CN114857069A - Fan smelting tool plate - Google Patents
Fan smelting tool plate Download PDFInfo
- Publication number
- CN114857069A CN114857069A CN202210589015.0A CN202210589015A CN114857069A CN 114857069 A CN114857069 A CN 114857069A CN 202210589015 A CN202210589015 A CN 202210589015A CN 114857069 A CN114857069 A CN 114857069A
- Authority
- CN
- China
- Prior art keywords
- fan
- connector
- power supply
- rotating speed
- control chip
- 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.)
- Pending
Links
- 238000003723 Smelting Methods 0.000 title description 3
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 230000033228 biological regulation Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 238000007726 management method Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 3
- 230000015654 memory Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 108010028984 3-isopropylmalate dehydratase Proteins 0.000 description 2
- 101100190527 Arabidopsis thaliana PIN5 gene Proteins 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 101100190528 Arabidopsis thaliana PIN6 gene Proteins 0.000 description 1
- 101100190529 Arabidopsis thaliana PIN7 gene Proteins 0.000 description 1
- 101100190530 Arabidopsis thaliana PIN8 gene Proteins 0.000 description 1
- 108010059419 NIMA-Interacting Peptidylprolyl Isomerase Proteins 0.000 description 1
- 101150087393 PIN3 gene Proteins 0.000 description 1
- 101150011456 PIN8 gene Proteins 0.000 description 1
- 108010037490 Peptidyl-Prolyl Cis-Trans Isomerase NIMA-Interacting 4 Proteins 0.000 description 1
- 102100026114 Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1 Human genes 0.000 description 1
- 102100031653 Peptidyl-prolyl cis-trans isomerase NIMA-interacting 4 Human genes 0.000 description 1
- 102000007315 Telomeric Repeat Binding Protein 1 Human genes 0.000 description 1
- 108010033711 Telomeric Repeat Binding Protein 1 Proteins 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention belongs to the technical field of server testing, and particularly provides a fan jig plate, which comprises: the control chip is connected with the dial switch and is also connected with the fan connector; the control chip sends fan rotating speed control to the fan connector according to a control signal received from the dial switch so as to adjust the rotating speed of a fan connected to the fan connector; the power supply module comprises a power supply management chip, a mainboard power supply connector and a server power supply connector, wherein the mainboard power supply connector is used for connecting a mainboard, the server power supply connector is used for connecting a server power supply, and the power supply management chip converts the output level of the mainboard power supply connector or the server power supply connector into the level required by the control chip. The heat dissipation strategy of the invention can be flexibly regulated and controlled without being controlled by a mainboard, thereby reducing noise pollution, and the invention adopts a mode of double power connectors, thereby ensuring normal use under the condition of no available server power interface.
Description
Technical Field
The invention belongs to the technical field of server testing, and particularly relates to a fan jig plate.
Background
With the rapid development of internet technology, the demand of each internet company on high-performance servers is rapidly increased, and the great improvement of the calculation density of the whole machine has higher requirements on the heat dissipation of a server system. In the whole machine, a systematic and sound heat dissipation system is the key for guaranteeing the operation of the server. However, in the stage of project development, development engineers usually use bare boards for testing and debug in laboratories, and the heat dissipation requirement is increasingly increased along with the increase of CPU power consumption.
Existing test schemes use an onboard fan directly, and a BMC and a CPLD are usually designed on a server motherboard (for distinction, the CPLD on the motherboard is denoted as CPLD _ M). The BMC is provided with a fan management module, can adjust the rotating speed of the fan through PWM, and monitors the rotating speed of the fan through a TCAH signal to realize dynamic regulation and control of the fan. In the existing mainstream design, a main board and a fan board are usually designed in a split board manner, an independent fan board can be formed, an independent CPLD (CPLD of the fan board is CPLD _ F) is designed on the fan board, interaction with the CPLD of the main board is realized through I2C or other buses, in-place information and TACH information of a fan are transmitted to the CPLD of the main board, and PWM information transmitted from the main board is acquired, so that the fan regulation and control of the fan board are realized.
Due to the limitation of a heat dissipation strategy, when the bare board is used for testing, the BMC controls the rotating speed of the fan to be higher, and noise pollution is caused.
Disclosure of Invention
Aiming at the problem of noise pollution in the prior art, the invention provides a fan jig plate to solve the technical problem.
The invention provides a fan smelting tool plate, comprising:
the control chip is connected with the dial switch and is also connected with the fan connector; the control chip sends fan rotating speed control to the fan connector according to a control signal received from the dial switch so as to adjust the rotating speed of a fan connected to the fan connector;
the power supply module comprises a power supply management chip, a mainboard power supply connector and a server power supply connector, wherein the mainboard power supply connector is used for connecting a mainboard, the server power supply connector is used for connecting a server power supply, and the power supply management chip converts the output level of the mainboard power supply connector or the server power supply connector into the level required by the control chip.
Furthermore, the control chip is a complex programmable logic device.
Furthermore, the main board power connector and the server power connector supply power in an alternative mode.
Furthermore, the server power connector is preferentially used for connecting the server power supply, and if no idle server power socket exists, the mainboard power connector is used for connecting the mainboard.
Furthermore, the fan connector is a magnetic connector, and the magnetic connector is matched with the fan magnetic connector at the fan end.
Furthermore, the magnetic connector comprises a 12V power supply contact group, a grounding contact group, a rotating speed signal contact group, a pulse width modulation signal contact and a detection signal contact.
Furthermore, the 12V power supply contact group, the grounding contact group and the rotating speed signal contact group all comprise two contacts.
Furthermore, the contacts of the magnetic connector are all of circular metal structures.
Furthermore, the control chip comprises a register, wherein signal combinations of various dial switches and fan rotating speed adjusting strategies corresponding to each signal combination are stored in the register; the fan rotating speed adjusting strategy comprises a plurality of target fan connectors and a target rotating speed corresponding to each target fan connector; the signal combination is a signal combination generated by a plurality of dial switches under different states;
after receiving a control signal of a dial switch, the control chip analyzes a target signal combination from the control signal and calls a fan rotating speed regulating strategy corresponding to the target signal combination; the control chip respectively collects the actual fan rotating speed through the target fan connectors according to the fan rotating speed adjusting strategy, and produces a fan rotating speed adjusting value based on the difference value between the target rotating speed of each target fan connector and the actual fan rotating speed; and the control chip sends the fan rotating speed regulating value to the corresponding fan through the corresponding target fan connector.
The fan jig plate has the advantages that different rotating speed regulation and control of the fan can be realized without modifying a CPLD code by controlling the state of the dial switch so as to adapt to actual heat dissipation requirements, a heat dissipation strategy can be flexibly regulated and controlled without being controlled by a main board, noise pollution is reduced, a mode of a double power supply connector is adopted, normal use can be guaranteed under the condition that no available server power supply interface exists, and usability of the fan jig plate is greatly improved.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a fan tool plate according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a magnetic connector of a fan tool plate according to an embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The following English abbreviations related to the present invention are given as complete English expressions and Chinese translations:
the BMC executes a remote Management controller of the server, and is a substrate Management controller. The method can perform operations such as firmware upgrading, machine equipment checking and the like on the machine in a state that the machine is not started. Fully implementing IPMI functionality in a BMC requires a powerful 16-bit or 32-bit microcontroller as well as RAM for data storage, flash memory and firmware for non-volatile data storage, providing basic remote manageability in terms of secure remote restart, secure re-power-up, LAN alerts and system health monitoring. In addition to the basic IPMI function and system operation monitoring function, the mBMC enables selection and protection of BIOS flash devices by storing the previous BIOS using one of 2 flash memories. For example, when the system cannot be started after the remote BIOS is upgraded, the remote administrator can switch back to the BIOS image that worked before to start the system. Once BIOS is upgraded, BIOS image can be locked to prevent virus from invading it.
The I2C bus is a simple, bi-directional two-wire synchronous serial bus developed by Philips. It requires only two wires to transfer information between devices connected to the bus. The master device is used to initiate the bus to transfer data and to generate a clock to open up the devices that are transferring, when any addressed device is considered a slave device. If the host wants to send data to the slave device, the host addresses the slave device first, then actively sends the data to the slave device, and finally the host terminates the data transmission; the slave device is first addressed by the master device if the host is to receive data from the slave device, then the host receives the data sent by the slave device, and finally the host terminates the receiving process. The host is responsible for generating the timing clock and terminating the data transfer.
CPLD: a complete Programmable logic device; a complex programmable logic device. The CPLD adopts programming technologies such as CMOS EPROM, EEPROM, flash memory, SRAM and the like, thereby forming a programmable logic device with high density, high speed and low power consumption.
GPIO: general-purpose input/output, or General-purpose input/output, for short.
MB: main Board of Main Board
FB: fan Board, Fan Board
PSU: the invention discloses a Power Supply Unit, which is a Power Supply module and is called a server Power Supply.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a specific structure of a fan jig plate in the present embodiment includes:
the control chip is connected with the dial switch and is also connected with FAN connectors (FAN CONN0 and FAN CONN 1); the control chip sends fan rotating speed control to the fan connector according to the control signal received from the dial switch so as to adjust the rotating speed of the fan connected to the fan connector; the power supply module comprises a power management chip (VR), a mainboard power connector used for connecting the mainboard and a server power connector (PSU connector) used for connecting the server power supply, and the power management chip converts the output level of the mainboard power connector or the server power connector into the level required by the control chip. The control chip adopts a complex programmable logic device, namely CPLD _ F in FIG. 1.
The mainboard power connector and the server power connector can independently supply power, and the mainboard power connector and the server power connector are not in working states at the same time. The CPLD can monitor and control the rotating speed of the fan through the GPIO, the three dial switches form (2: 0), namely 8 rotating speed control combinations, and the different rotating speed control of the fan can be realized without modifying the CPLD codes by controlling the state of the three-position dial switch so as to adapt to the actual heat dissipation requirement.
In order to reduce the pressure of the mainboard, the power supply priority of the server power connector is higher than that of the mainboard power connector, namely, the server power connector is preferentially used for connecting the server power supply, and if no idle server power socket exists, the mainboard power connector is used for connecting the mainboard.
Existing fan connectors are typically in the form of pins that are connected to the fan via extension wires. The cable is more when external fan is more, can lead to experimental environment vision dirty in disorder poor, and the cable is mixed together with the power cord in a jumble, takes place danger easily or the mistake bumps. In order to avoid the danger caused by the fact that too many cables connected with the fan through the fan connector are mixed with the power line and the accidental collision happens, the fan connector adopts a magnetic connector which is matched with the fan magnetic connector at the fan end. The magnetic suction connector is structurally shown in FIG. 2 and comprises a 12V power supply contact group (PIN1: P12V and PIN2: P12V), a ground contact group (PIN3: GND and PIN4: GND), a rotating speed signal contact group (PIN6: TACH0 and PIN5: TACH1), a pulse width modulation signal contact (PIN8: PWM) and a detection signal contact (PIN7: PRSNT #). The 12V power supply contact group, the grounding contact group and the rotating speed signal contact group all comprise two contacts. The contacts of the magnetic connector are all round metal structures.
Dial switches on the jig plate can flexibly increase the number of the fans according to the number of the fans, and independent regulation and control of the multiple groups of fans are realized. If 4 fans of 3 dial switch control, the dial switch also can increase to 6 in a flexible way, and the fan increases to 8 and divide into two sets of, can realize regional fan rotational speed regulation and control like this.
The control chip comprises a register, wherein signal combinations of various dial switches and a fan rotating speed adjusting strategy corresponding to each signal combination are stored in the register; the fan rotating speed adjusting strategy comprises a plurality of target fan connectors and a target rotating speed corresponding to each target fan connector; the signal combination is a signal combination generated by a plurality of dial switches under different states; after receiving a control signal of the dial switch, the control chip analyzes a target signal combination from the control signal and calls a fan rotating speed adjusting strategy corresponding to the target signal combination; the control chip respectively collects actual fan rotating speeds through the target fan connectors according to a fan rotating speed adjusting strategy, and produces fan rotating speed adjusting values based on the difference value between the target rotating speeds of the target fan connectors and the actual fan rotating speeds; and the control chip sends the fan rotating speed regulating value to the corresponding fan through the corresponding target fan connector.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A fan tool plate, comprising:
the control chip is connected with the dial switch and is also connected with the fan connector; the control chip sends fan rotating speed control to the fan connector according to a control signal received from the dial switch so as to adjust the rotating speed of a fan connected to the fan connector;
the power supply module comprises a power supply management chip, a mainboard power supply connector and a server power supply connector, wherein the mainboard power supply connector is used for connecting a mainboard, the server power supply connector is used for connecting a server power supply, and the power supply management chip converts the output level of the mainboard power supply connector or the server power supply connector into the level required by the control chip.
2. The fan tool plate of claim 1, wherein the control chip is a complex programmable logic device.
3. The fan tool plate of claim 1, wherein the motherboard power connectors and the server power connectors are powered in an alternative manner.
4. The fan tool board of claim 3, wherein the server power connectors are preferably used to connect to server power, and the motherboard power connectors are used to connect to the motherboard if there is no spare server power socket.
5. The fan tool plate of claim 1, wherein the fan connector is a magnetic connector that mates with a fan magnetic connector at a fan end.
6. The fan tool plate of claim 5, wherein the magnetically attractive connector comprises a 12V power contact set, a ground contact set, a speed signal contact set, a pulse width modulation signal contact, and a test signal contact.
7. The fan tool plate according to claim 6, wherein the 12V power contact set, the ground contact set, and the speed signal contact set each include two contacts.
8. The fan tool plate of claim 7, wherein the contacts of the magnetically attractive connector are all circular metal structures.
9. The fan tool plate according to claim 1, wherein the control chip comprises a register, and a plurality of signal combinations of dial switches and a fan speed regulation strategy corresponding to each signal combination are stored in the register; the fan rotating speed adjusting strategy comprises a plurality of target fan connectors and a target rotating speed corresponding to each target fan connector; the signal combination is a signal combination generated by a plurality of dial switches under different states;
after receiving a control signal of a dial switch, the control chip analyzes a target signal combination from the control signal and calls a fan rotating speed regulating strategy corresponding to the target signal combination; the control chip respectively collects the actual fan rotating speed through the target fan connectors according to the fan rotating speed adjusting strategy, and produces a fan rotating speed adjusting value based on the difference value between the target rotating speed of each target fan connector and the actual fan rotating speed; and the control chip sends the fan rotating speed regulating value to the corresponding fan through the corresponding target fan connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589015.0A CN114857069A (en) | 2022-05-27 | 2022-05-27 | Fan smelting tool plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589015.0A CN114857069A (en) | 2022-05-27 | 2022-05-27 | Fan smelting tool plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114857069A true CN114857069A (en) | 2022-08-05 |
Family
ID=82642027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210589015.0A Pending CN114857069A (en) | 2022-05-27 | 2022-05-27 | Fan smelting tool plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114857069A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203039727U (en) * | 2012-12-14 | 2013-07-03 | 广州杰赛科技股份有限公司 | Cloud terminal with multiple power supply modes and cloud computing system |
| CN104019049A (en) * | 2013-03-01 | 2014-09-03 | 鸿富锦精密电子(天津)有限公司 | Fan rotation speed testing device |
| CN207051798U (en) * | 2017-03-14 | 2018-02-27 | 郑州云海信息技术有限公司 | A kind of high power server power supply plate |
| CN213905707U (en) * | 2020-12-24 | 2021-08-06 | 深圳市烨光璇电子科技有限公司 | Backlight module and colorful light-emitting accessory |
-
2022
- 2022-05-27 CN CN202210589015.0A patent/CN114857069A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203039727U (en) * | 2012-12-14 | 2013-07-03 | 广州杰赛科技股份有限公司 | Cloud terminal with multiple power supply modes and cloud computing system |
| CN104019049A (en) * | 2013-03-01 | 2014-09-03 | 鸿富锦精密电子(天津)有限公司 | Fan rotation speed testing device |
| CN207051798U (en) * | 2017-03-14 | 2018-02-27 | 郑州云海信息技术有限公司 | A kind of high power server power supply plate |
| CN213905707U (en) * | 2020-12-24 | 2021-08-06 | 深圳市烨光璇电子科技有限公司 | Backlight module and colorful light-emitting accessory |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8522064B2 (en) | Server system having mainboards | |
| EP3261420A1 (en) | Virtual chassis management controller | |
| CN101350737B (en) | Ipmi systems and electronic apparatus and memory sharing method | |
| US9645954B2 (en) | Embedded microcontroller and buses | |
| EP3035187B1 (en) | Hard disk and management method | |
| CN104054064B (en) | Flexible port configuration based on interface coupling | |
| EP3585062B1 (en) | Network system for identifying cable connection and method for authenticating cable id | |
| US11308002B2 (en) | Systems and methods for detecting expected user intervention across multiple blades during a keyboard, video, and mouse (KVM) session | |
| US7962735B2 (en) | Servo device auto-booted upon power supply recovery and method thereof | |
| CN213276459U (en) | Server mainboard and server | |
| CN1873586A (en) | Computer system and method of controlling power consumption in the computer system | |
| CN218824636U (en) | Power supply detection device for server hard disk backboard | |
| CN116627729A (en) | External connection cable, external connection cable in-place detection device, startup self-checking method and system | |
| CN114857069A (en) | Fan smelting tool plate | |
| US20220394872A1 (en) | Server | |
| CN213365511U (en) | Mainboard and server | |
| CN104679123A (en) | Mainboard and data burning method thereof | |
| CN110321263B (en) | Hard disk monitoring system | |
| US20090185559A1 (en) | Integration module for universal serial bus | |
| CN112115091A (en) | Server and PCIE system thereof | |
| CN218273375U (en) | AST 2500-based BMC management module and server system | |
| CN219960598U (en) | Remote management device | |
| CN115422110B (en) | Port configuration method of electronic equipment and PCIE Switch chip | |
| CN215729734U (en) | Core board and server | |
| CN219552900U (en) | BMC card and computer equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |