CN107040736A - A kind of display interface module and OSD display control methods based on FPGA - Google Patents
A kind of display interface module and OSD display control methods based on FPGA Download PDFInfo
- Publication number
- CN107040736A CN107040736A CN201710211102.1A CN201710211102A CN107040736A CN 107040736 A CN107040736 A CN 107040736A CN 201710211102 A CN201710211102 A CN 201710211102A CN 107040736 A CN107040736 A CN 107040736A
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- China
- Prior art keywords
- modules
- fpga
- osd
- module
- lvds
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42653—Internal components of the client ; Characteristics thereof for processing graphics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4856—End-user interface for client configuration for language selection, e.g. for the menu or subtitles
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Computer Graphics (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention relates to a kind of display interface module based on FPGA and OSD display control methods, it includes AD conversion module, AD conversion module is connected with FPGA module, FPGA module is connected with MUX data selecting modules, MUX data selecting modules are connected with FIFO control modules, FIFO control modules are also associated with LVDS sending modules, and LVDS sending modules are connected to LCDs；MUX data selecting modules are also associated with OSD RAM modules；FIFO control modules are also associated with Button modules, and Button modules are also associated with PWM control modules, the described LCDs of PWM control modules connection；The interface module also includes OSD finite state machine modules, the connection of OSD finite state machines module described FPGA module, MUX data selecting modules, FIFO control modules and LVDS transmitter modules.
Description
Technical field
The invention belongs to FPGA technology field, and in particular to a kind of display interface module and OSD display control based on FPGA
Method processed.
Background technology
In the prior art, the signal of common video card output has the interfaces such as VGA, DVI, HDMI, with the output driving liquid of video card
, it is necessary to carry out interface conversion during brilliant screen；Interface conversion of the prior art can not realize the driving of a variety of screens.This is existing
The weak point of technology.
Therefore, for drawbacks described above of the prior art, there is provided design a kind of display interface module and OSD based on FPGA
Display control method；To solve above-mentioned technical problem, it is necessary.
The content of the invention
It is an object of the present invention in view of the above-mentioned drawbacks of the prior art, provide design a kind of showing based on FPGA
Show interface module and OSD display control methods, to solve above-mentioned technical problem.
To achieve the above object, the present invention provides following technical scheme：
A kind of display interface module based on FPGA, it includes AD conversion module, it is characterised in that：Described AD conversion module connects
FPGA module is connected to, described FPGA module is connected with MUX data selecting modules, and described MUX data selecting modules are connected with
FIFO control modules, described FIFO control modules are also associated with LVDS sending modules, and described LVDS sending modules are connected to
LCDs；
Described MUX data selecting modules are also associated with OSD RAM modules；
Described FIFO control modules are also associated with Button modules, and described Button modules are also associated with PWM control modules,
The described LCDs of described PWM control modules connection；
The interface module also includes OSD finite state machine modules, the described FPGA moulds of described OSD finite state machines module connection
Block, MUX data selecting modules, FIFO control modules and LVDS transmitter modules.
A kind of OSD display control methods based on FPGA, comprise the following steps：
Step 1）：VGA signals are converted into 24 TTL signals and are transferred to FPGA by AD conversion module；
Step 2）：FPGA is sampled, and data and row field signal are kept in internal mass FIFO, number is read from FIFO
According to when output interface form judged according to output interface selection signal, single channel LVDS and bilateral are counted by LVDS_TX modules
Road LVDS；
Step 3）：OSD module is additionally provided with inside FPGA, display data is stored in internal ram, is called and is directed to by button
OSD finite state machine shows OSD interfaces in the fixed position of screen, realizes regulation screen intensity, color saturation.
Preferably, described step 2）In it is further comprising the steps of：
Judge the pattern that toggle switch is set, binary channels LVDS signals are exported by LVD_UTX, resolution ratio can be with this pattern
Highest is supported to arrive 1920*1080.
Preferably, described step 2）In it is further comprising the steps of：
Judge the pattern that toggle switch is set, exported and differentiated under single channel LVDS signals, this pattern by LVDS_LTX modules
Rate can be supported to arrive 1366*768 with highest.
Display data can be stored in ram inside FPGA with the brightness of adjustable liquid crystal display screen and saturation degree by OSD module in module
In, display data includes coordinate, character to be superimposed, color table that OSD is shown etc., is added to by blender in FIFO.
Brightness realizes that display data in FIFO is directly transformed into HSL spaces by saturation degree by directly adjusting the dutycycle of pwm signal
（Form and aspect (H), saturation degree (S), lightness (L)）, the saturation degree adjustment for completing image is adjusted to each pixel.
The beneficial effects of the present invention are by the technical scheme, realize the OSD display controls based on FPGA module, lead to
The collection to VGA signals and selection are crossed, the driving to a variety of screens can be realized.In addition, design principle of the present invention is reliable, knot
Structure is simple, with application prospect widely.
As can be seen here, the present invention compared with prior art, improves with prominent substantive distinguishing features and significantly, and it is implemented
Beneficial effect be also obvious.
Brief description of the drawings
Fig. 1 is a kind of control principle drawing for display interface module based on FPGA that the present invention is provided.
Wherein, 1-AD modular converters, 2-FPGA modules, 3-MUX data selecting modules, 4-FIFO control modules, 5-LVDS
Sending module, 6- LCDs, 7-OSD RAM modules, 8-Button modules, 9-PWM control modules, 10-OSD finite states
Machine module.
Embodiment
Below in conjunction with the accompanying drawings and the present invention will be described in detail by specific embodiment, following examples are to the present invention
Explanation, and the invention is not limited in implementation below.
As shown in figure 1, a kind of display interface module based on FPGA that the present invention is provided, it includes AD conversion module 1, institute
The AD conversion module 1 stated is connected with FPGA module 2, and described FPGA module 2 is connected with MUX data selecting modules 3, described
MUX data 3 pieces of mould of selection is connected with FIFO control modules 4, and described FIFO control modules 4 are also associated with LVDS sending modules 5,
Described LVDS sending modules 5 are connected to LCDs 6；
Described MUX data selecting modules 3 are also associated with OSD RAM modules 7；
Described FIFO control modules 4 are also associated with Button modules 8, and described Button modules 8 are also associated with PWM control moulds
Block 9, described PWM control modules 9 connect described LCDs 6；
The interface module also includes OSD finite state machines module 10, and described OSD finite state machines module 10 connects described
FPGA module 2, MUX data selecting modules 3, FIFO control modules 4 and LVDS transmitter modules 5.
The present invention gives a kind of OSD display control methods based on FPGA, comprises the following steps：
Step 1）：VGA signals are converted into 24 TTL signals and are transferred to FPGA by AD conversion module；
Step 2）：FPGA is sampled, and data and row field signal are kept in internal mass FIFO, number is read from FIFO
According to when output interface form judged according to output interface selection signal, single channel LVDS and bilateral are counted by LVDS_TX modules
Road LVDS；
Step 3）：OSD module is additionally provided with inside FPGA, display data is stored in internal ram, is called and is directed to by button
OSD finite state machine shows OSD interfaces in the fixed position of screen, realizes regulation screen intensity, color saturation.
In the present embodiment, described step 2）In it is further comprising the steps of：
Judge the pattern that toggle switch is set, binary channels LVDS signals are exported by LVD_UTX, resolution ratio can be with this pattern
Highest is supported to arrive 1920*1080.
In other embodiments, described step 2）In it is further comprising the steps of：
Judge the pattern that toggle switch is set, exported and differentiated under single channel LVDS signals, this pattern by LVDS_LTX modules
Rate can be supported to arrive 1366*768 with highest.
Disclosed above is only the preferred embodiment of the present invention, but the present invention is not limited to this, any this area
What technical staff can think does not have a creative change, and some improvement made without departing from the principles of the present invention and
Retouching, should all be within the scope of the present invention.
Claims (4)
1. a kind of display interface module based on FPGA, it includes AD conversion module（1）, it is characterised in that described AD conversion
Module（1）It is connected with FPGA module（2）, described FPGA module（2）It is connected with MUX data selecting modules（3）, described MUX
Data select mould（3）Block is connected with FIFO control modules（4）, described FIFO control modules（4）It is also associated with LVDS and sends mould
Block（5）, described LVDS sending modules（5）It is connected to LCDs（6）；
Described MUX data selecting modules（3）It is also associated with OSD RAM modules（7）；
Described FIFO control modules（4）It is also associated with Button modules（8）, described Button modules（8）It is also associated with PWM
Control module（9）, described PWM control modules（9）The described LCDs of connection（6）；
The interface module also includes OSD finite state machine modules（10）, described OSD finite state machine modules（10）Connection is described
FPGA module（2）, MUX data selecting modules（3）, FIFO control modules（4）And LVDS transmitter modules（5）.
2. a kind of OSD display control methods based on FPGA, it is characterised in that comprise the following steps：
Step 1）：VGA signals are converted into 24 TTL signals and are transferred to FPGA by AD conversion module；
Step 2）：FPGA is sampled, and data and row field signal are kept in internal mass FIFO, number is read from FIFO
According to when output interface form judged according to output interface selection signal, single channel LVDS and bilateral are counted by LVDS_TX modules
Road LVDS；
Step 3）：OSD module is additionally provided with inside FPGA, display data is stored in internal ram, is called and is directed to by button
OSD finite state machine shows OSD interfaces in the fixed position of screen, realizes regulation screen intensity, color saturation.
3. a kind of OSD display control methods based on FPGA according to claim 2, it is characterised in that described step
2）In it is further comprising the steps of：
Judge the pattern that toggle switch is set, binary channels LVDS signals are exported by LVD_UTX, resolution ratio can be with this pattern
Highest is supported to arrive 1920*1080.
4. a kind of OSD display control methods based on FPGA according to claim 2, it is characterised in that described step
2）In it is further comprising the steps of：
Judge the pattern that toggle switch is set, exported and differentiated under single channel LVDS signals, this pattern by LVDS_LTX modules
Rate can be supported to arrive 1366*768 with highest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710211102.1A CN107040736A (en) | 2017-04-01 | 2017-04-01 | A kind of display interface module and OSD display control methods based on FPGA |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710211102.1A CN107040736A (en) | 2017-04-01 | 2017-04-01 | A kind of display interface module and OSD display control methods based on FPGA |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512474A (en) * | 2002-12-26 | 2004-07-14 | Lg.������Lcd����˾ | Connector and device for driving liquid crystal display device using said connector |
| CN1713264A (en) * | 2005-07-15 | 2005-12-28 | 合肥工业大学 | Digital OSD controller based on FRGA |
| CN101533618A (en) * | 2008-03-14 | 2009-09-16 | 联想(北京)有限公司 | Display device, display method and computer |
| CN105681703A (en) * | 2016-01-19 | 2016-06-15 | 浪潮集团有限公司 | OSD chip compatible with multiple interfaces |
-
2017
- 2017-04-01 CN CN201710211102.1A patent/CN107040736A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512474A (en) * | 2002-12-26 | 2004-07-14 | Lg.������Lcd����˾ | Connector and device for driving liquid crystal display device using said connector |
| CN1713264A (en) * | 2005-07-15 | 2005-12-28 | 合肥工业大学 | Digital OSD controller based on FRGA |
| CN101533618A (en) * | 2008-03-14 | 2009-09-16 | 联想(北京)有限公司 | Display device, display method and computer |
| CN105681703A (en) * | 2016-01-19 | 2016-06-15 | 浪潮集团有限公司 | OSD chip compatible with multiple interfaces |
Non-Patent Citations (2)
| Title |
|---|
| 盛磊: "液晶显示驱动板的设计与实现", 《电视技术》 * |
| 盛磊: "面向特种LCD图像处理方法与FPGA实现研究", 《中国博士学位论文全文数据库工程科技Ⅱ辑》 * |
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Application publication date: 20170811 |
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