CN203243440U - Video signal conversion apparatus for converting HDMI to VGA - Google Patents
Video signal conversion apparatus for converting HDMI to VGA Download PDFInfo
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- CN203243440U CN203243440U CN 201320105063 CN201320105063U CN203243440U CN 203243440 U CN203243440 U CN 203243440U CN 201320105063 CN201320105063 CN 201320105063 CN 201320105063 U CN201320105063 U CN 201320105063U CN 203243440 U CN203243440 U CN 203243440U
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Abstract
The utility model provides a video signal conversion apparatus for converting HDMI to VGA, including an HDMI input interface, an HDMI signal receiving module, a video processing module, a memory module, a VGA output interface, an MCU, a button, a multi-channel video high-speed switch and a power supply module. An HDMT interface is connected with the HDMI receiving module and the MCU. The HDMI receiving module is connected with the video processing module. The HDMI receiving module is connected with the MCU via an I2C bus. The video processing module is connected with the memory module. The video processing module is connected with the MCU via the I2C bus. The video processing module is connected with the VGA output interface. The MCU is connected with the multi-channel video high-speed switch. The multi-channel video high-speed switch is connected with the VGA output interface. The video processing module is connected with the VGA output interface. The MCU is connected with the button. The power supply module supplies power to the HDMI receiving module, the video processing module, the memory module, the MCU and the multi-channel video high-speed switch. The video signal conversion apparatus is adaptable to a target display, can meet the different conversion needs of users, and has the advantages of high accuracy, small loss for source signals, and fast processing speed.
Description
Technical field
The utility model relates to the technical field that HDMI turns the vision signal conversion equipment of VGA.
Background technology
The most computer, LCD TV, the products such as plasm TV with the audio-video signal interface often not identical, if any only with HDMI interface or VGA interface, connection will bring inconvenience like this, for example, with the HDMI interface not with the desktop computer of VGA interface or notebook computer with the VGA interface not LCD TV or the plasm TV with the HDMI interface be connected, or with the VGA interface not with the desktop computer of HDMI interface or notebook computer with the HDMI interface not LCD TV or the plasm TV with the VGA interface be connected, namely only brought very large inconvenience with the equipment of HDMI interface with interconnecting to people between the equipment of VGA interface.
The utility model content
The purpose of this utility model provides a kind of to the target indicator strong adaptability, can satisfy user's different switching demand, has the vision signal conversion equipment that precision height, source signal loss HDMI little, that processing speed is fast turns VGA.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of HDMI turns the vision signal conversion equipment of VGA, it is characterized in that: the vision signal conversion equipment that described HDMI turns VGA comprises HDMI input interface, HDMI signal receiving module, video processing module, memory module, VGA output interface, MCU, button, multi-channel video speed-sensitive switch and power module, the HDMI interface is connected with the HDMI receiver module, the HDMI interface is connected with MCU, the HDMI receiver module is connected with video processing module, and the HDMI receiver module passes through I
2The C bus is connected with MCU, and video processing module is connected with memory, and video processing module passes through I
2The C bus is connected with MCU, video processing module is connected with the VGA output interface, MCU is connected with the multi-channel video speed-sensitive switch, the multi-channel video speed-sensitive switch is connected with the VGA output interface, video processing module is connected with the VGA output interface, MCU is connected with button, power module is to the HDMI receiver module, video processing module, memory, MCU and multi-channel video speed-sensitive switch are powered, and by the HDMI signal receiving module standard HDMI of HDMI input interface are converted to 24 RGB digital signals or 16 YUV digital signals, line synchronizing signal (HSyncIN) and field sync signal (VSyncIN); 24 RGB digital signals or 16 YUV digital signals, line synchronizing signal (HSyncIN) and field sync signals (VSyncIN) be input to carry out in the video processing module that proportional zoom processes, goes that interlacing processing, color space conversion are processed, digital-to-analogue conversion processing and synchronous sequence conversion process, and generate analog rgb signal, line synchronizing signal (HSyncOUT) and field sync signal (HSyncOUT); Memory module provides the data buffer storage function at video processing procedure; Analog rgb signal and line synchronizing signal (HSyncOUT) and field sync signal (HSyncOUT) output to the VGA output interface after via multi-channel video speed-sensitive switch and osd signal aliasing; MCU is by the HDMI receiver module of described connection, the line synchronizing signal (HSyncIN) and the field sync signal (VSyncIN) that detect input signal are in real time judged the incoming video signal form, and according to the control of the external key of target output signal or inside are preseted, the call instruction parameter is passed through I
2The C bus respectively to the chip register in HDMI signal receiving module, the video processing module to the configuration.
Described MCU meets pin HSync and the VSync of HDMI signal receiving module, constantly detect line synchronizing signal (HSyncIN) and the field sync signal (VSyncIN) of incoming video signal, judge the incoming video signal form, when judging that the incoming video signal form changes, MCU passes through I
2The C bus writes the configuration data of new conversion plan to video processing module.
Described MCU regularly passes through I
2The C bus reads the related register flag bit of HDMI signal receiving module, judges the color space type of current incoming video signal, and when judging that color space changes, MCU passes through I
2The C bus is carried out the writing of configuration data of color space conversion to the HDMI signal receiving module.
The utility model compared with prior art has following beneficial effect:
1) technical scheme described in the utility model is compared other single-chip conversion plans, the utility model can be converted to multiple HDMI pattern of the input the VGA signal of different-format, to the target indicator strong adaptability, customizability is high, can satisfy user's different switching demand.
2) input signal is converted to 24 RGB digital signals or 16 YUV digital signals are processed again, has the advantages such as precision height, the source signal loss is little, processing speed is fast.
3) automatically detect input signal, dynamic-configuration HDMI signal receiving module, video processing module.
4) the dynamic black and white image expansion of video processing module support, dynamic carrier chrominance signal are improved the videos such as (DCTI), dynamic range expansion, brightness, saturation, contrast and tone, three-dimensional noise reduction, both scan velocity modulation (SVM), Dynamic Two-dimensional peak regulation, dimensional Co ring, two-dimension non linearity convergent-divergent, primary colors enhancing, colour of skin enhancing, blue level extension and are strengthened function.
Description of drawings
Fig. 1 is the functional-block diagram that the utility model HDMI turns the vision signal conversion equipment of VGA;
Fig. 2 is the functional-block diagram that the utility model HDMI turns the vision signal conversion equipment of VGA;
Fig. 3 is the circuit diagram of the HDMI input interface of the utility model HDMI vision signal conversion equipment of turning VGA;
Fig. 4-1 and Fig. 4-the 2nd, the utility model HDMI turns the HDMI signal receiving module circuit diagram of the vision signal conversion equipment of VGA;
Fig. 5 is the VGA output interface circuit figure of the utility model HDMI vision signal conversion equipment of turning VGA; Embodiment
Below in conjunction with accompanying drawing the vision signal conversion equipment that the utility model HDMI turns VGA is described in detail.
Such as Fig. 1-3 Fig. 2, Fig. 4-1, Fig. 4-2 and Fig. 5, the utility model HDMI turns the vision signal conversion equipment of VGA, it is characterized in that: the vision signal conversion equipment that described HDMI turns VGA comprises HDMI input interface, HDMI signal receiving module, video processing module, memory module, VGA output interface, MCU, button, multi-channel video speed-sensitive switch and power module, the HDMI interface is connected with the HDMI receiver module, the HDMI interface is connected with MCU, the HDMI receiver module is connected with video processing module, and the HDMI receiver module passes through I
2The C bus is connected with MCU, and video processing module is connected with memory, and video processing module passes through I
2The C bus is connected with MCU, video processing module is connected with the VGA output interface, MCU is connected with the multi-channel video speed-sensitive switch, the multi-channel video speed-sensitive switch is connected with the VGA output interface, video processing module is connected with the VGA output interface, MCU is connected with button, power module is to the HDMI receiver module, video processing module, memory, MCU and multi-channel video speed-sensitive switch are powered, and by the HDMI signal receiving module standard HDMI of HDMI input interface are converted to 24 RGB digital signals or 16 YUV digital signals, line synchronizing signal (HSyncIN) and field sync signal (VSyncIN); 24 RGB digital signals, line synchronizing signal (HSyncIN) and field sync signals (VSyncIN) be input to carry out in the video processing module that proportional zoom processes, goes that interlacing processing, color space conversion are processed, digital-to-analogue conversion processing and synchronous sequence conversion process, and generate analog rgb signal, line synchronizing signal (HSyncOUT) and field sync signal (HSyncOUT); Memory module provides the data buffer storage function at video processing procedure; Analog rgb signal and line synchronizing signal (HSyncOUT) and field sync signal (HSyncOUT) output to the VGA output interface after via multi-channel video speed-sensitive switch and osd signal aliasing; MCU is by the HDMI receiver module of described connection, the line synchronizing signal (HSyncIN) and the field sync signal (VSyncIN) that detect input signal are in real time judged the incoming video signal form, and according to the control of the external key of target output signal or inside are preseted, the call instruction parameter is passed through I
2The C bus respectively to the chip register in HDMI signal receiving module, the video processing module to the configuration.
In Fig. 2, be described below more specifically: the HDMI interface is connected with the HDMI receiver module, to the TMDS vision signal of 8 of HDMI receiver module inputs; The HDMI interface is connected with MCU, and whether MCU is by carrying out setting high of level and dragging down notification signal source device the machine to be ready to or notification signal equipment re-starts the checking such as HDCP action to the HPD pin; The HDMI receiver module is connected with video processing module, and the HDMI receiver module is to digital rgb signal or 16 YUV digital signals, line synchronizing signal (HSyncIN) and field sync signals (VSyncIN) of 24 of video processing module inputs; The HDMI receiver module is connected to carry out data communication and control by the I2C bus with MCU, and to MCU line of input synchronizing signal (HSyncIN) and field sync signal (VSyncIN) to allow MCU that input signal is judged; Video processing module is connected with memory, writes or read data cached to memory in video processing procedure; Video processing module is connected to carry out data communication and control by the I2C bus with MCU, and it is synchronous to realize that to MCU line of input synchronizing signal (HSyncOUT), field sync signal (VSyncOUT) and pixel clock signal PCLK osd signal generates and exports; Video processing module is connected with the multi-channel video speed-sensitive switch, to the rgb signal of 3 of multi-channel video speed-sensitive switch input simulations; Video processing module is connected with the VGA output interface, to VGA output interface line of input synchronizing signal (HSyncOUT), field sync signal (VSyncOUT); MCU is connected with the multi-channel video speed-sensitive switch, to 3 analog rgb osd signals of multi-channel video speed-sensitive switch input; The multi-channel video speed-sensitive switch is connected with the VGA output interface, will be input to the VGA output interface behind the analog rgb signal aliasing from video processing module and MCU; MCU connects to realize carrying out relevant video switching motion from external control MCU with button.
Workflow: start powers on, MCU drags down the HPD pin level, the MCU initialization, and by the I2C bus HDMI receiver module (chip I TE6604) and video processing module (chip TV5735) are write the initial configuration data, MCU sets high the HPD pin level.MCU connects the pin HSync of receiver module (chip I TE6604) and line synchronizing signal (HSyncIN) and the field sync signal (VSyncIN) that VSync constantly detects incoming video signal, judge the incoming video signal form, when judging that the incoming video signal form changes, MCU writes the configuration data of new conversion plan to video processing module (chip TV5735) by the I2C bus.MCU regularly reads the related register flag bit of receiver module (chip I TE6604) by the I2C bus, judge the color space type of current incoming video signal, when judging that color space changes, MCU carries out the writing of configuration data of color space conversion to receiver module (chip I TE6604) by the I2C bus.Incoming video signal is converted to 24 RGB or YUV signal through the HDMI receiver module; Be input to video processing module completed percentage convergent-divergent and process, go interlacing processing, color space conversion processing, digital-to-analogue conversion processing and synchronous sequence conversion process; Video processing module finally generates output analog rgb signal and line synchronizing signal (HSyncOUT) and field sync signal (HSyncOUT) and arrives the VGA output interface after via multi-channel video speed-sensitive switch and osd signal aliasing.
Claims (3)
1. a HDMI turns the vision signal conversion equipment of VGA, it is characterized in that: the vision signal conversion equipment that described HDMI turns VGA comprises HDMI input interface, HDMI signal receiving module, video processing module, memory module, VGA output interface, MCU, button, multi-channel video speed-sensitive switch and power module, the HDMI interface is connected with the HDMI receiver module, the HDMI interface is connected with MCU, the HDMI receiver module is connected with video processing module, and the HDMI receiver module passes through I
2The C bus is connected with MCU, and video processing module is connected with memory, and video processing module passes through I
2The C bus is connected with MCU, video processing module is connected with the VGA output interface, MCU is connected with the multi-channel video speed-sensitive switch, the multi-channel video speed-sensitive switch is connected with the VGA output interface, video processing module is connected with the VGA output interface, MCU is connected with button, power module is to the HDMI receiver module, video processing module, memory, MCU and multi-channel video speed-sensitive switch are powered, and by the HDMI signal receiving module standard HDMI of HDMI input interface are converted to 24 RGB digital signals or 16 YUV digital signals, line synchronizing signal (HSyncIN) and field sync signal (VSyncIN); 24 RGB digital signals or 16 YUV digital signals, line synchronizing signal (HSyncIN) and field sync signals (VSyncIN) be input to carry out in the video processing module that proportional zoom processes, goes that interlacing processing, color space conversion are processed, digital-to-analogue conversion processing and synchronous sequence conversion process, and generate analog rgb signal, line synchronizing signal (HSyncOUT) and field sync signal (HSyncOUT); Memory module provides the data buffer storage function at video processing procedure; Analog rgb signal and line synchronizing signal (HSyncOUT) and field sync signal (HSyncOUT) output to the VGA output interface after via multi-channel video speed-sensitive switch and osd signal aliasing; MCU is by the HDMI receiver module of described connection, the line synchronizing signal (HSyncIN) and the field sync signal (VSyncIN) that detect input signal are in real time judged the incoming video signal form, and according to the control of the external key of target output signal or inside are preseted, the call instruction parameter is passed through I
2The C bus respectively to the chip register in HDMI signal receiving module, the video processing module to the configuration.
2. described HDMI turns the vision signal conversion equipment of VGA according to claim 1, it is characterized in that: described MCU meets pin HSync and the VSync of HDMI signal receiving module, constantly detect line synchronizing signal (HSyncIN) and the field sync signal (VSyncIN) of incoming video signal, judge the incoming video signal form, when judging that the incoming video signal form changes, MCU passes through I
2The C bus writes the configuration data of new conversion plan to video processing module.
3. described HDMI turns the vision signal conversion equipment of VGA according to claim 1, and it is characterized in that: described MCU regularly passes through I
2The C bus reads the related register flag bit of HDMI signal receiving module, judges the color space type of current incoming video signal, and when judging that color space changes, MCU passes through I
2The C bus is carried out the writing of configuration data of color space conversion to the HDMI signal receiving module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105063 CN203243440U (en) | 2013-03-08 | 2013-03-08 | Video signal conversion apparatus for converting HDMI to VGA |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105063 CN203243440U (en) | 2013-03-08 | 2013-03-08 | Video signal conversion apparatus for converting HDMI to VGA |
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| CN203243440U true CN203243440U (en) | 2013-10-16 |
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| CN 201320105063 Expired - Fee Related CN203243440U (en) | 2013-03-08 | 2013-03-08 | Video signal conversion apparatus for converting HDMI to VGA |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935999A (en) * | 2015-06-02 | 2015-09-23 | 浪潮集团有限公司 | VGA signal selection switching module and method applied to OSD menu |
| CN108184090A (en) * | 2017-12-07 | 2018-06-19 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of CMOS cameras multiresolution VESA videos are to the automatic switching method of BT1120 protocol videos |
| CN109413356A (en) * | 2018-12-10 | 2019-03-01 | 厦门视诚科技有限公司 | A kind of HDMI high image quality synchronization de interlacing system and method |
| CN111083416A (en) * | 2018-10-19 | 2020-04-28 | 杭州海康威视数字技术股份有限公司 | Data processing method and device, electronic equipment and readable storage medium |
| CN112908226A (en) * | 2021-01-22 | 2021-06-04 | 亚世光电(集团)股份有限公司 | Method and device for detecting display screen parameter switching by using HDMI (high-definition multimedia interface) of PC (personal computer) |
-
2013
- 2013-03-08 CN CN 201320105063 patent/CN203243440U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935999A (en) * | 2015-06-02 | 2015-09-23 | 浪潮集团有限公司 | VGA signal selection switching module and method applied to OSD menu |
| CN108184090A (en) * | 2017-12-07 | 2018-06-19 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of CMOS cameras multiresolution VESA videos are to the automatic switching method of BT1120 protocol videos |
| CN108184090B (en) * | 2017-12-07 | 2020-09-22 | 中国航空工业集团公司西安航空计算技术研究所 | Automatic conversion method for multi-resolution VESA video of CMOS camera to BT1120 protocol video |
| CN111083416A (en) * | 2018-10-19 | 2020-04-28 | 杭州海康威视数字技术股份有限公司 | Data processing method and device, electronic equipment and readable storage medium |
| CN111083416B (en) * | 2018-10-19 | 2021-04-27 | 杭州海康威视数字技术股份有限公司 | Data processing method and device, electronic equipment and readable storage medium |
| CN109413356A (en) * | 2018-12-10 | 2019-03-01 | 厦门视诚科技有限公司 | A kind of HDMI high image quality synchronization de interlacing system and method |
| CN109413356B (en) * | 2018-12-10 | 2023-08-01 | 厦门视诚科技有限公司 | HDMI high-image-quality synchronous de-interlacing system and method |
| CN112908226A (en) * | 2021-01-22 | 2021-06-04 | 亚世光电(集团)股份有限公司 | Method and device for detecting display screen parameter switching by using HDMI (high-definition multimedia interface) of PC (personal computer) |
| CN112908226B (en) * | 2021-01-22 | 2022-07-01 | 亚世光电(集团)股份有限公司 | Method and device for detecting display screen parameter switching by using HDMI (high-definition multimedia interface) of PC (personal computer) host |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20160308 |
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| CF01 | Termination of patent right due to non-payment of annual fee |