification according to the encrypted transmission from mainboard
Exported again after answering data encryption, or even in certain embodiments, can also be in processing locality touch sensible data, to judge to be
It is no to need wake operation systems process user to ask.
User interface 231 can support various communications protocols and numeral I/O, such as I2C agreements and SPI protocol, and carry
For multiple numeral I/O pins.The user's interface 231 can communicate with one another with the primary processor on mainboard.
Storage unit further comprises data RAM 241, program RAM 242, guiding ROM 243 and flash memory 244.In flash memory
At least one of characteristic, encipheror and proving program can be stored in 244.In powering on for integrated control chip 210
Period, guides the bootstrap in ROM 243 to detect flash memory 244, and encipheror and verification journey are loaded from flash memory 244
It is at least one in sequence, it is decrypted and stores data in program RAM.The data that processor 211 produces during operation
It can then be stored in data RAM 241.In this embodiment, the characteristic in flash memory 244 can come from the master on mainboard
Processor or the characteristic that locally collection and data processing obtain under the control of processor 211.In the feelings of the latter
Under shape, the not only sensitive data of user but also characteristic is locally generated.Operating system is only from integrated control chip 210
Verification result is obtained, and both sensitive data and characteristic can not be got, so as to be conducive to further improve security.
Display unit includes display controller 212, graphics engine 213, time schedule controller 214, display and graphic interface
215th, grid electrode drive module 216, source drive module 217, common electric voltage drive module 218, backlight control module 219 and gamma
Base modules 251.Display controller 212 is used to produce graph data according to the display data of input.Graphics engine 213 is used to control
Memory window, cursor, pointer and smart figure processed, so as to provide high performance optimization figure for touch-control.Display and figure connect
Mouth 215 provides the display interface of a variety of industrial standards, for receiving display data, such as DSI TCVR, DBI I/F, DPI I/
F.Backlight control module 219 is used for the backlight for controlling liquid crystal display, low-power consumption management is realized, so as to energy saving with existing backlight
Technology is combined.Grid electrode drive module 216, source drive module 217, common electric voltage drive module 218 are respectively used to produce grid
Pole tension, gray scale voltage and common electric voltage.Time schedule controller 214 is used for the output time of control gate electrode and gray scale voltage,
So as to which in a picture frame period, grid voltage G1 to Gm is provided in a manner of scanning, selected in the thin film transistor (TFT) of corresponding line
When logical, provided to multiple thin film transistor (TFT) T of each row with the corresponding gray scale voltage S1 of grayscale to Sn, so that on pixel capacitance
Apply voltage and change the orientation of liquid crystal molecule, to realize and the corresponding light transmittance of grayscale.Gamma base modules 251 are used to deposit
Gamma correction curve is stored up, and provides correction signal to source drive module 217 and is used to correct the gray scale voltage, to meet people
Nonlinear requirements of the eye to brightness change.
Touch control unit includes touch-control logic module 221 and touch-controlling interface 222.Touch-control logic module 221 has touch-control driving concurrently
The function of module and touch-control sensing module, so as to provide touch-control drive signal TX and receive touch-control sensing signal RX.Touch-control
Logic module 221 is docked received touch-control sensing signal and is amplified and digital-to-analogue conversion, to produce touch sensible data.Touch-control connects
Touch sensible data are provided to the primary processor of mainboard by mouth 222, are further handled by operating system.
Integrated control device is used for realization at least one of display driving and touch-control driving function according to prior art.Should
CPU in integrated control device can have display driving and touch-control driving function concurrently.In integrated control device, CPU is from touch-control
Logic module obtains touch sensible data, and touch sensible data then are provided directly to touch-controlling interface, so that by single type
Sensed data be sent to outside display screen.Processor on mainboard obtains the sensed data, and further wake operation system is right
Sensed data is verified.The integrated control device of the present technology without distinguishing, operates the sensitive program of sensed data
System directly obtains sensitive data.
It is different from the integrated control device of the prior art, in this embodiment, the processor in integrated control device 210
The function that 211 have display driving concurrently, touch-control driving and encryption judge.In a preferred embodiment, the mould of integrated control chip 210
Block is integrated in one single chip, so as to improve security.However, the invention is not restricted to a little.Integrated control chip 210 can be formed
Multiple chips, and be commonly mounted on the circuit board at display screen end.Processor 211 is touched from touch-control logic module 221
After sensed data, different data processings is performed according to the type of touch sensible data.Thus, provided in touch-controlling interface 222
Transmission data be not the sensed data of single type, but can be touch sensible data, one of encryption data.
In this embodiment, the flash memory 244 of integrated control chip 210 is used to store characteristic, encipheror and verification
At least one of program.However, the present invention is not limited thereto.In alternate embodiments, integrated control chip 210 can use
Any kind of nonvolatile memory, is selected from any of flash memory, SRAM, DRAM, EEPROM, EPROM.At some
In embodiment, operating system is under safety-related application scenarios, such as under the application scenarios for needing safety verification, via with
Family interface 231 sends encrypted transmission to integrated control chip 210 and enables instruction, is stored in the flash memory 244 of integrated control chip 210
Encipheror, processor 211 when receiving the encrypted transmission for example from mainboard 410 via user interface 231 and enabling instruction,
Using encipheror by the touch sensible data encryption from touch control unit, and by encrypted touch sensible data via user
Interface 231 is output to mainboard 410；Operating system is under the application scenarios of non-safety-related, such as in common touch-control application scenarios
Under, do not send encrypted transmission to integrated control chip 210 and enable instruction, integrated control chip 210 is without inciting somebody to action in this case
Touch sensible data encryption is output to mainboard 410 so that common touch control operation uses.In this way, it is related to safe
Touch sensible data are transmitted between mainboard 410 and integrated control chip 210 in an encrypted form, are reduced and are carried such as
The possibility that the touch sensible data of the security information of PIN code etc are stolen, thus improve security.The integrated control chip
210 need not set single safety chip, in the case of hardware cost is not increased, still can carry out the safety of hardware-level
Protection.
In this embodiment, flash memory 244 is integrated in integrated control chip 210, to improve security.In the implementation of replacement
In example, flash memory 244 can be located at the outside of integrated control chip 210 and be connected via bus with integrated control chip 210,
To reduce system cost.
Fig. 6 shows the schematic block diagram of another integrated control device in display system according to embodiments of the present invention.Should
Display system is for example with AMOLED display screens.
As shown in the figure, integrated control chip 220 include processor 211, user interface 231, storage unit, display unit and
Touch control unit.
Processor 211 is von Karman or the RISC CPU of Harvard framework, includes but not limited to ARM, MIPS, OPEN
RISC etc., is preferably ARM；Can also be DSP etc..The processor 211 is directed to touch control detection or the sensor for remaining type
Optimize.Processor 211 can enable instruction by the touch sense related with safety verification according to the encrypted transmission from mainboard
Export after answering data encryption, or even in certain embodiments, can also be inputted in processing locality touch-control again, to judge whether to need
Wake operation systems process user is wanted to ask.
User interface 231 can support various communications protocols and numeral I/O, such as I2C agreements and SPI protocol, and carry
For multiple numeral I/O pins.The user's interface 231 can communicate with one another with the primary processor on mainboard.
Storage unit further comprises data RAM 241, program RAM 242, guiding ROM 243 and flash memory 244.In flash memory
Characteristic and at least one of encipheror and proving program are stored in 244.The phase is powered in integrated control chip 220
Between, guide the bootstrap in ROM243 to detect flash memory 244, and encipheror and proving program are loaded from flash memory 244,
And it is decrypted and stores data in program RAM.The data that processor 211 produces during operation can be then stored in
In data RAM 241.In this embodiment, the characteristic in flash memory 244 can come from the primary processor on mainboard, can also
It is the characteristic that locally collection and data processing obtain under the control of processor 211.In the case of the latter, not only user
Sensitive data and also characteristic be locally generated.Operating system only obtains verification result from integrated control chip 220,
And both sensitive data and characteristic can not be got, so as to be conducive to further improve security.
Display unit includes display controller 212, graphics engine 213, time schedule controller 214, display and graphic interface
215th, row drive module 226, row drive module 227 and gamma base modules 251.Display controller 212 is used for according to input
Display data produces graph data.Graphics engine 213 is used to control memory window, cursor, pointer and smart figure, so as to be directed to
Touch-control provides high performance optimization figure.Display and graphic interface 215 provide the display interface of a variety of industrial standards, for receiving
Display data, such as DSI TCVR, DBI I/F, DPI I/F.Row drive module 226 and row drive module 227 are respectively used to produce
Raw grid voltage and gray scale voltage.Time schedule controller 214 is used for the output time of control gate electrode and gray scale voltage, so that
In one picture frame period, grid voltage G1 to Gm is provided in a manner of scanning, in the thin film transistor (TFT) gating of corresponding line, to
The multiple thin film transistor (TFT) T respectively arranged are provided with the corresponding gray scale voltage S1 of grayscale to Sn, so as to apply on a light emitting diode
The electric current of numerical value corresponding with gray scale voltage and shine, with realize with the corresponding luminosity of grayscale.Gamma base modules 251
For storing gamma correction curve, and nematic drive module 227 provides correction signal and is used to correct the gray scale voltage, with symbol
Close nonlinear requirements of the human eye to brightness change.
Touch control unit includes touch-control logic module 221 and touch-controlling interface 222.Touch-control logic module 221 has touch-control driving concurrently
The function of module and touch-control sensing module, so as to provide touch-control drive signal TX and receive touch-control sensing signal RX.Touch-control
Logic module 221 is docked received touch-control sensing signal and is amplified and digital-to-analogue conversion, to produce sensed data.Touch-controlling interface
222 are provided to sensed data the primary processor of mainboard, are further handled by operating system.
In this embodiment, the processor 211 in integrated control chip 220 has display driving, touch-control driving and encryption concurrently
The function of judgement.Processor 211 performs after touch-control logic module 221 obtains sensed data according to the type of sensed data
Different data processings.Thus, it not is the sensed data of single type in the transmission data that touch-controlling interface 222 provides, but can
Think one of touch sensible data and encryption data.
In certain embodiments, operating system is under safety-related application scenarios, such as is needing answering for safety verification
With under scene, encrypted transmission is sent to integrated control chip 210 via user interface 231 and enable instruction, integrated control chip 210
Flash memory 244 in storing encryption program, processor 211 is when receiving encryption for example from mainboard 410 via user interface 231
During the enabled instruction of transmission, using encipheror by the touch sensible data encryption from touch control unit, and by encrypted touch
Sensed data is output to mainboard 410 via user interface 231；Operating system under the application scenarios of non-safety-related, such as
Under common touch-control application scenarios, encrypted transmission is not sent to integrated control chip 210 and enable instruction, integrate control in this case
Touch sensible data encryption without being output to mainboard 410 so that common touch control operation is used by coremaking piece 210.By this
Mode, is related to safe touch sensible data and is transmitted in an encrypted form between mainboard 410 and integrated control chip 210, drop
The possibility that the touch sensible data of the low security information for carrying such as PIN code etc are stolen, thus improve security.
The integrated control chip 220 need not set single safety chip, in the case of hardware cost is not increased, still can carry out
The safeguard protection of hardware-level.
In this embodiment, flash memory 244 is integrated in integrated control chip 220, to improve security.In the implementation of replacement
In example, flash memory 244 can be located at the outside of integrated control chip 220 and be connected via bus with integrated control chip 220,
To reduce system cost.
Fig. 7 show in display system according to embodiments of the present invention using time-sharing multiplex mode carry out display and touch-control when
Sequence figure.
In practical applications, display system can integrate polytype sensor.Processing in integrated control chip 210
Device has display driving, sensor driving and three kinds of functions of safety verification concurrently, so as to provide the secure authentication mechanisms of hardware level.Respectively
Kind sensing unit is in periodicity polling status with relatively low working frequency.
For touch control detection, when sensing unit senses are to when having object touch, conversion is in working condition, and collection touches number
According to display data and touch data are by the way of time-sharing multiplex at this time.
For contact living things feature recognition, such as fingerprint recognition, contact living things feature recognition needs to touch, therefore,
The biological attribute data that this mode gathers is similar with touch data, with display data by the way of time-sharing multiplex.
Identify, be preset for contactless biometric.For needing the collection manually supervised, string can be used
Row data frame, switching display data are current gathered data, after currently displayed gathered data terminates, then are switched to original
Picture to be shown.If, can be with and contactless biometric identification gatherer process need not manually supervise (unsupervised)
Display data is by the way of time-sharing multiplex in background process., it is necessary to manually proofread when such as gathering image using imaging sensor
Whether real-time image acquisition meets the requirements, then can show and be currently capturing object, and display data is imaging sensor at this time
Current gathered data.
By touch-control with being illustrated exemplified by showing the situation that need to synchronously carry out.
Blanking interval in picture frame handoff procedure, influence of noise of the display unit for touch control unit are smaller.Thus exist
In actual work, display and touch-control use time-sharing multiplex principle to device, display data processing can be handled with touch data when
Between it is upper separate, interfered with each other with reducing.Among image frame scan, some time slots are marked off, as touch-control frame.
As shown in fig. 7, during a picture frame, respectively including multiple display period TP and multiple touch-control periods
TP.In the different periods, the alternately processing of display data and touch data.That is display and touch-control time-sharing multiplex.Cause
Human eye has certain recognition time window to changing picture, thus frame per second and the time accounting of two kinds of periods have and have to
Ask.Using this type of drive, influence of the noise electric signal of LCD array to touch working lining can be effectively reduced, also
Shielding lamination is saved, reduces the thickness of touching display screen.
Above time-sharing multiplex function, can be operated by software program, can also combine MUX multiplexings multiplexing selecting unit
Switch over.
Fig. 8 shows the flow chart of the example control method performed in integrated control device according to embodiments of the present invention.
Integrated control device can be for example with the integrated control chip 220 shown in the integrated control chip 210 or Fig. 6 shown in Fig. 5
Realize.The control method describes integrated control device and is connected with touch sensing to obtain touch sensible data, Yi Ji
It will be exported when touch sensible data are related to safety applications after touch sensible data encryption.As an example, it is related to touching for safety applications
The information such as PIN code, verification gesture can be carried by touching sensed data.
In step S101, integrated control chip provides display drive signals to display device, and is obtained from touch sensing
Obtain inductive signal.In certain embodiments, in addition to touch sensing, integrated control chip can connect various other sensings
Device, in this case integrated control chip can also obtain sensor type while inductive signal is obtained from sensor,
So as to identification sensor type.Such as connect different types of sensor, Yi Jiji by the different pins of integrated control chip
The mark of sensor is obtained in pin.In alternate embodiments, sensor will identify and inductive signal be sent to together it is integrated
Control chip.
Then, subsequent step S102 to S105 is continued to execute in integrated control chip internal.
In step s 102, inductive signal is processed into touch sensible data.For example, can be by integrated control chip
Touch-control logic module docking collection of letters RX is amplified and analog-to-digital conversion, to produce the touch sensible data.
In step s 103, judge whether that receiving encrypted transmission enables instruction, if it is, step S104 is performed, it is no
Then perform step S105.It can be that mainboard 410 produces that encrypted transmission, which enables instruction, such as the main control unit of mainboard 410 is relating to
And (such as PIN code verification scene in financial service) refers to integrated control chip offer encrypted transmission under the application scenarios of safety
Order, so that integrated control chip encrypts the sensed data provided.Various operations are carried out on touching display screen 110.Even
The same action of user, it is also possible to be respectively sensitive data or nonsensitive data.For example, in unlocking screen or application program
When APP is asked, operating system produces interface for password input on touching display screen 110, and the touch generation of subsequent user is defeated
Enter password.The input password is to be related to safe content, i.e. sensitive data.On the contrary, figure contracting is carried out in application APP
When putting operation, the touch of user then produces scaling instruction, and scaling instruction is can be with disclosure, i.e., non-sensitive number
According to.Here so-called password can be PIN code or other are related to safe content, include but not limited to character style password, with
And other passwords by touching generation, such as gesture password etc..Certainly it is so-called in the case where being connected with other sensors
Password can also be obtained by other sensors, such as the sound password obtained by audio sensor, be passed by optics
Quick Response Code that sensor obtains etc..
In step S104, by touch sensible data encryption, step S105 is then performed.CPU in integrated control chip
Be related to safe (such as related with PIN code) that the encipheror in flash memory can be called to provide touch-control logic module is touched
Touch sensed data encryption.
As an example, ciphering process can include：
1) integrated control device and main control unit conversate secret key negotiation, such as integrated control device can generate at random
Number, is sent to operating system, operating system obtains session key using preset private key decryption, uses using preset public key encryption
In follow-up data encrypting and deciphering.The preset of shared secret key can generate link realization in equipment, such as can write shared key
In to the integrated control device of display system and in the safe space of electronic equipment such as smart mobile phone.It can use symmetrical close
Key, electronic equipment generation random number write in integrated control chip and electronic equipment at the same time；Unsymmetrical key can also be used, it is public
Key is preset in integrated control chip, and private key is preset in electronic equipment.
2) integrated control device is encrypted touch sensible data using interim conversation key, for example can be added with data
Data Encryption Standard (DES, Data Encryption Standard), triple DES (3DES), Advanced Encryption Standard (AES,
Advanced Encryption Standard), the encryption of SM4 scheduling algorithms, encrypted result passes to operating system, and pass through can
Letter application.Cryptographic service under trusted application meeting call operation system trusted context carries out data deciphering, and key has been assisted for both sides
The symmetric key of business, the symmetric cryptographic algorithm of algorithms selection both sides synchronization, such as DES, 3DES, AES, SM4, after data deciphering by
Trusted application carries out the data parsing of touch location, corresponding PIN code value is obtained, for authentication.
In step S105, touch sensible data are exported.Integrated control chip can will be passed through by touch-controlling interface and be added
Main control unit close or that mainboard is supplied to without encrypted touch sensible data, for its follow-up security related operations or general
Logical touch control operation uses.In certain embodiments, different types of data can be packed and be sent to outside integrated control chip
Portion.The data that the step is packed include above-mentioned by encrypted touch sensible data and without encrypted touch sensible number
Any of according to.Data packing additional start bit and type identification before being for example included in data content, in data content
Stop bits and check bit are added afterwards.
The main control unit that these data will be sent on electronic equipment mainboard from the integrated control chip of display screen, for example, it is main
Processor, is handled by operating system to realize acquisition data content.Operating system can be with identification data according to type identification
Content is by encrypted or without encrypted touch sensible data.The main control unit of electronic equipment is being received from collection
Into after the not encrypted touch sensible data of control chip, it is general that image scaling, web page browsing etc. are carried out according to it
Logical touch control operation, after receiving by encrypted touch data or secure authentication information, safety verification is carried out according to it.
For example, main control unit can will pass through encrypted touch sensible data deciphering to obtain touching position information, according to touch location
Information come obtain secure authentication information and by safety verification template of the secure authentication information of acquisition with prestoring compare with
Determine whether consistent, if it is decision verification success, otherwise decision verification fails.Obtained here according to touching position information
The operation of secure authentication information can be performed based on the correspondence of touch location and secure authentication information, such as according to safety
The character position table of comparisons of keyboard identifies the corresponding character of touch location, and the character continuously inputted then forms such as PIN code
Etc secure authentication information.
Transmitted in an encrypted form between mainboard and integrated control device by the way that safe touch sensible data will be related to,
The possibility that the touch sensible data for the security information for carrying such as PIN code etc are stolen is reduced, thus improves safety
Property.Meanwhile in the case where being not directed to safe common touch-control scene, touch sensible data can be supplied to mainboard without encryption, really
The processing speed and efficiency of touch control operation are protected.
Fig. 9 shows the flow of another example control method performed in integrated control device according to embodiments of the present invention
Figure.It is similar with the control method of Fig. 8, integrated control device equally can for example with the integrated control chip 210 shown in Fig. 5 or
Integrated control chip 220 shown in Fig. 6, difference is at least that if touch sensible data are to be related to peace in the control method
Full sensitive data, then first therefrom extraction secure authentication information is encrypted again.
In step s 201, integrated control chip provides display drive signals to display device, and is obtained from touch sensing
Obtain inductive signal.In certain embodiments, in addition to touch sensing, integrated control chip can connect various other sensings
Device, in this case integrated control chip can also obtain sensor type while inductive signal is obtained from sensor,
So as to identification sensor type.Such as connect different types of sensor, Yi Jiji by the different pins of integrated control chip
The mark of sensor is obtained in pin.In alternate embodiments, sensor will identify and inductive signal be sent to together it is integrated
Control chip.
Then, subsequent step S102 to S110 is continued to execute in integrated control chip internal.
In step S202, inductive signal is processed into touch sensible data.For example, can be by integrated control chip
Touch-control logic module docking collection of letters RX is amplified and analog-to-digital conversion, to produce the touch sensible data.
In step S203, judge whether that receiving encrypted transmission enables instruction, if it is, step S204 is performed, it is no
Then perform step S205.It can be that mainboard 410 produces that encrypted transmission, which enables instruction, such as the main control unit of mainboard 410 is relating to
And (such as PIN code verification scene in financial service) refers to integrated control chip offer encrypted transmission under the application scenarios of safety
Order, so that integrated control chip encrypts the sensed data provided.In the present embodiment, it can include and touch in encrypted transmission instruction
The correspondence (such as the form of the table of comparisons can be used) of position and secure authentication information is touched, corresponding mark can also be added
So that integrated control device can identify the table of comparisons.
In step S204, according to correspondence by the touch sensible data conversion into secure authentication information.For example,
The table of comparisons can be set according to the character position on safety keyboard, be sentenced according to the touch location carried in touch sensible data
Disconnected user touches which character on safety keyboard, and multiple characters combine in order forms PIN code.Certain disclosure
Embodiment not limited to this, the table of comparisons can be set according to full keyboard, can also can be defeated with checking information with high safety according to other
The mode entered is set, so that the processor of integrated control device can identify that safety input by user is tested according to the table of comparisons
Demonstrate,prove information.If successfully extracting secure authentication information, perform step S205 and encrypted, if from touch sensible data
In fail to extract secure authentication information, for example user does not touch safety keyboard, then it is general to carry out to perform step S206
Logical touch control operation.
In step S205, secure authentication information is encrypted, then performs step S105.Such as in integrated control chip
CPU can call the encipheror in flash memory that secure authentication information is encrypted.More than cipher mode includes but not limited to
In the cipher mode described in step S105.
In step S206, touch sensible data are exported.Integrated control chip can will be passed through by touch-controlling interface and be added
Close touch sensible data, secure authentication information and the main control unit that mainboard is supplied to without encrypted touch sensible data,
So that its follow-up security related operations or common touch control operation use.In certain embodiments, can be by different types of number
Integrated control chip exterior is sent to according to packing.The data that the step is packed include above-mentioned by encrypted and without adding
Any of close data.Data packing additional start bit and type identification before being for example included in data content, in number
According to additional stop bits and check bit after content.
The main control unit that these data will be sent on mainboard from the integrated control chip of display screen, such as primary processor,
Handled by operating system to realize acquisition data content.Operating system according to type identification can be with identification data content through
Encrypted secure authentication information is crossed still without encrypted touch sensible data.The main control unit of electronic equipment is receiving
From after the not encrypted touch sensible data of integrated control chip, such as image scaling, web page browsing are carried out according to it
Etc. common touch control operation, after receiving by encrypted secure authentication information, safety verification is carried out according to it.For example,
Main control unit can compare the secure authentication information of acquisition to determine whether unanimously with the safety verification prestored template,
If it is decision verification success, otherwise decision verification failure.
By identifying that sensitive information is encrypted, on the one hand mitigate the burden of main control unit, on the other hand can be further
Security is improved, eliminates the data not comprising sensitive information, avoids it by mistakenly encryption and decryption, improves the standard of safety verification
True property and treatment effeciency.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed, or further include as this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there are other identical element in process, method, article or equipment including the key element.
According to the embodiment of the present invention as described above, these embodiments do not have all details of detailed descriptionthe, not yet
It is only the specific embodiment to limit the invention.Obviously, as described above, can make many modifications and variations, including but
It is not limited to change to the local structure of circuit, the replacement to the type or model of component.This specification is chosen and is specifically retouched
These embodiments are stated, are in order to preferably explain the principle of the present invention and practical application, so that technical field technology people
Member can be used using modification of the invention and on the basis of the present invention well.The present invention is only by claims and its whole
The limitation of scope and equivalent.
Claims (11)
1. a kind of integrated control device, including：
Display unit, for providing display drive signals to display device；
Touch control unit, for receiving inductive signal from touch sensing, and is converted into touch sensible number by the inductive signal
According to；
Processor, for control display unit and touch control unit, judges whether that receiving encrypted transmission enables instruction, if so,
It will then export after the touch sensible data encryption, otherwise export the touch sensible data in the form of non-encrypted.
2. integrated control device according to claim 1, it is characterised in that the encrypted transmission is enabled in instruction comprising tactile
Touch the correspondence of position and secure authentication information, the processor is additionally operable to before encryption according to the correspondence from institute
State touch sensible extracting data secure authentication information.
3. integrated control device according to claim 2, it is characterised in that the secure authentication information includes personal identify
Password PIN code.
4. integrated control device according to claim 1, it is characterised in that the touch control unit includes：
Touch-control logic module, for providing touch-control drive signal and receiving touch-control sensing signal, and the received touch-control sense of docking
Induction signal is amplified and digital-to-analogue conversion, to produce touch sensible data；And
Touch-controlling interface, for touch sensible data or secure authentication information to be sent to the outside of the integrated control device.
5. integrated control device according to claim 1, it is characterised in that the display unit be used for drive liquid crystal display or
AMOLED display screens.
6. integrated control device according to any one of claim 1 to 5, it is characterised in that the integrated control device
For one single chip.
7. a kind of display system, including：
Display device, for showing image according to display data；
Touch sensing, inductive signal is produced for being touched according to user；
Integrated control device according to any one of claim 1 to 6.
8. a kind of electronic equipment, including：
Display system according to claim 7；And
Main control unit, instruction is enabled for sending encrypted transmission to the display system under safety-related application environment, and
Safety verification is carried out according to the encrypted touch sensible data of process from display system.
9. a kind of control method performed in integrated control device according to any one of claim 1 to 6, including：
Display drive signals are provided to display device, and receives inductive signal from touch sensing and turns the inductive signal
Change touch sensible data into；
Judge whether that receiving encrypted transmission enables instruction, if it is, will be exported after the touch sensible data encryption, otherwise
The touch sensible data are exported in the form of non-encrypted.
10. control method according to claim 9, it is characterised in that the encrypted transmission is enabled in instruction comprising touch
Position and the correspondence of secure authentication information, the control method further include：Before encryption according to the correspondence from
The touch sensible extracting data secure authentication information.
11. control method according to claim 10, it is characterised in that the secure authentication information includes PIN code.
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