CN105630722B - Electronic equipment and signal processing method - Google Patents

Electronic equipment and signal processing method Download PDF

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Publication number
CN105630722B
CN105630722B CN201510964076.0A CN201510964076A CN105630722B CN 105630722 B CN105630722 B CN 105630722B CN 201510964076 A CN201510964076 A CN 201510964076A CN 105630722 B CN105630722 B CN 105630722B
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China
Prior art keywords
unit
electrical connection
port
control unit
port unit
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CN105630722A (en
Inventor
杨子户
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Lenovo Beijing Ltd
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Lenovo Beijing Ltd
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Priority to CN201510964076.0A priority Critical patent/CN105630722B/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38Information transfer, e.g. on bus
    • G06F13/40Bus structure
    • G06F13/4063Device-to-bus coupling
    • G06F13/4068Electrical coupling
    • G06F13/4072Drivers or receivers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K19/00Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/003Modifications for increasing the reliability for protection
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042Universal serial bus [USB]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

The embodiment of the invention discloses a kind of electronic equipment and signal processing method, the electronic equipment includes: control unit;Port unit is formed between described control unit and is electrically connected;Static discharge unit, comprising: first end is connect with the port unit;Second end connects Electro-static Driven Comb position;First control terminal, is connected with described control unit, is turned on or off the connection of the first end and the second end according to the first control signal of described control unit;Wherein, when the first end is connected to the second end, the electrostatic generated on the port unit is discharged;When the port unit is interacted with described control unit progress electric signal, the first end and the second end are disconnected.

Description

Electronic equipment and signal processing method
Technical field
The present invention relates to field of electronic device more particularly to a kind of electronic equipment and signal processing methods.
Background technique
As the sensitivity of electronic component is higher and higher, such as the transmission rate of signal transmission port is higher and higher, posts The harm that raw capacitor generates also is more and more obvious.The electrostatic for how quickly dischargeing parasitic capacitance accumulation, is in the prior art The challenge more arrived.
Summary of the invention
In view of this, at least partly being solved an embodiment of the present invention is intended to provide a kind of electronic equipment and signal processing method The problem of Electro-static Driven Comb.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
First aspect of the embodiment of the present invention provides a kind of electronic equipment, and the electronic equipment includes:
Control unit;
Port unit is formed between described control unit and is electrically connected;
Static discharge unit, comprising:
First end is connect with the port unit;
Second end connects Electro-static Driven Comb position;
First control terminal, is connected with described control unit, leads on-off according to the first control signal of described control unit Open the connection of the first end and the second end;
Wherein, when the first end is connected to the second end, the electrostatic generated on the port unit is discharged;The end When mouth unit is interacted with described control unit progress electric signal, the first end and the second end are disconnected.
Based on above scheme, the electrical connection includes for electrical connection;It is described to can be used in described control unit for electrical connection It powers to the port unit;
Described for being provided with controlled switch unit in electrical connection;
The controlled switch unit includes:
Second control terminal, connect with described control unit, leads on-off according to the second control signal of described control unit It opens described for electrical connection;
Wherein, when the first end is connected to the second end, the controlled switch unit disconnects described for electrical connection; When the first end and the second end disconnect, the controlled switch unit conducting is described for electrical connection.
Based on above scheme, described control unit, for when having detected that equipment is inserted into the port unit, first Output controls the second control signal that the controlled switch unit disconnects in specified time, and output controls the first end and described The first control signal of second end conducting;
Described control unit was also used to after first specified time, and output controls the controlled switch unit and leads Logical second control signal, output control the second control signal that the first end and the second end disconnect.
Based on above scheme, the first control signal and the second control signal are universal input output GPIO letter Number.
Based on above scheme, the electrical connection further includes detecting electrical connection;Wherein, when there is equipment to be inserted into the port unit When, the detecting electrical connection conducting;When not having equipment to be inserted into the port unit, the detecting point connection is disconnected;
The power supply unit for being connected with impedance unit in the detecting electrical connection and powering to the impedance unit;
Wherein, when the detecting, which is electrically connected, to be disconnected, said supply unit is single to the control by the impedance unit Member provides first voltage;When the detecting, which is electrically connected, to be connected, said supply unit is by the impedance unit to the control Unit provides second voltage;
The first voltage is not equal to the second voltage.
Based on above scheme, the detecting electrical connection is connected with the grounding pin of the port unit.
Based on above scheme,
The static discharge unit, comprising:
Transient voltage suppressor diode TVS is connect with the first end and the second end respectively;
First controlled switching element;
First controlled switching element includes the first connecting pin, second connection end and third connecting pin;
First connecting pin and second connection end are connected with the TVS;
Third connecting pin is connected with first control terminal, for according to received first control of first control terminal Signal conduction disconnects first connecting pin and second connection end.
Based on above scheme, the port unit includes usb interface unit;
The usb interface unit includes energization pins and data pin;
Wherein, the energization pins and the data pin are connected with the first end.
Second aspect of the embodiment of the present invention provides a kind of signal processing method, which comprises
Whether detection port unit has equipment insertion;
If the port unit has equipment insertion, kept within the first specified time the port unit and control unit it Between the disconnection for electrical connection;And static discharge unit is connected so that the port unit is discharged by the static discharge unit Electrostatic.
Based on above scheme, the method also includes:
After first specified time, conducting is described for electrical connection, disconnects the static discharge unit.
Based on above scheme, whether the detection port unit has equipment insertion, comprising:
Whether the voltage that the detecting electrical connection that detection is connected on the port unit provides by first voltage is changed to the Two voltages;Wherein, the first voltage is not equal to the second voltage;
If being changed to second voltage by the first voltage, determine that the port unit has equipment insertion.
Electronic equipment and signal processing method provided in an embodiment of the present invention, by the way that Electro-static Driven Comb list is arranged in electronic equipment Member discharges the electrostatic on port unit under the control for the first control signal that can form control unit, avoids port single The damage such as electrostatic breakdown caused by the electrostatic of member, while electrostatic can also be reduced, signal between port unit and control unit is passed Defeated interference.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first electronic equipment provided in an embodiment of the present invention;
Fig. 2A is the structural schematic diagram of second of electronic equipment provided in an embodiment of the present invention;
Fig. 2 B provides a kind of time diagram of control signal of the electronic equipment for the embodiment of the present invention;
Fig. 3 is the structural schematic diagram of static discharge unit provided in an embodiment of the present invention;
Fig. 4 is the flow diagram of signal processing method provided in an embodiment of the present invention;
Fig. 5 is the structural schematic diagram of the third electronic equipment provided in an embodiment of the present invention.
Specific embodiment
Technical solution of the present invention is further described in detail with reference to the accompanying drawings and specific embodiments of the specification.
Embodiment one:
As shown in Figure 1, the present embodiment provides a kind of electronic equipment, the electronic equipment includes:
Control unit 110;
Port unit 120 is formed between described control unit 110 and is electrically connected;
Static discharge unit 130, comprising:
First end 131 is connect with the port unit 120;
Second end 132 connects Electro-static Driven Comb position;It is the Electro-static Driven Comb represented by solid black point in Fig. 1 Position;
First control terminal 133, is connected with described control unit 110, according to the first control signal of described control unit 110 The connection for the first end 131 and the second end 132 of being turned on or off;
Wherein, when the first end 131 and the second end 132 are connected, discharge generated on the port unit 120 it is quiet Electricity, the electrostatic generated on port unit 120 are discharged by static discharge unit 130 in Electro-static Driven Comb position;The port unit 120 with described control unit 110 carry out electric signal interact when, the first end 131 and the second end 132 disconnection.
Electronic equipment described in the present embodiment can be various types of electronic equipments, specific as included that mobile phone, plate are electric Electronic component in brain, laptop, desktop computer or these electronic equipments.For example, certain structures on circuit board.
Described control unit may include various control chips, for example, microcontroller chip, is also possible to master control in electronic equipment Coremaking piece, such as the central processing unit of computer.
The port unit 120 can be the unit for being able to carry out information exchange, in the present embodiment the port unit 120 It may include the interface unit of USB jack.In this case, USB device can be single by the port unit 120 and the control Member carries out signal interaction.
The electronic equipment further includes static discharge unit 130 in the present embodiment.Here static discharge unit 130 First end 131 is connect with USB unit, and second end 132 is connect with Electro-static Driven Comb position.Here Electro-static Driven Comb position can be ground connection Point or node circuit etc..
When the first end 131 is connected to second end 132, if carrying charge, Jiu Huitong on the port unit 120 It crosses the circuit that first end 131 and second end 132 are formed to discharge, discharges various electricity in the port unit 120 to reach Sub- component, such as parasitic capacitance carries or the electrostatic of accumulation, to avoid various signal transmission and electricity caused by subsequent electrostatic The bad problem of path loss.
Embodiment two:
As shown in Figure 1, the present embodiment provides a kind of electronic equipment, the electronic equipment includes:
Control unit 110;
Port unit 120 is formed between described control unit 110 and is electrically connected;
Static discharge unit 130, comprising:
First end 131 is connect with the port unit 120;
Second end 132 connects Electro-static Driven Comb position;
First control terminal 133, is connected with described control unit 110, according to the first control signal of described control unit 110 The connection for the first end 131 and the second end 132 of being turned on or off;
Wherein, when the first end 131 and the second end 132 are connected, discharge generated on the port unit 120 it is quiet Electricity;When the port unit 120 is interacted with the progress electric signal of described control unit 110, the first end 131 and the second end 132 disconnect.
The electrical connection includes for electrical connection;The electrical connection may include being electrically connected by what cable was formed in the present embodiment It connects, also includes the electrical connection formed by the wiring on circuit board.The present embodiment control unit 110 and port unit 120 it Between be formed with for electrical connection, here for electrical connection can from described control unit 110 to port unit 120 provide working power.
With reference to Fig. 2A, described for being provided with controlled switch unit 140 in electrical connection;
The controlled switch unit 140, comprising:
Second control terminal is connect with described control unit 110, is led according to the second control signal of described control unit 110 On-off is opened described for electrical connection.
When the first end 131 is connected to the second end 132, the controlled switch unit 140 disconnects the power supply Connection;When the first end and the second end disconnect, the controlled switch unit 140 is connected described for electrical connection.
In the present embodiment, the first end 131 is connected to second end 132, the charge on this when port unit 120 It will be discharged by first end 131 and second end 132, therefore introducing controlled switch unit 140 in this embodiment will be in first end 131 with second end 132 when being connected to, in this case disconnect just does not have for electrical connection between control unit 110 and port unit 120 Power supply, avoids the electricity of 110 supply port unit 120 of control unit from being released, reduces the effective consumption of electricity.In first end 131 and second end 132 disconnect when, the controlled switch can be connected it is described for electrical connection, to restore described control unit 110 Power supply to the port unit 120.
The controlled switch unit 140 can correspond to various types of controlled type switches in the present embodiment, such as can be right It should be in the equipment such as crystal metal-oxide-semiconductor or triode.For example, the grid of metal-oxide-semiconductor is second control terminal, reception control unit 110 second control signal, second control signal here can be voltage signal.The source electrode and drain electrode of the controlled switch unit It is connected respectively with control unit 110 and port unit 120, in this case, when control unit 110 is led to the application of the grid of metal-oxide-semiconductor When the pressure that is powered, source electrode and drain electrode conducting, this when, described control unit 110 can be powered to port unit 120. If control unit 110 does not apply the voltage of a conducting voltage or application less than conducting voltage to the grid of metal-oxide-semiconductor, the control Unit 110 processed is powered without normal direction port unit 120, described to be in an off state for electrical connection.
The specific structure of certain controlled switch unit is not limited to metal-oxide-semiconductor and triode mentioned above, can also wrap Include various stacked switches etc..
Embodiment three:
As shown in Figure 1, the present embodiment provides a kind of electronic equipment, the electronic equipment includes:
Control unit 110;
Port unit 120, is formed between described control unit and is electrically connected;
Static discharge unit 130, comprising:
First end 131 is connect with the port unit 120;
Second end 132 connects Electro-static Driven Comb position;
First control terminal 133, is connected with described control unit 110, according to the first control signal of described control unit 110 The connection for the first end 131 and the second end 132 of being turned on or off;
Wherein, when the first end 131 and the second end 132 are connected, discharge generated on the port unit 120 it is quiet Electricity;When the port unit 120 is interacted with the progress electric signal of described control unit 110, the first end 131 and the second end 132 disconnect.
The electrical connection includes for electrical connection;It is described to can be used in described control unit to the port unit for electrical connection Power supply.The electrical connection may include the electrical connection formed by cable in the present embodiment, also include by the cloth on circuit board The electrical connection that line is formed.It is formed between the present embodiment control unit 110 and port unit 120 for electrical connection, confession here Electrical connection can provide working power from described control unit 110 to port unit 120.
With reference to Fig. 2A, described for being provided with controlled switch unit 140 in electrical connection;
The controlled switch unit 140, comprising:
Second control terminal is connect with described control unit 110, is led according to the second control signal of described control unit 110 On-off is opened described for electrical connection.
When the first end 131 is connected to the second end 132, the controlled switch unit 140 disconnects the power supply Connection;When the first end and the second end disconnect, the power supply electrical connection is connected in the controlled switch unit 140.
Described control unit 110, for detected equipment be inserted into the port unit 120 when, when first is specified Interior output controls the second control signal that the controlled switch unit disconnects, and output controls the first end and the second end The first control signal of conducting;
Described control unit 110 was also used to after second specified time, and output controls the controlled switch unit The second control signal of 140 conductings, output control the second control signal that the first end and the second end disconnect.
The first control signal and the second control signal are generated by control unit 110 in the present embodiment , described control unit 110 will be by the first control signal and the second control control is described controlled opens in the present embodiment Close the working sequence of unit 140 and the static discharge unit 130.
Assuming that the first control signal is that logic high, the then first end 131 and second end 132 are connected, it is described First control signal is logic low, then the first end 131 and second end 132 disconnect.Assuming that the second control signal For logic high, then the conducting of controlled switch unit 140 is for electrical connection, if the second control signal is logic low electricity Flat, then it is then the first control signal and second shown in Fig. 2 B that the controlled switch unit 140, which disconnects described for electrical connection, Control the timing diagram of signal.Horizontal axis indicates time shaft in fig. 2b, and before moment point t1, first control signal is logically high electricity Flat and second control signal is logic low, and after moment point t1, first control signal is logic low and the second control Signal processed is logic high.In this case, before moment point t1, static discharge unit 130 is connected, switch control unit 140 disconnect for electrical connection;After the t1 moment, static discharge unit 130 is disconnected, and the conducting of switch control unit 140 is for electrical connection. The pervious period at t1 moment can correspond to first specified time.
First specified time described in the present embodiment and second specified time all can be for previously according to big data systems Meter or mould quasi-definite time.For example, pass a test find the port unit 120 release electrostatic needs when it is 3 seconds a length of, Then the duration of first specified time can be 3 seconds.Here the initial time of the first specified time can be to have detected to set The standby moment for being inserted into port unit 120, the first end of static discharge unit 130 then can be connected in next 3 seconds 131 and second end 132 carry out Electro-static Driven Comb.The design parameters such as the duration of certain first specified time are not limited to above-mentioned act Example.Such as the duration can be the duration values such as 2 seconds, 1 second or 4 seconds.Certainly after first specified time, the port is single Electrostatic in member 120, which has discharged, to be over, and port unit 120 and control can be made this when to carry out to which member 110 normal Communication.At this point it is possible to control static discharge unit 130 first end 131 and second end 132 it is separated, avoid first Caused by conducting between end 131 and second end 132 between port unit 120 and control unit 110 signal decaying, avoid pair The interference of normal interactive signal between port unit 120 and control unit 110.
Obviously, the formation that the present embodiment described control unit 110 passes through the first control signal and second control signal And output, the easy work for controlling controlled switch unit 140 and static discharge unit 130.
As further improvement of this embodiment, the first control signal and the second control signal are general defeated Enter to export GPIO signal.Here GPIO has for General Purpose Input Output signal forms simple, power consumption The features such as low and compatible with the prior art big, it is clear that if the control signal that control unit 110 exports is that GPIO signal can simplify The signal of control unit 110 is formed and control.
Example IV:
As shown in Figure 1, the present embodiment provides a kind of electronic equipment, the electronic equipment includes:
Control unit 110;
Port unit 120, is formed between described control unit and is electrically connected;
Static discharge unit 130, comprising:
First end 131 is connect with the port unit;
Second end 132 connects Electro-static Driven Comb position;
First control terminal 133, is connected with described control unit 110, according to the first control signal of described control unit 110 The connection for the first end 131 and the second end 132 of being turned on or off;
Wherein, when the first end 131 and the second end 132 are connected, discharge generated on the port unit 120 it is quiet Electricity;When the port unit 120 is interacted with the progress electric signal of described control unit 110, the first end 131 and the second end 132 disconnect.
The electrical connection further includes detecting electrical connection;Wherein, described to detect when there is equipment to be inserted into the port unit 120 Survey electrical connection conducting;When not having equipment to be inserted into the port unit 120, the detecting point connection is disconnected;
With reference to Fig. 2A, impedance unit 150 and the confession to the impedance unit 150 power supply are connected in the detecting electrical connection Electric unit 160;
Wherein, when the detecting, which is electrically connected, to be disconnected, said supply unit 160 is by the impedance unit 150 to described Control unit 110 provides first voltage;When the detecting, which is electrically connected, to be connected, said supply unit 160 passes through the impedance list Member 150 provides second voltage to described control unit 110;
The first voltage is not equal to the second voltage.
If there is equipment to be inserted into port unit 120, detecing between the equipment being inserted into, port unit 120 and control unit 110 It surveys electrical connection and is just no longer on open-circuit condition, to turn on;Otherwise detecting electrical connection is just disconnected.In this case, at this Pass through the introducing of impedance unit 150 and power supply unit 160 in embodiment, when can disconnect and be connected in detecting electrical connection, passes through The voltage value that impedance unit 150 is supplied to control unit 110 is different, when the voltage value that control unit 110 detects changes, Or when detecting some voltage value, it is clear that can be easy determine whether present port unit 120 has peripheral hardware insertion.
Here impedance unit 150 can be various electronic components, be chosen as one or more resistance.In the present embodiment It is chosen as the lesser resistance of impedance.Said supply unit 160 can correspond to the various electronic components for being capable of providing electric energy, such as The battery being connected with commercial power interface in electronic equipment can also be other batteries, such as button cell or lithium battery etc. certainly. For example, in order to save electric energy, the resistance that the impedance unit 150 can be 100k or so for a resistance in the present embodiment, institute State the power supply that power supply unit 160 can be capable of providing 3.3V voltage for one.
As further improvement of this embodiment, the grounding pin phase of the detecting electrical connection and the port unit 120 Even.Other in port unit 120 can be interfered by the electric signal that impedance unit 150 exports to avoid power supply unit 160 in this way Electronic component or signal.
In short, the present embodiment described control unit 110 can be easy pass through impedance unit by detecting power supply unit 160 The voltage of 150 input control units 110, it will be able to which easy determines whether present port unit 120 has equipment insertion, structure Simple and realization is easy.
Embodiment five:
As shown in Figure 1, the present embodiment provides a kind of electronic equipment, the electronic equipment includes:
Control unit 110;
Port unit 120, is formed between described control unit and is electrically connected;
Static discharge unit 130, comprising:
First end 131 is connect with the port unit;
Second end 132 connects Electro-static Driven Comb position;
First control terminal 133, is connected with described control unit 110, according to the first control signal of described control unit 110 The connection for the first end 131 and the second end 132 of being turned on or off;
Wherein, when the first end 131 and the second end 132 are connected, discharge generated on the port unit 120 it is quiet Electricity;When the port unit 120 is interacted with the progress electric signal of described control unit 110, the first end 131 and the second end 132 disconnect.
With reference to Fig. 3, the static discharge unit 130, further includes:
Transient voltage suppressor diode TVS 134 is connect with the first end 131 and the second end 132 respectively;
First controlled switching element 135;
First controlled switching element 135 includes the first connecting pin, second connection end and third connecting pin;
Two connecting pins, connect with the TVS13;
Third connecting pin is connected with first control terminal 133, for according to first control terminal 133 received the One control signal conduction disconnects first connecting pin and second connection end.
The conducting and disconnection by between the first connecting pin and second connection end in the present embodiment, it will be able to control Conducting and disconnection between first end and second end.Here TVS have it is at low cost, parasitic capacitance and Electro-static Driven Comb will not be generated The various advantages such as speed is fast.
It is shown in Fig. 3 for based on the present embodiment provides the internal structure chart of give a static discharge unit 130, The first connecting pin and the second connection of TVS and the first controlled switching element are connected on before first end and second end.The third Connecting pin is connect with the first control terminal, is thus connected to control unit 110 and is received first control signal.
Embodiment six:
As shown in Figure 1, the present embodiment provides a kind of electronic equipment, the electronic equipment includes:
Control unit 110;
Port unit 120, is formed between described control unit and is electrically connected;
Static discharge unit 130, comprising:
First end 131 is connect with the port unit;
Second end 132 connects Electro-static Driven Comb position;
First control terminal 133, is connected with described control unit 110, according to the first control signal of described control unit 110 The connection for the first end 131 and the second end 132 of being turned on or off;
Wherein, when the first end 131 and the second end 132 are connected, discharge generated on the port unit 120 it is quiet Electricity;When the port unit 120 is interacted with the progress electric signal of described control unit 110, the first end 131 and the second end 132 disconnect.
The port unit includes usb interface unit;
The usb interface unit includes energization pins and data pin;
Wherein, the energization pins and the data pin are connected with the first end 131.
The port unit 110 is usb interface unit in the present embodiment.The usb interface unit includes energization pins And data pin.Here energization pins be attached in previous embodiment for electrical connection on, receive the confession of control unit 110 Electricity.The data pin can include one or more as shown in Figure 4.D+ and D- in Fig. 4 are that the data of the USB unit are drawn Foot.
The power pins and data pin of the usb interface unit are all connected to the first end 131 in the present embodiment On, it thus can be by the electrostatic on electronic component each in usb interface unit, at least by power pins or data pin One of them is discharged, and may can completely be discharged electrostatic unexpectedly, be reduced the phenomenon of electrostatic remaining.
In short, a kind of electronic equipment is present embodiments provided, and it can be by the introducing of static discharge unit 130, it can be very Electrostatic on good release port unit 120, avoids carrying electrostatic on port unit 120, when peripheral hardware is inserted into port unit 120 Because caused by electrostatic interference the problems such as electrostatic breakdown.
Embodiment seven:
As shown in figure 4, the present embodiment provides a kind of signal processing methods, which comprises
Step S110: whether detection port unit has equipment insertion;
Step S120: if the port unit has equipment insertion, kept within the first specified time the port unit with The disconnection for electrical connection between control unit;And static discharge unit is connected so that the port unit is released by the electrostatic Put unit release electrostatic.
The method is when having detected that equipment is inserted into port unit in the present embodiment, in order to avoid taking on port unit The electrostatic of band leads to the interference of the damage and electrostatic of equipment to subsequent transmission signal, and port can be first kept within the first specified time Power the port of beautiful connection between unit and control unit, so that port unit is first in off position.Electrostatic is connected Connection between releasing unit and port unit, this makes it possible to first discharge on port unit to carry by static discharge unit Electrostatic.
In short, method described in the present embodiment, when having equipment insertion on port unit, conducting port is not single immediately Member and control unit and first remain open, so as not to electrostatic damage electronic component and to signal transmission interference.
Embodiment eight:
As shown in figure 4, the present embodiment provides a kind of signal processing methods, which comprises
Step S110: whether detection port unit has equipment insertion;
Step S120: if the port unit has equipment insertion, kept within the first specified time the port unit with The disconnection for electrical connection between control unit;And static discharge unit is connected so that the port unit is released by the electrostatic Put unit release electrostatic.
As shown in figure 4, the method also includes:
Step S130: after first specified time, conducting is described for electrical connection, disconnects the Electro-static Driven Comb list Member.
After the first specified time, conducting given it is described for electrical connection, then control unit can be carried out to port unit Power supply, such port unit can work, and simultaneously switch off the static discharge unit, this makes it possible to avoid Electro-static Driven Comb Normal signal between the static release circuit interference port unit that unit is formed and control unit interacts.
Embodiment nine:
As shown in figure 4, the present embodiment provides a kind of signal processing methods, which comprises
Step S110: whether detection port unit has equipment insertion;
Step S120: if the port unit has equipment insertion, kept within the first specified time the port unit with The disconnection for electrical connection between control unit;And static discharge unit is connected so that the port unit is released by the electrostatic Put unit release electrostatic.
The step S110 can include:
Whether the voltage that the detecting electrical connection that detection is connected on the port unit provides by first voltage is changed to the Two voltages;Wherein, the first voltage is not equal to the second voltage;
If being changed to second voltage by the first voltage, determine that the port unit has equipment insertion.
Described control unit also will test the port unit connection detecting electrical connection to control unit in the present embodiment Whether the voltage of offer by first voltage is altered to second voltage, if being changed, may be exactly inserted by peripheral hardware it is described Port unit, thus the easy port unit that detected has equipment insertion, and static discharge unit is timely connected, with Realize Electro-static Driven Comb.
A specific example is provided below in conjunction with above-mentioned any embodiment:
As shown in figure 5, this example provides a kind of electronic equipment, which includes:
Usb interface unit, control chip, metal-oxide-semiconductor, resistance, 3.3V power supply and the TVS of improvement.
Usb interface unit includes USB-5V pin, D+ pin, D- pin and GND pin.The USB-5V pin is power supply Pin, for providing working power for usb interface unit.The D+ pin and D- pin are the data pin of usb interface unit. The GND pin is grounding pin.
The usb interface unit is established between control chip respectively by above-mentioned pin and is electrically connected.
The metal-oxide-semiconductor be located at USB-5V pin with control chip for being electrically connected on.The grid of metal-oxide-semiconductor and control chip phase Even, control chip can provide voltage to the grid of metal-oxide-semiconductor.The drain electrode of the metal-oxide-semiconductor and source electrode are connected to described in electrical connection. Metal-oxide-semiconductor can control the conducting and disconnection between drain and gate according to grid from the control received voltage of chip.
TVS after improvement increases a logic switch in the inside of existing TVS, which can correspond to aforementioned The first controlled switching element in embodiment.The logic switch receives the control of control chip, according to the control of control chip, leads On-off opens TVS.When TVS conducting, the charge on usb interface unit can be input to grounding point GND by TVS.When TVS is disconnected When, the charge on usb interface unit cannot be input to GND by TVS.Therefore the TVS after the improvement can be used in USB interface list Electro-static Driven Comb in member.
It in this example further include resistance, which connect with a 3.3V power supply, which can be used for resistance Voltage is provided.If there is equipment to be inserted into usb interface unit, the circuit that resistance is connected forms conducting circuit, this when is electric Voltage in resistance is pulled low.If being inserted into usb interface unit without equipment, the circuit that resistance is connected is disconnected, resistance input 3.3V is equally likely to the voltage of control chip, it is clear that this when, what control chip can be inputted by detection resistance to it Voltage value has determined whether that equipment is inserted into usb interface unit, to form the control of TVS and metal-oxide-semiconductor after control improvement Signal controls the Electro-static Driven Comb of usb interface unit, and the information exchange between usb interface unit.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it Its mode is realized.Apparatus embodiments described above are merely indicative, for example, the division of the unit, only A kind of logical function partition, there may be another division manner in actual implementation, such as: multiple units or components can combine, or It is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed each composition portion Mutual coupling or direct-coupling or communication connection is divided to can be through some interfaces, the INDIRECT COUPLING of equipment or unit Or communication connection, it can be electrical, mechanical or other forms.
Above-mentioned unit as illustrated by the separation member, which can be or may not be, to be physically separated, aobvious as unit The component shown can be or may not be physical unit, it can and it is in one place, it may be distributed over multiple network lists In member;Some or all of units can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing module, it can also To be each unit individually as a unit, can also be integrated in one unit with two or more units;It is above-mentioned Integrated unit both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program When being executed, step including the steps of the foregoing method embodiments is executed;And storage medium above-mentioned include: movable storage device, it is read-only Memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or The various media that can store program code such as person's CD.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (9)

1. a kind of electronic equipment, the electronic equipment include:
Control unit;
Port unit is formed between described control unit and is electrically connected, wherein the electrical connection includes for electrical connection;It is described It can be used in described control unit for electrical connection to power to the port unit;Described for being provided with controlled switch in electrical connection Unit;
Static discharge unit, comprising:
First end is connect with the port unit;
Second end connects Electro-static Driven Comb position;
First control terminal, is connected with described control unit, for leading on-off according to the first control signal of described control unit Open the connection of the first end and the second end;
Described control unit, for exporting control within the first specified time when having detected that peripheral hardware is inserted into the port unit The second control signal that the controlled switch unit disconnects is made, output controls the first of the first end and second end conducting Control signal;After first specified time, output controls the second control signal of the controlled switch unit conducting, defeated The second control signal that the first end and the second end disconnect is controlled out;
Wherein, when the first end is connected to the second end, the electrostatic generated on the port unit is discharged;The port is single When member is interacted with described control unit progress electric signal, the first end and the second end are disconnected.
2. electronic equipment according to claim 1, which is characterized in that
The controlled switch unit includes:
Second control terminal, connect with described control unit, is turned on or off institute according to the second control signal of described control unit It states for electrical connection;
Wherein, when the first end is connected to the second end, the controlled switch unit disconnects described for electrical connection;Work as institute When stating first end and second end disconnection, the controlled switch unit conducting is described for electrical connection.
3. electronic equipment according to claim 1, which is characterized in that
The first control signal and the second control signal are universal input output GPIO signal.
4. electronic equipment according to any one of claims 1 to 3, which is characterized in that
The electrical connection further includes detecting electrical connection;Wherein, when there is the outer standby insertion port unit, the detecting electrical connection Conducting;When not having equipment to be inserted into the port unit, the detecting point connection is disconnected;
The power supply unit for being connected with impedance unit in the detecting electrical connection and powering to the impedance unit;
Wherein, when the detecting, which is electrically connected, to be disconnected, said supply unit is mentioned by the impedance unit to described control unit For first voltage;When the detecting, which is electrically connected, to be connected, said supply unit is by the impedance unit to described control unit Second voltage is provided;
The first voltage is not equal to the second voltage.
5. electronic equipment according to claim 4, which is characterized in that
The detecting electrical connection is connected with the grounding pin of the port unit.
6. electronic equipment according to any one of claims 1 to 3, which is characterized in that
The static discharge unit, comprising:
Transient voltage suppressor diode TVS is connect with the first end and the second end respectively;
First controlled switching element;
First controlled switching element includes the first connecting pin, second connection end and third connecting pin;
First connecting pin and second connection end are connected with the TVS;
Third connecting pin is connected with first control terminal, for according to the received first control signal of the first control terminal Be turned on or off first connecting pin and second connection end.
7. electronic equipment according to any one of claims 1 to 3, which is characterized in that
The port unit includes usb interface unit;
The usb interface unit includes energization pins and data pin;
Wherein, the energization pins and the data pin are connected with the first end.
8. a kind of signal processing method, which comprises
Whether detection port unit has equipment insertion;
If the port unit has outer standby insertion, kept between the port unit and control unit in the first specified time For the disconnection of electrical connection;And static discharge unit is connected so that the port unit is quiet by static discharge unit release Electricity;
After first specified time, conducting is described for electrical connection, disconnects the static discharge unit.
9. according to the method described in claim 8, it is characterized in that,
Whether the detection port unit has equipment insertion, comprising:
Detection be connected on the port unit detecting electrical connection provide voltage whether by first voltage be changed to second electricity Pressure;Wherein, the first voltage is not equal to the second voltage;
If being changed to second voltage by the first voltage, determine that the port unit has equipment insertion.
CN201510964076.0A 2015-12-21 2015-12-21 Electronic equipment and signal processing method Active CN105630722B (en)

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CN101789984A (en) * 2009-12-28 2010-07-28 宇龙计算机通信科技(深圳)有限公司 SIM card interface circuit and mobile phone

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CN101789984A (en) * 2009-12-28 2010-07-28 宇龙计算机通信科技(深圳)有限公司 SIM card interface circuit and mobile phone

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