CN102375532B - Interactive pointing device and capturing range switching method - Google Patents
Interactive pointing device and capturing range switching method Download PDFInfo
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- CN102375532B CN102375532B CN201010251201.0A CN201010251201A CN102375532B CN 102375532 B CN102375532 B CN 102375532B CN 201010251201 A CN201010251201 A CN 201010251201A CN 102375532 B CN102375532 B CN 102375532B
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Abstract
The invention discloses an interactive pointing device. The interactive pointing device comprises an image capturing component and a processing unit, wherein the image capturing component can be operated in a first capturing range and a second capturing range, and the image capturing component is used for capturing a light source and outputting a video signal. When a distance between the interactive pointing device and the light source is less than a reference value, the processing unit controls the image capturing component to detect the light source in the first capturing range, and converts the video signal into a first coordinate data; and when the distance is greater than the reference value, the processing unit controls the image capturing component to detect the light source in the second capturing range, and converts the video signal into a second coordinate data. Meanwhile, the invention also discloses a capturing range switching method.
Description
Technical field
The present invention relates to the interactive indicator device and the method for switching acquisition scope of a kind of interactive indicator device and pointing method, particularly a kind of changeable acquisition scope.
Background technology
In recent years, because scientific and technological development is quick, interactive multimedia equipment is also and then more and more universal.Interactive multimedia equipment can allow user and audio and video carry out interaction, to reach the effect of amusement.
The interactive multimedia equipment control device of need to arranging in pairs or groups uses.Control device is except can controlling with button, and more advanced control device also has the technology of pointing to location and action induction.Point to location and just as mouse, can control the cursor on screen, and action induction can be detected three dimensions central movement and rotation.
Point to the technology of location, need to use an Image Sensor, detect the direction of control device indication.Yet general Image Sensor all has fixing acquisition scope, when the object of Image Sensor institute sensing leaves its acquisition scope, Image Sensor cannot point to location smoothly.That is to say, user must yield to the limited acquisition scope of Image Sensor, operates this interactive device.When if acquisition scope is too small, user will significantly be limited on the convenience using.
On the other hand, if will capture expanded range, need to increase Image Sensor in the consumption of electric power.And the amplitude of Image Sensor power consumption square is directly proportional to acquisition scope.That is to say, if acquisition scope is increased to originally two times, its power consumption becomes originally four times.In addition,, because above-mentioned control element is generally hand-held, these control elements need battery as power supply.When if power consumption is more, the life-span of its battery is also just shorter.
Therefore, control device in design, can run into the size of acquisition scope and the contradiction between power consumption.
Summary of the invention
In view of above problem, the present invention proposes a kind of interactive indicator device of changeable acquisition scope.This interactive indicator device comprises an image capture element and a processing unit.One image capture element can operate in one first acquisition scope and one second acquisition scope.And image capture element is in order to capture a light source, and export a signal of video signal.When interactive indicator device is to a distance of light source while being less than a reference value, processing unit is controlled image capture element with the first acquisition scope detecting light source, and processing unit converts signal of video signal to one first coordinate data.When distance is greater than a reference value, processing unit is controlled image capture element with the second acquisition scope detecting light source, and processing unit converts signal of video signal to one second coordinate data.
In addition, the present invention proposes a kind of method of the acquisition of the switching for interactive indicator device scope in addition, comprises the following steps: an image capture element and a processing unit are provided; Utilize image capture element detecting pointolite, and export a signal of video signal; Obtain pointolite to the distance between interactive indicator device; When distance is less than a reference value, control image capture element operation is in the first acquisition scope with detected light signal, and processing unit converts signal of video signal to one first coordinate data.When distance is greater than reference value, control image capture element operation is in the second acquisition scope with detected light signal, and processing unit converts signal of video signal to one second coordinate data.
Comprehensive the above, interactive indicator device proposed by the invention can automatically change acquisition scope, with the different pick-up angle of correspondence, cannot capture the situation of signal to reduce interactive indicator device.In addition, when this interactive indicator device is detected among a small circle, can higher sampling frequency detect.
Accompanying drawing explanation
Fig. 1 is according to the square Organization Chart of the first embodiment of interactive indicator device of the present invention;
Fig. 2 is the acquisition scope schematic diagram according to image capture element of the present invention;
Fig. 3 is according to the square Organization Chart of the second embodiment of interactive indicator device of the present invention;
Fig. 4 is the schematic diagram that indicator device according to the present invention is applied to the first embodiment of interaction systems;
Fig. 5 is the schematic diagram that indicator device according to the present invention is applied to the second embodiment of interaction systems; And
Fig. 6 is according to the method flow diagram of switching acquisition scope of the present invention.
Wherein, Reference numeral
10 interactive indicator device 20 image capture elements
30 processing unit 40 signal sending elements
60 first acquisition scope 70 second acquisition scopes
80 main frame 90 display screens
92 light source A the first sensing angle
B second sensing angle D1 the first distance
D2 second distance R reference value
Embodiment
In embodiment, further describe below detailed features of the present invention and advantage, its content is enough to make any those skilled in the art understand technology contents of the present invention and implement according to this, and according to the disclosed content of this instructions, claim and accompanying drawing, any those skilled in the art can understand object and the advantage that the present invention is relevant easily.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is according to the square Organization Chart of the first embodiment of interactive indicator device of the present invention, and Fig. 2 is the acquisition scope schematic diagram according to image capture element of the present invention.Interactive indicator device 10 comprises an image capture element 20 and a processing unit 30.
Image capture element 20 is in order to capture a light source, and exports a signal of video signal.Image capture element 20 can be a charge coupled cell (Charge-coupled Device, CCD) or a complementary metal oxide layer semiconductor (Complementary Metal-Oxide-Semiconductor, CMOS).During image capture element 20 acquisition light source, can operate in the first acquisition scope 60 or the second acquisition scope 70.The first acquisition scope 60 can comprise the second acquisition scope 70.For example, the scope of the first acquisition scope 60 correspondences is 160 * 160 pixels, and the scope of the second acquisition scope 70 correspondences is 96 * 128 pixels.
Image capture element 20 can be integrated in a single-chip with processing unit 30.
In first method, when the interactive indicator device 10 of light source distance is nearer, area shown on this light source image capture element 20 is also just larger, and vice versa.Therefore, can utilize the number of pixels that corresponds to luminous point on image capture element 20 to judge.When the number of pixels corresponding to luminous point is more, the interactive indicator device 10 of light source distance is also just nearer.
In the second approach, when light source is longer to arrival time of image capture element 20, also just represent that the interactive indicator device 10 of light source distance is far away.Therefore, processing unit 30 can be controlled and make light source send signal in a set time, and calculates the time being received by image capture element 20 to this signal after signal sends, and can judge that light source is to the distance of image capture element 20.
In the third method, light source is formed by two above pointolites, such as the first pointolite and second point light source.The first pointolite and second point light source are in fact at a distance of a fixing distance.The first pointolite and second point light source also can be captured by image capture element 20.The first pointolite and second point light source shown distance on image capture element 20, can be directly proportional to the distance of light source to image capture element 20.That is to say, the first pointolite that judgement image capture element 20 is captured and the distance between second point light source, can judge that light source is to the distance of image capture element 20.
Please refer to Fig. 3, Fig. 3 is according to the square Organization Chart of the second embodiment of interactive indicator device of the present invention.Interactive indicator device 10 comprises an image capture element 20, a processing unit 30 and a signal sending element 40.
In this embodiment, signal sending element 40 can be wired or wireless signal transmitting and receiving element.Such as be the radio transmission elements that meets bluetooth compliant.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the schematic diagram that indicator device according to the present invention is applied to the first embodiment of interaction systems, and Fig. 5 is the schematic diagram that indicator device according to the present invention is applied to the second embodiment of interaction systems.
Interaction systems comprises display screen 90, main frame 80, light source 92 and interactive indicator device 10.Light source 92 is configurable above or below the display screen 90, and comprises a plurality of infrared light sources.In interactive indicator device 10, be provided with the image capture element 20 that fechtable light source 92 sends, the image capture element 20 of the interactive indicator device 10 by changeable acquisition scope is at the light signal of different time points acquisition, through processing unit 30, calculate corresponding coordinate, and be reflected on display screen 90.
As shown in Figure 4, interactive indicator device 10 to light source 92 distance is one first distance D 1, and the first distance D 1 is while being less than a reference value R, and interactive indicator device 10 has the first sensing angle A.As shown in Figure 5, interactive indicator device 10 to light source 92 distance is a second distance D2, and second distance D2 is while being greater than a reference value R, and interactive indicator device 10 has the second sensing angle B.Wherein, the first sensing angle A is greater than the second sensing angle B.
When user operates this interactive indicator device 10, if interactive indicator device 10 converts the second sensing angle B to by the first sensing angle A, or while converting the first sensing angle A to by the second sensing angle B, the coordinate data that processing unit 30 produces also needs to carry out the processing of numerical value conversion.If coordinate data is not through the processing of numerical value conversion, because image capture element 20 is different in order to the acquisition scope of acquisition, therefore the coordinate data of output also can be along with change.That is to say, if coordinate data is not through numerical value conversion, when interactive indicator device 10 converts the second sensing angle B to by the first sensing angle A, or while converting the first sensing angle A to by the second sensing angle B, cursor shown on display screen 90 can be beated fast, and the inconvenience that causes user to use.
Therefore, the coordinate figure that processing unit 30 is exported, need to just can make interactive indicator device 10 unattended operations under the first sensing angle A or the second sensing angle B through coordinate conversion, can both produce identical coordinate data.
In addition,, when interactive indicator device 10 to light source 92 distances are less than a reference value R, image capture element 20 utilizes the first acquisition scope 60 acquisition signals.Because the first acquisition scope 60 is greater than the second acquisition scope 70, therefore utilize the first acquisition scope 60 to capture signals will the more electric power of consumption rate at every turn.In order to make image capture element 20, no matter be, utilize the first acquisition scope 60 or the second acquisition scope 70 all keeps fixing power consumption, when image capture element 20 utilizes the first acquisition scope 60 acquisition signal, image capture element 20 can utilize lower sampling frequency to capture.And when image capture element 20 utilizes the second acquisition scope 70 acquisition signal, image capture element 20 can utilize higher sampling frequency to capture.
Please refer to Fig. 6, Fig. 6 is according to the method flow diagram of switching acquisition scope of the present invention.
In step S101, provide an image capture element 20 and a processing unit 30.
In step S102, image capture element 20 is in order to capture a light source 92, and exports a signal of video signal.Processing unit 30 is electrically connected to image capture element 20, in order to receive the signal of video signal that comes from image capture element 20.
In step S103, obtain light source 92 to the distance between interactive indicator device 10.Obtain the method for distance for being carried out by processing unit 30.Processing unit 30 can utilize following mode to carry out the estimation of distance: (one) carrys out judging distance according to the size of the light source 92 in signal of video signal; (2) the arrival time judging distance to image capture element 20 according to light source 92; (3) according to the spacing of the first pointolite in signal of video signal and second point light source, carry out judging distance.
In step S104, according to this distance, control image capture element 20 and operate in the first acquisition scope 60 or the second acquisition scope 70 with detecting light source 92.That is to say, when this distance is less than a reference value R, image capture element 20 is with first acquisition scope 60 these light sources 92 of detecting.And when this distance is greater than a reference value R, image capture element 20 is with second acquisition scope 70 these light sources 92 of detecting.
In step S105, according to the signal of video signal of image capture element 20 detectings, processing unit 30 is converted to the first coordinate data or the second coordinate data by this signal of video signal.In order to make cursor position keep fixing, the first coordinate data or the second coordinate data need be changed, and make it correspond to identical position.
Comprehensive the above, interactive indicator device proposed by the invention can automatically change acquisition scope, with the different pick-up angle of correspondence, cannot capture the situation of signal to reduce interactive indicator device.In addition, no matter this interactive indicator device, detecting on a large scale or detecting among a small circle, all can keep identical power consumption.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (15)
1. an interactive indicator device for changeable acquisition scope, is characterized in that, comprising:
One image capture element, operates in one first acquisition scope and one second acquisition scope, to capture a light source, and exports a signal of video signal, and wherein this first acquisition scope comprises this second acquisition scope; And
One processing unit, when an interactive indicator device is to a distance of this light source while being less than a reference value, this processing unit is controlled this image capture element and is detected this light source with this first acquisition scope, this processing unit samples this signal of video signal of this image capture element with a first sampling frequency, this processing unit converts this signal of video signal to one first coordinate data; When this distance is greater than this reference value, this processing unit is controlled this image capture element and is detected this light source with this second acquisition scope, this processing unit samples this signal of video signal of this image capture element with one second sampling frequency, this processing unit converts this signal of video signal to one second coordinate data, and wherein this first sampling frequency is less than this second sampling frequency.
2. the interactive indicator device of changeable acquisition scope according to claim 1, is characterized in that, this processing unit is according to the size of this light source in this signal of video signal, to judge that this interactive indicator device is to this distance of this light source.
3. the interactive indicator device of changeable acquisition scope according to claim 1, is characterized in that, this processing unit is the arrival time to this image capture element according to this light source, to judge that this interactive indicator device is to this distance of this light source.
4. the interactive indicator device of changeable acquisition scope according to claim 1, it is characterized in that, this light source comprises one first pointolite and a second point light source, this processing unit is according to this first pointolite in this signal of video signal and a spacing of this second point light source, to judge that this interactive indicator device is to this distance of this light source.
5. the interactive indicator device of changeable acquisition scope according to claim 1, is characterized in that, more comprises a signal sending element, and this signal sending element is in order to transmit this first coordinate data or this second coordinate data.
6. the interactive indicator device of changeable acquisition scope according to claim 5, is characterized in that, this signal sending element is compatible to a Bluetooth transmission standard.
7. the interactive indicator device of changeable acquisition scope according to claim 1, is characterized in that, this image capture element and this processing unit are integrated in a single-chip.
8. the interactive indicator device of changeable acquisition scope according to claim 1, is characterized in that, this processing unit is by this signal of video signal contrast of this image capture element different time points output, to calculate this first coordinate data or this second coordinate data.
9. the interactive indicator device of changeable acquisition scope according to claim 1, is characterized in that, this image capture element is a charge coupled cell or a complementary metal oxide layer semiconductor.
10. for the switching of an interactive indicator device, capture a method for scope, it is characterized in that, comprising:
One image capture element and a processing unit are provided;
Utilize this image capture element to detect a light source, and export a signal of video signal;
Obtain this light source to the distance between this interactive indicator device; And
When this distance is less than a reference value, control this image capture element operation in one first acquisition scope to detect this light source, this processing unit samples this signal of video signal of this image capture element with a first sampling frequency, this processing unit converts this signal of video signal to one first coordinate data; When this distance is greater than this reference value, control this image capture element operation in one second acquisition scope to detect this light source, this processing unit samples this signal of video signal of this image capture element with one second sampling frequency, this processing unit converts this signal of video signal to one second coordinate data, wherein this first acquisition scope comprises this second acquisition scope, and this first sampling frequency is less than this second sampling frequency.
The method of 11. switching acquisition scopes according to claim 10, it is characterized in that, in obtaining this step of this light source distance between interactive indicator device to this, according to the size of this light source in this signal of video signal, to judge that this interactive indicator device is to this distance of this light source.
The method of 12. switching acquisition scopes according to claim 10, it is characterized in that, in obtaining this step of this light source distance between interactive indicator device to this, an arrival time according to this light source to this image capture element, to judge that this interactive indicator device is to this distance of this light source.
The method of 13. switching acquisition scopes according to claim 10, it is characterized in that, this light source comprises one first pointolite and a second point light source, wherein in obtaining this step of this light source distance between interactive indicator device to this, according to this first pointolite in this signal of video signal and a spacing of this second point light source, to judge that this interactive indicator device is to this distance of this light source.
The method of 14. switching acquisition scopes according to claim 10, is characterized in that, more comprises a step: transmit this first coordinate data or this second coordinate data.
The method of 15. switching acquisition scopes according to claim 10, is characterized in that, this processing unit is by this signal of video signal contrast of this image capture element different time points output, to calculate this first coordinate data or this second coordinate data.
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