CN110986917B - Track sensing system and track sensing method thereof - Google Patents
Track sensing system and track sensing method thereof Download PDFInfo
- Publication number
- CN110986917B CN110986917B CN201911251092.XA CN201911251092A CN110986917B CN 110986917 B CN110986917 B CN 110986917B CN 201911251092 A CN201911251092 A CN 201911251092A CN 110986917 B CN110986917 B CN 110986917B
- Authority
- CN
- China
- Prior art keywords
- track
- turntable
- module
- reference images
- sensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/005—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 with correlation of navigation data from several sources, e.g. map or contour matching
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B11/043—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Optical Distance (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The embodiment of the invention provides a track sensing system and a track sensing method thereof. The track sensing system detects a moving track of a light source in the rotary disc through a built-in track sensing module, and calculates displacement and/or pressure values when a user rotates and/or presses the rotary disc according to the moving track, so as to judge an action of the user. Therefore, compared with the prior art, the track sensing system is less affected by noise interference, and better action identification is realized.
Description
The present application is a divisional application of 'measuring device and operation method thereof, trajectory sensing system and trajectory sensing method thereof' of the invention patent application having application date of 2016, 06, 13 and application number of 201610421018.8.
Technical Field
The present invention relates to a sensing system and a sensing method thereof, and more particularly, to a trajectory sensing system and a trajectory sensing method thereof.
Background
In the prior art, a measuring device only supporting the optical ranging principle emits a detection light to an object to be measured, and calculates a time of flight (TOF) between the light measurement device and the object to be measured by receiving the detection light reflected from the object to be measured, so as to calculate a distance between the measuring device and the object to be measured.
However, the optical distance measurement principle cannot calculate the length of the surface of the object to be measured according to the detection light reflected by the object to be measured. Therefore, if the surface length of the object needs to be known, it is inconvenient to use the measuring device only. In view of the above, it is desirable to provide a measuring device capable of simultaneously supporting and calculating the surface length of the object to be measured.
Disclosure of Invention
Embodiments of the present invention provide a measuring apparatus and an operating method thereof, and more particularly, to a measuring apparatus supporting optical ranging and trajectory sensing and an operating method thereof.
The embodiment of the invention provides a measuring device. The measuring device comprises a roller, at least one proximity sensor (proximity sensor), a track sensing module, an optical ranging module and a processor. Wherein, the roller is arranged at the bottom of the measuring device. The proximity sensor is used for detecting the proximity state between the measuring device and an object and generating an estimated distance value according to the proximity state. The track sensing module is positioned in the measuring device and is used for continuously capturing a plurality of reference images of an area surface of the roller wheel and calculating a track length moved by the measuring device according to the reference images. The optical ranging module is also positioned in the measuring device and used for emitting a light beam towards the outside of the measuring device and calculating distance information according to the received and reflected light beam. The processor is coupled among the proximity sensor, the track sensing module and the optical ranging module and selectively controls the track sensing module and the optical ranging module to be turned on or off according to the estimated distance value. When the estimated distance value is greater than a second preset threshold value, the processor controls the track sensing module to be closed and the optical ranging module to be opened.
Preferably, the second preset threshold is greater than or equal to the first preset threshold.
Preferably, the track sensing module includes a light source, an image sensing circuit and an image analyzing circuit. The light source is used for irradiating the area surface of the roller. The image sensing circuit is used for capturing the reference images of the surface of the area irradiated by the light source according to a fixed sampling period. The image analysis circuit compares the reference images based on at least one texture feature in the reference images to obtain a moving track of the light source on the roller, and calculates the length of the moving track of the measuring device according to the moving track.
Preferably, the optical ranging module includes a light emitting device, an optical sensing device, a control circuit and a distance calculating circuit. The light emitting component is used for emitting the light beam towards the outside of the measuring device. The optical sensing component is used for sensing and accumulating the energy of the reflected light beam according to a shutter period signal so as to generate an optical sensing signal. The control circuit is used for controlling the light-emitting component to continuously emit the light beam within a light-emitting time, and switching the shutter period signals to be in a high level state within a sensing time after the light-emitting component starts to emit the light beam, so that the optical sensing component senses and accumulates the energy of the reflected light beam, and accordingly, the light sensing signal is generated. The distance calculation circuit is used for obtaining a light flight time according to the energy of the light beam emitted by the light emitting component in the light emitting time and the light sensing signal, and calculating the distance information according to the light flight time.
Preferably, the measuring device further comprises a display module. The display module is used for displaying the distance information calculated by the optical ranging module and/or the track length calculated by the track sensing module.
The embodiment of the invention further provides an operating method of the measuring device used in the embodiment. The operation method comprises the following steps. The proximity sensor is used to detect the proximity state between the measuring device and the object, and an estimated distance value is generated according to the detected proximity state. And selectively controlling the track sensing module and the optical ranging module to be turned on or off according to the estimated distance value by using the processor, wherein when the estimated distance value is smaller than a first preset threshold value, the processor controls the track sensing module to be turned on and the optical ranging module to be turned off, and when the estimated distance value is larger than a second preset threshold value, the processor controls the track sensing module to be turned off and the optical ranging module to be turned on.
Preferably, the second preset threshold is greater than or equal to the first preset threshold.
Preferably, after the processor controls the track sensing module to be turned on, the operating method further includes the following steps. A plurality of reference images of an area surface of the roller are continuously captured by the track sensing module, and a track length moved by the measuring device is calculated according to the reference images.
Preferably, after the processor controls the optical ranging module to be turned on, the operating method further includes the following steps. The optical ranging module is used for emitting a light beam to the outside of the measuring device and calculating distance information according to the received and reflected light beam.
In summary, the measuring device and the operating method thereof provided by the embodiments of the present invention detect the distance change between the measuring device and the object through the built-in proximity sensor, and accordingly determine whether to turn on or off the track sensing module and the optical ranging module, so that the measuring device of the present invention has the operation function of intelligent selection, and further achieves the advantages of energy saving and power saving, and can also avoid the interference effect caused by the sensor which is not necessarily turned on. In addition, since the measuring device of the present invention moves relative to the surface of the object by the rotation of the roller, and the track result calculated by the built-in track sensing module is realized by the plurality of reference images associated with the surface of an area on the roller, the measuring device of the present invention can more effectively and accurately calculate the length of the track moved by the measuring device along the surface of the object.
For a better understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Drawings
Fig. 1 is a functional block diagram of a measurement apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an operation process of the measurement apparatus according to the embodiment of the present invention.
Fig. 3A is a functional block diagram of a proximity sensor in a measuring device according to an embodiment of the present invention.
Fig. 3B is a functional block diagram of a proximity sensor in a measuring apparatus according to another embodiment of the present invention.
Fig. 4 is a functional block diagram of a trajectory sensing module in a measuring device according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of an operation process of a measurement apparatus according to another embodiment of the invention.
Fig. 6 is a functional block diagram of an optical ranging module in a measuring apparatus according to an embodiment of the present invention.
Fig. 7 is a flowchart illustrating an operating method according to an embodiment of the present invention.
Fig. 8 is a schematic flow chart illustrating selectively controlling the track sensing module and the optical ranging module to be turned on or off in the operating method according to the embodiment of the invention.
FIG. 9 is a block diagram of a trajectory sensing system according to an embodiment of the present invention.
FIG. 10 is a schematic external view of a body in a trajectory sensing system according to an embodiment of the invention.
Fig. 11 is a flowchart illustrating a track sensing method according to an embodiment of the present invention.
Fig. 12 is a functional block diagram of a wireless charging device supporting proximity sensing according to an embodiment of the present invention.
Fig. 13 is a schematic diagram illustrating a wireless charging device supporting proximity sensing according to an embodiment of the present invention.
Detailed Description
Hereinafter, the present invention will be described in detail by illustrating various embodiments of the present invention through the accompanying drawings. The inventive concept may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Moreover, in the drawings, like reference numerals may be used to designate similar components.
First, referring to fig. 1 and fig. 2 together, fig. 1 is a functional block diagram of a measurement apparatus according to an embodiment of the present invention, and fig. 2 is a schematic diagram of an operation process of the measurement apparatus according to the embodiment of the present invention. The measuring device 1 mainly includes a roller 10, at least one proximity sensor 12, a track sensing module 14, an optical ranging module 16, and a processor 18. The track sensing module 14, the optical ranging module 16 and the processor 18 may be implemented by hardware circuits, or implemented by hardware circuits and firmware or software. In summary, the invention is not limited to a specific implementation of the measuring device 1. In addition, the track sensing module 14, the optical ranging module 16 and the processor 18 may be integrated or separately disposed, and the invention is not limited thereto. Besides, the positions of the roller 10, the proximity sensor 12, the track sensing module 14, the optical distance measuring module 16 and the processor 18 in the measuring device 1 are not limited to the positions shown in fig. 1 or fig. 2, and those skilled in the art can design them according to actual needs or applications.
In detail, the roller 10 is disposed at the bottom of the measuring device 1. The roller 10 can be further used to abut against the surface of an object 2, so that the measuring device 1 can move along the surface of the object 2 by the rotation of the roller 10, as shown in fig. 2. It should be noted that the embodiment of the present invention does not limit the specific implementation manner of the structure of the roller 10, and those skilled in the art may design the roller according to actual requirements or applications, so that details related to the roller 10 are not repeated herein.
Next, the proximity sensor 12 is used to detect a proximity state between the measuring device 1 and the object 2, and generate an estimated distance DE accordingly. It should be noted that, in a specific embodiment, the proximity sensor 12 may periodically detect, for example, every 1 second or every 0.5 seconds, and further determine the proximity state between the measuring device 1 and the object 2, but the invention is not limited thereto. Next, the track sensing module 14 is located in the measuring device 1 and is configured to continuously capture a plurality of reference images of an area surface of the roller 10, and calculate a track length of the measuring device 1 moving along the surface of the object 2 according to the reference images.
The optical ranging module 16 is also located in the measuring device 1 and is used for emitting a light beam towards the outside of the measuring device 1 and calculating a distance information according to the received and reflected light beam. The processor 18 is coupled between the proximity sensor 12, the track sensing module 14 and the optical ranging module 16, and selectively controls the track sensing module 14 and the optical ranging module 16 to be turned on or off according to the estimated distance value DE generated by the proximity sensor 12. When the estimated distance DE is smaller than a first preset threshold, the processor 18 controls the track sensing module 14 to be turned on and the optical ranging module 16 to be turned off, and when the estimated distance DE is larger than a second preset threshold, the processor 18 controls the track sensing module 14 to be turned off and the optical ranging module 16 to be turned on.
Therefore, based on the above teachings, those skilled in the art will appreciate that one of the main spirit of the measuring device 1 of the present invention is that the estimated distance DE between the measuring device 1 and the object 2 is known by the proximity sensor 12 built therein, and the estimated distance DE is analyzed by the processor 18, so that the processor 18 can determine whether to activate the track sensing module 14 to measure the movement of the measuring device 1 along the surface of the object 2, or whether to activate the optical distance measuring module 16 to measure the distance between the measuring device 1 and the object 2. In view of this, compared to the prior art that mostly only supports a single technical means as a design means, the measurement apparatus 1 of the embodiment of the present invention can simultaneously support two technical means as design means, thereby providing greater convenience to the user.
Further, in practice, the main principle of the proximity sensor 12 is to determine whether the measuring device 1 is approaching or departing from the object 2. Therefore, from the above known information, those skilled in the art will appreciate that the estimated distance value DE generated by the proximity sensor 12 cannot effectively be actually represented as the actual distance between the measuring device 1 and the object 2. Furthermore, the present invention is not limited to the unit of characterization (e.g., centimeter or meter) used for the estimated distance DE. In other words, the design manner for calculating the estimated distance value DE can be performed by those skilled in the art according to actual requirements or applications.
However, in order to further explain implementation details about the proximity sensor 12, the present invention further provides two embodiments of the proximity sensor 12. Referring to fig. 3A, fig. 3A is a functional block diagram of a proximity sensor in a measurement apparatus according to an embodiment of the present invention. The proximity sensor 12 includes a transmitting unit 120 and a receiving unit 122. The proximity sensor 12 of fig. 3A mainly sends an optical signal L through the emitting unit 120 and reflects the optical signal L to the receiving unit 122 via the object 2, so that the receiving unit 122 determines the proximity state (i.e., approaching or departing) between the measuring device 1 and the object 2 according to the intensity change of the received optical signal L, and generates the estimated distance DE accordingly.
In addition, referring to fig. 3B, fig. 3B is a functional block diagram of a proximity sensor in a measurement device according to another embodiment of the present invention. Compared to the proximity sensor 12 of fig. 3A, the proximity sensor 12 of fig. 3B includes an image capturing unit 124 and a pixel calculation processing unit 126. The proximity sensor 12 of fig. 3B mainly captures an image including the object 2 through the image capturing unit 124, and calculates a pixel cluster number occupied by the object 2 according to the image through the pixel calculation processing unit 126. Then, based on the number of the pixel clusters, the pixel calculation processing unit 126 can determine the approaching state (i.e., approaching or departing) between the measuring device 1 and the object 2, and accordingly generate the estimated distance value DE. Therefore, in practice, the object 2 must keep a fixed shape structure so as to be recognized by the pixel calculation processing unit 126, and according to the prior art, if the imaging size ratio of the object 2 is larger as the measuring device 1 is closer to the object 2, the number of pixel clusters in the image occupied by the object 2 must be larger, and conversely, if the imaging size ratio of the object 2 is smaller as the measuring device 1 is farther away from the object 2, the number of pixel clusters in the image occupied by the object 2 must be smaller.
Therefore, based on the above teachings, it should be concluded by those skilled in the art that the proximity sensor 12 in fig. 3A determines the proximity or the distance between the measuring device 1 and the object 2 according to the intensity change of the optical signal L, and the proximity sensor 12 in fig. 3B determines the proximity or the distance between the measuring device 1 and the object 2 according to the pixel change of the object 2 occupied in the imaging. In summary, the above two embodiments are only examples, and are not intended to limit the present invention, and those skilled in the art should be able to design the proximity sensor 12 according to actual requirements or applications.
On the other hand, referring back to fig. 2, when the user wants to know the length of the track that the measuring device 1 moves along the surface of the object 2, the user must approach the measuring device 1 to the object 2 until the roller 10 can be abutted against the surface of the object 2. Therefore, when the estimated distance DE is smaller than a first predetermined threshold (e.g. 3 cm), the measuring device 1 of the embodiment of the present invention can determine to activate the trajectory sensing module 14 to measure the movement of the measuring device 1 along the surface of the object 2 through its built-in processor 18. In addition, in order to avoid unnecessary power consumption and interference influence caused by other sensors, when the processor 18 determines to activate the track sensing module 14 for measurement, the processor 18 can simultaneously control the optical ranging module 16 to be turned off, so as to achieve the effects of saving power and blocking interference.
On the contrary, when the user wants to obtain the real distance information between the measuring device 1 and the object 2, the user must keep the measuring device 1 and the object 2 stationary, so as to facilitate the optical ranging module 16 to perform the optical time-of-flight measurement. Therefore, when the estimated distance DE is greater than a second predetermined threshold (e.g., 7 cm), the measuring device 1 of the embodiment of the present invention can determine to activate the optical ranging module 16 to measure the actual distance between the measuring device 1 and the object 2 through the built-in processor 18. Similarly, when the processor 18 determines to activate the optical ranging module 16 for measurement, the processor 18 can simultaneously control the track sensing module 14 to be turned off to avoid unnecessary power consumption and interference. In view of this, the second predetermined threshold is greater than or equal to the first predetermined threshold.
However, in order to further explain the implementation details of the trajectory sensing module 14, the present invention further provides an embodiment of the trajectory sensing module 14. Referring to fig. 4, fig. 4 is a functional block diagram of a track sensing module in a measuring device according to an embodiment of the present invention. It should be noted that the following is only one detailed implementation of the track sensing module 14 in the measuring device 1, and is not intended to limit the invention. In addition, the track sensing module 14 of the present embodiment can be executed in the operation process shown in fig. 2, so please refer to fig. 2 for understanding. Otherwise, the components in fig. 4 that are the same as those in fig. 1 are labeled with the same reference numerals, and thus the details thereof will not be described herein.
The track sensing module 14 includes a light source 140, an image sensing circuit 142 and an image analyzing circuit 144. The image sensing circuit 142 and the image analyzing circuit 144 can be implemented by hardware circuits, or implemented by hardware circuits and firmware or software. In summary, the present invention is not limited to the specific implementation of the trajectory sensing module 14. In addition, the light source 140, the image sensing circuit 142 and the image analyzing circuit 144 may be integrated or separately disposed, and the invention is not limited thereto. Furthermore, the positions of the light source 140 and the image sensing circuit 142 corresponding to the roller 10 are not limited to the positions shown in fig. 4, and those skilled in the art can design them according to actual requirements or applications.
Specifically, the light source 140 is configured to illuminate an area surface R1 of the roller 10, and the image sensing circuit 142 is configured to capture a plurality of reference images of the area surface R1 illuminated by the light source 140 according to a fixed sampling period. The image analysis circuit 144 compares the reference images based on at least one texture feature of the reference images to obtain a moving track of the light source 140 on the wheel 10, and calculates a length of the track of the measuring device 1 moving along the surface of the object 2 according to the moving track.
More specifically, the conventional optical navigation device (e.g., an optical mouse) also irradiates a light source to a working surface, and captures a plurality of continuous images associated with the working surface by using an image sensing circuit, and then compares and analyzes the images to determine a displacement of the optical navigation device within a certain time interval, and controls a cursor on a screen according to the displacement, so as to achieve a navigation effect. Therefore, based on the above teachings, those skilled in the art should understand that the operation principle of the track sensing module 14 in the embodiment of the present invention is similar to that of the conventional optical navigation device. However, compared to the conventional optical navigation device, the measuring device 1 of the embodiment of the present invention mainly moves relative to the surface of the object 2 by the rotation of the roller 10, so that the continuous images captured by the image sensing circuit 142 are the multiple reference images of the area surface R1 on the roller 10 illuminated by the light source 140. Accordingly, through the above operations, in the case that the surface of the object 2 is irregular, the trajectory sensing module 14 can still effectively and accurately calculate the length of the trajectory that the measuring device 1 moves along the surface of the object 2. It is to be noted that, since the technical means for comparing the plurality of reference images to obtain the moving track of the light source 140 is available to those skilled in the art, details about the above operations are not repeated herein.
On the other hand, please refer to fig. 5, in which fig. 5 is a schematic diagram illustrating an operation process of a measurement apparatus according to another embodiment of the present invention. As described above, in the case that the user wants to know the actual distance information DR between the measuring apparatus 1 and the object 2, since the estimated distance DE is greater than the second predetermined threshold, the measuring apparatus 1 of the embodiment of the present invention can determine to switch to activate the optical ranging module 16 (i.e. simultaneously control the turn-off of the trajectory sensing module 14) through the built-in processor 18, so as to measure the light flight time between the round-trip measuring apparatus 1 and the object 2.
Further, referring to fig. 6, fig. 6 is a functional block diagram of an optical ranging module in a measuring device according to an embodiment of the present invention. It should be noted that the following is only one detailed implementation of the optical ranging module 16 in the measuring apparatus 1, and is not intended to limit the present invention. In addition, the optical ranging module 16 of the present embodiment can be executed in the operation process shown in fig. 5, so please refer to fig. 5 for understanding. Otherwise, the components in fig. 6 that are the same as those in fig. 1 are labeled with the same reference numerals, and thus the details thereof will not be described herein.
The optical ranging module 16 includes a light emitting element 160, an optical sensing element 162, a control circuit 164 and a distance calculating circuit 166. The control circuit 164 and the distance calculation circuit 166 may be implemented by pure hardware circuits, or implemented by hardware circuits in combination with firmware or software. In summary, the present invention is not limited to the specific implementation of the optical ranging module 16. In addition, the light emitting element 160, the optical sensing element 162, the control circuit 164 and the distance calculating circuit 166 may be integrated or separately disposed, and the invention is not limited thereto. Furthermore, the light emitting element 160, the optical sensing element 162, the control circuit 164 and the distance calculating circuit 166 are disposed at positions corresponding to those of the measuring apparatus 1, and are not limited to the positions shown in fig. 6, and those skilled in the art can design the measuring apparatus according to actual requirements or applications.
Specifically, the light emitting element 160 is configured to emit a light beam LID toward the outside of the measuring apparatus 1 to the surface of the object 2, and the optical sensing element 162 is configured to sense and accumulate the energy of the reflected light beam LRD according to a shutter period signal SST, and accordingly generate a light sensing signal SLS 1. In practice, the light emitting element 160 may be a light-emitting diode (LED), and the light emitting element 160 emits the light beam LID to the surface of the object 2 according to a light emitting period signal SLD. For example, when the light emitting period signal SLD represents "high level", the light emitting element 160 emits the light beam LID to the surface of the object 2; on the contrary, when the light emitting period signal SLD represents "low level", the light emitting element 160 does not emit the light beam LID to the surface of the object 2.
In another aspect, in practice, the optical sensing element 162 may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) photosensitive element, and the optical sensing element 162 senses and accumulates the energy of the light beam LRD reflected by the object 2 according to the shutter period signal SST to generate the light sensing signal SLS 1. In addition, the optical sensing element 162 is used for determining whether to output the optical sensing signal SLS1 according to a read signal SRE.
For example, when the shutter period signal SST represents "high level", the optical sensing element 162 senses and accumulates the energy of the reflected light beam LRD; in contrast, when the shutter period signal SST represents "low level", the optical sensing element 162 does not sense and accumulate the energy of the reflected light beam LRD. In addition, when the read signal SRE represents "read", the optical sensing element 162 outputs the optical sensing signal SLS1 according to the accumulated energy of the reflected light beam LRD. It is noted that when the read signal SRE represents "read", the optical sensing element 162 resets the accumulated energy of the reflected light beam LRD after the optical sensing element 162 outputs the optical sensing signal SLS1 (i.e., the optical sensing element 162 clears the accumulated energy).
More specifically, the control circuit 164 is configured to control the light emitting element 160 to continuously emit the light beam LID to the surface of the object 2 within a light emitting time, and switch the shutter period signal SST to be in a "high" state within a sensing time after the light emitting element 160 starts emitting the light beam LID, so that the optical sensing element 162 senses and accumulates energy of the reflected light beam LRD, and generates the light sensing signal SLS1 accordingly. Finally, the distance calculating circuit 166 is configured to obtain the light flight time between the measurement apparatus 1 and the object 2 according to the energy of the light beam LID emitted by the light emitting element 160 during the light emitting time and the light sensing signal SLS1, and calculate the distance information DR between the object 2 and the measurement apparatus 1 according to the light flight time. It is to be noted that, since the technical means for obtaining the light flight time through the energy change of the light and calculating the distance according to the light flight time are available to those skilled in the art, details about the above operations are not repeated herein. In summary, the above embodiments are only examples, and are not intended to limit the present invention, and those skilled in the art should be able to design the optical ranging module 16 according to actual needs or applications.
On the other hand, referring back to fig. 1, the measuring apparatus 1 further includes a display module 19, and the display module 19 is used for displaying the distance information DR calculated by the optical ranging module 16 and/or the track length calculated by the track sensing module 14. In practice, the display module 19 may be a touch-sensitive or a non-touch-sensitive display screen, but the invention is not limited thereto, and those skilled in the art can design the display module according to actual requirements or applications.
In addition, in order to further describe the flow of the operation method for the measuring apparatus of the foregoing embodiment, the present invention further provides an implementation manner of the operation method. Referring to fig. 7, fig. 7 is a flowchart illustrating an operating method according to an embodiment of the present invention. The method described in this embodiment can be performed in the measuring apparatus 1 shown in fig. 1, and therefore, it is possible to refer to fig. 1 for understanding. In addition, the detailed step flows are as described in the foregoing embodiments, and therefore, only the outline is provided herein and redundant description is omitted.
First, in step S701, a proximity sensor is used to detect a proximity state between a measuring device and an object, and an estimated distance value is generated based on the detected proximity state. Next, in step S703, the processor selectively controls the track sensing module and the optical ranging module to be turned on or off according to the estimated distance value. When the estimated distance value is greater than a second preset threshold value, the processor controls the track sensing module to be closed and the optical ranging module to be opened.
It is noted that, in the embodiment of the present invention, the second predetermined threshold is greater than or equal to the first predetermined threshold. In addition, please refer to fig. 8, fig. 8 is a schematic flow chart illustrating selectively controlling the track sensing module and the optical ranging module to be turned on or off in the operating method according to the embodiment of the present invention. In fig. 8, the same flow steps as those in fig. 7 are denoted by the same reference numerals, and therefore, the details thereof are not described in detail herein.
Further, step S703 may include steps S801 to S811. First, in step S801, the processor determines whether the estimated distance value is smaller than a first predetermined threshold value. In step S803, if the estimated distance value is smaller than the first predetermined threshold value, the processor controls the track sensing module to be turned on and the optical ranging module to be turned off, and the process proceeds to step S805, and in step S805, the method of the present embodiment continuously captures a plurality of reference images of an area surface of the roller by using the track sensing module, and calculates the length of the track of the measuring device moving along the surface of the object according to the reference images. In contrast, in step S807, if the estimated distance value is smaller than the first predetermined threshold, the processor determines whether the estimated distance value is larger than the second predetermined threshold.
In step S809, if the estimated distance value is greater than the second predetermined threshold value, the processor controls the track sensing module to be turned off and the optical ranging module to be turned on, and the process proceeds to step S811, and in step S811, the method according to this embodiment uses the optical ranging module to emit a light beam to the outside of the measuring device, and calculates the distance information between the object and the measuring device according to the received and reflected light beam.
In summary, the measuring device and the operating method thereof provided by the embodiments of the present invention detect the distance change between the measuring device and the object through the built-in proximity sensor, and accordingly determine whether to turn on or off the track sensing module and the optical ranging module, so that the measuring device of the present invention has the operation function of intelligent selection, and further achieves the advantages of energy saving and power saving, and can also avoid the interference effect caused by the sensor which is not necessarily turned on. In addition, since the measuring device of the present invention moves relative to the surface of the object by the rotation of the roller, and the track result output by the built-in track sensing module is realized by the plurality of reference images associated with the surface of an area on the roller, the measuring device of the present invention can more effectively and accurately calculate the length of the track moved by the measuring device along the surface of the object.
In another aspect, as mentioned above, compared to the conventional optical navigation device, one of the main spirit of the track sensing module of the embodiment of the present invention is to capture a plurality of reference images of an area surface on the roller illuminated by the light source. In view of the above, an embodiment of the invention further provides a track sensing system. Referring to fig. 9 and fig. 10, fig. 9 is a functional block diagram of a track sensing system according to an embodiment of the invention, and fig. 10 is an external view of a main body of the track sensing system according to the embodiment of the invention.
The track sensing system 9 mainly includes a main body 90, a turntable 92, a track sensing module 94 and an action recognition module 96. The track sensing module 94 and the motion recognition module 96 may be implemented by hardware circuits, or implemented by hardware circuits and firmware or software, and in short, the present invention is not limited to the specific implementation manner of the track sensing module 9. In addition, the above components may be integrated or separately arranged, and the invention is not limited thereto.
In detail, the main body 90 is used to enable the track sensing system 9 to be configured as a main housing of an electronic device. Therefore, the embodiment of the present invention also does not limit the specific implementation manner of the structure of the main body 90, and those skilled in the art can design the main body according to actual requirements or applications, so that details related to the main body 90 are not described herein. In addition, if the track sensing system 9 is configured as a wearable electronic device, the track sensing system 9 further includes a ring-shaped belt (not shown) for allowing the main body 90 to be easily placed on a movable portion (e.g., a wrist) of a user. In summary, the embodiments of the present invention also do not limit the specific implementation manner of the electronic device constituted by the track sensing system 9, and those skilled in the art can design the electronic device according to actual needs or applications.
In addition, as shown in fig. 10, the dial 92 is disposed in a lateral plane in a surface of the body 90 and is adapted to be rotated and/or pressed by a user against at least a portion of the dial 92. The trace sensing module 94 is used for continuously capturing a plurality of reference images of an area surface R1' of the turntable 92, and calculating a displacement and/or a pressure value when the user rotates and/or presses the turntable 92 according to the reference images. Finally, the action recognition module 96 determines an action of the user according to the displacement and/or the pressure value.
Furthermore, the details of the track sensing module 94 in the present embodiment are similar to the design manner shown in fig. 4, and therefore, details related to the operation of the track sensing module 94 are not repeated herein. In brief, the track sensing module 94 of the present embodiment also includes a light source 140, an image sensing circuit 142 and an image analyzing circuit 144.
It is noted that, compared to the light source 140 shown in fig. 4, the light source 140 of the present embodiment is irradiated onto the roller 10, and the light source 140 of the present embodiment is irradiated onto the turntable 92. Therefore, in the present embodiment, the area surface R1 'may be defined as an area surface associated with the lateral plane of the turntable 92, as shown in fig. 10, and the image sensing circuit 142 captures a plurality of reference images of the area surface R1' illuminated by the light source 140 according to a fixed sampling period. Then, the image analysis circuit 144 compares the reference images with respect to at least one texture feature in the reference images, and further obtains a moving track (e.g., horizontal or vertical) of the light source 140 in a lateral plane of the turntable 92, and calculates a displacement and/or a pressure value when the user rotates and/or presses the turntable 92 according to the moving track.
However, in other embodiments, the first area surface R1' may be defined as an area surface (not shown) associated with the bottom plane of the turntable 92 instead, but the invention is not limited thereto. Therefore, the image sensing circuit 142 captures a plurality of reference images of the first area surface R1', i.e., a plurality of reference images on the bottom plane of the turntable 92 illuminated by the light source 140. Then, the image analysis circuit 144 compares the reference images based on at least one texture feature of the reference images, and further obtains a moving track of the light source 140 in the bottom plane of the turntable 92, and calculates a displacement amount when the turntable 92 is rotated by the user according to the moving track.
In this regard, in the above embodiment, the user may also press at least a portion of the rotating disc 92, so that the track sensing module 94 in this embodiment can also calculate the pressure value when the user presses the rotating disc 92 (i.e. the force magnitude when the user presses) according to the intensity variation of the light source 140 on the area surface R1'. For example, the trace sensing module 94 may further include at least one photosensitive element (not shown) for sensing and accumulating the intensity variation of the light source 140 reflected from the region surface R1'. In this way, the image analysis circuit 144 can simultaneously calculate the pressure value when the user presses the rotary plate 92 according to the intensity change of the light source 140 analyzed by the photosensitive element. It should be noted that the present invention is not limited to the specific implementation of calculating pressure values. Therefore, it should be understood by those skilled in the art from the foregoing disclosure that the above embodiments are only examples, and are not intended to limit the invention, so that those skilled in the art should be able to design the displacement and pressure values according to actual needs or applications.
Referring to fig. 9, the main body 90, the turntable 92, the track sensing module 94 and the motion recognition module 96 may be combined into an electronic device, and the track sensing system 9 further includes a processing module (not shown) disposed in the electronic device, and the processing module is configured to control the electronic device to execute a function corresponding to the motion determined by the motion recognition module 96.
To further illustrate the operation process of the track sensing system, the present invention further provides an embodiment of the track sensing method. Referring to fig. 11, fig. 11 is a schematic flow chart illustrating a track sensing method according to an embodiment of the invention. The method described in this example can be implemented in the trajectory sensing system 9 shown in fig. 9, so please refer to fig. 9 for understanding. In addition, the detailed step flow is as described in the foregoing embodiments, which are only summarized here and not described in detail.
First, in step S111, a plurality of reference images of an area surface on the turntable are continuously captured by the track sensing module, and a displacement and/or a pressure value when the user rotates and/or presses the turntable is calculated according to the reference images. Next, in step S113, the motion recognition module is used to determine a motion of the user according to the displacement and/or the pressure.
In summary, the track sensing system and the track sensing method thereof provided by the embodiments of the invention detect the moving track of the light source in the turntable through the built-in track sensing module, and calculate the displacement and/or the pressure value when the user rotates and/or presses the turntable, and further determine an action of the user. Therefore, compared with the prior art, the track sensing system is less affected by noise interference, and better action identification is realized.
In another aspect, as described above, the proximity sensor is based on the principle of determining whether an object is approaching or departing. In view of the above, an embodiment of the present invention further provides a wireless charging device supporting the proximity sensing. Referring to fig. 12 and fig. 13, fig. 12 is a functional block diagram of a wireless charging device supporting proximity sensing according to an embodiment of the present invention, and fig. 13 is a schematic usage diagram of the wireless charging device supporting proximity sensing according to the embodiment of the present invention.
The wireless charging device 13 mainly includes a charging module 130, at least one proximity sensor 132, and a central controller 134. The charging module 130, the proximity sensor 132 and the central controller 134 may be implemented by pure hardware circuits, or implemented by hardware circuits and firmware or software, and in short, the present invention is not limited to the specific implementation manner of the wireless charging device 13. In addition, the above components may be integrated or separately arranged, and the invention is not limited thereto.
In detail, the charging module 130 is used to perform a wireless charging function for the object 2' (e.g., the mobile communication device in fig. 13). The proximity sensor 132 is used to detect a proximity state between the wireless charging device 13 and the object 2', and generate an estimated distance value accordingly. It should be noted that, in certain embodiments, the proximity sensor 132 may periodically detect a proximity state between the wireless charging device 13 and the object 2' and further generate a corresponding estimated distance value, for example, every 1 second or every 0.5 seconds, but the invention is not limited thereto.
In addition, the central controller 134 is coupled between the charging module 130 and the proximity sensor 132, and is configured to selectively control the charging module 130 to be turned on or off according to the estimated distance value, wherein when the estimated distance value is equal to or smaller than a first threshold value, the central controller 134 controls the charging module 130 to be turned on, and when the estimated distance value is equal to or smaller than a second threshold value, the central controller 134 further enables the charging module 130 to start to perform the wireless charging function for the object 2.
Furthermore, the charging module 130 is used to enable the wireless charging device 13 to perform a wireless charging function on the object 2', and therefore, the embodiment of the present invention does not limit the specific implementation manner of the charging module 130, and a person skilled in the art can design the charging module according to actual requirements or applications, so details related to the charging module 130 are not repeated herein. In addition, the details of the proximity sensor 132 in the present embodiment are similar to the design manner of fig. 3A or fig. 3B, and therefore, details about the operation of the proximity sensor 132 are not repeated herein. It is noted that, as is known in the art, the proximity sensor 132 in the present embodiment can be controlled to be in an always-on state due to the advantage of ultra-low power consumption of the proximity sensor 132.
Specifically, as shown in fig. 13, in the initial state, only the proximity sensor 132 is controlled to be always on, and other modules and circuits (e.g., the charging module 130) in the wireless charging device 13 are controlled to be off. Then, if the central controller 134 determines that the estimated distance value is equal to or less than the first threshold (e.g., 50 cm) in the case that the object 2 'is continuously close to the wireless charging device 13, the central controller 134 may correspondingly control the charging module 130 in the wireless charging device 13 to be in an on state, and until the estimated distance value is equal to or less than the second threshold (e.g., 10 cm), the central controller 134 may further cause the charging module 130 to start to perform the wireless charging function for the object 2'. Conversely, when the central controller 134 determines that the estimated distance value is greater than the second threshold value (e.g., 10 cm) in a case where the object 2 'is continuously away from the wireless charging device 13, the central controller 134 may cause the charging module 130 to stop performing the wireless charging function for the object 2', and until the estimated distance is greater than the first threshold value (e.g., 50 cm), the central controller 134 may accordingly control the charging module 130 to be in the off state.
Therefore, through the above-mentioned periodic operation process, the wireless charging device 13 can avoid unnecessary power consumption waste, and thereby achieve the technical effect of overall energy saving and power saving. It should be noted that the above-mentioned embodiments are only examples, and are not intended to limit the invention, and those skilled in the art should be able to design the wireless charging device to support the proximity sensor according to actual requirements or applications.
On the other hand, as can be appreciated by those skilled in the art in light of the above disclosure, the central controller 134 of the present embodiment can also control the wireless charging device 13 to perform at least one other function on the object 2 according to the estimated distance value. For example, the wireless charging device 13 further includes a wireless transmission module (not shown), wherein if the central controller 134 determines that the estimated distance value is equal to or smaller than a third threshold value (e.g., 30 cm), the central controller 134 can correspondingly control the wireless transmission module to be turned on, and enable the wireless charging device 13 to perform data transmission with other electronic devices (not shown) through the wireless transmission module.
In summary, the wireless charging device supporting proximity sensing provided in the embodiments of the present invention detects a distance change between the wireless charging device and an object through a built-in proximity sensor, and accordingly determines whether to turn on or turn off the charging module, so as to achieve the technical effects of saving energy and power.
The above description is only a preferred embodiment of the present invention, but the features of the present invention are not limited thereto, and those skilled in the art can easily conceive of changes and modifications within the scope of the present invention, and all such changes and modifications can be covered by the claims.
Claims (5)
1. A trajectory sensing system, characterized in that it comprises:
a main body;
a dial disposed on a surface of the body, the dial being adapted to be rotated and/or pressed by a user at least a portion of the dial;
the track sensing module is positioned at one side of the turntable, continuously captures a plurality of reference images of an area surface of the turntable, and calculates a displacement and/or a pressure value when the user rotates and/or presses the turntable according to the plurality of reference images; and
the action identification module is used for judging an action of the user according to the displacement and/or the pressure value;
the track sensing system further comprises a processing module arranged in the electronic device, wherein the processing module is used for controlling the electronic device to execute a function corresponding to the action.
2. The trajectory sensing system of claim 1, wherein the trajectory sensing module comprises:
a light source for irradiating the area surface of the turntable;
an image sensing circuit for capturing the reference images of the area surface illuminated by the light source according to a fixed sampling period; and
an image analysis circuit compares the plurality of reference images based on at least one texture feature in the plurality of reference images to obtain a movement track of the light source in the turntable, and calculates the displacement and/or the pressure value when the user rotates and/or presses the turntable according to the movement track.
3. A track sensing method applied to a track sensing system, wherein the track sensing system comprises a main body, a turntable, a track sensing module and an action recognition module, wherein the turntable is disposed on a surface of the main body, and the turntable is adapted to be rotated and/or pressed by a user on at least a portion of the turntable, the track sensing method comprising:
continuously capturing a plurality of reference images of an area surface of the turntable by using the track sensing module, and calculating a displacement and/or a pressure value when the user rotates and/or presses the turntable according to the plurality of reference images; and
judging an action of the user according to the displacement and/or the pressure value by using the action identification module;
the track sensing system further comprises a processing module arranged in the electronic device, wherein the processing module is used for controlling the electronic device to execute a function corresponding to the action.
4. The trajectory sensing method of claim 3, wherein the trajectory sensing module comprises:
a light source for irradiating the area surface of the turntable;
an image sensing circuit for capturing the reference images of the area surface illuminated by the light source according to a fixed sampling period; and
an image analysis circuit compares the plurality of reference images based on at least one texture feature in the plurality of reference images to obtain a movement track of the light source in the turntable, and calculates the displacement and/or the pressure value when the user rotates and/or presses the turntable according to the movement track.
5. A trajectory sensing system, characterized in that it comprises:
a main body;
a dial disposed on a surface of the body, the dial being adapted to be rotated and/or pressed by a user against at least a portion of the dial; and
the track sensing module is positioned at one side of the turntable, continuously captures a plurality of reference images of the surface of an area of the turntable, and calculates a displacement and/or a pressure value when the user rotates and/or presses the turntable according to the plurality of reference images;
the track sensing system further includes a processing module disposed in the electronic device, wherein the processing module is configured to control the electronic device to execute a function corresponding to the displacement and/or the pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251092.XA CN110986917B (en) | 2016-06-13 | 2016-06-13 | Track sensing system and track sensing method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251092.XA CN110986917B (en) | 2016-06-13 | 2016-06-13 | Track sensing system and track sensing method thereof |
| CN201610421018.8A CN107490370B (en) | 2016-06-13 | 2016-06-13 | Measuring device and operation method thereof, track sensing system and track sensing method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610421018.8A Division CN107490370B (en) | 2016-06-13 | 2016-06-13 | Measuring device and operation method thereof, track sensing system and track sensing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110986917A CN110986917A (en) | 2020-04-10 |
| CN110986917B true CN110986917B (en) | 2021-10-01 |
Family
ID=60642014
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610421018.8A Active CN107490370B (en) | 2016-06-13 | 2016-06-13 | Measuring device and operation method thereof, track sensing system and track sensing method thereof |
| CN201911251092.XA Active CN110986917B (en) | 2016-06-13 | 2016-06-13 | Track sensing system and track sensing method thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610421018.8A Active CN107490370B (en) | 2016-06-13 | 2016-06-13 | Measuring device and operation method thereof, track sensing system and track sensing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN107490370B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI679615B (en) * | 2018-02-14 | 2019-12-11 | 台灣檢驗科技股份有限公司 | Automatic test method of sensor |
| EP3605016B1 (en) * | 2018-04-16 | 2022-04-06 | Shenzhen Goodix Technology Co., Ltd. | Image sensing system and electronic device |
| CN110972063B (en) * | 2019-10-25 | 2020-12-11 | 珠海格力电器股份有限公司 | Distance measurement method, device and system and readable medium |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1716282A (en) * | 2004-06-14 | 2006-01-04 | 精博科技股份有限公司 | Displacement vector pick up device |
| CN101063911A (en) * | 2006-04-28 | 2007-10-31 | 原相科技股份有限公司 | Method and apparatus for detecting motion of image in optical navigator |
| JP2010058279A (en) * | 2008-09-01 | 2010-03-18 | Ricoh Co Ltd | Image recorder |
| TWI340336B (en) * | 2007-03-13 | 2011-04-11 | Grandot Tech Inc | |
| CN102117128A (en) * | 2009-12-31 | 2011-07-06 | 敦南科技股份有限公司 | High resolution image sensing device and image sensing method thereof |
| JP2013008196A (en) * | 2011-06-24 | 2013-01-10 | Ntt Docomo Inc | Mobile information terminal, operation state determination method, program |
| TW201308161A (en) * | 2011-08-09 | 2013-02-16 | Wistron Corp | Method and system for estimating the tendency of pressure change on a touch panel |
| CN103455209A (en) * | 2012-06-04 | 2013-12-18 | 原相科技股份有限公司 | Optical sensing device |
| CN103793057A (en) * | 2014-01-26 | 2014-05-14 | 华为终端有限公司 | Information processing method, device and equipment |
| CN104978575A (en) * | 2015-05-12 | 2015-10-14 | 友达光电股份有限公司 | Fingerprint identification system and operation method thereof |
| CN105094443A (en) * | 2015-08-21 | 2015-11-25 | 深圳市汇顶科技股份有限公司 | Touch pressure detecting device and method |
| CN105159554A (en) * | 2015-08-27 | 2015-12-16 | 广东欧珀移动通信有限公司 | Mobile terminal and image scaling method and device |
| CN105589643A (en) * | 2015-12-18 | 2016-05-18 | 努比亚技术有限公司 | Mobile terminal unlocking method and mobile terminal |
| US9348432B2 (en) * | 2012-09-18 | 2016-05-24 | Korea Advanced Institute Of Science And Technology | Transmittance based sensor |
| CN105653099A (en) * | 2016-03-01 | 2016-06-08 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for feeding back pressing intensity of touch screen |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002090114A (en) * | 2000-07-10 | 2002-03-27 | Mitsutoyo Corp | Optical spot position sensor and displacement measuring device |
| CN1700158A (en) * | 2004-05-21 | 2005-11-23 | 元光科技股份有限公司 | Optical mouse detecting system |
| US8232966B2 (en) * | 2008-06-03 | 2012-07-31 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Multiple input optical navigation system |
| JP2010277647A (en) * | 2009-05-28 | 2010-12-09 | Sony Corp | Printing device, printing method, and printing program |
| FR2959046B1 (en) * | 2010-04-19 | 2012-06-15 | Michelin Soc Tech | METHOD FOR CONTROLLING THE APPEARANCE OF THE SURFACE OF A TIRE |
| JP5626591B2 (en) * | 2011-04-14 | 2014-11-19 | アルプス電気株式会社 | Input device |
| JP5819096B2 (en) * | 2011-04-28 | 2015-11-18 | 富士通コンポーネント株式会社 | Contact terminal device |
| CN103076925B (en) * | 2011-10-26 | 2016-07-06 | 原相科技股份有限公司 | Optical touch control system, optical sensing module and How It Works thereof |
| TWI430012B (en) * | 2011-12-05 | 2014-03-11 | Hannspree Inc | Image-capturing touch panel |
| CN103389815B (en) * | 2012-05-08 | 2016-08-03 | 原相科技股份有限公司 | Detecting object moves method and the system thereof of output order |
| CN103455137B (en) * | 2012-06-04 | 2017-04-12 | 原相科技股份有限公司 | Displacement sensing method and displacement sensing device |
| JP6029335B2 (en) * | 2012-06-07 | 2016-11-24 | キヤノン株式会社 | Image forming apparatus |
| US9390483B2 (en) * | 2012-12-26 | 2016-07-12 | Dalian Everspry Sci & Tech Co., Ltd. | Processing method of pressure-sensitive light and shadow imaging system and formed footprint image |
| TWI494749B (en) * | 2013-03-15 | 2015-08-01 | Pixart Imaging Inc | Displacement detecting device and power saving method thereof |
| TWI501199B (en) * | 2013-07-16 | 2015-09-21 | Pixart Imaging Inc | Input device and computer system having operation pattern analysis |
| CN104346257A (en) * | 2013-07-29 | 2015-02-11 | 原相科技股份有限公司 | Input device with operation mode analysis function and computer system |
| CN105046257B (en) * | 2015-07-31 | 2018-08-14 | 武汉理工大学 | A kind of character identifying method and system of the special mark form of rear axle master gear |
-
2016
- 2016-06-13 CN CN201610421018.8A patent/CN107490370B/en active Active
- 2016-06-13 CN CN201911251092.XA patent/CN110986917B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1716282A (en) * | 2004-06-14 | 2006-01-04 | 精博科技股份有限公司 | Displacement vector pick up device |
| CN101063911A (en) * | 2006-04-28 | 2007-10-31 | 原相科技股份有限公司 | Method and apparatus for detecting motion of image in optical navigator |
| TWI340336B (en) * | 2007-03-13 | 2011-04-11 | Grandot Tech Inc | |
| JP2010058279A (en) * | 2008-09-01 | 2010-03-18 | Ricoh Co Ltd | Image recorder |
| CN102117128A (en) * | 2009-12-31 | 2011-07-06 | 敦南科技股份有限公司 | High resolution image sensing device and image sensing method thereof |
| JP2013008196A (en) * | 2011-06-24 | 2013-01-10 | Ntt Docomo Inc | Mobile information terminal, operation state determination method, program |
| TW201308161A (en) * | 2011-08-09 | 2013-02-16 | Wistron Corp | Method and system for estimating the tendency of pressure change on a touch panel |
| CN103455209A (en) * | 2012-06-04 | 2013-12-18 | 原相科技股份有限公司 | Optical sensing device |
| US9348432B2 (en) * | 2012-09-18 | 2016-05-24 | Korea Advanced Institute Of Science And Technology | Transmittance based sensor |
| CN103793057A (en) * | 2014-01-26 | 2014-05-14 | 华为终端有限公司 | Information processing method, device and equipment |
| CN104978575A (en) * | 2015-05-12 | 2015-10-14 | 友达光电股份有限公司 | Fingerprint identification system and operation method thereof |
| CN105094443A (en) * | 2015-08-21 | 2015-11-25 | 深圳市汇顶科技股份有限公司 | Touch pressure detecting device and method |
| CN105159554A (en) * | 2015-08-27 | 2015-12-16 | 广东欧珀移动通信有限公司 | Mobile terminal and image scaling method and device |
| CN105589643A (en) * | 2015-12-18 | 2016-05-18 | 努比亚技术有限公司 | Mobile terminal unlocking method and mobile terminal |
| CN105653099A (en) * | 2016-03-01 | 2016-06-08 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for feeding back pressing intensity of touch screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107490370B (en) | 2020-01-10 |
| CN107490370A (en) | 2017-12-19 |
| CN110986917A (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW201743074A (en) | Measurement device and operation method thereof | |
| CN110114739B (en) | Eye tracking system with low latency and low power | |
| US10609285B2 (en) | Power consumption in motion-capture systems | |
| US6995748B2 (en) | Apparatus for controlling a screen pointer with a frame rate based on velocity | |
| US6795056B2 (en) | System and method for reducing power consumption in an optical screen pointing device | |
| CN110986917B (en) | Track sensing system and track sensing method thereof | |
| CN102326133B (en) | The equipment of being provided for enters system, the method and apparatus of activity pattern | |
| US8873069B2 (en) | Motion sensing method for determining whether to perform motion sensing according to distance detection result and related apparatus thereof | |
| KR101535690B1 (en) | Fingerprint sensing device | |
| US20140319326A1 (en) | Ambient light based gesture detection | |
| US20100079411A1 (en) | Optical finger navigation utilizing quantized movement information | |
| TWI444857B (en) | Low power optical mouse | |
| US9218069B2 (en) | Optical sensing device to sense displacement | |
| WO2015052243A1 (en) | Control system for a gesture sensing arrangement and method for controlling a gesture sensing arrangement | |
| US20160041632A1 (en) | Contact detection system, information processing method, and information processing apparatus | |
| TWI530828B (en) | Optical mouse including thermal sensor | |
| TW201319895A (en) | Displacement detection device and operation method thereof | |
| US10082883B2 (en) | Optical navigation device and locus smoothing method thereof | |
| US10325377B2 (en) | Image depth sensing method and image depth sensing apparatus | |
| US20130057516A1 (en) | Optical touch-control system with track detecting function and method thereof | |
| CN107563259B (en) | Method for detecting action information, photosensitive array and image sensor | |
| US7220956B2 (en) | Optical mouse with reduced power consumption | |
| TW201337649A (en) | Optical input device and input detection method thereof | |
| CN220154804U (en) | Detecting system with remove detection function | |
| TWI459238B (en) | Motion sensing method and motion sensing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |