CN101920112B - Optical directing system and method for increasing tolerance of optical directing system to background light noise - Google Patents
Optical directing system and method for increasing tolerance of optical directing system to background light noise Download PDFInfo
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- CN101920112B CN101920112B CN2009101475191A CN200910147519A CN101920112B CN 101920112 B CN101920112 B CN 101920112B CN 2009101475191 A CN2009101475191 A CN 2009101475191A CN 200910147519 A CN200910147519 A CN 200910147519A CN 101920112 B CN101920112 B CN 101920112B
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Abstract
The invention discloses an optical directing system and a method for increasing tolerance of the optical directing system to background light noise. The system can increase tolerance to the background light noise, and comprises a first optical director and a first optical receiver, wherein the first optical director is used for transmitting a first specific number light spot which can be controlled to be transmitted in a common mode or a specific flickering mode, the optical receiver is used for capturing the first specific number light spot and judging the noise condition of a received background light; when the noise of the background light reaches a threshold value, the working mode of the first optical director is switched to ensure that the first specific number light spot is transmitted in the specific flickering mode, so as to increase the tolerance to the background light noise.
Description
Technical field
The present invention relates to a kind ofly improve method to the background noise tolerance in optical pointing system, particularly improve the method to the background noise tolerance in a kind of optical pointing system that is applied to the peripheral game device.
Background technology
Optical point device, device with optical mode transmission directional signal, can be applicable to the signal input in the interactive video game, usefulness as the action sensing tracking, or, broad sense is sayed it, can be applicable in the computer with the position of control vernier on computer screen, the instead indicator device of mouse.
No matter the interactive electrical game is video game or computer game, all is quite welcome amusement and recreation.Generally, computer game involves computer to the execution of computer software, and the operation of computer input peripheral device, similarly is keyboard, mouse, rocking bar and dancing machine etc.Yet the mode of operation of these computer input peripheral devices is so that electric game is true to nature not.Hereat, interesting for game is more stimulated, " optical pointing system " that can catch player actions arises at the historic moment.As shown in Figure 1, this optical pointing system 100 is essentially a phtographic lens 101 collocation one smooth localizer 102, and this light localizer can cooperate game to adopt various moulding in shape, such as bat, pistol, sword, steering wheel etc.And phtographic lens can catch the dynamic of indicator device, so that the transmission of the signal of this group pointing system is able to wireless penetration to overcome the inconvenience of player when carrying out the 3D action game.Moreover, " indicator device " self do not have light source from tradition, the surface coating is with the passive type localizer (passive marker) of reflectorized material, be modified into the localizer with light source, to avoid traditional passive type localizer need to add projection source and to need background light source control inconvenience in the reasonable scope.At last, its light source of the localizer of built-in light source can be selected visible light or black light, and in the use, the localizer that sends visible light may affect player's vision and cause discomfort and its optical signalling easily to be disturbed by bias light, so use infrared ray in the black light in the design of this localizer more.Use infrared ray to have power saving and cheap advantage as the localizer of light source, certainly ought become the first-selection that industry designs this product.
Yet, in our living environment, in fact be full of infrared ray, as long as object has heat will send heat radiation, and these heat radiations (being so-called infrared ray) may cause the noise 105 in the picture 106 that phtographic lens 101 catches, and make the luminous point 104 of being launched by localizer 102 can't identification.In addition, the optics sensing element in the phtographic lens, such as charge coupled device (charge coupled device, CCD) De speck on making, also may be so that the inevasible problem that suffers from the ambient noise interference of optical pointing system.
Summary of the invention
In view of this, main purpose of the present invention provides a kind of optical pointing system, can improve the background noise tolerance.Optical pointing system of the present invention comprises: one first smooth localizer comprises one first smooth emission part, in order to launch one first given number luminous point; And one first drive unit, it couples this first smooth emission part, specific flash that pattern is sent and an optical receiver in order to control this first given number luminous point with a general pattern or with one, in order to catching this first given number luminous point, and judge the noise condition of the bias light that receives; When the noise of this bias light reaches a threshold value, then switch the first smooth localizer mode of operation, make this first given number luminous point switch to a specific pattern of flashing by general modfel and send, so as to improving the background noise tolerance.
The present invention also provides a kind of optical pointing system that improves to the method for background noise tolerance, this optical pointing system comprises a smooth localizer and an optical receiver, this noise suppressing method comprises: when the noise of a bias light in this light localizer environment of living in reaches a threshold value, then make this light localizer flash pattern output luminous point with one.
Traditional localizer only sends luminous point with single kind of pattern, common is to make luminous point send (being the general modfel among the present invention) in the mode of not flashing, and can making localizer switch on multiple specific flashing, the present invention (comprises that this general modfel and this flash pattern between pattern, wherein flash pattern variform is arranged again, see embodiment hereinafter for details), will effectively improve the situation of ambient noise interference.Except improving the bias light tolerance, another object of the present invention is in using an optical pointing system with the glazing localizer, utilize given described smooth localizer difference to flash the mode of pattern, reach identification from the effect of each luminous point of each light localizer.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly also cooperates accompanying drawing to elaborate.
Description of drawings
Fig. 1 is the outward appearance skeleton diagram of optical pointing system.
Fig. 2 is the line block diagram of optical pointing system 200 of the present invention.
Fig. 3 A is the schematic diagram of emission part of the present invention under general modfel.
Fig. 3 B is that emission part of the present invention is in the first schematic diagram that flashes under the pattern.
Fig. 3 C is that emission part of the present invention is in the second schematic diagram that flashes under the pattern.
Fig. 4 is the flow chart of noise suppressing method first embodiment of optical pointing system of the present invention.
Fig. 5 is the synoptic diagram with optical pointing system of a plurality of smooth localizers.
Fig. 6 is the flow chart of noise suppressing method second embodiment of optical pointing system of the present invention.
Fig. 7 is the flow chart of noise suppressing method the 3rd embodiment of optical pointing system of the present invention.
Description of reference numerals in the above-mentioned accompanying drawing is as follows:
100～optical pointing system, 101～phtographic lens, 102～light localizer, 104～luminous point, 105～noise, 106～picture, 200～optical pointing system, 210～the first smooth localizers, 212～the first drive units, 213～the first smooth emission parts, 220～optical receiver, 221～optical pickocff, 222～noise suppressor, 223～action tracing sensor, 230～the first given number luminous points, 240～the first directional signal, 250～the first control signals, 510～the second smooth localizers, 512～the second drive units, 513～the second smooth emission parts, 550～the second control signals.
The specific embodiment
Reach technology, means and the effect that predetermined purpose is taked in order further to understand the present invention, see also following relevant detailed description of the present invention and accompanying drawing, believe purpose of the present invention, feature and characteristics, when getting thus one deeply and concrete understanding, yet accompanying drawing only provides with reference to and usefulness is described, the present invention is limited.
Fig. 2 is the line block diagram of optical pointing system 200 of the present invention, and this optical pointing system 200 mainly comprises one first smooth localizer 210, and an optical receiver 220.This first smooth localizer 210 more comprises one first smooth emission part 213, in order to launch one first given number luminous point 230; And one first drive unit 212, it couples this first smooth emission part 213, sends with a general pattern or with a specific pattern of flashing in order to control this first given number luminous point 230.In one embodiment, when this first optical receiver 220 judges that the noise of bias light in light localizer 210 its environment of living in reaches a threshold value, namely switch the first smooth localizer 210 mode of operations, make this first given number luminous point 230 send with a specific pattern of flashing.Optical receiver 220 can be in order to catch this first given number luminous point 230, and according to this invention, this first optical receiver 220 can carry out identification to this first given number luminous point 230 more easily.If specific flashing then repeated above-mentioned steps and switched the first smooth localizer 210 mode of operations when pattern can't effectively be carried out identification, make this first given number luminous point 230 switch to another and specificly flash pattern so that this first optical receiver 220 can carry out identification to this first given number luminous point 230 more easily.In another embodiment, optical receiver 220 also can be used for judging the noise condition of the bias light that receives; When the noise of this bias light reaches a threshold value, then export one first control signal 250 to this drive unit 212, make this first given number luminous point 230 flash pattern with this and send, so as to the Background suppression optical noise.Above-mentioned this first smooth emission part 213 comprises a given number LED, in order to launch infrared ray.And above-mentioned this optical receiver 220 comprises an optical pickocff 221, and this optical pickocff is a photo-sensitive cell, such as charge coupled device (Charge Coupled Device, CCD) or CMOS (ComplementaryMetal-Oxide-Semiconductor, CMOS) sensor is in order to catch this first given number luminous point 230 and to export this first directional signal 240.Being coupled to optical pickocff is a noise suppressor 222, and it is in order to receiving this first directional signal 240, to judge whether this first given number luminous point ambient noise of living in reaches a threshold value, and exports this control signal 250.The noise condition of bias light can make a decision by the signal noise ratio (Signal to Noise Ratio, S/N) of this first given number luminous point and ambient noise, and above-mentioned threshold value can be given by 222 of noise suppressors.As prior art, this optical receiver 220 can comprise that an action tracing sensor 223 is coupled to noise suppressor 222 again, it includes a digital signal processor (Digital Signal Processor, DSP) and a CPU (Central Processing Unit, CPU), in order to this light localizer dynamically done subsequent treatment.
With reference to Fig. 3 A to Fig. 3 C, will help to understand above-mentioned general modfel and flash pattern.General modfel such as Fig. 3 A, for this first given number luminous point 230 that the first smooth emission part 213 is launched does not flash, namely continues light yellow and does not go out; First flashes pattern, and such as Fig. 3 B, for this first given number luminous point 230 that makes the first smooth emission part 213 flashes with a CF, wherein this CF can be adjusted by above-mentioned optical receiver 220; And, such as Fig. 3 C, second to flash pattern be that this first given number luminous point 230 of the first smooth emission part 213 is flashed with a specific modality, wherein this specific modality can be adjusted by above-mentioned optical receiver 220 equally, for example: specific modality can be: one, as among the figure 310, on and off time span (T1 among the figure and T2) is done periodic configuration; Two, as among the figure 320, flash frequency (F1 among the figure and F2) and do periodic configuration.On be set forth in the single signal that person in the I interval all can be used as identification.From the above, this first given number luminous point 230 comprises a luminous point at least.It should be noted that, different embodiments can corresponding different shape the mode of flashing, those of ordinary skills can mix utilization easily according to above-mentioned various forms, its variation is too numerous to enumerate, above-mentioned for example for convenience of description usefulness only is not to limit the present invention.
Fig. 4 is the flow chart of noise suppressing method first embodiment of optical pointing system of the present invention.Merging directly enters this general modfel with reference to figure 2 when this optical pointing system 200 starts, this first given number luminous point 230 that this first smooth emission part 213 in this first smooth localizer 210 is launched does not flash.The light of this optical pickocff 221 comprises that this first given number luminous point 230 becomes to have one first directional signal 240 of digital image information in internal conversion to continue to enter all wherein after this optical receiver 220 starts, and export noise suppressor 222 to, when noise suppressor 222 judges that the noise of bias lights does not reach a threshold value of setting and can pick out this first given number luminous point 230 time, then this noise suppressor 222 does not send any order, and this optical pointing system 200 still moves with general modfel.And when this noise suppressor 222 judges that the noise of bias light has surpassed the threshold value of a setting, then one first control signal 250 is sent in this first drive unit 212 of this first smooth localizer 210 of far-end, flash mode operation so that this first drive unit 212 drives this first smooth emission part 213 with this, and the method can make this noise suppressor be able to pick out this first given number luminous point 230 and reach the purpose that suppresses this background noise easilier.Above-mentioned this first control signal transfers to this first drive unit 212 by this noise suppressor 222, for example, and can be by the mode of wireless transmission.It should be noted that above-described embodiment with the device of this optical receiver 220 as the judgement background noise, yet, those of ordinary skills as can be known, the action of judging background noise needn't be limited with this device, and for example, this first smooth localizer 210 itself can be carried out above-mentioned action.
Fig. 5 is the synoptic diagram with optical pointing system of a plurality of smooth localizers, and following embodiment will explain with two optical point devices, the situation of those of ordinary skills in the time can extending to easily a plurality of optical point device of use according to this explanation.Fig. 6 is the flow chart of noise suppressing method second embodiment of optical pointing system of the present invention.Merging directly enters this general modfel with reference to figure 2, Fig. 5 when this optical pointing system 200 starts, this first given number luminous point 230 that this first smooth emission part 213 in this first smooth localizer 210 is launched does not flash.The light of this optical pickocff 221 comprises that this first given number luminous point 230 becomes to have one first directional signal 240 of digital image information in internal conversion to continue to enter all wherein after this optical receiver 220 starts, and export noise suppressor 222 to, when this optical receiver 220 only captures this first given number luminous point 230, then this noise suppressor 222 does not send any order, and this optical pointing system 200 still moves with general modfel.And when this optical receiver 220 captures this first given number luminous point 230 and this second given number luminous point 530 simultaneously, this first drive unit 212 of this first smooth localizer 210 of 220 pairs of far-ends of this optical receiver then, this second drive unit 512 of this second smooth localizer 510 sends respectively one first control signal 250 and one second control signal 550, so that this first drive unit 212 and this second drive unit 512 drive respectively in this first smooth emission part 213 and this second smooth emission part 513 at least one to flash pattern, or both are respectively with the different mode operation that flashes.The method can make this noise suppressor pick out this first given number luminous point 230 and the second given number luminous point 530, reaches another function of the present invention.This second embodiment is applied on the localizer of interactive game, and a plurality of players of the localizer of not sharing the same light are used in identification easily.Above-mentioned this first control signal 250 and this second control signal 550 transfer to respectively this first drive unit 212 by this noise suppressor 222 and this second drive unit 512 equally can be by the mode of wireless transmission.
Fig. 7 is the flow chart of noise suppressing method the 3rd embodiment of optical pointing system of the present invention.Present embodiment is the combination of above-mentioned first and second embodiment, and this optical pointing system and above-mentioned two embodiment are identical, are not giving unnecessary details in this.The method and the above-mentioned two embodiment difference parts that suppress noise in this optical pointing system are described as follows.Merging is with reference to figure 2, optical receiver 220 in this optical pointing system 200 has caught simultaneously a plurality of luminous points and detection noise reaches a threshold value, then noise suppressor 222 sends first control signal and makes all light localizers send luminous point with the single pattern of flashing, with the noise of all bias lights of filtering.Moreover, when noise suppressor 222 has still caught a plurality of luminous points, then send control signal and make described smooth localizer send luminous point with the different pattern of flashing respectively, finish whereby the identification of described smooth localizer.
Although the present invention is disclosed in preferred embodiment; so it is not to limit the present invention; any those of ordinary skills; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so the protection domain done of the present invention is as the criterion when looking appended the scope that claim defines.
Claims (20)
1. an optical pointing system can improve the background noise tolerance, comprising: one first smooth localizer comprises:
One first smooth emission part, in order to launching one first given number luminous point, and this first given number luminous point comprises at least one luminous point; And
One first drive unit, couple this first smooth emission part, flash pattern with a general pattern or and send in order to control this first given number luminous point, wherein, when the noise of a bias light in this first smooth localizer environment of living in reached a threshold value, then this first given number luminous point flashed pattern with this and sends.
2. optical pointing system as claimed in claim 1 more comprises:
One optical receiver in order to catching this first given number luminous point, and is judged the situation of the noise of this bias light; When the noise of this bias light reaches this threshold value, then make this first given number luminous point flash pattern with this by the mode of operation of switching this first smooth localizer and send, so as to suppressing this background noise.
3. optical pointing system as claimed in claim 1, wherein when the noise of this bias light did not reach a threshold value, then this first given number luminous point was kept with this general modfel and is sent.
4. optical pointing system as claimed in claim 1, wherein this general modfel is that this first given number luminous point that emission part is launched does not flash.
5. optical pointing system as claimed in claim 1, wherein this to flash pattern be that this first given number luminous point that the first smooth emission part is launched flashes with CF.
6. optical pointing system as claimed in claim 1, wherein this to flash pattern be that this first given number luminous point of the first smooth emission part emission is flashed with specific modality.
7. optical pointing system as claimed in claim 1 more comprises:
At least one second smooth localizer, it comprises:
One second smooth emission part, in order to launching one second given number luminous point, and this second given number luminous point comprises at least one luminous point; And
One second drive unit couples this second smooth emission part, and maybe this flashes pattern and sends with this general modfel in order to control this second given number luminous point;
Wherein, when this first given number luminous point and this second given number luminous point occurred simultaneously, the mode of operation of then switching this first and second light localizer made in this first and second given number luminous point at least one flash pattern with this and sends.
8. optical pointing system as claimed in claim 7, wherein when an optical receiver captures this first given number luminous point and this second given number luminous point simultaneously, the mode of operation of then switching this first and second light localizer makes in this first and second given number luminous point at least one flash pattern with this and sends.
9. optical pointing system as claimed in claim 7 more comprises:
When this first given number luminous point and this second given number luminous point occurred simultaneously, then this first and second given number luminous point was launched with the different patterns of flashing respectively.
10. optical pointing system as claimed in claim 1, this first smooth emission part comprises that a LED is in order to launch infrared ray.
11. optical pointing system as claimed in claim 2, wherein this optical receiver comprises again an optical pickocff, and wherein this optical pickocff is a photo-sensitive cell, in order to catch this first given number luminous point and to export one first directional signal.
12. optical pointing system as claimed in claim 11, wherein this optical receiver comprises again a noise suppressor, and wherein this noise suppressor is in order to receive this first directional signal, to judge whether this first directional signal ambient noise of living in reaches a threshold value.
13. optical pointing system as claimed in claim 12, wherein this optical receiver comprises that more an action tracing sensor is coupled to noise suppressor, it includes a digital signal processor and a CPU, in order to this light localizer dynamically done subsequent treatment.
14. one kind is improved optical pointing system to the method for background noise tolerance, this optical pointing system comprises a smooth localizer and an optical receiver, and this raising optical pointing system comprises the method for background noise tolerance:
When the noise of a bias light in this light localizer environment of living in reaches a threshold value, then make this light localizer flash pattern output luminous point with one.
15. raising optical pointing system as claimed in claim 14 more comprises the method for background noise tolerance:
Make this optical receiver search flash this luminous point of pattern output, and the noise of this bias light of filtering.
16. raising optical pointing system as claimed in claim 14 more comprises the method for background noise tolerance:
When the noise of this bias light in this light localizer environment of living in does not reach a threshold value, then make this light localizer export a luminous point with a general pattern; And this optical receiver is searched this luminous point with this general modfel output.
17. raising optical pointing system as claimed in claim 16 is to the method for background noise tolerance, wherein this general modfel is not for flashing this luminous point.
18. raising optical pointing system as claimed in claim 14 is to the method for background noise tolerance, when this optical receiver captures a plurality of luminous point of exporting from a plurality of smooth localizers simultaneously, then make described a plurality of smooth localizer export described a plurality of luminous point with the different patterns of flashing respectively.
19. raising optical pointing system as claimed in claim 14 is to the method for background noise tolerance, wherein this to flash pattern be that this luminous point of emission is flashed with CF.
20. raising optical pointing system as claimed in claim 14 is to the method for background noise tolerance, wherein this to flash pattern be that this luminous point of emission is flashed with specific modality.
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| CN2009101475191A CN101920112B (en) | 2009-06-16 | 2009-06-16 | Optical directing system and method for increasing tolerance of optical directing system to background light noise |
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| CN2009101475191A CN101920112B (en) | 2009-06-16 | 2009-06-16 | Optical directing system and method for increasing tolerance of optical directing system to background light noise |
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| CN101920112A CN101920112A (en) | 2010-12-22 |
| CN101920112B true CN101920112B (en) | 2013-05-29 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341998A (en) * | 2000-08-02 | 2002-03-27 | 夏普株式会社 | Carrier detecting circuit and infrared remote controlled receiver |
| TW200917830A (en) * | 2007-10-09 | 2009-04-16 | Silicon Optronics Inc | Image detectors and image detection module |
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2009
- 2009-06-16 CN CN2009101475191A patent/CN101920112B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341998A (en) * | 2000-08-02 | 2002-03-27 | 夏普株式会社 | Carrier detecting circuit and infrared remote controlled receiver |
| TW200917830A (en) * | 2007-10-09 | 2009-04-16 | Silicon Optronics Inc | Image detectors and image detection module |
Non-Patent Citations (3)
| Title |
|---|
| JP昭57-73647A 1982.05.08 |
| JP特开2005-84330A 2005.03.31 |
| JP特开平10-311875A 1998.11.24 |
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