CN101924808B - Mobile terminal - Google Patents
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- CN101924808B CN101924808B CN 201010259386 CN201010259386A CN101924808B CN 101924808 B CN101924808 B CN 101924808B CN 201010259386 CN201010259386 CN 201010259386 CN 201010259386 A CN201010259386 A CN 201010259386A CN 101924808 B CN101924808 B CN 101924808B
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- 238000012360 testing method Methods 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
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- 101000965313 Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513) Aconitate hydratase A Proteins 0.000 description 1
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- 238000010295 mobile communication Methods 0.000 description 1
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Abstract
The invention relates to a mobile terminal which comprises a main control circuit. The mobile terminal is characterized in that the main control circuit is connected with a Micro-USB interface, and the mobile terminal also comprises a first attachment detecting circuit for detecting a level value of a power supply input pin (A) in the Micro-USB interface and a second attachment detecting circuit for detecting level values of two signal transmission pins (B,C) in the Micro-USB interface; the first attachment detecting circuit is connected with an anode of a diode; a cathode of the diode is connected with the power supply input pin (A) of the Micro-USB interface; meanwhile, the anode of the diode is connected with an external voltage-stabilizing power supply; and the second attachment detecting circuit is connected with the two signal transmission pins (B,C) of the Micro-USB interface. Compared with the prior art, the invention has the advantages of connecting a plurality of attachmentswith the mobile terminal by the Micro-USB interface without additional other external interfaces and greatly reducing the integral size of a mainboard of the mobile terminal.
Description
Technical field
The present invention relates to a kind of portable terminal.
Background technology
The function of portable terminal (as mobile communication terminal, PDA etc.) is more and more, yet for the needs of appearance design, generally requires the overall dimensions of portable terminal mainboard to need little and compact again.And portable terminal and external annex (as usb data line, UART Serial Port Line, earphone cord, charger etc.) are also more and more, and the external interface that needs is also more and more, and this has just formed a contradiction virtually.
Summary of the invention
Technical problem to be solved by this invention is the portable terminal that provides a kind of a plurality of annex to be connected with portable terminal by an external interface at above-mentioned prior art.
The present invention solves the problems of the technologies described above the technical scheme that adopts: this portable terminal, include a main control circuit, it is characterized in that: described main control circuit is connected with a Micro-USB interface, and described portable terminal also includes for detection of the first annex testing circuit of the potential value at power supply input pin place in the described Micro-USB interface with for detection of the second annex testing circuit of the potential value at two signals transmission pin places in the described Micro-USB interface, the described first annex testing circuit links to each other with the positive pole of a diode, the negative pole of this diode links to each other with the power supply input pin of described Micro-USB interface, and the positive pole of diode links to each other with external power supply simultaneously; The described second annex testing circuit links to each other with two signal transmission pin pins of described Micro-USB interface.
When described Micro-USB interface is connected with the usb data line, the power supply input pin of usb data line is linked to each other with the power supply input pin of described Micro-USB interface, two signal transmission pins of usb data line are linked to each other with two signal transmission pins of described Micro-USB interface respectively, the grounding pin of usb data line is linked to each other with the grounding pin of described Micro-USB interface, the sign pin in the described Micro-USB interface is unsettled.
When described Micro-USB interface is connected with charger, the power supply input pin of charger is linked to each other with the power supply input pin of described Micro-USB interface, two signal transmission pins of described Micro-USB interface are directly linked together, the grounding pin of charger is linked to each other with the grounding pin of described Micro-USB interface, the sign pin in the described Micro-USB interface is unsettled.
When described Micro-USB interface is connected with the UART serial port data line, first end that the power supply input pin of described Micro-USB interface is connected first dropping resistor, second end of first dropping resistor links to each other with the grounding pin of described Micro-USB interface, two signal transmission pins of described Micro-USB interface are linked to each other with two single data pins of UART serial port data line respectively, the grounding pin of charger is linked to each other with the grounding pin of described Micro-USB interface, the sign pin in the described Micro-USB interface is unsettled.
When described Micro-USB interface is connected with earphone cord, first end that the power supply input pin of described Micro-USB interface is connected second dropping resistor, second end of second dropping resistor links to each other with the grounding pin of described Micro-USB interface, two signal transmission pins of described Micro-USB interface are linked to each other with the left and right acoustic channels data wire of earphone cord respectively, the sign pin in the described Micro-USB interface is linked to each other with the microphone data line of earphone cord.
Compared with prior art, the invention has the advantages that: a plurality of annexes can be connected with portable terminal by this Micro-USB interface, and not need other extra external interfaces, can dwindle the overall dimensions of portable terminal mainboard greatly; Can judge that by the first annex testing circuit what be connected with the Micro-USB interface is UART serial port data line or earphone cord, can judge that by the first annex testing circuit what be connected with the Micro-USB interface is usb data line or charger.
Description of drawings
Fig. 1 is the circuit connection diagram of portable terminal in the embodiment of the invention.
Fig. 2 is the circuit connection diagram of Micro-USB interface and usb data line.
Fig. 3 is the circuit connection diagram of Micro-USB interface and charger.
Fig. 4 is the circuit connection diagram of Micro-USB interface and UART serial port data line.
Fig. 5 is the circuit connection diagram of Micro-USB interface and earphone cord.
Embodiment
Describe in further detail below in conjunction with the present invention of accompanying drawing embodiment.
The invention provides a kind of portable terminal, comprise casing 1, be provided with a main control circuit 2 in the casing 1, this main control circuit 2 is connected with a Micro-USB interface 3, the Micro-USB interface is arranged on casing one side, and also include the first annex testing circuit 4 and the second annex testing circuit 5 in the casing 1, the first annex testing circuit also links to each other with main control circuit with the second annex testing circuit, the first annex testing circuit is for detection of the potential value at power supply input pin A place in the described Micro-USB interface, and the second annex testing circuit is for detection of two signal transmission pin B in the described Micro-USB interface, the potential value at C place; The described first annex testing circuit links to each other with the positive pole of a diode D1, and the negative pole of this diode D1 links to each other with the power supply input pin A of described Micro-USB interface, links to each other with external power supply after the positive pole of diode connects a voltage regulation resistance R1 simultaneously; The described second annex testing circuit links to each other with two signal transmission pin pin B, C of described Micro-USB interface, referring to shown in Figure 1
The first annex testing circuit and the first annex testing circuit can adopt the conventional testing circuit for detection of the current potential height.
Because the Micro-USB interface is made the jack form, and by standardization, be general between manufacturer therefore, can be connected with a plurality of annexes:
When described Micro-USB interface 3 is connected with usb data line 6, the other end of usb data line 4 connects USB interface 7, the power supply input pin A of usb data line is linked to each other with the power supply input pin A of described Micro-USB interface, two signal transmission pin B, C of usb data line are linked to each other with two signal transmission pin B, C of described Micro-USB interface respectively, the grounding pin E of usb data line is linked to each other with the grounding pin E of described Micro-USB interface, sign pin in the described Micro-USB interface is unsettled, referring to shown in Figure 2.
When described Micro-USB interface 3 is connected with charger 8, the power supply input pin of charger is linked to each other with the power supply input pin A of described Micro-USB interface, two signal transmission pins of described Micro-USB interface are directly linked together, in the present embodiment, two signal transmission pins of Micro-USB interface are linked to each other with two signal pins of charger respectively, and two signal pins with charger directly link to each other again; The grounding pin of charger is linked to each other with the grounding pin of described Micro-USB interface, the sign pin in the described Micro-USB interface is unsettled, referring to shown in Figure 3.
When described Micro-USB interface 3 is connected with UART serial port data line 9, first end that the power supply input pin A of described Micro-USB interface is connected the first dropping resistor Rid2, second end of the first dropping resistor Rid2 links to each other with the grounding pin E of described Micro-USB interface, two signal transmission pin B with described Micro-USB interface, C respectively with two single data pin TXD of UART serial port data line, RXD links to each other, the grounding pin E of charger is linked to each other with the grounding pin E of described Micro-USB interface, the sign pin D in the described Micro-USB interface is unsettled.
When described Micro-USB interface 3 is connected with earphone cord 10, first end that the power supply input pin A of described Micro-USB interface is connected the second dropping resistor Rid2, second end of the second dropping resistor Rid2 links to each other with the grounding pin E of described Micro-USB interface, two signal transmission pin B, C of described Micro-USB interface are linked to each other with left and right acoustic channels data wire SPKL, the SPKR of earphone cord respectively, the sign pin D in the described Micro-USB interface is linked to each other with the microphone data line MICP of earphone cord.
When described portable terminal has FM receiving circuit 11, shell and the shielding conductor of external headset plug is connected to described FM receiving circuit as the antenna of described FM receiving circuit.
The first annex testing circuit can be judged the UART serial port data line of insertion, the model of earphone, its potential change by the first annex testing circuit one realizes: when earphone or UART serial port data line insertion Micro-USB interface, because the logical first dropping resistor Rid1 of the power supply input pin A of earphone/UART serial port data line or the second dropping resistor Rid2 drag down, and the corresponding different dropping resistor value of different earphones/UART serial port data line, different variations can take place according to the different resistances of dropping resistor in the current potential of the first annex testing circuit, according to its current potential, the first annex testing circuit one can be judged the UART serial port data line of insertion, the model of earphone.
What the second annex testing circuit was used for judging insertion is usb data line or charger, it is two signals transmission pin B when inserting charger/usb data line, the potential change of C realizes: when the Micro-USB interface inserts charger, because two signal input pin B of charger, the C pin is connected together, and the C pin has been drawn high in the circuit of portable terminal, so B, the C pin is all high, and what can detect insertion is charger; When the Micro-USB interface insert be the usb data line time, the C pin is drawn high in the circuit of portable terminal, because B, C pin computer side drags down (and drag down resistance very big comparatively speaking) by dragging down resistance, so the B pin is pulled low to low level by computer side, concerning the C pin and since usb data line and computer drag down resistance relatively move end side to draw high resistance very big, draw high to high level so the C pin is moved end side.So the B pin is low, C pin height, what can detect insertion is the usb data line, can carry out transfer of data and portable terminal is charged this moment.
When charging, because the existence of diode, charging current can not flow in first testing circuit.
The interface shell of earphone and shielding conductor are connected to the wireless receiver antenna of FM, and when inserting earphone, the FM receiver circuit can receive the FM signal, realize radio function.
Claims (5)
1. portable terminal, include a main control circuit, it is characterized in that: described main control circuit is connected with a Micro-USB interface, and described portable terminal also includes the first annex testing circuit of the potential value of locating for detection of power supply input pin (A) in the described Micro-USB interface and transmits pin (B for detection of two signals in the described Micro-USB interface, the second annex testing circuit of the potential value of C) locating, the described first annex testing circuit links to each other with the positive pole of a diode, the negative pole of this diode links to each other with the power supply input pin (A) of described Micro-USB interface, and the positive pole of diode links to each other with external power supply simultaneously; The described second annex testing circuit links to each other with two signal transmission pin pins (B, C) of described Micro-USB interface;
When described Micro-USB interface is connected with charger, the power supply input pin of charger is linked to each other with the power supply input pin (A) of described Micro-USB interface, two signal transmission pins of described Micro-USB interface are directly linked together, the grounding pin of charger is linked to each other with the grounding pin of described Micro-USB interface, the sign pin in the described Micro-USB interface is unsettled; When charging, because the existence of diode, charging current can not flow in the first annex testing circuit.
2. portable terminal according to claim 1, it is characterized in that: when described Micro-USB interface is connected with the usb data line, the power supply input pin of usb data line is linked to each other with the power supply input pin (A) of described Micro-USB interface, two signal transmission pins of usb data line are linked to each other with two signal transmission pins of described Micro-USB interface respectively, the grounding pin of usb data line is linked to each other with the grounding pin of described Micro-USB interface, the sign pin in the described Micro-USB interface is unsettled.
3. portable terminal according to claim 1, it is characterized in that: when described Micro-USB interface is connected with the UART serial port data line, first end that the power supply input pin (A) of described Micro-USB interface is connected first dropping resistor, second end of first dropping resistor links to each other with the grounding pin of described Micro-USB interface, two signal transmission pins (B, C) of described Micro-USB interface are linked to each other with the two single data pins (TXD, RXD) of UART serial port data line respectively, the sign pin in the described Micro-USB interface is unsettled.
4. portable terminal according to claim 1, it is characterized in that: when described Micro-USB interface is connected with earphone cord, first end that the power supply input pin (A) of described Micro-USB interface is connected second dropping resistor, second end of second dropping resistor links to each other with the grounding pin of described Micro-USB interface, two signal transmission pin (B with described Micro-USB interface, C) respectively with the left and right acoustic channels data wire (SPKL of earphone cord, SPKR) link to each other, the sign pin in the described Micro-USB interface is linked to each other with the microphone data line (MICP) of earphone cord.
5. portable terminal according to claim 4, it is characterized in that: described portable terminal includes a FM receiving circuit, and shell and the shielding conductor of external headset plug is connected to described FM receiving circuit as the antenna of described FM receiving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010259386 CN101924808B (en) | 2010-08-18 | 2010-08-18 | Mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010259386 CN101924808B (en) | 2010-08-18 | 2010-08-18 | Mobile terminal |
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| CN101924808A CN101924808A (en) | 2010-12-22 |
| CN101924808B true CN101924808B (en) | 2013-10-02 |
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| CN 201010259386 Active CN101924808B (en) | 2010-08-18 | 2010-08-18 | Mobile terminal |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882087A (en) * | 2012-09-21 | 2013-01-16 | 宜鼎国际股份有限公司 | General purpose connector and manufacturing method thereof |
| CN104702265B (en) * | 2013-12-05 | 2021-02-05 | 上海果壳电子有限公司 | Multifunctional interface in wearable device |
| TW201630279A (en) * | 2014-09-19 | 2016-08-16 | 鴻慶鑫電聲科技有限公司 | Connector, docking station and connecting assembly with the connector |
| US9641622B2 (en) * | 2014-12-04 | 2017-05-02 | Apple Inc. | Master device for using connection attribute of electronic accessories connections to facilitate locating an accessory |
| CN105068959A (en) * | 2015-08-25 | 2015-11-18 | 广东欧珀移动通信有限公司 | Terminal and charging method and apparatus for terminal with data exchange function |
| CN106658283B (en) * | 2015-11-04 | 2019-06-04 | 深圳市海能达通信有限公司 | The system that double contact pin type earphone interfaces automatically switch |
| CN106603755B (en) * | 2016-10-26 | 2019-06-14 | 珠海格力电器股份有限公司 | A kind of mobile terminal and the data processing method based on mobile terminal |
| CN107526702B (en) * | 2017-09-15 | 2023-12-05 | 深圳传音制造有限公司 | USB interface circuit of mobile terminal and mobile terminal with same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335535A (en) * | 2008-08-05 | 2008-12-31 | 中兴通讯股份有限公司 | Multifunctional interface circuit, mobile terminal, multifunctional interface implementing method |
| CN201289641Y (en) * | 2008-11-19 | 2009-08-12 | 龙旗科技(上海)有限公司 | Mobile terminal with self-adapting minitype USB interface access equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201774101U (en) * | 2010-08-18 | 2011-03-23 | 萨基姆移动电话研发（宁波）有限公司 | Mobile terminal |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335535A (en) * | 2008-08-05 | 2008-12-31 | 中兴通讯股份有限公司 | Multifunctional interface circuit, mobile terminal, multifunctional interface implementing method |
| CN201289641Y (en) * | 2008-11-19 | 2009-08-12 | 龙旗科技(上海)有限公司 | Mobile terminal with self-adapting minitype USB interface access equipment |
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| CN101924808A (en) | 2010-12-22 |
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Owner name: TCL COMMUNICATION (NINGBO) CO., LTD. Free format text: FORMER OWNER: SAGEM MOBILES RESEARCH AND DEVELOPMENT (NINGBO) CO., LTD. Effective date: 20120523 |
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Effective date of registration: 20201228 Address after: 511400 No.106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province (self compiled Building 1) x1301-a4845 (cluster registration) (JM) Patentee after: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Address before: 315000 6th Floor, No. 5, Lane 999, Yangfan Road, High-tech Zone, Ningbo City, Zhejiang Province Patentee before: TCL COMMUNICATION (NINGBO) Co.,Ltd. Effective date of registration: 20201228 Address after: 274200 Room 102, 1 / F, Jiahe neighborhood committee, Wenting street, Chengwu County, Heze City, Shandong Province Patentee after: Chengwu Yichang Information Technology Co.,Ltd. Address before: 511400 No.106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province (self compiled Building 1) x1301-a4845 (cluster registration) (JM) Patentee before: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. |
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Effective date of registration: 20221214 Address after: No.20, No.001, Bole Street, Chengwu County, Heze City, Shandong Province, 274000 Patentee after: Chengwu Qiyuan State owned Assets Operation Co.,Ltd. Address before: 274200 Room 102, 1 / F, Jiahe neighborhood committee, Wenting street, Chengwu County, Heze City, Shandong Province Patentee before: Chengwu Yichang Information Technology Co.,Ltd. |