CN204465712U - HDMI audio frequency and video switching device shifter - Google Patents

HDMI audio frequency and video switching device shifter Download PDF

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Publication number
CN204465712U
CN204465712U CN201520033476.5U CN201520033476U CN204465712U CN 204465712 U CN204465712 U CN 204465712U CN 201520033476 U CN201520033476 U CN 201520033476U CN 204465712 U CN204465712 U CN 204465712U
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China
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video
signal
hdmi
audio
output interface
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Withdrawn - After Issue
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CN201520033476.5U
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Chinese (zh)
Inventor
艾飞跃
张波
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Shenzhen Suofeixiang Technology Co Ltd
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Shenzhen Suofeixiang Technology Co Ltd
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Abstract

The utility model discloses a kind of HDMI audio frequency and video switching device shifter, comprise at least two HDMI input interfaces, video switcher, HDMI output interface, SPDIF output interface, microcontroller and key-press module; Wherein, audio frequency and video input and at least two HDMI input interfaces of video switcher, the HDMI signal selecting one of at least two HDMI input interfaces to export for responding video switch signal; The video output terminals of video switcher is connected with HDMI output interface, exports described HDMI output interface to for exporting high-definition video signal; First audio output of video switcher is connected with SPDIF output interface, for exporting the first digital audio and video signals to SPDIF output interface; Key-press module at least comprises a switching key, and the first control end of microcontroller is connected with video switcher, and the input of microcontroller is connected with key-press module.Device of the present utility model can realize multichannel HDMI signal switching and export.

Description

HDMI audio frequency and video switching device shifter
Technical field
The utility model relates to audio frequency and video control technology field, particularly relates to a kind of HDMI audio frequency and video switching device shifter.
Background technology
HDMI is HDMI (High Definition Multimedia Interface), and HDMI can provide the data transfer bandwidth up to 5Gbps, can transmit the audio signal without compression and high definition video signal.There is the multiple playing audio/video based on HDMI signal in present family or market, these HDMI signal output apparatus need to be wired to respectively on the display device of compatible high-definition signal, but, the quantity of HDMI signal output apparatus and display device is not necessarily mated, or some display device often will change the program of the different HDMI signal output apparatus of display, and same display device does not have enough HDMI signaling interfaces, multiple stage HDMI signal output apparatus cannot be accessed simultaneously, bring very big inconvenience to use.In view of this, market is needed one badly and can be implemented switching HDMI audio frequency and video switching device shifter to multichannel HDMI signalling channel.
Utility model content
The purpose of this utility model is overcome deficiency of the prior art and provide a kind of HDMI audio frequency and video switching device shifter, and this device can realize multichannel HDMI signal switching and export.
The technical scheme that the utility model solution prior art problem adopts is: a kind of HDMI audio frequency and video switching device shifter, comprises at least two HDMI input interfaces, video switcher, HDMI output interface, SPDIF output interface, microcontroller and key-press module;
Wherein, described at least two HDMI input interfaces are used for the video source different from outside and connect the HDMI signal exported with receiver, video source;
The audio frequency and video input of described video switcher is connected with described at least two HDMI input interfaces, the HDMI signal that one of at least two HDMI input interfaces described in selecting for responding video switch signal export; The video output terminals of described video switcher is connected with described HDMI output interface, for exporting high-definition video signal to described HDMI output interface; First audio output of described video switcher is connected with described SPDIF output interface, for exporting the first digital audio and video signals to described SPDIF output interface;
Described key-press module at least comprises a switching key, first control end of described microcontroller is connected with described video switcher, the input of described microcontroller is connected with described key-press module, for producing described video switch signal according to the first triggering signal of described switching key.
Preferably, also comprise earphone input interface, analog signal turn digital efm signal, analog switching circuit, power amplifier unit and loudspeaker;
Described earphone input interface is for connecting the first outside audio-source to receive the first simulated audio signal, described analog signal turns digital efm signal and is connected with described earphone input interface, for described first simulated audio signal is converted to the second digital audio and video signals;
The second audio output that input and the described analog signal of described analog switching circuit turn digital efm signal and video switcher is connected, to receive the 3rd digital audio and video signals of described second digital audio and video signals and the output of described video switcher second audio output, the output of described analog switching circuit is connected with described power amplifier unit, selects the second digital audio and video signals or the 3rd digital audio and video signals to export described power amplifier unit to for responding the first Audio conversion signal;
Described power amplifier unit is connected with described loudspeaker, is exported after described second digital audio and video signals or the 3rd digital audio and video signals being amplified by described loudspeaker;
Second control end of described microcontroller is connected with described analog switching circuit, produces described first Audio conversion signal for the second triggering signal according to described switching key.
Preferably, also comprise optical fiber Receiver and fiber-optic signal turns digital efm signal, described optical fiber Receiver is for connecting the second outside audio-source to receive fiber-optic signal, described fiber-optic signal turns digital efm signal and is connected with described optical fiber Receiver, for described fiber-optic signal is converted to the 4th digital audio and video signals;
The input of described analog switching circuit also turns digital efm signal with fiber-optic signal and is connected, and selects the 4th digital audio and video signals to export described power amplifier unit to for responding the second Audio conversion signal;
Described microcontroller also produces described second Audio conversion signal for the 3rd triggering signal according to described switching key.
Preferably, also comprise digital signal revolving die analog signal unit and headset output interface, described digital signal revolving die analog signal unit is connected with the output of described analog switching circuit, for described second digital audio and video signals, the 3rd digital audio and video signals conversion or the 4th digital audio and video signals are converted to the second simulated audio signal and are exported by described headset output interface.
Preferably, described power amplifier unit is also connected with supper bass driver, and described supper bass driver is connected with supper bass output interface.
Preferably, described microcontroller is connected with an infrared receiving terminal, for receiving the remote control command of external remote.
Preferably, described SPDIF output interface comprises optical fiber output interface and coaxial output interface.
Preferably, described video switcher adopts SIL9533 chip.
The beneficial effects of the utility model are: the HDMI audio frequency and video switching device shifter that the utility model provides, at least two-way HDMI video source can be connected to same video display apparatus, then be switched by the high-definition video signal that video switcher can realize at least two-way HDMI video source and export.So, can user cost be reduced, improve Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the functional-block diagram of HDMI audio frequency and video switching device shifter in the utility model embodiment.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
With reference to shown in Fig. 1, the utility model embodiment provides a kind of HDMI audio frequency and video switching device shifter, comprises at least two HDMI input interfaces, video switcher 13, HDMI output interface 14, SPDIF output interface, microcontroller 28 and key-press module 29.
Concrete, at least two HDMI input interfaces are used for the video source different from outside and connect the HDMI signal exported with receiver, video source.Such as, in example described in Fig. 1, HDMI input interface is three, one HDMI input interface 10, 2nd HDMI input interface 11 and the 3rd HDMI input interface 12, wherein, the HDMI signal that one HDMI input interface 10 exports to receive the first video source 31 for connecting the first outside video source 31, the 2nd HDMI signal that 2nd HDMI input interface 11 exports for being connected to receive the second video source 32 with the second video source 32 of outside, the 3rd HDMI signal that 3rd HDMI input interface 12 exports for being connected to receive the 3rd video source 33 with the 3rd video source 33 of outside.First video source 31, second video source 32 and the 3rd video source 33 can be to play the playback equipment of HDMI HD video, the first video source 31, second video source 32 and the 3rd video source 33 respectively as three road video inputs to video switcher 13.
The audio frequency and video input of video switcher 13 is connected with at least two HDMI input interfaces, the HDMI signal that one of at least two HDMI input interfaces described in selecting for responding video switch signal export.The video output terminals of video switcher 13 is connected with described HDMI output interface 14, for high-definition video signal being exported to described HDMI output interface 14; First audio output of described video switcher 13 is connected with described SPDIF output interface, for exporting the first digital audio and video signals to described SPDIF output interface.That is, video switcher 13 can select any road HDMI signal access in first, second, third video source 33, and exports HDMI output interface 14 to by by the high-definition video signal selected in HDMI signal.And exported by SPDIF output interface for by the first digital audio and video signals in the HDMI signal selected.
HDMI output interface 14 for connecting outside video display apparatus 34, to be exported to described video display apparatus 34 by a HDMI signal, the 2nd HDMI signal or the 3rd HDMI signal by the HDMII signal selected.That is, a HDMI signal in a HDMI signal, the 2nd HDMI signal or the 3rd HDMI signal can be selected under the control of video switcher 13, and show by the direct output video display device 34 of high-definition video signal in this HDMI signal of selecting.
Be understandable that, SPDIF output interface can comprise optical fiber output interface 16 and coaxial output interface 15, namely both can have been exported by optical fiber and also can export the first digital audio and video signals by coaxial cable.
Key-press module 29 at least comprises a switching key, first control end of microcontroller 28 is connected with described video switcher 13, the input of described microcontroller 28 is connected with described key-press module 29, for producing described video switch signal according to the first triggering signal of described switching key.So, user can carry out the selection switching output of video source by switching key, such as, select the high-definition video signal in the first video source 31 directly to export video display apparatus 34 etc. to by HDMI output interface 14.
Be understandable that, key-press module 29 can also comprise on volume button etc., microcontroller 28 and is also connected with USB interface and communication serial port etc.
According to the HDMI audio frequency and video switching device shifter that the utility model provides, at least two-way HDMI video source can be connected to same video display apparatus 34, then be switched by the high-definition video signal that video switcher 13 can realize at least two-way HDMI video source and export.So, can user cost be reduced, improve Consumer's Experience.
In a preferred embodiment of the present utility model, also comprise earphone input interface 17, analog signal turns digital efm signal 18, analog switching circuit 19, power amplifier unit 20 and loudspeaker 21.
Earphone input interface 17 (such as 3.5mm earphone socket) is for connecting the first outside audio-source 35 to receive the first simulated audio signal, described analog signal turns digital efm signal 18 and is connected with described earphone input interface 17, for described first simulated audio signal is converted to the second digital audio and video signals.
The second audio output that input and the described analog signal of analog switching circuit 19 turn digital efm signal 18 and video switcher 13 is connected, to receive the 3rd digital audio and video signals of described second digital audio and video signals and the output of described video switcher 13 second audio output, the output of described analog switching circuit 19 is connected with described power amplifier unit 20, selects the second digital audio and video signals or the 3rd digital audio and video signals to export described power amplifier unit 20 to for responding the first Audio conversion signal.Power amplifier unit 20 is connected with described loudspeaker 21, is exported after described second digital audio and video signals or the 3rd digital audio and video signals being amplified by described loudspeaker 21.
That is, there is two-way audio to input, namely inputted by earphone input interface 17 and turned the second digital audio and video signals that digital efm signal 18 is changed and the 3rd digital audio and video signals peeled off by video switcher 13 by analog signal.Second digital audio and video signals, the 3rd digital audio and video signals control one of them by analog switching circuit 19 and export power amplifier unit 20 to, then are exported by loudspeaker 21 after carrying out signal amplification by power amplifier unit 20.That is, HDMI audio frequency and video switching device shifter of the present utility model carries power amplifier, is exported after the second digital audio and video signals or the 3rd digital audio and video signals can carry out signal amplification by power amplifier unit 20 by loudspeaker 21.
Second control end of microcontroller 28 is connected with described analog switching circuit 19, produces described first Audio conversion signal for the second triggering signal according to described switching key.So, for Audio conversion output can be carried out by switching key.
In an embodiment of the present utility model, also comprise optical fiber Receiver 26 and fiber-optic signal turns digital efm signal 27, optical fiber Receiver 26 is for connecting the second outside audio-source 36 to receive fiber-optic signal, fiber-optic signal turns digital efm signal 27 and is connected with described optical fiber Receiver 26, for described fiber-optic signal is converted to the 4th digital audio and video signals.
The input of analog switching circuit 19 also turns digital efm signal 27 and is connected with fiber-optic signal, select the 4th digital audio and video signals to export described power amplifier unit 20 to for responding the second Audio conversion signal.That is, optical fiber Receiver 26 is as the 3rd road audio frequency input, first turn digital efm signal 27 by fiber-optic signal and fiber-optic signal is converted to the 4th digital audio and video signals, then the 4th digital audio and video signals is inputed in analog switching circuit 19 as the 3rd road audio frequency.Analog switching circuit 19, under the control of the second Audio conversion signal, can control the 4th digital audio and video signals and export power amplifier unit 20 to, then is exported by loudspeaker 21 after being amplified by power amplifier unit 20 signal.
Microcontroller also produces described second Audio conversion signal for the 3rd triggering signal according to described switching key.
More favorably, power amplifier unit 20 is also connected with supper bass driver 22, and described supper bass driver 22 is connected with supper bass output interface 23.So, by while loudspeaker 21 output audio, there is supper bass effect.
In another embodiment of the present utility model, also comprise digital signal revolving die analog signal unit 24 and headset output interface 25 (such as 3.5mm earphone socket), digital signal revolving die analog signal unit 24 is connected with the output of analog switching circuit 19, for the second digital audio and video signals, the 3rd digital audio and video signals conversion or the 4th digital audio and video signals are converted to the second simulated audio signal and are exported by headset output interface 25.That is, audio frequency exports and comprises SPDIF output and the output of earphone output two-way audio.
In an embodiment of the present utility model, microcontroller 28 is connected with an infrared receiving terminal 30, for receiving the remote control command of external remote, so, can realize the switching that remote controller realizes audio frequency and video.
Be understandable that, video switcher 13 can adopt SIL9533 chip etc.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment when not departing from principle of the present utility model and aim, revising, replacing and modification in scope of the present utility model.

Claims (8)

1. a HDMI audio frequency and video switching device shifter, is characterized in that, comprises at least two HDMI input interfaces, video switcher, HDMI output interface, SPDIF output interface, microcontroller and key-press module;
Wherein, described at least two HDMI input interfaces are used for the video source different from outside and connect the HDMI signal exported with receiver, video source;
The audio frequency and video input of described video switcher is connected with described at least two HDMI input interfaces, the HDMI signal that one of at least two HDMI input interfaces described in selecting for responding video switch signal export; The video output terminals of described video switcher is connected with described HDMI output interface, for exporting high-definition video signal to described HDMI output interface; First audio output of described video switcher is connected with described SPDIF output interface, for exporting the first digital audio and video signals to described SPDIF output interface;
Described key-press module at least comprises a switching key, first control end of described microcontroller is connected with described video switcher, the input of described microcontroller is connected with described key-press module, for producing described video switch signal according to the first triggering signal of described switching key.
2. HDMI audio frequency and video switching device shifter according to claim 1, is characterized in that, also comprise earphone input interface, analog signal turns digital efm signal, analog switching circuit, power amplifier unit and loudspeaker;
Described earphone input interface is for connecting the first outside audio-source to receive the first simulated audio signal, described analog signal turns digital efm signal and is connected with described earphone input interface, for described first simulated audio signal is converted to the second digital audio and video signals;
The second audio output that input and the described analog signal of described analog switching circuit turn digital efm signal and video switcher is connected, to receive the 3rd digital audio and video signals of described second digital audio and video signals and the output of described video switcher second audio output, the output of described analog switching circuit is connected with described power amplifier unit, selects the second digital audio and video signals or the 3rd digital audio and video signals to export described power amplifier unit to for responding the first Audio conversion signal;
Described power amplifier unit is connected with described loudspeaker, is exported after described second digital audio and video signals or the 3rd digital audio and video signals being amplified by described loudspeaker;
Second control end of described microcontroller is connected with described analog switching circuit, produces described first Audio conversion signal for the second triggering signal according to described switching key.
3. HDMI audio frequency and video switching device shifter according to claim 2, it is characterized in that, also comprise optical fiber Receiver and fiber-optic signal turns digital efm signal, described optical fiber Receiver is for connecting the second outside audio-source to receive fiber-optic signal, described fiber-optic signal turns digital efm signal and is connected with described optical fiber Receiver, for described fiber-optic signal is converted to the 4th digital audio and video signals;
The input of described analog switching circuit also turns digital efm signal with fiber-optic signal and is connected, and selects the 4th digital audio and video signals to export described power amplifier unit to for responding the second Audio conversion signal;
Described microcontroller also produces described second Audio conversion signal for the 3rd triggering signal according to described switching key.
4. HDMI audio frequency and video switching device shifter according to claim 3, it is characterized in that, also comprise digital signal revolving die analog signal unit and headset output interface, described digital signal revolving die analog signal unit is connected with the output of described analog switching circuit, for described second digital audio and video signals, the 3rd digital audio and video signals conversion or the 4th digital audio and video signals are converted to the second simulated audio signal and are exported by described headset output interface.
5. HDMI audio frequency and video switching device shifter according to claim 4, it is characterized in that, described power amplifier unit is also connected with supper bass driver, and described supper bass driver is connected with supper bass output interface.
6. HDMI audio frequency and video switching device shifter according to claim 1, it is characterized in that, described microcontroller is connected with an infrared receiving terminal, for receiving the remote control command of external remote.
7. HDMI audio frequency and video switching device shifter according to claim 1, is characterized in that, described SPDIF output interface comprises optical fiber output interface and coaxial output interface.
8. HDMI audio frequency and video switching device shifter according to claim 1, is characterized in that, described video switcher adopts SIL9533 chip.
CN201520033476.5U 2015-01-17 2015-01-17 HDMI audio frequency and video switching device shifter Withdrawn - After Issue CN204465712U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104580935A (en) * 2015-01-17 2015-04-29 深圳市索飞翔科技有限公司 HDMI audio/video switching device
CN110475143A (en) * 2018-05-10 2019-11-19 视联动力信息技术股份有限公司 A kind of switching method and apparatus of HDMI video data

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104580935A (en) * 2015-01-17 2015-04-29 深圳市索飞翔科技有限公司 HDMI audio/video switching device
CN110475143A (en) * 2018-05-10 2019-11-19 视联动力信息技术股份有限公司 A kind of switching method and apparatus of HDMI video data

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