CN102902466A - Image playing device capable of automatically adjusting display image and method for adjusting display image - Google Patents
Image playing device capable of automatically adjusting display image and method for adjusting display image Download PDFInfo
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Abstract
The invention discloses an image playing device capable of automatically adjusting a display image. The image playing device comprises a microprocessor, an image processor, a display screen and a space motion sensor connected with the microprocessor, wherein the image processor is connected with the microprocessor, and outputs images to the display screen; the space motion sensor senses related space displacement data generated by an external force applied on a display device, and transmits the related space displacement data to the microprocessor for processing, so as to generate a relative space displacement; and the image processor receives the relative space displacement and adjusts a display position of the adjusting image and outputs the display position to the display screen. The invention further provides a method for adjusting the display image based on the image playing device. A watcher can clearly watch an image without adjusting a realization range, so that the watch comfort degree can be increased. The image playing device provided by the invention is convenient to use in a shaking or non-still condition.
Description
[technical field]
The present invention relates to a kind of electronic installation of adjusting show image, relate in particular to a kind of method of image player and adjustment show image of portable automatic adjustment show image.
[background technology]
Along with extensively popularizing of image player, the use occasion of image player that is used for playing video is also more and more extensive.For example, in the travelling way, perhaps in the way of riding, when using image player to watch the image data such as video, image player is subject to outside vibrations, the show image of display screen easily rocks, and beholder's sight line also need to move realization with the rocking of display screen of vibrations, otherwise impact is watched.
Such as Fig. 1, the upper electron image that shows a leaf of the display screen 11a of the image player 1a of playing video, beholder's eyes 5a is in the situation that the display screen 11a of image player does not rock, watching the line-of-sight distance of the electron image of the upper leaf of display screen 11a is a1, if image player is subject to outside vibrations or rocks, image player rocks downwards, the electron image of shown leaf equally also relatively moves along with rocking downwards of image player downwards on the display screen, at this moment, it is a2 that beholder's eyes 5a watches the line-of-sight distance of the electron image of leaf on the display screen, therefore, be subject to the outside impact of rocking or shaking and in the situation about moving down at image player, the line-of-sight distance of beholder's eyes also need to be adjusted along with rocking of image player, the beholder can not clearly watch leaf in the short time image appears, the effect that impact is watched.
Although although image player is subject to externalities and rocks, (beholder's the position stability for example but visual line of sight of beholder's eyes is not affected, place the situation that rock the position of image player) or beholder's eyes when not moving, in such cases, the visual line of sight that the leaf that the display screen of image player occurs is departed from beholder's eyes causes beholder's eyes to watch the electron image of leaf of display screen fuzzy and affect viewing effect.
Therefore, need that development is a kind of can be subject to outside rolling dynamic deformation from motion and can automatically to adjust show image according to image player badly, the display device with the visual line of sight that adapts to the beholder then becomes the technical matters that solution is needed in current demonstration field badly.
[summary of the invention]
The invention provides a kind of image player of automatic adjustment show image, when image player is subject to outside vibrations, automatically adjust show image, do not affect image display and watch.
The present invention also further provides a kind of above-mentioned image player to adjust the method for show image, and the vibration displacement of detecting outside is adjusted the output display zone of show image to the impact of image display in good time, increases the comfortableness of watching.
For solving the problems of the technologies described above, the invention provides a kind of image player of automatic adjustment show image, comprise microprocessor, image processor and display screen, described image processor connection microprocessor and image output are to display screen, also comprise the spatial movement sensor that connects microprocessor, described spatial movement sensor sensing display device is subject to the space displacement data of External Force Acting generation and transfers to microprocessor processes generating the space displacement, and described image processor receives the space displacement and also adjusts the display position of image and export display screen to.
The image player of aforesaid automatic adjustment show image, described space displacement sensing device is Gravity accelerometer, gyroscope sensor.
The image player of aforesaid automatic adjustment show image, described microprocessor comprises demonstration adjustment control module, control module connection space motion sensor is adjusted in described demonstration, and described demonstration automatic regulating module receives outside instruction and receives the space displacement data of spatial movement sensor and process and generates described space displacement.
The image player of aforesaid automatic adjustment show image, the viewing area of described display screen comprises to be reserved the viewing area and adjusts the viewing area, reserving the viewing area is the viewing area of display screen edge, and adjusting the viewing area is the viewing area at display screen center.
The present invention also further provides a kind of image player of above-mentioned automatic adjustment show image to adjust the method for show image, comprises the steps:
(1) whether inquiry receives the instruction that starts the show image self-regulation mode, if start demonstration
The image adjustment modes if not, continues inquiry;
(2) viewing area of display screen is divided into reservation viewing area and adjustment viewing area;
(3) show image with output is contracted to the first image of adjusting the viewing area demonstration and exports adjustment to
The viewing area shows;
(4) the first display position of record the first image;
(5) whether receive the space displacement data of spatial movement sensor, if, enter next step, if not, continue to receive;
(6) the space displacement data that receives is converted to two-dimentional relative displacement side-play amount, and processes generation the second display position according to the first display position and two-dimensional migration amount;
(7) judge whether the second display position exceeds the reservation viewing area, if show the first image according to the first display position; If not, enter next step;
(8) the first image is shown according to the second display position;
(9) whether receive and close the show image self-regulation mode, if, enter step, if not, with the show image of current output as the first image and execution in step (4);
(10) recover the full screen display pattern that show image is exported.
The method of aforesaid adjustment show image, in the described step (4), the first display position of described record the first image is that the displaing coordinate of the just pixel of any point of the first image is as the reference coordinate of the first display position.
The method of aforesaid adjustment show image in the described step (7), describedly judges whether the second display position exceeds that to reserve the viewing area be coordinate comparison with the indication range of the reservation viewing area of described the second display position and display screen.
The method of aforesaid adjustment show image, the indication range of described reservation viewing area are that the coordinate of reservation indication range is the coordinate of reserving the show image pixel of indication range.
The method of aforesaid adjustment show image, two-dimensional migration amount described in the described step (6) comprise two-dimensional phase to space displacement distance and two-dimensional phase to the space displacement direction.
The method of aforesaid adjustment show image, the directional data of the space displacement of described two-dimentional relative displacement are the directions with the opposite direction of the space displacement of display screen.
From the above, image player of the present invention is by the acting force of the spatial movement of the suffered outside of the spatial movement sensor sensing image playing device that arranges, and with the acting force of a spatial movement conversion position space displacement, microprocessor relatively moves show image according to the space displacement, even in the situation that image player is received External Force Acting and is rocked, the beholder need not to adjust the realization scope and gets final product the clear image of watching, increase watch comfortable, be convenient to image player of the present invention rock or astatic environment in use.
[description of drawings]
Fig. 1 is the viewing effect comparison diagram of the display screen of the image player of prior art when being subject to external force and rocking.
Fig. 2 is the structured flowchart of the image player of automatic adjustment show image of the present invention.
Fig. 3 a, 3b, 3c are the viewing effect comparison diagram of image player of the present invention when being subject to the double swerve acting force.
Fig. 4 a, 4b, 4c are the viewing effect comparison diagram of image player of the present invention when being subject to teetertottering acting force.
Fig. 5 is the method flow diagram that image player of the present invention is subject to automatically adjusting when dynamic deformation from motion is shaken in the outside show image.
[embodiment]
Reach technological means and the effect that predetermined purpose is taked for further setting forth the present invention, below in conjunction with drawings and Examples, to the specific embodiment of the present invention, architectural feature and effect thereof, be described in detail as follows.
The image player of automatic adjustment show image of the present invention goes for the display device of various image players, rock or the acting force such as vibrations in order to the suffered outside of the display device of sensing image playing device, for example, watch onboard when using image player of the present invention, image player is subject to the shock effect power of Vehicle Driving Cycle and when rocking, can automatically adjust the shown show images such as image of display device, the acting force of avoiding shaking force or rocking is on the impact of the show image of display device, do not affect beholder's viewing effect, the adjustment adaptive faculty of the automatic adjusting show image of the demonstration of raising display device.
Such as Fig. 2, the image player of automatic adjustment show image of the present invention comprises microprocessor, image processor, storer, display screen and spatial movement sensor, spatial movement sensor and display screen connect respectively microprocessor, and the displacement of the spatial movement of the image player that senses by the microprocessor processes sensor, be converted to show image and need to adjust the display position of demonstration, image processor will adjust show three, display position export display screen to and show show image after adjusting.
Such as Fig. 3, the effect schematic diagram that the applied external force that is given a shock or rocks for image player of the present invention is rocked to the right.Such as Fig. 3 a, start the show image self-regulation mode of image player 1 of automatic adjustment show image of the present invention the user after, the viewing area of the display screen 11 of image player 1 of the present invention is adjusted into to be adjusted viewing area 112 and reserves viewing area 111, be the convenience expressed and clear, reserve the viewing area and adjust the viewing area at Fig. 3 a, distinguished by the dotted line 31 of supposition among the 3c, the viewing area of the display screen in dotted line 31 frames is to adjust viewing area 112, and the on-screen display (osd) area of the display screen edge that the dotted line frame is outer is for reserving viewing area 111.Certainly, in specific embodiment, dotted line does not exist, and still, can be the image background of greyscale color reserving the viewing area output display.Image player of the present invention is after starting the demonstration self-regulation mode, image processor will need the area scaled down of viewing area of the image exported to the specialized range of adjusting the viewing area, when not sensing vibration, reserve the viewing area then without showing image output, image processor is automatically adjusted the demonstration that is shown as the gray scale background of reserving the viewing area is set.Image player is not subject to outside acting force, and under stable state, it is S0 that the beholder watches the line-of-sight distance of place's image of image 21 of the leaf of display screen, and the image 21 of leaf is being adjusted viewing area 21 interior demonstrations.
Such as Fig. 3 b, image player 1 is subject to acting force to the right, display screen rocks to the right also so that display screen moves right apart from S1, the image 21 of the leaf of the display screen 11 of the image player of prior art is also along with display screen 11 moves right same apart from S1, therefore, the beholder watches the line-of-sight distance of the leaf on the display screen to exceed original visual line of sight, in such cases, the line-of-sight distance S1 of the image of beholder's eye distance leaf need to be along with the distance of the same skew S2 of moving right of display screen 11, otherwise the beholder can not watch same image in former visual line of sight.The sight line offset distance S2=S1 of beholder's eyes, the acting force that image player is rocked to the right and when moving right, beholder's eyes also need equally along with the rocking and the same displacement that moves right to the right of display screen, and the image that could keep watching is not subjected to rocking of applied external force and affects the effect of watching.The present invention is in specific embodiment, the spatial movement sensor is used for the sensing display screen in X, the Y in space, the data on Z axis three direction of principal axis, wherein, X, Y-axis represent the horizontal and vertical of the residing plane of display screen, and Z axis is perpendicular to the coordinate axis on display screen plane of living in.Because X, the skew on the Y direction is to the skew on the Z axis of people's visual impact.Therefore, microprocessor only receives and processes the space relative displacement data on X, the Y direction.With the X that receives, the space relative displacement data of the display screen of Y direction, the selected reference coordinate of the first display position that is not subject to the first image of space relative displacement impact with display screen compares union, can calculate display screen relative displacement side-play amount spatially, this relative displacement side-play amount comprises offset coordinates data and directional data, the relative displacement side-play amount that microprocessor calculates all coordinate datas of the first display position accordingly generates the second display position, in calculation process, the directional data of the space displacement of described relative displacement side-play amount is the direction with the opposite direction of the space relative displacement of display screen.
Such as Fig. 3 c, image player of the present invention is rocked and displacement S3 to the right, the spatial movement sensor senses the suffered space displacement of rocking of image player to the right, microprocessor receives the space displacement and is converted to the displacement S3 of two dimension, show that the image of the leaf of output then relatively moves the distance of S3 to the viewing area in the left side of display screen, wherein, the displacement S3=S1 that the image of leaf is moved to the left, the distance that the image 21 ' of leaf is moved to the left S3 exceeds the viewing area scope of adjusting the viewing area, enter into and reserve the viewing area, reserving the viewing area becomes for the viewing area that shows a part of leaf image.When being moved to the left, the image 21 ' of image processor output leaf exceeds when adjusting the viewing area and entering the image of reserving the viewing area, microprocessor sends the display mode transformation directive, start whole demonstrations of reserving the viewing area, reserve the viewing area and become full viewing area with the adjustment viewing area, the Zone Full of display screen is all in order to the demonstration of image, display screen becomes the viewing area of full screen, and reserving the viewing area no longer is that gray scale shows.The image 21 ' of leaf is offset distance S3 left, enter and reserve the viewing area, range of vision with respect to the beholder, the visual line of sight of eyes need not along with moving right of display screen any adjustment such as mobile, the display position L3 of the image of the leaf when display position L1 and the image player of image that start to show the leaf of the display screen behind the self-regulation mode is not subject to any external force and rocks image is consistent, for example, the picture point W1 at the rightmost edge of the image 21 ' of leaf is positioned on the line of sight H1 of same sight line.Therefore, after the demonstration self-regulation mode of image player of the present invention starts, the display position of the image 21 ' of the leaf of display screen be not subjected to outside rocking and the video image evaluation person watch visual line of sight, the show image of display screen can be adjusted to automatically according to rocking of outside the display position under the state that is rocked, be convenient to watching of beholder, increase comfortableness and the adaptability of watching.
Such as Fig. 4 a, 4b, 4c, the self-adjusting effect schematic diagram of show image when being subject to rocking downwards for the display screen of image player of the present invention.Such as Fig. 4 a, state when the display screen 11 of image player of the present invention is not subject to outside rolling dynamic deformation from motion, the border that display screen represents is by a dotted line divided into display screen and is reserved the viewing area and adjust the viewing area, the image processing of the shown output of image processor is dwindled to adjust becomes the ratio of adjusting the required demonstration in viewing area, the image of image processor output only shows in adjusting the viewing area scope, and the image 21 of the leaf that display screen is shown is positioned at the zone of adjusting the viewing area.Reserve the display background that is shown as gray scale of viewing area.
Such as Fig. 4 b, for after the image player of prior art is subject to outside downward rolling dynamic deformation from motion, the distance that display screen moves down is S4, the distance that the image 21 of the leaf of display screen 11 also moves down thereupon is S5, and S4=S5, beholder's eyes need to watch display screen to be subject to the image that External Force Acting rocks the leaf of rear demonstration, the eyesight distance of visual line of sight is S6, consult Fig. 3 a, image player is not when being subject to outside rolling dynamic deformation from motion, the eyesight distance of beholder's visual line of sight is S7, be not subject to eyesight under the external force impact apart from S7 with respect to image player, the beholder need to be adjusted into S6 with the eyesight distance of visual line of sight, if the beholder fails in time to adjust the line-of-sight distance of its eyesight, then possibly can't clearly see the image of leaf, even can't watch the image of leaf, affect viewing effect, bring great inconvenience to the beholder.
Such as Fig. 4 c, after image player of the present invention starts the demonstration self-regulation mode, reservation viewing area and adjustment viewing area all become the viewing area for show image, display screen becomes the demonstration of full screen, the displaying ratio that the viewing area is adjusted in adaptation after the image of the demonstration that image processor is exported remains to adjust shows, that is to say, the image of image processor output display remains with scaled down show image and shows.The acting force that image player is rocked downwards, the distance that display screen moves down is S4, the displacement that sensor senses the distance that display screen moves down is S4, processor is processed received displacement S4, the image that is converted into display screen moves side-play amount, the image 21 of leaf " the display position of image of display position and the image player leaf when not being subject to outside rolling dynamic deformation from motion consistent; such as Fig. 4 c; represented the image 21 of leaf " the end points W2 of lower side as a reference point, can learn, image player of the present invention is in the front and back that are subject to outside acting force, the end points of the lower side of the image of leaf unanimously is positioned on the axis H3, for the beholder, the range of vision that need not the beholder is done any adjustment can the clear image of watching.Therefore, image player of the present invention being subject to that the outside effect of rocking is rocked downwards so that after display screen moves down apart from S, the image of display screen is adjusted show image and the S5 that moves up automatically according to the displacement of display screen, the image that has guaranteed the demonstration of display screen is not subject to the image of outside downward rolling dynamic deformation from motion and affects watching of beholder, beholder's eyesight need not done any adjustment can cosily watch image, improves the adaptability of the demonstration output of display screen.
For ease of explanation, in the above embodiments, only enumerated that display screen is subject to rolling dynamic deformation from motion to the right and the situation of rocking or rocking to the right downwards, in specific embodiment, when display screen also can sense the outside dynamic deformation from motion of rolling left and rocks left, the show image of display screen is then adjusted the displacement of moving when display screen rocks to the right left automatically, so that the show image of the display screen that rocks left is not subject to the impact that display screen rocks left, does not also affect the beholder and watches.When the display screen of image player of the present invention also can sense and move to top-right rolling dynamic deformation from motion and to the upper right side, show that automatic regulating module also can rock effect to top-right according to what sensor sensed, and the below is mobile left to the image processor image that display screen is shown to send instruction after processing, so that the acting force that the image of display screen is not rocked and affect watching of beholder.Those skilled in the art can be according to the above embodiments of the present invention, implement according to this to work as display screen to upper left movement, move the lower-left or the two-dimensional movement distance in plane space such as is moved in the bottom right, and then the image of adjusting the demonstration of display screen is realized not rocking or the image when mobile with respect to the display position of beholder's eyes, so that even the beholder is when display screen is subject to rocking of outside bivector or Influence of Displacement, what also need not to adjust sight line watches scope and line-of-sight distance, increase the comfort level of watching, even be convenient to the hand-held image player of the present invention of user in the environment that rocks, for example onboard, wait the show image that all can cosily watch display screen.
Such as Fig. 5, the display screen of image player of the present invention is adjusted the method for show image automatically, comprises following step:
(1), query statement, the instruction of the outside that the detecting of the query statement of microprocessor receives; Receive the instruction that starts the show image self-regulation mode? if the show image self-regulation mode of startup display screen enters next step, if not, then continue inquiry and whether receive instruction;
(2), the full screen viewing area of display screen is divided into reservation viewing area and adjustment viewing area;
(3), the show image of output being contracted to the dimensions of adjusting the viewing area generates the first image and output and adjusts at least the viewing area and show;
(4), the first display position of record the first image, with the displaing coordinate of the pixel of any point of the first image reference coordinate as the first display position, in specific embodiment, for example, with 1 W1 of the rightmost side of the petiole of the maple leaf image among Fig. 3 a as the reference coordinate;
(5), whether detecting receive the space displacement data of spatial movement sensor, if, enter next step, if not, continue detecting and also receive the space displacement data;
(6), the space displacement data that receives is converted to the relative displacement side-play amount of two dimension, and process according to the relative displacement side-play amount of the first display position and two dimension and to generate the second display position; In the specific embodiment, the space displacement data that receives is three-dimensional displacement data, because display screen non-displacement on the direction of the longitudinal axis, therefore the displacement on y direction is zero, actual space displacement is X, displacement on the Y-direction, according to X, the data of the reference coordinate of the displacement data on the Y-direction and the first display position can calculate display screen relative displacement side-play amount spatially, comprise offset coordinates data and directional data, the relative displacement side-play amount that microprocessor calculates all coordinate datas of the first display position accordingly generates the second display position, in calculation process, the directional data of the space displacement of the relative displacement side-play amount of described two dimension is the direction with the opposite direction of the space displacement of display screen;
(7), judge whether the second display position exceeds the reservation viewing area, if, show the first image according to the first display position, if not, enter next step, in the specific embodiment, judge whether the second display position exceeds that to reserve the viewing area be with the coordinate of the indication range of the reservation viewing area of described the second display position and display screen relatively, describedly judge whether the second display position exceeds that to reserve the viewing area be coordinate comparison with the indication range of the reservation viewing area of described the second display position and display screen; In specific embodiment, the indication range of described reservation viewing area is that the coordinate of reservation indication range is the coordinate of reserving the show image pixel of indication range.
(8), the first image is shown according to the second display position;
(9), whether receive and close the show image self-regulation mode, if, enter next step, if not, with the show image of current output as the first image and execution in step (4);
(10) display mode of the full screen viewing area of recovery show image output.
In sum, the image player of automatic adjustment show image of the present invention is by set spatial movement sensor, and the method for automatic adjustment show image that the present invention is based on the display device of above-mentioned automatic adjustment show image, by sensing applied external force and starting the show image self-regulation mode, according to rocking or migration power of the suffered outside of the display screen that senses, the displacement of correspondingly adjusting the suffered applied external force of display screen and producing and so that show image and display screen not to be subject to the display position of show image of applied external force consistent, for the beholder, in the situation that moves or rock even display screen is subject to External Force Acting, the beholder also need not to adjust visual line of sight work line-of-sight distance, and movement gets final product the clear image of watching along with the movement of display screen, make things convenient for the beholder stable lasting, clearly watch the output of the show image of display screen, increase comfortableness and the stability of watching, be suitable in the environment that easily is subject to applied external force or jolts, also can clearly be convenient to use the use of the image player with display screen of the present invention, be convenient to image player of the present invention rock or astatic environment in use.
Claims (10)
1. image player of automatically adjusting show image, comprise microprocessor, image processor and display screen, described image processor connection microprocessor and image output are to display screen, it is characterized in that, also comprise the spatial movement sensor that connects microprocessor, described spatial movement sensor sensing display device is subject to the space displacement data of External Force Acting generation and transfers to microprocessor processes generating the space displacement, and described image processor receives the space displacement and also adjusts the display position of image and export display screen to.
2. the image player of automatic adjustment show image according to claim 1 is characterized in that, described space displacement sensing device is Gravity accelerometer, gyroscope sensor.
3. the image player of automatic adjustment show image according to claim 1, it is characterized in that, described microprocessor comprises demonstration adjustment control module, control module connection space motion sensor is adjusted in described demonstration, and described demonstration automatic regulating module receives outside instruction and receives the space displacement data of spatial movement sensor and process and generates described space displacement.
4. the image player of automatic adjustment show image according to claim 3, it is characterized in that, the viewing area of described display screen comprises to be reserved the viewing area and adjusts the viewing area, reserving the viewing area is the viewing area of display screen edge, and adjusting the viewing area is the viewing area at display screen center.
5. the method for an image player adjustment show image as claimed in claim 1 comprises the steps:
(1) whether inquiry receives the instruction that starts the show image self-regulation mode, if, start the show image adjustment modes, if not, continue inquiry;
(2) viewing area of display screen is divided into reservation viewing area and adjustment viewing area;
(3) show image with output is contracted to the first image of adjusting the viewing area demonstration and exports the demonstration of adjustment viewing area to;
(4) the first display position of record the first image;
(5) whether receive the space displacement data of spatial movement sensor, if, enter next step, if not, continue to receive;
(6) the space displacement data that receives is converted to two-dimentional relative displacement side-play amount, and processes generation the second display position according to the relative displacement side-play amount of the first display position and two dimension;
(7) judge whether the second display position exceeds the reservation viewing area, if show the first image according to the first display position; If not, enter next step;
(8) the first image is shown according to the second display position;
(9) whether receive and close the show image self-regulation mode, if, enter step, if not, with the show image of current output as the first image and execution in step (4);
(10) recover the full screen display pattern that show image is exported.
6. the method for adjustment show image according to claim 5, it is characterized in that, in the described step (4), the first display position of described record the first image is that the displaing coordinate of the just pixel of any point of the first image is as the reference coordinate of the first display position.
7. the method for adjustment show image according to claim 5, it is characterized in that, in the described step (7), describedly judge whether the second display position exceeds that to reserve the viewing area be coordinate comparison with the indication range of the reservation viewing area of described the second display position and display screen.
8. the method for adjustment show image according to claim 7 is characterized in that, the indication range of described reservation viewing area is that the coordinate of reservation indication range is the coordinate of reserving the show image pixel of indication range.
9. the method for adjustment show image according to claim 8 is characterized in that, the relative displacement side-play amount of two dimension described in the described step (6) comprises the space relative displacement distance of two dimension and the space relative displacement direction of two dimension.
10. the method for adjustment show image according to claim 9 is characterized in that, the directional data of the space relative displacement of described two-dimentional relative displacement is the direction with the opposite direction of the space displacement of display screen.
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| CN 201110213371 CN102902466A (en) | 2011-07-28 | 2011-07-28 | Image playing device capable of automatically adjusting display image and method for adjusting display image |
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| CN 201110213371 CN102902466A (en) | 2011-07-28 | 2011-07-28 | Image playing device capable of automatically adjusting display image and method for adjusting display image |
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| CN106527763B (en) * | 2016-10-31 | 2020-02-04 | 维沃移动通信有限公司 | Method for adjusting position of display object and mobile terminal |
| CN111142720A (en) * | 2018-11-06 | 2020-05-12 | 比亚迪股份有限公司 | Vehicle-mounted machine screen rotation display method and device |
| CN111142720B (en) * | 2018-11-06 | 2022-02-08 | 比亚迪股份有限公司 | Vehicle-mounted machine screen rotation display method and device |
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