CN104156191A - System and method for extending mobile electronic device to PC display - Google Patents
System and method for extending mobile electronic device to PC display Download PDFInfo
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- CN104156191A CN104156191A CN201410416686.2A CN201410416686A CN104156191A CN 104156191 A CN104156191 A CN 104156191A CN 201410416686 A CN201410416686 A CN 201410416686A CN 104156191 A CN104156191 A CN 104156191A
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Abstract
The invention provides a system and method for extending a mobile electronic device to a PC display. A display data output module is arranged in a PC, a data receiving module, a data processing module and an on screen display module are arranged on the mobile electronic device, the PC is in communication with the mobile electronic device in a USB mode, the mobile electronic device supports a USBOTG working mode, the display data module comprises a discrepant data computing module and further comprises a discrepant data compression module, and the data processing module comprises a data analysis module matched with the discrepant data compression module and further comprises an image conversion module. According to the technical scheme, content displayed on the PC can be extended to a display screen of the mobile device, the data transmission quantity is small, and the device is fast in response. The system and method for extending the mobile electronic device to the PC display are especially suitable for transmitting text, static images and two-dimensional code data on the display screen of the PC to the electronic ink display screen of the mobile device.
Description
Technical field
The present invention relates to communicating by letter of computing machine and mobile device, be specifically related to a kind of system and method that mobile electronic device is expanded to PC display.
Background technology
Along with scientific and technical development, the mobile electronic device market penetration rates such as panel computer, smart mobile phone, personal data utility appliance (PDA) are more and more higher.And the screen of mobile electronic device is more and more advanced, and the screen of mobile electronic device mainly contains lcd screen, electronic ink screen etc. at present.Some has exceeded desktop computer screen the sharpness of LCD type and color effect, and the screen of electric ink type is a kind of display technique different with LCD principle, although refresh rate is slow; only have two kinds of colors of black and white, but do not glimmer, not luminous; can reduce the stimulation to eyes, effectively vision protection.Above-mentioned mobile device is expanded to PC displaying appliance for wide application prospect, in prior art, still lack the expansion of content such as the word in PC, picture, video are shown to the technology on mobile device.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of system that mobile electronic device is expanded to PC display, can, according to the call format of mobile device display screen, the expansion of PC screen content be shown on mobile device display screen.
For solving the problems of the technologies described above, the system that mobile electronic device is expanded to PC display of the present invention, comprise PC, also comprise mobile electronic device, in described PC, be provided with demonstration data outputting module, in described mobile electronic device, be provided with data reception module for receiving PC data, data processing module for the treatment of received data, for data after treatment being shown to the screen display module of mobile electronic device display screen; In described mobile electronic device, be also provided with initialization module, exit module; Between described PC and mobile electronic device, communicate by letter in wired or wireless mode.
Preferably, between described PC and mobile electronic device, by USB pattern communication, described mobile electronic device is supported USB OTG mode of operation.
Preferably, described mobile electronic device comprises an electric ink display screen.
Preferably, described demonstration data outputting module comprises the variance data computing module comparing with previous frame, also comprises variance data compression module; Described data processing module comprises the data resolution module mating with described variance data compression module, also comprises image conversion module.
Preferably, in described data processing module, also comprise difference counting module.
On the basis of said system, the present invention also provides the method that mobile electronic device is expanded to PC display, comprises the following steps:
Variance data computing module in step 01:PC machine compares present frame and previous frame individual element, while there is difference, record the Pixel Information of present frame at this coordinate, and difference pixel data is transferred to mobile electronic device after the compression of variance data compression module;
Step 02: mobile electronic device carries out initialization by initialization module, receives the variance data of PC transmission, and obtain difference pixel data after described data resolution module decompresses by described data reception module;
Step 03: the difference pixel data that described image conversion module obtains above-mentioned steps 02 is converted to the difference pixel data that meets mobile electronic device display image pattern;
Step 04: the difference pixel data that described image conversion module obtains above-mentioned steps 03 writes the respective pixel position of previous frame image, generates a new two field picture;
Step 05: the view data that described screen display module calculates above-mentioned steps 04 exports the display screen of mobile electronic device to;
Step 06: repeat above-mentioned steps 01 to step 05.
Preferably, described step 03 comprises:
Step 031: calculate red green blue tricolor information from the pixel reduction;
Step 032: according to the requirement of 32 looks, red green blue tricolor information is calculated to the numerical value that meets 32 look requirements.
Preferably, described step 03 comprises:
Step 031: calculate red green blue tricolor information from the pixel reduction;
Step 033: calculate this color apart from the white degree of approximation according to red green blue tricolor information, be scaled grey level with this;
Step 034: according to requirements set, the grey level that above-mentioned steps 033 is calculated is adjusted into final grey level.
Preferably, described step 02 also comprises:
Step 021: by the number of the difference counting module statistics difference pixel different from previous frame;
The region of carrying out screen according to the statistics of step 021 in described step 05 refreshes or the overall situation refreshes.
Adopted after technique scheme, the displaying contents on PC display screen can be transferred to mobile device display screen by data-switching, and the advantage such as it is little to possess volume of transmitted data, and equipment reaction is rapid.
Be particularly useful for the text on PC display screen, still image, Quick Response Code data transmission to the electric ink display screen of mobile device.
The present invention is directed to electric ink display screen region refresh function is provided, can reduce the unnecessary overall situation and refresh, optimized user's experience.
Brief description of the drawings
Fig. 1 is the schematic diagram that mobile electronic device is expanded to the system of PC display of the present invention;
Fig. 2 is the software flow pattern that mobile electronic device is expanded to the method for PC display of the present invention;
Fig. 3 is that in the specific embodiment of the invention, consecutive frame variance data is calculated and the principle schematic of image restoring.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Embodiment mono-
In the present embodiment, mobile electronic device is with an electric ink display screen.The present embodiment be particularly useful for user by the text display on PC display on mobile electronic device, also can, by the Image Display on PC display on mobile electronic device, also the static contents such as Quick Response Code can be shown to mobile electronic device so that user is carried and provide third party to carry out barcode scanning.
As shown in Figure 1, the PC 1 that comprises of the present invention, also comprise mobile electronic device 2, it is characterized in that: in described PC 1, be provided with and show data outputting module 10, in described mobile electronic device 2, be provided with data reception module 20 for receiving PC data, data processing module 21 for the treatment of received data, for data after treatment being shown to the screen display module 22 of mobile electronic device display screen; In described mobile electronic device 2, be also provided with initialization module 23, exit module 24; Between described PC 1 and mobile electronic device 2, communicate by letter in wired or wireless mode.
In the present embodiment, mobile electronic device 2 adopts Amazon Kindle DXG, and the electronic ink screen size of this hardware is 9.7 cun, and resolution is 1200x824, and screen color is 16 grades of gray scales of black and white.Physical connection is the widely used second generation and third generation USB interface on PC 1 and electric ink equipment, with the displaying contents of high-speed transfer common computer to the screen of electric ink equipment.
In the present embodiment, the display resolution of PC 1, mobile electronic device 2 is set as the same, and such simultaneous display effect is best.
The display resolution that is less than PC 1 at the display resolution of mobile electronic device 2, the display screen that mobile electronic device 2 can be set shows the partial content of PC 1 display screen, so still, can well process the task such as Reading text, web page browsing, for example display screen of mobile electronic device 2 only shows the rectangular segment of PC 1 display screen upper left corner 1200x824 pixel.The display resolution that is greater than PC 1 at the display resolution of mobile electronic device 2, the display screen of mobile electronic device 2 will show the full content of PC 1 display screen, and all the other screen areas show black.
This Amazon Kindle DXG supports USB OTG mode of operation.When work, be set to USB from equipment.
Particularly, on mobile electronic device, define a quick combination button, in the time that this combination button is pressed, equipment will be switched to the display mode of this Software for Design definition as the read state of electric paper book from general modfel, at this moment mobile device is connected in common computer by USB or other transmission means, just can as graphoscope, works.When again pressing quick combination button, equipment will be got back to original general modfel.This shortcut can define according to equipment Default Value.
Data reception module 20 is realized the support that needs bottom transmission link, as USB or WiFi etc., in the present embodiment, realizes with USB.It should be noted that, present mobile electronic device generally all supports that USB OTG is USB On-The-Go technology, allows equipment be operated in USB main equipment and USB from one of two kinds of patterns of equipment.The prerequisite of data reception module work is to allow equipment be operated in USB from equipment mode.
In described mobile electronic device 2, be provided with initialization module 23, the main responsible following function of initialization module 23:
-press USB from the device descriptor of the requirements definition USB device of equipment, configuration descriptor, character string descriptor, interface descriptor and endpoint descriptor, could identify and load corresponding program as the personal computer of USB line other end main equipment like this, to transmit corresponding data.
-this module is registered to the operating system into mobile electronic device, particularly USB subsystem, allows USB controller be operated in from equipment mode.
-initializers storage space, allows data reception module 20 normally work.
The major function of data reception module 20 is that the details that receives the concrete data data of transmitting on USB line will, in data processing module 21 part introductions, mainly realize and comprising:
-maintain a receiving queue, when moment, data volume was large, play buffer action like this.
-to notify next module be the analyzing and processing that data processing module 21 carries out data.
Exit module 24: normal need of work of the present invention is as a part for device core operating system, so when receiving while exiting command, exit module by doing some conventional cleaning works, as releasing memory.
Data processing module 21 is nucleus modules of the present invention.First data processing module 21 has defined the relation of transmission data and screen picture: the content that will show on PC 1 screen can be regarded as continuous one by one image, difference before and after the data that the present invention is transmitted are actually between image, the object of doing is like this to reduce volume of transmitted data.
As shown in Figure 2, the method that mobile electronic device is expanded to PC display of the present invention, comprises the following steps:
Variance data computing module 101 in step 01:PC machine 1 compares present frame and previous frame individual element, while there is difference, record the Pixel Information of present frame at this coordinate, and difference pixel data is transferred to after variance data compression module 102 compresses to mobile electronic device 2;
Step 02: mobile electronic device 2 carries out initialization by initialization module 23, receives by described data reception module 20 variance data that PC 1 transmits, and obtain difference pixel data after described data resolution module 210 decompresses;
In the present embodiment, described demonstration data outputting module 10 comprises the variance data computing module 101 comparing with previous frame, also comprises variance data compression module 102; Described data processing module 21 comprises the data resolution module 210 mating with described variance data compression module 102, and described variance data compression can adopt existing various ripe compression and decompression algorithm with decompression.
As the submodule of data processing module 21, the image difference data that data resolution module 210 receives resolution data receiver module 20.Concrete function comprises:
-variance data is compressed, so here need to decompress.
-variance data has recorded the information of difference pixel, comprises coordinate position, color.This module, by these Data Analysis reduction, converts image pixel coordinate, the colouring information of representative to.For example, be exactly coordinate (0,0) if pixel is positioned at the screen upper left corner, white pixel will be computer data 0XFFFF under 16 look schemes.
As shown in Figure 3, a two field picture in PC, can be considered as the pixel of a lot of row longitudinal arrangements, or be considered as the transversely arranged pixel of a lot of row, or be considered as the pixel set of matrix format, in the present invention, if the address that between consecutive frame, same position is corresponding is identical, and storage pixel data difference, these pixels are exactly the difference pixel between consecutive frame, and it is exactly difference pixel data that these pixel datas of present frame gather.Difference pixel data is write to the respective pixel position of previous frame image, just can generate the new two field picture that hope obtains.
Difference counting module 212 is optimization processes of doing for electric ink type mobile electronic device.The method for refreshing of electronic ink screen has two kinds: subregion screen-refresh and overall screen-refresh.The overall situation refreshes and has obvious refresh delay, frequently uses the overall situation to refresh can to cause bad user to experience so unsuitable.Number the notification screen display module 22 of difference pixel between difference counting module 212 meeting real time record front and back two field pictures, like this in the time of screen display module 22 display image data, screen display module 22 can carry out Dynamic Selection screen refresh method according to the number of difference pixel, number adopts region to refresh less, number adopts the overall situation to refresh more, refresh to reduce the unnecessary overall situation as far as possible, optimized user's experience.The detailed process that region is refreshed, the overall situation refreshes is realized by mobile electronic device self system.
In described data processing module 21, also comprise difference counting module 212.
Described step 02 also comprises:
Step 021: the number of being added up the difference pixel different from previous frame by difference counting module 212.
Step 03: the difference pixel data that described image conversion module 211 obtains above-mentioned steps 02 is converted to the difference pixel data that meets mobile electronic device 2 display image patterns;
Step 03 illustrates: aspect color representation, data resolution module 210 has been resolved the data that obtain as 16 looks, needs just can meet through conversion the demonstration demand of mobile electronic device, can process respectively according to the screen type difference of equipment.Treated difference pixel data, by being covered to the corresponding coordinate of previous frame entire image, has so just completed the operation of image conversion module, generates a new frame entire image.
The demonstration of electric ink type mobile electronic device is 4 looks, i.e. 16 grades of gray scales of black and white, need to convert 4 looks to from 16 looks so, and step comprises:
-step 031 calculates red green blue tricolor information from 16 original looks.
-step 033, calculates this color apart from the white degree of approximation according to red green blue tricolor information, converses corresponding grey level with this.
-step 034, for electric ink type equipment, image conversion module has also realized by what gray scale of user's request definition to be shown, for example 16 grades of gray scale electronic ink screens of black and white, user can adjust to 8 grades, 4 grades, 2 grades gray scales downwards, more meets to reaching the display effect that user requires.
Step 04: the difference pixel data that described image conversion module 211 obtains above-mentioned steps 03 writes the respective pixel position of previous frame image, just can generate the new two field picture that hope obtains;
Step 05: the view data that described screen display module 22 calculates above-mentioned steps 04 exports the display screen of mobile electronic device 2 to;
Screen display module 22 is responsible for a upper module, and the screen image information that data processing module 21 is handled, is presented on the display screen of mobile electronic device continuously, forms continuous one by one image.Screen display module has used existing computer graphics techniques, for example, transmit data to the territory, frame buffer zone of display screen.
Step 06: repeat above-mentioned steps 01 to step 05, show thereby realize continuously.
In the time that mobile electronic device 2 powers up, image conversion module 211 need to cover the variance data receiving the corresponding coordinate of previous frame entire image, to generate a new frame entire image, be first frame picture and now PC 1 exports, the interior data without previous frame entire image of mobile electronic device 2.Now, each pixel all there are differences, thereby the method that automatically adopts whole coverings is completed image processing by image conversion module 211.
The region of carrying out screen according to the statistics of step 021 in described step 05 refreshes or the overall situation refreshes.
Embodiment bis-
In the present embodiment, described mobile electronic device is with a LCD display.
The color displays of LCD type mobile electronic device is 32 looks, need to convert 32 looks to from 16 looks so.
Concrete step comprises:
Variance data computing module 101 in step 01:PC machine 1 compares present frame and previous frame individual element, while there is difference, record the Pixel Information of present frame at this coordinate, and difference pixel data is transferred to after variance data compression module 102 compresses to mobile electronic device 2;
Step 02: mobile electronic device 2 carries out initialization by initialization module 23, receives by described data reception module 20 variance data that PC 1 transmits, and obtain difference pixel data after described data resolution module 210 decompresses;
Step 03: the difference pixel data that described image conversion module 211 obtains above-mentioned steps 02 is converted to the difference pixel data that meets mobile electronic device 2 display image patterns;
Step 031: calculate red green blue tricolor information from the image reduction;
Step 032: according to the requirement of 32 looks, red green blue tricolor information is calculated to the numerical value that meets 32 look requirements.
Step 04: the difference pixel data that described image conversion module 211 obtains above-mentioned steps 03 writes the respective pixel position of previous frame image, just can generate the new two field picture that hope obtains;
Step 05: the view data that described screen display module 22 calculates above-mentioned steps 04 exports the display screen of mobile electronic device 2 to;
Step 06: repeat above-mentioned steps 01 to step 05, show thereby realize continuously.
Mobile electronic device, comprise that screen material is LCD type, electric ink type and other types, after using technical scheme of the present invention, can allow common computer change without making any hardware, only by a usb data line or other data connection approachs, just can identify mobile electronic device, allow mobile electronic device become another external display of computing machine, thereby expanded the usable range of mobile electronic device.
Claims (9)
1. one kind expands to mobile electronic device the system of PC display, comprise PC (1), also comprise mobile electronic device (2), it is characterized in that: in described PC (1), be provided with and show data outputting module (10), in described mobile electronic device (2), be provided with data reception module (20) for receiving PC data, data processing module (21) for the treatment of received data, for data after treatment being shown to the screen display module (22) of mobile electronic device display screen; In described mobile electronic device (2), be also provided with initialization module (23), exit module (24); Between described PC (1) and mobile electronic device (2), communicate by letter in wired or wireless mode.
2. the system that mobile electronic device is expanded to PC display as claimed in claim 1, it is characterized in that: between described PC (1) and mobile electronic device (2), by USB pattern communication, described mobile electronic device (2) is supported USB OTG mode of operation.
3. the system that mobile electronic device is expanded to PC display as claimed in claim 2, is characterized in that: described mobile electronic device (2) comprises an electric ink display screen.
4. the system that mobile electronic device is expanded to PC display as claimed in claim 2, it is characterized in that: described demonstration data outputting module (10) comprises the variance data computing module (101) comparing with previous frame, also comprises variance data compression module (102); Described data processing module (21) comprises the data resolution module (210) mating with described variance data compression module (102), also comprises image conversion module (211).
5. the system that mobile electronic device is expanded to PC display as claimed in claim 4, is characterized in that: in described data processing module (21), also comprise difference counting module (212).
6. a method that mobile electronic device is expanded to PC display, comprises the following steps:
Variance data computing module (101) in step 01:PC machine (1) compares present frame and previous frame individual element, while there is difference, record the Pixel Information of present frame at this coordinate, and difference pixel data is transferred to mobile electronic device (2) after variance data compression module (102) compression;
Step 02: mobile electronic device (2) carries out initialization by initialization module (23), receive the variance data of PC (1) transmission by described data reception module (20), and obtain difference pixel data after described data resolution module (210) decompresses;
Step 03: the difference pixel data that described image conversion module (211) obtains above-mentioned steps 02 is converted to the difference pixel data that meets mobile electronic device (2) display image pattern;
Step 04: the difference pixel data that described image conversion module (211) obtains above-mentioned steps 03 writes the respective pixel position of previous frame image, generates a new two field picture;
Step 05: the view data that described screen display module (22) calculates above-mentioned steps 04 exports the display screen of mobile electronic device (2) to;
Step 06: repeat above-mentioned steps 01 to step 05.
7. the method that mobile electronic device is expanded to PC display as claimed in claim 6, is characterized in that: described step 03 comprises:
Step 031: calculate red green blue tricolor information from the pixel reduction;
Step 032: according to the requirement of 32 looks, red green blue tricolor information is calculated to the numerical value that meets 32 look requirements.
8. the method that mobile electronic device is expanded to PC display as claimed in claim 6, is characterized in that: described step 03 comprises:
Step 031: calculate red green blue tricolor information from the pixel reduction;
Step 033: calculate this color apart from the white degree of approximation according to red green blue tricolor information, be scaled grey level with this;
Step 034: according to requirements set, the grey level that above-mentioned steps 033 is calculated is adjusted into final grey level.
9. the described method that mobile electronic device is expanded to PC display as claimed in claim 8, is characterized in that:
Described step 02 also comprises:
Step 021: by the number of difference counting module (212) the statistics difference pixel different from previous frame;
The region of carrying out screen according to the statistics of step 021 in described step 05 refreshes or the overall situation refreshes.
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| CN201410416686.2A CN104156191A (en) | 2014-08-22 | 2014-08-22 | System and method for extending mobile electronic device to PC display |
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| CN104572003A (en) * | 2015-01-30 | 2015-04-29 | 深圳市国华光电科技有限公司 | Second screen terminal and communication system with same |
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| CN107293245A (en) * | 2016-04-12 | 2017-10-24 | 辛纳普蒂克斯日本合同会社 | Image processing apparatus, compressor circuit, display driver, display device and image processing method |
| CN107408257A (en) * | 2015-03-04 | 2017-11-28 | 奥的斯电梯公司 | Interactive billboard system for elevator |
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| CN117198233A (en) * | 2023-09-23 | 2023-12-08 | 深圳市大我云读写科技有限公司 | Picture display method and related equipment for color electronic ink screen integrated machine |
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