CN108281119B - Memory variable frequency window period display method and system - Google Patents
Memory variable frequency window period display method and system Download PDFInfo
- Publication number
- CN108281119B CN108281119B CN201810047347.XA CN201810047347A CN108281119B CN 108281119 B CN108281119 B CN 108281119B CN 201810047347 A CN201810047347 A CN 201810047347A CN 108281119 B CN108281119 B CN 108281119B
- Authority
- CN
- China
- Prior art keywords
- display
- data
- memory
- frequency conversion
- screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A memory frequency conversion window period display method and system comprises the following steps that display data generated by an output layer of a display are output to a cache region in a display controller and then transmitted to a screen for display; and when the display data in the buffer area exceeds the threshold value, sending a notification signal to the memory controller, and when the memory starts frequency conversion, calling the data in the buffer area by the display controller and transmitting the data to a screen for display. The effect of compatible blanking period frequency conversion or random time internal memory frequency conversion is achieved.
Description
Technical Field
The invention relates to a display optimization technology, in particular to a method and a system for displaying a memory variable frequency window period
Background
During DDR frequency conversion, each controller is not allowed to access the port of the DDR to perform data access, and then frequency conversion needs to be performed when each port enters idle. The display module needs to interact with a user, and if data refreshing is not timely, the user can intuitively feel that the card is stuck. Each display screen has a specific blanking period, and the blanking period does not affect the image display, so the DDR frequency conversion needs to be completed in the blanking period. But such an implementation is not flexible enough because DDR conversion can only be done during the blanking period. If the frequency conversion can be carried out at any time, the larger power consumption can be saved; and the frequency response can be timely improved for the DDR scene with high frequency.
Disclosure of Invention
Therefore, a new frequency conversion method is needed to be provided, and the blanking period frequency conversion or the memory frequency conversion at any time is compatible.
In order to achieve the above object, the inventor provides a memory variable frequency window period display method, which includes the following steps that display data generated by an output layer of a display is output to a buffer area in a display controller and then transmitted to a screen for display;
and when the display data in the buffer area exceeds the threshold value, sending a notification signal to the memory controller, and when the memory starts frequency conversion, calling the data in the buffer area by the display controller and transmitting the data to a screen for display.
And further, the method also comprises the step of configuring the system into a DDR read-write mode which preferentially responds to the VOP after the memory starts frequency conversion.
Specifically, the screen is an LCD screen, and the display data is synthesized data output by each layer win of the LCD.
A memory variable frequency window period display system comprises a display cache module, a display controller and a memory controller, wherein the display controller comprises a threshold judgment submodule and a calling submodule;
the display cache module is used for outputting the display data generated by the output layer to a cache region in the display controller and then transmitting the display data to a screen for display;
the threshold judging submodule is used for judging that the display data in the buffer area exceeds a threshold and sending a notification signal to the memory controller, and the calling submodule is used for calling the data in the buffer area to be transmitted to a screen for display after the memory starts frequency conversion.
Specifically, the system further comprises a read-write configuration module, and the read-write configuration module is used for configuring the system into a DDR read-write mode which preferentially responds to the VOP after the memory starts frequency conversion.
Optionally, the screen is an LCD screen, and the display data is synthesized data output by each layer win of the LCD.
Be different from prior art, above-mentioned technical scheme provides the data output when the memory frequency conversion through increasing the buffer memory for the card pause can not shown in the time of the internal existence carries out the frequency conversion, and can further reach and carry out DDR frequency conversion at will and do not influence the effect that shows.
Drawings
Fig. 1 is a flowchart of a memory variable frequency window period display method according to an embodiment;
fig. 2 is a block diagram of a memory variable frequency window period system according to an embodiment.
Description of reference numerals:
200. a display cache module;
202. a display controller;
2020. a threshold judgment submodule;
2022. calling a submodule;
204. a memory controller;
206. a read-write configuration module;
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, a method for displaying a variable frequency window period of a memory according to the present embodiment includes steps of S100 outputting display data generated by an output layer of a display to a buffer area in a display controller, and then transmitting the display data to a screen for display;
s102, when the display data in the buffer area exceeds the threshold value, a notification signal is sent to the memory controller, and S104, when the memory starts frequency conversion, the display controller calls the data in the buffer area to transmit the data to a screen for display.
For a specific display, the DDR conversion time is fixed and known, and assuming that the duration is a time, this means that enough display data needs to be output to the screen in the period a of the DDR conversion, and it is ensured that the influence caused by the conversion is not sensed on the user interface. Therefore, in the method, only the output of the display needs to be set to be the buffer area of the display controller to output the generated data, the generated data cannot be directly output to the screen, the display data in the buffer area is slowly output to the screen for display according to the frame rate of the display, and the buffer area has more and more display data accumulation. The threshold value of the data amount may be set to a value larger than the display data amount required for the memory time. And when the data volume exceeds the threshold value, informing the memory controller of the storage condition of the data volume, and informing that screen display can be carried out during the frequency conversion of the memory. And then when the memory needs to be subjected to frequency conversion, the DDR starts the frequency conversion, the frequency conversion is completed within the time period A, and display data in the buffer area are continuously output to a screen until the DDR finishes the frequency conversion. Through the method, the DDR frequency conversion achieves the technical effect of carrying out blanking operation at any time. In the existing blanking period frequency conversion method, a blanking period needs to be waited for after applying ddr frequency conversion, and if the display frame rate is 60 frames per second, 1/60s needs to be waited for, the system can start frequency conversion.
In a further specific embodiment, the screen is an LCD screen, and the display data is synthesized data output by each layer win of the LCD. The LCD screen has two layers of outputs of win0 and win1, can leave each layer of output data in the buffer area, can reduce the operand, when DDR frequency conversion starts, uses the buffer data after win0 and win1 are synthesized to show, then can play the effect that promotes the display efficiency better, can normally show when the frequency conversion is carried out to the DRAM. In other embodiments, however, the layers may be combined to provide cushioning. The method can use only the buffer of each layer (saving cost), and can also use the buffer after synthesis, which is beneficial to improving the display efficiency.
In a further embodiment, the threshold of the amount of buffered data is: lbuffer ═ ftime/lime + 1; where Lbuffer is the number of lines of data to be buffered for frequency conversion, ftime is the time required for memory frequency conversion, time that one line of data can be displayed is very, and +1 is +1 to expand a decimal number considering that a partial operation is an integer operation, for example, 5/2 ═ 2 is not 2.5. In this case, the method allows the memory to be frequency-converted when the amount of buffered data exceeds a threshold. In other embodiments, the LCD performs memory frequency conversion in parallel with the blanking line and the buffer threshold, in which case, the buffer data amount threshold may be: lbuffer/ltime + 1-lp; wherein lp is the blanking line number of the LCD display, in this case, since the frame blanking period does not need to display data, the frequency conversion requirement of ddr can be satisfied by buffering the data before or after the frame blanking period.
In some further embodiments, the method further includes configuring the system to preferentially respond to the DDR read-write mode of the VOP after the memory starts the frequency conversion. Through the adjusting step, the access of other modules to the DDR can be limited or the priority of the DDR can be improved in some embodiments; so that the system will preferentially perform VOP buffer data stuffing. The storage speed of the cache data is improved, and the problem that the cache data is insufficient after the memory starts frequency conversion is solved.
In the embodiment shown in fig. 2, it can be seen that the memory variable frequency window period display system of the present invention includes a display cache module 200, a display controller 202, and a memory controller 204, where the display controller includes a threshold determination sub-module 2020 and a call sub-module 2022;
the display buffer module 200 is configured to output display data generated by an output layer of a display to a buffer area in a display controller, and then transmit the display data to a screen for display;
the threshold value judging submodule 2020 is configured to judge that display data in the buffer area exceeds a threshold value, and is further configured to send a notification signal to the memory controller, and the calling submodule is configured to call, after the memory starts frequency conversion, the data in the buffer area to be transmitted to a screen for display.
Through the design, the system achieves the technical effect of carrying out blanking operation at any time, and does not jam or drop frames.
In a specific embodiment, the system further includes a read-write configuration module 206, where the read-write configuration module is configured to configure the system into a DDR read-write mode that preferentially responds to the VOP after the memory starts frequency conversion. Through the design, the system can better improve the storage speed of the cache data and avoid the problem of insufficient cache data after the memory starts frequency conversion.
In other optional embodiments, the screen is an LCD screen, and the display data is composite data output by each layer win of the LCD.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (6)
1. A memory frequency conversion window period display method is characterized by comprising the following steps that display data generated by an output layer of a display are output to a cache region in a display controller and then transmitted to a screen for display;
and when the display data in the buffer area exceeds the threshold value, sending a notification signal to the memory controller, and when the memory starts frequency conversion, calling the data in the buffer area by the display controller and transmitting the data to a screen for display.
2. The memory frequency conversion window period display method according to claim 1, further comprising the step of configuring a system to preferentially respond to a DDR read-write mode of the VOP when the memory starts frequency conversion.
3. The method according to claim 1, wherein the screen is an LCD screen, and the display data is synthesized data output by each layer win of the LCD.
4. A memory variable frequency window period display system is characterized by comprising a display cache module, a display controller and a memory controller, wherein the display controller comprises a threshold judgment submodule and a calling submodule;
the display cache module is used for outputting the display data generated by the output layer to a cache region in the display controller and then transmitting the display data to a screen for display;
the threshold judging submodule is used for judging that the display data in the buffer area exceeds a threshold and sending a notification signal to the memory controller, and the calling submodule is used for calling the data in the buffer area to be transmitted to a screen for display after the memory starts frequency conversion.
5. The memory frequency conversion window period display system of claim 4, further comprising a read-write configuration module, wherein the read-write configuration module is configured to configure the system to a DDR read-write mode that preferentially responds to VOP after the memory starts frequency conversion.
6. The system according to claim 4, wherein the screen is an LCD screen, and the display data is synthesized data output by each layer win of the LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810047347.XA CN108281119B (en) | 2018-01-18 | 2018-01-18 | Memory variable frequency window period display method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810047347.XA CN108281119B (en) | 2018-01-18 | 2018-01-18 | Memory variable frequency window period display method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108281119A CN108281119A (en) | 2018-07-13 |
| CN108281119B true CN108281119B (en) | 2020-05-15 |
Family
ID=62803891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810047347.XA Active CN108281119B (en) | 2018-01-18 | 2018-01-18 | Memory variable frequency window period display method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108281119B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110727340B (en) * | 2019-09-26 | 2021-03-02 | 瑞芯微电子股份有限公司 | Method, device and system for adapting dynamic bandwidth of image acquisition display |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299326A (en) * | 2007-05-14 | 2008-11-05 | 深圳艾科创新微电子有限公司 | Length-changing storage-display pre-read system and method for graphic display system |
| JP2010213173A (en) * | 2009-03-12 | 2010-09-24 | Canon Inc | Image capturing apparatus |
| CN202221645U (en) * | 2011-08-15 | 2012-05-16 | 浙江博视电子科技股份有限公司 | Eight-channel high-definition image display device |
| CN103761152A (en) * | 2013-12-31 | 2014-04-30 | 福州瑞芯微电子有限公司 | Method for preventing display anomaly during DDR (double data rate) frequency conversion |
| CN104317542A (en) * | 2014-10-10 | 2015-01-28 | 福州瑞芯微电子有限公司 | Method and system for converting frequency of internal storage |
| CN105897759A (en) * | 2016-06-14 | 2016-08-24 | 青岛乾元通数码科技有限公司 | Network dynamic self-adaptive audio and video caching method and system |
| CN106293205A (en) * | 2016-07-29 | 2017-01-04 | 努比亚技术有限公司 | A kind of screen spot reply devices and methods therefor |
-
2018
- 2018-01-18 CN CN201810047347.XA patent/CN108281119B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299326A (en) * | 2007-05-14 | 2008-11-05 | 深圳艾科创新微电子有限公司 | Length-changing storage-display pre-read system and method for graphic display system |
| JP2010213173A (en) * | 2009-03-12 | 2010-09-24 | Canon Inc | Image capturing apparatus |
| CN202221645U (en) * | 2011-08-15 | 2012-05-16 | 浙江博视电子科技股份有限公司 | Eight-channel high-definition image display device |
| CN103761152A (en) * | 2013-12-31 | 2014-04-30 | 福州瑞芯微电子有限公司 | Method for preventing display anomaly during DDR (double data rate) frequency conversion |
| CN104317542A (en) * | 2014-10-10 | 2015-01-28 | 福州瑞芯微电子有限公司 | Method and system for converting frequency of internal storage |
| CN105897759A (en) * | 2016-06-14 | 2016-08-24 | 青岛乾元通数码科技有限公司 | Network dynamic self-adaptive audio and video caching method and system |
| CN106293205A (en) * | 2016-07-29 | 2017-01-04 | 努比亚技术有限公司 | A kind of screen spot reply devices and methods therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108281119A (en) | 2018-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10621953B2 (en) | Method for controlling display refresh rate and electronic device | |
| CN113160748B (en) | Display screen frequency conversion method, display driving integrated circuit chip and application processor | |
| JP6069354B2 (en) | Receiving apparatus, video refresh frequency control method, apparatus and system | |
| US9905199B2 (en) | Processor for use in dynamic refresh rate switching and related electronic device and method | |
| WO2019091206A1 (en) | Method and apparatus for controlling refresh frequency, timing controller, and display apparatus | |
| CN103390397B (en) | Double screen display device and method based on Android system | |
| WO2017012310A1 (en) | Method and system for reducing power consumption of mobile terminal | |
| US9953613B2 (en) | High speed display interface | |
| CN103177680A (en) | Devices and method of adjusting synchronization signal preventing tearing and flicker | |
| CN107004398B (en) | Display control unit, display device and display control method | |
| US9286851B2 (en) | Display panel driving device and driving method for saving electrical energy thereof | |
| US11145238B2 (en) | Method for controlling image graphing of terminal, nontransitory computer-readable storage medium, and terminal | |
| CN107493448A (en) | Image processing system, method for displaying image and display device | |
| KR20130040251A (en) | Techniques to control display activity | |
| CN107015629B (en) | Processing method and electronic device | |
| US20170323419A1 (en) | Systems and methods for time shifting tasks | |
| KR20220143667A (en) | Reduced display processing unit delivery time to compensate for delayed graphics processing unit render times | |
| WO2015100309A1 (en) | Previewing notification content | |
| WO2023061096A1 (en) | Method and apparatus for adjusting refresh frame rate of display screen, and processor, chip and terminal | |
| CN116052618B (en) | Screen refresh rate switching method and electronic equipment | |
| CN108281119B (en) | Memory variable frequency window period display method and system | |
| US11887276B2 (en) | Image processing method and display apparatus for adjusting format and resolution of input image in parallel and matrix manner | |
| US20130044086A1 (en) | Display panel driving device and driving method thereof | |
| US7081874B2 (en) | Portable display device and method utilizing embedded still image buffer to facilitate full motion video playback | |
| US11169683B2 (en) | System and method for efficient scrolling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 350003 building, No. 89, software Avenue, Gulou District, Fujian, Fuzhou 18, China Patentee after: Ruixin Microelectronics Co., Ltd Address before: 350003 building, No. 89, software Avenue, Gulou District, Fujian, Fuzhou 18, China Patentee before: Fuzhou Rockchips Electronics Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |