CN209132729U - It is erasable to store liquid crystal notebook - Google Patents

Abstract

The utility model disclose it is a kind of it is erasable store liquid crystal notebook, include that module, liquid crystal track preserving module, wireless transmitter module and wireless receiving module are removed in MCU, power supply module, liquid crystal display panel, bluetooth module, storage module, charging and charging detecting model, liquid crystal track；The power supply module, liquid crystal display panel, bluetooth module, storage module, charging and charging detecting model, liquid crystal track remove module, liquid crystal track preserving module and wireless transmitter module and are all connected with MCU, the liquid crystal track removes module and connects liquid crystal display panel, which connects wireless transmitter module.Liquid crystal notebook is formed using modules by cooperation, it uses low in energy consumption, remove module in low-cost re-erable liquid crystal track, it avoids high power consumption and brings being not easy to be used for a long time and increase electronic power thus and making troubles the property taken for product, and it is low in cost, display and save that person's handwriting mode is simple, to bring feasibility for similar the universal of writing device.

Description

It is erasable to store liquid crystal notebook

Technical field

The utility model relates to electronics field technology, refer in particular to a kind of erasable store liquid crystal notebook.

Background technique

Currently, well known electromagnetic form written handwriting recording mode includes tangible liquid crystal handwriting record, magnetic powder person's handwriting note Record etc..Magnetic powder handwriting record is to keep magnetic powder directional characteristic to reach a kind of record of pen trace after writing using magnetic powder characteristic Form.Liquid crystal is a kind of state of matter between a solid and a liquid, and the mobility of existing liquid has to a certain extent again The order of crystal can be divided into nematic, smectic type, cholesteric three categories, wherein cholesteric according to the arrangement mode of molecule Liquid crystal is in flat, arrangement stratification, and molecule is parallel to each other in layer, and molecular long axis is parallel to layer plane, the molecular long axis of different layers Direction varies slightly, and the normal direction along layer is arranged in helicoidal structure.The pitch of thread of cholesteric liquid crystal is about 300nm, and can The light-exposed same magnitude of wavelength, this spiral away from can with ambient temperature, current field condition, liquid crystal distortion power difference and change, because The method of this available adjustment screw pitch is modulated ambient light.The prior art utilizes optical activity, the selectivity, light of cholesteric liquid crystal The novel liquid crystal Display panel device that the feature developments such as scattering, circular polarization dichroism go out, hand writing display device is exactly to be utilized A kind of display device that cholesteryl liquid crystal bistable characteristic is developed, so-called bistable state refer to that not needing extra electric field exists Two stable states: plane state and Focal conic state, two stable states can be kept in the case where no extra electric field stablize, show respectively Illuminated state or dark-state, when by certain pressure, the liquid crystal molecule arrangement of force part changes, and generates Bragg reflection effect It answers, records the person's handwriting of pressure, display screen only needs faint electric current when driving and refreshing, and power consumption is extremely low.

Tangible form liquid crystal handwriting record is that after liquid crystal display panel bottom reception device receives person's handwriting signal, person's handwriting is believed Number it is converted into relative coordinate, shows a kind of function of person's handwriting on the screen according to person's handwriting coordinate by CPU control liquid crystal display panel.

In existing handwriting record mode, touch screen liquid crystal handwriting record is added to need external touch, expensive, function It consumes larger, does not have the feasibility for a wide range of interior popularization as single-minded writing device.And magnetic powder recording mode then can only For disposable recording, it is difficult to preservation person's handwriting for a long time.

Summary of the invention

In view of this, the utility model is in view of the existing deficiencies of the prior art, main purpose is to provide a kind of erasable Liquid crystal notebook can be stored, cheap, power consumption very little, can be easy to use for a long time and the devices such as mobile phone, plate are mutual in real time Even.

To achieve the above object, the utility model is using following technical solution:

One kind is erasable to store liquid crystal notebook, includes MCU, power supply module, liquid crystal display panel, bluetooth module, storage Module, liquid crystal track preserving module, wireless transmitter module and nothing are removed in module, charging and charging detecting model, liquid crystal track Line receiving module；The power supply module, liquid crystal display panel, bluetooth module, storage module, charging and charging detecting model, liquid crystal track It removes module, liquid crystal track preserving module and wireless transmitter module and is all connected with MCU, which removes module and connect liquid crystal surface Plate, the wireless receiving module connect wireless transmitter module.

Preferably, it includes power supply unit, microcomputer control unit, anti-error erasing list that module is removed in the liquid crystal track Member, voltage conversion unit, regulator control block and wiping screen output unit；The power supply unit connects microcomputer control unit and anti-error Unit is wiped, which connects microcomputer control unit, which connects voltage conversion unit, the wiping Shield output unit and connects regulator control block.

Preferably, the microcomputer control unit includes microcomputer chip U1, no peripheral component, the microcomputer chip U1 has VDD and VSS, more than two data switching ports, the PWM port of one or more and a switch port defined, micro- The anode of the VDD connection power supply unit of computer chip U1, the ground of the VSS connection power supply unit of microcomputer chip U1, micro computer core The ground of the PA5 connection power supply unit of piece U1；The microcomputer chip U1 further includes exporting to give voltage conversion control unit signal T1 port.

Preferably, the voltage conversion unit includes triode Q1, driving capacitor C2, driving resistance R2, inductance L1；It is described The collector of triode Q1 connects inductance L1, and emitter connects power ground, base stage connection driving resistance R2 and driving capacitor C2, leads to Cross the PWM port of R2, C2 connection microcomputer chip U1.

Preferably, the voltage conversion unit further includes rectifier diode D2, filter capacitor C1, the rectifier diode D2 anode one end connect negative pole end with inductance L1 and triode Q1 collector and connect with the one end filter capacitor C1, with filter capacitor C1 It is connected to T7 together, the one end the inductance L1 connects D2 anode and triode Q1 emitter, and the other end connects T5.

Preferably, the regulator control block includes pressure-limit current-limit resistance R1 and zener diode D1, the pressure-limit current-limit The one end resistance R1 connects zener diode D1, and one end connects T8, is connected to voltage conversion unit；The one end the zener diode D1 connects Power ground is connect, one end connection T9 is connected to wiping screen output unit.

Preferably, the anti-error erasing unit is made of toggle switch P2, one end connectivity port of the toggle switch P2 T3 is connected to microcomputer control unit, and other end connectivity port T2 is connected to power supply unit.

Preferably, the wiping screen output unit is made of electrode T10, T11, and the electrode T10 is connected to liquid-crystal composite membrane An electrode on, and be connected to regulator control block, the electrode T11 is connected on another electrode of liquid-crystal composite membrane, And it is connected to the ground.

The utility model has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technology Known to scheme:

Liquid crystal notebook is formed using modules by cooperation, it is low-cost to wipe repeatedly it uses low in energy consumption Module is removed in the liquid crystal track write, and avoid that high power consumption brings product is not easy to be used for a long time and increase thus electronic power band Carry out not portability, and low in cost, display and save that person's handwriting mode is simple, so that universal bring for similar writing device can Row.

For the structure feature and effect for more clearly illustrating the utility model, come with reference to the accompanying drawing with specific embodiment pair The utility model is described in detail.

Detailed description of the invention

Fig. 1 is the structural principle block diagram of the preferred embodiment of the utility model；

Fig. 2 is the line map of wireless receiving module in the preferred embodiment of the utility model；

Fig. 3 is the structural principle block diagram that module is removed in liquid crystal track in the preferred embodiment of the utility model；

Fig. 4 is the physical circuit schematic diagram of power supply unit in the preferred embodiment of the utility model；

Fig. 5 is the physical circuit schematic diagram of anti-error erasing unit in the preferred embodiment of the utility model；

Fig. 6 is the physical circuit schematic diagram of microcomputer control unit in the preferred embodiment of the utility model；

Fig. 7 is the physical circuit schematic diagram of voltage conversion unit in the preferred embodiment of the utility model；

Fig. 8 is the physical circuit schematic diagram of regulator control block in the preferred embodiment of the utility model；

Fig. 9 is the physical circuit schematic diagram that screen output unit is wiped in the preferred embodiment of the utility model.

Description of drawing identification.

11, MCU 12, power supply module

13, liquid crystal display panel 14, bluetooth module

15, storage module 16, charging and charging detecting model

20, module 21, power supply unit are removed in liquid crystal track

22, microcomputer control unit 23, anti-error erasing unit

24, voltage conversion unit 25, regulator control block

26, screen output unit 30, liquid crystal track preserving module are wiped

40, wireless transmitter module 50, wireless receiving module.

Specific embodiment

It please refers to shown in Fig. 1 to Fig. 9, that show the specific structures of the preferred embodiment of the utility model, include MCU 11, power supply module 12, liquid crystal display panel 13, bluetooth module 14, storage module 15, charging and charging detecting model 16, liquid crystal Remove module 20, liquid crystal track preserving module 30, wireless transmitter module 40 and wireless receiving module 50 in track.

The power supply module 12, liquid crystal display panel 13, bluetooth module 14, storage module 15, charging and charging detecting model 16, liquid Brilliant track removes module 20, liquid crystal track preserving module 30 and wireless transmitter module 40 and is all connected with MCU11, which removes Module 20 connects liquid crystal display panel 13, which connects wireless transmitter module 40.

The continuous processing and preservation processing, MCU11 that the MCU11 is used to identify the handwriting can calculate emission source coordinate position person's handwriting Method is illustrated as continuous person's handwriting；The power supply module 12 is made of lithium battery, power supply circuit and USB charging jack, and power supply module 12 is MCU11, wireless receiving module 50, wireless transmitter module 40, storage module 30, reseting module (not shown), bluetooth module 14, The modules such as liquid crystal display panel 13 provide power supply；The bluetooth module 14 is connect for MCU11 with devices such as mobile phone, plates, mobile phone, plate It is upper available and show person's handwriting, and identify the handwriting and carry out image conversion processing, at the same the devices such as mobile phone, plate can to the present apparatus into Row parameter setting and data interaction；The charging and charging detecting model 16 are made of charging circuit, charging detecting circuit, for giving Lithium battery charging in power supply module 12；Module 20 is removed in the liquid crystal track can control removing and the guarantor of 13 person's handwriting of liquid crystal display panel It deposits, and clear signal is notified into MCU11 simultaneously；The liquid crystal track preserving module 30 saves on current screen for notifying MCU11 All person's handwritings are simultaneously stored into storage module 15 with document form；The wireless receiving module 50 is used for the record of person's handwriting, energy Receive 40 electric signal of wireless transmitter module and can localizing emission source relative coordinate position, wireless receiving module 50 is from wireless transmission Module 40 obtains power supply and active circuit, receives signal, and mobile phone can control the increasing for saving person's handwriting file, the processing function deleted, changed, The tip of the brushstyle of a writing or painting is not necessarily to power supply, directly obtains electric energy work from wireless transmitter module 40.

Specifically, the liquid crystal track remove module 20 include power supply unit 21, it is microcomputer control unit 22, anti-error It wipes unit 23, voltage conversion unit 24, regulator control block 25 and wipes screen output unit 26；The power supply unit 21 connects micro- electricity Brain control unit 22 and anti-error erasing unit 23, the voltage conversion unit 24 connect microcomputer control unit 22, pressure stabilizing control Unit 25 connects voltage conversion unit 24, which connects regulator control block 25.

The power supply unit 21 provides 1.8V-3.3V operating voltage；The microcomputer control unit 22 is for controlling each unit association Adjust work；The picture that the anti-error erasing unit 23 is used to prevent mistake from removing written record；The voltage conversion unit 24 is used for will Supply voltage is converted into required initial high pressure；The regulator control block 25 is used to export the accurate voltage of pulse of matching liquid crystal display Shield output unit 26 to wiping；26 liquid crystal display panel 13 of wiping screen output unit connection, entire screen written information is removed, and reaches multiple Write function.

As shown in fig. 6, the microcomputer control unit 22 includes microcomputer chip U1, no peripheral component, micro- electricity Brain chip U1 has VDD and VSS, more than two data switching ports, the PWM port of one or more and a switch defined Port, the anode of the VDD connection power supply unit of microcomputer chip U1, the ground of the VSS connection power supply unit of microcomputer chip U1 are micro- The ground of the PA5 connection power supply unit of computer chip U1；The microcomputer chip U1 further includes output to voltage conversion control unit The t1 port of signal.

As shown in fig. 7, the voltage conversion unit 24 includes triode Q1, driving capacitor C2, driving resistance R2, inductance L1；The collector of the triode Q1 connects inductance L1, and emitter connects power ground, base stage connection driving resistance R2 and driving electricity Hold C2, the PWM port of microcomputer chip U1 is connected by R2, C2.The voltage conversion unit 24 further include rectifier diode D2, Filter capacitor C1, described rectifier diode D2 anode one end connect negative pole end and filtering with inductance L1 and triode Q1 collector The connection of the one end capacitor C1, is connected to T7 together with filter capacitor C1, and the one end the inductance L1 connects D2 anode and triode Q1 hair Emitter-base bandgap grading, the other end connect T5.

As shown in figure 8, the regulator control block 25 includes pressure-limit current-limit resistance R1 and zener diode D1, the pressure limiting The one end current-limiting resistance R1 connects zener diode D1, and one end connects T8, is connected to voltage conversion unit；The zener diode D1 mono- End connection power ground, one end connection T9 are connected to wiping screen output unit.

As shown in figure 5, the anti-error erasing unit 23 is made of toggle switch P2, one end connection of the toggle switch P2 Port T3 is connected to microcomputer control unit, and other end connectivity port T2 is connected to power supply unit.

As shown in figure 9, the wiping screen output unit 26 is made of electrode T10, T11, it is multiple that the electrode T10 is connected to liquid crystal On an electrode for closing film, and it is connected to regulator control block, the electrode T11 is connected to another electrode of liquid-crystal composite membrane On, and be connected to the ground.

And in Fig. 2: left side part A is the circuit antenna part trace-diagram of original wireless receiving module, the right part B For original wireless receiving module circuit trace schematic diagram.

Red 1, orange 2 in figure, 3 three signal receiving antennas of yellow surround a rectangular area.Each color line surrounds Similar rectangular area is fixed, and the coordinate of translation 1/3, the line of third root color are analogized on the right of second color line.When transmitting signal Wherein when certain a part, MCU11 opens the signal value that three receiving antennas obtain emitting portion by timesharing, in red 1, orange 2, the signal value that 3 three regions of yellow the inside generates is different.The value generated in red 1 rectangular area, can fix Horizontal coordinate range A1；The value generated in 2 rectangular area of orange areas can fix horizontal coordinate range A2；In Huang The value generated in 3 rectangular area of color region can fix horizontal coordinate range A3.By the intersection of A1, A2, A3, can determine The horizontal relative coordinate of actual emission source.

Similarly in vertical area, the effect of similar horizontal zone being rotated by 90 ° can similarly go to push up actual emission source Vertically opposite coordinate.

After the level that determined, the coordinate of vertical area, MCU11 can be sent to and do respective handling.

The working principle that the present embodiment is described in detail is as follows:

The wireless transmitter module 40 is built-in in the present apparatus, is powered by 12 battery of power supply module, and pen is obtained when clicking Emit signal energy, and positions coordinate.The tip of the brushstyle of a writing or painting is not necessarily to additional power supply.

The liquid crystal display panel 13 is placed on during book shape dress sets, and places above-mentioned wireless receiving module 50 below.When pen is clicked, The trace of physics is recorded by erasable liquid crystal display panel 13, while the signal emitted is received by wireless receiving module 50, wireless receiving Module 50 is controlled by MCU11, and timesharing is opened reception signal antenna and determined a little by the intensity contrast of different location signal antenna Hit location point, MCU11 is kept the position that will change the time.When a person's handwriting generates, algorithm will be passed through by being saved scattered coordinate points Practice into continuous person's handwriting and is stored in storage module 15.When the user desires, these continuous person's handwritings can pass through bluetooth module 14 Transmission, show on terminal electronic device.To the process completing entire handwriting record and showing.

Under various application scenarios, the present apparatus has different application models, and detailed directions are as follows:

1, encryption mode can be set: 1.1, under encryption mode, all preservation documents can all be encrypted store.1.2, it encrypts Document under mode, when mobile phone terminal is read, requiring input password can read, edit.1.3, it when encryption mode is set, needs Input Crypted password.1.4, when unencryption, password is not necessarily to when reading.

2, before user is kept a diary with the device, diary mode can diary mode: settable document format: 2.1, be tuned into.Day The diary saved under note mode can keep a diary the time according to mobile phone acquisition, and weather conditions are attached in diary automatically；2.2, it has a meeting Mode: user is had a meeting with the device before record, can be tuned into meeting mode.Automatically the first row is set as session topic；2.3, careless Original text mode under draft mode, is removed non-manual preservation, is not otherwise saved；

3, entire writing process can dynamically track dynamic restoring function: be restored.

4, settable sound-recording function: 4.1, can record current speech.4.2, settable recording format.4.3, recording file name It is identical with current character record name.

5, a key sound prompt function: automatic casting can currently store number of pages, current electric quantity residue situation, currently and hand Machine connection.

6, fuselage scale indicates: 6.1, can conveniently measure.6.2, it can refer to when writing, so that text keeps horizontal.

7, it is automatically positioned writing function: being positioned using mobile phone, last time mobile phone is found to lose connection between manuscript copy The position that mobile phone positions when network is as memory area.

8, a key voice ID broadcast function: can a key broadcast voice ID, prevent multiple devices from obscuring user mutually.

9, lettering pen is detachable, forward and reverse exchange: 9.1, the anode of pen can directly be write on paper, be equivalent to conventional oil Property effect.9.2, the reversed of pen is directly write on liquid crystal display, is equivalent to writing pencil, no ink.

10, the manual setting page number: 10.1, can manual setting write the page number.10.2, it can sort to the page number of writing.

11, manual setting retrieval and remarks: 11.1, on mobile phone, brief introduction, text index, structure can be inputted to page is saved At catalogue.11.2, on mobile phone, preservation page can be indexed by brief introduction.

12, " whole book " is arranged: the scattered page number can be arranged to a book function, directly examined as unit of book when browsing Rope.

13, illustration function: page can be saved to current, is inserted into designated pictures and specified sound.

14, bookmark function in the page number: increase text bookmark in the page number, facilitate whole search.

15, background color and text color, text size: settable background color, text color are set.

16, the dynamics of pen is arranged: dynamics function is arranged in person's handwriting, and different writing physical strength effects are different.

17, a key removes function: a key removes the page number, whole book, the functions such as index.

The design focal point of the utility model is: forming liquid crystal notebook using modules by cooperation, it uses function Consume low, module is removed in low-cost re-erable liquid crystal track, avoid high power consumption bring product be not easy to it is long-term Using with increase electronic power thus and make troubles the property taken, and it is low in cost, it is simple to display and save person's handwriting mode, to be Similar the universal of writing device brings feasibility.

Technical principle of the utility model has been described above with reference to specific embodiments.These descriptions are intended merely to explain this reality With novel principle, and it cannot be construed to the limitation to scope of protection of the utility model in any way.Based on the explanation herein, Those skilled in the art, which does not need to pay for creative labor, can associate with other specific implementation modes of this utility model, These modes are fallen within the protection scope of the utility model.

Claims (5)

1. one kind is erasable to store liquid crystal notebook, it is characterised in that: include MCU, power supply module, liquid crystal display panel, bluetooth Module, liquid crystal track preserving module, wireless transmission mould are removed in module, storage module, charging and charging detecting model, liquid crystal track Block and wireless receiving module；The power supply module, liquid crystal display panel, bluetooth module, storage module, charging and charging detecting model, Liquid crystal track removes module, liquid crystal track preserving module and wireless transmitter module and is all connected with MCU, which removes module and connect Liquid crystal display panel is connect, which connects wireless transmitter module；The liquid crystal track remove module include power supply unit, Microcomputer control unit, anti-error erasing unit, voltage conversion unit, regulator control block and wiping screen output unit；The power supply list Member connection microcomputer control unit and anti-error erasing unit, the voltage conversion unit connect microcomputer control unit, the pressure stabilizing control Unit processed connects voltage conversion unit, which connects regulator control block；The regulator control block includes limit Current-limiting resistance R1 and zener diode D1 are pressed, described one end pressure-limit current-limit resistance R1 connects zener diode D1, and one end connects T8, It is connected to voltage conversion unit；The one end the zener diode D1 connects power ground, and one end connection T9 is connected to wiping screen output unit, institute It states anti-error erasing unit to be made of toggle switch P2, one end connectivity port T3 of the toggle switch P2 is connected to micro computer control list Member, other end connectivity port T2 are connected to power supply unit.

2. erasable as described in claim 1 store liquid crystal notebook, it is characterised in that: the microcomputer control unit packet Include microcomputer chip U1, no peripheral component, the microcomputer chip U1 have VDD and VSS, more than two data switching ports, The switch port of the PWM port of one or more and a definition, the anode of the VDD connection power supply unit of microcomputer chip U1, The ground of the VSS connection power supply unit of microcomputer chip U1, the ground of the PA5 connection power supply unit of microcomputer chip U1；Micro- electricity Brain chip U1 further includes exporting to the t1 port of voltage conversion control unit signal.

Erasable store liquid crystal notebook 3. as claimed in claim 2, it is characterised in that: the voltage conversion unit includes Triode Q1, driving capacitor C2, driving resistance R2, inductance L1；The collector of the triode Q1 connects inductance L1, and emitter connects Power ground, base stage connection driving resistance R2 and driving capacitor C2 are met, the PWM port of microcomputer chip U1 is connected by R2, C2.

4. erasable as claimed in claim 3 store liquid crystal notebook, it is characterised in that: the voltage conversion unit also wraps Include rectifier diode D2, filter capacitor C1, described rectifier diode D2 anode one end and inductance L1 and triode Q1 collector Connection negative pole end is connect with the one end filter capacitor C1, and T7 is connected to together with filter capacitor C1, and the one end the inductance L1 connects D2 Anode and triode Q1 emitter, the other end connect T5.

5. erasable as described in claim 1 store liquid crystal notebook, it is characterised in that: the wiping screen output unit is by electricity Pole T10, T11 composition, the electrode T10 is connected on an electrode of liquid-crystal composite membrane, and is connected to regulator control block, institute It states electrode T11 to be connected on another electrode of liquid-crystal composite membrane, and is connected to the ground.