TWI227393B - A power-saving method of an optical position guiding device - Google Patents

Abstract

The invention relates to a power-saving method of an optical position guiding device (or generally called optical mouse). The method is disclosed to control the frequency of a sensor fetching an image in accordance with the moving speed of the optical position guiding device, meaning that the image-fetching frequency is determined by the variations of the horizontal displacement value and the vertical displacement value so as to save the power of the optical position guiding device. Furthermore, while entering a sleep mode, it is unnecessary for the optical position guiding device to generate a current within a fixed period of time, which is used to drive the image sensor for monitoring if the optical position guiding device moves. Instead, a displacement sensor, such as the mechanical displacement activation device, is utilized to generate a current to interrupt the sleep mode, attaining the power-saving goal.

Description

1227393 Five slides, description of the invention (1) The technical field to which the invention belongs] is related to an optical position guidance device (or a power saving method commonly known as optical two # ', especially a control device for controlling optical position) Retrieve only one thousand electric parties, and use a displacement sensor such as a mechanical displacement contact during sleep ^ rb ^ yj. I π ^ "I I set" to interrupt the optical position of the hibernation state, etc. Power saving method. Prior technology] Press, because the optical quality is becoming more and more popular, the translation value of the optical mouse's movement, please input the operation steps in step S1, and use step S2. Using step S3, two images are used; Step S4 is to generate a straight displacement value; Step S5 is to output the universal horse of the computer, and the position of the guide device guides one of the row axes to produce a picture of the displacement, as shown in the figure; The system includes a sensor which is more and more accurate because the mouse is a device that moves accurately. The horizontal displacement value and the computer system are shown in the conventional technique. Once the acquisition of a digital signal processor is high, so it is one of the essential supplies for the computer of its peripheral equipment, and it is also gradually popularized in the acquisition of general large images to determine the sliding value and the vertical position of the vertical axis. The first position of the optical position guidance device is based on the technology of the optical position guidance device. The second image is compared with the horizontal displacement value and the vertical axis of the first image and the first parallel axis. Vertical displacement value

No. 5 1227393

5. Description of the invention (2); and step S6, output the horizontal and vertical displacement numbers. Obtain the first image in steps S1 and S2 at a fixed output period, the faster the detectable movement rate is, the shorter the time of the first image is, the shorter the light time is, so it takes more =, Figure image sensor exposure processor. Conversely, the movement needs to be slower, but the life and power to drive the LED light source and capture the frequency of the image, you can also know when the capture = S electricity. This time period is in step S3. When the first image is equal to the master, the higher the power consumption, the higher the power. And the displacement value and one of the vertical axis vertical displacement === When the image, that is, the horizontal and no specific displacement detected after a specific time, when 0, that is, no displacement, the power saving mode of the optical position guidance device =, That is to enter a power saving mode step S30 for a first waiting period; the main steps of the process include: step S 3 1 for a second waiting period; step S 3 2 for entering an intermittent mode; and steps S34. Enter a sleep mode. In step S30, the sensor captures images to detect the displacement of the mouse during the continuous capture period. During the waiting period of Leji Er Temple, it will remain after the first waiting period; H? Position guidance The second waiting period of the device, at which time the sensor will be in the state, that is, it will enter this time to save power. At step S31, “Stop capturing the image and compare it after stopping for a period of time after the completion of the mother ’s long-term work”, the sensor will still not move after the waiting period of stop two, that is, close the child, if the mouse passes the first When in hibernation state, the sensor will enter the hibernation state and enter the stop for a longer period of time to save power

1227393 V. Description of the invention (3) Force, after this period of time, make the sensor capture an image to determine whether the optical position guidance device is moving (S32); otherwise, it will enter the intermittent mode, at this time it will still be After being fixed for a period of time, the sensor is used to capture an image to determine whether the optical position guidance device is moved (S34). The fixed time of the intermittent mode is shorter than the fixed time of the sleep state. Therefore, the optical position guidance device of the conventional technology only enters the power saving mode when it is not moved. However, regardless of the intermittent mode and the sleep state, a current will be generated after a fixed time to drive the sensor to capture images. The longer this fixed time is, the more power is saved, but the harder it is to have the opportunity to be awakened to monitor whether the optical position guidance device is moving. Although the sensor is controlled with an intermittent time to capture images, it still consumes very much power. At present, the Bluetooth technology is gradually mature, so it is more important to control the current to extend the use time of the wireless optical position guidance device. Therefore, how to propose a novel power-saving method of the optical position guidance device for the above problems can not only improve the disadvantages of the traditional optical position guidance device using the same image acquisition frequency regardless of the speed of movement, but also use the displacement trigger device to improve wakeup The mechanism to improve the power saving function has long been the user ’s eager hope and the inventor ’s intentions, and the inventor is thinking and improving based on many years of experience in research, development, and sales of related products. Ideas, poor personal expertise, through various research and design and special discussions, finally developed an improved power-saving method for optical position guidance devices, which can solve the above problems. [Summary of the Invention]

1227393 V. Invented the vertical bit rate of the power-saving party of the present invention. When the threshold value of the bit is shifted horizontally, that is, the lifting guide device does not fix the state of the power-saving party's trigger device. Take like. In order to set the guidance and guidance device at the optical position used by the change in the value, the main method of entering the Ming Dynasty is to shift the value horizontally, that is, to decrease the value and capture the fast moving sensor of the sensor. The secondary method of the Ming is to reduce the position of the device according to the value of the change in order to generate a large number of positions that do not need to generate a guide device and interrupt the mobile opticalization of the device, which mostly guides the position of the so-called power-saving position. The capture is slow, the purpose of capturing is to compare the amount of the image, and the vertical sensor shifts the value to take the image to control the image frequency to provide an image, and to control the frequency of the change in the capture of the constant displacement. The purpose is to provide Using a displacement sensor to turn off the sleep to drive can move the current through driving any electric current with or without a sleep mode. In this way, the amount of the image of the water sensor value of the light student is greater than that by which Power-saving optical 'for example mode, which senses the position of the displacement sensor to level out the displacement capture image change frequency, The upper door is guided by the method of the light image: mechanical and enter the sensor to capture the value of the device and the frequency of the image is less than the lower and the water threshold is the time position frequency. The advantages and effects of light in order to generate images. An optical position of the present invention is not to mention the use of the optical position to guide X 'to control the frequency of the image captured by the sensor. # Sa ” The horizontal displacement value and the vertical displacement ^ U determine the frequency of capturing the image. Because the user is still moving or moving very slowly, this saves the NVC _ knife. Furthermore, the optical position is used to guide the installation of the search. , Which generates a current in a fixed time to

Page 8 I227393 V. Description of the invention (5) " '-to move rV, and to set the camera = 1 to monitor whether the optical position guidance device has moved, up to =-displacement sensor to generate a current to interrupt The hibernation state, 'Electrical purpose. [Only application method] In order to make the effect more detailed, your review committee ’s understanding and understanding of the structural features and steps of the present invention will be better implemented. The explanation is as follows: The problem of the power consumption of the conventional technology of the optical position guidance device, the use of the optical position guidance device to move faster "control the frequency of a sensor to capture an image, different from the conventional technology of the second The frequency is a fixed value, regardless of the fast and continuous capture of images of the same frequency, so in this way, the darben dream = all power-saving users 0 χ Please refer to the second figure, which is one of the invention Flow chart of the power saving of the position guidance device in the preferred embodiment; as shown in the figure, the present invention is a power saving method of the optical position guidance device. The main steps include Y steps S10, which are captured by a sensor. Take a first image and take a picture. — Scene J Step S 1 2 'Compare the first image with the second image; Step S14, generate a horizontal displacement value of a parallel axis and the vertical position of the vertical axis. Shift value; ^ step S1 6 ′ to control the frequency of the image captured by the sensor according to the change amount of the horizontal displacement value and the vertical displacement value; and

Page 9 1227393 Five steps, description of the invention (6) --- An output period is proportional to the specific time (Frame rate) 乂 Output the horizontal and vertical displacement values. In step S10, 'the first image is a guide for the optical position, the image captured by the sensor, and the second image is the image captured by a frame time). And the first image and the second image are compared by a digital signal processor (Digitai Signal Process) to obtain the relative displacement of the beans relative to the vertical △ X and △ ”when the horizontal The displacement value and 1 ^ shift * value < change * "and" are * at-the upper threshold value p controls the sensor to increase the frequency of its captured image; when the value and the vertical displacement value are less than the lower position = Control the sensor to reduce the frequency of its captured images; when the water ^ 薅 value and the vertical displacement value change is large / fr ρη OgA ndtr U present value is less than the upper] loose value 'control the sensor Keep its capture image setting = install the same ΪΓ to control the induction: the frequency of the captured image is a fixed value. In addition to this sensor, another power saving method of the present invention is described below, the second , Which is an optical position of a comparative embodiment of the present invention The flow chart of the power saving in the sleep state; as shown in the figure, the main step of the power saving method of the bow device is step S20, which is captured by a sensor—the first image and the capture— Second shadow

1227393 V. Description of the invention (7) The second image, and the first image, step S 2 1, ratio m # is equal to the first step S22, | step S23, 丨 step S2 4 丨 step S25 I formula; and step S 2 6 The child is an image and a video; a first waiting period; and a second waiting period enters into the sleep mode; the current interrupts the sleep mode and a mechanical structure is inputted into the sensor to start capturing Take the image. In the case of two images, ^: ^ 22 and step S23, when the first image is equal to the first waiting period, it indicates that the optical position guidance device has not moved. At this time, a digital signal is passed, and the sensor is driven regularly. Go to capture the image and move it. If # = lu, the camera will monitor whether the optical position guides the camera to move or not.] When moving, it will enter the second waiting period, and it will be longer at n # 4. Timed timing drives the sensor to capture h, 'through the digital signal processor to monitor the optical position guidance device for movement. -Generally, because the intermittent mode will be entered in the second period, the period of driving the sensor to capture images during the first waiting period is greater than the period of driving the sensors to capture images during the first waiting period . If the optical position guidance device is still in the second waiting period, it will enter the sleep mode (S24). At this time, there will be no instruction to drive the sensor to extract the image. Does not waste current. In the present invention, the optical position guidance device will completely enter the dormant state, so that the sensor is not driven after a fixed period of time has elapsed.

1227393 I. Description of the invention (8) Capturing an image ’can achieve the goal of more power saving. The present invention uses a displacement sensor to sense the state of the optical position guidance device in a sleep state, so when a user moves the optical position guidance device again, a current can be input to interrupt the sleep mode 'and drive The sensor directly captures images (S 2 5). Finally, please refer to the fourth diagram A, the fourth B diagram, the fourth C diagram, the fourth D diagram, and the fourth E diagram, which are schematic diagrams of a mechanical structure to wake up the sleep mode according to a preferred embodiment of the present invention; As shown in the figure, in the fourth diagram A and the fourth diagram B, when the metal ball 1 1 0 of the mechanical structure 100 moves through the user, it will collide with a contact point 1 2 0 next to it. This mechanism generates a current to drive the sensor to manipulate the image, and as shown in the fourth figure C, it is transmitted. When the metal ball 11 0 is moved, it will touch a frame 1 3 0 to generate a current. Figure D, which shows an electric current generated through the contact between an upper cover 140 and the lower cover 150 through the movement of the upper cover, and the fourth E drawing, the upper cover 1440 and the lower cover 150 Through a floating design, when moving, the upper cover 140 and the lower modification 150 are connected to each other to generate a current. However, such structures are endless. For example, micro-electromechanical technology is directly placed on the semiconductor. In the manufacturing process, or adding a displacement sensor to the semiconductor, so long as it is produced through the displacement sensor A wake-up contact structure and function, the scope of the invention should be Ming. A detailed description is given below with a practical example: The resolution of the optical position guidance device (〇ptical resolution): 8 0 dpi (dot per inch) max. Moving speed: 12 ips (inch per sec)

Page 12122739 5. Explanation of the invention (9) max △ X or △ y = 800dpix 12 ips = 9600 dot per sec = 9.6 dot per ms Specific time (Frame rate): 1500FPS (Frame per sec) max. Moving Δ x, Δ y per Frame = 9600 dps / 1500 fps = 6.4 dpf (dot per Frame) △ x, Δ y / F = opt i cal resolutionx moving speed / Frame rate

Ntfov i \ Speed ^ Frame \ ra te ^ \ 1 # 10 ^ 12 ^ 15 ^ 20 ^ 50 0 ^ 1. 3. 6. 9. 12. 84 16 ^ 19.24 2 杪 32 # 10, 0. 1. 3_ 2 ,] 4 · 8 6. 9. 6 ^ 12 ^ 16, 1, 500 ^ 0 53 Let 1. 2 · 13. 3. 4. 3 ^ 3 5 · 3 '6. 4 ^ 8 ^ 10. 6 ^ 2000 ^ 0. ^ 0. 1. 2. 3. 4. 8 ^ 6 ^ 30 00 ^ 0 26 Let 0.55 ^ 1. 06 ^ 1. 6 ^ 2. 13 ^ 2. 6 ^; 3. 2 ^ 4 ^ 5.3 ^ 5000 ^ 0. 16 ^ 0 32 order 0.64+ 0. 96- 1. 28 ^ 1 04: 1. 9 ^ 2. 4 ^ 3. 2 ^ 10 000 · ， 0 08, 0 16 present 0_ 32 order 0. 48 ^ 0 60 0 8 '0. 964 1. 2 * 1. 6 ^ For example: △ x, △ y / F < 2 will decrease the frame rate, if eight χ △ y / F > 8 will increase the frame rate.

---- J 1227393

As shown in the figure, it can be known that the relative displacement of △ X and △ y will change with the moving frame rate, so the frame rate can be set by the values of △ χ and △ _. In summary, the present invention is a novelty 3. Progress for industrial users should comply with the undoubted provisions of China's patent law, and love to file an application for an invention patent in accordance with the law, 'Pray for fishing. The above description is only one of the present invention and is not intended to limit the implementation of the present invention. The example of the early morning Jiabeiyuan and Hsuo # $ # 状 、-Wai, Ju Fan according to the application of the present invention The shapes, features, and finishes described above should be included in this book. ^ ^ ^ "≪ All specializations have been set for optimality and requirements. The patent has been granted, and the patent model and repair 1227993 are simple. Explanation [Schematic description] The first diagram is a flowchart of the use of the optical position guidance device of the conventional technology. The second diagram is the optical position guidance device of a preferred embodiment of the present invention. Electricity flowchart; Third diagram: It is a flowchart of the power saving state of the optical position guidance device in a preferred embodiment of the present invention; Fourth A diagram: It is a preferred embodiment of the present invention Schematic diagram of the mechanical structure to wake up the sleep mode;

Figure 4B: It is a schematic diagram of a mechanical structure to wake up and sleep in another preferred embodiment of the present invention; Figure 4C: It is a mechanical structure to wake up and sleep in another preferred embodiment of the present invention The schematic diagram of the mode; the fourth D diagram: it is a schematic diagram of the mechanical structure to wake up the sleep mode according to another preferred embodiment of the present invention; and the fourth E diagram ... It is another preferred embodiment of the present invention The mechanical structure wakes up the sleep mode. [Reference number in the drawing]

1 0 0 Mechanical structure 110 Metal ball 1 2 0 Contact point 130 Frame 140 Upper cover 150 Lower cover

Page 15

Claims (1)

1227393 The main steps are as follows: 6. Patent application scope 1_ A power-saving method of an optical position guidance device uses a sensor to capture a first scene. Comparing the first image with the second horizontal displacement of a parallel axis Value; image and acquisition of the second image; image; value and vertical sleeve t-vertical displacement number according to the horizontal displacement value and the amount of change in the vertical displacement value to control the frequency of the image captured by the sensor; and The horizontal and vertical displacement values are rotated out of the optical position bow described in item 1 of the J application patent range when the power is saved under an output period. 'Where the first image is the optical position The bow guide device does not move as captured by the sensor. Party I asks for the power saving principle of the optical position bow guide device described in item 1 of the patent scope ^, wherein the first image and the second image are deducted through a digital signal (Digital Signai pr〇cess〇r) Or 〆 central processing unit or — = controller for comparison. The power saving system of the optical position guidance device described in the first item of the patent 4 patent scope is large, and when the amount of change in the horizontal displacement value and the vertical displacement value is at a higher threshold, the sensor is controlled to increase the Capture < frequency. The power saving system of the optical position guidance device described in Fang Qing's patent scope item 1 is small, wherein when the change amount of the horizontal displacement value and the vertical displacement value is below the lower threshold, the sensor is controlled to reduce the acquisition Shadow Page 16 1227393 VI. Patent application scope The frequency of the image. 6. The power saving method of the optical position guidance device as described in item 1 of the scope of patent application, wherein when the change amount of the horizontal displacement value and the vertical displacement value is greater than the lower threshold value and less than an upper threshold value, the control is performed. The sensor maintains the frequency of the captured image. 7. The power-saving method of the optical position guidance device according to item 1 of the scope of patent application, wherein the second image is an image captured after a specific time (Frame rate). 8. The power saving method of the optical position guidance device according to item 7 of the scope of patent application, wherein the specific time is directly proportional to the output period. 9. A power saving method for an optical position guidance device, which uses a displacement sensor to achieve power saving purposes. The main steps include: using a sensor to capture a first image and capturing a second image; Compare the first image with the second image, and the first image is equal to the second image; that is, continue for a first waiting period when there is no displacement; or continue a second waiting period; or enter a sleep mode; A current is input through a displacement sensor to interrupt the sleep mode; and the sensor starts capturing images. 10. The power saving method of the optical position guidance device according to item 9 of the scope of the patent application, wherein when entering the sleep mode, the sensor is not driven to detect whether the optical position guidance device has moved. Page 17 1227993 6. Application for patent scope 11. The power saving method of the optical position guidance device as described in item 9 of the scope of patent application, wherein the displacement sensor may be a mechanical structure or a semiconductor micro-electromechanical structure or a combination structure thereof Or any physically detectable structure. Page 18