[0043]Generally speaking, the best angle for the user to view the screen is that the head is aligned with the center of the screen. Therefore, the current method of limiting the viewing angle of the screen is to limit the viewing range of the screen to a certain angle on the front of the screen. However, the viewing angle of the handheld electronic device may change at any time due to the user's holding method, viewing posture, or external light. At this time, it is necessary to find out the tilt of the handheld electronic device. The angle or the displacement of the user, and correct the viewing angle of the screen in a timely and appropriate amount, so that the user can still see the screen in various situations. The present invention is a set of methods and devices for dynamically adjusting the viewing angle of the screen developed based on the above concept. In order to make the content of the present invention clearer, the following embodiments are specifically cited as examples on which the present invention can indeed be implemented.
[0044] figure 1 It is a block diagram of a device for dynamically adjusting the viewing angle of the screen according to an embodiment of the present invention. Please refer to figure 1 The adjustment device 100 of this embodiment includes a screen 110, a sensor 120, and a control unit (not shown in the figure). The sensor 120 is adapted to detect the tilt angle of the adjustment device 100 or the displacement of the user, and the control unit Accordingly, the visible range of the screen 110 is adjusted. The adjustment device 100 is, for example, a handheld electronic device such as a mobile phone, a personal digital assistant or a notebook computer, and the screen 110 is an adjustable viewing angle screen. The functions of each component in the adjustment device 100 are respectively introduced below:
[0045] The screen 110 has an adjustable viewing range, which is the range covered by a viewing angle that the user can watch the screen with adjustable viewing angles, and the screen 110 includes a layer of liquid crystal material (not shown) Through the conversion of the liquid crystal material, the screen 110 can shield the light from its backlight source (not shown) and send it out of the visible range, so as to prevent the screen 110 from being peeped by outsiders.
[0046] The sensor 120 is used to detect the deviation of the target from the visible range of the screen 110. In detail, the sensor 120 is, for example, an acceleration sensor (G sensor), which can detect the offset of the current plane of the screen 110 from its normal reference plane; on the other hand, the sensor 120 can also be an image sensor, and The image of the screen 110 is captured by capturing the target, and the offset of the target from the visible range of the screen 110 is determined according to the position of the target in the image. Wherein, the target object is, for example, the user's face area or eye area, and its scope is not limited.
[0047] It is worth noting that when the sensor 120 detects the offset, the adjustment device 100 dynamically adjusts the visible range of the screen 110 according to the offset, so that the visible range of the screen 110 includes the target. Hereinafter, another embodiment will be given to illustrate the detailed steps of the present invention using the adjusting device 100 to dynamically adjust the viewing angle of the screen.
[0048] figure 2 It is a flowchart of a method for dynamically adjusting the viewing angle of a screen according to an embodiment of the present invention. Please refer to figure 2 This embodiment is suitable for adjusting the visual range of the screen of a handheld electronic device. Wherein, the handheld electronic device is, for example, a mobile phone, a personal digital assistant, or a notebook computer, and its screen is an adjustable viewing angle screen. The detailed steps of the method of this embodiment are described below:
[0049] First, a sensor arranged on the handheld electronic device is used to detect the deviation of the target from the visible range of the screen (step S210). Among them, analysis can cause the user's (target) viewing angle to deviate from the visible range of the screen. It can be found that it can be divided into two situations: one is the situation where the user does not move while the handheld electronic device is moving. The position or angle of the device itself may deviate from the user’s perspective due to the user’s holding method or placement; the other is the case where the handheld electronic device does not move while the user moves. When the posture or orientation of the user watching the screen changes, the viewing angle will naturally deviate from the visual range of the screen.
[0050] The above two situations will cause a change in the relative position between the handheld electronic device and the user. In this embodiment, for these two situations, the sensor disposed on the handheld electronic device is used to detect the deviation of the target from the visible range of the screen. As the basis for subsequent adjustment of the visible range of the screen. Among them, the above-mentioned visible range represents the range covered by the viewing angle of the screen that the user can watch, and the target object includes the user's face area or eye area, etc., which can represent the user's actual View the area of the screen position without limiting its range.
[0051] After obtaining the offset of the target object from the visible range of the screen, this embodiment uses the characteristics of the adjustable viewing angle screen to adjust the visible range of the screen according to the measured offset to make the visible range of the screen Include the target (step S220). In detail, the adjustable viewing angle screen uses the conversion of the liquid crystal material of the screen to shield the light sent by the screen backlight, so that the visible range of the screen is limited to a certain angle. In this embodiment, after the offset is obtained, the orientation of the viewing angle of the screen to be adjusted can be determined according to the magnitude of the offset, and then the liquid crystal material of the screen is dynamically converted to shield the screen backlight from sending to outside the visible range. Light, only the light sent to the visible range is reserved. Accordingly, the objective of the present invention to dynamically adjust the viewing angle of the screen to prevent others from peeping can be achieved.
[0052] It is worth mentioning that the present invention also provides corresponding solutions for the above two situations where the relative position between the handheld electronic device and the user changes. The following will give a detailed description of each embodiment.
[0053] In view of the situation where the user does not move while the handheld electronic device moves, the handheld electronic device needs to know the magnitude of its own displacement to be able to calculate its deviation from the area where the user is located, and adjust the visible range of the screen accordingly.
[0054] image 3 It is a flowchart of a method for dynamically adjusting the viewing angle of a screen according to an embodiment of the present invention. Please refer to image 3 In this embodiment, the acceleration sensor is used to detect the displacement of the handheld electronic device itself, so as to adjust the visual range of the screen of the handheld electronic device accordingly. Wherein, the handheld electronic device is, for example, a mobile phone, a personal digital assistant, or a notebook computer, and the screen is an adjustable viewing angle screen.
[0055] To know the displacement of the handheld electronic device, it is necessary to define a reference plane as a basis for subsequent judgment. Therefore, in this embodiment, when the handheld electronic device is started, the acceleration sensor is first used to detect the tilt angle of the screen in normal use to determine a Reference surface (step S310). Among them, since each user is accustomed to using (or currently using) the handheld electronic device is different, the state of placing or holding the handheld electronic device will also change accordingly, so this embodiment detects in advance the tilt of the screen during normal use The angle is used to determine the reference plane as the basis for subsequent judgments.
[0056] When the user actually operates the handheld electronic device, the handheld electronic device continues to use the acceleration sensor to detect the current change in the tilt angle of the screen plane to determine whether the screen plane deviates from the originally defined reference plane (step S320), if it is determined that the screen plane deviates For the reference plane, the offset of the plane from the reference plane is further detected (step S340), as a basis for subsequent adjustment of the visible range of the screen; otherwise, if it is determined that the screen plane does not deviate from the reference plane, the original screen display is still maintained State without changing the visual range of the screen (step S330).
[0057] After obtaining the offset of the screen plane, the handheld electronic device can dynamically adjust the visible range of the screen according to the offset so that the visible range of the screen includes the target (ie, the user) (step S350). The method of adjusting the visible range of the screen is as described in the previous embodiment, which can be achieved by switching the liquid crystal material of the screen, so the details are not repeated here.
[0058] With the above method, the handheld electronic device can adjust the visual range of the screen according to its own displacement at any time to achieve the purpose of dynamic adjustment. For example, when it is determined that the screen plane is shifted to the right, the handheld electronic device can adjust the visible range of its screen to the left, so that the user can still watch the screen. Figure 4 It is a schematic diagram of a method for dynamically adjusting the viewing angle of a screen according to an embodiment of the present invention. This example uses figure 1 The shown adjusting device 100 dynamically adjusts the visual range of the screen 110, please refer to figure 1 The visible range of the screen 110 is a range encompassed by a viewing angle of 30 degrees. At this time, the user's eyes 130 are still maintained on the front of the screen 110, so that the screen 110 can be viewed. However in Figure 4 In this case, the screen 110 has turned to the right, and the visible range of the screen 110 (shown by the dotted line) is also turned accordingly. At this time, the sensor 110 (in this embodiment, the acceleration sensor) of the adjustment device 100 detects the The offset is 15 degrees, so the handheld electronic device 100 will adjust the viewing range of the screen 110 to the left by 15 degrees, so that the user's eyes 130 can still see the screen 110.
[0059] On the other hand, for the situation where the handheld electronic device does not move and the user moves, the handheld electronic device needs to know the magnitude of the user's displacement before it can calculate the offset of the user's area from the visible range of the screen, and then Adjust the visible range of the screen.
[0060] Figure 5 It is a flowchart of a method for dynamically adjusting the viewing angle of a screen according to another embodiment of the present invention. Please refer to Figure 5 This embodiment is suitable for using the image sensor to detect the displacement of the target object, so as to adjust the visible range of the screen of the handheld electronic device accordingly. Wherein, the handheld electronic device is, for example, a mobile phone, a personal digital assistant, or a notebook computer, and the screen is an adjustable viewing angle screen.
[0061] First, the image sensor is used to capture the image of the target viewing screen (step S510). Wherein, the target object is, for example, the user's face area or eye area, and the image sensor is, for example, a Charge-Coupled Device (CCD) camera generally arranged on a handheld electronic device. It is used to take pictures of the user's conversation.
[0062] In this embodiment, an image sensor is used to capture a picture of a user operating a handheld electronic device, and an image processing mechanism such as face recognition is used to find the position of the target in the picture to determine whether the target deviates from the visible range of the screen ( Step S520). Among them, the handheld electronic device determines whether the target object deviates from the visible range of the screen, for example, by determining whether the position of the target object in the screen deviates from the center of the screen.
[0063] If it is determined that the target has deviated from the visible range of the screen, the handheld electronic device will determine the offset of the target from the visible range of the screen according to the position of the target in the image (step S540), as a subsequent adjustment screen The basis of the visual range; on the contrary, if it is determined that the screen plane does not deviate from the reference plane, the original display state of the screen is still maintained without changing the visual range of the screen (step S530).
[0064] After obtaining the offset of the screen plane, the handheld electronic device can dynamically adjust the visible range of the screen according to the offset, so that the visible range of the screen includes the target (step S550). The method of adjusting the visible range of the screen is as described in the previous embodiment, which can be achieved by switching the liquid crystal material of the screen, so the details are not repeated here.
[0065] With the above method, the handheld electronic device can adjust the visual range of the screen according to the user's position at any time, achieving the purpose of dynamic adjustment. For example, when it is determined that the user's position is shifted to the right, the handheld electronic device can adjust the visible range of its screen to the right, so that the user can still watch the screen. Figure 6 It is a schematic diagram of a method for dynamically adjusting the viewing angle of a screen according to another embodiment of the present invention. This example also uses figure 1 The shown adjusting device 100 dynamically adjusts the visual range of the screen 110, please refer tofigure 1 The visible range of the screen 110 is a range encompassed by a viewing angle of 30 degrees. At this time, the user's eyes 130 are still maintained on the front of the screen 110, so that the screen 110 can be viewed. However in Figure 6 In this case, the position of the user's eyes 130 has moved to the right. At this time, analyzing the image taken by the sensor 120 (in this embodiment, the image sensor) of the adjustment device 100, it can be found that the user's eyes 130 have deviated from the original screen 110. The viewing range (shown by the dotted line), and its offset is 15 degrees, at this time the adjustment device 100 controls its screen 110 to adjust its viewing range to the right by 15 degrees, so that the user's eyes 130 can still see the screen 110 screen.
[0066] With the above method, whether the position of the handheld electronic device is changed, or the direction of the user viewing the screen is changed, the detection of the sensor and the adjustment of the visible range of the screen allow the user to see the screen picture anytime and anywhere. Content without having to laboriously adjust manually.
[0067] It is worth mentioning that the adjustment method of the present invention can also be applied to handheld electronic devices that can automatically control screen movement. In detail, this handheld electronic device is equipped with a screen position adjuster to adjust the position and angle of the screen. With the aforementioned adjustment method, the handheld electronic device can move the visible range of the screen to the target in stages according to the offset measured by the sensor.
[0068] for example, Figure 7 It is a flowchart of a method for dynamically adjusting the viewing angle of a screen according to an embodiment of the present invention. Please refer to Figure 7 This embodiment is suitable for adjusting the visual range of the screen of a handheld electronic device. Wherein, the handheld electronic device is, for example, a mobile phone, a personal digital assistant, or a notebook computer, and its screen is an adjustable viewing angle screen. The detailed steps of the method of this embodiment are described below:
[0069] First, a sensor arranged on the handheld electronic device is used to detect the deviation of the target object from the visible range of the screen (step S710). Among them, the method of detecting the offset is, for example, using an acceleration sensor to detect the offset of the handheld electronic device itself, or using an image sensor to detect the offset of the target object. The detailed methods of these two methods have been implemented previously. It is stated in the example, so I won't repeat it here.
[0070] After the offset is measured, the screen position adjuster is used to adjust the position and angle of the screen to make the screen face the target (step S720). The screen position adjuster is, for example, a steering device disposed between the host of the handheld electronic device and the screen, and can be used to rotate the position and angle of the screen so that the front of the screen faces the area where the user is.
[0071] After adjusting the position and angle of the screen, the handheld electronic device will again use the sensor to detect the offset of the target object from the visible range of the screen (step S730), and dynamically adjust the visible range of the screen according to the offset, so that The visible range of the screen includes the target (step S740). To put it simply, this embodiment can be regarded as first using the screen position adjuster to rotate the screen to roughly adjust the visual range of the screen, and then use the feature of the screen to adjust the viewing angle to fine-tune the visual range of the screen, and finally achieve rapid The purpose of adjusting the visual range of the screen.
[0072] In summary, the method and device for dynamically adjusting the viewing angle of the screen of the present invention uses an acceleration sensor or an image sensor disposed on the handheld electronic device to detect changes in the relative position between the handheld electronic device and the user, and adjust the screen timely The visible range. Accordingly, in addition to preventing the content of the screen from being peeped by outsiders, the automatic adjustment mechanism also allows the user to see the content of the screen under any circumstances, increasing the convenience of the user in operating the handheld electronic device.
[0073] Although the present invention has been disclosed as above in the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be as defined in the claims.
