CN102323849A - Dual-display mobile terminal - Google Patents
Dual-display mobile terminal Download PDFInfo
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- CN102323849A CN102323849A CN201110259105A CN201110259105A CN102323849A CN 102323849 A CN102323849 A CN 102323849A CN 201110259105 A CN201110259105 A CN 201110259105A CN 201110259105 A CN201110259105 A CN 201110259105A CN 102323849 A CN102323849 A CN 102323849A
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Abstract
The invention discloses a dual-display mobile terminal which comprises a main housing and an auxiliary housing that rotate mutually oppositely. The dual-display mobile terminal also comprises a CPU arranged in the main housing, an electronic ink screen and a liquid crystal display which are arranged on the auxiliary housing in a back-to-back manner, an electromagnetic plate arranged between the electronic ink screen and the liquid crystal display, wherein the electronic ink screen and the liquid crystal display are connected with the CPU so as to correspond to different display applications; the electromagnetic plate is connected with the CPU and used for detecting input track information and sending the input track information to the CPU; and the CPU is used for selecting the currently-used display and sending display data to the currently-used display. The dual-display mobile terminal has the advantages of low cost, good heat radiating effect, high stability and long service life.
Description
Technical field
The present invention relates to a kind of portable terminal, particularly, relate to a kind of double-display screen portable terminal.
Background technology
Electric ink screen (EPD) has clear superiorities such as reading with great visual angle, environmental protection, vision protection, super low-power consumption as studying up the display screen that electronic edition books, document are used.But ordinary electronic ink screen can only support 16 rank gray scales to show at present; Even its color saturation of high-end color electric ink screen is also far away not as good as LCD Panel; And the maximum shortcoming of electric ink screen is exactly that refresh rate is slow, can't satisfy the application demand that the user watches video, recreation, real-time, interactive class.
And the panel computer of being furnished with large-sized liquid crystal display (LCD) has begun to get into consumer electronics market as a kind of emerging portable mobile termianl; Compare panel computer with mobile phone and have higher handling property, more the picture effect of high-quality and good man-machine interaction mode; Has outstanding travelling performance and compare it, longer cruising time, the more outward appearance of fashion and the more application of diversification with common computer; But adopt the panel computer of LCDs carrying out the large volume document reading; There is the outstanding problem that power consumption is high, heating is big, stand-by time is short in it when application such as writing; Dig-in screen for a long time and can cause user's visual fatigue; Therefore in the function application facet not high to response time requirement, LCDs has been compared obvious deficiency with the electric ink screen.
Many in the market companies have released the double screen solution of portable mobile terminal; But its double screen that adopts is two LCDs mostly; The scheme or the product that have LCDs and electric ink screen simultaneously then seldom come out, and be existing at present and be described below with the approaching double screen portable terminal scheme of the present invention:
The CN201210266 patent discloses a kind of double-screen notebook structure; CN201392488Y discloses a kind of notebook computer.In these two parts of patents, all adopt two casings, LCDs and electric ink screen lays respectively on two casings, but this design is inconvenient to use, and shields when all realizing the electromagnetism handwriting functions when two, and two magnetic boards need be set.
Also having a kind of scheme is that complete machine only adopts a casing; The one side of casing is placed LCDs, and another side is placed the electric ink screen, adopts a processor to control two display screens respectively; Wherein CPU links to each other with the electric ink screen controller through USB interface; Image with control electric ink screen shows that the standard video interface links to each other with LCDs on the sheet of CPU employing simultaneously, thereby reaches two screen displays of a CPU control.The mainboard of complete machine and battery are sandwiched in the middle of two display screens; This equipment does not have physical keyboard, only adopts the electromagnetism handwriting device to carry out man-machine interaction; Fuselage interior has two magnetic boards, be close to respectively LCDs and electric ink the screen after, supply two display screens to manipulate.
Though this portable terminal has combined LCDs and electric ink screen; Realized the mutual supplement with each other's advantages of two kinds of screens, but it has following defective: adopt two magnetic boards to supply two display screens to use respectively, because the user does not need to use simultaneously two display screens; Once can only select one of which; So both increase the complete machine Material Cost, and can make the magnetic board utilization factor low again, be unfavorable for reducing fuselage thickness simultaneously; And this portable terminal can't add physical keyboard, can't feel literal import pathway fast preferably be provided for the user; This portable terminal be with system board and battery folder in the middle of two display screens, rather than be close to shell, will cause difficulty to the mainboard heat radiation like this, make heat in fuselage, accumulate, cause temperature to raise, influence product stability.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of with LCDs and electric ink screen combine, the double screen portable terminal of a shared magnetic board.
Double-display screen portable terminal of the present invention comprises counterrotating main case and subsidiary engine shell, and this double-display screen portable terminal also comprises: be arranged on interior system board of main case and the CPU on the mainboard; Be arranged on electric ink screen and LCDs on the subsidiary engine shell dorsad; Said electric ink screen all links to each other with CPU with LCDs, uses with the demonstration that correspondence is different; Be arranged on the magnetic board between electric ink screen and the LCDs; Said magnetic board links to each other with CPU, is used to detect input trajectory information and input trajectory information is sent to CPU; Wherein, CPU is used to select presently used display screen and sends video data to presently used display screen.
The used magnetic board of this double screen portable terminal is made up of induction zone and non-induction zone two parts: induction zone is made up of orthogonal transmitting coil and receiving coil.The magnetic board controller produces square wave; The input transmitting coil in the electromagnetic wave of the launching input writing pencil circuit, makes the interior antiresonant circuit of writing pencil produce resonance; The electromagnetic wave that resonance generates is received by the receiving coil of magnetic board, and the simulating signal that receives is admitted to the magnetic board controller.The size of induction zone should be measure-alike with the entire display screen curtain, makes writing pencil optional position on display screen move and can both be the perception of induction zone institute.Zone beyond the induction zone is non-induction zone; Be mainly used in and place magnetic board controller and peripheral circuit thereof; This processor is mainly used in the simulating signal on the receiving coil is carried out analog to digital conversion; Draw writing pencil accurate coordinates information through the digital signal that obtains after the conversion is carried out computing, and send to CPU.
In one embodiment, said magnetic board is two-sided non-shielding construction, and CPU has been after having selected presently used display screen, is the coordinate that meets presently used display screen with the track identification coordinate transform of this magnetic board.
In one embodiment; Be provided with in the non-induction zone of magnetic board respectively with main case in CPU the electric ink screen power supervisor, the LCDs power supervisor that link to each other, be used under the control of CPU, being respectively the electric ink screen and supply power with LCDs.The outside of electric ink screen power supervisor and LCDs power supervisor is provided with metallic shield.
In one embodiment, also be provided with the membrane keyboard that links to each other with CPU on the main case, when using LCDs, this membrane keyboard supplies user's inputting word information.
In one embodiment, the one side that the subsidiary engine shell is provided with the electric ink screen also is provided with one or more buttons, is used for the electric ink screen is operated.
In one embodiment, main case or subsidiary engine shell are provided with the range sensor that links to each other with CPU, and CPU judges the position of subsidiary engine shell facies for main case through this range sensor, and what further confirm current use is electric ink screen or LCDs.
In one embodiment; This portable terminal also comprises the rotating shaft web member, and main case and subsidiary engine shell are provided with a groove on interconnective side, is provided with hollow rotating shaft on two sidewalls of each groove; One end of hollow rotating shaft is fixed on the sidewall; The other end inserts and is arranged in the rotating shaft web member in the groove, thereby main case and subsidiary engine shell are rotatably connected, and hollow rotating shaft also is arranged with rubber ring outward.
In another embodiment; This portable terminal also comprises the rotating shaft web member, and main case and subsidiary engine shell are provided with a lug boss on interconnective side, is provided with hollow rotating shaft on two sidewalls of each lug boss; One end of hollow rotating shaft is fixed on the sidewall; The other end inserts in the rotating shaft web member, thereby main case and subsidiary engine shell are rotatably connected, and hollow rotating shaft also is arranged with rubber ring outward.
In one embodiment, the connecting line between main case and the subsidiary engine shell gets in the rotating shaft web member through the hollow rotating shaft of a casing among main case and the subsidiary engine shell, and passes through the hollow rotating shaft of another casing.
In one embodiment, the arranged outside at said rotating shaft web member has the writing pencil slot.Be provided with the style of writing switch that is connected with CPU in this writing pencil slot, when writing pencil was put into the writing pencil slot, the style of writing switch closure also sent the low level look-at-me to CPU, and CPU closes magnetic board according to this low level look-at-me; When writing pencil was taken out in the writing pencil slot, the style of writing switch broke off and sends the high level look-at-me to CPU, and CPU opens magnetic board according to this high level look-at-me.
Double-display screen portable terminal of the present invention has the function of panel computer, notebook computer and electric paper book simultaneously concurrently.And only use a magnetic board, and reduced cost, saved the fuselage interior space; Because circuit board is arranged on separately in the casing, thereby radiating effect is better, has improved the stability of system; The introducing of membrane keyboard has promoted user's use experience; The two shaft connecting modes that adopt between two casings make the user to switch between two display screens easily, and have prolonged the serviceable life of the connecting line between two casings.
Description of drawings
Fig. 1 is the perspective view of double-display screen portable terminal of the present invention;
Fig. 2 is the structural representation of the Circuits System of double-display screen portable terminal of the present invention;
Fig. 3 is the exploded view of interior each parts of subsidiary engine shell of double-display screen portable terminal of the present invention;
Fig. 4 is the synoptic diagram that double-display screen portable terminal of the present invention is 180 ° of expansion;
Fig. 5 is the local enlarged diagram of the twin shaft syndeton of double-display screen portable terminal of the present invention;
Fig. 6 is the local enlarged diagram of another kind of scheme of the twin shaft syndeton of double-display screen portable terminal of the present invention.
Embodiment
Hereinafter will be explained technical scheme of the present invention through preferred implementation.
Fig. 1 is the perspective view of double-display screen portable terminal of the present invention.As shown in Figure 1, whole fuselage comprises main case 101 and subsidiary engine shell 102 two parts altogether.For reducing fuselage weight, reduce influence simultaneously to the shielding of fuselage interior aerial signal, two casing materials all should adopt plasticity good engineering plastics.Wherein be provided with mainboard and some other components and parts (like power supply, storer, WIFI communication facilities, audio & video equipment etc.) in the main case 101, mainboard is provided with CPU (central processing unit); And subsidiary engine shell 102 is provided with LCDs 104, magnetic board 117 and electric ink screen 103 (can adopt flexibility or inflexibility electric ink screen); Wherein, Magnetic board 117 is to be two-sided non-shielding construction; Magnetic board that can two-sided identification, LCDs 104 are applicable to that non-text class uses (for example: refresh rates such as video, recreation require to use faster), and electric ink screen 103 is applicable to that then the text class (for example: the slower application of refresh rate such as document reading) uses.LCDs 104 shields 103 back-to-back placements with electric ink; Magnetic board 117 is clipped in the middle of two screens; And link to each other with CPU, being used to detect input trajectory information and input trajectory information is sent to CPU, magnetic board is two-sided non-shielding construction; Be magnetic board that can two-sided identification, timesharing supplies two screens to carry out operations such as hand-written, control.Because two screens are to be used for difference in functionality, so the user once only can adopt a display screen, two screens need not to carry out simultaneously the picture refreshing action.When a screen refreshes; Another screen should be in dormant state, and therefore, CPU selects presently used display screen and sends video data to presently used display screen; And; The operation that the writing pencil motion track information that CPU also receives through magnetic board comes judges to carry out is carried out function corresponding and is handled, and on display screen, carries out Display Realization.Main case 101 is connected through rotating shaft web member 107 with subsidiary engine shell 102, thereby makes main case 101 and subsidiary engine shell 102 can relative to each other carry out 360 ° rotation, and this connected mode will further describe hereinafter.
In Fig. 1, subsidiary engine shell 102 fronts (promptly being provided with a side of electric ink screen 103) can be added one or more buttons 108, is used for the electric ink screen is carried out control operation.Button 108 can be the mechanical key identical with the casing material.Generally speaking, be to guarantee that the basic functions such as document reading of electric ink screen 103 are used, minimumly should lay 4 function keys, wherein two key is confirmed in a conduct as page turning key, one is return key, be used for electric paper book page turning, operation such as return.Keypress function can suitably increase, but final function setting should reach following purpose: the user does not use time writer, only depends on subsidiary engine shell 102 positive buttons 108 can accomplish the major function operation of electric ink screen 103.These four buttons are corresponding with the non-induction zone of magnetic board 117.
In Fig. 1, also be provided with membrane keyboard 120 on main case 101 fuselages, this membrane keyboard 120 is arranged on and LCDs 104 positive relative positions; Adopt high-grade medical grade silicone material, it has good rebound characteristics, quiet knock noiseless; Soft-touch is comfortable; Feel is warm, and volume is slim, is fit to very much ultrathin mobile terminal equipment and uses.Among the present invention this membrane keyboard 120 is passed through adhesive securement at main case 101 upper surfaces; Rotation subsidiary engine shell 102; Make when the back side and main case 101 fronts of subsidiary engine shell 102 are 120 ° of left and right sides angles; This moment, LCD Panel 104 was formed a miniature notebook system with membrane keyboard 120, and the user can pass through membrane keyboard 120 quick inputting word informations.Rotate to main case 101 back sides and work as subsidiary engine shell 102, when complete machine was used as the panel computer use, then system closed membrane keyboard 120 automatically, prevented the false triggering operation.For convenient electromagnetic plate investigative range can evenly cover entire display screen, main case 101 can be made identical rectangle with subsidiary engine shell 102 cross sectional shapes, and thickness is identical; If relatively pay attention to complete machine symmetry aesthetic property, can consider all to do wedgewise, the thickness difference of thickness and thinnest part is unsuitable excessive, guarantees that as far as possible the magnetic board investigative range can evenly cover entire display screen.Fig. 2 is the structural representation of the Circuits System of double-display screen portable terminal of the present invention.As shown in Figure 2, total system is controlled by high-performance central processing unit (CPU), and this processor requirement possesses the ability of supporting LCDs 104 and electric ink screen 103.Storer in the total system, power supply managing unit, audio & video equipment and WIFI communication facilities and common embedded device are similar, and these equipment all can be positioned at main case.
Hereinafter shows that to the timesharing of electric ink screen and LCDs control describes:
The induction sensitivity setting of 117 pairs of writing pencils of magnetic board can not be excessive or too small; Too small meeting makes magnetic board 117 can't perceive writing pencil 113 motion tracks; Excessively then be easy to generate false triggering operation; So the sensitivity of magnetic board 117 should be adjusted in the OK range, it can just be perceived be positioned at the magnetic field that 1mm-10mm place, display screen top writing pencil 113 nibs produce.When perceived distance was made as 1mm, its false triggering probability was very low, but can not realize that unsettled the streaking of writing pencil is page-turnable or the effect that triggers the menu function key, only can realize handwriting functions; When perceived distance is made as 10mm, the unsettled triggering effect of realization writing pencil that can be outstanding, but the false triggering rate can be very high.Perceived distance is made as 5mm then can realizes the unsettled triggering effect of good writing pencil, can keep lower false triggering rate again, preferentially adopt this distance value
Supply two screens to use owing to magnetic board 117 needs timesharing, which screen what therefore be necessary definite current use is.CPU is through being installed in miniature range sensor 109 on main case 101 or the subsidiary engine shell 102 (in the embodiment of Fig. 4; Range sensor 109 is installed in the back side of subsidiary engine shell 102) judge the position of subsidiary engine shell facies for main case, and what further confirm the current use of user is LCDs 104 or electric ink screen 103.Range sensor 109 links to each other with CPU and himself need send the invisible light of a certain frequency, after running into barrier reflection, can be received by the photodiode on the range sensor 109, judges the distance of himself and barrier according to receiving light intensity.When the user is covered subsidiary engine shell 102 on main case 101; Prepare to use electric ink to shield at 103 o'clock; The main case 101 that the light that the range sensor 109 at subsidiary engine shell 102 back sides sends can be pressed close to reflects back, and reflective light intensity surpasses preset value, and this moment, range sensor 109 can send look-at-me to CPU; Make CPU know that the employed screen of user is an electric ink screen 103; Automatically close LCDs 104 display modules immediately, the display message before will closing simultaneously on the LCDs 104 is preserved, and after opening LCDs 104 again, still can reduce the display image of last time.When closing LCDs 104; CPU need be that the left-right symmetric conversion is carried out at the center with magnetic board 117 vertical axis with the track identification coordinate of magnetic board 117; Originally magnetic board 117 trajectory coordinates that met 104 application of subsidiary engine shell 102 back side LCDs are met the coordinate that the front electric ink shields 103 application to furnishing, and the track that makes writing pencil 113 above electric ink screen 103, move is consistent with the track that electric ink shields 103 demonstrations.
Otherwise; When the user rotates to main case 101 back sides with subsidiary engine shell 102; Prepare when panel computer is used, range sensor 109 tops are with clear, and the light that it sent will can not be reflected; CPU then knows that according to the result of detection of range sensor 109 screen that the user uses is LCDs 104; Then system closes electric ink screen power supervisor automatically, and demonstration is switched to LCDs 104, the image frame of being preserved before recovering automatically simultaneously to close last time; And is that the left-right symmetric conversion is carried out at the center with the track identification coordinate of magnetic board 117 with magnetic board 117 vertical axis, the coordinate that the LCDs 104 that magnetic sheet 117 trajectory coordinates is become again meet subsidiary engine shell 102 back sides is used.
Fig. 3 is the exploded view of interior each parts of subsidiary engine shell of double-display screen portable terminal of the present invention; LCDs 104 is positioned at topmost (display surface up); The centre is a magnetic board 117; Be electric ink screen 103 (display surface down) bottom, with LCDs 104, magnetic board 117 bonds together with electric ink screen 103 through double faced adhesive tape; Wherein LCDs 104 will overlap with the induction zone of magnetic board 117 with the viewing area of electric ink screen 103 in vertical direction, to guarantee all to carry out hand-written operation Anywhere in the viewing area.In addition; Can in the middle of the non-induction zone of magnetic board 117, post the one side of LCDs 104 and add electric capacity navigation key 105 as required; This navigation key is communicated by letter with CPU through serial bus; Can stir up and down LCDs 104 display pages, ability fill order, double-click are user-friendly simultaneously.
Owing to lay two display screens, magnetic board 117, electric capacity navigation key 105 and four function keys 108 in the subsidiary engine shell 102 simultaneously; Its data all need be connected with mainboard through rotating shaft with lines such as power supplys; The structural design difficulty is bigger; Too much data and power lead will influence the rotation of rotating shaft; Therefore the non-induction zone with magnetic board 117 1 side minor faces prolongs, and with LCDs power supervisor and electric ink shield power supervisor and navigation key 105, button 108 is placed in this non-induction zone, only essential clock line, data line and control line and two main power lines are linked to each other with mainboard; Both reduce connecting line quantity, reduced the electromagnetic interference (EMI) between each line simultaneously again.Because LCDs 104 is bigger with the power supervisor switching noise of electric ink screen 103, therefore should on these two power supervisors, add radome, simultaneously planar isolated reduces the radiation interference to magnetic board 117 induction zones.The internal connection line of double-display screen portable terminal of the present invention preferably adopts Du Pont's line; But because Du Pont's line can not directly directly link to each other with FPC (flexible PCB) interface line that electric ink shields on 103 with LCDs 104; So need carry out interface conversion; Used FPC fixed interface seat 116 all is placed on the right side edge place of magnetic board 117 induction zones; The FPC interface line of LCDs 104 with electric ink screen 103 is connected on this fixed interface seat 116, and the power supervisor of LCDs 104 on the magnetic board 117 and electric ink screen 103 is two screen power supplies through the FPC interface line directly, and the clock line on the FPC interface line, data line and control line then are forwarded to Du Pont's line interface 122 through the cabling at magnetic board edge; And link to each other with mainboard through Du Pont's line, thereby being electrically connected of realization subsidiary engine shell and main case.
In another embodiment; Main case and subsidiary engine shell are provided with a lug boss on interconnective side, as shown in Figure 6, have a rotating shaft web member respectively on two sidepieces of lug boss; And be provided with hollow rotating shaft on two sidewalls of each lug boss; One end of hollow rotating shaft is fixed on the sidewall, and the other end inserts the rotating shaft web member, thereby main case and subsidiary engine shell are rotatably connected.In this embodiment; Du Pont's line between main case and the subsidiary engine shell also can get into through the hollow rotating shaft of a casing in the rotating shaft web member; Hollow rotating shaft from another casing passes again; Thereby make Du Pont's line neither influence screen rotation, can prolong Du Pont's line serviceable life simultaneously again, be unlikely to because the screen number of revolutions too much causes signal wire to fracture.
In order to make two casings keep the angle of user's rotation constant, need in all metal hollow rotating shafts 121, install rubber ring additional, the outer shroud of this rubber ring is adhesively fixed on rotating shaft web member or the rotating shaft web member; 121 of metal hollow rotating shafts penetrate ring in the rubber ring; And can rotate, but, cause the moment of torsion of rotating shaft to increase because the friction of rubber ring and metal hollow rotating shaft 121 is very big at interior ring; Make subsidiary engine shell 102 free not to be rotated around axle; Need to rotate under external force, thereby the angle that makes two casings can keep the user to rotate is constant, realizes miniature notebook function.
Portable terminal of the present invention has the function of panel computer, notebook computer and electric paper book simultaneously concurrently.The present invention adopts main case to add the structural design pattern of subsidiary engine shell; With LCDs and back-to-back being placed in the subsidiary engine shell of electric ink screen; Be put into two screen centres with one for the magnetic board of two-sided non-shielding construction simultaneously; This method can solve the problem of the time sharing shared magnetic board of two screens, compares with the scheme that each screen that adopts before respectively is equipped with an electromagnetic screen and greatly reduces cost, has also saved the fuselage interior space simultaneously.
Main case inside is used to lay circuit board and battery; Because the plastic casing of main case is all pressed close on the two sides of circuit board; Circuit board is clipped in scheme in the middle of two screens to compare radiating effect better before; Prevent the accumulation of heat at inner fuselage, cause system's fluctuation of service, the membrane keyboard of main case upper surface installation simultaneously can bring better information input feel to the user.
The two shaft connecting modes that adopt between main case and the subsidiary engine shell make the subsidiary engine shell to carry out 360 ° of rotations around main case, make the user between two display screens, to switch.The data bus connection employing between the mainboard of subsidiary engine shell and main case simultaneously is connected from Du Pont's line that hollow rotating shaft passes; When the subsidiary engine shell in rotary course; Du Pont's line does not have crooked than wide-angle; Thereby prolonged the serviceable life of Du Pont's line greatly, simultaneously can rotation cause difficulty to casing because of the existence of Du Pont's line yet.
Need to prove that at last the above is merely preferred embodiments of the present invention, rather than to the qualification of technical scheme of the present invention, anyly be equal to replacement or corresponding improvement, still within protection scope of the present invention what technical characterictic of the present invention was done.
Claims (12)
1. double-display screen portable terminal, comprising: counterrotating main case and subsidiary engine shell is characterized in that this double-display screen portable terminal also comprises:
Be arranged on the CPU in the main case;
Be arranged on electric ink screen and LCDs on the subsidiary engine shell dorsad; Said electric ink screen all links to each other with CPU with LCDs, uses with the demonstration that correspondence is different;
Be arranged on the magnetic board between electric ink screen and the LCDs; Said magnetic board links to each other with CPU, is used to detect input trajectory information and input trajectory information is sent to CPU;
Wherein, CPU is used to select presently used display screen and sends video data to presently used display screen.
2. double-display screen portable terminal as claimed in claim 1; It is characterized in that; Said magnetic board is two-sided non-shielding construction, and CPU has been after having selected presently used display screen, is the coordinate that meets presently used display screen with the track identification coordinate transform of this magnetic board.
3. double-display screen portable terminal as claimed in claim 1; It is characterized in that; Be provided with in the non-induction zone of magnetic board respectively with main case in CPU the electric ink screen power supervisor, the LCDs power supervisor that link to each other, be used under the control of CPU, being respectively the electric ink screen and supply power with LCDs.
4. double-display screen portable terminal as claimed in claim 3 is characterized in that, the outside of electric ink screen power supervisor and LCDs power supervisor is provided with metallic shield.
5. double-display screen portable terminal as claimed in claim 1 is characterized in that, also is provided with the membrane keyboard that links to each other with CPU with the positive relative position of LCDs on the main case, and when using LCDs, this membrane keyboard supplies user's inputting word information.
6. double-display screen portable terminal as claimed in claim 1 is characterized in that, the one side that the subsidiary engine shell is provided with the electric ink screen also is provided with one or more buttons, is used for the electric ink screen is operated.
7. double-display screen portable terminal as claimed in claim 1; It is characterized in that; Main case or subsidiary engine shell are provided with the range sensor that links to each other with CPU; CPU judges the position of subsidiary engine shell facies for main case through this range sensor, and what further confirm current use is electric ink screen or LCDs.
8. double-display screen portable terminal as claimed in claim 1 is characterized in that this portable terminal also comprises the rotating shaft web member; Main case and subsidiary engine shell are provided with a groove on interconnective side; Be provided with hollow rotating shaft on two sidewalls of each groove, an end of hollow rotating shaft is fixed on the sidewall, and the other end inserts and is arranged in the rotating shaft web member in the groove; Thereby main case and subsidiary engine shell are rotatably connected, and hollow rotating shaft also is arranged with rubber ring outward.
9. double-display screen portable terminal as claimed in claim 1 is characterized in that this portable terminal also comprises the rotating shaft web member; Main case and subsidiary engine shell are provided with a lug boss on interconnective side; Be provided with hollow rotating shaft on two sidewalls of each lug boss, an end of hollow rotating shaft is fixed on the sidewall, and the other end inserts in the rotating shaft web member; Thereby main case and subsidiary engine shell are rotatably connected, and hollow rotating shaft also is arranged with rubber ring outward.
10. like claim 8 or 9 described double-display screen portable terminals; It is characterized in that; Connecting line between main case and the subsidiary engine shell gets in the rotating shaft web member through the hollow rotating shaft of a casing among main case and the subsidiary engine shell, and passes through the hollow rotating shaft of another casing.
11. described double-display screen portable terminal as claimed in claim 8 is characterized in that, in the arranged outside of said rotating shaft web member the writing pencil slot is arranged.
12. double-display screen portable terminal as claimed in claim 11; It is characterized in that; Be provided with the style of writing switch that is connected with CPU in this writing pencil slot; When writing pencil was put into the writing pencil slot, the style of writing switch closure also sent the low level look-at-me to CPU, and CPU closes magnetic board according to this low level look-at-me; When writing pencil was taken out in the writing pencil slot, the style of writing switch opens was also sent the high level look-at-me to CPU, and CPU opens magnetic board according to this high level look-at-me.
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| CN201110259105A CN102323849A (en) | 2011-09-02 | 2011-09-02 | Dual-display mobile terminal |
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| CN201110259105A CN102323849A (en) | 2011-09-02 | 2011-09-02 | Dual-display mobile terminal |
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| CN102323849A true CN102323849A (en) | 2012-01-18 |
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| CN104252235A (en) * | 2013-06-26 | 2014-12-31 | 联想(北京)有限公司 | Keyboard controlling method and electronic equipment |
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| CN105630269A (en) * | 2014-10-29 | 2016-06-01 | 联想(北京)有限公司 | Information processing method and electronic device |
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| CN105302418A (en) * | 2015-11-02 | 2016-02-03 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN105302418B (en) * | 2015-11-02 | 2019-03-08 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
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| CN108021344A (en) * | 2017-11-22 | 2018-05-11 | 上海龙旗科技股份有限公司 | The method and apparatus of main screen of mobile terminal switching |
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| CN108718353A (en) * | 2018-08-07 | 2018-10-30 | 深圳市南和移动通信科技股份有限公司 | A kind of Dual-band Handy Phone using electronic ink screen |
| CN111752337A (en) * | 2019-03-26 | 2020-10-09 | 技嘉科技股份有限公司 | Electronic device |
| CN111752337B (en) * | 2019-03-26 | 2022-02-18 | 技嘉科技股份有限公司 | Electronic device |
| CN109976504A (en) * | 2019-04-01 | 2019-07-05 | 联想(北京)有限公司 | A kind of electronic equipment and control method |
| CN111090722A (en) * | 2019-04-22 | 2020-05-01 | 广东小天才科技有限公司 | Voice question searching method and learning device |
| CN111090722B (en) * | 2019-04-22 | 2023-04-25 | 广东小天才科技有限公司 | Voice question searching method and learning equipment |
| CN113220162A (en) * | 2021-05-13 | 2021-08-06 | 上海墨案智能科技有限公司 | Real-time interaction method, terminal and storage medium for electronic screen |
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Application publication date: 20120118 |