WO2012031468A1 - 一种耳机插拔检测电路 - Google Patents
一种耳机插拔检测电路 Download PDFInfo
- Publication number
- WO2012031468A1 WO2012031468A1 PCT/CN2011/070854 CN2011070854W WO2012031468A1 WO 2012031468 A1 WO2012031468 A1 WO 2012031468A1 CN 2011070854 W CN2011070854 W CN 2011070854W WO 2012031468 A1 WO2012031468 A1 WO 2012031468A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pin
- signal line
- pull
- detection signal
- circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/6608—Structural association with built-in electrical component with built-in single component
- H01R13/6616—Structural association with built-in electrical component with built-in single component with resistor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
- H01R13/7033—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity making use of elastic extensions of the terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/58—Contacts spaced along longitudinal axis of engagement
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/033—Headphones for stereophonic communication
Definitions
- the present invention relates to the field of terminal devices, and in particular, to a headset insertion and removal detection circuit.
- FIG. 1 is a schematic diagram of the four-segment earphone plug and socket pin definition.
- the four-segment earphone plug includes 3.5mm and 2.5mm.
- the definition of the plug pin is GND (ground) and MIC (microphone) from the root to the end.
- the difference between a three-piece headphone plug and a four-piece headphone plug is that there is no MIC pin.
- Four-segment headphone jack pin definition including: 1 ground (GND), 2 right channel (R), 2nd pin 3, 5 left channel (L), and 5 feet forming a normally closed connection with 2 feet
- the first pin 4, 6 mic (MIC) forming a normally closed connection, the difference between the three-segment earphone socket and the four-segment earphone socket is that there is no microphone (MIC) pin.
- the detection of the insertion and removal of the earphone is realized by a pair of mechanical elastic pieces inside the earphone socket, such as the 4-pin and the normally-closed 5 feet.
- the 5 pin is disconnected, electrically disconnected from the 4 pin, an interrupt is formed on the hardware, reported to the control circuit, and the terminal device enables the interrupt service routine.
- the control circuit detects the exit and exits the service program.
- the insertion and removal of the earphones causes the pins 4 and 5 of the earphone socket to be disconnected and closed, so whether the state of insertion and removal of the earphones can be correctly detected is closely related to the mechanical springs inside the earphone socket.
- the technical problem to be solved by the present invention is to provide a headphone plugging and detecting circuit, which can more reliably detect the plugging and unplugging state of the earphone.
- the present invention provides a headphone plug detecting circuit, the circuit comprising: a left channel (L) pin, a first pin connectable to and disconnected from the L pin, and a right channel a (R) pin and a second pin connectable to and disconnectable from the R pin, wherein: the circuit further includes a left detection signal line connected to the first pin, the left detection signal line being connected or configured a pull-up resistor, the first pin is electrically connected to the second pin, and the L pin and the R pin are respectively connected to a pull-down resistor.
- L left channel
- R right channel a
- the resistance of the pull-up resistor and the pull-down resistor is such that the L pin is connected to the first pin, and/or the R pin is connected to the second pin, the left detection signal line is pulled down to a low level, And the L pin is disconnected from the first pin, and when the R pin is disconnected from the second pin, the left detection signal line is pulled to a high level.
- the present invention further provides a headphone plug detecting and detecting circuit, the circuit comprising: a left channel (L) pin, a first pin connectable to and disconnected from the L pin, and a right sound a track (R) pin and a second pin connectable to and disconnectable from the R pin, wherein: the circuit further includes a left detection signal line connected to the first pin, the left detection signal line being connected or The pull-down resistor is configured, the first pin is electrically connected to the second pin, and the L pin and the R pin are respectively connected to the pull-up resistor.
- L left channel
- R right sound a track
- the resistance of the pull-up resistor and the pull-down resistor is such that the L pin is connected to the first pin, and/or the R pin is connected to the second pin, and the left detection signal line is pulled to a high level. And the L pin is disconnected from the first pin, and when the R pin is disconnected from the second pin, the left detection signal line is pulled down to a low level.
- the pull-up resistors respectively connected to the L pin and the R pin are greater than 9-10 times of the earphone coil resistance.
- the present invention further provides a headphone plug detecting and detecting circuit, the circuit comprising: a left channel (L) pin, a first pin connectable to and disconnected from the L pin, and a right sound a (R) pin and a second pin connectable to and disconnectable from the R pin, wherein:
- the circuit further includes a left detection signal line connected to the first pin and a right detection signal line connected to the second pin, wherein the left detection signal line and the right detection signal line are respectively connected or configured with a pull-up resistor
- the L pin and the R pin are respectively connected to pull-down resistors.
- the left detection signal line is pulled down to a low level, and when the L pin is disconnected from the first pin Pulling the left detection signal line to a high level, and when the R pin is connected to the second pin, the right detection signal line is pulled down to a low level, the R pin and the second pin When disconnected, the right detection signal line is pulled high.
- the present invention also provides a headphone plug detecting circuit, the circuit comprising: a left channel (L) pin, a first pin connectable to and disconnected from the L pin, and a right sound a leg pin (R) and a second pin connectable to and disconnectable from the R pin, wherein: the circuit further includes a left detecting signal line connected to the first pin and the second pin The connected right detection signal line, the left detection signal line and the right detection signal line are respectively connected or configured with a pull-down resistor, and the L pin and the R pin are respectively connected with a pull-up resistor.
- the resistance of the pull-up resistor and the pull-down resistor is such that when the L pin is connected to the first pin, the left detection signal line is pulled to a high level, and the L pin is disconnected from the first pin.
- the left detection signal line is pulled down to a low level, and when the R pin is connected to the second pin, the right detection signal line is pulled to a high level, the R pin and the second tube When the foot is disconnected, the right detection signal line is pulled down to a low level.
- the pull-up resistors respectively connected to the L pin and the R pin are greater than 9-10 times of the earphone coil resistance.
- the invention not only has the advantages of simple circuit, small PCB footprint and low hardware cost, but also can effectively improve the reliability of the headphone plugging detection.
- FIG. 1 is a schematic diagram of a definition of a four-segment earphone plug and a socket pin in the prior art
- FIG. 2 is a schematic diagram of Embodiment 1 of the earphone plugging and detecting circuit of the present embodiment
- 3 is a schematic diagram of Embodiment 2 of the earphone plugging and detecting circuit of the present embodiment
- FIG. 4 is a schematic diagram of Embodiment 3 of the headphone plugging and detecting circuit of the present embodiment
- FIG. 2 shows a headphone plug detecting and detecting circuit of the present invention, comprising: an L pin 5, a first pin 4, an R pin 2, and a R pin 2 which are normally closed to the L pin 5;
- the second pin 3 of the normally closed connection and the left detecting signal line connected to the first pin 4 are connected to the left detecting signal line or the pull-up resistor R1 is disposed, and the first pin 4 is electrically connected to the second pin 3, L pin 5 and R pin 2 are respectively connected to pull-down resistors.
- the resistor R1 connected to the left detection signal line is a pull-up resistor, and if the left detection signal line can be internally configured with a pull-up resistor, R1 can be omitted.
- R1 forms a voltage dividing circuit with a pull-down resistor R3 connected to the left channel output (L-OUT) signal line and a pull-down resistor R2 connected to the right channel output (R-OUT) signal line, and R2 and R3
- the pull-down capability is far stronger than the pull-up capability of R1.
- the resistance of R1 is at least 10 times that of R2 and R3.
- the resistance of R1 is 100 ⁇ ⁇ .
- R2 and R3 have a resistance of 10 ⁇ . It is not limited to 10 times or more here, and can be valued according to experience, such as 9 times, 9.5 times, and the like.
- the second pin 3 of the headphone jack and the first pin 4 are electrically connected together.
- the earphone socket R pin 2 and the L pin 5 are disconnected, electrically disconnected from the second pin 3 and the first pin 4, respectively, and the pull-down resistors R2 and R3 are disabled, and the pull-up resistor R1 makes The left detection signal line is pulled up to a high level, forming a hardware interrupt, detecting the insertion of the earphone, and the process of pulling out the earphone is reversed.
- the R pin 2 and the second pin 3, or one of the first pin 4 and the L pin 5 cannot form a normally closed state, and the other group can still work normally, for example, the first tube Pin 4 and L pin 5 are normally closed, and R1 and R2 can still form a partial voltage through the normally closed R pin 2 and the second pin 3.
- the R pin 2 is disconnected, electrically The second pin 3 is disconnected, and the left detection signal line is pulled up to a high level to form a hardware interrupt, and the earphone insertion is detected, and the earphone extraction process is reversed. This shows that The detection circuit requires that a set of normally closed pins be valid, and the reliability of the earphone plugging detection is provided.
- FIG. 3 shows a headphone plug detecting and detecting circuit of the present invention, the circuit comprising: an L pin 5, a first pin 4 and an R pin 2 connectable to and disconnected from the L pin 5, and The second pin 3 to which the R pin 2 can be connected and disconnected and the left detecting signal line connected to the first pin 4, the left detecting signal line being connected or configured with a pull-down resistor R1, the first pin 4 and the second Pin 3 is electrically connected, and L pin 5 and R pin 2 are connected to pull-up resistors R3 and R2, respectively.
- the resistor R1 connected to the left detection signal line is a pull-down resistor, and if the left detection signal line can be internally configured with a pull-down resistor, the resistor can be omitted.
- R1 forms a voltage dividing circuit with a pull-up resistor R3 connected to the left channel output signal line (L-OUT) and a pull-up resistor R2 connected to the right channel output signal line, and the pull-up resistors R2 and R3
- the pull-up capability is much larger than the pull-down capability of the pull-down resistor R1.
- the resistance of R2 and R3 is preferably greater than 32 ohms (headphone coil resistance) 9 ⁇ 10 times. In order to avoid a large current shunting of the earphone when the earphone is inserted, the effect of the earphone is affected.
- the R pin 2 and the L pin 5 of the earphone socket are disconnected, electrically disconnected from the second pin 3 and the first pin 4, and the pull-up resistors R2 and R3 are disabled, and the pull-down resistor R1 is made.
- the left detection signal line is pulled low to form a hardware interrupt, the earphone insertion is detected, and the headphone extraction process is reversed.
- the detection circuit requires only one set of normally closed pins to be effective. For example, the first pin 4 and the L pin 5 are normally closed, and R1 and R2 can still form a divided voltage through the normally closed R pin 2 and the second pin 3. When the earphone is inserted, the R pin 2 is broken.
- Embodiment 3 On, electrically disconnected from the second pin 3, the left detection signal line is pulled down to a high level, forming a hardware interrupt, detecting the insertion of the earphone, and the process of pulling out the earphone is reversed.
- Embodiment 3 FIG.
- FIG. 4 shows a headphone plug detecting and detecting circuit of the present invention, the circuit comprising: an L pin 5, a first pin 4 and an R pin 2 connectable to and disconnected from the L pin 5, and The second pin 3 to which the R pin 2 can be connected and disconnected, and the left detection signal line connected to the first pin 4 and the right detection signal line connected to the second pin 3, the left detection signal line and the right detection Signal lines are connected or configured with pull-up resistors, The L pin and the R pin are respectively connected to pull-down resistors.
- the resistor R1 connected to the left detection signal line is a pull-up resistor, and if the left detection signal line can be internally configured with a pull-up resistor, the resistor can be omitted.
- R1 and a pull-down resistor R3 connected to the left channel output signal line (L-OUT) form a voltage dividing circuit through the normally closed first pin 4 and L pin 5.
- the pull-up resistor connected to the right detection signal line is R4. If the right detection signal line can be internally configured with a pull-up resistor, R4 can be omitted.
- R4 and the pull-down resistor R2 connected to the right channel output signal line (R-OUT) form a voltage dividing circuit through the normally closed R pin 2 and the second pin 3, and the pull-down capability of R2 and R3 is far stronger.
- the pull-up capability of R1 and R4 causes the left detection signal line and the right detection signal line to be pulled low when the headphones are not inserted.
- the earphone socket R pin 2 and L pin 5 are disconnected, electrically disconnected from the second pin 3 and the first pin 4, respectively, the pull-down resistors R2 and R3 are disabled, and the pull-up resistor makes the left Both the detection signal line and the right detection signal line are pulled up to a high level to form a hardware interrupt, and the headphone insertion is detected, and the headphone extraction process is reversed.
- one of the normally closed pins fails, one of the detection pins is high and the other detection pin is low.
- the control circuit considers that there is no earphone insertion.
- a set of earphone shrapnel that has not failed is disconnected and electrically separated.
- FIG. 5 shows a headphone plug detecting and detecting circuit of the present invention, the circuit comprising: an L pin 5, a first pin 4 and an R pin 2 connectable to and disconnected from the L pin 5, and The second pin 3 to which the R pin 2 can be connected and disconnected, and the left detection signal line connected to the first pin 4 and the right detection signal line connected to the second pin 3, the left detection signal line and the right detection
- the signal lines are respectively connected or configured with pull-down resistors
- L pin 5 and R pin 2 are respectively connected to pull-up resistors.
- the resistor R1 connected to the left detection signal line is a pull-down resistor, and if the left detection signal line can be internally configured with a pull-down resistor, the resistor can be omitted.
- R1 forms a voltage dividing circuit with a pull-up resistor R3 connected to the left channel output (L-OUT) signal line.
- the pull-down resistor on the right detection signal line is R4. If the right detection signal line can be internally configured with a pull-down resistor, the resistor can be omitted. R4 and the right channel
- the pull-up resistor R2 on the outgoing (R-OUT) signal line forms a voltage dividing circuit. Moreover, the pull-up capability of R2 and R3 is much stronger than the pull-down capability of R1 and R4.
- both the left detection signal line and the right detection signal line are pulled up to a high level, and at the same time, the resistance of R2 and R3
- the value is preferably greater than 32 ohms (headphone coil resistance) 9 to 10 times to avoid a large current shunting of the earphone when the earphone is inserted, which affects the earphone effect.
- Both the signal line and the right detection signal line are pulled down to a low level, forming a hardware interrupt, detecting the insertion of the earphone, and the process of pulling out the earphone is reversed.
- one of the normally closed pins is disabled, one of the sense pins is low and the other sense pin is detected high.
- the control circuit considers that no headphones are plugged in.
- a set of earphone shrapnel that has not failed is disconnected and electrically separated.
- both detecting pins are low level, and the control circuit considers that the earphone is inserted and the earphone is detected.
- the terminal of the above-mentioned earphone plugging and unplugging detection circuit is also provided in the present embodiment.
- the earphone plugging and detecting circuit is disposed in the housing of the terminal. The structure of the earphone plugging and detecting circuit is as described above, and details are not described herein again.
- the dual-slip earphone plug-and-pull detection circuit is also suitable for a headphone jack with two sets of normally open pins.
- the principle is similar.
- the above circuit forms can improve the reliability of the earphone plugging and unplugging detection. Since the embodiment 1 occupies less resources and the circuit is relatively simple, the first embodiment is preferred.
- the sense pin can be internally configured with pull-up or pull-down resistors, the pull-up or pull-down resistors on the sense pin can be omitted, further reducing PCB space and hardware costs.
- the invention not only has the advantages of simple circuit, small PCB occupation area and low hardware cost, but also can effectively improve the reliability of the earphone plugging detection.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Stereophonic Arrangements (AREA)
- Circuit For Audible Band Transducer (AREA)
- Headphones And Earphones (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020127020815A KR101369944B1 (ko) | 2010-09-08 | 2011-01-31 | 이어폰 풀링/플러깅 검출 회로 |
JP2012552247A JP5562442B2 (ja) | 2010-09-08 | 2011-01-31 | イヤホン挿抜検出回路 |
US13/576,756 US9332350B2 (en) | 2010-09-08 | 2011-01-31 | Earphone pulling and plugging detection circuit |
EP11822991.3A EP2519034B1 (en) | 2010-09-08 | 2011-01-31 | Earphone pulling and plugging detection circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010205255273U CN201789630U (zh) | 2010-09-08 | 2010-09-08 | 一种耳机插拔检测电路 |
CN201020525527.3 | 2010-09-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012031468A1 true WO2012031468A1 (zh) | 2012-03-15 |
Family
ID=43821578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/070854 WO2012031468A1 (zh) | 2010-09-08 | 2011-01-31 | 一种耳机插拔检测电路 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9332350B2 (zh) |
EP (1) | EP2519034B1 (zh) |
JP (1) | JP5562442B2 (zh) |
KR (1) | KR101369944B1 (zh) |
CN (1) | CN201789630U (zh) |
WO (1) | WO2012031468A1 (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101946486B1 (ko) | 2012-08-23 | 2019-04-26 | 삼성전자 주식회사 | 이어폰 접속 인터페이스 및 이어폰 운용 방법과, 이를 지원하는 단말기 |
CN103024632B (zh) * | 2012-12-30 | 2016-06-01 | 青岛歌尔声学科技有限公司 | 一种耳机降噪装置 |
KR102262218B1 (ko) * | 2015-01-28 | 2021-06-09 | 삼성전자주식회사 | 이어잭 인식 방법 및 이를 지원하는 전자 장치 |
CN111294699B (zh) * | 2018-12-29 | 2021-12-03 | 展讯通信(深圳)有限公司 | 防液体误判的耳机检测方法及装置 |
CN111372180A (zh) * | 2020-03-03 | 2020-07-03 | 深圳市金锐显数码科技有限公司 | 一种智能耳机的检测方法及检测*** |
CN114501285B (zh) * | 2020-11-13 | 2023-05-16 | 华为技术有限公司 | 一种插拔检测电路及插拔检测方法 |
CN114786108B (zh) * | 2022-03-07 | 2022-12-09 | 深圳市安耐科电子技术有限公司 | 用于单声道功率放大器的配置电路和音频播放设备 |
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CN101610439A (zh) * | 2008-06-19 | 2009-12-23 | 鸿富锦精密工业(深圳)有限公司 | 电子装置 |
CN101610440A (zh) * | 2008-06-19 | 2009-12-23 | 鸿富锦精密工业(深圳)有限公司 | 电子装置 |
TW201004389A (en) * | 2008-07-04 | 2010-01-16 | Hon Hai Prec Ind Co Ltd | Electronic apparatus |
TW201004390A (en) * | 2008-07-04 | 2010-01-16 | Hon Hai Prec Ind Co Ltd | Electronic apparatus |
CN201781618U (zh) * | 2010-08-27 | 2011-03-30 | 广东长虹数码科技有限公司 | 一种可靠性高的耳机检测电路 |
Family Cites Families (4)
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JPS58171194A (ja) * | 1982-03-31 | 1983-10-07 | Matsushita Electric Ind Co Ltd | 音響装置 |
TWI226731B (en) * | 2003-03-26 | 2005-01-11 | Realtek Semiconductor Corp | Multi-jacks detector |
JP2005045477A (ja) * | 2003-07-28 | 2005-02-17 | Sanyo Electric Co Ltd | 音声回路 |
JP2007312030A (ja) * | 2006-05-17 | 2007-11-29 | Pioneer Electronic Corp | ヘッドホン検知回路 |
-
2010
- 2010-09-08 CN CN2010205255273U patent/CN201789630U/zh not_active Expired - Lifetime
-
2011
- 2011-01-31 US US13/576,756 patent/US9332350B2/en not_active Expired - Fee Related
- 2011-01-31 KR KR1020127020815A patent/KR101369944B1/ko active IP Right Grant
- 2011-01-31 EP EP11822991.3A patent/EP2519034B1/en active Active
- 2011-01-31 JP JP2012552247A patent/JP5562442B2/ja not_active Expired - Fee Related
- 2011-01-31 WO PCT/CN2011/070854 patent/WO2012031468A1/zh active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101610439A (zh) * | 2008-06-19 | 2009-12-23 | 鸿富锦精密工业(深圳)有限公司 | 电子装置 |
CN101610440A (zh) * | 2008-06-19 | 2009-12-23 | 鸿富锦精密工业(深圳)有限公司 | 电子装置 |
TW201004389A (en) * | 2008-07-04 | 2010-01-16 | Hon Hai Prec Ind Co Ltd | Electronic apparatus |
TW201004390A (en) * | 2008-07-04 | 2010-01-16 | Hon Hai Prec Ind Co Ltd | Electronic apparatus |
CN201781618U (zh) * | 2010-08-27 | 2011-03-30 | 广东长虹数码科技有限公司 | 一种可靠性高的耳机检测电路 |
Also Published As
Publication number | Publication date |
---|---|
EP2519034A4 (en) | 2014-04-23 |
JP2013519324A (ja) | 2013-05-23 |
KR20120102810A (ko) | 2012-09-18 |
US9332350B2 (en) | 2016-05-03 |
KR101369944B1 (ko) | 2014-03-06 |
EP2519034B1 (en) | 2020-11-04 |
US20120308031A1 (en) | 2012-12-06 |
JP5562442B2 (ja) | 2014-07-30 |
CN201789630U (zh) | 2011-04-06 |
EP2519034A1 (en) | 2012-10-31 |
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