WO2016045265A1

WO2016045265A1 - Mobile phone and automatic call answering method thereof

Info

Publication number: WO2016045265A1
Application number: PCT/CN2015/070673
Authority: WO
Inventors: 陈琼
Original assignee: 惠州Tcl移动通信有限公司
Priority date: 2014-09-22
Filing date: 2015-01-14
Publication date: 2016-03-31
Also published as: CN104301460A

Abstract

Disclosed in the present invention are a mobile phone and an automatic call answering method thereof. The mobile phone comprises a front face and a back face, wherein a microphone is arranged on the front face, and when the mobile phone is in a communication state, the human face approaches to the microphone to make a call through the microphone. The method comprises that: when the mobile phone is in an incoming call state, a sonar generator sends ultrasonic wave signals to the external space corresponding to the front face of the mobile phone; the ultrasonic wave signals reflected to the front face are received by the microphone; the traveling distance of the ultrasonic wave signals is acquired according to the ultrasonic wave signals reflected to the front face and serves as the distance between the human face and the front face; the distance changing situation is determined; if the value of the distance gradually becomes smaller and smaller, and is smaller than or equal to the preset distance, the incoming call is automatically answered; if the value of the distance is larger than the preset distance, the ultrasonic wave signals reflected to the front face continues to be received by the microphone. By the described means, the call can be automatically answered under any environment in the present invention, and user experience is improved.

Description

Mobile phone and method for automatically answering the same

【技术领域】[Technical Field]

The present invention relates to the field of communications technologies, and in particular, to a mobile phone and a method for automatically answering a call.

【背景技术】【Background technique】

With the rapid spread of handheld mobile devices and the need for users to intelligentize handheld mobile devices, the requirements are further enhanced. Developers are committed to designing more intelligent features that make them more user-friendly. For example, when the mobile phone calls, the phone is automatically answered by measuring the distance between the mobile phone and the face, which greatly facilitates the user. In the prior art, in order to make more and more dazzling APP as a bright spot, a photosensitive sensor is generally used to measure the distance between the mobile phone and the face.

This limits the use environment. If it is in a dark environment, it is not convenient to operate.

【发明内容】 [Summary of the Invention]

The technical problem to be solved by the present invention is to provide a mobile phone and a method for automatically answering a call, which can realize the function of automatically answering a call under any environment.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a method for automatically answering a call by a mobile phone, wherein the mobile phone includes a front side and a back side, wherein a microphone is disposed on the front side, and the face is close to the microphone when the mobile phone is in a call state. To make a call through the microphone, the method includes: when the mobile phone is in an incoming call state, sending an ultrasonic signal to the external space corresponding to the front of the mobile phone through the sonar generator; receiving the ultrasonic signal reflected back to the front through the microphone; The frontal ultrasonic signal is converted into a digital signal by an analog to digital signal; the distance of the converted ultrasonic signal is calculated as the distance between the face and the front surface; the distance change is judged; if the distance value is smaller and smaller, and less than or equal to the preset The distance is automatically connected to the incoming call; if the distance is greater than the preset distance, the ultrasonic signal that is reflected back to the front is continuously received through the microphone; the sonar generator and the microphone are turned on and off according to the state of the mobile phone.

Wherein, the microphones are at least two, and the step of receiving the ultrasonic signal reflected back to the front side through the microphone comprises: receiving the ultrasonic signals reflected back to the front side by the at least two microphones respectively.

The step of converting the ultrasonic signal reflected back to the front side into a digital signal comprises: respectively performing analog-to-digital conversion of the ultrasonic signals received by the at least two microphones into digital signals; calculating a path distance of the converted ultrasonic signals, The step of the distance between the face and the front surface specifically includes: calculating the path distance of the converted ultrasonic signal separately; taking the average of the sum of the path distances as the distance between the face and the front.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a method for automatically answering a call by a mobile phone, wherein the mobile phone includes a front side and a back side, wherein a microphone is disposed on the front side, and the face is close to the microphone when the mobile phone is in a call state. To make a call through the microphone, the method includes: when the mobile phone is in an incoming call state, sending an ultrasonic signal to the external space corresponding to the front of the mobile phone through the sonar generator; receiving the ultrasonic signal reflected back to the front through the microphone; Back to the front of the ultrasonic signal to obtain the distance of the ultrasonic signal, as the distance between the face and the front; determine the distance change; if the distance is smaller and smaller, and less than or equal to the preset distance, the call is automatically turned on; If the value is greater than the preset distance, the ultrasonic signal that is reflected back to the front is continuously received through the microphone.

Wherein, the step of obtaining the path distance of the ultrasonic wave according to the ultrasonic signal reflected back to the front side comprises: performing analog-to-digital conversion of the ultrasonic signal reflected back to the front side into a digital signal; and calculating a path distance of the converted ultrasonic signal.

The step of obtaining the path distance of the ultrasonic wave according to the ultrasonic signal reflected back to the front side comprises: respectively converting the ultrasonic signals received by the at least two microphones into a digital signal; respectively calculating a path distance of the converted ultrasonic signal; The average of the sum of the path distances is the distance between the face and the front.

The method further includes: controlling the opening and closing of the sonar generator and the microphone according to the state of the mobile phone.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a mobile phone, which comprises: a microphone disposed on the front of the mobile phone, and configured to face the microphone when the mobile phone is in a call state, to perform through the microphone a sonar generator for transmitting an ultrasonic signal to an external space corresponding to the front of the mobile phone when the mobile phone is in an incoming call state; the microphone further receives an ultrasonic signal that is reflected back to the front; and the distance obtaining module is configured to be reflected Back to the front of the ultrasonic signal to obtain the distance of the ultrasonic signal, as the distance between the face and the front; the processor, used to determine the distance change; if the distance is smaller and smaller, and less than or equal to the preset distance, then automatically If the value of the distance is greater than the preset distance, the ultrasonic signal reflected back to the front side is continuously received through the microphone.

The distance obtaining module further includes: an analog-to-digital converter for performing analog-to-digital conversion of the ultrasonic signal reflected back to the front side into a digital signal; and a calculator for calculating a path distance of the converted ultrasonic signal.

Wherein, the microphones are at least two, and at least two microphones respectively receive the ultrasonic signals reflected back to the front side.

Wherein, the analog-to-digital converter respectively converts the ultrasonic signals received by the at least two microphones into a digital signal; the calculator separately calculates the path distance of the converted ultrasonic signals, and further takes the average of the sum of the path distances as a person The distance between the face and the front.

The mobile phone further includes a switch control module for controlling the opening and closing of the sonar generator and the microphone according to the state of the mobile phone.

The beneficial effects of the present invention are: different from the prior art, the mobile phone of the present invention sends an ultrasonic signal to the external space corresponding to the front side of the mobile phone through the sonar generator, and further receives the ultrasonic signal reflected back to the front side through the microphone. Then, according to the ultrasonic signal reflected back to the front side, the distance of the ultrasonic signal is obtained, and the distance between the face and the front is further determined, and if the distance is smaller and smaller than or equal to the preset distance, the automatic connection is automatically performed. The incoming call, if the value of the distance is greater than the preset distance, continues to receive the ultrasonic signal reflected back to the front through the microphone. Through the above manner, the present invention can realize automatic answering call in any environment, and improves the user experience.

【附图说明】 [Description of the Drawings]

1 is a schematic diagram of an internal structure of a mobile phone according to an embodiment of the present invention;

Figure 2 is a schematic view showing the external structure of the mobile phone shown in Figure 1;

FIG. 3 is a flowchart of a method for automatically answering a call by a mobile phone according to an embodiment of the present invention.

【具体实施方式】【detailed description】

1 and FIG. 2, FIG. 1 is a schematic diagram showing the internal structure of a mobile phone according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing the external structure of the mobile phone shown in FIG. As shown in FIGS. 1 and 2, the mobile phone of this embodiment includes a microphone 11, a sonar generator 12, a distance acquisition module 13, a processor 14, and an input and output module 15.

The input/output module 15 is electrically connected to the microphone 11, the sonar generator 12, the distance acquisition module 13, and the processor 14, respectively, as an interface for inputting and outputting signals.

The microphone 11 is disposed on the front side 110 of the mobile phone 10 for bringing the face closer to the microphone 11 when the mobile phone 10 is in a call state to make a call through the microphone 11. The microphone of this embodiment is a MEMS (Micro Electro Mechanical System) microphone.

The sonar generator 12 is configured to emit an ultrasonic signal to an external space corresponding to the front surface 110 of the mobile phone 10 when the mobile phone 10 is in an incoming call state. The microphone 11 further receives an ultrasonic signal that is reflected back to the front side 110.

The distance acquisition module 13 is configured to obtain a path distance of the ultrasonic signal from the ultrasonic signal reflected back to the front surface as the distance between the human face and the front surface 110.

The processor 14 is configured to determine the change of the distance. If the value of the distance is smaller and smaller than or equal to the preset distance, the incoming call is automatically turned on; if the value of the distance is greater than the preset distance, the receiving is continued through the microphone 11 The ultrasonic signal is reflected back to the front side.

Since the mobile phone 10 is placed close to the ear (ie, the face) when the user wants to answer the call, the microphone 11 of the mobile phone is used for the call. Therefore, in this embodiment, it is determined whether the phone is automatically connected by judging the change of the distance between the mobile phone and the face. In other words, when it is determined that the distance is gradually decreasing, the mobile phone 10 is slowly approaching the face, and when the distance is less than or equal to a preset value, for example, 3 cm, the call is automatically answered. It does not require the user to manually connect the phone, which brings convenience to the user.

It should be understood that when the distance between the mobile phone 10 and the human face is greater than the preset distance, the telephone will not be connected regardless of whether the change of the distance is smaller or larger or larger.

In addition, the embodiment of the present invention utilizes the MEMS microphone 11 to receive the ultrasonic signal reflected back to the front surface 110 of the mobile phone 10. On the one hand, the acoustic sensitivity of the MEMS microphone 11 can be utilized to support the characteristics of the higher bandwidth sound signal, in particular It is a feature that the sound above 20KHz can be effectively captured, and the ultrasonic signal emitted by the sonar generator 12 is better obtained, so that the data is more accurate. On the other hand, the use of the microphone 11 is not affected by any environment, and can be operated in any environment, improving the user's experience.

In order to further increase the accuracy of the data, the microphone 11 of the embodiment is at least two, and at least two microphones 11 respectively receive the ultrasonic signals reflected back to the front side. As shown in FIG. 2, the present embodiment provides four microphones 11 which are respectively located at four top corner positions of the front surface 110 of the mobile phone 10.

In this embodiment, the distance acquisition module 13 further includes an analog to digital converter 131 and a calculator 132. The analog to digital converter 131 is used to analog to digitally convert the ultrasonic signal reflected back to the front side 110 into a digital signal. The calculator 132 is used to calculate the path distance of the converted ultrasonic signal.

In particular, this embodiment will exemplify the use of two microphones 11 at the top of the front side 110 of the handset 10 to receive ultrasonic signals that are reflected back to the front. Among them, the sonar generator 12 is located in the middle of the two microphones 11.

The two microphones 11 at the top of the front side 110 of the handset 10 receive ultrasonic signals that are reflected back to the front, respectively. The analog-to-digital converter 131 respectively performs analog-to-digital conversion of the ultrasonic signals received by the two microphones 11 into digital signals. The calculator 132 calculates the path distance of the converted ultrasonic signal, respectively, and further takes the average of the sum of the path distances as the distance between the face and the front side 110 of the mobile phone 10.

Thereby, the ultrasonic signal reflected back to the front side is received by the at least two microphones 11, and the accuracy of the data can be further improved.

In addition, since the microphone 11 has a unique high sampling rate support, the sound generated by the fine flow or vibration of the air can be captured, and a relatively significant electric frequency change can be generated. Therefore, the microphone 11 of the present embodiment also receives the air. The frequency signal emitted by the vibration, the processor 14 further eliminates the frequency signal emitted by the vibration of the air. Thereby, the interference caused by the vibration of the air can be removed, and the accuracy of the data is further improved.

In this embodiment, the input and output module 15 further controls the opening and closing of the sonar generator 12 and the microphone 11 according to the state of the mobile phone 10. Specifically, the mobile phone 10 further includes a radio frequency receiving module 16 and an antenna. When the mobile phone 10 calls, it sends the received incoming call signal to the processor 14. After receiving the incoming call signal, the processor 14 controls the input and output module. 15 goes to control the sonar generator 12 and the microphone 11 to turn on. If the incoming call signal is not received, the sonar generator 12 and the microphone 11 are controlled to be turned off, thereby saving power.

It should be understood that, in the case of an incoming call by a network telephone or other means, the mobile phone 10 can also receive an incoming call signal through another module, using a wifi module or the like.

As described above, in the embodiment, when the mobile phone 10 is in an incoming call state, the microphone 11 receives the ultrasonic signal reflected by the sonar generator 12 and reflected back to the front surface 110 of the mobile phone 10, and then analyzes according to the ultrasonic signal, if the analysis is performed The distance between the face and the front side 110 of the mobile phone 10 is getting smaller and smaller, and less than or equal to the preset distance, the incoming call is automatically turned on. Convenient for the user. And the microphone 11 can be applied to any environment, improving the user experience.

Further, in this embodiment, the distance between the face and the front of the mobile phone 10 can be further determined when the mobile phone 10 is in a call state. Specifically, the sonar generator 12 continues to operate while the handset 10 is in a call state, i.e., emits an ultrasonic signal, and the microphone 11 continues to receive ultrasonic signals that are reflected back to the front side 110 of the handset 10. If the distance between the face and the front side 110 of the mobile phone 10 is larger and larger than the preset distance according to the ultrasonic signal, the processor 14 controls the backlight of the mobile phone screen to be turned on, and analyzes the face and the mobile phone 10 When the distance of the front side 110 is getting smaller and smaller, and less than or equal to the preset distance, the backlight of the control phone screen is turned off. Therefore, the user needs to operate the screen in the call state, for example, when the information is input according to the language, the backlight is turned on in time to facilitate the user's operation. And further, when the user only answers the call and does not need to operate the screen of the mobile phone, the backlight is turned off to achieve the effect of power saving.

The invention also provides a method for automatically answering a call by a mobile phone based on the mobile phone described above. See Figure 3 for details.

As shown in FIG. 3, the method for automatically answering a call by a mobile phone includes the following steps:

Step S1: When the mobile phone is in an incoming call state, an ultrasonic signal is sent to the external space corresponding to the front side of the mobile phone through the sonar generator.

Step S2: Receiving an ultrasonic signal reflected back to the front side through the microphone. The microphone of this embodiment is a MEMS (Micro Electro Mechanical System) microphone. And at least two microphones are included, for example, the mobile phone described above includes 4 microphones.

In this step, in order to improve the accuracy of the data, specifically, the ultrasonic signals reflected back to the front side are respectively received by at least two microphones.

Step S3: obtaining the path distance of the ultrasonic signal according to the ultrasonic signal reflected back to the front surface as the distance between the face and the front surface.

In this step, specifically, the ultrasonic signal reflected back to the front side is subjected to analog-to-digital conversion into a digital signal, and the path distance of the converted ultrasonic signal is further calculated.

If the step S2 is to receive the ultrasonic signals reflected back to the front side by the at least two microphones respectively. Then, the step is to separately convert the ultrasonic signals received by the at least two microphones into digital signals, and separately calculate the path distance of the converted ultrasonic signals, and further take the average value of the sum of the path distances as the face and the front. the distance.

Step S4: judging the change of the distance;

Step S5: If the value of the distance becomes smaller and smaller, and is less than or equal to the preset distance, the incoming call is automatically turned on.

Since the user is going to pick up the phone, the phone is placed close to the ear (ie, the face), and the phone is used to make a call. Therefore, in this step, when it is judged that the distance is gradually decreasing, the mobile phone is slowly approaching the face, and when the distance is less than or equal to a preset value, for example, 3 cm, the call is automatically answered. It does not require the user to manually connect the phone, which brings convenience to the user.

Step S6: If the value of the distance is greater than the preset distance, continue to receive the ultrasonic signal reflected back to the front side through the microphone.

Therefore, in this embodiment, the MEMS microphone is used to receive the ultrasonic signal reflected back to the front surface of the mobile phone, and on the one hand, the higher acoustic sensitivity of the MEMS microphone can be utilized to support the characteristics of the higher bandwidth sound signal, especially higher than The 20KHz sound can be effectively captured, and the ultrasonic signal from the sonar generator can be better obtained, making the data more accurate. On the other hand, the use of the microphone is not affected by any environment and can be operated in any environment, improving the user experience.

In addition, since the microphone has a unique high sampling rate support, the sound generated by the fine flow or vibration of the air can be captured, and a relatively obvious electric frequency change can be generated. Therefore, the present embodiment further receives the vibration generated by the air through the microphone. The frequency signal then eliminates the frequency signal emitted by the vibration of the air. Thereby, the interference caused by the vibration of the air can be removed, and the accuracy of the data is further improved.

In addition, the embodiment controls the opening and closing of the sonar generator and the microphone according to the state of the mobile phone. In this way, the sonar generator and the microphone can be turned on when the mobile phone is in an incoming call state, and the sonar generator and the microphone are turned off when the mobile phone is in a non-incoming state, thereby saving power.

In addition, in this embodiment, the distance between the face and the front of the mobile phone can be further determined when the mobile phone is in a call state. Specifically, the sonar generator continues to be in a working state when the mobile phone is in a call state, that is, an ultrasonic signal is emitted, and the microphone also continues to receive an ultrasonic signal reflected back to the front of the mobile phone. If the distance between the face and the front of the mobile phone is increased according to the ultrasonic signal, and the distance is greater than the preset distance, the processor controls the backlight of the mobile phone screen to be turned on, and the distance between the face and the front of the mobile phone is analyzed. The smaller the backlight is, and less than or equal to the preset distance, the backlight of the control phone screen is turned off. Therefore, the user needs to operate the screen in the call state, for example, when the information is input according to the language, the backlight is turned on in time to facilitate the user's operation. And further, when the user only answers the call and does not need to operate the screen of the mobile phone, the backlight is turned off to achieve the effect of power saving.

In summary, the present invention receives the ultrasonic signal reflected by the sonar generator 12 and reflected back to the front surface 110 of the mobile phone 10 through the microphone 11 when the mobile phone 10 is in the incoming call state, and then analyzes according to the ultrasonic signal, if the analysis is performed The distance between the face and the front side 110 of the mobile phone 10 is getting smaller and smaller, and less than or equal to the preset distance, the incoming call is automatically turned on. Convenient for the user. And the microphone 11 can be applied to any environment, improving the user experience.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation of the present invention and the contents of the drawings may be directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A method for automatically answering a call by a mobile phone, the mobile phone includes a front side and a back side, wherein the front side is provided with a microphone, and when the mobile phone is in a call state, a human face is close to the microphone to make a call through the microphone, wherein The method includes:

When the mobile phone is in an incoming call state, an ultrasonic signal is sent to an external space corresponding to the front side of the mobile phone by a sonar generator;

Receiving, by the microphone, an ultrasonic signal that is reflected back to the front surface;

And ultrasonically converting the ultrasonic signal reflected back to the front surface into a digital signal;

Calculating a path distance of the converted ultrasonic signal as a distance between the face and the front surface;

Judging the change in the distance;

If the value of the distance is smaller and smaller and less than or equal to the preset distance, the incoming call is automatically turned on;

If the value of the distance is greater than a preset distance, continuing to receive an ultrasonic signal reflected back to the front surface through the microphone;

The sonar generator and the microphone are turned on and off according to the state of the mobile phone.
The method according to claim 1, wherein said microphones are at least two, and said step of receiving, by said microphone, an ultrasonic signal reflected back to said front side comprises:

Ultrasonic signals that are reflected back to the front side are received by at least two of the microphones, respectively.
The method of claim 2 wherein said step of analog to digitally converting said ultrasonic signal reflected back to said front side into a digital signal comprises:

Performing analog-to-digital conversion of the ultrasonic signals received by the at least two of the microphones into digital signals;

The step of calculating the distance of the converted ultrasonic signal as the distance between the face and the front surface specifically includes:

Calculating the path distance of the converted ultrasonic signal separately;

The average of the sum of the path distances is taken as the distance between the face and the front face.
A method for automatically answering a call by a mobile phone, the mobile phone includes a front side and a back side, wherein the front side is provided with a microphone, and when the mobile phone is in a call state, a human face is close to the microphone to make a call through the microphone, wherein The method includes:

When the mobile phone is in an incoming call state, an ultrasonic signal is sent to an external space corresponding to the front side of the mobile phone by a sonar generator;

Receiving, by the microphone, an ultrasonic signal that is reflected back to the front surface;

Obtaining a path distance of the ultrasonic signal according to an ultrasonic signal reflected back to the front surface as a distance between the face and the front surface;

Judging the change in the distance;

If the value of the distance is smaller and smaller and less than or equal to the preset distance, the incoming call is automatically turned on;

If the value of the distance is greater than the preset distance, the ultrasonic signal reflected back to the front surface is continuously received through the microphone.
The method according to claim 4, wherein said step of obtaining a path distance of said ultrasonic wave based on an ultrasonic signal reflected back to said front surface comprises:

Performing an analog-to-digital conversion of the ultrasonic signal reflected back to the front surface into a digital signal;

Calculating the path distance of the converted ultrasonic signal.
The method according to claim 5, wherein said microphones are at least two, and said step of receiving, by said microphone, an ultrasonic signal reflected back to said front side comprises:

Ultrasonic signals that are reflected back to the front side are received by at least two of the microphones, respectively.
The method according to claim 6, wherein said step of obtaining a path distance of said ultrasonic wave based on an ultrasonic signal reflected back to said front surface comprises:

Performing analog-to-digital conversion of the ultrasonic signals received by the at least two of the microphones into digital signals;

Calculating the path distance of the converted ultrasonic signal separately;

The average of the sum of the path distances is taken as the distance between the face and the front face.
The method of claim 4 wherein the method further comprises:

The sonar generator and the microphone are turned on and off according to the state of the mobile phone.
A mobile phone, wherein the mobile phone comprises:

a microphone disposed on a front surface of the mobile phone, configured to be close to the microphone when the mobile phone is in a call state, to make a call through the microphone;

a sonar generator, configured to send an ultrasonic signal to an external space corresponding to a front surface of the mobile phone when the mobile phone is in an incoming call state;

The microphone further receives an ultrasonic signal that is reflected back to the front side;

a distance obtaining module, configured to obtain a path distance of the ultrasonic signal according to an ultrasonic signal reflected back to the front surface, as a distance between the human face and the front surface;

a processor, configured to determine the change of the distance; if the value of the distance is smaller and smaller, and less than or equal to the preset distance, the incoming call is automatically turned on; if the value of the distance is greater than a preset distance, The ultrasonic signal reflected back to the front side is then continued through the microphone.
The mobile phone according to claim 9, wherein the distance acquisition module further comprises:

An analog-to-digital converter for performing analog-to-digital conversion of the ultrasonic signal reflected back to the front surface into a digital signal;

A calculator for calculating a path distance of the converted ultrasonic signal.
The handset of claim 10 wherein said microphones are at least two, said at least two microphones respectively receiving ultrasonic signals that are reflected back to said front side.
The mobile phone according to claim 11, wherein the analog-to-digital converter respectively performs analog-to-digital conversion of the ultrasonic signals received by the at least two of the microphones into digital signals;

The calculator separately calculates the path distance of the converted ultrasonic signal, and further takes the average of the sum of the path distances as the distance between the face and the front face.
The mobile phone according to claim 9, wherein said mobile phone further comprises a switch control module for controlling opening and closing of said sonar generator and said microphone in accordance with a state of said mobile phone.