CN203761485U - Fine-definition multimedia signal HDMI receiving device, HDMI source device and multimedia system - Google Patents
Fine-definition multimedia signal HDMI receiving device, HDMI source device and multimedia system Download PDFInfo
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- CN203761485U CN203761485U CN201320858502.9U CN201320858502U CN203761485U CN 203761485 U CN203761485 U CN 203761485U CN 201320858502 U CN201320858502 U CN 201320858502U CN 203761485 U CN203761485 U CN 203761485U
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Abstract
The utility model discloses a fine-definition multimedia signal HDMI receiving device, an HDMI source device and a multimedia system. The receiving device comprises an HDMI signal input interface, an HDMI signal output interface, a processor, a switching control module, and a selector switch. The HDMI signal input interface is connected with the switching control module. The switching control module is connected with the HDMI signal output interface, the processor, and the selector switch. The switching control module is used to send an input HDMI signal to the HDMI signal output interface when the module detects that a level signal output by the selector switch is a first level signal. When the module detects that the level signal output by the selector switch is a second level signal, the switching control module is used to send an input HDMI signal to the processor. The technical scheme can solve problems that an existing HDMI signal switching device can just use a power-off plugging method in a switching process of the HDMI signals, and the method may damage an HDMI signal switching device.
Description
Technical field
The utility model relates to technical field of electronic products, particularly relates to a kind of high-definition multimedia signal receiver, source device and multimedia system.
Background technology
In HDMI interface arrangement, the equipment of output sound video is called to Source equipment (source device), the equipment that receives audio frequency and video is called to Sink equipment (receiving equipment).In the exploitation of the high-end consumption electronic product at some based on HDMI, convenient to use, compatible good, rich interface becomes the target that a lot of products are pursued gradually.Therefore,, in order to improve the compatibility of Sink equipment and other video display apparatus, product development person is switched and has been proposed very high requirement quick, easy, the high-quality of HDMI signal.
The switching mode of the existing HDMI of realization signal is mainly by the mode of " power-off plug ".The major defect of this mode is: connecting-disconnecting interface can increase the chance of introducing static repeatedly, strengthens the risk that Sink equipment is caused to damage.In addition, frequent plug itself is exactly a kind of mechanical damage of docking port.
In sum,, there is the problem that HDMI signal switching apparatus is caused to damage in the mode that existing HDMI signal switching apparatus can only plug by power-off in the process of the switching that HDMI signal is carried out.
Utility model content
The utility model provides a kind of high-definition multimedia signal HDMI receiving equipment, source device and multimedia system, the technical scheme that the utility model provides can solve the mode that existing HDMI signal switching apparatus can only plug by power-off in the process of the switching that HDMI signal is carried out, and has the problem that HDMI signal switching apparatus is caused to damage.
The utility model discloses a kind of high-definition multimedia signal HDMI receiving equipment, this receiving equipment comprises: HDMI signal input interface, HDMI signal output interface, processor, switching controls module and diverter switch;
Described HDMI signal input interface is connected with described switching controls module, and described switching controls module is connected with diverter switch with described HDMI signal output interface, processor respectively;
The level signal that described switching controls module is exported for detection of diverter switch, and in the time that the level signal that described diverter switch output detected is the first level signal, the HDMI signal of input is sent to described HDMI signal output interface; In the time that the level signal that described diverter switch output detected is second electrical level signal, the HDMI signal of input is sent to described processor.
In above-mentioned receiving equipment, described switching controls module comprises: control signal switching submodule and differential signal switching submodule;
Wherein, described diverter switch is connected with described control signal switching submodule and described differential signal switching submodule respectively;
Described control signal switching submodule, for receiving the control signal of described HDMI signal,
Described differential signal switching submodule, for receiving the differential signal of described HDMI signal,
Described differential signal switching submodule and control signal switching submodule detect the level signal of described diverter switch output simultaneously;
In the time that the level signal that described diverter switch output detected is the first level signal, described differential signal switching submodule and described control signal switching submodule send to HDMI signal output interface by differential signal and control signal in described HDMI signal simultaneously;
In the time that the level signal that described diverter switch output detected is second electrical level signal, described differential signal switching submodule and described control signal switching submodule send to processor by differential signal and control signal in described HDMI signal simultaneously.
In above-mentioned receiving equipment, this device further comprises signal equalization module;
Described signal equalization module is connected with described differential signal switching submodule and HDMI signal output interface respectively;
Described signal equalization module, for strengthening the differential signal of described differential signal switching submodule output.
In above-mentioned receiving equipment, it is characterized in that, described control signal switching submodule is the chip that at least can simultaneously switch 4 tunnel control signals.
In above-mentioned receiving equipment, described differential signal switching submodule is the chip that at least can simultaneously switch 8 road differential signals.
The invention also discloses a kind of HDMI source device, this source device comprises: HDMI signal the first output interface, HDMI signal the second output interface, processor, switching controls module and diverter switch;
HDMI signal the first output interface, HDMI signal the second output interface, processor, switching controls module and diverter switch;
Described processor is connected with described switching controls module, and described switching controls module is connected with diverter switch with described HDMI signal the first output interface, HDMI signal the second output interface respectively;
Described switching controls module is for detection of the level signal of diverter switch output, and in the time that the level signal that described diverter switch output detected is three level signal, the HDMI signal that processor is exported sends to described HDMI signal the first output interface; In the time that the level signal that described diverter switch output detected is the 4th level signal, the HDMI signal of processor input is sent to described HDMI signal the second output interface.
In above-mentioned source device, described switching controls module comprises: control signal switching submodule and differential signal switching submodule;
Wherein, described diverter switch is connected with described control signal switching submodule and described differential signal switching submodule respectively;
Described control signal switching submodule, for receiving the control signal of described HDMI signal,
Described differential signal switching submodule, for receiving the differential signal of described HDMI signal,
Described differential signal switching submodule and control signal switching submodule detect the level signal of described diverter switch output simultaneously;
In the time that the level signal that described diverter switch output detected is three level signal, described differential signal switching submodule and described control signal switching submodule send to HDMI signal the first output interface by differential signal and control signal in described HDMI signal simultaneously;
In the time that the level signal that described diverter switch output detected is the 4th level signal, described differential signal switching submodule and described control signal switching submodule send to HDMI signal the second output interface by differential signal and control signal in described HDMI signal simultaneously.
In above-mentioned source device, described control signal switching submodule is the chip that at least can simultaneously switch 4 tunnel control signals.
In above-mentioned source device, described differential signal switching submodule is the chip that at least can simultaneously switch 8 road differential signals.
The invention also discloses a kind of HDMI multimedia system, comprising: the HDMI receiving equipment described in source device and above-mentioned any one;
Or,
HDMI source device described in receiving equipment and above-mentioned middle any one;
Or,
HDMI source device described in HDMI receiving equipment described in above-mentioned middle any one and above-mentioned middle any one.
In sum, the technical scheme that the utility model provides, by stirring diverter switch, exports different level signals.Make in the time that detection is output as the first level signal, by differential signal switching submodule and described control signal switching submodule, differential signal and control signal in described HDMI signal are sent to HDMI signal output interface simultaneously; In the time that the level signal that output detected is second electrical level signal, by differential signal switching submodule and described control signal switching submodule, differential signal and control signal in described HDMI signal are sent to processor simultaneously.Make HDMI receiving equipment that the utility model provides not only there is the ability of processing HDMI signal, can also be in needs, convenient, fast, undistorted HDMI signal is exported.By stirring diverter switch, realize the transmission path that switches rapidly HDMI signal.Avoid repeatedly plugging cable and repeatedly restarting time waste and the equipment damage that HDMI receiving equipment causes.
Brief description of the drawings
Fig. 1 is the structural representation of the HDMI receiving equipment in a kind of embodiment of the utility model;
Fig. 2 is the structural representation of the HDMI receiving equipment in the another kind of embodiment of the utility model;
Fig. 3 is the structural representation of the HDMI receiving equipment in a kind of preferred embodiment of the utility model;
Fig. 4 is the structural representation of the HDMI source device in a kind of embodiment of the utility model;
Fig. 5 is the detailed structure schematic diagram of the HDMI source device in a kind of embodiment of the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model execution mode is described in further detail.
Fig. 1 is the structural representation of the HDMI receiving equipment in a kind of embodiment of the utility model, shown in Figure 1, this HDMI receiving equipment 100 comprises: HDMI signal input interface 101, HDMI signal output interface 102, processor 104, switching controls module 103 and diverter switch 105.
HDMI signal input interface 101 is connected with switching controls module 103, and switching controls module 103 is connected with HDMI signal output interface 102, processor 104 and diverter switch 105 respectively.
The level signal that switching controls module 103 is exported for detection of diverter switch 105, and in the time detecting that level signal that diverter switch 105 is exported is the first level signal, the HDMI signal of input is sent to HDMI signal output interface 102; In the time detecting that level signal that diverter switch 105 is exported is second electrical level signal, the HDMI signal of input is sent to processor 104.
In a kind of embodiment of the present utility model, the first level signal can be high level signal, and second electrical level signal can be low level signal.Or the first level signal can be low level signal, second electrical level signal can be high level signal.
As can be seen here, the ability of processing HDMI signal is not only provided at provided HDMI receiving equipment 100 of the present utility model, can also be in needs, by the undistorted output of HDMI signal of input, realize the transmission path that changes quickly and easily HDMI signal, to meet user's different demands, and then avoid repeatedly plugging cable, repeatedly restarted time waste and the equipment damage that HDMI receiving equipment causes.
Wherein, convenient, fastly refer to that only need to stir diverter switch can realize switching outgoing route.Undistorted referring to directly by the HDMI signal output of input, without any processing.
Fig. 2 is the structural representation of the HDMI receiving equipment in the another kind of embodiment of the utility model, shown in Figure 2.In a kind of preferred embodiment of the present utility model, because HDMI signal is divided into differential signal and control signal, in order better control signal and differential signal to be controlled and to be switched.Switching controls module 103 in HDMI receiving equipment in the present embodiment comprises: control signal switching submodule 202 and differential signal switching submodule 201.Respectively control signal and differential signal are switched by control signal switching submodule 202 and differential signal control submodule 201.Wherein, diverter switch 105 is connected with control signal switching submodule 202 and differential signal switching submodule 201 respectively.
Control signal switching submodule 202 is for receiving the control signal of HDMI signal; Differential signal switching submodule 201 is for receiving the differential signal of HDMI signal.
In the present embodiment, differential signal switching submodule 201 and control signal switching submodule 202 detect the level signal that diverter switch 105 is exported simultaneously.
In the time detecting that level signal that diverter switch 105 is exported is the first level signal, differential signal switching submodule 201 and control signal switching submodule 202 send to HDMI signal output interface 102 by differential signal and control signal in HDMI signal simultaneously.Be specially, the differential signal in the HDMI signal of input is transmitted to HDMI signal output interface 102 by differential signal switching submodule 201, and the control signal in the HDMI signal of input is transmitted to HDMI signal output interface 102 by control signal switching submodule 202.HDMI signal output interface 102 output difference sub-signals and corresponding control signal, be equivalent to output to corresponding HDMI signal.
In the time detecting that level signal that diverter switch 105 is exported is second electrical level signal, differential signal switching submodule 201 and control signal switching submodule 202 send to processor 104 by differential signal and control signal in HDMI signal simultaneously.Be specially, the differential signal in the HDMI signal of input is transmitted to processor 104 by differential signal switching submodule 201, the control signal in the HDMI signal of input is transmitted to processor 104 by control signal switching submodule 202, processor 104 receives differential signal and corresponding control signal, is equivalent to receive corresponding HDMI signal.
In the present embodiment, in the time detecting that level signal that diverter switch 105 is exported is the first level signal, this HDMI signal receiver is directly by the HDMI signal output of input, without the processing of processor 104.In this process, preferably, in the idle situation of processor 104, make processor 104 in resting state, to reduce the consumption to electric energy.
Wherein, control signal switching submodule 202 is at least can switch the chip of 4 tunnel control signals simultaneously.Differential signal switching submodule 201 is at least can switch the chip of 8 road differential signals simultaneously.
In a kind of preferred embodiment of the present utility model, more clear for the signal that HDMI signal output interface 102 is exported, described HDMI receiving equipment also comprises signal equalization module 106.Fig. 3 is the structural representation of the HDMI receiving equipment in a kind of preferred embodiment of the utility model.It is shown in Figure 3,
Signal equalization module 106 is connected with differential signal switching submodule 201 and HDMI signal output interface 102 respectively.Signal equalization module 106 is for strengthening the differential signal of differential signal switching submodule output.
In a kind of specific embodiment of the present utility model, differential signal switching submodule 201 can adopt compatibility to meet the signal of HDMITM1.4b3.0Gbps standard, at least can switch the chip of 8 road differential signals simultaneously.This chip has signal delay and is less than 2ns advantage, and differential signal switching submodule 201 is for example the PI5C3257QEX model chip that Pericom company produces, and is mainly used in the switching of differential signal.
In a kind of specific embodiment of the present utility model, control signal switching submodule 202 can adopt input and output impedance to be less than 5 ohm, at least can realize the chip that 4 road signals switch simultaneously.This chip has advantages of does not almost have signal delay, and control signal switching submodule 202 is for example the PI3HDMI412ADZBEX model chip that Pericom company produces, and is mainly used in the switching of control signal in HDMI signal.
In a kind of specific embodiment of the present utility model, this signal equalization module 106 can adopt compatibility to meet the 3.0Gbps signal of HDMITM1.4b standard, can be by the signal equalization chip of at least 4 pairs of HDMI difference mode gains of software control.This chip has signal delay and is less than 2ns advantage.The MAX3815 chip that signal equalization module 106 can select MAXIN company to produce.
Below the workflow of the HDMI signal receiver shown in Fig. 3 is elaborated:
Differential signal switching submodule 201 realizes the handoff functionality of differential signal in HDMI signal.What control signal switching submodule 202 realized is the handoff functionality of control signal in HDMI signal.
Power at this HDMI signal receiver 300 bring into operation in, differential signal switching submodule 201 and control signal switching submodule 202 detect the state of diverter switch 105 simultaneously.Diverter switch 105 is common bidirectional switchs, in the time that diverter switch 105 pushes one end, output be high level signal, in the time that diverter switch 105 pushes the other end, output be low level signal.
In the time that differential signal switching submodule 201 and control signal switching submodule 202 detect diverter switch output high level signal simultaneously, differential signal switching submodule 201 and control signal switching submodule 202 transfer to processor 104 HDMI signal simultaneously, and now HDMI signal output interface 102 does not have the output of HDMI signal.
In the time that differential signal switching submodule 201 and control signal switching submodule 202 detect the low level signal of diverter switch output simultaneously, differential signal switching submodule 201 and control signal switching submodule 202 transfer to HDMI signal output interface 102 HDMI signal simultaneously, now processor 104 can not receive HDMI signal, and processor 104 can enter low-power consumption park mode.
Wherein, in this equipment, signal equalization module 106 is the controlled signal equalizer of software, and its effect is: can, by software control HDMI signal high gain, strengthen the amplitude output signal of HDMI, ensure the reliability of output.
In sum, the hot-swap that realizes HDMI signal that the commutation circuit that this patent relates to not only can be convenient and simple, can also improve the stability of HDMI output signal; Avoid repeatedly plugging cable, repeatedly restarted time waste and the equipment damage that Sink equipment causes.
Based on identical principle, a kind of HDMI source device is also provided in the utility model, this HDMI source device has two signal output interfaces, can connect two HDMI receiving equipments simultaneously.In the time that a HDMI receiving equipment need to receive HDMI signal, the HDMI signal being produced by processor can be exported to the HDMI receiving equipment being connected with HDMI signal the first output port, stop by the second output port output of HDMI signal simultaneously; In the time that the 2nd HDMI receiving equipment need to receive HDMI signal, the HDMI signal being produced can be exported to the 2nd HDMI receiving equipment being connected with HDMI signal the second output port by processor.
Fig. 4 is the structural representation of the HDMI source device in a kind of embodiment of the utility model; Shown in Figure 4, this HDMI source device 400 comprises: HDMI signal the first output interface 404, HDMI signal the second output interface 405, processor 401, switching controls module 403 and diverter switch 402;
Processor 401 is connected with switching controls module 403, and switching controls module 403 is connected with diverter switch 402 with HDMI signal the first output interface 404, HDMI signal the second output interface 405 respectively;
The level signal that switching controls module 403 is exported for detection of diverter switch 402, in the time detecting that level signal that diverter switch 402 is exported is three level signal, the HDMI signal that processor 401 is exported sends to HDMI signal the first output interface 404.Wherein, HDMI signal the second output interface 405 does not have the output of HDMI signal.And in the time detecting that level signal that diverter switch 402 is exported is the 4th level signal, switching controls module 403 sends to HDMI signal the second output interface 405 for the HDMI signal that processor 401 is exported.Wherein, HDMI signal the first output interface 404 does not have the output of HDMI signal.
In a kind of embodiment of the present utility model, three level signal can be high level signal, and the 4th level signal can be low level signal.Or three level signal can be low level signal, the 4th level signal can be high level signal.
Fig. 5 is the detailed structure schematic diagram of the HDMI source device in a kind of embodiment of the utility model.Shown in Figure 5, the switching controls module in HDMI source device 500 comprises: control signal switching submodule 502 and differential signal switching submodule 501; Diverter switch 402 is connected with control signal switching submodule 501 and differential signal switching submodule 502 respectively.
Control signal switching submodule 502 is for receiving the control signal of HDMI signal, and differential signal switching submodule 501, for receiving the differential signal of HDMI signal.Differential signal switching submodule 501 and control signal switching submodule 502 detect the level signal that diverter switch 402 is exported simultaneously.
In the time detecting that level signal that diverter switch 402 is exported is three level signal, differential signal switching submodule 501 and control signal switching submodule 502 send to differential signal and control signal in HDMI signal HDMI signal the first output interface 404 simultaneously.
In the time detecting that level signal that diverter switch 402 is exported is the 4th level signal, differential signal switching submodule 501 and control signal switching submodule 502 send to differential signal and control signal in HDMI signal HDMI signal the second output interface 405 simultaneously.
In a kind of embodiment of the present utility model, control signal switching submodule 404 is at least can switch the chip of 4 tunnel control signals simultaneously.
In a kind of embodiment of the present utility model, differential signal switching submodule 405 is at least can switch the chip of 8 road differential signals simultaneously.
In a kind of specific embodiment of the present utility model, differential signal switching submodule 404 can adopt compatibility to meet the signal of HDMITM1.4b3.0Gbps standard, at least can switch the chip of 8 road differential signals simultaneously.This chip has signal delay and is less than 2ns advantage.
In a kind of specific embodiment of the present utility model, control signal switching submodule 405 can adopt input and output impedance to be less than 5 ohm, at least can realize the chip that 4 road signals switch simultaneously.This chip has advantages of does not almost have signal delay.
The invention also discloses a kind of HDMI multimedia system, this system comprises: the HDMI receiving equipment in source device and Fig. 1～Fig. 3 described in any one.Wherein, source device in the present embodiment can any one source device.
In a kind of embodiment of the present utility model, the HDMI multimedia system providing comprises: the HDMI source device in receiving equipment and Fig. 4 and Fig. 5 described in any one.Wherein, in the present embodiment, receiving equipment can be any one receiving equipment.
In a kind of embodiment of the present utility model, the HDMI multimedia system providing comprises: the HDMI source device in the HDMI receiving equipment in Fig. 1～Fig. 3 described in any one and Fig. 4 and Fig. 5 described in any one.
In sum, the technical scheme that the utility model provides, by stirring diverter switch, exports different level signals.Make in the time that detection is output as the first level signal, by differential signal switching submodule and described control signal switching submodule, differential signal and control signal in described HDMI signal are sent to HDMI signal output interface simultaneously; In the time that the level signal that output detected is second electrical level signal, by differential signal switching submodule and described control signal switching submodule, differential signal and control signal in described HDMI signal are sent to processor simultaneously.Make HDMI receiving equipment that the utility model provides not only there is the ability of processing HDMI signal, can also be in needs, convenient, fast, undistorted HDMI signal is exported.By stirring diverter switch, realize the transmission path that switches rapidly HDMI signal.Avoid repeatedly plugging cable and repeatedly restarting time waste and the equipment damage that HDMI receiving equipment causes.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection range of the present utility model.All any amendments of doing, be equal to replacement, improvement etc. within spirit of the present utility model and principle, be all included in protection range of the present utility model.
Claims (10)
1. a high-definition multimedia signal receiver, is characterized in that, this receiving equipment comprises: HDMI signal input interface, HDMI signal output interface, processor, switching controls module and diverter switch;
Described HDMI signal input interface is connected with described switching controls module, and described switching controls module is connected with diverter switch with described HDMI signal output interface, processor respectively;
The level signal that described switching controls module is exported for detection of diverter switch, and in the time that the level signal that described diverter switch output detected is the first level signal, the HDMI signal of input is sent to described HDMI signal output interface; In the time that the level signal that described diverter switch output detected is second electrical level signal, the HDMI signal of input is sent to described processor.
2. receiving equipment according to claim 1, is characterized in that, described switching controls module comprises: control signal switching submodule and differential signal switching submodule;
Wherein, described diverter switch is connected with described control signal switching submodule and described differential signal switching submodule respectively;
Described control signal switching submodule, for receiving the control signal of described HDMI signal,
Described differential signal switching submodule, for receiving the differential signal of described HDMI signal,
Described differential signal switching submodule and control signal switching submodule detect the level signal of described diverter switch output simultaneously;
In the time that the level signal that described diverter switch output detected is the first level signal, described differential signal switching submodule and described control signal switching submodule send to HDMI signal output interface by differential signal and control signal in described HDMI signal simultaneously;
In the time that the level signal that described diverter switch output detected is second electrical level signal, described differential signal switching submodule and described control signal switching submodule send to processor by differential signal and control signal in described HDMI signal simultaneously.
3. receiving equipment according to claim 2, is characterized in that, described receiving equipment further comprises signal equalization module;
Described signal equalization module is connected with described differential signal switching submodule and HDMI signal output interface respectively;
Described signal equalization module, for strengthening the differential signal of described differential signal switching submodule output.
4. according to the receiving equipment described in claim 2 or 3, it is characterized in that, described control signal switching submodule is the chip that at least can simultaneously switch 4 tunnel control signals.
5. according to the receiving equipment described in claim 2 or 3, it is characterized in that, described differential signal switching submodule is the chip that at least can simultaneously switch 8 road differential signals.
6. a HDMI source device, is characterized in that, this source device comprises: HDMI signal the first output interface, HDMI signal the second output interface, processor, switching controls module and diverter switch;
Described processor is connected with described switching controls module, and described switching controls module is connected with diverter switch with described HDMI signal the first output interface, HDMI signal the second output interface respectively;
Described switching controls module is for detection of the level signal of diverter switch output, and in the time that the level signal that described diverter switch output detected is three level signal, the HDMI signal that processor is exported sends to described HDMI signal the first output interface; In the time that the level signal that described diverter switch output detected is the 4th level signal, the HDMI signal of processor input is sent to described HDMI signal the second output interface.
7. source device according to claim 6, is characterized in that, described switching controls module comprises: control signal switching submodule and differential signal switching submodule;
Wherein, described diverter switch is connected with described control signal switching submodule and described differential signal switching submodule respectively;
Described control signal switching submodule, for receiving the control signal of described HDMI signal,
Described differential signal switching submodule, for receiving the differential signal of described HDMI signal,
Described differential signal switching submodule and control signal switching submodule detect the level signal of described diverter switch output simultaneously;
In the time that the level signal that described diverter switch output detected is three level signal, described differential signal switching submodule and described control signal switching submodule send to HDMI signal the first output interface by differential signal and control signal in described HDMI signal simultaneously;
In the time that the level signal that described diverter switch output detected is the 4th level signal, described differential signal switching submodule and described control signal switching submodule send to HDMI signal the second output interface by differential signal and control signal in described HDMI signal simultaneously.
8. source device according to claim 7, is characterized in that, described control signal switching submodule is the chip that at least can simultaneously switch 4 tunnel control signals.
9. source device according to claim 7, is characterized in that, described differential signal switching submodule is the chip that at least can simultaneously switch 8 road differential signals.
10. a HDMI multimedia system, is characterized in that, this system comprises:
HDMI receiving equipment in source device and claim 1 to 5 described in any one;
Or,
HDMI source device in receiving equipment and claim 6 to 9 described in any one;
Or,
HDMI source device in HDMI receiving equipment in claim 1 to 5 described in any one and claim 6 to 9 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320858502.9U CN203761485U (en) | 2013-12-24 | 2013-12-24 | Fine-definition multimedia signal HDMI receiving device, HDMI source device and multimedia system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320858502.9U CN203761485U (en) | 2013-12-24 | 2013-12-24 | Fine-definition multimedia signal HDMI receiving device, HDMI source device and multimedia system |
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| CN203761485U true CN203761485U (en) | 2014-08-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333715A (en) * | 2014-11-27 | 2015-02-04 | 天津天地伟业数码科技有限公司 | Switching method for evidence input and local video input |
| CN103763481B (en) * | 2013-12-24 | 2017-09-15 | 青岛歌尔声学科技有限公司 | A kind of high-definition multimedia signal receiver, source device and multimedia system |
-
2013
- 2013-12-24 CN CN201320858502.9U patent/CN203761485U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763481B (en) * | 2013-12-24 | 2017-09-15 | 青岛歌尔声学科技有限公司 | A kind of high-definition multimedia signal receiver, source device and multimedia system |
| CN104333715A (en) * | 2014-11-27 | 2015-02-04 | 天津天地伟业数码科技有限公司 | Switching method for evidence input and local video input |
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