CN103680553A - Power supply control circuit, power supply control device and power supply control method for audio interface equipment - Google Patents
Power supply control circuit, power supply control device and power supply control method for audio interface equipment Download PDFInfo
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- CN103680553A CN103680553A CN201310718994.6A CN201310718994A CN103680553A CN 103680553 A CN103680553 A CN 103680553A CN 201310718994 A CN201310718994 A CN 201310718994A CN 103680553 A CN103680553 A CN 103680553A
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Abstract
The embodiment of the invention discloses a power supply control circuit, a power supply control device and a power supply control method for audio interface equipment. The equipment comprises an audio interface, a power supply module and an audio application function module, wherein the audio interface comprises at least one input interface; the power supply control circuit comprises a switching circuit, wherein one end of the switching circuit is connected with the output end of the power supply module and the other end of the switching circuit is connected with the audio application function module, and the switching circuit is used for controlling the switch-on or switch-off between the power supply module and the audio application function module; the control end of the switching circuit is connected with one or more input interfaces in audio interfaces, is used for receiving electrical signals output by one or more input interfaces in the audio interfaces, and is switched on under the control of the electrical signals output by one input interface or the electrical signals output by a plurality of input interfaces at the same time. Compared with the prior art, the power supply control circuit for the audio interface equipment can conveniently control the power supply of the audio interface equipment, and is simple, convenient and quick to operate.
Description
Technical field
The present invention relates to control circuit technical field, particularly relate to a kind of audio interface device power-supplying circuit, device and method.
Background technology
Along with the development of electronic information technology, portable intelligent terminal product (as smart mobile phone and panel computer etc.) universal, the variation of product application, novelty is more and more.For example: present mobile phone is not only sent short messages for making a phone call, it can also be taken pictures, and shooting, listens to the music, and plays games, and surfs the Net etc., has greatly enriched our free life.
Earpiece audio interface on intelligent terminal is not only also for listening to the music at present, it has become general-purpose interface, can be connected with many external units, these external units are connected with intelligent terminal and are combined into a kind of new product application form, as products such as audio frequency card reader, audio frequency card reader, audio remote controller or audio frequency Net silver KEY, for our life brought a lot of convenient.
But due to the restriction of audio interface power supply capacity (after general rectification, peak power output is 8 milliwatts), the applications equipment connecting by audio interface, all need to adopt battery or independently power supply power.And because these external units and intelligent terminal are separate, only when needs external unit, be just connected with intelligent terminal, when externally equipment is not used, do not need to power.
By prior art is studied, applicant finds: current audio interface external unit adopts powered battery more, and according to powered battery control mode, can be divided into two kinds: a kind of is without power supply control scheme, no matter whether use this external unit, system is retainer belt electricity condition all, and this has increased unnecessary kwh loss, has shortened the application cycle of product; Another kind is to adopt mechanical switch to control battery to power, when externally equipment is used, cell switch is opened, and again cell switch is closed when not using, though can improve like this utilization factor of battery, improve the application cycle of product, but complex operation, can bring impact to the convenience of application, in addition, once user forgets and closes cell switch after using audio interface device, can increase unnecessary kwh loss equally, shorten the application cycle of product.
Summary of the invention
A kind of audio interface device power-supplying circuit, device and method in the embodiment of the present invention, are provided, the problem existing to solve audio interface external unit powered battery control mode of the prior art.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses following technical scheme:
An audio interface device, comprising: audio interface, supply module, power-supplying circuit and voice applications functional module, wherein:
Described audio interface comprises at least one input interface, and described voice applications functional module is connected with described audio interface;
Described power-supplying circuit comprises: on-off circuit,
One end of described on-off circuit is connected with the output terminal of described supply module, and the other end of described on-off circuit is connected with described voice applications functional module, for controlling conducting or shutoff between described supply module and described voice applications functional module;
The control end of described on-off circuit is connected with one or more described input interfaces in described audio interface, for receiving the electric signal of the one or more described input interface output of described audio interface, and be subject to the described electric signal of a described input interface output or be subject to the control of the described electric signal of a plurality of described input interface outputs to carry out conducting simultaneously.
Preferably, described power-supplying circuit also comprises: ON-OFF control circuit;
The input end of described ON-OFF control circuit is connected with one or more described sound channel input interfaces in described audio interface, the output terminal of described ON-OFF control circuit is connected with the control end of described on-off circuit, for receiving the electric signal of described audio interface input, and to the controlled signal of described Electric signal processing;
Described control signal is used for controlling described on-off circuit and carries out conducting.
Preferably, described ON-OFF control circuit comprises: stepup transformer, rectifier, wave filter and voltage stabilizer, wherein,
The input end of described stepup transformer is connected with one or more described input interfaces in described audio interface, for the voltage of the electric signal of described audio interface input is raise;
The input end of described rectifier is connected with the output terminal of described stepup transformer, for the described electric signal after voltage is raise, by AC signal, is transformed to direct current signal;
The input end of described wave filter is connected with the output terminal of described rectifier, for the described electric signal to after rectification, carries out filtering;
The input end of described voltage stabilizer is connected with the output terminal of described wave filter, for filtered described electric signal is carried out to voltage stabilizing processing, obtain voltage stabilization and for controlling the control signal of described on-off circuit conducting;
The output terminal of described voltage stabilizer is connected with the control end of described on-off circuit.
Preferably, described input interface comprises: one or two in L channel input interface and R channel input interface.
Preferably, described control circuit also comprises: delay circuit;
The input end of described delay circuit is connected with one or more described sound channel input interfaces in described audio interface, output terminal is connected with the input end of described ON-OFF control circuit or the control end of described on-off circuit is connected, for when receiving the electric signal of the one or more described sound channel input interface inputs of described audio interface, conducting after delay Preset Time.
Preferably, described power-supplying circuit also comprises: power light;
Described power light is connected between described supply module and described on-off circuit, or, be connected between described on-off circuit and described voice applications functional module, for carry out luminous indication after described on-off circuit conducting.
Preferably, described ON-OFF control circuit and described on-off circuit are integrated chip.
An audio interface device, comprising: audio interface, supply module, voice applications functional module and audio interface device power-supplying circuit as above;
Described voice applications functional module is connected with described audio interface.
A kind of audio interface device method for controlling power supply, described audio interface device comprises: audio interface, supply module, power-supplying circuit and voice applications functional module, wherein, described audio interface comprises at least one input interface, described power-supplying circuit comprises: on-off circuit, described on-off circuit is connected between described supply module and described voice applications functional module, and the control end of described on-off circuit is connected with an input interface or a plurality of input interface in described audio interface
Described method comprises:
The electric signal of a reception input interface or a plurality of input interface input from described audio interface;
Utilize described electric signal to control described on-off circuit conducting, so that described supply module is powered to described voice applications functional module.
Preferably, described method also comprises:
To the processing of boosting of described electric signal;
Described electric signal after voltage is raise is transformed to direct current signal by AC signal;
Described electric signal after rectification is carried out to filtering;
Filtered described electric signal is carried out to voltage stabilizing processing, obtain voltage stabilization and for the control signal of gauge tap circuit turn-on.
From above scheme, this audio interface device power-supplying circuit that the embodiment of the present application provides, be arranged on the on-off circuit between supply module and voice applications functional module, be subject to the control of the some output interfaces in audio interface, or, when being subject to a plurality of output interface in audio interface, control, can be by conducting between supply module and voice applications functional module.Like this, when audio interface device is connected by audio interface with intelligent terminal, audio interface device can power on automatically, and when the audio interface between audio interface device and intelligent terminal disconnects, this audio interface device can auto-breaking.
Compared with prior art, this audio interface device power-supplying circuit can be controlled the power supply of audio interface device easily, simple to operation quick.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The use scenes schematic diagram of the audio interface device power-supplying circuit that Fig. 1 provides for the embodiment of the present application;
The structural representation of the audio interface device power-supplying circuit that Fig. 2 provides for embodiment of the application;
The structural representation of the audio interface device power-supplying circuit that Fig. 3 provides for another embodiment of the application;
The structural representation of the audio interface device power-supplying circuit that Fig. 4 provides for the another embodiment of the application;
The structural representation of the audio interface device power-supplying circuit that Fig. 5 provides for the another embodiment of the application;
The schematic flow sheet of a kind of audio interface device method for controlling power supply that Fig. 6 provides for the application;
The schematic flow sheet of the another kind of audio interface device method for controlling power supply that Fig. 7 provides for the application.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, should belong to the scope of protection of the invention.
The use schematic diagram of the audio interface device that Fig. 1 provides for the embodiment of the present application.
As shown in Figure 1, in figure, 100 is audio interface device, and 200 is intelligent terminal, on audio interface device 100 and intelligent terminal 200, is all provided with the audio interface matching, and both are connected by audio interface.
In the embodiment of the present application, as shown in Figure 1, intelligent terminal 200 can mobile phone, the audio interface arranging on intelligent terminal 200 can exist with the form of earphone jack 201, audio interface in audio interface device 100 can exist with the form of headset plug 101, audio interface device 100, when being connected with intelligent terminal 200, can directly be inserted into headset plug 101 in earphone jack 201.Certainly in the embodiment of the present application, can also adopt composite audio line jack or composite audio line plug etc.
The structural representation of the audio interface device power-supplying circuit that Fig. 2 provides for embodiment of the application.
As shown in Figure 2; this audio interface device comprises: shell 1, voice applications functional module 2, audio interface 3 and supply module 4; wherein: voice applications functional module 2, audio interface 3 and supply module 4 are all positioned at shell 1; shell 1 is containment vessel as a whole, and voice applications functional module 2, audio interface 3 and supply module 4 are protected.
Voice applications functional module 2 is connected with the total interface in audio interface 3, or, be connected with the part of interface in audio interface 3, mutual for carry out signal by audio interface 3 and intelligent terminal 200.Audio interface 3 can be all discrete device with voice applications functional module 2, and alternatively, in the embodiment of the present application, audio interface 3 can also be integrated in voice applications functional module 2.
Voice applications functional module 2 can comprise: remote controller module, password authentication module, card reading module and some measurement modules, such as: temperature-measuring module, moisture measurement module, heart rate measurement module and measurement of bldy temperature module etc., voice applications functional module can be the hardware circuit of circuit component composition, also can be microprocessor, or, the circuit that hardware circuit combines with microprocessor.
As shown in Figure 2, this audio interface device power-supplying circuit can comprise: on-off circuit 5, one end of on-off circuit 5 is connected with the output terminal of supply module 4, and the other end of on-off circuit 5 is connected with described voice applications functional module 2, for controlling conducting or shutoff between described supply module 4 and described voice applications functional module 2.
The control end of on-off circuit 5 is connected with one or more described input interfaces in described audio interface 3, for example: any one of L channel input interface and R channel input interface or two, for receiving the electric signal of the one or more described input interface output of described audio interface 3, and be subject to the described electric signal of a described input interface output or be subject to the control of the described electric signal of a plurality of described input interface outputs to carry out conducting simultaneously.In the embodiment of the present application, the control end of on-off circuit 5 is connected with the L channel input interface L in audio interface 3.
In addition, when the control end of on-off circuit 5 does not receive electric signal, on-off circuit 5 will keep long-term off state.Alternatively, in the embodiment of the present application, on-off circuit 5 can be the electron devices such as analog switch, transistor or metal-oxide-semiconductor.
From above scheme, this audio interface device power-supplying circuit that the embodiment of the present application provides, be arranged on the on-off circuit between supply module and voice applications functional module, be subject to the control of the some output interfaces in audio interface, or, when being subject to a plurality of output interface in audio interface, control, can be by conducting between supply module and voice applications functional module.Like this, when audio interface device is connected by audio interface with intelligent terminal, audio interface device can power on automatically, and when the audio interface between audio interface device and intelligent terminal disconnects, audio interface device can auto-breaking.
Compared with prior art, the power supply of audio interface device easily of this audio interface device power-supplying circuit is simple to operation quick.
In addition, the on-off circuit that the embodiment of the present application provides can adopt the equipment such as electronic switch, oneself power consumption is very little, and only just can power when the state that audio interface device connects owing to can controlling supply module, so can improve the serviceable life of supply module, improve the utilization factor of battery, and the application cycle of improving audio interface device product.
The structural representation of the audio interface device power-supplying circuit that Fig. 3 provides for another embodiment of the application.
As shown in Figure 3, on basis embodiment illustrated in fig. 2, power-supplying circuit can also comprise: ON-OFF control circuit 6, the input end of ON-OFF control circuit 6 is connected with one or more described sound channel input interfaces in described audio interface 3, the output terminal of described ON-OFF control circuit 6 is connected with the control end of described on-off circuit 5, for receiving the electric signal of described audio interface 3 inputs, and to the controlled signal of described Electric signal processing; Described control signal is used for controlling described on-off circuit and carries out conducting.
Alternatively, in the embodiment of the present application, as shown in Figure 4, ON-OFF control circuit 6 can comprise: stepup transformer 61, rectifier 62, wave filter 63 and voltage stabilizer 64, wherein,
The input end of described stepup transformer 61 is connected with one or more described input interfaces in described audio interface 3, for the voltage of the electric signal of described audio interface 3 inputs is raise;
The input end of described rectifier 62 is connected with the output terminal of described stepup transformer 61, for the described electric signal after voltage is raise, by AC signal, is transformed to direct current signal;
The input end of described wave filter 63 is connected with the output terminal of described rectifier 62, for the described electric signal to after rectification, carries out filtering;
The input end of described voltage stabilizer 64 is connected with the output terminal of described wave filter 63, for filtered described electric signal is carried out to voltage stabilizing processing, obtain voltage stabilization and for controlling the control signal of described on-off circuit conducting;
The output terminal of described voltage stabilizer 64 is connected with the control end of described on-off circuit 5.
In the embodiment of the present application, ON-OFF control circuit 6 and described on-off circuit 3 can be SOC integrated chip.Alternatively, in other embodiment of the application, ON-OFF control circuit 6 and described on-off circuit 3 can also adopt discrete device etc.In addition, the stepup transformer of mentioning in the embodiment of the present application, rectifier, wave filter and voltage stabilizer can adopt an integrated component, also can adopt the circuit structure with said function.
Compare with embodiment illustrated in fig. 1, in the embodiment of the present application, this audio interface device power-supplying circuit is owing to having adopted ON-OFF control circuit to process the electric signal of audio interface input, obtain the control signal of voltage stabilization, and then utilize the control signal of this voltage stabilization when on-off circuit is controlled, can avoid because spread of voltage causes on-off circuit unstable working condition, and then cause audio interface device to occur the situation of power down.
The structural representation of the audio interface device power-supplying circuit that Fig. 5 provides for the another embodiment of the application.As shown in Figure 5, on the embodiment basis shown in Fig. 2 or Fig. 3, this audio interface device power-supplying circuit can also comprise: delay circuit 7.
The input end of delay circuit 7 is connected with the one or more described sound channel input interface in audio interface, as shown in solid line in Fig. 5, output terminal is connected with the input end of described on-off circuit 5, for when receiving the electric signal of the one or more described sound channel input interface inputs of described audio interface, conducting after delay Preset Time.
In addition, as shown in phantom in Figure 5, the output terminal of delay circuit 7 can also be connected with the control end of described on-off circuit 5, for when receiving the electric signal of the one or more described sound channel input interface inputs of described audio interface, and conducting after delay Preset Time.Alternatively, in the embodiment of the present application, delay circuit 7 can be the devices such as metal-oxide-semiconductor.
Due to when reality is used, audio interface device or intelligent terminal all can be with static, once now audio interface device is connected with intelligent terminal, static can produce electric discharge phenomena the circuit in audio interface device is caused to damage, so in the embodiment of the present application, and by delay circuit 7 is set, can be after audio interface device be connected with intelligent terminal, wouldn't conducting in short time, and postpone after a period of time delay circuit 7 just conductings.Alternatively, in other embodiment of the application, other circuit can also be set in this control circuit, such as anti-breakdown element etc., solve the problem of static discharge.
In addition, alternatively, in the embodiment of the present application, this control circuit can also comprise: power light, described power light is connected between described supply module and described on-off circuit, or, be connected between described on-off circuit and described voice applications functional module, for carry out luminous indication after described on-off circuit conducting.
On the basis of above-described embodiment, the application also provides a kind of audio interface device method for controlling power supply, and as shown in Figure 6, the method can comprise:
S100: the electric signal that receives from a described audio interface input interface or the input of a plurality of input interface;
S200: utilize described electric signal to control described on-off circuit conducting, so that described supply module is powered to described voice applications functional module.
Alternatively, as shown in Figure 7, before step S200, the method can also comprise:
S301: to the processing of boosting of described electric signal;
S302: the described electric signal after voltage is raise is transformed to direct current signal by AC signal;
S303: the described electric signal after rectification is carried out to filtering;
S304: filtered described electric signal is carried out to voltage stabilizing processing, obtain voltage stabilization and for the control signal of gauge tap circuit turn-on.
After step S304, perform step S200, and in step S200, can utilize this control signal gauge tap circuit turn-on.
From above scheme, this audio interface device method for controlling power supply that the embodiment of the present application provides, the electric signal of a reception input interface or a plurality of input interface input from described audio interface, and utilize described electric signal to control described on-off circuit conducting, so that described supply module is powered to described voice applications functional module.Like this, when audio interface device is connected by audio interface with intelligent terminal, audio interface device can power on automatically, and when the audio interface between audio interface device and intelligent terminal disconnects, this audio interface device can auto-breaking.
Compared with prior art, this audio interface device method for controlling power supply can be controlled the power supply of audio interface device easily, simple to operation quick.
While for convenience of description, describing above device, with function, being divided into various unit describes respectively.Certainly, when enforcement is of the present invention, the function of each unit can be realized in same or a plurality of software and/or hardware.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually referring to, each embodiment stresses is the difference with other embodiment.Especially, for device or system embodiment, because it is substantially similar in appearance to embodiment of the method, so describe fairly simplely, relevant part is referring to the part explanation of embodiment of the method.Apparatus and system embodiment described above is only schematic, the wherein said unit as separating component explanation can or can not be also physically to separate, the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.
The above is only the specific embodiment of the present invention, makes those skilled in the art can understand or realize the present invention.To the multiple modification of these embodiment, will be apparent to one skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an audio interface device power-supplying circuit, is characterized in that, described audio interface device comprises: audio interface, supply module and voice applications functional module, and described audio interface comprises at least one input interface;
Described power-supplying circuit comprises: on-off circuit,
One end of described on-off circuit is connected with the output terminal of described supply module, and the other end of described on-off circuit is connected with described voice applications functional module, for controlling conducting or shutoff between described supply module and described voice applications functional module;
The control end of described on-off circuit is connected with one or more described input interfaces in described audio interface, for receiving the electric signal of the one or more described input interface output of described audio interface, and be subject to the described electric signal of a described input interface output or be subject to the control of the described electric signal of a plurality of described input interface outputs to carry out conducting simultaneously.
2. audio interface device power-supplying circuit according to claim 1, is characterized in that, described power-supplying circuit also comprises: ON-OFF control circuit;
The input end of described ON-OFF control circuit is connected with one or more described sound channel input interfaces in described audio interface, the output terminal of described ON-OFF control circuit is connected with the control end of described on-off circuit, for receiving the electric signal of described audio interface input, and to the controlled signal of described Electric signal processing;
Described control signal is used for controlling described on-off circuit and carries out conducting.
3. audio interface device power-supplying circuit according to claim 2, is characterized in that, described ON-OFF control circuit comprises: stepup transformer, rectifier, wave filter and voltage stabilizer, wherein,
The input end of described stepup transformer is connected with one or more described input interfaces in described audio interface, for the voltage of the electric signal of described audio interface input is raise;
The input end of described rectifier is connected with the output terminal of described stepup transformer, for the described electric signal after voltage is raise, by AC signal, is transformed to direct current signal;
The input end of described wave filter is connected with the output terminal of described rectifier, for the described electric signal to after rectification, carries out filtering;
The input end of described voltage stabilizer is connected with the output terminal of described wave filter, for filtered described electric signal is carried out to voltage stabilizing processing, obtain voltage stabilization and for controlling the control signal of described on-off circuit conducting;
The output terminal of described voltage stabilizer is connected with the control end of described on-off circuit.
4. according to the audio interface device power-supplying circuit described in claim 1,2 or 3, it is characterized in that, described input interface comprises: one or two in L channel input interface and R channel input interface.
5. audio interface device power-supplying circuit according to claim 4, is characterized in that, described control circuit also comprises: delay circuit;
The input end of described delay circuit is connected with one or more described sound channel input interfaces in described audio interface, output terminal is connected with the input end of described ON-OFF control circuit or the control end of described on-off circuit is connected, for when receiving the electric signal of the one or more described sound channel input interface inputs of described audio interface, conducting after delay Preset Time.
6. audio interface device power-supplying circuit according to claim 5, is characterized in that, described power-supplying circuit also comprises: power light;
Described power light is connected between described supply module and described on-off circuit, or, be connected between described on-off circuit and described voice applications functional module, for carry out luminous indication after described on-off circuit conducting.
7. according to the audio interface device power-supplying circuit described in claim 2 or 3, it is characterized in that, described ON-OFF control circuit and described on-off circuit are integrated chip.
8. an audio interface device, is characterized in that, comprising: audio interface, supply module, voice applications functional module and the audio interface device power-supplying circuit as described in claim 1-7 any one;
Described voice applications functional module is connected with described audio interface.
9. an audio interface device method for controlling power supply, it is characterized in that, described audio interface device comprises: audio interface, supply module, power-supplying circuit and voice applications functional module, wherein, described audio interface comprises at least one input interface, described power-supplying circuit comprises: on-off circuit, described on-off circuit is connected between described supply module and described voice applications functional module, and the control end of described on-off circuit is connected with an input interface or a plurality of input interface in described audio interface
Described method comprises:
The electric signal of a reception input interface or a plurality of input interface input from described audio interface;
Utilize described electric signal to control described on-off circuit conducting, so that described supply module is powered to described voice applications functional module.
10. method according to claim 9, is characterized in that, described method also comprises:
To the processing of boosting of described electric signal;
Described electric signal after voltage is raise is transformed to direct current signal by AC signal;
Described electric signal after rectification is carried out to filtering;
Filtered described electric signal is carried out to voltage stabilizing processing, obtain voltage stabilization and for the control signal of gauge tap circuit turn-on.
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| CN201310718994.6A CN103680553A (en) | 2013-12-23 | 2013-12-23 | Power supply control circuit, power supply control device and power supply control method for audio interface equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310718994.6A CN103680553A (en) | 2013-12-23 | 2013-12-23 | Power supply control circuit, power supply control device and power supply control method for audio interface equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018010092A1 (en) * | 2016-07-12 | 2018-01-18 | 深圳市汇顶科技股份有限公司 | Wearable apparatus and method capable of performing power supply management |
| CN112820303A (en) * | 2020-12-31 | 2021-05-18 | 北京握奇数据股份有限公司 | Audio interface authentication device |
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| CN202694391U (en) * | 2012-03-21 | 2013-01-23 | 深圳市文鼎创数据科技有限公司 | Intelligent secret key apparatus |
| CN103051194A (en) * | 2013-01-06 | 2013-04-17 | 王寅寅 | Device for replacing 15V laminated cell with single cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06311252A (en) * | 1993-04-26 | 1994-11-04 | Matsushita Electric Ind Co Ltd | Transmission equipment |
| CN202694391U (en) * | 2012-03-21 | 2013-01-23 | 深圳市文鼎创数据科技有限公司 | Intelligent secret key apparatus |
| CN103051194A (en) * | 2013-01-06 | 2013-04-17 | 王寅寅 | Device for replacing 15V laminated cell with single cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018010092A1 (en) * | 2016-07-12 | 2018-01-18 | 深圳市汇顶科技股份有限公司 | Wearable apparatus and method capable of performing power supply management |
| CN112820303A (en) * | 2020-12-31 | 2021-05-18 | 北京握奇数据股份有限公司 | Audio interface authentication device |
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