CN210431641U - HDMI audio/video signal conversion system - Google Patents
HDMI audio/video signal conversion system Download PDFInfo
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- CN210431641U CN210431641U CN201922162912.XU CN201922162912U CN210431641U CN 210431641 U CN210431641 U CN 210431641U CN 201922162912 U CN201922162912 U CN 201922162912U CN 210431641 U CN210431641 U CN 210431641U
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Abstract
The HDMI audio and video signal conversion system is high in integration level, simple in structure and complete in function.
Description
Technical Field
The utility model relates to a signal processing technology field, more specifically say, relate to a HDMI audio video signal conversion system.
Background
With the continuous development of science and technology, various manufacturers at home and abroad launch respective display equipment, which covers the aspects of life, and has some display applications in various fields from education, medical treatment, security protection, clothing and eating houses and the like.
Therefore, a technical problem to be solved by those skilled in the art is how to convert an hdmi (high Definition Multimedia interface) audio/video signal at a source end into a signal with multiple formats, so as to be suitable for devices with various specifications and resolutions.
SUMMERY OF THE UTILITY MODEL
In view of this, for solving the above-mentioned problem, the utility model provides a HDMI audio/video signal conversion system, technical scheme is as follows:
an HDMI audio/video signal conversion system, the HDMI audio/video signal conversion system comprising: the HDMI data input module, the HDCP module, the audio processing module, the video processing module, the I2S audio output module, the LVDS conversion module and the LVDS output module;
the HDMI data input module is used for receiving an HDMI audio/video signal of a source end;
the HDCP module is used for protecting the content of the HDMI audio/video signal;
the audio processing module is connected with the HDCP module and is used for processing audio signals;
the I2S audio output module is connected with the audio processing module and is used for outputting an I2S audio signal;
the video processing module is connected with the HDCP module and is used for processing video signals;
the LVDS conversion module is connected with the video processing module and is used for generating LVDS signals;
the LVDS output module is connected with the LVDS conversion module and used for outputting the LVDS signals.
Preferably, in the above HDMI audio/video signal conversion system, the HDMI audio/video signal conversion system further includes: a decoding module;
the decoding module is used for decoding the HDMI audio/video signals and sending the decoded HDMI audio/video signals to the HDCP module.
Preferably, in the above HDMI audio/video signal conversion system, the HDMI audio/video signal conversion system further includes: an unpacking module;
the unpacking module is used for unpacking the audio signals of the audio and video signals protected by the HDCP module and sending the audio signals to the audio processing module.
Preferably, in the above HDMI audio/video signal conversion system, the HDMI audio/video signal conversion system further includes: a color space conversion module;
the color space conversion module is connected with the video processing module and is used for performing color space conversion processing on the video signal.
Preferably, in the above HDMI audio/video signal conversion system, the HDMI audio/video signal conversion system further includes: a color depth dithering module;
the color depth dithering module is connected with the color conversion module and is used for enhancing the color depth of the video signal.
Preferably, in the above HDMI audio/video signal conversion system, the HDMI audio/video signal conversion system further includes: a BT signal conversion module;
the BT signal conversion module is used for converting a video signal into a BT signal.
Preferably, in the above HDMI audio/video signal conversion system, the HDMI audio/video signal conversion system further includes: a video signal detection module;
the video signal detection module is used for detecting a video signal.
Preferably, in the above HDMI audio/video signal conversion system, the HDMI audio/video signal conversion system further includes: an EDID configuration module;
the EDID configuration module is used for acquiring EDID information of equipment so as to correspondingly configure the EDID information of the HDMI audio/video signal of the HDMI data input module receiving source end.
Preferably, in the HDMI audio/video signal conversion system, the HDMI data input module at least includes 4 pairs of differential lines;
the three pairs of differential lines are used for receiving HDMI audio/video signals of a source end;
the other pair of differential lines is for receiving a clock signal.
Preferably, in the HDMI audio/video signal conversion system, the LVDS output module includes at least two output ports;
and each output port comprises 10 paths of differential lines, wherein 8 paths of differential lines are used for outputting LVDS signals, and the other 2 paths of differential lines are used for outputting clock signals.
Compared with the prior art, the utility model discloses the beneficial effect who realizes does:
the HDMI audio/video signal conversion system can convert the HDMI audio/video signals received by the source end into LVDS signals and I2S audio signals, and provides signal sources for the display equipment needing LVDS signals at the rear end, and the HDMI audio/video signals at the source end can be received as long as the HDMI audio/video signals meet the HDMI standard.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a partial structure of an HDMI audio/video signal conversion system provided by an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
LVDS (Low-Voltage Differential Signaling) is a new technology that meets today's high-performance data transmission applications, and can meet the needs of many high-standard applications because it can make the system supply Voltage as Low as 2V. The output interface is adopted, so that signals can be transmitted on a differential PCB (printed circuit board) or a balance cable, and the functions of low noise and low power consumption are realized due to the adoption of a low-voltage and low-current driving mode, so that the LVDS output interface liquid crystal display becomes the choice of most manufacturers.
Based on this, the HDMI audio/video signals received by the source end are converted into LVDS signals and I2S audio signals, so that signal sources are provided for the display equipment of which the rear end needs LVDS signals, and the HDMI audio/video signals of the source end can be selected from multiple options, such as a PC, an audio/video box of each manufacturer, or a signal source conforming to the HDMI standard.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a part of an HDMI audio/video signal conversion system provided by an embodiment of the present invention.
The HDMI audio/video signal conversion system comprises: an HDMI data input module 11, an HDCP (High-definition digital Content Protection) module 12, an audio processing module 13, a video processing module 14, an I2S (Inter-IC Sound, audio bus) audio output module 15, an LVDS conversion module 16, and an LVDS output module 17;
the HDMI data input module 11 is configured to receive an HDMI audio/video signal at a source end;
the HDCP module 12 is configured to protect the content of the HDMI audio/video signal;
the audio processing module 13 is configured to process an audio signal;
the I2S audio output module 15 is connected to the audio processing module 13 for outputting an I2S audio signal;
the video processing module 14 is connected to the HDCP module 12, and is configured to process a video signal;
the LVDS conversion module 16 is configured to convert a video signal into an LVDS signal;
the LVDS output module 17 is connected to the LVDS conversion module 16, and configured to output the LVDS signal.
In this embodiment, the HDMI audio/video signal received by the source terminal is converted into an LVDS signal and an I2S audio signal, so as to provide a signal source for the display device that needs the LVDS signal at the back end, and the HDMI audio/video signal at the source terminal can be selected from multiple options, such as a PC, an audio/video box of each manufacturer, or a signal source conforming to the HDMI standard.
Further, based on the utility model discloses above-mentioned embodiment, as shown in fig. 1, HDMI audio and video signal conversion system still includes: a decoding module 18;
the decoding module 18 is configured to perform a decoding operation on the HDMI audio/video signal, and send the decoded HDMI audio/video signal to the HDCP module 12.
Further, based on the utility model discloses above-mentioned embodiment, as shown in fig. 1, HDMI audio and video signal conversion system still includes: an unpacking module 19;
the unpacking module 19 is configured to perform audio signal unpacking processing on the audio and video signals protected by the HDCP module 12, and send the audio and video signals to the audio processing module 13.
Further, based on the utility model discloses above-mentioned embodiment, as shown in fig. 1, HDMI audio and video signal conversion system still includes: a color space conversion module 20;
the color space conversion module 20 is connected to the video processing module 14, and is configured to perform color space conversion processing on the video signal.
Further, based on the utility model discloses above-mentioned embodiment, as shown in fig. 1, HDMI audio and video signal conversion system still includes: a color depth dithering module 21;
wherein, the color depth dithering module 21 is connected to the color conversion module 20 for enhancing the color depth of the video signal.
Further, based on the utility model discloses above-mentioned embodiment, as shown in fig. 1, HDMI audio and video signal conversion system still includes: a BT signal conversion module 22;
the BT signal converting module 22 is configured to convert a video signal into a BT signal.
Further, based on the utility model discloses above-mentioned embodiment, as shown in fig. 1, HDMI audio and video signal conversion system still includes: a video signal detection module 23;
the video signal detection module 23 is configured to detect a video signal.
Further, based on the utility model discloses above-mentioned embodiment, as shown in fig. 1, HDMI audio and video signal conversion system still includes: an EDID (Extended Display Identification Data) configuration module 24;
the EDID configuration module 24 is configured to collect EDID information of the device, so as to configure the EDID information of the HDMI audio/video signal of the HDMI source correspondingly.
In this embodiment, the HDMI source is enabled to output different resolution signals to meet different requirements by configuring the EDID information.
Further, based on the above embodiments of the present invention, the HDMI data input module at least includes 4 pairs of differential lines;
the three pairs of differential lines are used for receiving HDMI audio/video signals of a source end;
the other pair of differential lines is for receiving a clock signal.
The LVDS output module at least comprises two output ports;
and each output port comprises 10 paths of differential lines, wherein 8 paths of differential lines are used for outputting LVDS signals, and the other 2 paths of differential lines are used for outputting clock signals.
In this embodiment, the LVDS output module may select adjustment of a configuration tracking number of a single port or a dual port to adapt to different application scenarios, may be a TV, a display of various specifications, a projector, a vehicle-mounted entertainment system, and the like, supports a resolution up to 4K × 2K @30, and may meet requirements of most manufacturers.
According to the description, the HDMI audio/video signal conversion system enables the HDMI source to output different resolution signals by configuring the EDID information so as to meet different equipment requirements, not only can decode the HDMI, but also can perform color space conversion, color depth processing and the like on the signals, converts the HDMI audio/video signals into LVDS signals and I2S signals and outputs the LVDS signals and the I2S signals, and is the HDMI audio/video signal conversion system with high integration level, simple structure and complete function.
The HDMI audio/video signal conversion system provided by the present invention is described in detail above, and the specific examples are applied herein to explain the principles and embodiments of the present invention, and the description of the above embodiments is only used to help understanding the method and core ideas of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An HDMI audio/video signal conversion system, the HDMI audio/video signal conversion system comprising: the HDMI data input module, the HDCP module, the audio processing module, the video processing module, the I2S audio output module, the LVDS conversion module and the LVDS output module;
the HDMI data input module is used for receiving an HDMI audio/video signal of a source end;
the HDCP module is used for protecting the content of the HDMI audio/video signal;
the audio processing module is used for processing the audio signal;
the I2S audio output module is connected with the audio processing module and is used for outputting an I2S audio signal;
the video processing module is connected with the HDCP module and is used for processing video signals;
the LVDS conversion module is used for converting the video signal into an LVDS signal;
the LVDS output module is connected with the LVDS conversion module and used for outputting the LVDS signals.
2. The HDMI audio-video signal conversion system of claim 1, wherein said HDMI audio-video signal conversion system further comprises: a decoding module;
the decoding module is used for decoding the HDMI audio/video signals and sending the decoded HDMI audio/video signals to the HDCP module.
3. The HDMI audio-video signal conversion system of claim 1, wherein said HDMI audio-video signal conversion system further comprises: an unpacking module;
the unpacking module is used for unpacking the audio signals of the audio and video signals protected by the HDCP module and sending the audio signals to the audio processing module.
4. The HDMI audio-video signal conversion system of claim 1, wherein said HDMI audio-video signal conversion system further comprises: a color space conversion module;
the color space conversion module is connected with the video processing module and is used for performing color space conversion processing on the video signal.
5. The HDMI audio-video signal conversion system of claim 4, wherein said HDMI audio-video signal conversion system further comprises: a color depth dithering module;
the color depth dithering module is connected with the color conversion module and is used for enhancing the color depth of the video signal.
6. The HDMI audio-video signal conversion system of claim 5, wherein said HDMI audio-video signal conversion system further comprises: a BT signal conversion module;
the BT signal conversion module is used for converting a video signal into a BT signal.
7. The HDMI audio-video signal conversion system of claim 1, wherein said HDMI audio-video signal conversion system further comprises: a video signal detection module;
the video signal detection module is used for detecting a video signal.
8. The HDMI audio-video signal conversion system of claim 1, wherein said HDMI audio-video signal conversion system further comprises: an EDID configuration module;
the EDID configuration module is used for acquiring EDID information of equipment so as to correspondingly configure the EDID information of the HDMI audio/video signal of the HDMI data input module receiving source end.
9. The HDMI audio-video signal conversion system of claim 1, wherein said HDMI data input module comprises at least 4 pairs of differential lines;
the three pairs of differential lines are used for receiving HDMI audio/video signals of a source end;
the other pair of differential lines is for receiving a clock signal.
10. The HDMI audio/video signal conversion system according to claim 1, wherein the LVDS output module comprises at least two output ports;
and each output port comprises 10 paths of differential lines, wherein 8 paths of differential lines are used for outputting LVDS signals, and the other 2 paths of differential lines are used for outputting clock signals.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922162912.XU CN210431641U (en) | 2019-12-05 | 2019-12-05 | HDMI audio/video signal conversion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922162912.XU CN210431641U (en) | 2019-12-05 | 2019-12-05 | HDMI audio/video signal conversion system |
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| CN210431641U true CN210431641U (en) | 2020-04-28 |
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| CN201922162912.XU Active CN210431641U (en) | 2019-12-05 | 2019-12-05 | HDMI audio/video signal conversion system |
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