CN101626412A - Mobile terminal circuit with multifunctional earphone socket and implementation method thereof - Google Patents

Mobile terminal circuit with multifunctional earphone socket and implementation method thereof Download PDF

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Publication number
CN101626412A
CN101626412A CN200910056195A CN200910056195A CN101626412A CN 101626412 A CN101626412 A CN 101626412A CN 200910056195 A CN200910056195 A CN 200910056195A CN 200910056195 A CN200910056195 A CN 200910056195A CN 101626412 A CN101626412 A CN 101626412A
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CN
China
Prior art keywords
earphone socket
earphone
baseband processor
analog switch
transmission channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN200910056195A
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Chinese (zh)
Inventor
伍威铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Wingtech Electronic Technology Co Ltd
Original Assignee
Shanghai Wingtech Electronic Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Wingtech Electronic Technology Co Ltd filed Critical Shanghai Wingtech Electronic Technology Co Ltd
Priority to CN200910056195A priority Critical patent/CN101626412A/en
Publication of CN101626412A publication Critical patent/CN101626412A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a mobile terminal circuit with a multifunctional earphone socket and an implementation method thereof. The mobile terminal circuit comprises an earphone socket which is matched with an earphone plug of the mobile terminal and a data line plug, and switches to the baseband processor and the earphone socket between an earphone signal transmission channel and a data line transmission channel; and when the data line detection unit detects that the data line is inserted into the earphone socket, the baseband processor controls the analog switch unit to switch to the baseband processor and the data line signal transmission channel of the earphone socket. The mobile terminal circuit uses the standard earphone socket, realizes the function of sharing a standard interface for the earphone and the data line of the mobile terminal, and lowers the cost.

Description

A kind of mobile terminal circuit and its implementation with multifunctional earphone socket
Technical field
The present invention relates to field of mobile terminals, particularly a kind of mobile terminal circuit and its implementation with multifunctional earphone socket.
Background technology
Along with development of technology, portable terminal is constantly to lightening development, and big multi-mobile-terminal all leaves earphone mouth and data port.A lot of portable terminals have adopted independent earphone socket and data-interface socket, have occupied the very big space of PCB (circuit printing plate), to lightening unfavorable, have also wasted cost simultaneously.Also have some portable terminals to adopt the two-in-one socket of earphone mouth data port of own uniqueness, each producer's definition is all different like this, and the planform of each producer's design has nothing in common with each other, so be unfavorable for standardized realization, has wasted resource.
Provide a kind of standardized interface so press for, realize that the interface of earphone and data wire is shared, realize this function such as the earphone socket that utilizes standard.
Summary of the invention
The purpose of this invention is to provide a kind of mobile terminal circuit and its implementation with multifunctional earphone socket.
On the one hand, the invention provides a kind of mobile terminal circuit, comprising with multifunctional earphone socket:
Baseband processor is carried out the signal transmission in order to each unit of controlling described circuit;
Earphone socket is with the headset plug and the data wire plug coupling of described portable terminal;
Analog switch unit, its input connects described baseband processor, and output connects described earphone socket, in order to described baseband processor and described earphone socket are switched between earphone signal transmission channel and data line signal transmission channel;
The data wire detecting unit, in order to detect the signal that takes place when data wire inserts described earphone socket, if detect, then described baseband processor is controlled the data line signal transmission channel that described analog switch unit switches to described baseband processor and described earphone socket.
Described analog switch unit comprises three groups of analog switches, first group of analog switch connects the left receiver shell fragment of described baseband processor and described earphone socket respectively, second group of analog switch connects the right receiver shell fragment of described baseband processor and described earphone socket respectively, and the 3rd group of analog switch connects Mike's shell fragment of described baseband processor and described earphone socket respectively.
Described data wire detecting unit comprises the level transferring chip that is connected between described baseband processor and the earphone socket, and the level signal that takes place when described data wire is inserted described earphone socket is converted into interrupt signal and imports described baseband processor.
On the other hand, the present invention also provides a kind of method that realizes the portable terminal multifunctional earphone socket, and described method comprises based on the baseband processor control of portable terminal:
The headset plug of a, the earphone socket that makes described portable terminal and described portable terminal and data wire plug coupling;
B, the earphone signal transmission channel of setting up described baseband processor and earphone socket and data line signal transmission channel;
Whether c, the described earphone socket of detection insert the earphone or the data wire of described portable terminal, if detect, then described portable terminal is switched to described earphone signal transmission channel or data line signal transmission channel in good time, carry out the transmission of earphone signal or data line signal.
Described step c realizes the switching of described earphone signal transmission channel or data line signal transmission channel by analog switch.
Described analog switch has three groups, first group of analog switch connects the left receiver shell fragment of described baseband processor and described earphone socket respectively, second group of analog switch connects the right receiver shell fragment of described baseband processor and described earphone socket respectively, and the 3rd group of analog switch connects Mike's shell fragment of described baseband processor and described earphone socket respectively.
Detecting data wire among the described step c, whether to insert earphone socket be to realize by level transferring chip, described level transferring chip is connected between described baseband processor and the earphone socket, and the level signal that takes place when described data wire is inserted described earphone socket is converted into interrupt signal and imports described baseband processor.
Adopt a kind of mobile terminal circuit and its implementation with multifunctional earphone socket of the present invention, the earphone socket that it comprises is with the headset plug and the data wire plug coupling of described portable terminal; And, described baseband processor and described earphone socket are switched between earphone signal transmission channel and data line signal transmission channel by analog switch unit; When data wire detecting unit of the present invention detected data wire insertion earphone socket, described baseband processor was controlled the data line signal transmission channel that described analog switch unit switches to described baseband processor and described earphone socket.The present invention utilizes standardized earphone socket, has realized the function of the earphone and the data wire sharing criteria interface of portable terminal, has reduced cost.
Description of drawings
Fig. 1 is the side sectional view that earphone of the present invention inserts earphone socket;
Fig. 2 is the circuit block diagram of mobile terminal circuit one embodiment of the present invention.
Embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
With reference to Fig. 1, standard headphone plug 10 from left to right is defined as successively: left receiver (HPL) 11, right receiver (HPR) 12, Mike (MIC) 13, ground connection (GND) 14.In order to realize the earphone socket 20 among the shared Fig. 1 of earphone cord and data wire, the plug (being preferably USB plug) of data wire also is defined as (not shown): VBUS, USB_D-, USB_D+, GND (ground connection) from left to right.So left receiver (HPL) 11, right receiver (HPR) 12, Mike (MIC) 13 and corresponding VBUS, USB_D-, USB_D+ distinguish a section of shared described earphone socket 20, can be defined as VBUS/HPL (the left receiver shell fragment 21 of sharing earphone socket 20), USB_D-/HPR (the right receiver shell fragment 22 of sharing earphone socket 20), USB_D+/MIC (Mike's shell fragment 23 of sharing earphone socket 20), GND (grounding elastic part 24 of sharing earphone socket 20) with these four sections.
With reference to Fig. 2, baseband chip adopts the SC6600H of spreadtrum company, 3 groups of analog switches adopt the PI3A3159ZCEX of Pericom, Level Shift (level transferring chip) adopts the transistor DTC143ZM of Rohm, earphone socket 20 adopts the 4 DNA mitochondrial DNA sound earphone sockets of the Φ 2.5mm of standard, 3 groups of analog switches in the present embodiment are analog switch unit of the present invention in addition, and Level Shift (level transferring chip) cooperates the control of described baseband chip to realize Data Detection of the present invention unit.HPL inputs to the input of analog switch 1, and another input of analog switch 1 is unsettled, and its output is connected to the left receiver shell fragment 21 of earphone socket 20; USB_D_ and HPR input to analog switch 2, and output is connected to the right receiver shell fragment 22 of earphone socket 20; USB_D+ and MIC input to analog switch 3, and output is connected to Mike's shell fragment 23.3 groups of above-mentioned analog switch unifications are by the Switch signal controlling of baseband chip SC6600H, when SC6600H identify insertion be the usb data line time, SC6600H draws high Switch, has only USB_D+, USB_D-to be connected with earphone socket 20, realizes usb data line function; When SC6600H identify insertion be earphone cord the time, SC6600H drags down Switch, has only HPL, HPR, MIC to be connected with earphone socket 20, realizes ear-phone function.
The process of the insertion of above-mentioned baseband chip SC6600H identification usb data line is: when inserting the usb data line, VBUS/HPL pin input voltage is 5V, the 5V signal inserts interrupt signal VBUS_INT and inputs to Level Shift (level transferring chip) as the usb data line, the level signal of 5V is converted to the interrupt signal of 3V, and inputs to baseband chip SC6600H and inform that it has data wire to insert.Baseband chip can be drawn high analog switch control signal (Switch) level after receiving the message that the usb data line inserts, data line signal transmission channel (USB path) is opened, have only USB_D-, USB_D+ signal to input to earphone socket 20, realize usb data line function by analog switch; When inserting earphone, baseband chip can drag down analog switch control signal (Switch) level, and earphone signal transmission channel (voice-frequency channel) is opened, and has only HPL, HPR, MIC signal to input to earphone socket 20, realizes ear-phone function.
On the other hand, the present invention also provides a kind of method that realizes the portable terminal multifunctional earphone socket, and described method comprises based on the baseband processor control of portable terminal:
The headset plug of a, the earphone socket that makes described portable terminal and described portable terminal and data wire plug coupling;
B, the earphone signal transmission channel of setting up described baseband processor and earphone socket and data line signal transmission channel;
Whether c, the described earphone socket of detection insert the earphone or the data wire of described portable terminal, if detect, then described portable terminal is switched to described earphone signal transmission channel or data line signal transmission channel (switching) in good time, carry out the transmission of earphone signal or data line signal by described analog switch.
As an embodiment, described analog switch has three groups, first group of analog switch connects the left receiver shell fragment of described baseband processor and described earphone socket respectively, second group of analog switch connects the right receiver shell fragment of described baseband processor and described earphone socket respectively, and the 3rd group of analog switch connects Mike's shell fragment of described baseband processor and described earphone socket respectively.
In addition, detecting data wire among the described step c, whether to insert earphone socket be to realize by level transferring chip, described level transferring chip is connected between described baseband processor and the earphone socket, and the level signal that takes place when described data wire is inserted described earphone socket is converted into interrupt signal and imports described baseband processor.
It is pointed out that a kind of mobile terminal circuit and a kind of method that realizes the portable terminal multifunctional earphone socket with multifunctional earphone socket of the present invention, both are identical or similar on principle and specific embodiment, so repeating part repeats no more.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of above embodiment.

Claims (7)

1, a kind of mobile terminal circuit with multifunctional earphone socket is characterized in that, comprising:
Baseband processor is carried out the signal transmission in order to each unit of controlling described circuit;
Earphone socket is with the headset plug and the data wire plug coupling of described portable terminal;
Analog switch unit, its input connects described baseband processor, and output connects described earphone socket, in order to described baseband processor and described earphone socket are switched between earphone signal transmission channel and data line signal transmission channel;
The data wire detecting unit, in order to detect the signal that takes place when data wire inserts described earphone socket, if detect, then described baseband processor is controlled the data line signal transmission channel that described analog switch unit switches to described baseband processor and described earphone socket.
2, circuit as claimed in claim 1, it is characterized in that, described analog switch unit comprises three groups of analog switches, first group of analog switch connects the left receiver shell fragment of described baseband processor and described earphone socket respectively, second group of analog switch connects the right receiver shell fragment of described baseband processor and described earphone socket respectively, and the 3rd group of analog switch connects Mike's shell fragment of described baseband processor and described earphone socket respectively.
3, circuit as claimed in claim 1 or 2, it is characterized in that, described data wire detecting unit comprises the level transferring chip that is connected between described baseband processor and the earphone socket, and the level signal that takes place when described data wire is inserted described earphone socket is converted into interrupt signal and imports described baseband processor.
4, a kind of method that realizes the portable terminal multifunctional earphone socket, described method is characterized in that based on the baseband processor control of portable terminal, comprising:
The headset plug of a, the earphone socket that makes described portable terminal and described portable terminal and data wire plug coupling;
B, the earphone signal transmission channel of setting up described baseband processor and earphone socket and data line signal transmission channel;
Whether c, the described earphone socket of detection insert the earphone or the data wire of described portable terminal, if detect, then described portable terminal is switched to described earphone signal transmission channel or data line signal transmission channel in good time, carry out the transmission of earphone signal or data line signal.
5, method as claimed in claim 4 is characterized in that, described step c realizes the switching of described earphone signal transmission channel or data line signal transmission channel by analog switch.
6, method as claimed in claim 5, it is characterized in that, described analog switch has three groups, first group of analog switch connects the left receiver shell fragment of described baseband processor and described earphone socket respectively, second group of analog switch connects the right receiver shell fragment of described baseband processor and described earphone socket respectively, and the 3rd group of analog switch connects Mike's shell fragment of described baseband processor and described earphone socket respectively.
7, as claim 4 or 5 or 6 described methods, it is characterized in that, detecting data wire among the described step c, whether to insert earphone socket be to realize by level transferring chip, described level transferring chip is connected between described baseband processor and the earphone socket, and the level signal that takes place when described data wire is inserted described earphone socket is converted into interrupt signal and imports described baseband processor.
CN200910056195A 2009-08-10 2009-08-10 Mobile terminal circuit with multifunctional earphone socket and implementation method thereof Pending CN101626412A (en)

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Application Number Priority Date Filing Date Title
CN200910056195A CN101626412A (en) 2009-08-10 2009-08-10 Mobile terminal circuit with multifunctional earphone socket and implementation method thereof

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Application Number Priority Date Filing Date Title
CN200910056195A CN101626412A (en) 2009-08-10 2009-08-10 Mobile terminal circuit with multifunctional earphone socket and implementation method thereof

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102307258A (en) * 2011-08-18 2012-01-04 华为终端有限公司 Communication method between primary device and accessory device, device thereof and system thereof
CN103813231A (en) * 2014-03-05 2014-05-21 北京君正集成电路股份有限公司 Method, intelligent device, system and plug for judging access signals
WO2015006888A1 (en) * 2013-07-19 2015-01-22 中名(东莞)电子有限公司 Socket technology for preventing double audio sources from being input to headphone
CN105552654A (en) * 2016-02-01 2016-05-04 广东欧珀移动通信有限公司 Headphone plug, headphone socket and play control method and device
CN105740070A (en) * 2016-01-29 2016-07-06 广东欧珀移动通信有限公司 Quick button recognition method and terminal
CN106716981A (en) * 2014-09-29 2017-05-24 高通股份有限公司 Electronics interface for device headset jack
CN109359079A (en) * 2018-10-16 2019-02-19 福建实达电脑设备有限公司 A kind of the simulation pull-plug device and method of automatic maintenance USB connection

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KR100595629B1 (en) * 2003-12-12 2006-06-30 엘지전자 주식회사 Dual mode universal serial bus memory apparatus and mobile communication terminal supporting the same
EP1768398A1 (en) * 2005-09-26 2007-03-28 Topseed Technology Corp. Projector having built-in universal serial bus interface
CN2919453Y (en) * 2006-06-13 2007-07-04 深圳万利达电子工业有限公司 MP3 player with USB signal interface
CN100432964C (en) * 2005-02-08 2008-11-12 台均科技(深圳)有限公司 Audio/USB signal multiplexing line, broadcasting memory and multiplexing transmitting broadcasting memory system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100595629B1 (en) * 2003-12-12 2006-06-30 엘지전자 주식회사 Dual mode universal serial bus memory apparatus and mobile communication terminal supporting the same
CN100432964C (en) * 2005-02-08 2008-11-12 台均科技(深圳)有限公司 Audio/USB signal multiplexing line, broadcasting memory and multiplexing transmitting broadcasting memory system
EP1768398A1 (en) * 2005-09-26 2007-03-28 Topseed Technology Corp. Projector having built-in universal serial bus interface
CN2919453Y (en) * 2006-06-13 2007-07-04 深圳万利达电子工业有限公司 MP3 player with USB signal interface

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102307258A (en) * 2011-08-18 2012-01-04 华为终端有限公司 Communication method between primary device and accessory device, device thereof and system thereof
WO2015006888A1 (en) * 2013-07-19 2015-01-22 中名(东莞)电子有限公司 Socket technology for preventing double audio sources from being input to headphone
CN103813231A (en) * 2014-03-05 2014-05-21 北京君正集成电路股份有限公司 Method, intelligent device, system and plug for judging access signals
CN106716981A (en) * 2014-09-29 2017-05-24 高通股份有限公司 Electronics interface for device headset jack
CN105740070A (en) * 2016-01-29 2016-07-06 广东欧珀移动通信有限公司 Quick button recognition method and terminal
CN105740070B (en) * 2016-01-29 2019-07-02 广东欧珀移动通信有限公司 A kind of fast pushbutton recognition method and terminal
CN105552654A (en) * 2016-02-01 2016-05-04 广东欧珀移动通信有限公司 Headphone plug, headphone socket and play control method and device
CN109359079A (en) * 2018-10-16 2019-02-19 福建实达电脑设备有限公司 A kind of the simulation pull-plug device and method of automatic maintenance USB connection
CN109359079B (en) * 2018-10-16 2021-05-14 福建实达电脑设备有限公司 Simulation plug-in device and method for automatically maintaining USB connection

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