WO2012075786A1

WO2012075786A1 - Method and multi-mode terminal for earphone detection

Info

Publication number: WO2012075786A1
Application number: PCT/CN2011/075225
Authority: WO
Inventors: 冯博
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-12-09
Filing date: 2011-06-02
Publication date: 2012-06-14
Also published as: CN102148897B; CN102148897A

Abstract

A method and a multi-mode terminal for earphone detection are provided in the invention. The method includes that: the multi-mode terminal initiates a switch of audio path from a first base band processor MODEM to a second MODEM; the multi-mode terminal sends a first command to the second MODEM, wherein the first command is used to inform the second MODEM about the connection setup time of the audio path; according to the time after which the connection of the audio path is setup, the second MODEM performs the detection of the earphone and/or the key of the earphone. With the present invention, the user experience is improved.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to an earphone detection method and a multimode terminal. BACKGROUND At present, a terminal (especially a mobile terminal, such as a mobile phone, exemplified by a mobile phone as an example) generally supports access of a headset. The so-called ordinary headphones refer to headphones without a microphone (mic). Ordinary headphones have a 氐 level after inserting the phone because there is no mic, and the headphones with mic are high after being inserted into the phone. Moreover, a headphone button can be provided on the earphone, and the earphone button is used to implement a certain function, for example, answering a call or hanging up the phone. When the earphone button is pressed, it is also low level, so the mobile phone will mistake the low level after the ordinary earphone is inserted as the earphone button, thus causing a false alarm operation. In a single-mode terminal, since the relevant module in the mobile phone directly detects the plug-in state of the earphone, the usual processing method is: When the earphone is inserted, the module determines that the level changes from a high level to a low level, and is considered to be a normal earphone. , then mask the report of the headset button. The patent "CN200910188779.3" mentions a method for preventing misjudgment of the earphone button detection, but the method only processes the fluctuation of the level during the insertion of the earphone, the level fluctuation after the insertion of the earphone and the ordinary earphone. The situation after the insertion is not involved. A method for preventing the malfunction of the earphone button is also mentioned in the patent "CN200610058166.4". The method detects the change of the headphone signal level within a predetermined length of time by adding an anti-shake process. This method is effective for a single-mode machine, but no matter which of the above methods can solve the multi-mode terminal (for example, a dual-mode terminal) The problem of false positives. SUMMARY OF THE INVENTION A primary object of the present invention is to provide an earphone detecting method and a multimode terminal to solve at least the above problems. According to an aspect of the present invention, a headset detecting method is provided, including: a multimode terminal initiating conversion of an audio path from a first baseband processor MODEM to a second MODEM; the multimode terminal transmitting to the second MODEM a first command, wherein the first command is used to notify the second MODEM to obtain a time when the audio channel is turned on; and the second MODEM performs the earphone and/or after obtaining the audio channel according to the time Detection of the headset button. The method further includes: when one of the first MODEM and the second MODEM is in a master state, the multimode terminal sends a second command to the MODEM in a non-master state, where The second command is used to indicate that the MODEM in the non-master state does not perform the detection of the earphone button, and the master state indicates that the MODEM is in a state of being connected to the audio channel. The detecting, by the second MODEM, the earphone and/or the earphone button after the audio channel is turned on according to the time includes: the second MODEM performing the earphone and/or after a predetermined period of time after obtaining the audio channel is turned on. Detection of the headset button. The detecting, by the second MODEM, the earphone and/or the earphone button comprises: when the second MODEM detects a high level, confirming that the earphone with the microphone is connected, allowing the polling to detect the earphone button of the earphone If the second MODEM detects a low level, it is determined that the earphone with no microphone or the earphone with the microphone button pressed is not allowed to start polling the earphone for detecting the earphone. Whether the button is pressed. The command sent by the multimode terminal to the MODEM is an AT command. The first MODEM is a CDMA MODEM, and the second MODEM is a GSM MODEM. According to another aspect of the present invention, another headset detecting method is provided, including: one of a plurality of MODEMs in a multimode terminal being in a master state, the master state indicating that the MODEM is in an audio path The state of being turned on; the multimode terminal sends a command to the MODEM in the non-master state, wherein the command is used to indicate that the MODEM in the non-master state does not perform the detection of the earphone button. According to still another aspect of the present invention, a multimode terminal is provided, including: an application processor AP, a first MODEM, and a second MODEM, the application processor being configured to initiate a MODEM from a first modem to a Sending a first command to the second MODEM when converting the audio path of the MODEM, wherein the first command is used to notify the second MODEM to obtain a time when the audio channel is turned on; and the second MODEM is set to The detection of the earphone and/or the earphone button is performed after the audio channel is turned on according to the time. The multimode terminal AP is further configured to: send a second command to the MODEM in the non-master state, in a case where one of the first MODEM and the second MODEM is in a master state, where The second command is used to indicate that the MODEM in the non-master state does not perform the detection of the earphone button, and the master state indicates that the MODEM is in a state of being connected to the audio channel. According to still another aspect of the present invention, a multimode terminal is provided, including: an AP, a plurality of MODEMs, wherein the AP is set to be in a case where one of the plurality of MODEMs is in a master state Sending a command to the MODEM in the non-master state, wherein the command is used to indicate that the MODEM in the non-master state does not perform the detection of the headset button, and the master state indicates that the MODEM is in communication with the audio channel. status. With the present invention, the multimode terminal initiates a conversion of the audio path from the first baseband processor MODEM to the second MODEM; the multimode terminal transmits a first command to the second MODEM, wherein the first command The second MODEM is configured to notify the time when the audio channel is turned on; the second MODEM performs the detection of the earphone and/or the earphone button after the audio channel is turned on according to the time. The problem of false alarms in the earphone detection in the multimode terminal in the prior art is solved, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, BRIEF DESCRIPTION OF THE DRAWINGS In the drawings: FIG. 1 is a schematic diagram of a dual mode terminal according to an embodiment of the present invention; FIG. 2 is a schematic diagram showing a level condition of a conventional earphone and a mic earphone after insertion according to an embodiment of the present invention; FIG. 4 is a schematic diagram showing a situation in which a general-purpose earphone is inserted and a button detection condition according to an embodiment of the present invention; FIG. 5 is a schematic diagram of the present invention according to the present invention; FIG. 6 is a flow chart 2 of an earphone detecting method according to an embodiment of the present invention; FIG. 7 is a flowchart of a headphone detecting method according to a preferred embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The following embodiments can be applied to multi-mode terminals. The following embodiments are based on Global System for Mobile Communication (GSM) and Code Division Multiple Access (CDMA) dual-mode terminals. The example will be described, but it is not limited thereto. 1 is a schematic diagram of a dual mode terminal according to an embodiment of the present invention. As shown in FIG. 1, the dual mode terminal includes: an application processor (AP), a CDMA MODEM, and a GSM MODEM, where the application processor is configured to run an application part. (For example, Android system and user program); MODEM is a baseband processor, which is set to run a protocol stack part and a driver part, for example, a CDMA protocol stack or a GSM protocol stack. The CDMA and GSM dual-mode machines in Figure 1 illustrate that after power-on, the CDMA MODEM and the GSM MODEM operate separately, and both parties are detecting the state of the headphones. Since the ordinary earphone has no mic, the earphone plug has a three-section type. When the ordinary earphone is inserted from the insertion to the completion, the level changes through a low, high, and low level, and then it is always at the level. With a mic headset, the headphone plug is a four-section type. When the headphone is plugged in to completion, the level changes by one degree and high, and then it is always high. In addition, when the button of the earphone is pressed, the level will become low, and when the button is raised, the level will become high, and the change of the level determines whether the button of the earphone is pressed. Description will be made below with reference to Figs. 2 and 3. 2 is a schematic diagram showing the level of a normal earphone and a mic earphone after insertion according to an embodiment of the present invention. As shown in FIG. 2, FIG. 2a shows a level change when a normal earphone is inserted, as shown in FIG. 2a. From the beginning of the insertion to the completion, the level has a low, high, low change; Figure 2b shows the level change with the mic headset inserted, as shown in Figure 2b, from the beginning to the completion, the level has A low, high change. FIG. 3 is a schematic diagram showing the level of the earphone button with the mic earphone according to the embodiment of the present invention. When the earphone button is pressed, it will become a low level; the earphone button bounces and returns to a high level. When using the CDMA side call, the analog switch hits the CDMA MODEM side, and the audio path is connected to the CDMA MODEM side (for convenience of description, the state in which the audio path is connected is referred to as the master state), and the CDMA MODEM side detects In the real level situation, the GSM side is a high level simulated by the AP, so the GSM MODEM will not report the headset button message (because it has been detected high level). Similarly, when using the GSM side to make a call, the analog switch hits the GSM side. At this time, the GSM side detects the true level, and the CDMA side is a high level simulated by the AP. The CDMA MODEM side does not receive a message on the 4" headphone button. However, FIG. 4 shows a case where, after the headphone is inserted, if the audio path is switched from the CDMA MODEM side to the GSM MODEM side, the level detected by the GSM MODEM suddenly changes from the AP analog high level to the actual level. Value, if jt匕 is inserted into a normal earphone, GSM MODEM detects a low level, it is considered that the earphone button is pressed, which causes a false alarm, which is caused by the inability to use ordinary headphones. In the embodiment, a headset detection method (including earphone detection and/or earphone button detection) is provided to solve the above problem. FIG. 5 is a flowchart 1 of a headset detection method according to an embodiment of the present invention, as shown in FIG. The process includes the following steps: Step S502: The multimode terminal initiates a conversion of an audio path from a first MODEM (eg, CDMA MODEM) to a second MODEM (eg, GSM MODEM); Step S504, the multimode terminal to the second MODEM Sending a first command, wherein the first command is used to notify the second MODEM to obtain the time when the audio channel is turned on; and in step S506, the second MODEM performs the detection of the earphone and/or the earphone button after the audio channel is turned on according to the time. Through the above steps, the time for detecting the second MODEM is directly detected after the audio path is turned on, thereby detecting the true low level, thereby shielding the period from the virtual high level to the real low level, thereby solving the false alarm. The problem. Preferably, in the implementation, the compatible processing, that is, the time of the anti-shake processing (ie, the predetermined length of time) may be added, and then the determination is made. For example, the second MODEM performs the detection of the earphone and/or the earphone button after a predetermined period of time after the audio channel is turned on. For the AP using the AT command, in this embodiment, an AT command needs to be extended. When the audio channel is switched, the AP uses the AT command to notify the MODEM, so that the MODEM can obtain the exact time when the audio channel is turned on. After this time point, add compatible processing, that is, after removing the anti-shake processing time, judge the actual level value. If it is high level, it is considered to be a headset with mic, and then allow polling to start detecting whether the earphone button has Press. If it is low, it is considered to be a normal earphone, or a headset with a mic but the button is pressed. At this time, it is not allowed to start polling and detecting the earphone button, so there is no case that the earphone is not mistaken. It is manifested that the ordinary earphone can also work normally. That is, when the audio path is switched, the AP uses the AT command to notify the MODEM, so that the MODEM can obtain the exact time of the audio path conversion, thereby adding compatible processing after this time point, which not only achieves the purpose of being compatible with the ordinary earphone, but also prevents it. The effect of level fluctuations on the detection of the earphone button. In addition to the above, there is also a case where when the analog switch hits the CDMA MODEM side, the high level sent by the AP to the GSM MODEM sometimes fluctuates due to the interference, which may also result in the earphone button. False positives. In this embodiment, another headset detection method is provided to solve the problem. FIG. 6 is a flowchart 2 of a headset detection method according to an embodiment of the present invention. As shown in FIG. 6, the process includes the following steps: Step S602 And one of the plurality of MODEMs in the multimode terminal is in a master state; in step S604, the multimode terminal sends a command to the MODEM in the non-master state, where the command is used to indicate that the mode is in a non-master state. The MODEM below does not detect the headset button. Through the above steps, since the MOEM in the non-master state is notified that the detection of the earphone button is not performed, the problem of false alarm of the earphone button can be solved. If there are only two MODEMs, then one of the first MODEM and the second MODEM is in the master state, and the multimode terminal sends a command to the MODEM in the non-master state, wherein the command is used to indicate that it is in the non-master state. The MODEM in the master control state does not detect the headset button. For an AP using the AT command, the AT command can be used to notify the GSM MODEM analog switch on the CDMA MODEM side. The GSM MODEM is not allowed to detect the button of the headset, thus fundamentally solving the headset key false alarm caused by such problems. . Also provided in this embodiment is a multimode terminal, comprising: an application processor AP, a first MODEM and a second MODEM, wherein the application processor is configured to initiate a slave modem (also referred to as a baseband processor) Transmitting a first command to the second MODEM when the MODEM is switched to the audio path of the second MODEM, wherein the first command is used to notify the second MODEM to obtain the time when the audio channel is turned on; the second MODEM is set to be obtained according to time The headphones and/or earphone buttons are detected after the audio channel is turned on. In this embodiment, another terminal is further provided, including: an AP, multiple MODEMs, where the AP is set to be in a non-master state in a case where one of the plurality of MODEMs is in a master state The MODEM sends a command, where the command is used to indicate that the MODEM in the non-master state does not detect the headset button. FIG. 7 is a flowchart of a method for detecting an earphone according to a preferred embodiment of the present invention. As shown in FIG. 7, the process includes the following steps: Step S701: In the respective MODEM, an AT command is extended for the AP to call when the audio channel is switched; Step S702, when the AP switches the audio channel, the AP is called to notify the MODEM that the analog switch is specifically connected to which MODEM; Step S703 After receiving the AT command, the MODEM delays for a period of time to filter out the change of the level of the earphone during the insertion process; in step S704, the MODEM determines the level value, and if it is the high level, the process goes to step S705. If it is a low level, the process goes to step S706; in step S705, the MODEM starts polling the state of the earphone button, that is, detects the level change, and if it is low, reports the earphone button to press, and if it is high, reports the earphone button to bounce. Step S706, the MODEM considers that it is a normal earphone, and does not poll the state of the earphone button, thereby fundamentally avoiding the false alarm of the earphone button. Through this process, the AT command is extended, and the AP is notified of the MODEM by the AT command when switching the audio channel. After receiving the AT command, the MODEM is compatible with the level value according to the level value, and achieves compatibility with the ordinary earphone. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

1. A method for detecting a headset, comprising:

The multimode terminal initiates a conversion from the first baseband processor MODEM to the audio path of the second MODEM; the multimode terminal sends a first command to the second MODEM, wherein the first command is used to notify the The second MODEM obtains the time when the audio channel is turned on;

The second MODEM performs the detection of the earphone and/or the earphone button after the audio channel is turned on according to the time.

2. The method according to claim 1, further comprising:

When the one of the first MODEM and the second MODEM is in a master state, the multimode terminal sends a second command to the MODEM in the non-master state, where the second command is used The detection of the earphone button is not performed by the MODEM indicating that it is in the non-master state, and the master state indicates that the MODEM is in a state of being connected to the audio channel.

3. The method according to claim 2, wherein the detecting, by the second MODEM, the earphone and/or the earphone button after the obtaining the audio path is turned on according to the time comprises:

The second MODEM performs the detection of the earphone and/or the earphone button after a predetermined period of time after the audio channel is turned on.

The method according to claim 1 or 3, wherein the detecting of the earphone and/or the earphone button by the second MODEM comprises: when the second MODEM detects a high level, confirming that the access is A headset with a microphone that allows polling to detect whether the headset button of the headset is pressed;

When the second MODEM detects a low level, it is determined that the earphone with no microphone or the earphone with the microphone button pressed is not allowed to start polling to detect whether the earphone button of the earphone is pressed. .

The method according to claim 1 or 2, wherein the command sent by the multimode terminal to the MODEM is an AT command.

6. The method according to claim 1, wherein the first MODEM is a CDMA MODEM, and the second MODEM is a GSM MODEM.

7. A method for detecting headphones, including:

One of the plurality of MODEMs in the multimode terminal is in a master state, and the master state indicates that the MODEM is in a state of being connected to the audio channel;

The multimode terminal sends a command to the MODEM in the non-master state, wherein the command is used to indicate that the MODEM in the non-master state does not perform the detection of the earphone button.

8. A multimode terminal, comprising: an application processor AP, a first MODEM, and a second MODEM,

The application processor is configured to send a first command to the second MODEM when initiating a transition from the first modem MODEM to the audio path of the second MODEM, wherein the first command is used to notify the second The MODEM obtains the time when the audio channel is turned on; the second MODEM is set to detect the earphone and/or the earphone button after the audio channel is turned on according to the time.

9. The multimode terminal according to claim 8, wherein

The multimode terminal AP is further configured to send a second command to the MODEM in the non-master state, in a case where one of the first MODEM and the second MODEM is in a master state, where The second command is used to indicate that the MODEM in the non-master state does not perform the detection of the earphone button, and the master state indicates that the MODEM is in a state of being connected to the audio channel.

10. A multimode terminal, comprising: an AP, a plurality of MODEMs, wherein the AP is configured to be in a non-master state if one of the plurality of MODEMs is in a master state The MODEM sends a command, where the command is used to indicate that the MODEM in the non-master state does not perform the detection of the earphone button, and the master state indicates that the MODEM is in a state of being connected to the audio channel.