CN103123781A - Display port signal converter - Google Patents
Display port signal converter Download PDFInfo
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- CN103123781A CN103123781A CN2012104868461A CN201210486846A CN103123781A CN 103123781 A CN103123781 A CN 103123781A CN 2012104868461 A CN2012104868461 A CN 2012104868461A CN 201210486846 A CN201210486846 A CN 201210486846A CN 103123781 A CN103123781 A CN 103123781A
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Abstract
The invention provides a display port signal converter which comprises a display port signal input module, a display port signal conversion module, a VGA (video graphics array) signal output module, a control module, an audio signal conversion module and an audio signal output module. The control module controls work of the display port signal conversion module, the display port signal conversion module converts signals inputted from the display port signal input module into VGA signals and audio data, the VGA signal output module outputs the VGA signals outputted by the display port signal conversion module, the audio signal conversion module converts the audio data outputted by the display port signal conversion module into analog audio signals, and the audio signal output module outputs the analog audio signals outputted by the audio signal conversion module. The display port signal converter can convert the display port signals into the VGA signals and the audio signals, and sound can be heard while videos are watched.
Description
Technical field
The present invention relates to a kind of signal converter, particularly relate to a kind of Display Port signal converter that Display Port interface signal is out converted to VGA signal and sound signal.
Background technology
Along with the raising that the progress of science and technology and people require video, HD video is slowly being popularized.High sharpness video be about to popular when, do not have the display interface of high bandwidth to base oneself upon.At present, HDMI relies on the output of support audio frequency and video, the advantages such as bandwidth that are enough to play the 1080p high-definition program is provided, and forward household electrical appliances and pc domain are launched fierce attack.But, the new interface DP(Display Port that bandwidth is larger, display interface) interface can guarantee that because having sufficient bandwidth large-sized display devices has also obtained development rapidly to more high-resolution demand from now on.
In order to make the signal that Display Port interface spreads out of can compatible VGA(Video GraphicsArray commonly used, the Video Graphics Array interface) interface, generally can convert Display Port signal to the VGA signal.Yet at present market Display Port signal converter can only outputting VGA signal, can't output audio, cause absence of audio output when watching video, and affect viewing effect.
Summary of the invention
Based on this, be necessary to provide a kind of Display Port signal converter, it can convert Display Port signal to VGA signal and sound signal, can hear the function of sound when realizing watching video.
a kind of Display Port signal converter, it is characterized in that, comprise Display Port signal input module, Display Port signal conversion module, the VGA signal output module, control module, sound signal modular converter and sound signal output module, described control module is controlled the work of described Display Port signal conversion module, described Display Port signal conversion module will convert VGA signal and voice data to from the signal of Display Port signal input module input, described VGA signal output module is with the VGA signal output of described Display Port signal conversion module output, described sound signal modular converter converts the voice data of described Display Port signal conversion module output to simulated audio signal, described sound signal output module is with the simulated audio signal output of described sound signal modular converter output.
In embodiment, described Display Port signal conversion module comprises that model is the chip of LT8711 therein.
In embodiment, described Display Port signal input module comprises Display Port input interface therein.
In embodiment, described VGA signal output module comprises the VGA output interface therein.
In embodiment, described sound signal output module comprises the sound signal output interface therein.
In embodiment, described control module comprises that model is the chip of STM8S103F therein.
In embodiment, described sound signal modular converter comprises that model is the chip of CS4344 therein.
In embodiment, described Display Port signal converter also is included as the power module that described DisplayPort signal converter provides power supply therein.
In embodiment, described Display Port signal converter also comprises the HDCP memory module that prevents that video content from illegally being recorded therein.
In embodiment, described Display Port signal converter also comprises the extending display identification data memory module of memory monitor information and monitor performance parameter therein.
above-mentioned Display Port signal converter is controlled Display Port signal conversion module by control module will convert VGA signal and voice data to from the signal of Display Port signal input module input, then the voice data of by sound signal modular converter 150, Display Port signal conversion module being exported converts simulated audio signal to, at last by corresponding output interface outputting VGA signal and simulated audio signal, thereby convert Display Port signal to VGA signal and sound signal, when watching video, realization can hear the function of sound.
Description of drawings
Fig. 1 is the high-level schematic functional block diagram of the Display Port signal converter of an embodiment;
Fig. 2 is the Display Port signal conversion module circuit diagram of Display Port signal converter shown in Figure 1;
Fig. 3 is the Display Port signal input module circuit diagram of Display Port signal converter shown in Figure 1;
Fig. 4 is the VGA signal output module circuit diagram of Display Port signal converter shown in Figure 1;
Fig. 5 is the sound signal output module circuit diagram of Display Port signal converter shown in Figure 1;
Fig. 6 is the sound signal modular converter circuit diagram of Display Port signal converter shown in Figure 1;
Fig. 7 is the control module circuit diagram of Display Port signal converter shown in Figure 1;
Fig. 8 is the pull-up resistor of control module of Display Port signal converter shown in Figure 7 and the annexation circuit diagram of control module;
Fig. 9 is the partial circuit diagram of the power module of Display Port signal converter shown in Figure 1;
Figure 10 is the partial circuit diagram of the power module of Display Port signal converter shown in Figure 1;
Figure 11 is the partial circuit diagram of the power module of Display Port signal converter shown in Figure 1;
Figure 12 is the partial circuit diagram of the power module of Display Port signal converter shown in Figure 1;
Figure 13 is the HDCP memory module circuit diagram of Display Port signal converter shown in Figure 1;
Figure 14 is the extending display identification data memory module circuit diagram of Display Port signal converter shown in Figure 1.
Embodiment
Please refer to Fig. 1, an embodiment provides a kind of Display Port signal converter.This Display Port signal converter comprises Display Port signal input module 120, Display Port signal conversion module 110, VGA signal output module 130, control module 140, sound signal modular converter 150 and sound signal output module 160.
Please refer to Fig. 2, the Display Port signal conversion module 110 of this Display Port signal converter comprises that model is the chip U1 of LT8711.This model is chip U1 and annexation other element such as Fig. 2 of LT8711, and its major function is to convert the Display Port signal from 120 inputs of Display Port signal input module to VGA signal and voice data.
Please refer to Fig. 3, the Display Port signal input module 120 of this Display Port signal converter comprises Display Port input interface 121.This Display Port input interface 121 is mainly to be connected with Display Port signal generation device, and so that Display Port signal is sent to Display Port signal conversion module 110, the circuit connecting relation of itself and other element as shown in Figure 4.
Please refer to Fig. 4, the VGA signal output module 130 of this Display Port signal converter comprises VGA output interface 131.This VGA output interface 131 can be exported to display device by this VGA output interface 131 with the VGA signal of Display Port signal conversion module 110 outputs, for example exports to display, so that image is shown.The circuit connecting relation of this VGA output interface 131 and other element as shown in Figure 5.
Please refer to Fig. 5 and Fig. 6, the sound signal modular converter 150 of this Display Port signal converter comprises that model is the chip U10 of CS4344.This model is that the Main Function of the chip U10 of CS4344 is the voice data of Display Port signal conversion module 110 outputs to be converted to the simulated audio signal of suitable output.This model is that the simulated audio signal of the chip U10 output of CS4344 can transfer to sound signal output module 160.This sound signal output module 160 comprises the sound signal output interface, and this sound signal output interface can export simulated audio signal to the acoustics such as earphone, audio amplifier.Sound signal modular converter 150 and sound signal output module 160 and circuit connecting relation other element such as Fig. 6 and shown in Figure 7.
Please refer to Fig. 7 and Fig. 8, the control module 140 of this Display Port signal converter comprises that model is the chip U7 of STM8S103F.This model is that the chip U7 of STM8S103F is connected with Display Port signal conversion module 110, thereby controls the work of Display Port signal conversion module 110.This model is the chip U7 of STM8S103F and circuit connecting relation such as Fig. 7 and shown in Figure 8 of other element.
Please refer to Fig. 1 and Fig. 9 ~ 12, this Display Port signal converter also is included as the power module 170 that this Display Port signal converter provides power supply.This power module 170 can provide essential electric energy for the modules of this Display Port signal converter, so that this Display Port signal converter can work.This power module 170 can provide the power supply of 3.3V and 1.8V.
Please refer to Fig. 1 and 13, this Display Port signal converter also comprises HDCP (HDCP, the High-bandwidth Digital Content Protection) memory module 180 that prevents video content and illegally recorded.When the user carried out bootlegging, this HDCP memory module 180 can be disturbed, and reduces the quality of the image that copies out, thereby content is protected.The annexation of this HDCP memory module 180 and other element as shown in figure 13, it comprises that a model is the chip of 24C04.
Please refer to Fig. 1 and 14, this Display Port signal converter also comprises the extending display identification data memory module 190 of memory monitor information and monitor performance parameter.The annexation of this extending display identification data memory module 190 and other element as shown in figure 14, it comprises that also a model is the chip of 24C04.This extending display identification data memory module 190 stores extending display identification data (EDID, ExtendedDisplay Identification Data).The extending display identification packet contains the parameter of relevant monitor and performance thereof, and it comprises, and supplier information, maximum image size, color setting, manufacturer pre-set, the restriction of frequency range and the character string of display name and sequence number.
This Display Port signal converter is controlled Display Port signal conversion module by control module will convert VGA signal and voice data to from the signal of Display Port signal input module input, then the voice data of by sound signal modular converter 150, Display Port signal conversion module being exported converts simulated audio signal to, at last by corresponding output interface outputting VGA signal and simulated audio signal, thereby convert Display Port signal to VGA signal and sound signal, can hear the function of sound when realizing watching video.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. display interface signals converter, it is characterized in that, comprise Display Port signal input module, Display Port signal conversion module, the VGA signal output module, control module, sound signal modular converter and sound signal output module, described control module is controlled the work of described Display Port signal conversion module, described Display Port signal conversion module will convert VGA signal and voice data to from the signal of Display Port signal input module input, described VGA signal output module is with the VGA signal output of described Display Port signal conversion module output, described sound signal modular converter converts the voice data of described Display Port signal conversion module output to simulated audio signal, described sound signal output module is with the simulated audio signal output of described sound signal modular converter output.
2. display interface signals converter according to claim 1, is characterized in that, described Display Port signal conversion module comprises that model is the chip of LT8711.
3. display interface signals converter according to claim 1, is characterized in that, described Display Port signal input module comprises Display Port input interface.
4. display interface signals converter according to claim 1, is characterized in that, described VGA signal output module comprises the VGA output interface.
5. display interface signals converter according to claim 1, is characterized in that, described sound signal output module comprises the sound signal output interface.
6. display interface signals converter according to claim 1, is characterized in that, described control module comprises that model is the chip of STM8S103F.
7. display interface signals converter according to claim 1, is characterized in that, described sound signal modular converter comprises that model is the chip of CS4344.
8. the described display interface signals converter of arbitrary claim according to claim 1 to 6, is characterized in that, described display interface signals converter also is included as the power module that described display interface signals converter provides power supply.
9. the described display interface signals converter of arbitrary claim according to claim 1 to 6, is characterized in that, described display interface signals converter also comprises the HDCP memory module that prevents that video content from illegally being recorded.
10. the described display interface signals converter of arbitrary claim according to claim 1 to 6, is characterized in that, described display interface signals converter also comprises the extending display identification data memory module of memory monitor information and monitor performance parameter parameter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210486846.1A CN103123781B (en) | 2012-11-26 | 2012-11-26 | Display interface signals converter |
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| CN201210486846.1A CN103123781B (en) | 2012-11-26 | 2012-11-26 | Display interface signals converter |
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| CN103123781B CN103123781B (en) | 2015-12-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464681A (en) * | 2013-09-18 | 2015-03-25 | 瑞昱半导体股份有限公司 | Signal switching circuit, signal switching method, signal receiving circuit and signal receiving method |
| CN106537837A (en) * | 2014-03-31 | 2017-03-22 | 信芯高技电子美国公司 | DP HDCP version converter |
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| CN101047774A (en) * | 2006-03-29 | 2007-10-03 | 株式会社东芝 | Audiovisual (AV) device and control method thereof |
| CN101600041A (en) * | 2008-06-02 | 2009-12-09 | 国民技术股份有限公司 | Can handle the DPF of multiple audio/video input signals |
| US20100091180A1 (en) * | 2008-10-13 | 2010-04-15 | Himax Technologies Limited | Signal conversion apparatuses and display system |
| CN201690089U (en) * | 2010-01-22 | 2010-12-29 | 深圳市东景盛电子技术有限公司 | Vga signal converter |
| CN201716966U (en) * | 2009-12-21 | 2011-01-19 | 康佳集团股份有限公司 | Device for converting displayport into VGA |
| CN203013220U (en) * | 2012-11-26 | 2013-06-19 | 深圳市显盈电子科技有限公司 | Display port signal converter |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101047774A (en) * | 2006-03-29 | 2007-10-03 | 株式会社东芝 | Audiovisual (AV) device and control method thereof |
| CN101600041A (en) * | 2008-06-02 | 2009-12-09 | 国民技术股份有限公司 | Can handle the DPF of multiple audio/video input signals |
| US20100091180A1 (en) * | 2008-10-13 | 2010-04-15 | Himax Technologies Limited | Signal conversion apparatuses and display system |
| CN201716966U (en) * | 2009-12-21 | 2011-01-19 | 康佳集团股份有限公司 | Device for converting displayport into VGA |
| CN201690089U (en) * | 2010-01-22 | 2010-12-29 | 深圳市东景盛电子技术有限公司 | Vga signal converter |
| CN203013220U (en) * | 2012-11-26 | 2013-06-19 | 深圳市显盈电子科技有限公司 | Display port signal converter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464681A (en) * | 2013-09-18 | 2015-03-25 | 瑞昱半导体股份有限公司 | Signal switching circuit, signal switching method, signal receiving circuit and signal receiving method |
| CN106537837A (en) * | 2014-03-31 | 2017-03-22 | 信芯高技电子美国公司 | DP HDCP version converter |
| CN106537837B (en) * | 2014-03-31 | 2019-06-28 | 信芯高技电子美国公司 | DP HDCP translator |
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| CN103123781B (en) | 2015-12-02 |
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Address after: Jincheng Street 518000 Shenzhen Road, Guangdong province Baoan District manhole No. 2070 stone buildings (manhole) Hong Kong Industrial Park B building 3-5 layer Patentee after: Shenzhen Ying Ying Polytron Technologies Inc Address before: The 518000 Guangdong city of Shenzhen province Baoan District Fuyong Tong Mei community road second building third layer Patentee before: FULLINK Technology (Shenzhen) Co.,Ltd. |
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Address after: Room 101, building 7, Jiada Industrial Park, west side of Honghu East Road, Yanchuan community, Yanluo street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: FULLINK TECHNOLOGY Co.,Ltd. Address before: Jincheng Street 518000 Shenzhen Road, Guangdong province Baoan District manhole No. 2070 stone buildings (manhole) Hong Kong Industrial Park B building 3-5 layer Patentee before: FULLINK TECHNOLOGY Co.,Ltd. |
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