CN201311486Y - Detection device for terminal power - Google Patents
Detection device for terminal power Download PDFInfo
- Publication number
- CN201311486Y CN201311486Y CN 200820177078 CN200820177078U CN201311486Y CN 201311486 Y CN201311486 Y CN 201311486Y CN 200820177078 CN200820177078 CN 200820177078 CN 200820177078 U CN200820177078 U CN 200820177078U CN 201311486 Y CN201311486 Y CN 201311486Y
- Authority
- CN
- China
- Prior art keywords
- terminal power
- voltage
- charging pin
- socket
- resistance
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a detection device for a terminal power and relates to electronic products. The detection device can solve the problem that detection devices for terminal powers of the prior art have complex structures and inconvenient detection. The detection device for the terminal power comprises at least one socket matched with the terminal power, a first load resistor, of which the both ends are connected with a positive polarity interface and a negative polarity interface of the socket respectively, and a voltage detection unit, which is connected with the positive polarity interface and the negative polarity interface of the socket, and used for detecting whether the output voltage of the socket is within the preset range or not. The detection device for the terminal power is suitable for detecting various terminal powers.
Description
Technical field
The utility model relates to electronic product, relates in particular to the terminal power detector.
Background technology
Along with the continuous development of the communication technology, popularizing of portable terminal is more and more wider.Every terminal is all wanted the standard configuration charge power supply, because charge power supply is subjected to the influence of Disturbance in Power Net and internal capacitance, thereby is failure rate and the higher accessory of repair rate in the end product, and annual repair and return rate can reach about 0.3%.And the equipment of most of portable terminal agent point or maintenace point is comparatively simple, sometimes can only detect rechargeable battery by easy multimeter, thereby bring difficulty to judging whether charge power supply is damaged, just even do not make a decision sometimes and directly return terminal manufacturer as trouble power.Reprocessing has a big chunk product can continue to use in the product, thereby brings transportation to wait the increase of cost for terminal manufacturer.
For the detection of the employed charge power supply of terminal, need to adopt special checkout equipment usually at present.Be illustrated in figure 1 as charge power supply pick-up unit synoptic diagram of the prior art.At first needing provides AC (interchange) regulated power supply 101 to charge power supply 102, connect special electronic load 104 by output adapter 103 then, add multimeter 105 and oscillograph 106 again, output voltage and the current conditions of charge power supply 102 under different loading conditions judged, thereby determined whether charge power supply 102 is normal.
State in realization in the testing process of terminal charge power supply, the inventor finds that there are the following problems at least in the prior art:
The testing process complexity, it is longer that the maintenance personal finishes the time that charge power supply detects;
Detecting instrument is had relatively high expectations, and has only professional power supply producer just to be equipped with AC regulated power supply and special electronic load, and not every maintenance service point all has this kind equipment;
And to carry large-scale instrument when going out on-the-spot orientation problem for the maintenance personal be very difficult.
The utility model content
Embodiment of the present utility model provides a kind of terminal power detector, can solve the pick-up unit complex structure of terminal power supply in the prior art, the problem of detection inconvenience.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of terminal power detector comprises:
At least one socket, described socket and terminal power supply coupling;
First pull-up resistor, the two ends of described first pull-up resistor link to each other with the negative polarity interface with the positive polarity interface of described socket respectively; And
Voltage detection unit links to each other with the negative polarity interface with the positive polarity interface of described socket, and whether the voltage that is used to detect described socket output is in preset range.
On the basis of such scheme, described socket also comprises the connector with described terminal power supply coupling; Described connector comprises positive polarity charging pin and negative polarity charging pin, and described positive polarity charging pin and negative polarity charging pin are connected to the positive polarity interface and the negative polarity interface of respective socket.
Described terminal power detector can also comprise: at least one second pull-up resistor, described second pull-up resistor are connected to the positive polarity interface and the negative polarity interface of described socket by switch.
The resistance of wherein said second pull-up resistor and first pull-up resistor can be identical.
In an embodiment of the present invention, described voltage detection unit is a voltage comparator, is connected to the positive polarity interface and the negative polarity interface of described socket, and whether the voltage that is used for more described socket output is in preset range.
Described terminal power detector can also comprise: indicating device, be connected in the circuit of described voltage comparator, and be used for when the voltage of described socket output is in preset range luminous.
Can comprise at voltage comparator described in the described terminal power detector further: first protective resistance that is connected and first voltage stabilizing diode, one end of described first protective resistance links to each other with described positive polarity charging pin, the other end of described first protective resistance links to each other with the negative pole of described first voltage stabilizing diode, and the positive pole of described first voltage stabilizing diode links to each other with described negative polarity charging pin;
By the bleeder circuit that first resistance and second resistance are formed, described bleeder circuit links to each other with negative polarity charging pin with described positive polarity charging pin, and the common port of described first resistance and second resistance extremely links to each other with the reference of described first voltage stabilizing diode;
Triode, the collector of described triode links to each other with the common port of described first resistance and second resistance, and the emitter of described triode links to each other with described negative polarity charging pin, and base stage links to each other with described negative polarity charging pin by electric capacity;
Second voltage stabilizing diode that is connected and second protective resistance; the negative pole of described second voltage stabilizing diode is connected to described positive polarity charging pin; the positive pole of described second voltage stabilizing diode is connected to the base stage of described triode, and described second protective resistance links to each other with negative polarity charging pin.
Voltage comparator can also comprise described in the described terminal power detector: the 3rd protective resistance is connected between the common port of base stage of described positive polarity charging pin and second protective resistance and described triode.
Described terminal power detector can also comprise indicating device, is connected between the negative pole and described positive polarity charging pin of described first voltage stabilizing diode, is used for when the voltage of described socket output is in preset range luminous.
The indicating device of the above is can light emitting diode on the basis of above-mentioned base case.
The terminal power detector that the utility model embodiment provides, by the socket of at least one and terminal power supply coupling is set, first pull-up resistor and the voltage detection unit that link to each other with the negative polarity interface with the positive polarity interface of described socket, whether whether the voltage that described voltage detection unit is used to detect described socket output is in preset range, can detect the terminal power supply fast, easily and damage.
Description of drawings
Fig. 1 is a prior art terminal power detector synoptic diagram;
Fig. 2 is the utility model one embodiment terminal power detector synoptic diagram;
Fig. 3 is another embodiment terminal power detector synoptic diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment terminal power detector is described in detail.Should be clear and definite, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope that the utility model is protected.
As shown in Figure 2, the utility model embodiment terminal power detector comprises: at least one socket 201, first pull-up resistor 202 and voltage detection unit 203.
The two ends of described first pull-up resistor 202 link to each other with negative polarity interface "-" with the positive polarity interface "+" of described socket 201 respectively.
Wherein, first pull-up resistor in the present embodiment also can be connected in series by a plurality of resistance.
The terminal power detector that the utility model embodiment provides, by the socket of at least one and terminal power supply coupling is set, first pull-up resistor and the voltage detection unit that link to each other with the negative polarity interface with the positive polarity interface of described socket, whether whether the voltage that described voltage detection unit is used to detect described socket output is in preset range, can detect the terminal power supply fast, easily and damage.
As shown in Figure 3, a preferred embodiment terminal power detector of the present utility model comprises:
Three supply sockets 301,301 ' and 301 ", resistance R 1, R2 and R3, K switch 1 and K2, voltage comparator circuit and LED light D3.Wherein, whether the terminal supply voltage that voltage comparator is used to detect supply socket output is in preset range, and the instructed voltage scope that lights by LED light.
Three supply sockets 301,301 shown in Fig. 3 ' " be applicable to the common portable terminal power supply in market of the different trades mark respectively with 301.Have one two pin connector in the supply socket 301, wherein 1 is negative polarity charging pin, and 2 are positive polarity charging pin; Supply socket 301 ' in have one 20 pin connector, wherein positive polarity charging pin is 15,16 and 17 pins of drawing, negative polarity charging pin is 9 and 10 pins of drawing; Supply socket 301 " in have one five pin connector, wherein 1 is positive polarity charging pin, 5 are the negative polarity pin that charges.Because three supply sockets 301,301 ' with 301 " connector of the inside is that the terminal of the different trades mark is used, so present embodiment can be applicable to the detection of the terminal power supply of three different trades mark at least.Each is organized positive polarity charging pin and all is connected with the negative polarity interface with the positive polarity interface of described socket with negative polarity charging pin, so respectively organizes the positive polarity pin that charges a common port is arranged, and each organizes the negative polarity pin that charges also a common port.
Certainly, the utility model embodiment can also be provided with more supply socket.
The resistance of resistance R 1, R2 and R3 is 17.5 Ω, and R1 is connected between positive polarity charging pin and the negative polarity charging pin, and R2 and R3 are connected between positive polarity charging pin and the negative polarity charging pin by K switch 1 and K2.When detecting the higher terminal power supply of load capacity, K switch 1 and K2 are opened.For the input power supply of 5V, load current is about the terminal power supply of 300～400mA, and K switch 1 and K2 close during the sense terminals power supply; Be about the terminal power supply of 700～800mA for load current, need open K switch 1 during the sense terminals power supply; For the bigger terminal power supply of load current, need open K switch 1 and K2 during the sense terminals power supply.
Wherein, the resistance R in the present embodiment 1, R2 and R3 also can be connected in series by a plurality of resistance.
Each circuit component of voltage comparator circuit and the connected mode of LED lamp are specially:
First route resistance R 4, LED lamp and voltage stabilizing diode D1 composition that is connected, and the two ends of branch road are connected respectively to positive polarity charging pin and negative polarity charging pin.One end of resistance R 4 is connected with positive polarity charging pin, and the other end links to each other with the positive pole of LED lamp, and the negative pole of LED lamp D3 is connected with the negative pole of voltage stabilizing diode D1, and the positive pole of voltage stabilizing diode TL431 links to each other with negative polarity charging pin.
Second route resistance R 5 and R6 connect to form bleeder circuit, and this branch road is connected between positive polarity charging pin and the negative polarity charging pin equally, and the common port of resistance R 5 and R6 extremely links to each other with the reference of voltage stabilizing diode D1.
The 3rd voltage stabilizing diode D2, resistance R 7, R8 and the capacitor C composition that route is connected, the negative pole of voltage stabilizing diode D2 is connected to positive polarity charging pin, and an end of capacitor C links to each other with resistance R 7, and the other end of capacitor C links to each other with negative polarity charging pin; Resistance R 8 is connected in parallel on the two ends of capacitor C; The common port that resistance R 8 is connected with capacitor C is connected with an end of resistance R 7 and the base stage of triode Q1, and the collector of triode Q1 is connected to the common port of resistance R 5 and R6, and the emitter of triode Q1 is connected to negative polarity charging pin.
Introduce principle of work of the present utility model below.
The terminal power supply that needs are detected inserts civil power, and is connected on the socket that mates with described terminal power supply, thereby also is connected to positive polarity charging pin and negative polarity charging pin on the connector that mates with described terminal power supply.The load capacity size of the terminal power supply of Jian Ceing selects whether to open K switch 1 and K2 as required.
Under the prerequisite of the load capacity size of correct reflexless terminal power supply, the voltage swing of sense terminals power supply output.For example, when the voltage that it has been generally acknowledged that terminal power supply output was between about 4.5V～5.6V, the terminal power supply can charge normal to end cell, thereby to be prerequisite with this voltage range be provided with each component parameters of voltage comparator circuit.Wherein, R4, R7 are 470 Ω, and R5 is 1.75K, and R6 is 2K, and R8 is 1.8K, and the model of voltage stabilizing diode D1 is TL431, and the model of voltage stabilizing diode D2 is ZD1, and triode Q1 is 2N3904.Wherein, the voltage breakdown of voltage stabilizing diode TL431 is about 2.5V, and the voltage breakdown of voltage stabilizing diode ZD1 is about 5.6V.
If less than 4.5V, then the reference utmost point of voltage stabilizing diode TL431 and the voltage between the positive pole is less than 2.5V from the voltage of positive and negative polarity charging valve pin output, thereby voltage stabilizing diode TL431 ends, and then the LED lamp is not luminous.
If from the voltage range of positive and negative polarity charging valve pin output is 4.5V～5.6V, the reference utmost point of voltage stabilizing diode TL431 and the voltage between the positive pole is greater than 2.5V, the then breakdown conducting of voltage stabilizing diode TL431, and then the LED lamp is luminous.
If greater than 5.6V, then voltage stabilizing diode ZD1 is breakdown from the voltage of positive and negative polarity charging valve pin output, thus with triode Q1 conducting, thereby the collector of triode Q1 forms electronegative potential, causes voltage stabilizing diode TL431 to end, then the LED lamp is not luminous.
Thereby the terminal power supply that expression is detected if the LED lamp is luminous does not damage, and the terminal power supply that expression is detected if the LED lamp is not luminous damages.
Mandatory declaration be, more than the voltage range that limited only be the cited scopes of one embodiment of the present of invention, can select different voltage ranges to realize the present invention in actual applications fully.The parameter that each element in the voltage comparator circuit therefore specifically can voltage range as required be set.
The utility model embodiment is by being provided with at least one socket, at least one pull-up resistor, and the voltage comparator circuit that can judge voltage range, whether whether the voltage range of coming the indicating terminal power supply to export when the load by lumination of light emitting diode is within the preset range, damage thereby realized detecting quickly and easily the terminal power supply.The utility model is provided with the supply socket of coupling different model terminal, thereby can detect multiple different terminal power supply.The access number of the utility model pull-up resistor can change according to the load capacity of terminal power supply, thereby can detect the terminal power supply of different loads ability.The parameter of each element of the utility model can change according to actual needs, thereby the utility model can be applied to other testing circuit in order to the instructed voltage scope.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by described protection domain with claim.
Claims (10)
1, a kind of terminal power detector is characterized in that, comprising:
At least one socket, described socket and terminal power supply coupling;
First pull-up resistor, the two ends of described first pull-up resistor link to each other with the negative polarity interface with the positive polarity interface of described socket respectively; And
Voltage detection unit links to each other with the negative polarity interface with the positive polarity interface of described socket, and whether the voltage that is used to detect described socket output is in preset range.
2, terminal power detector according to claim 1 is characterized in that, described socket also comprises the connector with described terminal power supply coupling;
Described connector comprises positive polarity charging pin and negative polarity charging pin, and described positive polarity charging pin and negative polarity charging pin are connected to the positive polarity interface and the negative polarity interface of respective socket.
3, terminal power detector according to claim 1 is characterized in that, also comprises:
At least one second pull-up resistor, described second pull-up resistor are connected to the positive polarity interface and the negative polarity interface of described socket by switch.
4, terminal power detector according to claim 3 is characterized in that, described second pull-up resistor is identical with the resistance of first pull-up resistor.
5, terminal power detector according to claim 1, it is characterized in that, described voltage detection unit is a voltage comparator, is connected to the positive polarity interface and the negative polarity interface of described socket, and whether the voltage that is used for more described socket output is in preset range.
6, terminal power detector according to claim 1 is characterized in that, also comprises:
Indicating device is connected in the circuit of described voltage comparator, is used for when the voltage of described socket output is in preset range luminous.
7, terminal power detector according to claim 5 is characterized in that, described voltage comparator comprises:
First protective resistance that is connected and first voltage stabilizing diode, one end of described first protective resistance links to each other with described positive polarity charging pin, the other end of described first protective resistance links to each other with the negative pole of described first voltage stabilizing diode, and the positive pole of described first voltage stabilizing diode links to each other with described negative polarity charging pin;
By the bleeder circuit that first resistance and second resistance are formed, described bleeder circuit links to each other with negative polarity charging pin with described positive polarity charging pin, and the common port of described first resistance and second resistance extremely links to each other with the reference of described first voltage stabilizing diode;
Triode, the collector of described triode links to each other with the common port of described first resistance and second resistance, and the emitter of described triode links to each other with described negative polarity charging pin, and base stage links to each other with described negative polarity charging pin by electric capacity;
Second voltage stabilizing diode that is connected and second protective resistance; the negative pole of described second voltage stabilizing diode is connected to described positive polarity charging pin; the positive pole of described second voltage stabilizing diode is connected to the base stage of described triode, and described second protective resistance links to each other with negative polarity charging pin.
8, terminal power detector according to claim 7 is characterized in that, described voltage comparator also comprises:
The 3rd protective resistance is connected between the common port of base stage of described positive polarity charging pin and second protective resistance and described triode.
9, terminal power detector according to claim 7, it is characterized in that, also comprise indicating device, be connected between the negative pole and described positive polarity charging pin of described first voltage stabilizing diode, be used for when the voltage of described socket output is in preset range luminous.
10, according to claim 6 or 9 described terminal power detectors, it is characterized in that described indicating device is a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820177078 CN201311486Y (en) | 2008-11-05 | 2008-11-05 | Detection device for terminal power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820177078 CN201311486Y (en) | 2008-11-05 | 2008-11-05 | Detection device for terminal power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201311486Y true CN201311486Y (en) | 2009-09-16 |
Family
ID=41108744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820177078 Expired - Lifetime CN201311486Y (en) | 2008-11-05 | 2008-11-05 | Detection device for terminal power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201311486Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102831044A (en) * | 2011-06-15 | 2012-12-19 | 鸿富锦精密工业（深圳）有限公司 | Control system and method of power state indicating lamp |
| CN103176098A (en) * | 2011-12-21 | 2013-06-26 | 株式会社甲进 | False connection detecting system for connector |
| CN104198955A (en) * | 2014-09-13 | 2014-12-10 | 安徽鑫龙电器股份有限公司 | Power module detection circuit |
| CN104931895A (en) * | 2015-05-25 | 2015-09-23 | 常州大学 | Load test device for rail vehicle power panels |
| CN105245755A (en) * | 2014-07-11 | 2016-01-13 | 山东新北洋信息技术股份有限公司 | Medium conveying control method, medium conveying device and sheet-fed scanning device |
| CN106093798A (en) * | 2016-08-22 | 2016-11-09 | 深圳市凯瑞兹电子科技有限公司 | The detection method of a kind of lithium battery load capacity and device |
| CN107807336A (en) * | 2017-12-20 | 2018-03-16 | 惠州市鑫晖源科技有限公司 | Power supply electrical detection device |
| CN109946627A (en) * | 2019-03-13 | 2019-06-28 | 苏州浪潮智能科技有限公司 | A kind of reference power supply CRPS function detection device |
| CN111901193A (en) * | 2020-07-16 | 2020-11-06 | 苏州伏特通信科技有限公司 | Communication transmission equipment fault detection system |
-
2008
- 2008-11-05 CN CN 200820177078 patent/CN201311486Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102831044A (en) * | 2011-06-15 | 2012-12-19 | 鸿富锦精密工业（深圳）有限公司 | Control system and method of power state indicating lamp |
| CN103176098A (en) * | 2011-12-21 | 2013-06-26 | 株式会社甲进 | False connection detecting system for connector |
| CN103176098B (en) * | 2011-12-21 | 2015-12-23 | 株式会社甲进 | Connector mistake junction detection system |
| CN105245755A (en) * | 2014-07-11 | 2016-01-13 | 山东新北洋信息技术股份有限公司 | Medium conveying control method, medium conveying device and sheet-fed scanning device |
| CN104198955A (en) * | 2014-09-13 | 2014-12-10 | 安徽鑫龙电器股份有限公司 | Power module detection circuit |
| CN104931895A (en) * | 2015-05-25 | 2015-09-23 | 常州大学 | Load test device for rail vehicle power panels |
| CN106093798A (en) * | 2016-08-22 | 2016-11-09 | 深圳市凯瑞兹电子科技有限公司 | The detection method of a kind of lithium battery load capacity and device |
| CN106093798B (en) * | 2016-08-22 | 2019-09-10 | 深圳市凯瑞兹电子科技有限公司 | A kind of detection method and device of lithium battery load capacity |
| CN107807336A (en) * | 2017-12-20 | 2018-03-16 | 惠州市鑫晖源科技有限公司 | Power supply electrical detection device |
| CN109946627A (en) * | 2019-03-13 | 2019-06-28 | 苏州浪潮智能科技有限公司 | A kind of reference power supply CRPS function detection device |
| CN111901193A (en) * | 2020-07-16 | 2020-11-06 | 苏州伏特通信科技有限公司 | Communication transmission equipment fault detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201311486Y (en) | Detection device for terminal power | |
| CN101144851B (en) | Power supply device checking device | |
| CN206990730U (en) | A kind of battery of electric vehicle positive-negative connected and detection circuit is not connect | |
| US9176178B2 (en) | Battery simulation circuit | |
| CN202153654U (en) | System for detecting open circuit cell joint in battery | |
| CN103545882A (en) | Battery in-situ test method and device and battery charge system | |
| CN207490555U (en) | A kind of charging control circuit | |
| CN201819982U (en) | Power supply detection device | |
| CN105676054A (en) | Cable reversal connection and short-circuit detection circuit | |
| CN106299180B (en) | The combination of electric tool and battery pack | |
| CN102253346B (en) | Method and device for automatically testing battery charging | |
| CN103472404A (en) | Grounding detection circuit | |
| CN201096873Y (en) | Dry battery voltage detection device based on voltage method | |
| CN103344904B (en) | A kind of for checking simulation lithium battery method of testing and the circuit of product charging circuit | |
| CN209417264U (en) | Accumulator monitoring module | |
| CN210838007U (en) | Battery equalization circuit and power supply device | |
| CN208190282U (en) | A kind of protection system for the straight charging circuit of battery | |
| CN204374273U (en) | A kind of handheld digital secondary pressure plate measuring instrument | |
| CN106872840A (en) | Voltage acquisition line short test circuit and equipment | |
| CN203368051U (en) | Charging control circuit and television | |
| CN102135583B (en) | Automatic detecting device for detecting short circuit unusualness of internal circuit and shell of optical module | |
| CN204651614U (en) | A kind of data wire with charging instruction | |
| CN205384340U (en) | Cable joins conversely and short circuit detection circuitry | |
| CN205159603U (en) | Take USB -C's extension type connector | |
| CN207743738U (en) | Charger suitable for multiple battery charging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUAWEI DEVICE CO., LTD. Free format text: FORMER NAME: SHENZHEN HUAWEI TECHNOLOGY CO. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No. Patentee after: HUAWEI DEVICE Co.,Ltd. Address before: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No. Patentee before: Huawei Device Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180222 Address after: California, USA Patentee after: Global innovation polymerization LLC Address before: California, USA Patentee before: Tanous Co. Effective date of registration: 20180222 Address after: California, USA Patentee after: Tanous Co. Address before: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No. Patentee before: HUAWEI DEVICE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090916 |