WO2022032639A1

WO2022032639A1 - Charging box for earphones

Info

Publication number: WO2022032639A1
Application number: PCT/CN2020/109186
Authority: WO
Inventors: Linyong FAN
Original assignee: Harman International Industries, Incorporated
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2022-02-17
Also published as: US20230188883A1; EP4196983A1; EP4196983A4; CN116097351A

Abstract

The present disclosure provides a charging box for wireless earphones, comprising: a battery; a plurality of contacts configured to be in contact with the wireless earphones when the wireless earphones are held in the charging box; a charging circuit configured to electrically connect the battery to the plurality of contacts for charging the wireless earphones; an audio sensor configured to sense environment sounds and provide signals representative of the environment sound; a processor configured to receive and process the signals and send an information to the wireless earphones when the processor determines that the environment sounds contains predefined sounds. The present disclosure further provides a charging box kit comprising a charging box and a pair of wireless earphones configured to be held in the charging box. The present disclosure provides a method for notifying a wearer of earphones, comprising the steps of: providing the charging box kit; receiving the environment sounds and generating signals representative of the environment sounds by using the audio sensor in the charging box; receiving and processing the signals representative of the environment sounds by using the processor in the charging box; sending an information to the wireless earphones when the processor determines that the environment sounds contains predefined sounds; generating sound in the wireless earphones to notify the wearer of the earphones the existence of the predefined sound in the environment sounds.

Description

CHARGING BOX FOR EARPHONES

TECHNICAL FIELD

This disclosure relates in general to a charging box for earphones, and particularly to a charging box for earphones which can provide alert to the wearer of the earphones. This disclosure also relates to a charging box kit including a charging box and earphones. This disclosure also relates to a method for notifying a wearer of earphones.

BACKGROUND ART

Currently, in-ear earphones and ANC earphones are more and more popular because they can reduce or shield most environment sounds from being heard so that the wearer of the earphones can enjoy music etc. even in a relatively noisy environment. However, such earphones may also shield some useful or important environment sounds that the wearer of the earphones should be aware of. For example, if the shielded sound is an alert sound or a bell ringing, the wearer of the earphones may be unaware of something important or dangerous is happening nearby, which is undesirable.

A charging box is more and more widely used as it is very convenient for charging and holding wireless earphones while the earphones are not in use. However, most of the current charging box only have the basic function of charging and holding the wireless earphones.

There is a need for wireless in-ear earphones and ANC earphones that can shield environment sounds while allowing the wearer to notice some useful or important environment sounds.

SUMMARY OF THE INVENTION

According to one aspect of the disclosure, a charging box for wireless earphones is provided, comprising: a battery; a plurality of contacts configured to be in contact with the wireless earphones when the wireless earphones are held in the charging box; a charging circuit configured to electrically couple the battery to the plurality of contacts for charging the wireless earphones; an audio sensor configured to sense environment sounds and provide signals representative of the environment sounds; a processor configured to receive and process the signals and send an information to the wireless earphones when the processor determines that the environment sounds contains predefined sounds.

Optionally, the predefined sounds are selected from a group consisting of sound of car horn, sound of door bell ringing, alarm, beep.

Optionally, the charging box further comprises a blue tooth interface, and the information is sent to the earphones via the blue tooth interface.

Optionally, the processor is configured to perform an algorithm of Natural Language Processing to determine whether or not the environment sound contains any of the predefined sounds.

Optionally, the processor is a SoC including LBE interface and the blue tooth interface is the LBE interface in the SoC.

Optionally, the predefined sounds are sound samples pre-stored in the charging box.

Optionally, the processor sends the information directly to the earphones.

Optionally, the processor sends the information to a cellphone, which in turn sends the information to the earphone.

According to another aspect of the disclosure, a charging box kit is provided, comprising a charging box of any of the above and a pair of wireless earphones configured to be held in the charging box.

Optionally, the wireless earphones are in-ear earphones or ANC earphones.

Optionally, the wireless earphones are configured to generate an alert sound upon the receipt of the information from the charging box.

Optionally, the earphones comprises: an audio sensor configured to sense environment sounds and provide signals representative of the environment sounds; a processor configured to receive and process the signals upon the receipt of the information from the charging box, and the wireless earphones are configured to generate an alert sound when the processor of the earphones determines that the environment sounds contains predefined sounds.

According to another aspect of the disclosure, a method for notifying a wearer of earphones is provided, comprising the steps of: providing the charging box kit of any of the above; receiving the environment sounds and generating signals representative of the environment sounds by using the audio sensor in the charging box; receiving and processing the signals representative of the environment sounds by using the processor in the charging box; sending an information to the wireless earphones when the processor determines that the environment sounds contains predefined sounds; generating sound in the wireless earphones to notify the wearer of the earphones the existence of the predefined sound in the environment sounds.

Optionally, the method further comprises the steps of: receiving the environment sounds and generating signals representative of the environment sounds by using the audio sensor in the earphones after the receipt of the information from the charging box; receiving and processing the signals representative of the environment sounds by using the processor in the earphones.

Others systems, method, features and advantages of the disclosure will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the disclosure, and be protected by the following claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be better understood with reference to the flowing drawings and description. The components in the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the disclosure. Moreover, in the figures, like reference numerals designate corresponding parts throughout the different views.

Fig. 1 is a block diagram showing the structure of a charging box for wireless earphones according to one embodiment of the present invention.

Fig. 2 shows an exemplary embodiment of the connection between the charging box of the present invention and earphones and mobile phone.

Fig. 3 shows another embodiment of the connection between the charging box of the present invention and earphones and mobile phone.

Fig. 4 is an exemplary determination process showing how of the charging box determines the existence of any of the predefined sounds in the environment sounds.

Fig. 5 shows an exemplary confirmation or double-checking process of the earphones.

BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, the preferred embodiment of the present disclosure will be described in more detail with reference to the accompanying drawings. In the following description of the present disclosure, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present disclosure rather unclear.

As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises” , “comprising” , “includes” , and/or “including” , as used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” and the symbol “/” are meant to include any and all combinations of one or more of the associated listed items. Additionally, while the terms first, second, etc. may be used herein to describe various elements, components, steps or calculations, these elements, components, steps or calculations should not be limited by these terms, rather these terms are only used to distinguish one element, component, step or calculation from another. For example, a first component could be termed a second component, similarly a first calculation could be termed a second calculation; similarly a first step could be termed a second step; all without departing from the scope of this disclosure.

To clarify the use in the pending claims and to hereby provide notice to the public, the phrases “at least one of <A> , <B> , ... and <N> ” or “at least one of <A> , <B> , ... <N> , or combinations thereof” are defined by the Applicant in the broadest sense, superseding any other implied definitions herebefore or hereinafter unless expressly asserted by the Applicant to the contrary, to mean one or more elements selected from the group comprising A, B, ... and N, that is to say, any combination of one or more of the elements A, B, ... or N including any one element alone or in combination with one or more of the other elements which may also include, in combination, additional elements not listed.

Fig. 1 is a block diagram showing the structure of a charging box for wireless earphones according to one embodiment of the present invention. As shown in Fig. 1, the charging box comprises a processor 102, a battery 104, a charging circuit 106, a charging circuit 108, an audio sensor 110 and LEDs 114. The charging circuit 106 is configured to electrically couple the battery 104 to an external power supply, such as a portable power source, a DC power source etc., so as to charge the battery 104 by using the power supplied from the external power supply. The charging circuit 108 is configured to electrically couple the battery 106 to a pair of

contacts

116a, 116b, which are configured to be in contact with charging contacts of wireless earphones when the wireless earphones are positioned in place in the charging box. The charging circuit 108 includes a boost converter which is configured to boost the voltage of the battery 104 so that it can charge the wireless earphones held in the charging box via the

contacts

116a, 116b. The processor 102 can control the charging process of the charging circuit 106 and the charging circuit 108. The LEDs 114 is configured to indicate the status of the charging box. The charging operation of a charging box is well known in the art, and the detailed description of the charging operation is omitted for the sake of brevity.

The audio sensor 110 is configured to sense and receive environment sounds and generate signals representative of the environment sounds. The processor 102 is configured to receive the signals representative of the environment sound from the audio sensor 110, and process the received signals to determine whether or not the environment sounds contains certain kind of predefined sounds. The predefined sounds can be certain useful or important sounds that the wearer of the earphones should be aware of, such as, sound of door bell ringing, alarm sound, beep, sound of car horn or other useful or important sound. If the wearer of the earphones did not notice the sound, he or she may miss certain useful or important information or may not know something dangerous is happening.

Fig. 2 shows an exemplary embodiment of the connection between the charging box of the present invention and earphones 210 and mobile phone 310. As shown in Fig. 2, the processor 102 is wirelessly connected to the earphones 210 via the antenna 112 by using Bluetooth Low Energy (BLE) and thus can communicate with the earphones 210. When the processor 102 determines that the environment sounds contains any of the predefined sounds, it will send information to the earphones 210. As shown in Fig. 2, the earphones 210 are wirelessly connected to the mobile phone 310 via classical Bluetooth (BT) .

Fig. 3 shows another embodiment of the connection between the charging box of the present invention and earphones 210 and mobile phone 310. As shown in Fig. 3, the processor 102 is wirelessly connected to the mobile phone 310 via the antenna 112 by using Bluetooth Low Energy (BLE) and thus can communicate with the mobile phone 310. The mobile phone 310 is in turn wirelessly connected to the earphones 210 via classical Bluetooth (BT) . When the processor 102 determines that the environment sound contains the predefined sounds, it will send information to the mobile phone 310, which in turn sends the information to the earphones 210.

Fig. 4 is an exemplary determination process showing how of the charging box determines the existence of any of the predefined sounds in the environment sounds. The process starts at step S101. In some embodiments, the process can be started upon the removal of the earphones from the charging box. That is, the process as shown in Fig. 4 will be started when the earphones are removed from the charging box, and will be stopped when the earphones are put back into the charging box. In other embodiments, the process can be started at other event, such as, the process can starts when the earphones start to play, and when the earphones’ play stops, the process stops too.

Then the process goes to initializing step S102, at which the processor 102 does some initializing work, such as setting up one or more predefined sounds for the process and a threshold for the matching degree. The predefined sounds can be set up, e.g., by reading from a storage device which stores the predefined sounds.

Then the process goes to step S103, at which the audio sensor senses and receives the environment sounds and generates signals representative of the environment sounds. The processor 102 receives the signals representative of the environment sound from the audio sensor 110.

Then the process goes to step S104, at which the processor 102 processes the signals representative of the environment sound by using NLP (Natural Language Processing) algorithm, which generates a result indicating the matching degree of the environment sounds to the predefined sounds. The NLP algorithm is known in the art and is commercially available, and the detailed description thereof is omitted for the sake of brevity.

Then the process goes to step S105, at which the processor 102 determines whether or not the matching degree generated in S104 reaches or exceeds a predefined threshold. If the matching degree generated in S104 does not reach or exceed the predefined threshold, which means that the environment sounds does not contain any sound that has enough similarity with any of the predefined sounds, then the process will go back to S103. If the matching degree generated in S104 does reach or exceed the predefined threshold, which means that the environment sounds does contain at least one sound that has enough similarity with one of the predefined sounds, the process will goes to step S106.

At S106, the processor 102 sends information to the earphones 210 or mobile phone 310 via BLE, notifying that the environment sounds contains at least one of the predefined sounds. Then the process goes back to S103.

In the embodiment shown in Fig. 2, after the processor 102 sends information to the earphones 210, the earphones 210 will generate an alert sound, such as beeping, to notify the wearer of the earphones something important or dangerous is happening. In the embodiment shown in Fig. 3, after the processor 102 sends information to the mobile phone 310, which in turn sends information to the earphones 210, the earphones 210 will generate an alert sound, such as beeping, to notify the wearer of the earphones something important or dangerous is happening. Alternatively, the earphones 210 may generate a voice, indicating the existence of one of predefined sounds nearby.

As described above, the charging box of the present invention includes an audio sensor, which can sense and receive the environment sound and generate signals representative of the environment sound, and the processor that can process the signals and determine whether or not the environment sound contains any of predefined sounds. When it is determined that the environment sound contains one or more of the predefined sounds, the processor will send information to the earphones, which in turn notifies the wearer of the earphones the existence of the predefined sounds in the environment sounds. The charging box of the present invention is preferably used with wireless in-ear earphones or ANC earphones. As such, the wearer of the earphones can enjoy music etc. even in a relatively noisy environment since the in-ear earphones or ANC earphones can reduce or shield most environment sounds from being heard. In the meantime, the wearer of the earphones will be notified by the earphones the existence of the predefined sound in the environmental sound, such as alert sounds or bell rings, so that the wearer of the earphones can be aware of anything important or dangerous is happening. In addition, since the audio sensor and the process as shown in Fig. 4 is performed by the processor in the charging box, rather than a processor in the earphones, the battery time of the earphones will not be shortened or effected.

The predefined sounds can be, e.g., the sound of car horn, the sound of doorbell ringing etc. For example, when a person walks in the street while wearing earphones, he can enjoy music and will be notified whenever there is a sound of car horn nearby. For example, when a person is at home while wearing earphones, he or she can enjoy music and does not need to worry about missing any doorbell ringing.

When a person wears the earphones, the charging box may sometimes be put in his or her bag or pocket. Since the charging box is in a bag or pocket, the environment sounds received by the audio sensor of the charging box may be somewhat unclear due to the bag or packet surrounding the charging box. Thus, it may be desirable to have a confirmation or double check process after the earphones receives the information from the charging box indicating that the environment sounds contains at least one of the predefined sounds. In addition, it may also be desirable to have a confirmation or double check process to simply reduce or avoid a misinformation from the charging box.

Fig. 5 shows an exemplary confirmation or double-checking process of the earphones. The process starts at step S201. The process is started upon the receipt of the information from the charging box that indicates the existence of any of the predefined sounds in the environment sounds.

Then the process goes to step S202, at which an audio sensor in the earphones senses and receives the environment sounds and generates signals representative of the environment sounds. The processor in the earphones 210 receives the signals representative of the environment sound from the audio sensor. Alternatively or additionally, the audio sensor in the earphones may senses and receives the environment sound and generates signals representative of the environment sound, and stores the latest signal in a buffer all the time. In this situation, the processor in the earphones may reads the latest signal from the buffer.

Then the process goes to step S203, at which the processor in the earphones 201 processes the signals representative of the environment sound by using NLP (Natural Language Processing) algorithm, which generates a result indicating the matching degree of the environment sound to the predefined sounds. The NLP algorithm is known in the art and is commercially available, and the detailed description thereof is omitted for the sake of brevity.

Then the process goes to step S204, at which the processor in earphones 201 determines whether or not the matching degree generated in S203 reaches or exceeds a predefined threshold. If the matching degree generated in S203 does not reach or exceed the predefined threshold, which means that the environment sounds does not contain any sound that has enough similarity with any of the predefined sounds, the process will go to S206, which is the end of the process. If the matching degree generated in S203 does reach or exceed the predefined threshold, which means that the environment sounds does contain at least one sound that has enough similarity with one of the predefined sounds, the process will goes to step S205.

At S205, the earphones 210 will generate an alert sound, such as beeping, notifying the wearer of the earphones that the environment sounds contains at least one of the predefined sounds. Then the process goes back to S206, which is the end of the process.

In the embodiment shown in Fig. 3, the process shown in Fig. 5 may be performed in the mobile phone 310, e.g., by an audio sensor and a processor in the mobile phone 310, which send information to the earphones 210, notifying the existence of the predefined sound in the environments if result of the determination step S204 is YES.

By using the process as shown in Fig. 5, the misinformation of the existence of the predefined sounds in the environment sounds can be reduced or eliminated.

In some embodiments of the present invention, the predefined sounds can be sound samples pre-stored in a storage device of the earphones by the manufacturer of the charging box. In some further embodiments of the present invention, the user of the earphones and charging box may select one or more of pre-stored sounds as the predefined sounds, e.g., by using an APP in the mobile phone. In some further embodiments of the present invention, the user of the charging box may customize the predefined sounds in the charging box, e.g., by using an APP in the mobile phone, which can download some sound samples from the internet, and transmit them to the charging box as customized predefined sounds.

In the embodiments shown in Figs. 2 and 3, the charging box of the present invention communicates with the earphones or mobile phone via BLE. However, the present invention is not limited thereto, and the charging box can communicates with the earphones or mobile phone via any appropriate wireless technology, such as classical Bluetooth (BT) , infrared transmission technology.

In the embodiments shown in Figs. 4 and 5, a matching degree indicating the closeness of the environment sound to the predefined sounds is generated in the processing steps S104, S203, and whether or not the environment sounds contain any predefined sound is determined in step S105, S204. However, the present invention is not limited thereto, and the result generated in step S104, S203 may directly indicate whether or not the environment sounds contain any of the predefined sounds.

In a preferred embodiment, the processor of the present invention is a SoC (System on Chip) having BLE. However, the present invention is not limited thereto and the processor can be any appropriate type, such as an application-specific integrated circuit (ASIC) , a digital signal processor (DSP) , a central processing unit (CPU) , a graphics processing unit (GPU) , a field-programmable gate array (FPGA) . As shown, the charging box according to some embodiments of the present invention includes an audio sensor, however, the present invention is not limited thereto and can include any appropriate audio sensor, such as a microphone, as long as it can sense the environment sounds and provide signals representative of the environment sounds.

Systems and methods have been described in general terms as an aid to understanding details of the invention. In some instances, well-known structures, materials, and/or operations have not been specifically shown or described in detail to avoid obscuring aspects of the invention. In other instances, specific details have been given in order to provide a thorough understanding of the invention. One skilled in the relevant art will recognize that the invention may be embodied in other specific forms, for example to adapt to a particular system or apparatus or situation or material or component, without departing from the spirit or essential characteristics thereof. Therefore the disclosures and descriptions herein are intended to be illustrative, but not limiting, of the scope of the invention. Accordingly, the disclosure is not to be restricted except in light of the attached claims and their equivalents.

Claims

A charging box for wireless earphones, comprising:

a battery;

a plurality of contacts configured to be in contact with the wireless earphones when the wireless earphones are held in the charging box;

a charging circuit configured to electrically couple the battery to the plurality of contacts for charging the wireless earphones;

an audio sensor configured to sense environment sounds and provide signals representative of the environment sounds;

a processor configured to receive and process the signals and send an information to the wireless earphones when the processor determines that the environment sounds contains predefined sounds.
The charging box of claim 1, wherein the predefined sounds are selected from a group consisting of sound of car horn, sound of door bell ringing, alarm, beep.
The charging box of claim 1, wherein the charging box further comprises a blue tooth interface, and the information is sent to the earphones via the blue tooth interface.
The charging box of claim 1, wherein the processor is configured to perform an algorithm of Natural Language Processing to determine whether or not the environment sound contains any of the predefined sounds.
The charging box of claim 3, wherein the processor is a SoC including LBE interface and the blue tooth interface is the LBE interface in the SoC.
The charging box of claim 1, wherein the predefined sounds are sound samples pre-stored in the charging box.
The charging box of any of claims 1-6, wherein the processor sends the information directly to the earphones.
The charging box of any of claims 1-6, wherein the processor sends the information to a cellphone, which in turn sends the information to the earphone.
A charging box kit, comprising a charging box of any of the preceding claims and a pair of wireless earphones configured to be held in the charging box.
The charging box kit of claim 9, wherein the wireless earphones are in-ear earphones or ANC earphones.
The charging box kit of claim 9, wherein the wireless earphones are configured to generate an alert sound upon the receipt of the information from the charging box.
The charging box kit of claim 9, wherein the earphones comprises:

an audio sensor configured to sense environment sounds and provide signals representative of the environment sounds;

a processor configured to receive and process the signals upon the receipt of the information from the charging box, and the wireless earphones are configured to generate an alert sound when the processor of the earphones determines that the environment sounds contains predefined sounds.
A method for notifying a wearer of earphones, comprising the steps of:

providing the charging box kit of any of claims 9-12;

receiving the environment sounds and generating signals representative of the environment sounds by using the audio sensor in the charging box;

receiving and processing the signals representative of the environment sounds by using the processor in the charging box;

sending an information to the wireless earphones when the processor determines that the environment sounds contains predefined sounds;

generating sound in the wireless earphones to notify the wearer of the earphones the existence of the predefined sound in the environment sounds.
The method of claim 13, further comprising the steps of:

receiving the environment sounds and generating signals representative of the environment sounds by using the audio sensor in the earphones after the receipt of the information from the charging box;

receiving and processing the signals representative of the environment sounds by using the processor in the earphones.