CN102340585A - Dual-screen electronic device and display method and display chip thereof - Google Patents
Dual-screen electronic device and display method and display chip thereof Download PDFInfo
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- CN102340585A CN102340585A CN2010102374311A CN201010237431A CN102340585A CN 102340585 A CN102340585 A CN 102340585A CN 2010102374311 A CN2010102374311 A CN 2010102374311A CN 201010237431 A CN201010237431 A CN 201010237431A CN 102340585 A CN102340585 A CN 102340585A
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Abstract
The invention discloses a dual-screen electronic device, a display chip thereof and a method for correctly displaying images on the two screens of the electronic device as well as an external screen at the same time, so as to correctly display images on the two screens and the external screen at the same time. The device comprises a first display controller, a second display controller and a video adjusting chip, wherein the first display controller is used for providing a first video to a first screen; the second display controller is used for providing a second video to a second screen; and the video adjusting chip is coupled between the second display controller and the external screen and used for adjusting the resolution and scanning mode of the second video and outputting the adjusted second video. Through the invention, images can be correctly displayed on the two screens and the external screen at the same time.
Description
Technical field
The present invention relates to dual-screen electronic device, more relate to the apparatus and method of correct display frame on double screen and external screen simultaneously.
Background technology
Mobile phone with double screen can satisfy user's demand of executive utility one side ornamental film on one side, so become popular mobile phone machine gradually.In order to strengthen multimedia phonotape and videotape function, mobile phone even more utilize a HDMI (High Definition MultimediaInterface HDMI) exports high-quality audiovisual/visual information to display unit such as external TV or projector.
Fig. 1 is known double screen mobile phone 100 with HDMI output.As general mobile phone, this double screen mobile phone 100 comprises elements such as a central processing unit (CPU) 102, a memory 104, a power management chip (PMIC) 106, radio frequency chip 108.In addition, this double screen mobile phone 100 still comprises one first display panels 112, one second display panels 114, HDMI transmission chip 116 and a HDMI output port 118.Wherein, this first display panels 112 is shown in video on first and second screen (figure does not show) respectively with this second display panels 114.Central processing unit 102 also comprises one first display panels controller 122 and one second display panels controller 124.This first display panels 112 and this second display panels 114 can be obtained the video of output through the RGB bus respectively on the first display panels controller 122 of this central processing unit 102 and the second display panels controller 124; And through serial bus interface (SerialPeripheral Interface SPI) receives the control of central processing unit 102.
This first display panels controller 122 and this second display panels controller 124 are generally rgb interface, in order to the video output of rgb format to be provided.RGB is a kind of coding method of common dot chart color, adopts the optical strength of Red Green Blue to represent a color, can be applicable to kinds of displays such as cathode ray tube, liquid crystal, plasma.
This HDMI transmission chip 116; Except obtaining the rgb video from central processing unit 102; On central processing unit 102, obtain voice data and control command through I2S interface and I2C interface respectively in addition, and export the audiovisual/visual information of obtaining to be connected a external screen (figure does not show) through HDMI output port 118 with mobile phone 100.It should be noted that; In the known Double screen handset; Usually in order to save system resource; In two display panels at least one (second display panels 114 with Fig. 1 is an example) must be transmitted chip 116 shared same display panels controllers (the second display panels controller 124 with Fig. 1 is an example) with this HDMI, and receives identical video output.Yet this HDMI transmission chip 122 is also inequality in fact with 112,114 video specification that can receive of display panels.For example; This HDMI transmission chip 122 can receive resolution up to the video of 1280 * 720 (720p) (even reach UXGA 1600 * 1200), but display panels 112,114 can only support resolution to be up to 1024 * 600 video (LCD screen of mobile phone is generally 800 * 600 the form of WVGA).Therefore; When the user desires to televise the HDMI video with the external HDMI that is connected to double screen mobile phone 100; This HDMI high-res video of display panels controller 124 output can't be understood by second display panels 114, and then cause in the double screen at least one normally to show and close.
For promoting the multimedia function of mobile phone, still need a kind of method and the device of correct display frame on double screen and external screen simultaneously.
Summary of the invention
For overcoming defective of the prior art, the present invention provides a kind of dual-screen electronic device, in order to correct display frame on double screen and external screen simultaneously, comprising: one first display controller, in order to provide one first video to one first screen; One second display controller is in order to provide one second video to one second screen; One video adjustment chip is coupled between this second display controller and this external screen, also adjusted this second video is exported in order to resolution and the scan mode of adjusting this second video.
The present invention provides a kind of display chip in addition; In be built in a kind of dual-screen electronic device; In order to correct display frame on double screen and external screen simultaneously, wherein this dual-screen electronic device comprises one first display controller, in order to provide one first video to one first screen; And one second display controller; In order to provide one second video to one second screen; This display chip comprises: a video adjustment unit; Be coupled between this second display controller and this external screen, also adjusted this second video exported in order to resolution and the scan mode of adjusting this second video.
The present invention provides the method for correct display frame on double screen and the external screen of a kind of while at electronic installation in addition, and wherein this electronic apparatus comprises one first display controller, in order to provide one first video to one first screen; And one second display controller, in order to provide one second video to one second screen; This method comprises: the resolution of adjusting this second video; Adjust the scan mode of this second video; With this first video of this first screen display; With this second video of this second screen display; And with adjusted this second video of this external screen demonstration.
The present invention provides a kind of display chip in addition; Be disposed at the electronic installation of building screen in one; In order in this, to build simultaneously correct display frame on screen and the external screen, wherein this electronic installation comprises a display controller, in being somebody's turn to do, builds screen in order to one first video to be provided; Build screen and shared this display controller of this external screen in wherein being somebody's turn to do; This display chip comprises: a video adjustment unit, be coupled between this display controller and this external screen, and also adjusted this first video is exported in order to resolution and the scan mode of adjusting this first video; Wherein: the video with a high-res is provided when this display controller; And should in when building screen and can only show video with a low-res, this video adjustment unit downgrades (downscale) to this low-res with this first video from this high-res, and adjusted this first video provided builds screen in this; And in this, build the video that screen can only adopt a vertical scanning mode; And when this external screen can only adopt the video of a horizontal sweep mode; This video adjustment unit is rotated into this horizontal sweep mode with this vertical scanning mode of this first video, and adjusted this first video is provided to this external screen.
The present invention can correct display frame on double screen and external screen simultaneously.
Description of drawings
Fig. 1 is known double screen mobile phone 100 with HDMI output.
Fig. 2 A is the sketch map according to the double screen electronic installation 200 of the present invention one first embodiment.
Fig. 2 B is the sketch map according to the double screen electronic installation 300 of the present invention one second embodiment.
Fig. 2 C is the sketch map according to the double screen electronic installation 400 of the present invention 1 the 3rd embodiment.
Fig. 2 D is the sketch map according to the double screen electronic installation 500 of the present invention 1 the 4th embodiment.
Fig. 3 A, Fig. 3 B are respectively the sketch map of Portrait on the mobile phone or panning mode and scan mode thereof.
Fig. 3 C is the scan mode sketch map on the TV.
The method flow diagram of Fig. 4 correct display frame on the double screen of electronic installation and external screen that is the while of the present invention.
Wherein, description of reference numerals is following:
100～double screen mobile phone;
102～central processing unit;
104～memory;
106～power management chip;
108～radio frequency chip;
112～the first display panels;
114～the second display panels;
116～HDMI transmits chip;
118～HDMI output port;
202～processing unit;
204～memory;
206～power management chip;
208～radio frequency chip;
212～the first display modules;
214～the second display modules;
230～video adjustment chip;
240～buffer;
216～video transmission chip;
218～video-out port;
250～external screen;
300～dual-screen electronic device;
302～processing unit;
312～the first display modules;
314～the second display modules;
340～buffer;
318～video-out port;
322～the first display controllers;
324～the second display controllers;
330～display chip;
331～video adjustment unit;
332～external display unit;
350～external screen;
400～dual-screen electronic device;
402～processing unit;
412～the first display modules;
414～the second display modules;
440～buffer;
418～video-out port;
422 first display controllers;
424～the second display controllers;
430～display chip;
431～video adjustment unit;
432～external display unit;
450～external screen;
500～dual-screen electronic device;
502～processing unit;
512～the first display modules;
514～the second display modules;
530～video adjustment chip;
540～buffer;
516～video transmission chip;
518～video-out port;
522～the first display controllers;
524～the second display controllers;
550～external screen.
Embodiment
Hereinafter is for introducing most preferred embodiment of the present invention.Each embodiment is in order to explaining principle of the present invention, but non-in order to restriction the present invention.Scope of the present invention is when being as the criterion with the accompanying Claim item.
Fig. 2 A is the sketch map according to the double screen electronic installation 200 of the present invention one first embodiment.Dual-screen electronic device 200 of the present invention can normal display frame on double screen and external screen simultaneously.Dual-screen electronic device 200 for example, can be a double screen mobile phone, comprises a processing unit 202 (for example, being a central processing unit), a memory 204, a power management chip (PMIC) 206, a radio frequency chip 208 etc.In addition, dual-screen electronic device 200 of the present invention also comprises one first display module 212, one second display module 214, video adjustment chip 230, a buffer 240, a video transmission chip 216 and a video-out port 218.
This first display module 212 is shown in video on first screen and second screen (figure does not show) of mobile phone 200 respectively with this second display module 214.Video-out port 218 can connect an external screen 250, and this video transmission chip 216 can be shown in video on this external screen through this video-out port 218.
In first embodiment, this first display module 212 can be display panels with this second display module 214, and first and second screen can be LCD screen, for example, all can only support to have the video than low-res (for example 1024 * 600).In this embodiment; Video transmission chip 216 is HDMI transmission chip; Video-out port 218 is the HDMI output port; External screen 250 is then for using the video of HDMI (High Definition Multimedia Interface, TV HDMI) can support to have higher resolution (for example 1280 * 720).
In one embodiment, video transmission chip 216 of the present invention can be the HDMI transmission chip 116 described in the prior art, and it is connected with processing unit 202 with RGB, I2S and I2C bus, and receives video, audio frequency and the control command of this processing unit 202.Yet in this embodiment, video transmission chip 216 of the present invention is different with known HDMI transmission chip 116.As shown in Figure 2, both are different part, and video transmission chip 216 of the present invention can be obtained audio frequency and control command with I2S and I2C bus from handling unit 202 in addition from video adjustment chip 230 receiver, videos of the present invention.
Can't go up simultaneously and the shortcoming of correct display video at its double screen (i.e. first screen and second screen) and external screen three thereof in order to overcome known mobile phone, the present invention has disposed video adjustment chip 230 on dual-screen electronic device 200.This video adjustment chip 230 is coupled between this second display controller 224 and this external screen 250, in order to receive this second video, the resolution of adjusting this second video and scan mode, also adjusted this second video to be exported from receiving this second display controller 224.Detailed adjustment program will be explained as follows:
Adjustment resolution: this second video with low-res (1024 * 600) is provided when this second display controller 224; And when this external screen can only show the video with high-res (1280 * 720), this video adjustment chip 230 increased (upscale) to this high-res with this second video from this low-res.Afterwards, this video adjustment chip 230 more provides adjusted this second video to this external screen 250, to meet the specification requirement of 250 pairs of video resolutions of external screen.In one embodiment, the method that increases video comprises the use interpolation, but the present invention needn't be as limit.
The adjustment scan mode: in general, the screen of mobile phone can adopt Portrait (portraitmode) or panning mode (landscape mode) to present image frame simultaneously, respectively shown in Fig. 3 A, Fig. 3 B.The screen of most mobile phones all carries out image scanning with the direction that the picture with respect to Portrait is level, shown in Fig. 3 A.This scan mode promptly is equal to and is vertical direction with the picture with respect to panning mode and scans (being commonly referred to as " vertical scanning mode " with simplified illustration at this), shown in Fig. 3 B.Yet the direction that external HDMI TV can only be level usually with the picture with respect to panning mode scans (being commonly referred to as " horizontal sweep mode " with simplified illustration at this), shown in Fig. 3 C.Therefore, when mobile phone is desired to make the panning mode picture of its output of external tv demonstration, can suffer from the inconsistent problem of scan mode.Video adjustment chip 230 of the present invention promptly can be used to head it off.Briefly, if this second screen can only adopt the video of vertical scanning mode, and this external screen be can only adopt the video of horizontal sweep mode the time, and then this video adjustment chip 230 is rotated into the horizontal sweep mode with the vertical scanning mode of this second video.In other embodiment; If this second screen can only adopt the video of horizontal sweep mode; And when this external screen can only adopt the video of vertical scanning mode, then this video adjustment chip 230 was rotated into the vertical scanning mode with the horizontal sweep mode of this second video.
The present invention does not limit the execution sequence of above-mentioned adjustment resolution and scan mode, and in a preferred embodiment, two adjustment programs also can be carried out simultaneously, or select an execution.In addition, the process of adjustment resolution and scan mode all relates to image processing and computing, and the buffer 240 that is coupled to this video adjustment chip 230 among the present invention can be in order to this second video in the temporary adjustment.Buffer 240 is a kind of memory, for example, can be a static RAM (Static Random Access Memory, SDRAM).Yet those of ordinary skills can design and select for use suitable memory voluntarily according to spirit of the present invention, needn't exceed with previous examples.
Fig. 2 B is the sketch map according to the double screen electronic installation 300 of the present invention one second embodiment.The dual-screen electronic device 300 of second embodiment is similar in appearance to the dual-screen electronic device 200 of aforementioned first embodiment, comprises a processing unit 302, one first display module 312, one second display module 314, a buffer 340 and a video-out port 318.Wherein this processing unit 302 comprises one first display controller 322, in order to one first video to, first screen (figure does not show) to be provided; And one second display controller 324, in order to one second video to, second screen (figure does not show) to be provided.In addition, this video-out port 318 can be connected with an external screen 350.Dual-screen electronic device 300 that it should be noted that present embodiment also comprises a display chip 330.This display chip 330 is integrated in a video adjustment unit 331 and an external display unit 332 wherein.This video adjustment unit 331 is adjusted chip 230 similar in appearance to the video among first embodiment; It is coupled between this second display controller 324 and the external screen 350; In order to resolution and the scan mode of adjusting this second video, and export adjusted this second video to this external screen 350.In addition; 332 of this external display units are similar in appearance to aforesaid video transmission chip 216; It is coupled between this video adjustment unit 331 and this external screen 350; Receive adjusted this second video in order to this video adjustment chip certainly, handle unit 302 certainly and receive voice data and control commands, and export an audio-visual data to this external screen 350.In addition, can with digital phase locked loop (digital phase locked loop) and time schedule controller (timing controller Tcon) is disposed in this display chip 330, in order to the sequential of adjusting this second video to meet HDMI output requirement.
Fig. 2 C is the sketch map according to the double screen electronic installation 400 of the present invention 1 the 3rd embodiment.The dual-screen electronic device 400 of the 3rd embodiment is similar in appearance to the dual-screen electronic device 300 of aforementioned second embodiment, comprises a processing unit 402, one first display module 412, one second display module 414, a buffer 440 and a video-out port 418.Wherein this processing unit 402 comprises one first display controller 422, in order to provide one first video to one first screen; And one second display controller 424, in order to provide one second video to one second screen.In addition, this video-out port 418 can be connected with an external screen 450.The dual-screen electronic device 400 of present embodiment also comprises a display chip 430 similar with aforementioned second embodiment.This display chip 430 is integrated in a video adjustment unit 431 and an external display unit 432 wherein.This video adjustment unit 431 is coupled between this second display controller 424 and the external screen 450, in order to resolution and the scan mode of adjusting this second video, and with adjusted this second video output.432 of this external display units are similar in appearance to aforesaid external display unit 332; It is coupled between this video adjustment unit 431 and this external screen 450; Receive these external videos in order to this video adjustment unit 431 certainly, and export adjusted this second video to this external screen.Yet, be that with the aforementioned second embodiment difference this display chip 430 couples this second display module 414 (promptly being coupled to this second screen), in order to directly to export this second video to this second screen.
In the previous embodiment, all adopt the method that resolution is increased to solve in the mobile phone and build screen and external screen video resolution problem incompatible with each other.Yet, in a most preferred embodiment, also can adopt other practices.Fig. 2 D is the sketch map according to the double screen electronic installation 500 of the present invention 1 the 4th embodiment (most preferred embodiment).The dual-screen electronic device 500 of the 4th embodiment is similar in appearance to the dual-screen electronic device 200 of aforementioned first embodiment, comprises a processing unit 502, one first display module 512, one second display module 514, video adjustment chip 530, a buffer 540, a video transmission chip 516 and a video-out port 518.Wherein this processing unit 502 comprises one first display controller 522, in order to one first video to, first screen (figure does not show) to be provided; And one second display controller 524, in order to one second video to, second screen (figure does not show) to be provided.In addition, this video-out port 518 can be connected with an external screen 550.The video adjustment chip 530 of the 4th embodiment is same as the video adjustment chip 230 of first embodiment, is coupled between this second display controller 524 and this external screen, in order to resolution and the scan mode of adjusting this second video.Yet, be to adjust the flow process of resolution and scan mode with the aforementioned first embodiment difference.This second video with high-res (1280 * 720) is provided when this second display controller 524; And when this second screen can only show the video with low-res (1024 * 600), this video adjustment chip 530 downgraded (downscale) to this low-res with this second video from this high-res.Afterwards, the scan mode of these video adjustment chip 530 these second videos of adjustment.For example; If this external screen 550 can only adopt the video of a horizontal sweep mode; Then this second display controller 524 can provide second video of a horizontal sweep to adjust chip 530 to video; But in the time of can only adopting the video of a vertical scanning mode because of this second screen,, and adjusted this second video is provided to this second screen so this video adjustment chip 530 can be rotated into this vertical scanning mode with this horizontal sweep mode of this second video.Similarly; If external screen 550 can only adopt the video of a vertical scanning mode; Then this second display controller 524 can provide second video of vertical scanning to adjust chip 530 to video; But,, and adjusted this second video is provided to this second screen so this video adjustment chip 530 can be rotated into this vertical scanning mode with this horizontal sweep mode of this second video because this second screen can only adopt the video of a horizontal sweep mode.Because downgrading the related computing of video resolution increases the video resolution and comes simply; And what export external screen 550 among this embodiment to is without computings such as interpolations and the high-res video of distortion, so this embodiment is a preferred embodiment compared to previous embodiment.In addition, also can be general in the present embodiment as aforementioned second embodiment, wherein video adjustment chip 530 is integrated among the display chip with video transmission chip 516, because its technology contents can be with reference to previous embodiment, so repeat no more at this.
So far, dual-screen electronic device of the present invention and electronic component thereof are complete openly as above with various embodiment, yet it should be noted that those of ordinary skills still can do various forms of integration and modification with aforementioned disclosed various electronic components.For example, in the 3rd embodiment shown in Fig. 2 C, can buffer 440 further be integrated among the system-on-a-chip (system on chip) with display chip 430.Again for example; In the 4th embodiment shown in Fig. 2 D; Can be with between second display controller 524, video adjustment chip 530 and video transmission chip 516 threes that are disposed at processing unit 502 to a plurality of diverter switches (figure do not show); Make when this dual-screen electronic device 500 is desired to show with three screens (first, second and external screen) simultaneously; Beginning opens this second display controller 524 and adjusts being connected of 530 of chips with this video, so can in the time need not using multi-screen to show, reach the effect of saving power.
Except above-mentioned dual-screen electronic device and various display chip, the present invention also discloses the method for correct display frame on the double screen of electronic apparatus and external screen of a kind of while.The method flow diagram of Fig. 4 correct display frame on the double screen of electronic installation and external screen that is the while of the present invention.Method of the present invention is applied to an electronic installation, and this dual-screen electronic device 200 of sentencing Fig. 2 A is example, and hereinafter will be with reference to this embodiment and description of drawings method of the present invention thereof.This electronic installation 200 comprises one first display controller 222, in order to provide one first video to one first screen; And one second display controller 224; In order to provide one second video to one second screen; The while of the present invention method of correct display frame on the double screen of electronic installation and external screen 250 comprises: in step S402, adjust the resolution of this second video; In step S404, adjust the scan mode of this second video; In step S406, with this first video of this first screen display; In step S408, with this second video of this second screen display; In step S410, show adjusted this second video with this external screen.
For example, step S402 can adjust chip 230 or 530 execution by video.At this moment; The step of the resolution of this second video of step S402 adjustment also comprises: when this second display controller provides the video with a high-res; And when this second screen can only show the video with a low-res; This second video is downgraded (downscale) to this low-res from this high-res, and adjusted this second video is provided to this second screen; And this second video with a low-res is provided when this second display controller; And when this external screen can only show the video with a high-res; This second video is increased (upscale) to this high-res from this low-res, and adjusted this second video is provided to this external screen.
For example, step S404 can adjust chip 230 execution by video.At this moment; The step of the scan mode of this second video of adjustment also comprises among the step S404: the video that can only adopt a vertical scanning mode when this second screen; And when this external screen can only adopt a horizontal sweep mode to put in order video; This vertical scanning mode of this second video is rotated into this horizontal sweep mode, and adjusted this second video is provided to this external screen; Can only adopt the video of a horizontal sweep mode when this second screen; And when this external screen can only adopt the video of a vertical scanning mode; This horizontal sweep mode of this second video is rotated into this vertical scanning mode, and adjusted this second video is provided to this external screen.
Yet step S404 also can adjust chip 530 by video and carry out.At this moment; The step of the scan mode of this second video of adjustment also comprises among the step S404: the video that can only adopt a vertical scanning mode when this second screen; And when this external screen can only adopt a horizontal sweep mode to put in order video; This horizontal sweep mode of this second video is rotated into this vertical scanning mode, and adjusted this second video is provided to this second screen; And can only adopt the video of a horizontal sweep mode when this second screen; And when this external screen can only adopt the video of a vertical scanning mode; This video adjustment chip is rotated into this horizontal sweep mode with this vertical scanning mode of this second video, and adjusted this second video is provided to this second screen.
Though the present invention with preferred embodiment openly as above; So it is not in order to limit scope of the present invention; Any those of ordinary skills; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the protection range that claim defined of enclosing.
Claims (14)
1. dual-screen electronic device in order to correct display frame on double screen and external screen simultaneously, comprising:
One first display controller is in order to provide one first video to one first screen;
One second display controller is in order to provide one second video to one second screen; And
One video adjustment chip is coupled between this second display controller and this external screen, also adjusted this second video is exported in order to resolution and the scan mode of adjusting this second video.
2. dual-screen electronic device as claimed in claim 1; Wherein work as this second display controller the video with a high-res is provided; And when this second screen can only show the video with a low-res; This video adjustment chip downgrades this low-res with this second video from this high-res, and adjusted this second video is provided to this second screen.
3. dual-screen electronic device as claimed in claim 1; Wherein work as this second display controller this second video with a low-res is provided; And when this external screen can only show the video with a high-res; This video adjustment chip increases this second video to this high-res from this low-res, and adjusted this second video is provided to this external screen.
4. dual-screen electronic device as claimed in claim 1; Wherein can only adopt the video of a vertical scanning mode when this second screen; And when this external screen can only adopt the video of a horizontal sweep mode; This video adjustment chip is rotated into this horizontal sweep mode with this vertical scanning mode of this second video, and adjusted this second video is provided to this external screen.
5. dual-screen electronic device as claimed in claim 1; Can only adopt the video of a vertical scanning mode when this second screen; And when this external screen can only adopt the video of a horizontal sweep mode; This video adjustment chip is rotated into this vertical scanning mode with this horizontal sweep mode of this second video, and adjusted this second video is provided to this second screen.
6. dual-screen electronic device as claimed in claim 1 also comprises a processing unit, and it comprises this first display controller and this second display controller.
7. dual-screen electronic device as claimed in claim 1 also comprises a buffer, is coupled to this video adjustment chip, in order to this second video in the temporary adjustment.
8. dual-screen electronic device as claimed in claim 1, wherein this dual-screen electronic device is a double screen mobile phone.
9. dual-screen electronic device as claimed in claim 1, wherein this external screen is for using HDMI.
10. dual-screen electronic device as claimed in claim 1, wherein shared this second display controller of this second screen and this external screen.
11. a display chip, in be built in a kind of dual-screen electronic device, in order to correct display frame on double screen and external screen simultaneously, wherein this dual-screen electronic device comprises one first display controller, in order to provide one first video to one first screen; And one second display controller, in order to provide one second video to one second screen, this display chip comprises:
One video adjustment unit is coupled between this second display controller and this external screen, also adjusted this second video is exported in order to resolution and the scan mode of adjusting this second video.
12. display chip as claimed in claim 11; Also comprise a video transmission chip; Be coupled between this video adjustment unit and this external screen; Receive adjusted this second video in order to this video adjustment unit certainly, receive voice data and control command from a processing unit, and export an audio-visual data to this external screen.
13. the method for while correct display frame on the double screen of electronic installation and external screen, wherein this electronic apparatus comprises one first display controller, in order to provide one first video to one first screen; And one second display controller, in order to provide one second video to one second screen; This method comprises:
Adjust the resolution of this second video;
Adjust the scan mode of this second video;
With this first video of this first screen display;
With this second video of this second screen display; And
Show adjusted this second video with this external screen.
14. display chip; Be disposed at the electronic installation of building screen in one; In order in this, to build simultaneously correct display frame on screen and the external screen, wherein this electronic installation comprises a display controller, in being somebody's turn to do, builds screen in order to one first video to be provided; Build screen and shared this display controller of this external screen in wherein being somebody's turn to do, this display chip comprises:
One video adjustment unit is coupled between this display controller and this external screen, also adjusted this first video exported in order to resolution and the scan mode of adjusting this first video, wherein:
Video with a high-res is provided when this display controller; And should in when building screen and can only show video with a low-res; This video adjustment unit downgrades this low-res with this first video from this high-res, and adjusted this first video provided builds screen in this; And
In this, build the video that screen can only adopt a vertical scanning mode; And when this external screen can only adopt the video of a horizontal sweep mode; This video adjustment unit is rotated into this vertical scanning mode with this horizontal sweep mode of this first video, and adjusted this first video provided builds screen in this.
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| CN2010102374311A CN102340585A (en) | 2010-07-23 | 2010-07-23 | Dual-screen electronic device and display method and display chip thereof |
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| CN2010102374311A CN102340585A (en) | 2010-07-23 | 2010-07-23 | Dual-screen electronic device and display method and display chip thereof |
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| CN103327352A (en) * | 2013-05-03 | 2013-09-25 | 四川虹视显示技术有限公司 | Device and method for achieving double display screen 3D display by adoption of serial processing mode |
| CN103390397A (en) * | 2013-07-24 | 2013-11-13 | 福州瑞芯微电子有限公司 | Double screen display device and method based on Android system |
| CN104934013A (en) * | 2014-03-18 | 2015-09-23 | 纬创资通股份有限公司 | Display and video picture display method thereof |
| CN106775544A (en) * | 2017-01-20 | 2017-05-31 | 宇龙计算机通信科技(深圳)有限公司 | The double of application program open display methods and device |
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| CN102890909A (en) * | 2012-09-25 | 2013-01-23 | 珠海全志科技股份有限公司 | Synchronous displaying method and device |
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| CN112530355A (en) * | 2020-08-24 | 2021-03-19 | 友达光电股份有限公司 | Display device and control method |
| TWI754358B (en) * | 2020-08-24 | 2022-02-01 | 友達光電股份有限公司 | Display device and control method |
| CN112530355B (en) * | 2020-08-24 | 2024-04-05 | 友达光电股份有限公司 | Display device and control method |
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