CN102170104A - Data exchange apparatus - Google Patents
Data exchange apparatus Download PDFInfo
- Publication number
- CN102170104A CN102170104A CN2011100723168A CN201110072316A CN102170104A CN 102170104 A CN102170104 A CN 102170104A CN 2011100723168 A CN2011100723168 A CN 2011100723168A CN 201110072316 A CN201110072316 A CN 201110072316A CN 102170104 A CN102170104 A CN 102170104A
- Authority
- CN
- China
- Prior art keywords
- data
- electronic device
- power line
- power
- electronic installation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a data exchange apparatus, which comprises a first electronic device and a second electronic device; the power output end of the first electronic device is connected with the power input end of the second electronic device through a power line; the data interface of the first electronic device is connected with the data interface of the second electronic device through a data line; an over-voltage protection unit conducted in one way is connected between the data interface of the second electronic device and the power input end in series; the data exchange apparatus further comprises a control unit; and the control unit is connected on the power line in series for stopping the signal conduction of the power line when the power output end of the first electronic device outputs low level or low voltage. The embodiment of the invention further provides another data exchange apparatus; each data exchange apparatus guarantees that the voltage on the data line is not lowered by the power line and guarantees that the data transmission apparatus and the data receiving apparatus have stable communication.
Description
Technical field
The present invention relates to the electronic circuit technology field, be specifically related to a kind of switch and imaging data switching equipment.
Background technology
In the electronic circuit technology field, often relate to the data communication problem between two or more different electronic installations, general solution is, consult Fig. 1, a kind of switch, comprise first electronic installation, second electronic device, connecting lines such as power line Vcc, clock line CLK, data wire DATA and ground wire GND are set between first electronic installation and second electronic device, first electronic installation and second electronic device are by the exchanges data between these connecting lines realization stream oriented devices.
For example, syndeton shown in Figure 1 is applied to exchanges data between imaging device and the imaging box chip, concrete structure as shown in Figure 2, imaging device and imaging box chip are formed an imaging data switching equipment by power line Vcc, clock line CLK, data wire DATA and ground wire GND, wherein ground wire GND is with reference to 0 current potential, V is a power supply, and the data-interface P1 of the data wire DATA in the imaging device links to each other with internal electric source V by a pull-up resistor R1.The data-interface of the data wire DATA of imaging box chip inside and the input of power line Vcc are connected with an Overvoltage protecting unit, and this Overvoltage protecting unit has unidirectional conducting function, for example diode.During normal running, data-interface P1, P2 carry out two-way exchanges data by data wire DATA, when the P1 mouth is not carried out any data manipulation, are placed the high potential stable state by pull-up resistor R1; But the unpredictable situation that the voltage on the DATA line increases suddenly also can appear; when the voltage on being higher than power line Vcc is a certain amount of; will the conducting Overvoltage protecting unit; make the positive charge on the data wire DATA flow to power line Vcc; and then reduced voltage on the data wire DATA, played the effect of overvoltage protection.
But, the situation that imaging device control power line Vcc is output as 0 current potential or low-voltage can appear in the practical communication process of imaging device and imaging box chip, again because the conduction impedance of Overvoltage protecting unit is very little, resistance much smaller than pull-up resistor R1, like this, easily causing current potential on the data wire DATA or voltage to be drawn is 0 current potential or low-voltage; And the pre-efficient communication that realizes between the two, it is low excessively that current potential on the data wire DATA or voltage can not be drawn by the voltage on the power line Vcc.Therefore, if adopt imaging device structure shown in Figure 2 to realize the communication between imaging device and the imaging box chip, then easily cause the exchanges data between imaging device and the imaging box chip to be interrupted, and then cause the imaging device can not recognition imaging box chip, finally influence the imaging operation of imaging device.
Consult Fig. 3, imaging device and imaging box chip also comprise a power module V2 except being connected by connecting lines such as clock line CLK, data wire DATA, ground wire GND, and wherein, power module V2 is to the independently-powered power module of imaging box chip.Be in series with an Overvoltage protecting unit between the data-interface of imaging box chip and the power module V2 output, this Overvoltage protecting unit has unidirectional conducting function, for example diode.During normal running, P1, P2 carry out two-way exchanges data by the DATA line, when the P1 mouth is not carried out any data manipulation, are placed the high potential stable state by pull-up resistor R1; But also the situation that the voltage on the data wire DATA increases suddenly can appear; when the voltage on the data wire DATA is higher than power module V2 when a certain amount of; at this moment will the conducting Overvoltage protecting unit; make the positive charge on the data wire DATA flow to power module V2; and then reduced voltage on the DATA line, played the effect of overvoltage protection.Certainly, V2 is except can also powering simultaneously to imaging box chip and imaging device to imaging box chip is independently-powered, and the interior power supply V of imaging device this moment has not just existed.Power module V2 can be independent of outside imaging device and the imaging box chip, also can be integrated in the imaging box chip, or be integrated in the imaging device, does not do detailed description at this.
But, the situation that power module V2 outage in the data exchange process of imaging device and imaging box, can occur, again because the conduction impedance of Overvoltage protecting unit is very little, much smaller than the resistance of pull-up resistor R1, easy like this to cause current potential on the data wire DATA or voltage to be drawn be 0 current potential or low-voltage; And desire realizes efficient communication between the two must requiring the voltage on the DATA line not change with the change in voltage of power module V2.Therefore, if adopt the described electric circuit construction of Fig. 3 in the hope of realizing the exchanges data between imaging device and the imaging box chip, then easily cause the exchanges data between imaging device and the imaging box chip to be interrupted, and then cause the imaging device can not the recognition imaging box, finally influence the consequence of the imaging operation of imaging device.
In research and practice process to prior art, the present inventor finds, does not do too big variation on the available data switching equipment, satisfies the switch that the voltage on the data wire DATA can not dragged down by the voltage on the power line Vcc again.
Summary of the invention
The embodiment of the invention provides the voltage on the data wire can be by a kind of switch that is dragged down by the voltage on the power line.
A kind of switch comprises first electronic installation and second electronic device,
The power output end of first electronic installation connects the power input of second electronic device by power line,
The data-interface of first electronic installation connects the data-interface of second electronic device by data wire,
Be in series with the Overvoltage protecting unit of unidirectional conducting between the data-interface of second electronic device and the power input,
Described switch also comprises control unit, and described control unit is connected on the described power line, is used for when the power output end output low level of described first electronic installation or low-voltage, by the signal conduction of described power line.
Described control unit comprises, conducting direction is by the power output end of the first electronic installation unidirectional breakover element to the power input of second electronic device.
Described unidirectional breakover element is a diode.
Described control unit comprises trigistor, the switch terminals of described trigistor is connected on the described power line, the control end of described trigistor receives control signal, described control signal is from first electronic installation, second electronic device or external connected electronic device, when the power output end output low level of described first electronic installation or low-voltage,, control between the described switch terminals and disconnect according to described control signal.
Described trigistor is a triode.
Described control unit is arranged in described first electronic installation or the second electronic device.
Described first electronic installation is an imaging device, and described second electronic device is an imaging box chip.
A kind of switch comprises first electronic installation, second electronic device and the power module that is independent of described first electronic installation and second electronic device,
The data-interface of first electronic installation connects the data-interface of second electronic device by data wire,
The power input of second electronic device connects the power output end of power module by power line,
Be in series with the Overvoltage protecting unit of unidirectional conducting between the data-interface of second electronic device and the power input; described switch also comprises control unit; described control unit is connected on the described power line; be used for when the power output end output low level of described power module or low-voltage, by the signal conduction of described power line.
Described low-voltage is the voltage about 0V, and the voltage about 0V is low level 0.
The embodiment of the invention adopts control unit is arranged on first electronic installation or the second electronic device, perhaps control unit is connected on the power line Vcc.Because the reverse cut-off characteristics of control unit, when the output voltage of power line is low level or low-voltage, make the positive charge on the data wire can not flow to power line, thereby avoided the voltage on the data wire to take place, realized stability of data transmission and reliability because of the situation that the brownout on the power line is dragged down.
Description of drawings
Fig. 1 is a switch circuit connection diagram in the prior art;
Fig. 2 is embodiment one schematic diagram of exchanges data between imaging device in the prior art;
Fig. 3 is embodiment two schematic diagrames of exchanges data between imaging device in the prior art;
Fig. 4 is embodiment one a switch conspectus provided by the invention;
Fig. 5 is the equipment schematic diagram of a kind of execution mode among the embodiment one provided by the invention;
Fig. 6 is the equipment schematic diagram of another kind of execution mode among the embodiment one provided by the invention;
Fig. 7 is the switch schematic diagram of embodiment two provided by the invention;
Fig. 8 is the switch schematic diagram of embodiment three provided by the invention;
Fig. 9 is the schematic diagram that switch provided by the invention is used in imaging device;
Figure 10 is embodiment four switch conspectuses provided by the invention;
Figure 11 is the equipment schematic diagram of a kind of execution mode among the embodiment four provided by the invention;
Figure 12 is the equipment schematic diagram of another kind of execution mode among the embodiment four provided by the invention;
Embodiment
The embodiment of the invention provides a kind of switch, below is elaborated respectively.
Embodiment one:
See also Fig. 4; switch comprises first electronic installation; second electronic device; power line Vcc; data wire DATA; clock line CLK and ground wire GND; can also comprise other connecting lines such as select lines; the power output end of first electronic installation connects the power input of second electronic device by power line Vcc; the data-interface of first electronic installation connects the data-interface of second electronic device by data wire DATA; be in series with the Overvoltage protecting unit of unidirectional conducting between the data-interface of second electronic device and the power input, as diode.Clock line CLK and ground wire GND two ends are connected on the interface of first electronic installation and second electronic device correspondence, series connection one pull-up resistor R between the internal electric source V of first electronic installation and data-interface, switch also comprises control unit, control unit is connected on the power line Vcc, be used for when the power output end output low level of first electronic installation or low-voltage, oppositely by the signal conduction of power line Vcc.When the output voltage of power line Vcc is 0 or during electronegative potential, control unit ends, thereby has guaranteed that the voltage on the data wire DATA can not dragged down by power line Vcc.
See also Fig. 5, the schematic diagram of a kind of execution mode of the embodiment of the invention one, the control unit that is connected in the present embodiment on the power line Vcc is diode D2, the conducting direction of diode D2 is to second electronic device by first electronic installation.When the voltage on the data wire DATA is higher than voltage on the power line Vcc when a certain amount of and since diode D2 oppositely by effect, make that the discharge loop from data wire DATA to power line Vcc has not existed.But also have an overvoltage crowbar in second electronic device, during overvoltage, the positive charge on the data wire DATA flows into the overvoltage crowbar in the second electronic device, can play the effect of overvoltage protection equally.Output voltage on power line Vcc just often, diode D2 normally.When the output voltage on the power line Vcc is 0 or crosses when low that diode D2 oppositely ends.Thereby guaranteed that the voltage on the data wire DATA is not dragged down by power line Vcc, ensures first electronic installation and second electronic device stabilized communication.
See also Fig. 6, another execution mode schematic diagram of the embodiment of the invention one, the control unit that is connected on the power line Vcc is triode T2, the switch terminals emitter and collector of triode T2 is connected on the power line Vcc, the control end of triode T2 is a base stage, control end receives the control signal of first electronic installation, the conducting of control triode T2 with end.When the voltage on the data wire DATA is higher than voltage on the power line Vcc when a certain amount of and since triode T2 oppositely by effect, make that the discharge loop from data wire DATA to power line Vcc has not existed.But also have an overvoltage crowbar in second electronic device, during overvoltage, the positive charge on the data wire DATA flows into the overvoltage crowbar in the second electronic device, can play the effect of overvoltage protection equally.The concrete operation principle that circuit connects triode T2 is, triode T2 receives the control signal of first electronic installation, when the voltage of control end base stage is 0, and power line Vcc operate as normal, triode T2 conducting; When the output voltage of power line Vcc is 0 or crosses when low that triode T2 ends, and guarantees that the voltage on the data wire DATA is not dragged down by power line Vcc, ensures first electronic installation and second electronic device stabilized communication.Present embodiment has only provided the course of work that control signal is provided to triode control end base stage by first electronic installation.In fact, control signal also can have second electronic device or other external electronic installations to send, and can play the effect of control triode T2 equally, reaches identical effect.
Embodiment two:
See also Fig. 7; switch comprises first electronic installation; second electronic device; power line Vcc; data wire DATA; clock line CLK and ground wire GND; can also comprise other connecting lines such as select lines; the power output end of first electronic installation connects the power input of second electronic device by power line Vcc; the data-interface of first electronic installation connects the data-interface of second electronic device by data wire DATA; be in series with the Overvoltage protecting unit of unidirectional conducting between the data-interface of second electronic device and the power input, as diode.Clock line CLK and ground wire GND two ends are connected on the interface of first electronic installation and second electronic device correspondence, series connection one pull-up resistor R between the internal electric source V of first electronic installation and data-interface, switch also comprises control unit, this control unit is arranged on first electronic installation, this control unit is diode D2 or triode T2, be used for when the power output end output low level of first electronic installation, oppositely end the signal conduction of power line Vcc.When the output voltage of power line Vcc is 0 or during electronegative potential, control unit oppositely ends.Thereby guaranteed that the voltage on the data wire DATA can not dragged down by power line Vcc, ensures first electronic installation and second electronic device stabilized communication.
Diode D2 and the triode T2 course of work in the present embodiment are identical with the course of work among the embodiment one, and present embodiment is no longer done in detail and given unnecessary details.
Embodiment three:
See also Fig. 8; switch comprises first electronic installation; second electronic device; power line Vcc; data wire DATA; clock line CLK and ground wire GND; can also comprise other connecting lines such as select lines; the power output end of first electronic installation connects the power input of second electronic device by power line Vcc; the data-interface of first electronic installation connects the data-interface of second electronic device by data wire DATA; be in series with the Overvoltage protecting unit of unidirectional conducting between the data-interface of second electronic device and the power input, as diode.Clock line CLK and ground wire GND two ends are connected on the interface of first electronic installation and second electronic device correspondence, series connection one pull-up resistor R between the internal electric source V of first electronic installation and data-interface, switch also comprises control unit, this control unit is arranged on the second electronic device, this control unit is diode D2 or triode T, be used for when the power output end output low level of first electronic installation, oppositely end the signal conduction of power line Vcc.When the output voltage of power line Vcc is 0 or during electronegative potential, control unit oppositely ends.Thereby guaranteed that the voltage on the data wire DATA can not dragged down by power line Vcc, ensures first electronic installation and second electronic device stabilized communication.
Diode D2 and the triode T2 course of work in the present embodiment are identical with the course of work among the embodiment one, and present embodiment is no longer done in detail and given unnecessary details.
See also Fig. 9; equipment comprises imaging device; imaging box chip, power line Vcc, data wire DATA; clock line CLK and ground wire GND; can also comprise other connecting lines such as select lines, the power output end of imaging device is by the power input of power line Vcc connection imaging box chip, and the data-interface of imaging device connects the data-interface of imaging box chip by data wire DATA; be in series with the Overvoltage protecting unit of unidirectional conducting between the data-interface of imaging box chip and the power input, as diode.Clock line CLK and ground wire GND two ends are connected on the interface of imaging device and imaging box chip correspondence, series connection one pull-up resistor R1 between the internal electric source V of imaging device and data-interface, switch also comprises control unit, control unit is connected on the power line Vcc, be used for when the power output end output low level of imaging device, oppositely end the signal conduction of power line Vcc.When the output voltage of power line Vcc is 0 or during electronegative potential, control unit oppositely ends.Thereby guaranteed that the voltage on the data wire DATA can not dragged down by power line Vcc.
Control unit also can be integrated on imaging device or the imaging box chip, can play and be connected on the last the same effect of power line Vcc, can guarantee that equally the voltage on the data wire DATA can not dragged down by power line Vcc, ensure imaging device and imaging box chip stabilized communication.
Diode D2 and the triode T2 course of work in the present embodiment are identical with the course of work among the embodiment one, and present embodiment is no longer done in detail and given unnecessary details.
Embodiment four:
See also Figure 10; a kind of switch comprises first electronic installation; second electronic device and the power module V2 that is independent of first electronic installation and second electronic device; the data-interface of first electronic installation connects the data-interface of second electronic device by data wire DATA; the power input of second electronic device connects the power output end of power module V2 by power line Vcc; be in series with the Overvoltage protecting unit of unidirectional conducting between the data-interface of second electronic device and the power input; described switch also comprises control unit; described control unit is connected on the described power line Vcc; be used for when the power output end output low level of described first electronic installation or low-voltage, by the signal conduction of described power line.When the output voltage of power line Vcc is 0 or during electronegative potential, control unit ends, thereby has guaranteed that the voltage on the data wire DATA can not dragged down by power line Vcc.
See also Figure 11, the control unit that is connected in the present embodiment on the power line Vcc is diode D3, and the conducting direction of diode D3 is to second electronic device by power module V2.When the voltage on the data wire DATA is higher than voltage on the power line Vcc when a certain amount of and since diode D2 oppositely by effect, make that the discharge loop from data wire DATA to power line Vcc has not existed.But also have an overvoltage crowbar in second electronic device, during overvoltage, the positive charge on the data wire DATA flows into the overvoltage crowbar in the second electronic device, can play the effect of overvoltage protection equally.When power module V2 normal power supply, diode D3 normally.When power module V2 power output end output LOW voltage or low level, diode D3 oppositely ends.Thereby guaranteed that the voltage on the data wire DATA is not dragged down by power line Vcc, ensures first electronic installation and second electronic device stabilized communication.
See also Figure 12, the control unit that is connected in the present embodiment on the power line Vcc is triode T3, the switch terminals emitter and collector of triode T3 is connected on the power line Vcc, the control end of triode T3 is a base stage, control end receives the control signal of first electronic installation, the conducting of control triode T3 with end.When the voltage on the data wire DATA is higher than voltage on the power line Vcc when a certain amount of and since triode T3 oppositely by effect, make that the discharge loop from data wire DATA to power line Vcc has not existed.But also have an overvoltage crowbar in second electronic device, during overvoltage, the positive charge on the data wire DATA flows into the overvoltage crowbar in the second electronic device, can play the effect of overvoltage protection equally.The concrete operation principle that circuit connects triode T3 is, triode T3 receives the control signal of first electronic installation, when the voltage of control end base stage is 0, and power line Vcc operate as normal, triode T3 conducting; When the output voltage of power line Vcc is 0 or crosses when low that triode T3 ends, and guarantees that the voltage on the data wire DATA is not dragged down by power line Vcc, ensures first electronic installation and second electronic device stabilized communication.Present embodiment has only provided the course of work that control signal is provided to triode control end base stage by first electronic installation.In fact, control signal also can have second electronic device or other external electronic installations to send, and can play the effect of control triode T3 equally, reaches identical effect.
According to embodiment four described technical schemes, control unit also can be arranged in first electronic installation or the second electronic device, and control unit can be diode or triode, and its operation principle is identical with embodiment four, no longer does in detail and gives unnecessary details.
The switch that embodiment four is provided can be applied in the imaging device equally, does not do in detail at this and gives unnecessary details.
Data-interface does not in embodiments of the present invention draw in Figure of description, but actual the existence can consult Fig. 2, Fig. 3 understands.
The application of inventive concept is not limited to data wire DATA, comprises that also the clock line that connects two electronic installations, select lines etc. transmit the holding wire of information.
More than the embodiment of the invention is described in detail switch and the application of switch in imaging device that is provided, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand equipment of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a switch comprises first electronic installation and second electronic device,
The power output end of first electronic installation connects the power input of second electronic device by power line,
The data-interface of first electronic installation connects the data-interface of second electronic device by data wire,
Be in series with the Overvoltage protecting unit of unidirectional conducting between the data-interface of second electronic device and the power input, it is characterized in that:
Described switch also comprises control unit, and described control unit is connected on the described power line, is used for when the power output end output low level of described first electronic installation or low-voltage, by the signal conduction of described power line.
2. switch according to claim 1 is characterized in that, described control unit comprises, conducting direction is by the power output end of the first electronic installation unidirectional breakover element to the power input of second electronic device.
3. switch according to claim 2 is characterized in that, described unidirectional breakover element is a diode.
4. switch according to claim 1, it is characterized in that, described control unit comprises trigistor, the switch terminals of described trigistor is connected on the described power line, the control end of described trigistor receives control signal, described control signal is from first electronic installation, second electronic device or external connected electronic device, when the power output end output low level of described first electronic installation or low-voltage, according to described control signal, control between the described switch terminals and disconnect.
5. switch according to claim 4 is characterized in that, described trigistor is a triode.
6. according to any described switch of claim 1～5, it is characterized in that described control unit is arranged in described first electronic installation or the second electronic device.
7. switch according to claim 1 is characterized in that, described first electronic installation is an imaging device, and described second electronic device is an imaging box chip.
8. a switch comprises first electronic installation, second electronic device and the power module that is independent of described first electronic installation and second electronic device,
The data-interface of first electronic installation connects the data-interface of second electronic device by data wire,
The power input of second electronic device connects the power output end of power module by power line,
Be in series with the Overvoltage protecting unit of unidirectional conducting between the data-interface of second electronic device and the power input, it is characterized in that:
Described switch also comprises control unit, and described control unit is connected on the described power line, is used for when the power output end output low level of described power module or low-voltage, by the signal conduction of described power line.
9. switch according to claim 8 is characterized in that, described control unit is arranged in described first electronic installation or the second electronic device.
10. according to Claim 8 or 9 described switches, it is characterized in that described control unit comprises diode or triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110072316.8A CN102170104B (en) | 2011-03-24 | 2011-03-24 | Data exchange apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110072316.8A CN102170104B (en) | 2011-03-24 | 2011-03-24 | Data exchange apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102170104A true CN102170104A (en) | 2011-08-31 |
| CN102170104B CN102170104B (en) | 2014-08-13 |
Family
ID=44491130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110072316.8A Active CN102170104B (en) | 2011-03-24 | 2011-03-24 | Data exchange apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102170104B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2505913Y (en) * | 2001-10-09 | 2002-08-14 | 旭丽股份有限公司 | Shared interface equipment |
| JP3340332B2 (en) * | 1996-11-20 | 2002-11-05 | オリジン電気株式会社 | High voltage generator with disconnection determination function |
| CN201414009Y (en) * | 2009-03-27 | 2010-02-24 | 上海华勤通讯技术有限公司 | CDMA mobile phone compatible Nokia charger circuit |
| CN201508549U (en) * | 2009-09-02 | 2010-06-16 | 中兴通讯股份有限公司 | Device and system for controlling on-off of USB (universal serial bus) interface |
| CN101794110A (en) * | 2010-03-24 | 2010-08-04 | 珠海艾派克微电子有限公司 | Machine recognition method and device between imaging device and imaging box |
| CN201955777U (en) * | 2011-03-24 | 2011-08-31 | 珠海艾派克微电子有限公司 | Data switching equipment |
-
2011
- 2011-03-24 CN CN201110072316.8A patent/CN102170104B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3340332B2 (en) * | 1996-11-20 | 2002-11-05 | オリジン電気株式会社 | High voltage generator with disconnection determination function |
| CN2505913Y (en) * | 2001-10-09 | 2002-08-14 | 旭丽股份有限公司 | Shared interface equipment |
| CN201414009Y (en) * | 2009-03-27 | 2010-02-24 | 上海华勤通讯技术有限公司 | CDMA mobile phone compatible Nokia charger circuit |
| CN201508549U (en) * | 2009-09-02 | 2010-06-16 | 中兴通讯股份有限公司 | Device and system for controlling on-off of USB (universal serial bus) interface |
| CN101794110A (en) * | 2010-03-24 | 2010-08-04 | 珠海艾派克微电子有限公司 | Machine recognition method and device between imaging device and imaging box |
| CN201955777U (en) * | 2011-03-24 | 2011-08-31 | 珠海艾派克微电子有限公司 | Data switching equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102170104B (en) | 2014-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101364745B (en) | Electronic apparatus capable of automatically choosing power supply source | |
| CN106055507B (en) | BMC signal transmitting device for USB PD communication | |
| BR102016010404A2 (en) | drive circuit, electrical system and method for driving an electrical system | |
| CN106451385A (en) | Electrostatic discharge protection circuit and integrated circuit | |
| CN103324265A (en) | Power protection circuit | |
| CN107069655A (en) | A kind of voltage protection circuit | |
| CN113328734A (en) | Fast blocking switch | |
| CN103051325B (en) | Pull-up resistance circuit for preventing reverse current filling | |
| CN102594300A (en) | Light-operated signal generating circuit | |
| CN105656176A (en) | High-reliability power switching circuit and electronic device | |
| CN102694461A (en) | Power supply management device | |
| CN107544932B (en) | The electronic device of ON-OFF control circuit and the application ON-OFF control circuit | |
| CN107894933A (en) | Support the CMOS output buffers of cold standby application | |
| CN201955777U (en) | Data switching equipment | |
| CN103139513B (en) | Antenna power supply circuit, antenna control system and digital communication device | |
| CN104882926B (en) | A kind of charging indication and mobile terminal | |
| CN110098830A (en) | A kind of the substrate switching circuit and level shifting circuit of transistor | |
| CN106449670A (en) | Optical module | |
| CN103501173A (en) | Pull-up resistor circuit for preventing inverse current transmission and input-output port circuit | |
| CN102270839B (en) | Electronic device with protective circuit | |
| CN101222147A (en) | Electric voltage reverse-connection protection circuit | |
| CN102170104B (en) | Data exchange apparatus | |
| CN215419641U (en) | Communication system | |
| CN207926553U (en) | A kind of multifunction switch controller | |
| CN104252216A (en) | Anti-creeping USB (universal serial bus) power supply circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Floor 7, Building 04, No. 63, Mingzhu North Road, Zhuhai City, Guangdong Province, 519000 Patentee after: Jihai Microelectronics Co.,Ltd. Address before: Floor 7, Building 04, No. 63, Mingzhu North Road, Zhuhai City, Guangdong Province, 519000 Patentee before: APEX MICROELECTRONICS Co.,Ltd. |