CN101980072A

CN101980072A - E-ink screen refresh control system and method based on Android system

Info

Publication number: CN101980072A
Application number: CN 201010272845
Authority: CN
Inventors: 王波
Original assignee: Guangdong Oujia Holding Company Ltd
Current assignee: Guangdong Oujia Holding Company Ltd
Priority date: 2010-09-02
Filing date: 2010-09-02
Publication date: 2011-02-23

Abstract

The invention relates to the technical field of electronic ink screens based on an Android system, in particular to an Android system-based electronic ink screen refreshing control system and method. The system comprises a storage module for storing the image data of the whole screen and a display module for refreshing and outputting the image data in the storage module to the electronic ink screen, and further comprises: a region module for extracting region-specific coordinates from the system; a detection module for detecting whether data exists in the coordinate module: if the data is stored in the area module, the display module only refreshes and outputs the image data determined by the area coordinates; and if the data does not exist in the area module, the display module refreshes and outputs all the image data. The method and the device enable Android to be well adapted to display of the electronic ink screen, can realize quick refreshing of a local area, and simultaneously enable the display difference between the TFT display screen and the electronic ink screen to be transparent to the application layer.

Description

Electric ink screen refresh control system and method based on the Android system

Technical field

The present invention relates to the electric ink screen technical field based on the Android system, particularly the electric ink based on the Android system shields the refresh control system and method.

Background technology

Android is former to be intelligence system for mobile phone development, only supports the demonstration of TFT screen.And the type of drive of TFT display screen is shown to the content in the video memory on the display screen by demonstration I/O interface then for will content displayed copying in the video memory.

But the type of drive of electric ink screen (Eink screen) is for behind the video memory content update, at first the content in the video memory is sent in the internal memory of chip controls, then, the rectangular area that CPU notice chip will show, and the notice chip refreshes the displaying contents in the respective rectangular zone of display panel with certain waveform pattern (DU or GC16).

DU and GC16 are wherein two kinds of waveform pattern (waveform mode), and DU supports 2 kinds of GTGs: black and white.GC16 then supports 16 kinds of GTGs.

As can be known, the rectangular area that each needs refresh can not be known in the Android system when showing more than the contrast, just displaying contents is deposited in the video memory, refreshes by showing that the I/O interface is controlled then, and in addition, it can not support the different wave pattern of electric ink.If support the electric ink screen with the former display mode of Android system, then system must refresh a whole screen at every turn, and all refreshing all is a kind of waveform pattern.And the display speed of electric ink screen does not wait to 1S from more than 30 ms according to rectangular area size that refreshes and pattern and the mode difference that refreshes at every turn.In this case, can not satisfy our demand to the quick rolling of high bright wisp in the list box.

Summary of the invention

First goal of the invention of the present invention provides based on the electric ink of Android system screen refresh control system, to solve in the prior art technical matters that can't refresh the specific region based on the electric ink screen of Android system.

In order to realize first goal of the invention of the present invention, the technical scheme of employing is as follows:

A kind of electric ink screen refresh control system based on the Android system, described system comprises the memory module that is used to store whole screen image data, is used for refreshing to the electric ink screen display module of the view data of output memory module, described system also comprises:

Be used for extracting the regions module of specific region coordinate from system;

Be used for the detection module whether the detection coordinates module exists data:

If there are data in the regions module, then display module only refreshes the view data that output is determined by area coordinate;

If there are not data in the regions module, then display module refreshes output all images data.

As a kind of preferred version, described display module also includes the waveform pattern module, if there are data in the regions module, then the waveform pattern module settings is regional waveform pattern, otherwise is set at full frame waveform pattern.

As further preferred version, the GTG of described regional waveform pattern correspondence is less than the GTG of full frame waveform pattern correspondence, and preferred regional waveform pattern adopts 2 GTGs, i.e. DU pattern, and full frame waveform pattern adopts 16 GTGs, i.e. GC16 pattern.

As a kind of preferred version, described specific region is a plurality of, comprise first area and second area, described regions module extracts the coordinate of first area and second area from system, described first area is the area coordinate of electric ink screen element before the electric ink screen refreshes, and second area is the area coordinate that the electric ink screen refreshes back electric ink screen element.

As a kind of preferred version, described electric ink screen element is high bright wisp.

Second aspect purpose of the present invention is to provide a kind of electric ink screen refresh control method based on the Android system, is applied to first aspect control system that purpose provides of the present invention.

In order to realize second goal of the invention of the present invention, the technical scheme of employing is as follows:

A kind of electric ink screen refresh control method based on the Android system, described method comprises the steps:

(61) duplicate the whole screen image data of electric ink screen to memory module from Installed System Memory;

(62) obtain the coordinate of specific region and store regions module into from system;

(63) duplicate the whole screen image data of electric ink screen to video memory from Installed System Memory;

(64) in the surveyed area module whether data are arranged,, otherwise refresh whole screen image data if having then in video memory, only refresh view data in the coordinate of specific region.

As a kind of preferred version, it is characterized in that:

Described (62) also comprise, the GTG of the waveform pattern correspondence of the view data in the setting specific region is less than the GTG of the waveform pattern correspondence of the view data outside the specific region, waveform pattern in the preferred specific region adopts 2 GTGs, be the DU pattern, the view data waveform pattern outside the specific region adopts 16 GTGs.Be GC16.

As a kind of preferred version, described step (62) comprising: obtain the area coordinate that the electric ink screen refreshes preceding electric ink screen element from system, as the first area; From system, obtain the area coordinate that the electric ink screen refreshes back electric ink screen element,, in the described step (64), data are arranged in the regions module, then in video memory, refresh the view data of first area and second area if detect as second area.

As further preferred version, described electric ink screen element is high bright wisp.

The present invention makes Android well adapt to the demonstration of electric ink screen, can realize refreshing fast to regional area, makes the demonstration difference of TFT display screen and electric ink screen to layer transparent simultaneously.

Description of drawings

Fig. 1 is the process flow diagram of the embodiment of the invention;

Fig. 2 is the structural representation of the embodiment of the invention.

Embodiment

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

Be illustrated in figure 1 as the concrete steps of the embodiment of the invention:

In the Android system, when refreshing view, then call the invalidate function, after calling invalidate, surface flinger can dispatch in system, surface flinger can copy present displayed content among the front buffer (being video memory) to from back buffer (region of memory of system assignment, size equals video memory), by the demonstration I/O interface among the CPU content among the front buffer is shown on the display screen then.

Therefore present embodiment adopts following steps:

Step S110, in the list box interface, when high bright wisp when a position is rolled to another position, two rectangular area coordinates of motion track are passed to surfaceflinger, surfaceflinger passes to driving to these two coordinates then, preserve these two coordinates in the lv_list variable in driving, and the refresh mode of these two coordinates is labeled as DU.

Step S120, when surfaceflinger begins processes and displays, at first the rectangular coordinates all dirty zones passes to driving in surfaceflinger, write down all these dirty rectangular area coordinates in the oth_list variable in driving, and the refresh mode of these rectangular area coordinates is labeled as GC16.

Wherein, DU is used for 2 rank gray scales, and promptly black and white, GC16 then supports 16 rank gray scales.Because DU only supports 2 rank gray scales, so it refreshes sooner than GC16, but only is suitable for refreshing some simple region, as the high bright wisp in the present embodiment.

Step S130, surfaceflinger copies present displayed content the front buffer to from back buffer.Surfaceflinger gives driving control then.

Step S140, in driving, at first judge whether node is arranged in the lv_list variable, if have, just begin to show the coordinate of all nodes in the lv_list variable, refresh mode is the refresh mode that writes down in the node, has shown behind all nodes in the lv_list variable all knot removals in this tabulation directly to be deleted all nodes in the oth_list variable then; If do not exist in the lv_list variable under the situation of node, begin to show the coordinate of all nodes in the oth_list variable, refresh mode is the refresh mode that writes down in the node, and having shown will be with all knot removal in this tabulation behind all nodes in the oth_list variable.After finishing dealing with, return then and finish this display operation.

Be illustrated in figure 2 as the structural representation of the embodiment of the invention.

Application layer 210 (Application) passes to ListView220 to relevant service data, ListView220 is by internal thread communication (Inter-process communication, IPC) mode passes to surfaceflinger thread 230, surfacefl inger thread 230 data transfer to driving in 240.

Electric ink screen refresh control system 241 based on Andro id system is arranged in the driving 240, and system 241 comprises:

Be used to store the memory module 2411 of whole screen image data, surfaceflinger to memory module 2411, is the oth_list variable to whole screen data transmission in the present embodiment;

Be used for refreshing the display module 2412 of the view data of output memory module 2411 to the electric ink screen;

Be used for extracting from system the regions module 2413 of specific region coordinate, surfaceflinger is stored in regions module 2413 to the specific region coordinate that obtains from ListView220, be lv_list in the present embodiment;

Be used for the detection module 2414 whether the detection coordinates module exists data:

If have data in detection module 2414 regions module 2413, then 2412 of display modules refresh the view data that output is determined by area coordinate;

If there are not data in the regions module 2413, then display module 2412 refreshes output all images data.

The above only is a preferred implementation of the present invention; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. An electronic ink screen refresh control system based on the Android system, characterized in that, the system includes a storage module for storing the entire screen image data, and is used to refresh and output the display of the image data in the storage module to the electronic ink screen module, it is characterized in that the system also includes:

A region module for extracting specific region coordinates from the system;

The detection module used to detect whether there is data in the coordinate module:

If there is data stored in the area module, the display module only refreshes and outputs the image data determined by the area coordinates;

If there is no data in the area module, the display module refreshes and outputs all image data.

2. The refresh control system according to claim 1, wherein the display module also includes a waveform mode module, if data is stored in the area module, the waveform mode module is set to the area waveform mode, otherwise it is set to For full-screen waveform mode.

3. The refresh control system according to claim 2, wherein the gray scale corresponding to the regional waveform mode is smaller than the gray scale corresponding to the full screen waveform mode.

4. The refresh control system according to claim 1, wherein there are multiple specific areas, including a first area and a second area, and the area module extracts the data of the first area and the second area from the system. Coordinates, the first area is the area coordinates of the electronic ink screen elements before the electronic ink screen is refreshed, and the second area is the area coordinates of the electronic ink screen elements after the electronic ink screen is refreshed.

5. The refresh control system according to claim 4, wherein the electronic ink screen element is a highlight bar.

6. An electronic ink screen refresh control method based on Android system, characterized in that, the method comprises the steps:

(61) Copy the entire screen image data of the electronic ink screen to the storage module from the system memory;

(62) Obtain the coordinates of a specific area from the system and store it in the area module;

(63) Copy the entire screen image data of the electronic ink screen from the system memory to the video memory;

(64) Detect whether there is data in the area module, if there is, only refresh the image data in the coordinates of the specific area in the display memory, otherwise refresh the whole screen image data.

7. The refresh control method according to claim 6, characterized in that:

The above (62) also includes setting the gray scale corresponding to the waveform mode of the image data in the specific area to be smaller than the gray scale corresponding to the waveform mode of the image data outside the specific area.

8. The refresh control method according to claim 6, wherein the step (62) comprises: acquiring the area coordinates of the electronic ink screen elements before the electronic ink screen is refreshed from the system as the first area; Obtain the area coordinates of the electronic ink screen element after the electronic ink screen is refreshed, as the second area, in the step (64), if it is detected that there is data in the area module, then refresh the images of the first area and the second area in the video memory data.

9. The refresh control method according to claim 8, wherein the electronic ink screen element is a highlight bar.