CN205792965U - Switching device - Google Patents
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- CN205792965U CN205792965U CN201620501409.6U CN201620501409U CN205792965U CN 205792965 U CN205792965 U CN 205792965U CN 201620501409 U CN201620501409 U CN 201620501409U CN 205792965 U CN205792965 U CN 205792965U
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Abstract
A kind of switching device, it is adaptable to be electrically connected to an audio-visual device.Switching device includes at least one HDMI input port, at least one HDMI output port and a compressing and converting unit.Compressing and converting unit is electrically connected between at least one HDMI input port and at least one HDMI output port；Wherein, compressing and converting unit is in order to be converted to one second speed video-audio signal by one first speed video-audio signal, first speed video-audio signal is the signal of HDMI2.0 specification, second speed video-audio signal is signal or the YPbPr420 format image signal of 4K resolution 60Hz of HDMI 2.0 specification or 50Hz of HDMI 1.4 specification, promotes the ease of use of audio-visual broadcasting and display whereby.
Description
Technical field
This utility model relates to a kind of switching device, especially with regard to the switching device of conversion high-resolution signal.
Background technology
Along with the development of image procossing science and technology, signal of video signal has marched toward the epoch of high image quality.But high image quality image
Signal generally takes up bigger data capacity, therefore when transmitting high image quality signal of video signal, may be limited to former
The problems such as the transmission bandwidth of transmission line, transition specification or different high image quality specification versions, and cannot be carried out
Transmission.It is thus desirable to carry out high image quality image transmission through other modes.
High image quality signal of video signal such as meets the signal of high resolution multimedia interface HDMI 1.4 or 2.0 specification.
Wherein, the peak signal transmission bandwidth of HDMI 1.4 specification is 340MHz, and its maximum TMDS band is a width of
10.2Gbit/s.And the peak signal transmission bandwidth of HDMI 2.0 specification is 600MHz, and its maximum TMDS
Carry a width of 18Gbit/s.Wherein, TMDS is " minimizing differential signal transmission ".
For example, when user is intended to the transmission of high image quality signal of video signal to time long-range, often make through transmission line
For transmission medium, but owing to the data volume of high image quality signal of video signal is huge, if may without image compression
Band-limited transmission line originally cannot be directed through be transmitted；Or existing HDMI 1.4 specification is audio-visual
Stretch system, audio-visual switched system or audio-visual distribution system do not have the ability transmitting higher HDMI specification,
Such as cannot transmit the video-audio signal of HDMI 2.0 specification；Or in audio-visual stretch system, audio-visual switched system
Or the compression method used in audio-visual distribution system/decompressions method generation is inconsistent.Cause the audio-visual broadcasting of use whereby
And the inconvenience of display.
Utility model content
This utility model is to provide a kind of switching device, through compressing and converting unit or decompression converting unit
Design, promote the ease of use of audio-visual broadcasting and display whereby.
The utility model proposes a kind of switching device, it is adaptable to be electrically connected to an audio-visual device.Switching device
Including at least one HDMI input port, at least one HDMI output port and a compressing and converting unit.Pressure
Contracting converting unit is electrically connected between at least one HDMI input port and at least one HDMI output port.
Wherein, compressing and converting unit in order to by one first speed video-audio signal be converted to one second speed video-audio signal, first
Speed video-audio signal is the signal of HDMI 2.0 specification, and the second speed video-audio signal is the signal of HDMI 1.4 specification
Or the YPbPr420 format image signal of 4K resolution 60Hz of HDMI 2.0 specification or 50Hz.Wherein,
Compressing and converting unit includes one first group of HDCP assembly, one second group of HDCP assembly and an image compression group
Part, image compression assembly is electrically connected between first group of HDCP assembly and second group of HDCP assembly, symbol
Close first group of HDCP group of one of them or combination of high definition digital content protection keys 1.4 and 2.2 specification
Part is electrically connected with at least one HDMI input port, meets high definition digital content protection keys 1.4 and 2.2 rule
Second group of HDCP assembly of one of them or combination of model is electrically connected with at least one HDMI output port.
A preferred embodiment according to switching device of the present utility model, also includes a control unit, electricity
Property connect compressing and converting unit, control unit expands display identification data to automatically switch to high picture according to one
The signal of video signal of matter digital content protection key 1.4 or 2.2 specification.
A preferred embodiment according to switching device of the present utility model, also includes a switch unit, electricity
Property connect control unit, switch unit is in order to switch to high definition digital content protection keys 1.4 or 2.2 specification
Signal of video signal.
The utility model proposes a kind of switching device, it is adaptable to be electrically connected to an audio-visual device.Switching device
Converting unit is decompressed including at least one HDMI input port, at least one HDMI output port and one.
Decompress converting unit be electrically connected at least one HDMI input port and at least one HDMI output port it
Between.Wherein, decompress converting unit in order to by one second speed video-audio signal be converted to one first speed video-audio signal,
First speed video-audio signal is the signal of HDMI 2.0 specification, and the second speed video-audio signal is HDMI 1.4 specification
The YPbPr420 format image signal of signal or 4K resolution 60Hz of HDMI 2.0 specification or 50Hz.
Wherein, decompress converting unit and include one first group of HDCP assembly, one second group of HDCP assembly and a shadow
As extractor component, image extractor component is electrically connected at first group of HDCP assembly and second group of HDCP
Between assembly, meet high definition digital content protection keys 1.4 and 2.2 specification one of them or combination the
One group of HDCP assembly is electrically connected with at least one HDMI input port, meets high definition digital content protecting close
Second group of HDCP assembly of one of them or combination of key 1.4 and 2.2 specification is electrically connected with at least one HDMI
Output port.
Specific means of the present utility model is for utilizing a kind of switching device.Wherein, switching device receives audio-visual
The first speed video-audio signal that playback equipment is transmitted, and through compressing and converting unit with by the first speed video-audio signal
Be converted to the second speed video-audio signal.Furthermore, the second switching device receives the second speed video-audio signal, and passes through
Decompress converting unit so that the second speed video-audio signal is converted to the first speed video-audio signal.This utility model is certain
Audio-visual broadcasting and the ease of use of display of switching device can be promoted.
Above general introduction and ensuing embodiment, be all to further illustrate technology hands of the present utility model
Section with reach effect, the embodiment so described with graphic only provide with reference to explanation use, not be used for this reality
With the novel person of being any limitation as.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of the converting system of this utility model one embodiment.
Fig. 2 A is the function block signal of the first switching device of another embodiment of this utility model according to Fig. 1
Figure.
Fig. 2 B is the function block signal of the first switching device of another embodiment of this utility model according to Fig. 1
Figure.
Fig. 3 is the function block signal of the second switching device of another embodiment of this utility model according to Fig. 1
Figure.
Detailed description of the invention
Although should be understood that herein may use term first, second, third, etc. to describe various assembly or
Signal etc., but these assemblies or signal should not limited by these terms.These terms are to distinguish an assembly
With another assembly, or a signal and another signal.It addition, as used herein, term "or" regards
Practical situation potentially includes any one or multiple all combinations of listing in project of being associated.
Fig. 1 is the configuration diagram of the converting system of this utility model one embodiment.Refer to Fig. 1.A kind of turn
Change system 1, including one first switching device C1, an audio-visual device Ex and one second switching device C2.Its
In, audio-visual device Ex is electrically connected between the first switching device C1 and the second switching device C2.Audio-visual
Device Ex for example, stretcher, allotter (Spliter) or switch.Wherein, stretcher includes that transmitting terminal prolongs
Stretch device and receiving terminal stretcher.For convenience of explanation, the audio-visual device Ex of the present embodiment illustrates with stretcher.
The present embodiment is not intended to the embodiment of converting system 1.
In practice, the first switching device C1 for example, compression end transducer.Second switching device C2 is such as
For decompressor end transducer.Compression end transducer in order to by first speed video-audio signal S1 compressing and converting be second speed
Video-audio signal S2.And decompressor end transducer is converted to the first speed in order to be decompressed by the second speed video-audio signal S2
Video-audio signal S1.It is to say, compression end transducer and decompressor end transducer are to belong to the compression/decompression of a pair
Contracting transducer.Wherein, the first speed video-audio signal S1 is the signal of HDMI 2.0 specification.And the second speed is audio-visual
Signal S2 is the signal of HDMI 1.4 specification or 4K resolution 60Hz of HDMI 2.0 specification or 50Hz
YPbPr420 format image signal.Wherein, HDMI 2.0 specification uses 4K resolution 60Hz or 50Hz
YPbPr420 format image signal, it then follows the peak signal transmission bandwidth 340MHz of HDMI 1.4 specification
And design.
For example, the first speed video-audio signal S1 for example, RGB (444)@60frame.And the second speed is audio-visual
Signal S2 has two kinds of kenels, a kind of YPbPr for 2.0 specifications of HDMI (420) or yuv format；
And RGB (444) the@30frame that another kind is 1.4 specifications of HDMI.In practice, HDMI specification
Support all kinds of TV and computer image form, including SDTV, HDTV video pictures, add multichannel
DAB.When transmitting, various video signal datas will be by HDMI transceiving chip " to minimize transmission difference
Signal " (TMDS) technology for encoding becomes data packet.
Additionally, compression end transducer can be according to the expansion display identification of the display device (not illustrating) of rear end
Data (EDID, Extended display identification data), to automatically switch to two kinds of HDCP 1.4
And 2.0 one of them of specification key；Or compression end transducer also can pass through manual switching to realize switching to
One of them of two kinds of HDCP 1.4 and 2.0 specification keys.In other words, the first switching device C1 can root
According to the EDID signal of the display device (not illustrating) of rear end, and use two kinds of HDCP 1.4 and 2.0 specification
One of them of key, to export the signal of YPbPr (420) form or RGB (444)@30frame form
Signal.The present embodiment is not intended to the running embodiment of converting system 1.
In simple terms, audio-visual playback equipment (not illustrating) can transmit the first speed video-audio signal S1 to first conversion
Device C1.The second speed video-audio signal S2, and the second speed video-audio signal is converted to via the first switching device C1
S2 is transmitted between the first switching device C1 and the second switching device C2.Therefore, user can framework first turn
Parallel operation part C1 and the second switching device C2, in existing audio-visual stretch system, audio-visual switched system or audio-visual
In distribution system.Promote the transmission of video-audio signal whereby and use high resolution multimedia interface HDMI 1.4
Or 2.0 convenience of display device (not illustrating) of specification.
It should be noted that in other embodiments, audio-visual device Ex for example, allotter (Spliter) or
Switch.The allotter that allotter is for example, a pair two, the allotter of a pair three or the allotter of one-to-many.
Wherein, art tool usually intellectual can be according to the kenel of allotter to design the second switching device
The quantity of C2.Additionally, when the first switching device C1 receives two or more EDID signals, first
It is higher that the control unit (not illustrating) of switching device C1 may select the HDCP key of relatively low specification, compatibility
HDCP key or corresponding multiple HDCP key, cause first switching device C1 transmit image
Signal is to allotter.Again by allotter by signal of video signal with one-to-two or one point of multimode, transmission to the most multiple the
Two switching devices.
It follows that further illustrate thin parts and the running of first and second switching device C1, C2.
Fig. 2 A is the function block signal of the first switching device of another embodiment of this utility model according to Fig. 1
Figure.Refer to Fig. 2 A.A kind of first switching device C1, it is adaptable to be electrically connected to an audio-visual device Ex.
First switching device C1 include at least one HDMI input port H11, at least one HDMI output port H12,
One compressing and converting unit T1 and control unit FC.
Compressing and converting unit T1 is electrically connected at an at least one HDMI input port H11 and at least HDMI
Between output port H12.Wherein, compressing and converting unit T1 is in order to by one first speed video-audio signal S1 conversion
It is one second speed video-audio signal S2.First speed video-audio signal S1 for example, RGB video signal, and the second speed
Video-audio signal S2 for example, YPbPr signal of video signal or RGB video signal.Specifically, compressing and converting list
Unit T1 includes 10,1 second group of HDCP assembly 12 of one first group of HDCP assembly and an image compression assembly
14.In practice, image compression assembly 14 is electrically connected at first group of HDCP assembly 10 and second group of HDCP
Between assembly 12.First group of HDCP assembly 10 is electrically connected with at least one HDMI input port H11.The
Two groups of HDCP assemblies 12 are electrically connected with at least one HDMI output port H12.
First group of HDCP assembly 10 is its that meet high definition digital content protection keys 1.4 and 2.2 specification
In one or combination.Second group of HDCP assembly 12 is for meeting high definition digital content protection keys 1.4 and 2.2
One of them or combination of specification.In practice, the first speed video-audio signal S1 is via first group of HDCP assembly
After 10 process, the first speed video-audio signal S1 can be divided into an a signal of video signal V1 and acoustical signal A1.Wherein,
Signal of video signal V1 via image compression assembly 14 process after with transmission to second group of HDCP assembly 12.And sound
Tone signal A1 will be directly transferred to second group of HDCP assembly 12.
Additionally, control unit FC is electrically connected with compressing and converting unit T1.In practice, control unit FC example
As realized through the processor of compression end, controller, MCU or microprocessor.Wherein, control unit FC
In order to process signal transmission, calculating or the computing between each assembly of HDMI institute specification, these assemblies.
It should be noted that control unit FC such as includes automatic switch-over circuit, automatic switching program or automatic
Switching firmware.Wherein, control unit FC according to one expand display identification data (i.e. EDID signal) with
Automatically switch to the signal of video signal of high definition digital content protection keys 1.4 or 2.2 specification.In simple terms,
One switching device C1 can be close to automatically switch to above two high definition digital content protecting according to EDID signal
Key 1.4 and 2.2 specification one of them.
Fig. 2 B is the function block signal of the first switching device of another embodiment of this utility model according to Fig. 1
Figure.Refer to Fig. 2 B.Wherein, both first switching device C1a, C1 structure in Fig. 2 B and Fig. 2 A
Similar.And the difference of both first switching device C1a, C1 is: the first switching device C1a further includes one
Switch unit AS.Switch unit AS is electrically connected with control unit FC.
In practice, switch unit AS such as passes through MTS, driving lever, refers to dial device, manual switching
Firmware or manual switching circuit realize.In practice, the first switching device C1a is provided with switch unit
AS, the first switching device C1a also can pass through manual switching to realize switching output YPbPr signal of video signal whereby
Or the running of RGB video signal.
Specifically, switch unit AS is in order to switch to high definition digital content protection keys 2.2 specification
YPbPr signal of video signal, or switch to the RGB image of high definition digital content protection keys 1.4 specification to believe
Number.In practice, switch to the YPbPr of high definition digital content protection keys 2.2 specification in switch unit AS
Signal of video signal, causes the YPbPr of compressing and converting unit T1 output high definition digital content protection keys 2.2 specification
Signal of video signal.
Separately the RGB image of high definition digital content protection keys 1.4 specification is switched to believe in switch unit AS
Number, cause the RGB image letter of compressing and converting unit T1 output high definition digital content protection keys 1.4 specification
Number.In simple terms, the first switching device C1a can manual switching be above two high definition digital content protecting
Key 1.4 and 2.2 specification one of them.Remaining is the most identical, does not repeats them here.
Fig. 3 is the function block signal of the second switching device of another embodiment of this utility model according to Fig. 1
Figure.Refer to Fig. 3.A kind of second switching device C2, it is adaptable to be electrically connected to an audio-visual device Ex, one
Switch or an allotter.Second switching device C2 include at least one HDMI input port H21, at least one
HDMI output port H22, decompression converting unit T2 and control unit SC.
Decompress converting unit T2 and be electrically connected at an at least one HDMI input port H21 and at least HDMI
Between output port H22.Wherein, converting unit T2 is decompressed in order to be turned by one second speed video-audio signal S2
It is changed to one first speed video-audio signal S1.First speed video-audio signal S1 is RGB video signal, and the second speed shadow
Tone signal S2 is YPbPr signal of video signal or RGB video signal.
Furthermore, it is understood that decompress converting unit T2 to include one first group of HDCP assembly 20,1 second group
HDCP assembly 22 and an image extractor component 24.In practice, image extractor component 24 electrically connects
It is connected between first group of HDCP assembly 20 and second group of HDCP assembly 22.First group of HDCP assembly 20
Being electrically connected with at least one HDMI input port H21, second group of HDCP assembly 22 is electrically connected with at least one
HDMI output port H22.
First group of HDCP assembly 20 is its that meet high definition digital content protection keys 1.4 and 2.2 specification
In one or combination, second group of HDCP assembly 22 is for meeting high definition digital content protection keys 1.4 and 2.2
One of them or combination of specification.In practice, the second speed video-audio signal S2 is via first group of HDCP assembly
After 20 process, the second speed video-audio signal S2 can be divided into an a signal of video signal V2 and acoustical signal A2.Wherein,
Signal of video signal V2 via image extractor component 24 process after with transmission to second group of HDCP assembly 22.And
Acoustical signal A2 will be directly transferred to second group of HDCP assembly 22.
Additionally, control unit SC is electrically connected with decompresses converting unit T2.In practice, control unit SC
Such as realize through the processor of decompressor end, controller, MCU or microprocessor.Wherein, list is controlled
Unit SC is in order to process signal transmission, calculating or the computing between each assembly of HDMI institute specification, these assemblies.
In sum, this utility model is a kind of switching device, is arranged at and has stretcher, switch or divide
The audio-visual stretch system of orchestration, audio-visual switched system or audio-visual distribution system.Wherein, the first switching device connects
Receive the first speed video-audio signal that audio-visual playback equipment is transmitted, and the first speed video-audio signal is converted to second
Speed video-audio signal.And second speed video-audio signal be transmitted in existing audio-visual stretch system, audio-visual switched system or shadow
In cent match system.And the second switching device receives the second speed video-audio signal, and by the second speed video-audio signal
Be converted to the first speed video-audio signal.Consequently, it is possible to therefore, user can first and second switching device of framework,
In existing audio-visual stretch system, audio-visual switched system or audio-visual distribution system.Promote video-audio signal whereby
Transmission and use high resolution multimedia interface HDMI 1.4 or 2.0 specification display device (not illustrating)
Convenience.
The foregoing is only embodiment of the present utility model, it also is not used to limit to patent model of the present utility model
Enclose.
Claims (4)
1. a switching device, it is adaptable to be electrically connected to an audio-visual device, it is characterised in that this transducer
Part includes:
At least one HDMI input port and at least one HDMI output port；And
One compressing and converting unit, be electrically connected at described at least one HDMI input port and described at least
Between HDMI output port；
Wherein, described compressing and converting unit is in order to be converted to one second fast audio-visual letter by one first speed video-audio signal
Number, described first speed video-audio signal is the signal of HDMI 2.0 specification, and described second speed video-audio signal is HDMI
The signal of 1.4 specifications or 4K resolution 60Hz of HDMI 2.0 specification or the YPbPr420 form of 50Hz
Signal of video signal；
Wherein, described compressing and converting unit includes one first group of HDCP assembly, one second group of HDCP assembly
And an image compression assembly, described image compression assembly is electrically connected at described first group of HDCP assembly and institute
State between second group of HDCP assembly, meet high definition digital content protection keys 1.4 and 2.2 specification wherein
Described first group of HDCP assembly of one or combination be electrically connected with described at least one HDMI input port, symbol
Close described second group of one of them or combination of high definition digital content protection keys 1.4 and 2.2 specification
At least one HDMI output port described in the electric connection of HDCP assembly.
Switching device the most according to claim 1, it is characterised in that also include a control unit, electricity
Property connect described compressing and converting unit, described control unit according to one expand display identification data automatically to cut
It is changed to the signal of video signal of high definition digital content protection keys 1.4 or 2.2 specification.
Switching device the most according to claim 2, it is characterised in that also include a switch unit, electricity
Property connect described control unit, described switch unit in order to switch to high definition digital content protection keys 1.4 or
The signal of video signal of 2.2 specifications.
4. a switching device, it is adaptable to be electrically connected to an audio-visual device, it is characterised in that described conversion
Device includes:
At least one HDMI input port and at least one HDMI output port；And
One decompress converting unit, be electrically connected at described at least one HDMI input port and described at least
Between HDMI output port；
Wherein, described decompression converting unit is audio-visual in order to one second speed video-audio signal is converted to one first speed
Signal, described first speed video-audio signal is the signal of HDMI 2.0 specification, and described second speed video-audio signal is
The signal of HDMI 1.4 specification or 4K resolution 60Hz of HDMI 2.0 specification or the YPbPr420 of 50Hz
Format image signal；
Wherein, described decompression converting unit includes one first group of HDCP assembly, one second group of HDCP group
Part and an image extractor component, described image extractor component is electrically connected at described first group of HDCP group
Between part and described second group of HDCP assembly, meet high definition digital content protection keys 1.4 and 2.2 specification
Described first group of HDCP assembly of one of them or combination be electrically connected with described at least one HDMI input
Mouthful, meet high definition digital content protection keys 1.4 and 2.2 specification one of them or combination described second
At least one HDMI output port described in group HDCP assembly electric connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501409.6U CN205792965U (en) | 2016-05-27 | 2016-05-27 | Switching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620501409.6U CN205792965U (en) | 2016-05-27 | 2016-05-27 | Switching device |
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| CN205792965U true CN205792965U (en) | 2016-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108924456A (en) * | 2018-08-03 | 2018-11-30 | 中船重工（武汉）凌久电子有限责任公司 | One kind can remote control multiplex roles ultra high-definition video distance transmission system |
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2016
- 2016-05-27 CN CN201620501409.6U patent/CN205792965U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108924456A (en) * | 2018-08-03 | 2018-11-30 | 中船重工（武汉）凌久电子有限责任公司 | One kind can remote control multiplex roles ultra high-definition video distance transmission system |
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