CN103123781B - Display interface signals converter - Google Patents
Display interface signals converter Download PDFInfo
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- CN103123781B CN103123781B CN201210486846.1A CN201210486846A CN103123781B CN 103123781 B CN103123781 B CN 103123781B CN 201210486846 A CN201210486846 A CN 201210486846A CN 103123781 B CN103123781 B CN 103123781B
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Abstract
Do you the invention provides a kind of Display Port signal converter, does it comprise Display Port signal input module, Display Port signal conversion module, VGA signal output module, control module, sound signal modular converter and audio signal output module.Control module control Display the work of Port signal conversion module, Display will Port signal conversion module from Display the signal of Port signal input module input converts VGA signal and voice data to, is VGA signal output module by Display the VGA signal that Port signal conversion module exports exports, is sound signal modular converter by Display the voice data that Port signal conversion module exports converts simulated audio signal to, and the simulated audio signal that sound signal modular converter exports by audio signal output module exports.This Display can Port signal converter by Display Port signal converts VGA signal and sound signal to, can hear the function of sound while realizing viewing video.
Description
Technical field
The present invention relates to a kind of signal converter, particularly relate to a kind of DisplayPort signal converter DisplayPort interface signal out being converted to VGA signal and sound signal.
Background technology
Along with the progress of science and technology and people are to the raising of video invitation, HD video is slowly being popularized.At high sharpness video by when popular, the display interface of high bandwidth is not had to base oneself upon.At present, HDMI relies on and supports that audio frequency and video export, provides the advantages such as the bandwidth that is enough to play 1080p high-definition program, and forward household electrical appliances and pc domain launch fierce attack.But, the new interface DP(DisplayPort that bandwidth is larger, display interface) interface can ensure that large-sized display devices have also been obtained more high-resolution demand from now on develop rapidly because having sufficient bandwidth.
The VGA(VideoGraphicsArray that the signal compatibility spread out of to enable DisplayPort interface is conventional, Video Graphics Array interface) interface, generally DisplayPort signal can be converted to VGA signal.But current market DisplayPort signal converter can only outputting VGA signal, cannot output audio, when causing viewing video, absence of audio exports, and affects viewing effect.
Summary of the invention
Based on this, be necessary to provide a kind of DisplayPort signal converter, it can convert DisplayPort signal to VGA signal and sound signal, can hear the function of sound while realizing viewing video.
A kind of DisplayPort signal converter, it is characterized in that, comprise DisplayPort signal input module, DisplayPort signal conversion module, VGA signal output module, control module, sound signal modular converter and audio signal output module, described control module controls the work of described DisplayPort signal conversion module, described DisplayPort signal conversion module converts the signal inputted from DisplayPort signal input module to VGA signal and voice data, the VGA signal that described DisplayPort signal conversion module exports by described VGA signal output module exports, described sound signal modular converter converts the voice data that described DisplayPort signal conversion module exports to simulated audio signal, the simulated audio signal that described sound signal modular converter exports by described audio signal output module exports.
Wherein in an embodiment, described DisplayPort signal conversion module comprises the chip that model is LT8711.
Wherein in an embodiment, described DisplayPort signal input module comprises DisplayPort input interface.
Wherein in an embodiment, described VGA signal output module comprises VGA output interface.
Wherein in an embodiment, described audio signal output module comprises sound signal output interface.
Wherein in an embodiment, described control module comprises the chip that model is STM8S103F.
Wherein in an embodiment, described sound signal modular converter comprises the chip that model is CS4344.
Wherein in an embodiment, described DisplayPort signal converter also comprises for described DisplayPort signal converter provides the power module of power supply.
Wherein in an embodiment, described DisplayPort signal converter also comprises and prevents video content by the HDCP memory module illegally recorded.
Wherein in an embodiment, described DisplayPort signal converter also comprises the extending display identification data memory module of memory monitor information and monitor performance parameter.
Above-mentioned DisplayPort signal converter converts the signal inputted from DisplayPort signal input module to VGA signal and voice data by control module control DisplayPort signal conversion module, then the voice data that DisplayPort signal conversion module exports is converted to simulated audio signal by sound signal modular converter 150, finally by corresponding output interface outputting VGA signal and simulated audio signal, thus convert DisplayPort signal to VGA signal and sound signal, the function of sound can be heard while realizing viewing video.
Accompanying drawing explanation
Fig. 1 is the high-level schematic functional block diagram of the DisplayPort signal converter of an embodiment;
The DisplayPort signal conversion module circuit diagram that Fig. 2 is the signal converter of DisplayPort shown in Fig. 1;
The DisplayPort signal input module circuit diagram that Fig. 3 is the signal converter of DisplayPort shown in Fig. 1;
The VGA signal output module circuit diagram that Fig. 4 is the signal converter of DisplayPort shown in Fig. 1;
Fig. 5 is the audio signal output module circuit diagram of the signal converter of DisplayPort shown in Fig. 1;
The sound signal modular converter circuit diagram that Fig. 6 is the signal converter of DisplayPort shown in Fig. 1;
Fig. 7 is the control module circuit diagram of the signal converter of DisplayPort shown in Fig. 1;
The pull-up resistor of Fig. 8 for the control module of the signal converter of DisplayPort shown in Fig. 7 and the annexation circuit diagram of control module;
Fig. 9 is the partial circuit diagram of the power module of the signal converter of DisplayPort shown in Fig. 1;
Figure 10 is the partial circuit diagram of the power module of the signal converter of DisplayPort shown in Fig. 1;
Figure 11 is the partial circuit diagram of the power module of the signal converter of DisplayPort shown in Fig. 1;
Figure 12 is the partial circuit diagram of the power module of the signal converter of DisplayPort shown in Fig. 1;
The HDCP memory module circuit diagram that Figure 13 is the signal converter of DisplayPort shown in Fig. 1;
The extending display identification data memory module circuit diagram that Figure 14 is the signal converter of DisplayPort shown in Fig. 1.
Embodiment
Please refer to Fig. 1, an embodiment provides a kind of DisplayPort signal converter.This DisplayPort signal converter comprises DisplayPort signal input module 120, DisplayPort signal conversion module 110, VGA signal output module 130, control module 140, sound signal modular converter 150 and audio signal output module 160.
The work of control module 140 control DisplayPort signal conversion module 110; DisplayPort signal conversion module 110 converts the signal inputted from DisplayPort signal input module 120 to VGA signal and voice data; The VGA signal that DisplayPort signal conversion module 110 exports by VGA signal output module 130 exports; Sound signal modular converter 150 converts the voice data that DisplayPort signal conversion module 110 exports to simulated audio signal; The simulated audio signal that sound signal modular converter 150 exports by audio signal output module 160 exports.This DisplayPort signal converter just achieves the function signal inputted from DisplayPort signal input module 120 being converted to VGA signal and simulated audio signal like this, exports while achieving image and sound.
Please refer to Fig. 2, the DisplayPort signal conversion module 110 of this DisplayPort signal converter comprises the chip U1 that model is LT8711.This model be the chip U1 of LT8711 with the annexation of other element as Fig. 2, its major function converts the DisplayPort signal inputted from DisplayPort signal input module 120 to VGA signal and voice data.
Please refer to Fig. 3, the DisplayPort signal input module 120 of this DisplayPort signal converter comprises DisplayPort input interface 121.This DisplayPort input interface 121 is mainly connected with DisplayPort signal generation device, and so that DisplayPort signal is sent to DisplayPort 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 DisplayPort signal converter comprises VGA output interface 131.The VGA signal that DisplayPort signal conversion module 110 can export by this VGA output interface 131 exports to display device by this VGA output interface 131, such as, export to display, to be shown by image.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 DisplayPort signal converter comprises the chip U10 that model is CS4344.This model is the Main Function of the chip U10 of CS4344 is the voice data that DisplayPort signal conversion module 110 exports is converted to the simulated audio signal being applicable to exporting.This model is that the simulated audio signal that the chip U10 of CS4344 exports can transfer to audio signal output module 160.This audio signal output module 160 comprises sound signal output interface, and this sound signal output interface can export the acoustics such as earphone, audio amplifier to simulated audio signal.Sound signal modular converter 150 and audio signal output module 160 with the circuit connecting relation of other element as shown in Figures 6 and 7.
Please refer to Fig. 7 and Fig. 8, the control module 140 of this DisplayPort signal converter comprises the chip U7 that model is STM8S103F.This model is that the chip U7 of STM8S103F is connected with DisplayPort signal conversion module 110, thus the work of control DisplayPort signal conversion module 110.This model be the circuit connecting relation of the chip U7 of STM8S103F and other element as illustrated in figs. 7 and 8.
Please refer to Fig. 1 and Fig. 9 ~ 12, this DisplayPort signal converter also comprises for this DisplayPort signal converter provides the power module 170 of power supply.This power module 170 can provide required electric energy for the modules of this DisplayPort signal converter, normally works to enable this DisplayPort signal converter.This power module 170 can provide the power supply of 3.3V and 1.8V.
Please refer to Fig. 1 and 13, this DisplayPort signal converter also comprises and prevents video content by HDCP (HDCP, the High-bandwidthDigitalContentProtection) memory module 180 illegally recorded.When user carries out bootlegging, this HDCP memory module 180 can be disturbed, and reduces the quality of the image copying out, thus protects content.As shown in figure 13, it comprises a model is the chip of 24C04 to the annexation of this HDCP memory module 180 and other element.
Please refer to Fig. 1 and 14, this DisplayPort signal converter also comprises the extending display identification data memory module 190 of memory monitor information and monitor performance parameter.As shown in figure 14, it also comprises a model is the chip of 24C04 to the annexation of this extending display identification data memory module 190 and other element.This extending display identification data memory module 190 stores extending display identification data (EDID, ExtendedDisplayIdentificationData).Extending display identification packet is containing the parameter about monitor and performance thereof, and it comprises supplier information, maximum image size, color is arranged, factory default is put, the restriction of frequency range and the character string of display name and sequence number.
This DisplayPort signal converter converts the signal inputted from DisplayPort signal input module to VGA signal and voice data by control module control DisplayPort signal conversion module, then the voice data that DisplayPort signal conversion module exports is converted to simulated audio signal by sound signal modular converter 150, finally by corresponding output interface outputting VGA signal and simulated audio signal, thus convert DisplayPort signal to VGA signal and sound signal, the function of sound can be heard while realizing viewing video.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It 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 (9)
1. a display interface signals converter, it is characterized in that, comprise DisplayPort signal input module, DisplayPort signal conversion module, VGA signal output module, control module, sound signal modular converter and audio signal output module, described control module controls the work of described DisplayPort signal conversion module, described DisplayPort signal conversion module converts the signal inputted from DisplayPort signal input module to VGA signal and voice data, the VGA signal that described DisplayPort signal conversion module exports by described VGA signal output module exports, described sound signal modular converter converts the voice data that described DisplayPort signal conversion module exports to simulated audio signal, the simulated audio signal that described sound signal modular converter exports by described audio signal output module exports, described VGA signal and simulated audio signal export simultaneously, described display interface signals converter also comprises power module, described power module is described DisplayPort signal input module, DisplayPort signal conversion module, VGA signal output module, control module, sound signal modular converter and audio signal output module provide electric energy.
2. display interface signals converter according to claim 1, is characterized in that, described DisplayPort signal conversion module comprises the chip that model is LT8711.
3. display interface signals converter according to claim 1, is characterized in that, described DisplayPort signal input module comprises DisplayPort input interface.
4. display interface signals converter according to claim 1, is characterized in that, described VGA signal output module comprises VGA output interface.
5. display interface signals converter according to claim 1, is characterized in that, described audio signal output module comprises sound signal output interface.
6. display interface signals converter according to claim 1, is characterized in that, described control module comprises the chip that model is STM8S103F.
7. display interface signals converter according to claim 1, is characterized in that, described sound signal modular converter comprises the chip that model is CS4344.
8. the display interface signals converter according to claim arbitrary in claim 1 to 6, is characterized in that, described display interface signals converter also comprises and prevents video content by the HDCP memory module illegally recorded.
9. the display interface signals converter according to claim arbitrary in 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.
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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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| CN103123781A CN103123781A (en) | 2013-05-29 |
| CN103123781B true CN103123781B (en) | 2015-12-02 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104464681B (en) * | 2013-09-18 | 2017-08-15 | 瑞昱半导体股份有限公司 | Signal converting circuit and forwarding method and signal receiving circuit and method of reseptance |
| 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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| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100091180A1 (en) * | 2008-10-13 | 2010-04-15 | Himax Technologies Limited | Signal conversion apparatuses and display system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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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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