CN100504701C - Speed controller of CPU fan - Google Patents
Speed controller of CPU fan Download PDFInfo
- Publication number
- CN100504701C CN100504701C CNB2005100730236A CN200510073023A CN100504701C CN 100504701 C CN100504701 C CN 100504701C CN B2005100730236 A CNB2005100730236 A CN B2005100730236A CN 200510073023 A CN200510073023 A CN 200510073023A CN 100504701 C CN100504701 C CN 100504701C
- Authority
- CN
- China
- Prior art keywords
- voltage
- output
- branch road
- cpu
- dividing potential
- 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.)
- Active
Links
Images
Landscapes
- Control Of Positive-Displacement Air Blowers (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
A speed control device of CPU fan consists of voltage- dividing unit and voltage regulation unit. It is featured as carrying out voltage- dividing process on reference voltage by voltage- dividing unit for providing step- varied sub voltage to voltage regulation unit, providing output voltage to power supply end of CPU fan for controlling rotary speed of CPU fan by voltage regulation unit and comparing voltage signal from CPU temperature transducer with outputted step sub voltage by voltage regulation unit for regulating circuit resistance value as per comparison result to output different voltage value.
Description
Technical field
The present invention relates to the computer to dissipate heat technology, relate in particular to a kind of device of the rotating speed of cpu fan being controlled according to the temperature of central processing unit (CPU).
Background technology
Most important pyrotoxin is CPU in the computing machine.Along with improving constantly of CPU processing speed, the heat of its generation also increases.At present common CPU power consumption is up to 130W, and its surface temperature can reach more than 100 degree.Because the increase of heat can have influence on the stability of CPU, therefore, generally adopts fan that CPU is dispelled the heat at present.And in order to reduce noise as far as possible, present fan can carry out the rotating speed adjustment according to the temperature of CPU, makes when CPU high temperature, and fan is with high-speed rotation, and when CPU low temperature, and fan to be slowly running, thereby reduces noise.
The schematic structure diagram of Fig. 1 for according to cpu temperature the rotating speed of cpu fan being controlled in the prior art.As shown in Figure 1, the temperature of CPU is that promptly temp diode feeds back by inner hotness (THERMAL) diode of CPU, by magnitude of voltage of positive and negative two ends output.The THERMAL diode is a cpu temperature sensor, and the different magnitudes of voltage of its two ends output are corresponding different CPU temperature respectively.Fig. 2 is the graph of a relation of THERMAL diode both end voltage value and cpu temperature.As shown in Figure 2, cpu temperature is high more, and THERMAL diode both end voltage value is low more.The voltage signal at THERMAL diode two ends is input in the I/O chip (SUPER I/O); This voltage signal converts digital signal to through the modulus signal converter (ADC) of SUPER I/O inside; This data-signal is input among the BIOS again; Store the corresponding relation of different digital range of signal and temperature value among the BIOS in advance, and the corresponding relation of temperature value and voltage duty cycle value; BIOS searches its corresponding temperature value according to the digital signal of input, searches corresponding voltage duty cycle value according to temperature value again, and the value of the voltage duty cycle that finds is input to output voltage dutycycle unit in the SUPERI/O chip; The voltage duty cycle signal of corresponding value is exported in output voltage dutycycle unit to the field effect transistor circuit according to the value of the voltage duty cycle of input.The field effect transistor circuit is used to adjust supply voltage, adjusts the turn-on frequency of the top tube and down tube of field effect transistor according to described voltage duty cycle signal, to the different magnitude of voltage of cpu fan output, therefore can control the rotating speed of cpu fan.
But there is following shortcoming in above-mentioned prior art:
1, control accuracy is not high.Because there is design difference in the SUPER I/O chip of different vendor, may there be precision difference in SUPER I/O when reading the cpu temperature value, the magnitude of voltage of adding the reflection temperature of CPU output at first converts digital signal to, convert temperature value again to, be converted into duty cycle signals again, utilize the voltage of duty cycle signals control fan, so conversion of signals often, error increases, and has further reduced control accuracy.
2, in the control mode implementation, need the bios program support, because there is the power consumption difference in different CPU, therefore its temperature is also different with the ratio of its THERMAL diode both end voltage, therefore for different CPU, need the different THERMAL diode both end voltage value of BIOS storage and the corresponding relation of cpu temperature value; Cause whenever changing a CPU like this, for fear of the control mistake, the data among the BIOS all must correspondingly be revised, thereby cause the BIOS of modification too much, cause the waste of resource.
Summary of the invention
In view of this, fundamental purpose of the present invention provides a kind of revolution speed control device of cpu fan, to improve according to cpu temperature cpu fan is carried out the precision that rotating speed is controlled, and reduces the waste to computer resource simultaneously.
To achieve these goals, main technical schemes of the present invention is as follows:
A kind of revolution speed control device of cpu fan, this device comprises: partial pressure unit and voltage-adjusting unit; Wherein: described partial pressure unit is used for reference voltage is carried out the component voltage of dividing potential drop to change step by step to voltage-adjusting unit output; Described voltage-adjusting unit is the bleeder circuit of being made up of voltage-regulating circuit and divider resistance, and this bleeder circuit carries out dividing potential drop to supply voltage, and its dividing point is to cpu fan feeder ear output voltage, with the rotating speed of control cpu fan; Described voltage-regulating circuit is used to receive the voltage signal of cpu temperature sensor output, and compare with the component voltage step by step of partial pressure unit output, adjust the resistance value of this voltage-regulating circuit according to different comparative results, with the different magnitude of voltage of dividing point output of control voltage-adjusting unit.
Preferably, described partial pressure unit comprises multistage dividing potential drop branch road parallel with one another, respectively described reference voltage is carried out dividing potential drop, the different magnitude of voltage of dividing point output of every grade of dividing potential drop branch road, and the magnitude of voltage of dividing potential drop branch road output changes step by step.
Different dividing potential drop branch roads can be composed in series by the divider resistance of different resistances, also can be composed in series by different dividing potential drop diodes.
Described voltage-regulating circuit comprises multilevel voltage adjustment branch road, receives the component voltage of the dividing potential drop branch road output of corresponding level in the bleeder circuit step by step; Every step voltage is adjusted branch road and is comprised comparer, switching device and resistance; Two input ends of described comparer receive the component voltage of described dividing potential drop branch road output and the voltage of cpu temperature sensor output respectively, and output terminal is connected with the control end of switching device; Described switching device is connected with resistance, one end ground connection of resistance, and next stage voltage is adjusted the series circuit of branch road and the resistance composition parallel circuit that upper level voltage is adjusted branch road, the switching device of highest voltage-regulating circuit is connected with the divider resistance of described voltage-adjusting unit, and tie point is a dividing point; The switching device of each step voltage adjustment branch road carries out conducting or shutoff according to the signal of comparer output, adjusts the resistance of branch road to change whole voltage, at the different voltage of dividing point output of described voltage-adjusting unit.
The electrode input end of comparer receives the component voltage of described dividing potential drop branch road output, and negative input receives the voltage of described cpu temperature sensor output; The electrode input end voltage of comparer is during greater than negative input voltage, and output high level signal, the electrode input end voltage of comparer be during less than negative input voltage, the output low level signal.
The component voltage of dividing potential drop branch road output reduces with the rising of dividing potential drop branch road rank in the described partial pressure unit, and the rank of voltage adjustment branch road is low more in voltage-adjusting unit, and the partial pressure value of its partial pressure unit that receives is high more.
Connect between the negative input of comparer and the output terminal and be used to carry out the resistance of current limliting.
The switching device of described voltage-regulating circuit is a triode, and the base stage of this triode is connected with the output terminal of described comparer.
The switching device of described voltage-regulating circuit also can be field effect transistor, and the grid of this field effect transistor is connected with the output terminal of described comparer.
Because partial pressure unit and voltage-adjusting unit that utilization of the present invention is made up of ball bearing made using are controlled as direct reference signal the magnitude of voltage of cpu temperature sensor output to the voltage of cpu fan, and then according to the rotating speed of cpu temperature control cpu fan, promptly the cpu fan rotating speed is raise along with temperature raises, therefore the present invention has reduced the conversion times of cpu temperature sensor output voltage signal, reduce error, improved the precision of the cpu fan rotating speed being controlled according to cpu temperature.
In addition,, do not need the participation of SUPER I/O and bios program, saved the resource of computing machine, reduced the cost of computing machine because device of the present invention is made up of ball bearing made using.
Description of drawings
The schematic structure diagram of Fig. 1 for according to cpu temperature the rotating speed of cpu fan being controlled in the prior art;
Fig. 2 is the graph of a relation of THERMAL diode both end voltage value and cpu temperature;
Fig. 3 is the structured flowchart of the revolution speed control device of cpu fan of the present invention;
Fig. 4 is a kind of enforcement circuit diagram of the revolution speed control device of cpu fan of the present invention;
Fig. 5 is the control design sketch to the cpu fan rotating speed of the foregoing description.
Embodiment
The present invention will be described below in conjunction with the drawings and specific embodiments.
Fig. 3 is the structured flowchart of the revolution speed control device of cpu fan of the present invention.As shown in Figure 3, the revolution speed control device of this fan comprises: partial pressure unit and voltage-adjusting unit.Wherein:
Partial pressure unit comprises multistage dividing potential drop branch road, is used for reference voltage is carried out the component voltage of dividing potential drop to change step by step to voltage-adjusting unit output.The concrete quantity of dividing potential drop branch road is corresponding with the control hierarchy of cpu fan rotating speed, if the rotating speed rank of cpu fan is 3,3 grades of bleeder circuits is arranged then.The voltage that each road bleeder circuit is told is different.As known technology, the concrete composition of bleeder circuit can have multiple mode, for example, can utilize two resistance to be composed in series, and the tie point of two resistance is a dividing point; Also can be made up of two diode in series, the tie point of two diodes is a dividing point.The dividing point output voltage of each bar bleeder circuit is in described voltage-regulating circuit.
Voltage-adjusting unit is the bleeder circuit of being made up of voltage-regulating circuit and divider resistance, and this bleeder circuit carries out dividing potential drop to supply voltage, and its dividing point is to cpu fan feeder ear output voltage, with the rotating speed of control cpu fan; Described voltage-regulating circuit is used to receive the voltage signal of cpu temperature sensor output, and compare with the component voltage step by step of partial pressure unit output, adjust the resistance value of this voltage-regulating circuit according to different comparative results, with the different magnitude of voltage of dividing point output of control voltage-adjusting unit.
Fig. 4 is a kind of enforcement circuit diagram of the revolution speed control device of cpu fan of the present invention.As shown in Figure 4, in this embodiment, voltage-regulating circuit adopts 3 grades of dividing potential drop branch roads and voltage to adjust the branch road composition, and the may command cpu fan is with 3 kinds of different rotational speed.Control cpu fan if desired with more kinds of rotational speed, then can increase similar multistage dividing potential drop branch road and voltage adjustment branch road and get final product according to circuit shown in Figure 4.
As shown in Figure 4, present embodiment passes through resistance R 1 ground connection with the negative pole of THERMAL diode D1, the positive pole of THERMAL diode D1 is outputed in the negative input of comparer Q1, Q2, Q3, the electrode input end of comparer Q1, Q2, Q3 inserts respectively by resistance R 2 and R3, R4 and R5, R6 and R7 reference voltage voltage after partial value, and reference voltage herein can be made as 1V.Resistance R 2, R3 form first order dividing potential drop branch road, and resistance R 4, R5 form second level dividing potential drop branch road, and resistance R 6, R7 form third level dividing potential drop branch road, and these three dividing potential drop branch roads are formed partial pressure unit.The component voltage maximum between resistance R 2, the R3 wherein, the component voltage between resistance R 4, the R5 is taken second place, the component voltage minimum between resistance R 6, the R7.The output terminal of comparer Q1, Q2, Q3 is connected with the base stage of triode U1, U2, U3 respectively.Resistance R 8, R9, R10 are respectively the feedback resistance of comparer Q1, Q2, Q3, are used for current limliting.Comparer Q1, Q2, Q3, triode U1, U2, U3 and resistance R 12, R13, R14, R15, R16 form voltage-regulating circuit.Wherein: comparer Q1, triode U1 and R16 form first order voltage and adjust branch road, and triode U1 connects with resistance R 16, R16 one end ground connection; Comparer Q2, triode U2 and resistance R 14, R15 form second level voltage and adjust branch road, and triode U2 connects with resistance R 14, R15, R15 one end ground connection; Comparer Q3, triode U3 and resistance R 12, R13 form third level voltage and adjust branch road, and triode U3 connects with resistance R 12, R13, R13 one end ground connection.The resistance R 15 that series circuit that triode U1, resistance R 16 are formed in the first order voltage adjustment branch road and second level voltage are adjusted in the branch road is in parallel; The resistance R 13 that series circuit that triode U2, resistance R 14, R15 form in the second level voltage adjustment branch road and third level voltage are adjusted in the branch road is in parallel; Third level voltage is adjusted the series circuit that triode U3, resistance R 12 and R13 form in the branch road and is formed bleeder circuit with the R11 polyphone again, and so that the 12V power supply is carried out dividing potential drop, the dividing point output voltage of this bleeder circuit is given the cpu fan feeder ear.First, second, third voltage is adjusted branch road and is formed voltage-regulating circuit, and voltage-regulating circuit and divider resistance R11 form voltage-adjusting unit.
When CPU moved, the THERMAL diode D1 of CPU inside exported different voltage along with the rising of temperature.When cpu temperature is low, the voltage of THERMAL diode D1 output is higher, comparer Q1, Q2, the negative pole of Q3 all compares with the voltage of positive pole, the voltage of negative pole is all greater than cathode voltage, this moment comparer Q1, Q2, Q3 is output as low level, triode U1, U2, the equal conducting of U3, at this moment, three other voltages of level are adjusted the equal conducting work of branch road, the supply voltage of cpu fan is first, second, third level voltage is adjusted the voltage that branch road is adjusted, be R11, R12, R13, R14, R15, the voltage that behind the R16 constant resistance series and parallel 12V dividing potential drop is drawn, this voltage is relatively low, so cpu fan is with relative low-speed running.
If the CPU thermal value strengthens, voltage between the THERMAL diode D1 decreases at this moment, if the voltage of this THERMAL diode D1 was lower than the cathode voltage of comparer Q1 and was higher than comparer Q2 this moment, during the cathode voltage of Q3, comparer Q1 output this moment high level, comparer Q2, the Q3 output low level, therefore triode U1 ends, triode U2, the U3 conducting, this moment, first order voltage was adjusted the branch road inefficacy, the supply voltage of cpu fan is second, third level voltage is adjusted the voltage that branch road is adjusted, be R11, R12, R13, R14, the voltage that after the R15 connection in series-parallel 12V dividing potential drop is obtained, this moment, the cpu fan supply voltage raise, and the rotating speed of cpu fan increases.
If the CPU thermal value continues to strengthen, voltage between the THERMAL diode D1 further reduces, if the voltage of this THERMAL diode D1 is lower than comparer Q1, the cathode voltage of Q2 and when being higher than the cathode voltage of comparer Q3, comparer Q1 then, Q2 exports high level, comparer Q3 output low level, so triode U1, U2 ends, triode U3 conducting, this moment first, second level voltage is adjusted branch road and was lost efficacy, the supply voltage of cpu fan is adjusted the voltage that branch road is adjusted for third level voltage, be R11, R12, the voltage that after the R13 connection in series-parallel 12V dividing potential drop is obtained, this moment, the cpu fan supply voltage continued to raise, and the rotating speed of cpu fan increases.
If it is very low that the voltage between the THERMAL diode D1 drops to, the voltage of comparer Q1, Q2, Q3 negative pole is less than cathode voltage, comparer Q1, Q2, Q3 are output as high level at this moment, triode U1, U2, U3 all end, first, second, third step voltage adjustment this moment branch road all lost efficacy, the supply voltage of cpu fan is a 12V voltage, and the cpu fan rotating speed is the highest.
The foregoing description only discloses tertiary voltage and has adjusted branch road, according to the disclosed scheme of the foregoing description, also can correspondingly increase multistage dividing potential drop branch road and voltage again and adjust branch road, can realize, multiple other rotating speed of level of corresponding control cpu fan for multiple different CPU temperature.
Above-mentioned triode U1, U2, U3 also can replace with field effect transistor, and the output terminal of described comparer is connected with the grid of field effect transistor.Described bleeder circuit also can be replaced by the diode bleeder circuit.
Fig. 5 is the control design sketch to the cpu fan rotating speed of the foregoing description.As shown in Figure 5, cpu temperature diode voltage value raises with temperature and reduces, and the cpu fan rotating speed reduces with cpu temperature diode voltage value and raises step by step, therefore make the rotating speed of cpu fan raise step by step along with the rising of temperature, so the present invention can reach the good cooling purpose equally.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
1, a kind of revolution speed control device of cpu fan is characterized in that, this device comprises: partial pressure unit and voltage-adjusting unit; Wherein: described partial pressure unit is used for reference voltage is carried out the component voltage of dividing potential drop to change step by step to voltage-adjusting unit output; Described voltage-adjusting unit is the bleeder circuit of being made up of voltage-regulating circuit and divider resistance, and this bleeder circuit carries out dividing potential drop to supply voltage, and its dividing point is to cpu fan feeder ear output voltage, with the rotating speed of control cpu fan; Described voltage-regulating circuit is used to receive the voltage signal of cpu temperature sensor output, and compare with the component voltage step by step of partial pressure unit output, adjust the resistance value of this voltage-regulating circuit according to different comparative results, with the different magnitude of voltage of dividing point output of control voltage-adjusting unit.
2, the revolution speed control device of cpu fan according to claim 1, it is characterized in that, described partial pressure unit comprises multistage dividing potential drop branch road parallel with one another, respectively described reference voltage is carried out dividing potential drop, the different magnitude of voltage of dividing point output of every grade of dividing potential drop branch road, and the magnitude of voltage of dividing potential drop branch road output changes step by step.
3, the revolution speed control device of cpu fan according to claim 2 is characterized in that, the divider resistance that different dividing potential drops is propped up the different resistances of route is composed in series.
4, the revolution speed control device of cpu fan according to claim 2 is characterized in that, different dividing potential drops is propped up the different dividing potential drop diode of route and is composed in series.
5, the revolution speed control device of cpu fan according to claim 2 is characterized in that, described voltage-regulating circuit comprises multilevel voltage adjustment branch road, receives the component voltage of the dividing potential drop branch road output of corresponding level in the bleeder circuit step by step; Every step voltage is adjusted branch road and is comprised comparer, switching device and resistance; Two input ends of described comparer receive the component voltage of described dividing potential drop branch road output and the voltage of cpu temperature sensor output respectively, and output terminal is connected with the control end of switching device; Described switching device is connected with resistance, one end ground connection of resistance, and next stage voltage is adjusted the series circuit of branch road and the resistance composition parallel circuit that upper level voltage is adjusted branch road, the switching device of highest voltage-regulating circuit is connected with the divider resistance of described voltage-adjusting unit, and tie point is a dividing point; The switching device of each step voltage adjustment branch road carries out conducting or shutoff according to the signal of comparer output, adjusts the resistance of branch road to change whole voltage, at the different voltage of dividing point output of described voltage-adjusting unit.
6, the revolution speed control device of cpu fan according to claim 5 is characterized in that, the electrode input end of comparer receives the component voltage of described dividing potential drop branch road output, and negative input receives the voltage of described cpu temperature sensor output; The electrode input end voltage of comparer is during greater than negative input voltage, and output high level signal, the electrode input end voltage of comparer be during less than negative input voltage, the output low level signal.
7, the revolution speed control device of cpu fan according to claim 6, it is characterized in that, the component voltage of dividing potential drop branch road output reduces with the rising of dividing potential drop branch road rank in the described partial pressure unit, and the rank of voltage adjustment branch road is low more in voltage-adjusting unit, and the partial pressure value of its partial pressure unit that receives is high more.
8, the revolution speed control device of cpu fan according to claim 5 is characterized in that, connecting between the negative input of comparer and the output terminal is used to carry out the resistance of current limliting.
9, the revolution speed control device of cpu fan according to claim 5 is characterized in that, the switching device of described voltage-regulating circuit is a triode, and the base stage of this triode is connected with the output terminal of described comparer.
10, the revolution speed control device of cpu fan according to claim 5 is characterized in that, the switching device of described voltage-regulating circuit is a field effect transistor, and the grid of this field effect transistor is connected with the output terminal of described comparer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100730236A CN100504701C (en) | 2005-05-27 | 2005-05-27 | Speed controller of CPU fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100730236A CN100504701C (en) | 2005-05-27 | 2005-05-27 | Speed controller of CPU fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1869851A CN1869851A (en) | 2006-11-29 |
| CN100504701C true CN100504701C (en) | 2009-06-24 |
Family
ID=37443529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100730236A Active CN100504701C (en) | 2005-05-27 | 2005-05-27 | Speed controller of CPU fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100504701C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8159160B2 (en) | 2008-12-30 | 2012-04-17 | International Business Machines Corporation | Apparatus, system, and method for improved fan control in a power supply |
| CN101865151B (en) * | 2010-06-13 | 2012-09-05 | 北京星网锐捷网络技术有限公司 | Method and device for controlling rotation speed of fan and network equipment |
| CN112181010B (en) * | 2020-09-23 | 2022-03-01 | 普联国际有限公司 | A temperature control method, device, storage medium and router for a router |
| CN114382716B (en) * | 2020-10-22 | 2023-11-21 | 广东美的环境电器制造有限公司 | Control circuit, control method, device, equipment and medium of electric fan |
-
2005
- 2005-05-27 CN CNB2005100730236A patent/CN100504701C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1869851A (en) | 2006-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100446402C (en) | Circuit for starting DC fan | |
| CN100377491C (en) | DC fan self-starting circuit | |
| CN100479306C (en) | Device for optimizing charge pump of integrated circuit and method therefor | |
| CN1617432A (en) | Power supply apparatus capable of supplying a stable converted voltage | |
| CN103807192A (en) | Computer fan control circuit | |
| CN101075143A (en) | Low-voltage linear adjuster | |
| CN104578719B (en) | Semiconductor device and semiconductor module | |
| CN112468124B (en) | IGBT driving device and IGBT | |
| CN101985946A (en) | Fan speed-regulation control circuit as well as control method and electronic device thereof | |
| CN102097923B (en) | Driving circuit with zero turn-off current and driving method thereof | |
| CN100504701C (en) | Speed controller of CPU fan | |
| CN201215989Y (en) | Voltage stabilizing circuit and television set having the voltage stabilizing circuit | |
| US7936202B2 (en) | Method and apparatus for robust mode selection with low power consumption | |
| CN103715971A (en) | Motor control device and air conditioner | |
| CN207801793U (en) | A kind of motor speed control device | |
| CN115411697A (en) | An undervoltage protection device | |
| CN102736717B (en) | A kind of wide temperature control circuit and mainboard and the method controlling mainboard width temperature | |
| CN107589775A (en) | A kind of reference voltage source of positive temperature coefficient current compensation | |
| CN101399517B (en) | Linear fan speed characteristic curve design circuit | |
| CN102136795B (en) | Adjustable driving voltage source and method for adjusting driving voltage | |
| CN107465400B (en) | Relaxation oscillator with adjustable temperature coefficient | |
| CN207427106U (en) | A kind of relaxation oscillator of temperature coefficient adjustable | |
| CN109787558A (en) | Pierce circuit and its method for repairing and regulating | |
| CN100386705C (en) | Linear Regulator Circuit with Adjustable Power Distribution | |
| CN203289310U (en) | Control circuit and switch converter |
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 |