CN102982746B - Method and device for rapidly moving EPD (Electronic Paper Display) and displaying pictures - Google Patents
Method and device for rapidly moving EPD (Electronic Paper Display) and displaying pictures Download PDFInfo
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Abstract
The invention discloses a method for rapidly moving an EPD (Electronic Paper Display) and displaying pictures. According to the method and a device for rapidly moving the EPD (Electronic Paper Display) and displaying pictures disclosed by the invention, moving pictures undergo image data conversion, and are displayed by adopting an A2 mode, so that the display speed is increased; and moreover, picture data are converted by adopting a Floyd-Steinberg dithering algorithm, so that images become clearer, and moving pictures are displayed more clearly and rapidly on an EPD screen. The invention further discloses the device for rapidly moving the EPD and displaying pictures.
Description
Technical field
The present invention relates to EPD display technique, relate in particular to a kind of EPD fast moving and the method Showing Picture and device.
Background technology
Electrophoretic display technology (EPD) claim again electrophoretic display device (EPD), is the early display technique of development of class master mode display, is to utilize coloured charged ball, by extra electric field, in liquid environment, move, present the display effect of different colours, it represents that manufacturer comprises E-Ink and Sipix.
What is electrophoretic techniques? according to literal meaning " under certain voltage can swimming ", the principle of work of its demonstration is that the electron ion by being immersed among transparent or colour liquid moves, by overturning or mobile particulate brightens pixel or dimmed, and can be fabricated in glass, metal or plastic.Concrete technology is that the TiO 2 particles that diameter is about to 1mm is dispersed in hydrocarbon oil, black dyes, surfactant and make the charged charge control agent of particle also be added in hydrocarbon oil; This potpourri is placed on two interblocks apart from being between the parallel conductive plates of 10-100mm, and when to two current-carrying plate making alives, these particles can move to the thin plate with opposite charges from the thin plate at place in the mode of electrophoresis.When particle is positioned at the front (display surface) of display, display screen is white, and this is because light is scattered back reader one side by TiO 2 particles; When particle is positioned at the display back side, display is black, and this is because coloured dye has absorbed incident light.If the electrode at the back side is divided into a plurality of small pictorial elements (pixel), by each region of display being added to suitable voltage produces echo area and uptake zone pattern, can form image.
Electrophoretic techniques has several large advantages: the one, and energy consumption is low, owing to having bistability, after power supply is closed, still on display, image is retained to several days or some months; The 2nd, the display that electrophoretic techniques is produced belongs to reflection-type, therefore has good daylight readable, equally also can in front of the light of face or side combine, for dark surrounds; The 3rd, there are the potentiality of low production cost because this technology does not need strict encapsulation, and adopt solution processing techniques as printing be feasible; The 4th, it is characteristic flexibly that electrophoretic display device (EPD) be take form factor, allows that they are fabricated on plastics, metal or glass surface, so it is the optimal selection of flexible display technologies.
EPDPing factory can be a WAVEFORM file of each screen configuration, and WAVEFORM has the data of many kinds of brush screen patterns.Brush screen pattern has GC, DU, A2 etc.GC pattern is to be updated to 16 GTGs from 16 GTGs, but the finer and smoother display speed of the multidisplay image ratio of grey exponent number is slow.DU pattern is updated to 2 GTGs from 16 GTGs, but the more coarse display speed of the image ratio that grey exponent number shows is less faster than GC pattern.A2 pattern is to be updated to 2 GTGs from 2 GTGs, but the more coarse display speed of the image ratio that grey exponent number shows is less faster than DU.Each screen factory of the name of GC, DU, A2 pattern is inconsistent, but character is the same, as being updated to 16 GTGs from 16 GTGs or being updated to 2 GTGs from 16 GTGs.
At present, in EPD e-book, generally by GC pattern, Show Picture, the color showing is abundanter, but very slow when showing mobile picture, and have Caton phenomenon, although adopt A2 pattern to show that display speed is very fast, but can only show black and white dichromatism, and shown picture is fuzzy.
Summary of the invention
The invention provides a kind of EPD fast moving and the method Showing Picture and device.
For solving the problems of the technologies described above, a technical scheme provided by the invention is:
A kind of method that EPD fast moving is provided and Shows Picture, comprising: S1, judge picture after convergent-divergent the wide wide or convergent-divergent that whether is greater than EPD screen after picture height whether be greater than the height of EPD screen, if so, perform step S2; S2, judge whether to receive the mobile picture instruction of touch-screen; S3, when definite touch-screen receives mobile picture instruction, the color image data of the picture after convergent-divergent is changed into the black white image data of 256 GTGs, adopt Floyd-Steinberg dithering algorithm the black white image data of 256 GTGs to be changed into the black white image data of 2 GTGs; S4, the viewing area of calculating the black white image data of 2 GTGs; S5, the data of the viewing area of the black white image data of 2 GTGs are shown to EPD screen with DU MODE; S6, to receive touch event be moving event to judgement touch-screen or upspring event, if determine it is moving event, performs step S7, if determine it is the event of upspringing, performs step S9; S7, the viewing area of calculating the black white image data of 2 GTGs; S8, the data of the viewing area of the black white image data of 2 GTGs are shown to EPD screen with A2 MODE; S9, judge in a Preset Time whether touch-screen receives touch event, if not, enters step S10, if so, performs step S6; S10, the color image data after convergent-divergent is changed into the black white image data of 256 GTGs, adopt Floyd-Steinberg dithering algorithm, the black white image data of 256 GTGs are changed into the black white image data of 16 GTGs; S11, the viewing area data of the black white image data of 16 GTGs are shown to EPD screen with GCMODE, exit picture mobile status.
For solving the problems of the technologies described above, a technical scheme provided by the invention is:
The device that a kind of EPD fast moving is provided and Shows Picture, comprises Image Display detecting unit, touch event identifying unit, image data conversion unit and viewing area computing unit; Whether Image Display detecting unit is greater than the wide or high of touch-screen for the wide or high of picture after judging convergent-divergent, and sends and treat that mobile picture instruction is to touch event identifying unit when definite being greater than; Touch event identifying unit is for when described in receiving during until mobile picture instruction, judge touch-screen whether receive mobile picture operate and work as definite touch-screen when receiving mobile picture and operating the instruction of output mobile picture to image data conversion unit; Image data conversion unit is when receiving described mobile picture instruction, the color image data of the picture after convergent-divergent is changed into the black white image data of 256 GTGs, adopt Floyd-Steinberg dithering algorithm the black white image data of 256 GTGs to be changed into the black white image data of 2 GTGs; Viewing area computing unit is for calculating the viewing area of the black white image data of described 2 GTGs; Display mode control module is for being shown to EPD screen by the data of the viewing area of the black white image data of described 2 GTGs with DU MODE; Described touch event identifying unit is also for being shown to EPD when screen by the data of the viewing area of the black white image data of 2 GTGs with DUMODE when described display mode control module, and judgement touch-screen receives touch event to be moving event or to upspring event; When determining that touch event is moving event, notify the viewing area of black white image data of 2 GTGs of described viewing area computing unit computed image Date Conversion Unit output; When definite touch event is to judge in a Preset Time, whether touch-screen receives touch event while upspringing event, when determining while not receiving touch event, send the instruction of upspringing to described image data conversion unit;
Described image data conversion unit also for changing into the color image data after convergent-divergent the black white image data of 256 GTGs when upspringing instruction described in receiving, adopt Floyd-Steinberg dithering algorithm, the black white image data of 256 GTGs are changed into the black white image data of 16 GTGs; Described display mode control module also shields and notifies Image Display detecting unit to stop the instruction of output mobile picture for the viewing area data of the black white image data of 16 GTGs of described image data conversion unit output are shown to EPD with GC MODE.
Technique effect of the present invention is: EPD fast moving of the present invention and the method Showing Picture and device are carried out view data conversion and adopted A2 pattern to show by the picture to mobile, display speed is accelerated, in addition, adopt Floyd – Steinberg dithering algorithm to carry out view data conversion and make image more clear, thus the speed that realizes is fast and clear picture in EPD screen display, move picture.Further, the present invention has added suitable Preset Time as the stand-by period in whole demonstration control procedure, has solved the frequent slack-off problem of speed causing of switching of GC pattern and A2 pattern, has promoted user's experience.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of a kind of EPD fast moving and the device that Shows Picture in an embodiment of the present invention;
Fig. 2 is the flowchart of a kind of EPD fast moving and the method that Shows Picture in an embodiment of the present invention.
Main element symbol description
EPD fast moving and the device 100 Showing Picture; Image Display detecting unit 1;
Touch event identifying unit 2; Image data conversion unit 3; Viewing area computing unit 4;
Display mode control module 5.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, being realized object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.
Referring to Fig. 1, is the flowchart of a kind of EPD fast moving and the method that Shows Picture in first embodiment of the invention.EPD fast moving and the method Showing Picture, comprising:
Step S1, judge picture after convergent-divergent the wide wide or convergent-divergent that whether is greater than EPD screen after picture height whether be greater than the height of EPD screen, if so, perform step S2;
Step S2, judge whether to receive the mobile picture instruction of touch-screen;
Step S3, when definite touch-screen receives mobile picture instruction, the color image data of the picture after convergent-divergent is changed into the black white image data of 256 GTGs, adopt Floyd-Steinberg dithering algorithm the black white image data of 256 GTGs to be changed into the black white image data of 2 GTGs;
Step S4, the viewing area of calculating the black white image data of 2 GTGs;
Step S5, the data of the viewing area of the black white image data of 2 GTGs are shown to EPD screen with DU MODE;
Step S6, to receive touch event be moving event to judgement touch-screen or upspring event, if determine it is moving event, performs step S7, if determine it is the event of upspringing, performs step S9;
Step S7, the viewing area of calculating the black white image data of 2 GTGs;
Step S8, the data of the viewing area of the black white image data of 2 GTGs are shown to EPD screen with A2 MODE;
Step S9, judge in a Preset Time whether touch-screen receives touch event, if not, enters step S10, if so, performs step S6;
Step S10, the color image data after convergent-divergent is changed into the black white image data of 256 GTGs, adopt Floyd-Steinberg dithering algorithm, the black white image data of 256 GTGs are changed into the black white image data of 16 GTGs; The flating algorithm of Floyd Steinberg dithering, is published in 1976 first, by Robert W Freud and Louis's Staenberg.It is generally used for passing through image processing software.This algorithm, by being diffused into the quantization error of its neighbor, is realized shake.
Step S 11, the viewing area data of the black white image data of 16 GTGs are shown to EPD screen with GC MODE, exit picture mobile status.
Referring to Fig. 2, is the functional block diagram of a kind of EPD fast moving in an embodiment of the present invention and the device that Shows Picture.A kind of EPD fast moving and the device 100 Showing Picture comprise Image Display detecting unit 1, touch event identifying unit 2, image data conversion unit 3, viewing area computing unit 4 and display mode control module 5.
Whether described Image Display detecting unit 1 is greater than the wide or high of touch-screen for the wide or high of picture after judging convergent-divergent, and sends and treat that mobile picture instruction is to touch event identifying unit 2 when definite being greater than.
Touch event identifying unit 2, for when described in receiving during until mobile picture instruction, judges whether touch-screen receives mobile picture and operate and work as and determine when touch-screen receives mobile picture operation that the instruction of output mobile picture is to image data conversion unit 3.
Image data conversion unit 3 is when receiving described mobile picture instruction, the color image data of the picture after convergent-divergent is changed into the black white image data of 256 GTGs, adopt Floyd-Steinberg dithering algorithm the black white image data of 256 GTGs to be changed into the black white image data of 2 GTGs.
Viewing area computing unit 4 is for calculating the viewing area of the black white image data of described 2 GTGs;
Display mode control module 5 is for being shown to EPD screen by the data of the viewing area of the black white image data of described 2 GTGs with DU MODE.
Described touch event identifying unit 2 is also for being shown to EPD when screen by the data of the viewing area of the black white image data of 2 GTGs with DU MODE when described display mode control module 5, and judgement touch-screen receives touch event to be moving event or to upspring event; When determining that touch event is moving event, notify the viewing area of the black white image data of described viewing area computing unit 2 GTGs that 4 computed image Date Conversion Units are exported, and notify display mode control module 5 that the data of the viewing area of the black white image data of 2 GTGs are shown to EPD screen with A2MODE; When definite touch event is to judge in a Preset Time, whether touch-screen receives touch event while upspringing event, when determining while not receiving touch event, send the instruction of upspringing to described image data conversion unit 3; Described image data conversion unit 3 also for changing into the color image data after convergent-divergent the black white image data of 256 GTGs when upspringing instruction described in receiving, adopt Floyd – Steinberg dithering algorithm, the black white image data of 256 GTGs are changed into the black white image data of 16 GTGs; Described display mode control module 5 also shields and notifies Image Display detecting unit 1 to stop the instruction of output mobile picture for the viewing area data of the black white image data of 16 GTGs of described image data conversion unit output are shown to EPD with GC MODE.
Technique effect of the present invention is: EPD fast moving of the present invention and the method Showing Picture and device are carried out view data conversion and adopted A2 pattern to show by the picture to mobile, display speed is accelerated, in addition, adopt Floyd – Steinberg dithering algorithm to carry out view data conversion and make image more clear, thus the speed that realizes is fast and clear picture in EPD screen display, move picture.Further, the present invention has added suitable Preset Time as the stand-by period in whole demonstration control procedure, has solved the frequent slack-off problem of speed causing of switching of GC pattern and A2 pattern, has promoted user's experience.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (2)
1. EPD fast moving and the method that Shows Picture, is characterized in that, comprising:
S1, judge picture after convergent-divergent widely or high whether be greater than the wide or high of EPD screen, if so, perform step S2;
S2, judge whether to receive the mobile picture instruction of touch-screen;
S3, when definite touch-screen receives mobile picture instruction, the color image data of the picture after convergent-divergent is changed into the black white image data of 256 GTGs, adopt Floyd – Steinberg dithering algorithm the black white image data of 256 GTGs to be changed into the black white image data of 2 GTGs;
S4, the viewing area of calculating the black white image data of 2 GTGs;
S5, the data of the viewing area of the black white image data of 2 GTGs are updated to 2 grayscale mode with 16 GTGs are shown to EPD screen;
S6, to receive touch event be moving event to judgement touch-screen or upspring event, if determine it is moving event, performs step S7, if determine it is the event of upspringing, performs step S9;
S7, the viewing area of calculating the black white image data of 2 GTGs;
S8, the data of the viewing area of the black white image data of 2 GTGs are updated to 2 grayscale mode with 2 GTGs are shown to EPD screen;
S9, judge in a Preset Time whether touch-screen receives touch event, if not, enters step S10, if so, performs step S6;
S10, the color image data after convergent-divergent is changed into the black white image data of 256 GTGs, adopt FloydSteinberg dithering algorithm, the black white image data of 256 GTGs are changed into the black white image data of 16 GTGs;
S11, the viewing area data of the black white image data of 16 GTGs are updated to 16 grayscale mode with 16 GTGs are shown to EPD screen, exit picture mobile status.
2. EPD fast moving and the device that Shows Picture, is characterized in that, comprises Image Display detecting unit, touch event identifying unit, image data conversion unit, viewing area computing unit and display mode control module;
Whether Image Display detecting unit is greater than the wide or high of touch-screen for the wide or high of picture after judging convergent-divergent, and sends and treat that mobile picture instruction is to touch event identifying unit when definite being greater than;
Touch event identifying unit is for when described in receiving during until mobile picture instruction, judge touch-screen whether receive mobile picture operate and work as definite touch-screen when receiving mobile picture and operating the instruction of output mobile picture to image data conversion unit;
Image data conversion unit is when receiving described mobile picture instruction, the color image data of the picture after convergent-divergent is changed into the black white image data of 256 GTGs, adopt Floyd – Steinberg dithering algorithm the black white image data of 256 GTGs to be changed into the black white image data of 2 GTGs;
Viewing area computing unit is for calculating the viewing area of the black white image data of described 2 GTGs;
Display mode control module is shown to EPD screen for the data of the viewing area of the black white image data of described 2 GTGs are updated to 2 grayscale mode with 16 GTGs;
Described touch event identifying unit is also for being shown to EPD when screen when described display mode control module is updated to 2 grayscale mode by the data of the viewing area of the black white image data of 2 GTGs with 16 GTGs, and judgement touch-screen receives touch event to be moving event or to upspring event; When determining that touch event is moving event, notify the viewing area of black white image data of 2 GTGs of described viewing area computing unit computed image Date Conversion Unit output, and notify display mode control module that the data of the viewing area of the black white image data of 2 GTGs are updated to 2 grayscale mode with 2 GTGs to be shown to EPD screen; When definite touch event is to judge in a Preset Time, whether touch-screen receives touch event while upspringing event, when determining while not receiving touch event, send the instruction of upspringing to described image data conversion unit;
Described image data conversion unit also for changing into the color image data after convergent-divergent the black white image data of 256 GTGs when upspringing instruction described in receiving, adopt Floyd – Steinberg dithering algorithm, the black white image data of 256 GTGs are changed into the black white image data of 16 GTGs;
Described display mode control module is also shown to EPD and shields and notify Image Display detecting unit to stop the instruction of output mobile picture for the viewing area data of the black white image data of 16 GTGs of described image data conversion unit output are updated to 16 grayscale mode with 16 GTGs.
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| CN104950805B (en) * | 2015-06-11 | 2017-07-14 | 北京工业大学 | A kind of space error compensation method based on Floyd algorithms |
| CN105632417B (en) * | 2016-01-14 | 2019-02-15 | 北京大上科技有限公司 | Electronic ink screen ghost sweep-out method, display methods and corresponding electronic equipment |
| CN106023904A (en) * | 2016-05-16 | 2016-10-12 | 深圳市博阅科技股份有限公司 | Display control method and device based on electronic ink screen |
| CN114820370A (en) * | 2022-04-27 | 2022-07-29 | 深圳市掌阅科技有限公司 | Picture conversion method of ink screen equipment, electronic equipment and storage medium |
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| EP1774504B1 (en) * | 2004-07-27 | 2014-02-19 | Adrea LLC | Improved scrolling function in an electrophoretic display device |
| US20100060547A1 (en) * | 2008-09-11 | 2010-03-11 | Sony Ericsson Mobile Communications Ab | Display Device and Method for Displaying Images in a Variable Size Display Area |
| CN101437169B (en) * | 2008-12-19 | 2010-10-27 | 深圳市迅雷网络技术有限公司 | Method and apparatus for implementing black and white of color image |
| CN102750910B (en) * | 2012-06-27 | 2015-01-21 | 福州瑞芯微电子有限公司 | Self-adaption display method of EPD (electronic paper display) screen |
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