CN101237229A - Detection control circuit and electronic device - Google Patents
Detection control circuit and electronic device Download PDFInfo
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- CN101237229A CN101237229A CNA2008100260107A CN200810026010A CN101237229A CN 101237229 A CN101237229 A CN 101237229A CN A2008100260107 A CNA2008100260107 A CN A2008100260107A CN 200810026010 A CN200810026010 A CN 200810026010A CN 101237229 A CN101237229 A CN 101237229A
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Abstract
The embodiment of the invention discloses a detection and control circuit which is connected with a serial access consisting of a power supply line and an impelling line and is used for controlling the cutoff of the serial access when detecting that no current exists in the serial access, and is used for controlling the serial access to be conducted when detecting that current exists in the serial access, detection and control circuit controls to conduct the serial access. The embodiment of the invention also discloses an electronic device. The invention is adopted to save the space, intelligentize the output and cutoff of the impelling line and realize the plug and play of the detection and control circuit and is simple and feasible.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of detection control circuit and a kind of electronic installation.
Background technology
At present, advance (boost) circuit to be difficult to that (Integrated Circuit IC) realizes that output turn-offs, and is to realize the output shutoff by increasing by a manual switch mostly by integrated circuit.
Prior art provides a kind of shutoff circuit, and this shutoff link tester is crossed hardware switch the boost circuit is turn-offed, but this shutoff circuit has not only taken big quantity space, and the hardware switch that is adopted is intelligent inadequately, and can't realize the plug and play of this shutoff circuit.
Summary of the invention
Embodiment of the invention technical problem to be solved is, a kind of detection control circuit and a kind of electronic installation are provided, can realize that this detection control circuit links to each other with the series via that supply line, propelling circuit constitute, when being used to detect on the described series via no current, described series via is turn-offed in control; Detect when on the described series via electric current being arranged, the described series via of control conducting, thus save the space, it is intelligent that the output that advances circuit is turn-offed, plug and play.
In order to solve the problems of the technologies described above, the embodiment of the invention has proposed a kind of detection control circuit, the series via that this detects control circuit and supply line, advance circuit to constitute links to each other, when being used to detect on the described series via no current, and the described series via of control shutoff; Detect when on the described series via electric current being arranged the described series via of control conducting.
Correspondingly, the embodiment of the invention has also proposed a kind of electronic installation, include supply line and the series via that advances circuit to form, this electronic equipment comprises that also one detects control circuit, this detects control circuit and links to each other with the series via that supply line, propelling circuit constitute, when being used to detect on the described series via no current, described series via is turn-offed in control; Detect when on the described series via electric current being arranged the described series via of control conducting.
The embodiment of the invention is by providing a kind of detection control circuit and a kind of electronic installation, can realize that this detection control circuit links to each other with the series via that supply line, propelling circuit constitute, when being used to detect on the described series via no current, described series via is turn-offed in control; Detect when on the described series via electric current being arranged, the described series via of control conducting, thus save the space, it is intelligent that the output that advances circuit is turn-offed;
In addition, can realize detecting the plug and play of control circuit.
Description of drawings
Fig. 1 is the first embodiment schematic diagram of detection control circuit of the present invention;
Fig. 2 is the second embodiment schematic diagram of detection control circuit of the present invention;
Fig. 3 is the 3rd an embodiment schematic diagram of detection control circuit of the present invention;
Fig. 4 is the 4th an embodiment schematic diagram of detection control circuit of the present invention;
Fig. 5 is the 5th an embodiment schematic diagram of detection control circuit of the present invention;
Fig. 6 is the 6th an embodiment schematic diagram of detection control circuit of the present invention;
Fig. 7 is the 7th an embodiment schematic diagram of detection control circuit of the present invention;
Fig. 8 is the 8th an embodiment schematic diagram of detection control circuit of the present invention;
Fig. 9 is the schematic diagram of the electronic installation of the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of detection control circuit and a kind of electronic installation, can realize that this detection control circuit links to each other with the series via that supply line, propelling circuit constitute, when being used to detect on the described series via no current, described series via is turn-offed in control; Detect when on the described series via electric current being arranged, the described series via of control conducting, thus save the space, it is intelligent that the output that advances circuit is turn-offed, and can realize detecting the plug and play of control circuit.
Below in conjunction with accompanying drawing, the embodiment of the invention is elaborated.
Fig. 1 is the first embodiment schematic diagram of detection control circuit of the present invention, remove battery pack (supply line), boost circuit among this Fig. 1, outside the output interface, other are the detection control circuit (shown in frame of broken lines among the figure, down together) of the embodiment of the invention, wherein, described boost circuit links to each other with output interface, and this output interface one end is an equipotential position, and with reference to this figure, this detection control circuit mainly comprises:
The first switched field effect pipe (V6), second switch field effect transistor (V8) with grid (the G utmost point), source electrode (the S utmost point), drain electrode (the D utmost point); Supplying resistance (R31); Pulse generating circuit; The negative feedback amplifier circuit of forming by integrated operational amplifier circuit (N2B) with in-phase input end (5), reverse input end (6), output (7) and scale operation resistance (R17, R14); Detect resistance (R1); Wherein, described V6 be P channel metal-oxide-semiconductor field (P-Metal-Oxide-Semiconductor, PMOS), described V8 is N channel metal-oxide-semiconductor field (NMOS);
Above-mentioned each element relation as following:
The G utmost point of described V6 with extremely link to each other with the D of described V8; The D utmost point of described V6 links to each other with described boost line input; The S utmost point of described V6 links to each other with described battery pack output; In parallel between the G utmost point of described V6 and the described battery pack output is the R31 of the G utmost point power supply of described V6;
The G utmost point of described V8 respectively with described N2B 7, described pulse generating circuit output links to each other; The S utmost point ground connection of described V8;
Described R1 one end ground connection, the other end is as described equipotential position;
Described N2B 6 and 7 between be parallel with R17, described N2B 6 by R14 ground connection, described N2B 5 as described equipotential position.
According to the element and the peripheral circuit of above-mentioned connection, entire circuit operation principle such as following:
Pulse generating circuit is exported a pulsed drive V8 conducting at regular intervals at interval, and then impels also conducting of V6, detects the boost line output, promptly whether is connected with output loading shown in Fig. 1 on the output interface, and whether promptly detect the boost circuit has output;
(1) because described battery pack one end ground connection, described output interface one end is as described equipotential position, and R1 one end ground connection, the other end is as the equipotential position, N2B 5 as the equipotential position, so, when no-output electric current on described battery pack → boost circuit → output interface direction (is not connected with output loading on the output interface of boost circuit, boost circuit no-output), then the last voltage of R1 this moment is enough low, cause the N2B reverse operation, 7 outputs, one low level of N2B, this low level makes V8 end, and then the G utmost point of V6 obtains a high level, and this high level makes V6 also end, this moment the V6 no-output, described battery pack has been turn-offed in final control, the series via that the boost circuit is formed, thereby the output of having turn-offed the boost circuit;
In addition, N2B can't export lasting high level and order about whole line conduction and operate as normal in this case, has only the continual pulse of pulse generating circuit, makes circuit enter the pattern of having the hiccups, and whole line power consumption this moment is very little;
(2) when from described battery pack → boost circuit → output interface direction has output current, and (output interface of boost circuit is connected with output loading, the boost circuit has output), then the last voltage of R1 this moment is enough high, cause the work of N2B forward, 7 outputs one of N2B continue high level, should continue high level and make the V8 conducting, and then the G utmost point of V6 obtains a lasting low level, should continue low level and make also conducting of V6, this moment, V6 continued output, then described battery pack, the series via that the boost circuit is formed is normally exported, and this series via continues conducting, whole circuit operate as normal.
As a kind of execution mode, Fig. 2 is the second embodiment schematic diagram of detection control circuit of the present invention, in order to alleviate the live load on the N2B, can increase divider resistance (R32, R18) as shown in Figure 2, wherein:
The end of described R32 extremely links to each other with the D of described V6, and the other end of described R32 extremely links to each other with the G of described V8;
The end of described R18 extremely links to each other with the G of described V8, the other end ground connection of described R18.
As a kind of execution mode, Fig. 3 is the 3rd an embodiment schematic diagram of detection control circuit of the present invention, as shown in Figure 3,5 of described N2B can also be by a current-limiting resistance (R5) as described equipotential position, and described N2B 5 can also pass through an external filter capacitor (C6) ground connection, thereby effective some unwanted signals of filtering.
As a kind of execution mode, Fig. 4 is the 4th an embodiment schematic diagram of detection control circuit of the present invention, and as shown in Figure 4, above-mentioned R32, R18, R5, C6 can also use simultaneously.
Fig. 5 is the 5th an embodiment schematic diagram of detection control circuit of the present invention, remove battery pack (supply line), boost circuit among this Fig. 5, outside the output interface, other are the detection control circuit of the embodiment of the invention, wherein, described boost circuit links to each other with output interface, and this output interface one end is an equipotential position, with reference to this figure, this detection control circuit mainly comprises:
Have base stage (the B utmost point), emitter (the E utmost point), first switching transistor (V6) of collector electrode (the C utmost point), second switch transistor (V8); Supplying resistance (R31); Pulse generating circuit; The negative feedback amplifier circuit of forming by integrated operational amplifier circuit (N2B) with in-phase input end (5), reverse input end (6), output (7) and scale operation resistance (R17, R14); Detect resistance (R1); Wherein, described V6 is the PNP transistor, and described V8 is the NPN transistor;
Above-mentioned each element relation as following:
The B utmost point of described V6 with extremely link to each other with the C of described V8; The C utmost point of described V6 links to each other with described boost line input; The E utmost point of described V6 links to each other with described battery pack output; In parallel between the B utmost point of described V6 and the described battery pack output is the R31 of the B utmost point power supply of described V6;
The B utmost point of described V8 respectively with described N2B 7, described pulse generating circuit output links to each other; The E utmost point ground connection of described V8;
Described R1 one end ground connection, the other end is as described equipotential position;
Described N2B 6 and 7 between be parallel with R17, described N2B 6 by R14 ground connection, described N2B 5 as described equipotential position.
According to the element and the peripheral circuit of above-mentioned connection, entire circuit operation principle such as following:
Pulse generating circuit is exported a pulsed drive V8 conducting at regular intervals at interval, and then impels also conducting of V6, detects the boost line output, promptly whether is connected with output loading shown in Fig. 5 on the output interface, and whether promptly detect the boost circuit has output;
(1) because described battery pack one end ground connection, described output interface one end is as described equipotential position, and R1 one end ground connection, the other end is as the equipotential position, N2B 5 as the equipotential position, so, when no-output electric current on described battery pack → boost circuit → output interface direction (is not connected with output loading on the output interface of boost circuit, boost circuit no-output), then the last voltage of R1 this moment is enough low, cause the N2B reverse operation, 7 outputs, one low level of N2B, this low level makes V8 end, and then the B utmost point of V6 obtains a high level, and this high level makes V6 also end, this moment the V6 no-output, described battery pack has been turn-offed in final control, the series via that the boost circuit is formed, thereby the output of having turn-offed the boost circuit;
In addition, N2B can't export lasting high level and order about whole line conduction and operate as normal in this case, has only the continual pulse of pulse generating circuit, makes circuit enter the pattern of having the hiccups, and whole line power consumption this moment is very little;
(2) when from described battery pack → boost circuit → output interface direction has output current, and (output interface of boost circuit is connected with output loading, the boost circuit has output), then the last voltage of R1 this moment is enough high, cause the work of N2B forward, 7 outputs one of N2B continue high level, should continue high level and make the V8 conducting, and then the B utmost point of V6 obtains a lasting low level, should continue low level and make also conducting of V6, this moment, V6 continued output, then described battery pack, the series via that the boost circuit is formed is normally exported, and this series via continues conducting, whole circuit operate as normal.
As a kind of execution mode, Fig. 6 is the 6th an embodiment schematic diagram of detection control circuit of the present invention, in order to alleviate the live load on the N2B, can increase divider resistance (R32, R18) as shown in Figure 6, wherein:
The end of described R32 extremely links to each other with the C of described V6, and the other end of described R32 extremely links to each other with the B of described V8;
The end of described R18 extremely links to each other with the B of described V8, the other end ground connection of described R18.
As a kind of execution mode, Fig. 7 is the 7th an embodiment schematic diagram of detection control circuit of the present invention, as shown in Figure 7,5 of described N2B can also be by a current-limiting resistance (R5) as described equipotential position, and described N2B 5 can also pass through an external filter capacitor (C6) ground connection, thereby effective some unwanted signals of filtering.
As a kind of execution mode, Fig. 8 is the 8th an embodiment schematic diagram of detection control circuit of the present invention, and as shown in Figure 8, above-mentioned R32, R18, R5, C6 can also use simultaneously.
By implementing detection control circuit of the present invention as above-mentioned Fig. 1 to Fig. 8, because it is in parallel with the series via that described battery pack, boost circuit constitute that this detects control circuit, when being used to detect on the described series via no current, described series via is turn-offed in control, thus the output of turn-offing described boost circuit; Detect when on the described series via electric current being arranged, the described series via of control conducting, thus save the space, make the output of described boost circuit turn-off intellectuality, realize detecting the plug and play of control circuit.
Correspondingly, the embodiment of the invention also provides electronic installation as shown in Figure 9, this electronic installation comprises supply line 91, boost circuit 92, detect control circuit 93, supply line 91 forms series via with boost circuit 92, be electrically connected on the described series via and detect control circuit 93, when this detection control circuit 93 detected on the described series via no current, described series via was turn-offed in control; Detect when on the described series via electric current being arranged at this detection control circuit 93, the described series via of control conducting, particularly, the detection control circuit that the invention described above embodiment carried can be applicable to the detection control circuit 93 in this electronic installation, repeats no more herein.
When specific implementation, described electronic installation can be direct current to the tributary (Direct Current to DirectCurrent, DC to DC) device, as back-up source etc.
In addition, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Radom Access Memory, RAM) etc.
The above is the specific embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (15)
1, a kind of detection control circuit is characterized in that, the series via that this detects control circuit and supply line, advance circuit to constitute links to each other, when being used to detect on the described series via no current, and the described series via of control shutoff; Detect when on the described series via electric current being arranged the described series via of control conducting.
2, detection control circuit as claimed in claim 1 is characterized in that, described propelling line output has an equipotential position, and this detection control circuit comprises:
Have grid, source electrode, the first switched field effect pipe of drain electrode, second switch field effect transistor; Supplying resistance; Pulse generating circuit; The negative feedback amplifier circuit of forming by integrated operational amplifier circuit with in-phase input end, reverse input end, output and scale operation resistance; Detect resistance;
The grid of the described first switched field effect pipe links to each other with the drain electrode of described second switch field effect transistor; The drain electrode of the described first switched field effect pipe links to each other with described propelling line input; The source electrode of the described first switched field effect pipe links to each other with described supply line output; In parallel between the grid of the described first switched field effect pipe and the described supply line output is the supplying resistance of described first switched field effect tube grid power supply;
The grid of described second switch field effect transistor links to each other with described integrated operational amplifier circuit output, described pulse generator output respectively; The source ground of described second switch field effect transistor;
Described detection resistance one end ground connection, the other end is as described equipotential position;
Be parallel with the described first scale operation resistance between the reverse input end of described integrated operational amplifier circuit and the output, the reverse input end of described integrated operational amplifier circuit is by the described second scale operation grounding through resistance, and the in-phase input end of described integrated operational amplifier circuit is as described equipotential position.
3, detection control circuit as claimed in claim 2 is characterized in that, this detection control circuit also comprises:
Second divider resistance in parallel between first divider resistance in parallel between the grid of the drain electrode of the described first switched field effect pipe and described second switch field effect transistor, the grid of described second switch field effect transistor and ground; And/or,
As described equipotential position, described integrated operational amplifier circuit in-phase input end is by a filter capacitor ground connection by a current-limiting resistance for described integrated operational amplifier circuit in-phase input end.
As claim 2 or 3 described detection control circuits, it is characterized in that 4, the described first switched field effect pipe is P channel metal-oxide-semiconductor field, described second switch field effect transistor is N channel metal-oxide-semiconductor field.
5, detection control circuit as claimed in claim 1 is characterized in that, described propelling line output has an equipotential position, and this detection control circuit comprises:
First switching transistor, second switch transistor with base stage, emitter, collector electrode; Supplying resistance; Pulse generating circuit; The negative feedback amplifier circuit of forming by integrated operational amplifier circuit with in-phase input end, reverse input end, output and scale operation resistance; Detect resistance;
The base stage of described first switching transistor links to each other with the transistorized collector electrode of described second switch; The collector electrode of described first switching transistor links to each other with described propelling line input; The emitter of described first switching transistor links to each other with described supply line output; In parallel between the base stage of described first switching transistor and the described supply line output is the supplying resistance of described first switching transistor base stage power supply;
The transistorized base stage of described second switch links to each other with described integrated operational amplifier circuit output, described pulse generator output respectively; The transistorized grounded emitter of described second switch;
Described detection resistance one end ground connection, the other end is as described equipotential position;
Be parallel with the described first scale operation resistance between the reverse input end of described integrated operational amplifier circuit and the output, the reverse input end of described integrated operational amplifier circuit is by the described second scale operation grounding through resistance, and the in-phase input end of described integrated operational amplifier circuit is as the equipotential position.
6, detection control circuit as claimed in claim 5 is characterized in that, this detection control circuit also comprises:
Second divider resistance in parallel between first divider resistance in parallel between the drain electrode of described first switching transistor and the transistorized grid of described second switch, the transistorized grid of described second switch and ground; And/or,
As described equipotential position, described integrated operational amplifier circuit in-phase input end is by a filter capacitor ground connection by a current-limiting resistance for described integrated operational amplifier circuit in-phase input end.
7, as claim 5 or 6 described detection control circuits, it is characterized in that described first switching transistor is the PNP transistor, described second switch transistor is the NPN transistor.
8, a kind of electronic installation, include supply line and the series via that advances circuit to form, it is characterized in that, this electronic equipment comprises that also one detects control circuit, this detects control circuit and links to each other with the series via that supply line, propelling circuit constitute, when being used to detect on the described series via no current, described series via is turn-offed in control; Detect when on the described series via electric current being arranged the described series via of control conducting.
9, electronic installation as claimed in claim 8 is characterized in that, described propelling line output has an equipotential position, and described detection control circuit comprises:
Have grid, source electrode, the first switched field effect pipe of drain electrode, second switch field effect transistor; Supplying resistance; Pulse generating circuit; The negative feedback amplifier circuit of forming by integrated operational amplifier circuit with in-phase input end, reverse input end, output and scale operation resistance; Detect resistance;
The grid of the described first switched field effect pipe links to each other with the drain electrode of described second switch field effect transistor; The drain electrode of the described first switched field effect pipe links to each other with described propelling line input; The source electrode of the described first switched field effect pipe links to each other with described supply line output; In parallel between the grid of the described first switched field effect pipe and the described supply line output is the supplying resistance of described first switched field effect tube grid power supply;
The grid of described second switch field effect transistor links to each other with described integrated operational amplifier circuit output, described pulse generator output respectively; The source ground of described second switch field effect transistor;
Described detection resistance one end ground connection, the other end is as described equipotential position;
Be parallel with the described first scale operation resistance between the reverse input end of described integrated operational amplifier circuit and the output, the reverse input end of described integrated operational amplifier circuit is by the described second scale operation grounding through resistance, and the in-phase input end of described integrated operational amplifier circuit is as described equipotential position.
10, electronic installation as claimed in claim 9 is characterized in that, this detection control circuit also comprises:
Second divider resistance in parallel between first divider resistance in parallel between the grid of the drain electrode of the described first switched field effect pipe and described second switch field effect transistor, the grid of described second switch field effect transistor and ground; And/or,
As described equipotential position, described integrated operational amplifier circuit in-phase input end is by a filter capacitor ground connection by a current-limiting resistance for described integrated operational amplifier circuit in-phase input end.
As claim 9 or 10 described electronic installations, it is characterized in that 11, the described first switched field effect pipe is P channel metal-oxide-semiconductor field, described second switch field effect transistor is N channel metal-oxide-semiconductor field.
12, electronic installation as claimed in claim 8 is characterized in that, described propelling line output has an equipotential position, and described detection control circuit comprises:
First switching transistor, second switch transistor with base stage, emitter, collector electrode; Supplying resistance; Pulse generating circuit; The negative feedback amplifier circuit of forming by integrated operational amplifier circuit with in-phase input end, reverse input end, output and scale operation resistance; Detect resistance;
The base stage of described first switching transistor links to each other with the transistorized collector electrode of described second switch; The collector electrode of described first switching transistor links to each other with described propelling line input; The emitter of described first switching transistor links to each other with described supply line output; In parallel between the base stage of described first switching transistor and the described supply line output is the supplying resistance of described first switching transistor base stage power supply;
The transistorized base stage of described second switch links to each other with described integrated operational amplifier circuit output, described pulse generator output respectively; The transistorized grounded emitter of described second switch;
Described detection resistance one end ground connection, the other end is as described equipotential position;
Be parallel with the described first scale operation resistance between the reverse input end of described integrated operational amplifier circuit and the output, the reverse input end of described integrated operational amplifier circuit is by the described second scale operation grounding through resistance, and the in-phase input end of described integrated operational amplifier circuit is as the equipotential position.
13, electronic installation as claimed in claim 12 is characterized in that, this detection control circuit also comprises:
Second divider resistance in parallel between first divider resistance in parallel between the drain electrode of described first switching transistor and the transistorized grid of described second switch, the transistorized grid of described second switch and ground; And/or,
As described equipotential position, described integrated operational amplifier circuit in-phase input end is by a filter capacitor ground connection by a current-limiting resistance for described integrated operational amplifier circuit in-phase input end.
As claim 12 or 13 described electronic installations, it is characterized in that 14, described first switching transistor is the PNP transistor, described second switch transistor is the NPN transistor.
As claim 8,9,10,12 or 13 described electronic installations, it is characterized in that 15, this electronic installation is a back-up source.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810026010A CN100590974C (en) | 2008-01-24 | 2008-01-24 | Detection control circuit and electronic device |
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| CN200810026010A CN100590974C (en) | 2008-01-24 | 2008-01-24 | Detection control circuit and electronic device |
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| CN101237229A true CN101237229A (en) | 2008-08-06 |
| CN100590974C CN100590974C (en) | 2010-02-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315655A (en) * | 2010-07-02 | 2012-01-11 | 东莞钜威新能源股份有限公司 | Detection control circuit |
| CN102681449A (en) * | 2012-03-22 | 2012-09-19 | 上海华兴数字科技有限公司 | Switching value input circuit for controller special for engineering machinery |
| CN110297521A (en) * | 2019-06-24 | 2019-10-01 | Oppo广东移动通信有限公司 | Working mode switching method, device, storage medium and electronic equipment |
-
2008
- 2008-01-24 CN CN200810026010A patent/CN100590974C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315655A (en) * | 2010-07-02 | 2012-01-11 | 东莞钜威新能源股份有限公司 | Detection control circuit |
| CN102315655B (en) * | 2010-07-02 | 2013-11-20 | 东莞钜威新能源股份有限公司 | Detection control circuit |
| CN102681449A (en) * | 2012-03-22 | 2012-09-19 | 上海华兴数字科技有限公司 | Switching value input circuit for controller special for engineering machinery |
| CN102681449B (en) * | 2012-03-22 | 2015-10-28 | 上海华兴数字科技有限公司 | A kind of switching value input circuit of engineering machinery nonshared control unit |
| CN110297521A (en) * | 2019-06-24 | 2019-10-01 | Oppo广东移动通信有限公司 | Working mode switching method, device, storage medium and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN100590974C (en) | 2010-02-17 |
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Owner name: HUAWEI DEVICE CO., LTD. Free format text: FORMER NAME: SHENZHEN HUAWEI COMMUNICATION TECHNOLOGY CO., LTD. |
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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: Shenzhen Huawei Communication Technology Co., Ltd. |
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Effective date of registration: 20171031 Address after: Metro Songshan Lake high tech Industrial Development Zone, Guangdong Province, Dongguan City Road 523808 No. 2 South Factory (1) project B2 -5 production workshop Patentee after: HUAWEI terminal (Dongguan) Co., Ltd. Address before: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No. Patentee before: Huawei Device Co., Ltd. |
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Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee after: Huawei Device Co., Ltd. Address before: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: HUAWEI terminal (Dongguan) Co., Ltd. |