CN103649879A - Digitizer using position-unique optical signals - Google Patents
Digitizer using position-unique optical signals Download PDFInfo
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- CN103649879A CN103649879A CN201280034962.8A CN201280034962A CN103649879A CN 103649879 A CN103649879 A CN 103649879A CN 201280034962 A CN201280034962 A CN 201280034962A CN 103649879 A CN103649879 A CN 103649879A
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- stylus
- optics
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- optical
- digitizer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03542—Light pens for emitting or receiving light
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- 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
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
Abstract
The present invention provides systems and methods of using a stylus that houses optics and a detector capable of receiving optical signals that are combined with a displayed image. Stylus position determination is made by analyzing received optical signals.
Description
the cross reference of related application
The application requires the U.S. Provisional Patent Application No.61/507 submitting on July 14th, 2011, the U.S. Provisional Patent Application No.61/507 that on July 14th, 669 and 2011 submits to, and 671 rights and interests, the disclosure of these patents is incorporated herein by reference in full.
Background technology
Nowadays, various types of fixed-point apparatus are for almost each computer utility.Developed and be able to some popular fixed-point apparatus and comprised:
(1) mouse;
(2) trace ball;
(3) comprise the transparent touch-sensitive panel of resistance-type and capacitive covering display;
(4) with pressure type, condenser type, resistance-type or the thermo-responsive panel computer of displays separated;
(5) around the beam broken detecting device of display;
(6) light pen that detects of the raster scanning time based on phosphor being refreshed to light beam;
(7) stylus that comprises pressure transducer; With
(8) use the pen of ultrasonic, three-dimensional location or radio frequency triangulation method.
The various devices of the pointer being used on position computer screen through exploitation are used suitable software driver to move in conjunction with the application software on computing machine.This type of driver of great majority is attempted the conventional X/Y idler wheel mouse of simulation.Conventionally, only locating information is fed to the application software of controlling the pointer position on screen.
Pen can provide user and the mutual higher fidelity of computer system.Yet, depending on concrete enforcement, the resolving power determination of pen location may be limited to the resolution of touch-sensitive sensor.When conventionally, the touch resolution of touch-screen and panel computer is used as input media than them, the screen resolution of corresponding computing machine is lower.
Summary of the invention
The present invention relates to digitizer system, wherein for the backlight of electronic console, being constructed to transmitting can be by the signal of stylus sensing.Stylus can determine that it is near the position of electronic console by the signal of transmitting.In one embodiment, the signal of transmitting can comprise people's visible ray, the frequency downconverts system that this light can not detect or at least almost can not notice at human user.In one embodiment, stylus can determine the position of himself and pass relevant coordinate back main frame by radio, the information that main frame then can be based on coordinate information refresh display.Many stylus can be used in conjunction with the system of so describing, and system can relatively easily adjust to adapt to other stylus.
In one embodiment, described digitizer system, this digitizer system comprises: have the display device of viewing area, wherein viewing area comprises a plurality of pixels; Be coupled to the backlight of display device; The optics stylus that comprises the optical sensor that is coupled to stylus main body; Can be coupled to communicatedly the optics stylus processor of optical sensor;
Wherein backlight is constructed at primary importance and second place transmitting at least the first optical alignment signal and the second optical alignment signal; And wherein optics stylus receives optical alignment signal, and the optical alignment signal of optics stylus processor based on received generates the positioning signal relevant to position.
In another embodiment, described display system, this display system comprises: have the display device of viewing area, wherein viewing area comprises a plurality of pixels; Be coupled to the backlight of display device; The optics stylus that comprises the optical sensor that is coupled to stylus main body; Can be coupled to communicatedly the optics stylus processor of optical sensor; Wherein backlight is constructed at primary importance and second place transmitting at least the first optical alignment signal and the second optical alignment signal; And wherein optics stylus receives optical alignment signal, and the optical alignment signal of optics stylus processor based on received generates the positioning signal relevant to position.
The present invention has also discussed correlation technique, system and goods.
These and other aspects of present patent application will be apparent from following embodiment.Yet should be by foregoing invention content understanding be in no instance the restriction to claimed theme, claimed theme is only limited by appended claims, and can modify in course of the review.
Accompanying drawing explanation
Figure 1A is the schematic diagram of the digitizer system based on LCD;
Figure 1B is the schematic diagram of the digitizer system based on emission display;
Fig. 1 C is the schematic diagram of the digitizer system based on the projection display;
Fig. 2 is the schematic diagram of the xsect of optics stylus;
Fig. 3 is the reduced graph that adopts the backlight of position uniqueness optical signalling;
Fig. 4 is the reduced graph that adopts the backlight of position uniqueness optical signalling;
Fig. 5 A is time shaft chart, has shown the expression of the position uniqueness optical signalling of each point on display;
Fig. 5 B is another time shaft chart, has shown the expression of the position uniqueness optical signalling of each point on display;
Fig. 6 is another time shaft chart, has shown the expression of the position uniqueness optical signalling of each point on display;
Fig. 7 is the reduced graph that adopts the backlight of position uniqueness optical signalling; And
Fig. 8 is the reduced graph that adopts the full array backlight of position uniqueness optical signalling.
Embodiment
The position uniqueness optical signalling that optics stylus can for example be provided by the backlight relevant to display by sensing with respect to the movement of display is measured.For example, the light-emitting component of liquid crystal display (LCD) formula display device can be constructed to may with time become (modulation) mode from the radiative signal relevant to position of diverse location of display, make the combination of two (or more) these type of position signallings of any set point on display can be by stylus sensing and for determining that stylus is with respect to display device or the position in display device.
Figure 1A is the schematic diagram of the digitizer system of embodiment A.Display 110 is electronics addressable optical shutter display (light shuttering display), such as LCD.In LCD embodiment, display 110 comprises backlight 112, and it provides people visible ray by LCD panel 111.Backlight 112 comprises at least two and the more transmitters of possibility, and these transmitters are transmitted into the light signal of modulation in the assembly of display 110.Position Modulation transmitter also can be launched visible ray by LCD, or they can launch invisible light.The relevant modulation minimally of the Position Modulation of transmitter and light signal affects the visual picture that electronics addressable display shows.
Figure 1B is the schematic diagram of the digitizer system 140 of Embodiment B.Emission display 141 is the addressable VISIBLE LIGHT EMISSION displays of electronics, and this display for example, is at least partly transparent or translucent under some light (infrared light) wavelength.The example of this display comprises plasma display and transparent Organic Light Emitting Diode (OLED) display.Backlight 142 provides invisible light by emission display panel 141.Backlight 142 comprises at least two and the more transmitters of possibility, and these transmitters are by the light signal of display 141 transmitting modulation.Transmitter and relative light signal modulation are preferably sightless, and they affect by minimally the visual picture that emission display 141 shows like this.
Fig. 1 C is the schematic diagram of the digitizer system 150 of Embodiment C.Display surface 151 is for transparent or semitransparent and can be under visible wavelength be translucent light diffusion surface under some invisible light wavelength.The example of this display comprises rear-projection display device and front projection display.In front projection display, visible ray 158 is from display surface 151 reflections.In rear-projection display device, visible ray 159 is through backlight 152 and by display surface 151 diffusions.Backlight 152 provides position uniqueness invisible light (for example infrared light) by display surface 151.Backlight 152 comprises at least two and the more transmitters of possibility, and these transmitters are by the light signal of display surface 151 transmitting modulation.Transmitter and relative light signal modulation minimally affect the visual picture showing on display surface.Backlight 152 illustrates with smooth xsect, yet back lighting also can project from certain distance surface 151.
Fig. 2 shows the cut-open view that can be used for optics stylus 50 of the present invention.Lens 52 focus on the light from display 55 on fluorescence detector 54 by hole 53, fluorescence detector is preferably photodiode, phototransistor, or for example can be charge-coupled image sensor (CCD) array (these sensing components are referred to as optical sensor).
In certain embodiments, stylus 50 can comprise photodiode or phototransistor and CCD.For example, photodiode can detection position the infrared light of modulation, CCD is the visible pixels of observation display.
Fig. 3 is the accompanying drawing with photoconduction 303 and the backlight 300 of four optical signalling transmitters at next-door neighbour each angle of photoconduction.Photoconduction 303 is the assemblies that are generally used for LCD.It generally comprises one or more transparent or semitransparent plate of material.Typical photoconduction is described to some extent in U.S. Patent application No.20100014027 and United States Patent (USP) 7,532,800 and 7,699,516.Photoconduction can also comprise reflective back of the body surface and light guiding film.The example of light guiding film comprises the brightness enhancement film of being sold with trade name Vikuiti BEF I, BEF II and BEF III by Sao Paulo, Minnesota State 3M company (3M Corporation, St.Paul, Minnesota).After backlight 300 will be positioned at display in one embodiment.Periphery location optical transmitting set around display is called as side light.Each location transmitters provides the light signal that can modulate by various pulse train, thereby produces the light signal that can be differentiated to limit the unique position on display.Backlight shown in Fig. 3 has four transmitter 310A – 310D that are positioned at every nook and cranny, and they provide optical alignment signal.In certain embodiments, transmitter can also be for display provides visible ray in needing the display of back lighting (such as LCD display).In other embodiments, location transmitters can with the side light of optical alignment signal is not provided in included other light-emitting component combine.In addition, although shown four transmitters in Fig. 3, other embodiment that for example only have two transmitters are also feasible.
For the ease of showing, in Fig. 3, only shown the signal by the upper right corner (" UR ") transmitter 310A transmitting.Transmitter 310A comprises LED in this embodiment, thereby use, with the specific warbled light signal of transmitter 310A, provides light. Other transmitters 310B, 310C and 310D corresponding to the lower right corner (LR), the lower left corner (LL) and position, the upper left corner (UL) will similarly play a role, but have each other different modulation waveforms or phase.Photoconduction 303 is on the whole area of photoconduction 303 and to leave photoconduction 303 and the distribution from the light signal of transmitter 310A – 310D is provided towards user's direction.Transmitter (if being incorporated into for example backlight scheme of LCD display) be usually located at display after (from being positioned at the user's in display the place ahead angle), therefore and each pixel by described display provides light.Yet, can adopt other configurations.For example, transmitter is not in addition for above-described embodiment B and the C of back illumination therein, and the top (being user's side) that the independent substrate of the signal that reception is provided by transmitter can be positioned at display is as digitizer covering assemblies.
Show from the optical alignment signal 320 of transmitter 310A transmitting.From the signal of other transmitters transmitting, can there is the light that different wavelength or they can (and conventionally will) have identical wavelength (color), but they can have uniqueness modulation waveform.
Fig. 4 is the accompanying drawing of backlight 301 of four optical signalling transmitters with each angle of next-door neighbour's rectangular display.It and backlight 300(Fig. 3) similar, but also comprise the displaying to each relevant optical alignment signal of transmitter 310A-310D.Fig. 4 has shown the some A mentioning with respect to subsequent drawings and has put B.
Fig. 5 a is the coordinate diagram that the light signal being provided by transmitter 310A-310D has been provided.Transmitter UL (310D) is shown as has the first waveform modulated; Transmitter UR (310A) is shown as has the second waveform modulated; Transmitter LL (310C) is shown as has the 3rd waveform modulated; And transmitter LR (310B) is shown as and has the 4th waveform modulated.Four clock period in the sync period of all four transmitters between t6 and t10 are out.It is provided for measuring the reference level of light ratio example, and synchronizing signal is provided, and the stylus taking off can be used as time reference to determine the time of each light source luminescent by this synchronizing signal.In a kind of situation relevant to an A, and in the another kind of situation relevant to a B, in the summary view of each time four kinds of waveforms, in the bottom of coordinate diagram, illustrate.Optical sensor (as in optics stylus) is by with the corresponding ratio in the position on display and detect the summation by the signal of four transmitters transmitting with optical sensor.For example, be positioned at an A(with reference to Fig. 4) optical sensor by the light detecting from the equivalent of each transmitter.But the sensor that is positioned at a B will detect more light from light source UR, is then LR, UL and LL.The relative amplitude (changing along with the degree of closeness of they and specific emitter) that this phenomenon means signal that can be based on received by ratio approach for determining the position of optical sensor.
For example, with reference to Fig. 5 a, signal B(is corresponding to the light recording at a B) be constant and maximum the sync period from t6 to t10, then four transmitter UL, UR, LL are then LR interruption pulses in order between time t10 and time t17.Along with the pulse-break of each transmitter, the light receiving at a B exists and weakens accordingly.In Fig. 5, the variation of light is by pulse P
uL, P
uR, P
lLand P
lRamplitude indication.
In each case, pulse-response amplitude is (with P
sYNCthere is deviation in level) proportional with the Relative Contribution from the light of each transmitter, the relative distance of described Relative Contribution and each transmitter is inversely proportional to.
Signal A(is corresponding to the light recording at an A) shown four pulses between t10 and t17, and the amplitude of all pulses all equates.This expression receives equal light from four transmitters, then shows again that then an A and transmitter UL, UR, LL are that LR is equidistant.
White light LEDs can be used as transmitter 310A-310D.In view of in the modulation shown in Fig. 5 a, LED has 91% dutycycle, thereby they contribute to by for example user's visible ray of LCD transmitting, and the optical alignment signal of position that is provided for determining the stylus of proximity displays.Infrared light (IR) LED also can or instead be used as transmitter 310A-310D, and they can be preferred in embodiment A, B and C.The infrared transmitter using together with embodiment A can have the wavelength that is greater than 900nM in certain embodiments.The light of longer wavelength penetrates the display pixel in the LCD of "On" state or "Off" state, thereby can be relatively independent of the image measurement positioning signal being presented on LCD.For example, the LED of transmitting 950nM infrared light can easily obtain.
Using the LED of transmitting invisible light to generate in the embodiment of position uniqueness signal, the dutycycle of LED will preferably reduce to save energy, but this type of infrared light LED is by user's visible ray that can not contribute to from display emission.Fig. 5 b has shown coordinate diagram, shows the representative signal from this type of embodiment.Fig. 5 b is similar to 5a, and it is 10% or less that the dutycycle of different is transmitter UL, UR, LL and LR is put upside down, rather than 91%.
Except the surface with respect to separate unit display, locate stylus, the variation of the pulse code of Fig. 5 A can be used for display to be distinguished from each other.For example, in having the system of two or more displays, which display stylus can detect in its visual field, and the communication from stylus to its host computer system comprises display ID and corresponding multi-display coordinate.Other functions can comprise that restriction stylus does not move with a display together with another display.
Can make in many ways the pulse code of many displays relative to each other for unique.For example, the backlight of a display can be used IR pulse as shown in Figure 5A, and the backlight of another display is launched identical waveform, but in different fundamental frequencies (different from the time cycle of the circulation of t6 to t17).Another display can be by only changing synchronizing pulse P
sYNCtime cycle (from t6 to t10) and there are differences.Another display can be by changing pulse P
uL, P
uR, P
lLand P
lRwaveform and there are differences pulse P for example
uL, P
uR, P
lLand P
lReach can comprise two pulses rather than one, as shown in the UL waveform at Fig. 6, or three pulses rather than one, as shown in the LL waveform at Fig. 6.Can be individually or use in combination other wave form varies to generate display uniqueness light signal.
Fig. 6 has shown coordinate diagram, shows the representative signal from another alternative embodiment.Be not to have out of phase same waveform, equidistant emitter pulse, the pulse shown in Fig. 6 has different waveforms, and this will contribute to distinguish every part of the signal that the optical sensor that is which emitter contributions receives.
Should recognize, the optical alignment signal that is expressed as the waveform in Fig. 5 A and 5B and Fig. 6 can multiple combination be used, and arbitrary signal can be used with together with the light source of any wavelength.In addition, also can use other modulator approaches, comprise Modulation and Amplitude Modulation, frequency or mutually modulation, pulse code variation or there is fixed frequency and the sine wave of amplitude or different frequency and/or amplitude, and from the variation of the light wavelength of different transmitters transmittings.Due to modulating frequency or due to modulation light wavelength, the modulation signal being provided by transmitter preferably human eye discover less than or almost discover less than.
Fig. 7 is the accompanying drawing of backlight 30, and this backlight comprises along ten optical signalling transmitters of the top of photoconduction 41 and bottom margin location.This is the simplicity of illustration of LCD backlight: in implementation process, LCD backlight can have more this type of transmitter.Yet this basic layout is typically to use the backlight of LED side light.For schematic object, show the wire harness representing from the light of transmitter.When optical signalling transmitter 31-40 can in from transmitter, the light of at least some be different from other and be modulated for locating stylus.For example, transmitter 31-40 can all launch identical color and mean flow rate to carry out their corresponding backlighting functions, but in addition they can be modulated by producing the signal of optical alignment signal, described optical alignment signal provides the position uniqueness signal can any location sensing on display arriving.In one embodiment, each of transmitter 31-40 can be modulated its corresponding optical alignment signal uniquely.Alternatively, some of transmitter can be modulated in the same manner with other, and precondition is that the summation at the signal of lip-deep each position of backlight 30 comprises the unique combinations from ten transmitter 31-40.In addition, transmitter 31 and 40 minimum levels ground are overlapping, make them can launch the light of modulating in the same manner.Transmitter 35 and 36 also can be launched the light of modulating in the same manner because their optical alignment signal can with the optical alignment signal combination from other transmitters, making total utilizing emitted light of any set point on backlight 30 will be unique.
Fig. 8 has shown and those similar full array backlights 80 for some LCD display.Backlight 80 is divided into Liu Ge district: A, B, C, D, E and F.Transmitter 82 provides the uniqueness optical modulation similar to other embodiment as herein described separately.
Do not use white light LEDs, another embodiment is used LED laser instrument as side light.Can scan across the photoconduction of LCD display the laser beam of the mesh lines place refraction in photoconduction, thereby the light of display is launched at preposition by visual display when scanning laser beam.The refracted portion of laser beam can be detected by optical sensor.
Except as otherwise noted, otherwise be used in the specification and claims representing that all numerical value that quantity, characteristic are measured etc. are all to be understood that as being modified by term " about ".Therefore, unless the contrary indication, otherwise the numerical parameter of listing is in the specification and claims approximate value, and the desirable characteristics that these approximate values can utilize the instruction content of present patent application to go for according to those skilled in the art changes.Be not intended to the application restric-tion of doctrine of equivalents within the scope of claims, at least should explain each numerical parameter according to the number of recorded significant digit with by applying usual rounding-off method.Although providing numerical range and the parameter of wide region of the present invention is approximate value, with regard to any numerical value, all in instantiation described herein, to list, its record is accurately also rationally as much as possible.Yet any numerical value can comprise the error relevant to test or Restriction of the Measuring.
Under the premise without departing from the spirit and scope of the present invention, will be apparent for those skilled in the art to various modifications of the present invention and change, and should be appreciated that and the invention is not restricted to exemplary embodiment listed herein.For example, except as otherwise noted, otherwise should be appreciated that the feature of a disclosed embodiment, reader also can be applicable to disclosed every other embodiment.It is also understood that all United States Patent (USP)s, Patent Application Publication case and other patents and the non-patent literature quoted are not all incorporated to way of reference inconsistent with above-mentioned disclosure in the situation that herein.
Claims (39)
1. a digitizer system, comprising:
The display device with viewing area, described viewing area comprises a plurality of pixels;
Be coupled to the backlight of described display device;
The optics stylus that comprises the optical sensor that is coupled to stylus main body;
Can be coupled to communicatedly the optics stylus processor of described optical sensor;
Wherein said backlight is constructed at primary importance and second place transmitting at least the first optical alignment signal and the second optical alignment signal;
And wherein said optics stylus receives described optical alignment signal, and the optical alignment signal of described optics stylus processor based on received generates the positioning signal relevant to position.
2. digitizer system according to claim 1, the wherein said positioning signal relevant to position comprises the signal of the coordinate of the above optics stylus of the described viewing area of indication.
3. digitizer system according to claim 1, wherein said optics stylus processor is positioned at personal computing device.
4. digitizer system according to claim 1, wherein said optics stylus processor is positioned at described stylus main body.
5. digitizer system according to claim 1, wherein said optics stylus processor is also the general processor for personal computing device.
6. digitizer system according to claim 1, also comprise primary processor, described primary processor receives the positioning signal relevant to position and provides signal to described display device, thereby causes described display device to upgrade its viewing area based on the described positioning signal relevant to position.
7. digitizer system according to claim 6, wherein said optics stylus also comprises for transmitting the stylus radio of the positioning signal relevant to position.
8. digitizer system according to claim 7, also comprises and can be coupled to communicatedly the wireless main radio of described stylus.
9. digitizer system according to claim 8, wherein said main radio and described stylus radio are used wireless protocols to be coupled communicatedly.
10. digitizer system according to claim 9, wherein said wireless protocols is carried out bluetooth standard.
11. digitizer systems according to claim 1, wherein said the first optical alignment signal and the second optical alignment signal have respectively the first modulation and the second modulation.
12. digitizer systems according to claim 1, wherein said the first optical alignment signal and the second optical alignment signal are infrared signal.
13. digitizer systems according to claim 1, wherein said the first modulating frequency and the second modulating frequency are 30Hz or higher.
14. digitizer systems according to claim 1, wherein said the first modulating frequency and the second modulating frequency are 100Hz or higher.
15. digitizer systems according to claim 1, wherein said the first modulating frequency and the second modulating frequency are 500Hz or higher.
16. digitizer systems according to claim 1, wherein said the first optical alignment signal and the second optical alignment signal have the first waveform and the second waveform.
17. digitizer systems according to claim 1, wherein said primary importance and the second place are along the edge of described display device.
18. digitizer systems according to claim 1, wherein said backlight comprises a plurality of light emitting diodes.
19. digitizer systems according to claim 18, wherein said light emitting diode is arranged to matrix form.
20. digitizer systems according to claim 1, wherein said optical alignment signal human eye discover less than.
21. digitizer systems according to claim 1, wherein said optical alignment signal has the wavelength that is greater than 900 nanometers.
22. digitizer systems according to claim 1, also comprise the second optics stylus that contains the optical sensor that is coupled to stylus main body, described the second optics stylus can be coupled to described optics stylus processor or the second optics stylus processor communicatedly, and wherein said the second optics stylus receives described optical alignment signal, and the optical alignment signal of the described optics stylus processor that can be coupled to communicatedly described the second optics stylus based on received generates the positioning signal relevant to position.
23. digitizer systems according to claim 22, also comprise the 3rd optics stylus that contains the optical sensor that is coupled to stylus main body, described the 3rd optics stylus can be coupled to described optics stylus processor or the 3rd optics stylus processor communicatedly, and wherein said the 3rd optics stylus receives described optical alignment signal, and the optical alignment signal of the described optics stylus processor that can be coupled to communicatedly described the 3rd optics stylus based on received generates the positioning signal relevant to position.
24. 1 kinds of digitizer systems, comprising:
Be constructed to show in viewing area the display device of image;
Be close to the photoconduction of described display device;
At least the first optical signalling and the second optical signalling are transmitted into at least the first light source and the secondary light source in described photoconduction;
The optics stylus that comprises the optical sensor that is coupled to stylus main body;
Can be coupled to communicatedly the optics stylus processor of described optical sensor;
Wherein said photoconduction is constructed to, by described the first optical signalling and the second optical signalling and described demonstration image blend, make the position on described viewing area relevant to the position unique combinations of described the first optical signalling and the second optical signalling;
And wherein said optics stylus receives the described position unique combinations of described the first optical signalling and the second optical signalling, and the position unique combinations of described optics stylus processor based on received generates the positioning signal relevant to position.
25. digitizer systems according to claim 24, wherein said electro-optical display device is that projector and described viewing area are screen.
26. digitizer systems according to claim 25, wherein said photoconduction is positioned between described projector and described screen.
27. digitizer systems according to claim 24, wherein said photoconduction and described display device copline.
28. 1 kinds of display systems, comprising:
The display device with viewing area, described viewing area comprises a plurality of pixels;
Be coupled to the backlight of described display device;
The optics stylus that comprises the optical sensor that is coupled to stylus main body;
Can be coupled to communicatedly the optics stylus processor of described optical sensor;
Wherein said backlight is constructed at primary importance and second place transmitting at least the first optical alignment signal and the second optical alignment signal;
And wherein said optics stylus receives described optical alignment signal, and the optical alignment signal of described optics stylus processor based on received generates the positioning signal relevant to position.
29. 1 kinds of display systems, comprising:
Be constructed to show in viewing area the display device of image;
Be close to the photoconduction of described display device;
At least the first optical signalling and the second optical signalling are transmitted into at least the first light source and the secondary light source in described photoconduction;
Wherein said photoconduction is constructed to, by described the first optical signalling and the second optical signalling and described demonstration image blend, make the position on described viewing area relevant to the position unique combinations of described the first optical signalling and the second optical signalling.
30. display systems according to claim 24, wherein said optical signalling comprises infrared light.
31. display systems according to claim 24, wherein said optical signalling comprises that wavelength is greater than the infrared light of 900 nanometers.
32. 1 kinds of photoconductions that are used in display device, comprising:
The substrate of printing opacity;
Be constructed to provide to the substrate of described printing opacity first signal source and the secondary signal source of first signal and secondary signal;
The substrate of wherein said printing opacity is constructed to mix described the first optical signalling and the second optical signalling, makes described suprabasil position relevant to the position unique combinations of described the first optical signalling and the second optical signalling.
33. photoconductions according to claim 32, wherein said photoconduction is the backlight of liquid crystal electron addressable display device.
34. photoconductions according to claim 33, wherein said the first optical signalling and the second optical signalling have respectively the first modulation and the second modulation.
35. photoconductions according to claim 34, wherein said first signal and secondary signal are optical signalling.
36. photoconductions according to claim 34, the modulating frequency of wherein said first signal and secondary signal is 30Hz or higher.
37. photoconductions according to claim 36, the modulating frequency of wherein said first signal and secondary signal is 100Hz or higher.
38. photoconductions according to claim 34, wherein said first signal and secondary signal have respectively the first waveform and the second waveform.
39. photoconductions according to claim 34, wherein said first signal source and secondary signal source are light emitting diode.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161507669P | 2011-07-14 | 2011-07-14 | |
| US201161507671P | 2011-07-14 | 2011-07-14 | |
| US61/507,671 | 2011-07-14 | ||
| US61/507,669 | 2011-07-14 | ||
| PCT/US2012/045999 WO2013009723A1 (en) | 2011-07-14 | 2012-07-10 | Digitizer using position-unique optical signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103649879A true CN103649879A (en) | 2014-03-19 |
| CN103649879B CN103649879B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201280034962.8A Expired - Fee Related CN103649879B (en) | 2011-07-14 | 2012-07-10 | Digitizer using position-unique optical signals |
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| CN (1) | CN103649879B (en) |
| WO (1) | WO2013009723A1 (en) |
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| CN105488832A (en) * | 2014-10-03 | 2016-04-13 | 奥多比公司 | Optical digital ruler |
| CN112130689A (en) * | 2019-06-24 | 2020-12-25 | 海信视像科技股份有限公司 | Touch display device, touch pen, touch display system and touch detection method thereof |
| CN112486347A (en) * | 2019-09-12 | 2021-03-12 | 青岛海信商用显示股份有限公司 | Touch display device, touch pen, touch display system and touch detection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7699516B1 (en) | 2008-02-21 | 2010-04-20 | Finity Labs | Back light module with micro Fresnel lens |
| US20100014027A1 (en) | 2008-07-16 | 2010-01-21 | Jabil Circuit, Inc. | Led backlight having edge illuminator for flat panel lcd displays |
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| CN1495518A (en) * | 2002-09-24 | 2004-05-12 | 精工爱普生株式会社 | Transmission-type screen and back-type projector |
| US20050184964A1 (en) * | 2004-02-19 | 2005-08-25 | Au Optronics | Position encoded sensing device and a method thereof |
| CN101292215A (en) * | 2005-10-17 | 2008-10-22 | 日本先锋公司 | Display device, liquid crystal display device, position detecting system and position detecting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105488832A (en) * | 2014-10-03 | 2016-04-13 | 奥多比公司 | Optical digital ruler |
| CN105488832B (en) * | 2014-10-03 | 2020-10-23 | 奥多比公司 | Optical digital ruler |
| CN112130689A (en) * | 2019-06-24 | 2020-12-25 | 海信视像科技股份有限公司 | Touch display device, touch pen, touch display system and touch detection method thereof |
| CN112486347A (en) * | 2019-09-12 | 2021-03-12 | 青岛海信商用显示股份有限公司 | Touch display device, touch pen, touch display system and touch detection method thereof |
| CN112486347B (en) * | 2019-09-12 | 2023-04-11 | 青岛海信商用显示股份有限公司 | Touch display device, touch pen, touch display system and touch detection method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013009723A1 (en) | 2013-01-17 |
| CN103649879B (en) | 2017-05-10 |
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