CN205864588U - Video-audio signal distributor - Google Patents
Video-audio signal distributor Download PDFInfo
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- CN205864588U CN205864588U CN201620651437.6U CN201620651437U CN205864588U CN 205864588 U CN205864588 U CN 205864588U CN 201620651437 U CN201620651437 U CN 201620651437U CN 205864588 U CN205864588 U CN 205864588U
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Abstract
A kind of video-audio signal distributor; wherein; when a control unit determine a video-audio signal belong to one first group of high definition digital content protection keys specification time; control unit controls one first audio-visual delivery unit using first group of high definition digital content protection keys specification as the key of communication, and controls one second audio-visual delivery unit using one second group of high definition digital content protection keys specification as the key of communication.When control unit determine this video-audio signal belong to second group of high definition digital content protection keys specification time; control unit controls the first audio-visual reception unit using second group of high definition digital content protection keys specification as the key of communication, and controls the second audio-visual reception unit using second group of high definition digital content protection keys specification as the key of communication.Reach the PA-system making that only there is high definition digital content protecting 1.4 key specification and can play the purpose of the acoustical signal with high definition digital content protecting 2.2 key specification.
Description
Technical field
This utility model relates to a kind of distributor, and particularly to having high definition digital content protecting (HDCP) key
The video-audio signal distributor of the video-audio signal of specification.
Background technology
For avoiding high-resolution video-audio signal to be stolen or illegally copy in time transmitting, manufacturer develops high definition digital
The key specification of content protecting (HDCP, High-Bandwidth Digital Content Protection), to prevent from not adding
Close video content is sent out.This specification carries out data encryption to prevent data by HDMI Yu DisplayPort interface
It is stolen, and there is a checking flow process to prevent unwarranted device from receiving resolution content.
Wherein, the HDCP key specification being commonly used for video and audio product on the market at present has HDCP 1.4 editions and HDCP 2.2
Version.And have video-audio playing device, display device and the PA-system of 1.4 editions and/or HDCP 2.2 editions specifications of HDCP each other it
Between have a certain degree of incompatible, and thus result in user use on restriction and puzzlement.
Utility model content
The utility model proposes a kind of video-audio signal distributor, it is adaptable to be electrically connected with a multimedia device, a display
Device and a PA-system, video-audio signal distributor has an audio-visual input port, one first audio-visual output port and 1
Two audio-visual output ports, audio-visual input port is electrically connected with multimedia device, and the first audio-visual output port is electrically connected with display dress
Putting, the second audio-visual output port is electrically connected with PA-system, and video-audio signal distributor includes:
One audio-visual reception unit, is electrically connected with audio-visual input port, and audio-visual reception unit has one first group of high image quality number
Word content protecting (HDCP) key specification and one second group of high definition digital content protecting (HDCP) key specification；
One graphics processing unit, is electrically connected with audio-visual reception unit；
One first audio-visual delivery unit, is electrically connected with graphics processing unit and the first audio-visual output port, the first audio-visual biography
Unit is sent to have first group of high definition digital content protecting (HDCP) key specification and second group of high definition digital content protecting
(HDCP) key specification；
One second audio-visual delivery unit, is electrically connected with graphics processing unit and the second audio-visual output port, the second audio-visual biography
Unit is sent to have second group of high definition digital content protecting (HDCP) key specification；And
One control unit, is electrically connected with audio-visual reception unit, the first audio-visual delivery unit and the second audio-visual delivery unit, control
Unit processed is in order to differentiate a video-audio signal, to control the communication checking running between audio-visual reception unit and multimedia device, and
Control the communication checking running between the first audio-visual delivery unit and display device, and control the second audio-visual delivery unit and sound
Ring the communication checking running between device；
Wherein, first group of high definition digital content protecting (HDCP) key rule is belonged to when control unit determines video-audio signal
Fan Shi, control unit control the first audio-visual delivery unit using first group of high definition digital content protecting (HDCP) key specification as
The key of communication, and control the second audio-visual delivery unit using second group of high definition digital content protecting (HDCP) key specification as
The key of communication；
Wherein, second group of high definition digital content protecting (HDCP) key rule is belonged to when control unit determines video-audio signal
Fan Shi, control unit control the first audio-visual reception unit using second group of high definition digital content protecting (HDCP) key specification as
The key of communication, and control the second audio-visual reception unit using second group of high definition digital content protecting (HDCP) key specification as
The key of communication；
Wherein, video-audio signal is exported by graphics processing unit by the first audio-visual delivery unit and the first audio-visual output port
To display device, and video-audio signal is converted to an acoustical signal by graphics processing unit, and by the second audio-visual delivery unit and
Acoustical signal is exported to PA-system by the second audio-visual output port.
Preferably, the most audio-visual input port, the first audio-visual output port and the second audio-visual output port are respectively a height
Image quality multimedia interface, a video signal standard interface, a digital visual interface or an action high image quality link interface.
Preferably, wherein graphics processing unit in order to this video-audio signal is processed and splits into multiple signal.
Preferably, wherein first group of high definition digital content protection keys specification is high definition digital content protecting 2.2
Key specification, second group of high definition digital content protection keys specification is the key specification of high definition digital content protecting 1.4.
Specific means of the present utility model is for utilizing graphics processing unit, the first audio-visual delivery unit and the second audio-visual transmission
The setting of unit, reaches user and can use the sound equipment only with second group of high definition digital content protecting (HDCP) key specification
Device is play has the acoustical signal of first group of high definition digital content protecting (HDCP) key specification, and plays simultaneously and have the
The purpose of the video-audio signal of one group of high definition digital content protecting (HDCP) key specification.
Above general introduction and ensuing embodiment, be all in order to further illustrate technological means of the present utility model with
Reaching effect, the embodiment so described and accompanying drawing only provide with reference to explanation use, are not used for being limited this utility model
System.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of this utility model video-audio signal distributor one embodiment；
Fig. 2 is the function block schematic diagram of this utility model video-audio signal distributor one embodiment.
Detailed description of the invention
Various exemplary embodiment be will be more fully described referring to accompanying drawing below, show that some are exemplary in the accompanying drawings
Embodiment.But, this utility model concept may be embodied in many different forms, and should not be construed as limited by institute herein
The exemplary embodiment illustrated.Specifically, it is provided that these exemplary embodiment make this utility model will for detailed and
Completely, and will fully pass on the category of this utility model concept to those who familiarize themselves with the technology.In all accompanying drawings, similar numeral is all the time
The similar assembly of instruction.
Although should be understood that possible use term first, second, third, etc. are to describe various assembly or signal etc. herein,
But these assemblies or signal should not limited by these terms.These terms are to distinguish an assembly and another assembly, or one
Signal and another signal.It addition, as used herein, term "or" potentially include depending on practical situation be associated list project
In any one or all combinations of many persons.
Refer to Fig. 1, be the schematic diagram of this utility model video-audio signal distributor one embodiment.As it can be seen, shadow
Tone signal distributor 11 has the audio-visual audio-visual output port of input port 116,1 first 117 and an one second audio-visual outfan
Mouth 118.Audio-visual input port 116 is electrically connected with a multimedia device 13, and the first audio-visual output port 117 is electrically connected with a display
Device 15, the second audio-visual output port 118 is electrically connected with a PA-system 17.
The most audio-visual input port the 116, first audio-visual output port 117 and the second audio-visual output port 118 are the most permissible
It is that a high picture quantity multimedia interface (High Definition Multimedia Interface, HDMI), a video signal standard connect
Mouth (DisplayPort), a digital visual interface (Digital Visual Interface, DVI) or an action high image quality are even
Knot interface (Mobile High-Definition Link, MHL).
Wherein multimedia device 13 can be such as a Blu-ray player, DVD player or computer installation, display device
15 can be such as a TV or display, and PA-system 17 can be such as an enlarger or family's theater, but not as
Limit.
When multimedia device 13 is an audio-visual broadcasting dress with high definition digital content protecting (HDCP) 2.2 key specification
Putting, display device 15 is a display with high definition digital content protecting (HDCP) 2.2 key specification, and PA-system 17
When being the sound equipment that has high definition digital content protecting (HDCP) 1.4 key specification.
Multimedia device 13 can play an audio-visual letter belonging to high definition digital content protecting (HDCP) 2.2 key specification
Number, and send video-audio signal distributor 11 to.It is to belong to that video-audio signal distributor 11 can determine the video-audio signal received
Specification in high definition digital content protecting (HDCP) 2.2 key.Now, video-audio signal distributor 11 can be to the shadow received
Tone signal processes, and is exported one belonged to high definition digital content protecting (HDCP) 2.2 by the first audio-visual output port 117
The video-audio signal of key specification plays out to display device 15.Meanwhile, video-audio signal distributor 11 can be audio-visual by second
Output port 118 exports one and belongs to the acoustical signal of high definition digital content protecting (HDCP) 1.4 key specification to PA-system
17 play out.
Thereby through video-audio signal distributor 11 of the present utility model, only have and meet high definition digital content protecting
(HDCP) user of the PA-system of 1.4 key specifications is not required to again purchase and has high definition digital content protecting (HDCP) 2.2
The PA-system of key specification, directly adopts existing PA-system, can reach and protect when broadcasting belongs to high definition digital content
When protecting the video-audio signal of (HDCP) 2.2 key specification, viewing belongs to high definition digital content protecting (HDCP) 2.2 key specification
Signal of video signal, and use the existing PA-system with high definition digital content protecting (HDCP) 1.4 key specification to listen to it
In the purpose of acoustical signal.For purchasing the user of advanced audio device, by video-audio signal of the present utility model
Distributor 11 will can save the sound equipment upgrade cost of writing.
It addition, when multimedia device 13 is one to have the audio-visual of high definition digital content protecting (HDCP) 1.4 key specification
Playing device, display device 15 is a display with high definition digital content protecting (HDCP) 1.4 or 2.2 key specification,
And PA-system 17 is when being the sound equipment that has high definition digital content protecting (HDCP) 1.4 key specification.
Multimedia device 13 then can play an audio-visual letter belonging to high definition digital content protecting (HDCP) 1.4 key specification
Number give video-audio signal distributor 11.Video-audio signal distributor 11 can determine the video-audio signal received and be belonging to high image quality
The specification of digital content protection (HDCP) 1.4 key.Now, the video-audio signal received can be entered by video-audio signal distributor 11
Row processes, and is exported one belonged to high definition digital content protecting (HDCP) 1.4 key specification by the first audio-visual output port 117
Video-audio signal play out to display device 15.Meanwhile, video-audio signal distributor 11 can pass through the second audio-visual output port
The acoustical signal that 118 outputs one belong to high definition digital content protecting (HDCP) 1.4 key specification is broadcast to PA-system 17
Put.
Refer to Fig. 2, be the function block schematic diagram of this utility model video-audio signal distributor one embodiment.Such as figure
Shown in, video-audio signal distributor 11 have audio-visual reception unit 112, graphics processing unit 113 of control unit 111,
The one first audio-visual audio-visual delivery unit of delivery unit 114,1 second 115, the audio-visual output of audio-visual input port 116,1 first
Port 117 and one second audio-visual output port 118.Audio-visual input port 116 is electrically connected with a multimedia device 13, and first is audio-visual
Output port 117 is electrically connected with a display device 15, and the second audio-visual output port 118 is electrically connected with a PA-system 17.
Wherein, audio-visual reception unit 112 is electrically connected with audio-visual input port 116, and audio-visual reception unit 112 has a high picture
Matter digital content protection (HDCP) 2.2 key specification and high definition digital content protecting (HDCP) 1.4 key specification.
It is audio-visual that graphics processing unit 113 is electrically connected with audio-visual reception unit the 112, first audio-visual delivery unit 114 and second
Delivery unit 115.Video-audio signal can be processed and split into multiple signal by graphics processing unit 113.
First audio-visual delivery unit 114 is electrically connected with graphics processing unit 113 and the first audio-visual output port 117, and first
Audio-visual delivery unit 114 has high definition digital content protecting (HDCP) 2.2 key specification and high definition digital content protecting
(HDCP) 1.4 key specification.
Second audio-visual delivery unit 115 is electrically connected with graphics processing unit 113 and the second audio-visual output port 118, and second
Audio-visual delivery unit 115 has high definition digital content protecting (HDCP) 1.4 key specification.
Control unit 111 is electrically connected with audio-visual reception unit the 112, first audio-visual delivery unit 114 and the second audio-visual transmission
Unit 115.Control unit 111 can differentiate the video-audio signal received by audio-visual reception unit 112, and controls audio-visual reception unit
Communication checking running between 112 and multimedia device 13, and control between the first audio-visual delivery unit 114 and display device 15
Communication checking running, and control the communication checking running between the second audio-visual delivery unit 115 and PA-system 17.
Wherein, it is one to there is the audio-visual of high definition digital content protecting (HDCP) 2.2 key specification when multimedia device 13
Playing device, display device 15 is a display with high definition digital content protecting (HDCP) 2.2 key specification, and sound equipment
When device 17 is the sound equipment that has high definition digital content protecting (HDCP) 1.4 key specification.
Multimedia device 13 can play a video-audio signal belonging to high definition digital content protecting (HDCP) 2.2 key specification
To the audio-visual reception unit 112 of video-audio signal distributor 11, control unit 111 can determine audio-visual reception unit 112 and be connect
The video-audio signal received is belonging to the specification of high definition digital content protecting (HDCP) 2.2 key.Now, control unit 111 is controlled
Make the first audio-visual delivery unit 114 using high definition digital content protecting (HDCP) 2.2 key specification as the key of communication, and control
Make the second audio-visual delivery unit 115 using high definition digital content protecting (HDCP) 1.4 key specification as the key of communication.
Now, the video-audio signal received by audio-visual reception unit 112 can be processed and divide by graphics processing unit 113
Stream, is exported one belonged to high definition digital content protecting by the first audio-visual delivery unit 114 and the first audio-visual output port 117
(HDCP) video-audio signal of 2.2 key specifications to display device 15 to play out.And graphics processing unit 113 will receive
Video-audio signal be converted to an acoustical signal, then this acoustical signal is audio-visual defeated by the second audio-visual delivery unit 115 and second
Go out port 118 output belong to the acoustical signal of high definition digital content protecting (HDCP) 1.4 key specification to PA-system 17 with
Play out.Thus reach and see when broadcasting belongs to the video-audio signal of high definition digital content protecting (HDCP) 2.2 key specification
See the signal of video signal belonging to high definition digital content protecting (HDCP) 2.2 key specification, and use only to have and meet high image quality number
The purpose of wherein acoustical signal listened to by the PA-system 17 of word content protecting (HDCP) 1.4 key specification.
It addition, when multimedia device 13 is one to have the audio-visual of high definition digital content protecting (HDCP) 1.4 key specification
Playing device, display device 15 is a display with high definition digital content protecting (HDCP) 1.4 or 2.2 key specification,
And PA-system 17 is when being the sound equipment that has high definition digital content protecting (HDCP) 1.4 key specification.
Multimedia device 13 then can play an audio-visual letter belonging to high definition digital content protecting (HDCP) 1.4 key specification
Number give video-audio signal distributor 11 audio-visual reception unit 112, control unit 111 can determine audio-visual reception unit 112 institute
The video-audio signal received is belonging to the specification of high definition digital content protecting (HDCP) 1.4 key.Now, control unit 111
Control the first audio-visual delivery unit 114 using high definition digital content protecting (HDCP) 1.4 key specification as the key of communication, and
Control the second audio-visual delivery unit 115 using high definition digital content protecting (HDCP) 1.4 key specification as the key of communication.
Now, the video-audio signal received by audio-visual reception unit 112 can be processed and divide by graphics processing unit 113
Stream, is exported one belonged to high definition digital content protecting by the first audio-visual delivery unit 114 and the first audio-visual output port 117
(HDCP) video-audio signal of 1.4 key specifications to display device 15 to play out.And graphics processing unit 113 will receive
Video-audio signal be converted to an acoustical signal, then this acoustical signal is audio-visual defeated by the second audio-visual delivery unit 115 and second
Go out port 118 output belong to the acoustical signal of high definition digital content protecting (HDCP) 1.4 key specification to PA-system 17 with
Play out.
Therefore, by the technology that described exposure book is contained, the video-audio signal distributor that this utility model is proposed passes through
Graphics processing unit, the first audio-visual delivery unit and the second audio-visual delivery unit are set, reach to use only there is high image quality number
The PA-system of word content protecting (HDCP) 1.4 key specification is play has high definition digital content protecting (HDCP) 2.2 key
The acoustical signal of specification, and broadcasting has the video-audio signal of high definition digital content protecting (HDCP) 2.2 key specification simultaneously
Purpose.Allow the user purchasing advanced audio device be not required to carry out the upgrading of PA-system, can play smoothly and there is high image quality
The video-audio signal of digital content protection (HDCP) 2.2 key specification.
The foregoing is only preferable viable solution of the present utility model, all according to this utility model claim institute
Impartial change and the modification done, all should belong to covering scope of the present utility model.
Claims (4)
1. a video-audio signal distributor, it is adaptable to be electrically connected with a multimedia device, a display device and a PA-system,
It is characterized in that, this video-audio signal distributor has an audio-visual input port, one first audio-visual output port and one second shadow
Sound output port, this audio-visual input port is electrically connected with this multimedia device, and this first audio-visual output port is electrically connected with this and shows
Showing device, this second audio-visual output port is electrically connected with this PA-system, and this video-audio signal distributor includes:
One audio-visual reception unit, is electrically connected with this audio-visual input port, and this audio-visual reception unit has one first group of high image quality number
Word content protection keys specification and one second group of high definition digital content protection keys specification；
One graphics processing unit, is electrically connected with this audio-visual reception unit；
One first audio-visual delivery unit, is electrically connected with this graphics processing unit and this first audio-visual output port, and this is first audio-visual
Delivery unit has this first group of high definition digital content protection keys specification and this second group of high definition digital content protecting is close
Key specification；
One second audio-visual delivery unit, is electrically connected with this graphics processing unit and this second audio-visual output port, and this is second audio-visual
Delivery unit has this second group of high definition digital content protection keys specification；And a control unit, it is electrically connected with this and audio-visual connects
Receive unit, this first audio-visual delivery unit and this second audio-visual delivery unit, this control unit in order to differentiate a video-audio signal, with
Control between this audio-visual reception unit and this multimedia device communication checking running, and control this first audio-visual delivery unit with
Communication checking running between this display device, and control the communication between this second audio-visual delivery unit and this PA-system
Checking running；
Wherein, this first group of high definition digital content protection keys specification is belonged to when this control unit determines this video-audio signal
Time, this control unit controls this first audio-visual delivery unit using this first group of high definition digital content protection keys specification as logical
The key of news, and control this second audio-visual delivery unit using this second group of high definition digital content protection keys specification as communication
Key；
Wherein, this second group of high definition digital content protection keys specification is belonged to when this control unit determines this video-audio signal
Time, this control unit controls this first audio-visual reception unit using this second group of high definition digital content protection keys specification as logical
The key of news, and control this second audio-visual reception unit using this second group of high definition digital content protection keys specification as communication
Key；
Wherein, this graphics processing unit by this first audio-visual delivery unit and this first audio-visual output port by this video-audio signal
Output is to this display device, and this video-audio signal is converted to an acoustical signal by this graphics processing unit, and by this second shadow
This acoustical signal is exported to this PA-system by sound delivery unit and this second audio-visual output port.
2. video-audio signal distributor as claimed in claim 1, it is characterised in that this audio-visual input port, this is first audio-visual defeated
Go out port and this second audio-visual output port is respectively a high picture quantity multimedia interface, a video signal standard interface, a digital video
Interface or an action high image quality link interface.
3. video-audio signal distributor as claimed in claim 1, it is characterised in that this graphics processing unit is in order to audio-visual by this
Signal processing also splits into multiple signal.
4. the video-audio signal distributor as described in any claim in claims 1 to 3, it is characterised in that this first group high
Image quality digital content protection key specification is the key specification of high definition digital content protecting 2.2, this second group of high definition digital
Content protection keys specification is the key specification of high definition digital content protecting 1.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620651437.6U CN205864588U (en) | 2016-06-27 | 2016-06-27 | Video-audio signal distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620651437.6U CN205864588U (en) | 2016-06-27 | 2016-06-27 | Video-audio signal distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205864588U true CN205864588U (en) | 2017-01-04 |
Family
ID=57636983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620651437.6U Active CN205864588U (en) | 2016-06-27 | 2016-06-27 | Video-audio signal distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205864588U (en) |
-
2016
- 2016-06-27 CN CN201620651437.6U patent/CN205864588U/en active Active
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