CN203181090U - High-definition multimedia signal conversion apparatus - Google Patents
High-definition multimedia signal conversion apparatus Download PDFInfo
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- CN203181090U CN203181090U CN 201320033498 CN201320033498U CN203181090U CN 203181090 U CN203181090 U CN 203181090U CN 201320033498 CN201320033498 CN 201320033498 CN 201320033498 U CN201320033498 U CN 201320033498U CN 203181090 U CN203181090 U CN 203181090U
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Abstract
A high-definition multimedia signal conversion apparatus is disclosed. A high-definition multimedia signal input module is used for receiving high-definition multimedia signals of a CEA format or a VESA format; a high-definition multimedia signal processing module is used for converting the received high-definition multimedia signals into VGA signals and digital audio signals; the digital audio signals are converted into analog audio signals through a digital-to-analog conversion module; a VGA signal processing module converts the VGA signals into aberration component signals or composite video signals; the aberration component signals are outputted through an aberration component signal output module; and a composite video broadcast signal output module receives the analog audio signals and the composite video signals and outputs composite video broadcast signals. The high-definition multimedia signal conversion apparatus supports high-definition multimedia signal input of the CEA format and the VESA format and simultaneously supports output of the aberration component signals and the composite video broadcast signals, thereby being broadened in application scope.
Description
Technical field
The utility model relates to signal switch technology field, particularly relates to a kind of high-definition multimedia chromacoder.
Background technology
Along with the progress of development of science and technology and society, the more and more higher Qinghua of video, kind is also more and more.CRT(Cathode Ray Tube, cathode ray tube)/LED(Light Emitting Diode, Light-Emitting Diode) display, HD(high definition, the high definition) appearance of display devices such as TV, projecting apparatus and improve and make that also video quality has had large increase.
Because the video format of video source output is different with the video format that display device is supported often, so need connect video source and display device with video converter, video format is changed.Some traditional video converters can only receive CEA(Consumer Electronics Association, consumer electronics association) the HDMI(High Definition Multimedia Interface of form, HDMI (High Definition Multimedia Interface)) signal, output YPbPr(color difference components interface) signal, do not support VESA(Video ElectronicsStandardsAssociation, VESA) the high-definition multimedia signal of form input, do not support CVBS(Composite Video Broadcast Signal, the composite video broadcast singal yet) output.This just requires the user to be equipped with different transducers, brings a lot of troubles to the user, also needs to keep properly various transducers with anti-lost when not using.
The utility model content
Based on this, be necessary to provide a kind of high-definition multimedia signal input of both having supported to import CEA form and VESA form, also support the high-definition multimedia chromacoder of color difference components signal and composite video broadcast singal output.
A kind of high-definition multimedia chromacoder, comprise: the high-definition multimedia signal input module, be used for the receiving high-definition multi-media signal, described high-definition multimedia signal is the high-definition multimedia signal of consumer electronics association form or VESA's form; Signal processing module, comprise high-definition multimedia signal processing module and Video Graphics Array signal processing module, described high-definition multimedia signal processing module is connected with described high-definition multimedia signal input module, is used for converting described high-definition multimedia signal to Video Graphics Array signal and digital audio and video signals; Described Video Graphics Array signal processing module is connected with described high-definition multimedia signal processing module, is used for receiving the Video Graphics Array signal of described high-definition multimedia signal processing module output and converts described Video Graphics Array signal to color difference components signal or composite video signal; D/A converter module is connected with described high-definition multimedia signal processing module, is used for receiving the digital audio and video signals of described high-definition multimedia signal processing module output and converts described digital audio and video signals to simulated audio signal; Signal output module, comprise composite video broadcast singal output module and color difference components signal output module, described composite video broadcast singal output module is connected with the Video Graphics Array signal processing module with described D/A converter module, is used for receiving described simulated audio signal and composite video signal and exporting the composite video broadcast singal; Described color difference components signal output module is connected with described Video Graphics Array signal processing module, is used for the described color difference components signal of output; Control module is connected with the Video Graphics Array signal processing module with described high-definition multimedia signal processing module, is used for the described high-definition multimedia signal processing module of control and Video Graphics Array signal processing module and carries out corresponding signal conversion.
Among embodiment, described high-definition multimedia chromacoder comprises the hot plug detection module therein, and described control module is connected with described high-definition multimedia signal input module by described hot plug detection module.
Among embodiment, described high-definition multimedia chromacoder comprises level shifting circuit therein, and described high-definition multimedia signal input module is connected with described high-definition multimedia signal processing module by described level shifting circuit.
Among embodiment, described high-definition multimedia chromacoder also comprises the electrostatic protection module that is arranged between described high-definition multimedia signal input module and the described high-definition multimedia signal processing module therein.
Among embodiment, described high-definition multimedia chromacoder comprises the HDCP module that connects described high-definition multimedia signal processing module therein.
Among embodiment, described high-definition multimedia signal processing module comprises the LT8511 chip therein.
Among embodiment, described Video Graphics Array signal processing module comprises the MS1802 chip therein.
Among embodiment, described high-definition multimedia chromacoder comprises the magnetic bead that is arranged between described LT8511 chip and the described MS1802 chip therein.
Among embodiment, described control module comprises the STC11L32XE chip therein.
Therein among embodiment, described control module comprises color difference components signal composite video signal diverter switch and the color difference components signal resolution by-pass cock that is connected with described STC11L32XE chip, and described color difference components signal composite video signal diverter switch is used for the described Video Graphics Array signal processing module of control and converts described Video Graphics Array signal to color difference components signal or composite video signal; Described color difference components signal resolution by-pass cock is used for regulating the resolution of described color difference components signal.
Above-mentioned high-definition multimedia chromacoder, the high-definition multimedia signal input module receives the high-definition multimedia signal of CEA form or VESA form, the high-definition multimedia signal converts VGA(Video Graphics Array to by the high-definition multimedia signal processing module, Video Graphics Array) signal and digital audio and video signals, digital audio and video signals converts simulated audio signal to by D/A converter module.The VGA signal processing module converts the VGA signal to color difference components signal or composite video signal, the color difference components signal is by the output of color difference components signal output module, composite video broadcast singal output module receives simulated audio signal and composite video signal and exports the composite video broadcast singal, realized supporting the high-definition multimedia signal input of CEA form and VESA form, also support the output of color difference components signal and composite video broadcast singal simultaneously, increased the scope of application.
Description of drawings
Fig. 1 is the structure chart of high-definition multimedia chromacoder among the embodiment;
Fig. 2 is the schematic diagram of high-definition multimedia signal input module among Fig. 1;
Fig. 3 is the schematic diagram of high-definition multimedia signal processing module among Fig. 1;
Fig. 4 is the schematic diagram of Video Graphics Array signal processing module among Fig. 1;
Fig. 5 a, Fig. 5 b and Fig. 5 c are the partial enlarged drawings of Fig. 4;
Fig. 6 is the schematic diagram of D/A converter module among Fig. 1;
Fig. 7 is the schematic diagram of color difference components signal output module among Fig. 1;
Fig. 8 is the schematic diagram of composite video broadcast singal output module among Fig. 1;
Fig. 9 is the schematic diagram of control module among Fig. 1;
Figure 10 is the schematic diagram of magnetic bead among the embodiment;
Figure 11 is the schematic diagram of color difference components signal composite video signal diverter switch and color difference components signal resolution by-pass cock among the embodiment;
Figure 12 is the structure chart of high-definition multimedia chromacoder among another embodiment;
Figure 13 is the schematic diagram of hot plug detection module among Figure 12;
Figure 14 is the schematic diagram of electrostatic protection module among Figure 12;
Figure 15 is the schematic diagram of level shifting circuit among Figure 12;
Figure 16 is the schematic diagram of HDCP module among Figure 12.
Embodiment
A kind of high-definition multimedia chromacoder, be used for high-definition multimedia (HDMI) signal of video source output is carried out format conversion and exports display to, video source can be player, TV set-top box or computer, and display can be TV, computer monitor or projecting apparatus etc.
As shown in Figure 1, the high-definition multimedia chromacoder comprises high-definition multimedia signal input module 110, signal processing module 120, D/A converter module 130, signal output module 140 and control module 150.
High-definition multimedia signal input module 110 is used for receiving the high-definition multimedia signal of CEA form or VESA form.
D/A converter module 130 is connected with high-definition multimedia signal processing module 122, is used for the digital audio and video signals of receiving high-definition multimedia signal dispose module 122 outputs and converts digital audio and video signals to simulated audio signal.
Above-mentioned high-definition multimedia chromacoder, high-definition multimedia signal input module 110 receives high-definition multimedia (HDMI) signal of CEA form or VESA form, the high-definition multimedia signal converts VGA signal and digital audio and video signals to by high-definition multimedia signal processing module 122, and digital audio and video signals converts simulated audio signal to by D/A converter module 130.Video Graphics Array signal processing module 124 converts the VGA signal to color difference components signal or composite video signal, and the color difference components signal is by 144 outputs of color difference components signal output module; Composite video broadcast singal output module 142 receives simulated audio signal and composite video signal and exports the composite video broadcast singal, realized supporting the high-definition multimedia signal input of CEA form and VESA form, also support the output of color difference components signal and composite video broadcast singal simultaneously, increased the scope of application.
Extremely shown in Figure 9 as Fig. 2, high-definition multimedia signal input module 110 comprises high-definition multimedia signal input interface P1, this interface is HDMI-A Type interface, high-definition multimedia signal processing module 122 comprises that model is the chip U1 of LT8511, Video Graphics Array signal processing module 124 comprises that model is the chip U5 of MS1802, Fig. 5 a, Fig. 5 b and Fig. 5 c are the partial enlarged drawing of Video Graphics Array signal processing module 124 shown in Figure 4, the pin one 74 of Fig. 5 a chips U5, pin one 75 and pin one 76 successively with Fig. 5 b in resistance R 32, resistance R 31, resistance R 30 connects, pin one 72 and pin one 73 are connected with capacitor C 30 among Fig. 5 b, pin one 69 and pin one 70 successively with Fig. 5 b in the AV end be connected with resistance R 29, pin one 64-167 successively with Fig. 5 b in port MD22, MD25, MD23 is connected with MD24, pin one 59-161 successively with Fig. 5 b in port MD27, MD21 is connected with MD26, pin one 52-156 successively with Fig. 5 b in port MD18, MD29, MD19, MD28 is connected with MD20, pin one 41-148 successively with Fig. 5 b in port MA4, MA2, MA3, DQM1, MD16, MD31, MD17 is connected with MD30, crystal oscillator X2 two ends among pin one 37 and the pin one 38 connection layout 5b.Pin 64, pin 74 and the pin 81 of Fig. 5 a chips U5 is connected with capacitor C 41, capacitor C 42 and capacitor C 43 among Fig. 5 c successively.
D/A converter module 130 comprises that model is the chip U3 of CS4344-CZZ, composite video broadcast singal output module 142 comprises composite video broadcast singal output interface P7, color difference components signal output module 144 comprises color difference components signal output interface P3, and composite video broadcast singal output interface P7 and color difference components signal output interface P3 can select the RCA1X3_YPbPr interface in the present embodiment.Control module 150 comprises that model is the chip U7 of STC11L32XE.Chip U1 is connected with high-definition multimedia signal input interface P1, chip U3 all is connected with chip U1 with chip U5, composite video broadcast singal output interface P7 is connected with chip U5 with chip U3, color difference components signal output interface P3 is connected with chip U5, and the connection between above-mentioned each chip realizes by signal transmssion line.The high-definition multimedia signal is through high-definition multimedia signal input interface P1 input and be transported to chip U1, converts VGA signal and digital signal audio frequency to through chip U1, and digital audio and video signals converts simulated audio signal to via chip U3; The VGA signal is converted to composite video signal or color difference components signal by chip U5 after being transported to chip U5, composite video signal is delivered to composite video broadcast singal output interface P7 by the pin one 69 of chip U5, and output composite video broadcast singal was to display after composite video broadcast singal output interface P7 received simulated audio signal and composite video signal; Color difference components signal output interface P3 exports the color difference components signal to display.
As shown in figure 10, between chip U1 and chip U5, can also be provided with magnetic bead FB1, magnetic bead FB2 and magnetic bead FB3, R(RED wherein) end, G(GREEN) end and B(BLUE) end is connected with chip U1 among Fig. 3, and PC_R end, PC_G hold and PC_B holds with chip U5 among Fig. 4 and is connected.The VGA signal of chip U1 output is transported to chip U5 by magnetic bead, and high-frequency noise and spike that magnetic bead can suppress on the signal transmssion line disturb.An embodiment chips U5 also has the function of image multiplication (scalering) therein, is used for that color difference components signal or composite video signal are carried out image and amplifies or dwindle.
As shown in figure 11, control module 150 also comprises color difference components signal composite video signal diverter switch S1 and the color difference components signal resolution by-pass cock S2 that is connected with chip U7, can control the Video Graphics Array signal processing module by color difference components signal composite video signal diverter switch S1 and convert the VGA signal to color difference components signal or composite video signal, select the signal of output needs according to actual conditions.The resolution that color difference components signal resolution by-pass cock S2 can regulate the color difference components signal has two kinds of resolution of 720P and 1080P to select in the present embodiment.
Therein among embodiment; as shown in figure 12, the high-definition multimedia chromacoder can also comprise one or several module in hot plug detection module 160, electrostatic protection module 170, level shifting circuit 180 and the HDCP module 190.Control module 150 is connected with high-definition multimedia signal input module 110 by hot plug detection module 160; electrostatic protection module 170 is arranged between high-definition multimedia signal input module 110 and the high-definition multimedia signal processing module 122; high-definition multimedia signal input module 110 is connected with high-definition multimedia signal processing module 122 by level shifting circuit 180, and HDCP module 190 is connected with high-definition multimedia signal processing module 122.
In addition, the high-definition multimedia chromacoder also comprises supply module, and supply module inserts external power source to each module for power supply in the high-definition multimedia chromacoder.Insert positive 5 volts external power source in the present embodiment, supply module also is provided with fuse, can carry out overcurrent protection to the high-definition multimedia chromacoder.
As shown in figure 13 for the schematic diagram of hot plug detection module, wherein HPD_H_OUT end is connected with chip U7 among Fig. 9, HPD end is connected with high-definition multimedia signal input interface P1 among Fig. 2, and chip U7 is by cooperating realization to the hot plug function of high-definition multimedia signal input interface P1 with the hot plug detection module.
Figure 14 shows that the schematic diagram of electrostatic protection module, the electrostatic protection module comprises chip D1 and the chip D2 that two models are RClamp0524P, by taking the electrostatic defending measure, can make components and parts avoid because of static discharge impaired.
Figure 15 shows that the schematic diagram of level shifting circuit, wherein HDMI_SCL end and HDMI_SDA hold with high-definition multimedia signal input interface P1 among Fig. 2 and are connected, the DDC_SCL end is connected with Fig. 3 chips U1 with DDC_SDA, the MOS(metal oxidesemiconductor metal-oxide semiconductor (MOS) of the resistance R 13 in the circuit, resistance R 17 and correspondence) pipe Q2, metal-oxide-semiconductor Q3 are optional, level shifting circuit is used for external power source is carried out level conversion in the time of welding metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3, and 5V is changed into 3.3V; Be similar to external power source in the time of welding resistance R 13 and resistance R 17 and directly be connected, level is about 4V.
Figure 16 shows that the schematic diagram of HDCP module; the HDCP module comprises that model is the chip U2 of 24C04; wherein EE_SCL end and EE_SDA hold with chip U1 among Fig. 3 and are connected; HDCP(High-bandwidth Digital Content Protection; HDCP) technology can reduce the quality of image that copies out during by bootlegging at image; thereby content is protected, suffered unwarranted copying to prevent the video content with copyright.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. a high-definition multimedia chromacoder is characterized in that, comprising:
The high-definition multimedia signal input module is used for the receiving high-definition multi-media signal, and described high-definition multimedia signal is the high-definition multimedia signal of consumer electronics association form or VESA's form;
Signal processing module, comprise high-definition multimedia signal processing module and Video Graphics Array signal processing module, described high-definition multimedia signal processing module is connected with described high-definition multimedia signal input module, is used for converting described high-definition multimedia signal to Video Graphics Array signal and digital audio and video signals; Described Video Graphics Array signal processing module is connected with described high-definition multimedia signal processing module, is used for receiving the Video Graphics Array signal of described high-definition multimedia signal processing module output and converts described Video Graphics Array signal to color difference components signal or composite video signal;
D/A converter module is connected with described high-definition multimedia signal processing module, is used for receiving the digital audio and video signals of described high-definition multimedia signal processing module output and converts described digital audio and video signals to simulated audio signal;
Signal output module, comprise composite video broadcast singal output module and color difference components signal output module, described composite video broadcast singal output module is connected with the Video Graphics Array signal processing module with described D/A converter module, is used for receiving described simulated audio signal and composite video signal and exporting the composite video broadcast singal; Described color difference components signal output module is connected with described Video Graphics Array signal processing module, is used for the described color difference components signal of output;
Control module is connected with the Video Graphics Array signal processing module with described high-definition multimedia signal processing module, is used for the described high-definition multimedia signal processing module of control and Video Graphics Array signal processing module and carries out corresponding signal conversion.
2. high-definition multimedia chromacoder according to claim 1, it is characterized in that, described high-definition multimedia chromacoder comprises the hot plug detection module, and described control module is connected with described high-definition multimedia signal input module by described hot plug detection module.
3. high-definition multimedia chromacoder according to claim 1, it is characterized in that, described high-definition multimedia chromacoder comprises level shifting circuit, and described high-definition multimedia signal input module is connected with described high-definition multimedia signal processing module by described level shifting circuit.
4. high-definition multimedia chromacoder according to claim 1; it is characterized in that described high-definition multimedia chromacoder comprises the electrostatic protection module that is arranged between described high-definition multimedia signal input module and the described high-definition multimedia signal processing module.
5. high-definition multimedia chromacoder according to claim 1 is characterized in that, described high-definition multimedia chromacoder comprises the HDCP module that connects described high-definition multimedia signal processing module.
6. high-definition multimedia chromacoder according to claim 1 is characterized in that, described high-definition multimedia signal processing module comprises the LT8511 chip.
7. high-definition multimedia chromacoder according to claim 6 is characterized in that, described Video Graphics Array signal processing module comprises the MS1802 chip.
8. high-definition multimedia chromacoder according to claim 7, described high-definition multimedia chromacoder comprises the magnetic bead that is arranged between described LT8511 chip and the MS1802 chip.
9. high-definition multimedia chromacoder according to claim 1 is characterized in that, described control module comprises the STC11L32XE chip.
10. high-definition multimedia chromacoder according to claim 9, it is characterized in that, described control module comprises color difference components signal composite video signal diverter switch and the color difference components signal resolution by-pass cock that is connected with described STC11L32XE chip, and described color difference components signal composite video signal diverter switch is used for the described Video Graphics Array signal processing module of control and converts described Video Graphics Array signal to color difference components signal or composite video signal; Described color difference components signal resolution by-pass cock is used for regulating the resolution of described color difference components signal.
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| CN 201320033498 CN203181090U (en) | 2013-01-22 | 2013-01-22 | High-definition multimedia signal conversion apparatus |
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| CN 201320033498 CN203181090U (en) | 2013-01-22 | 2013-01-22 | High-definition multimedia signal conversion apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539866A (en) * | 2014-12-05 | 2015-04-22 | 中国航空工业集团公司第六三一研究所 | High robustness format fault-tolerant self-adaptive digital video acquisition and processing method |
| CN104869345A (en) * | 2015-05-18 | 2015-08-26 | 广州朗国电子科技有限公司 | Gatherer based on LVDS signals |
| CN107040737A (en) * | 2015-12-23 | 2017-08-11 | 三星电子株式会社 | Display device and its control method |
| CN113965780A (en) * | 2021-11-22 | 2022-01-21 | 深圳市兴龙乐电子有限公司 | Color difference line audio/video converter for GameCube game machine |
| CN114189728A (en) * | 2021-12-13 | 2022-03-15 | 深圳市日声数码科技有限公司 | Playing system for converting digital video and audio input into analog format |
-
2013
- 2013-01-22 CN CN 201320033498 patent/CN203181090U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539866A (en) * | 2014-12-05 | 2015-04-22 | 中国航空工业集团公司第六三一研究所 | High robustness format fault-tolerant self-adaptive digital video acquisition and processing method |
| CN104539866B (en) * | 2014-12-05 | 2017-11-28 | 中国航空工业集团公司第六三一研究所 | A kind of fault-tolerant adaptive digital video acquiring and processing method of the form of high robust |
| CN104869345A (en) * | 2015-05-18 | 2015-08-26 | 广州朗国电子科技有限公司 | Gatherer based on LVDS signals |
| CN107040737A (en) * | 2015-12-23 | 2017-08-11 | 三星电子株式会社 | Display device and its control method |
| CN113965780A (en) * | 2021-11-22 | 2022-01-21 | 深圳市兴龙乐电子有限公司 | Color difference line audio/video converter for GameCube game machine |
| CN114189728A (en) * | 2021-12-13 | 2022-03-15 | 深圳市日声数码科技有限公司 | Playing system for converting digital video and audio input into analog format |
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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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Granted publication date: 20130904 |