Abstract: An apparatus configured to power a battery of an audio system includes a plurality of switches, where the plurality of switches comprises a power switch and a plurality of voltage regulator switches, a microcontroller, and a voltage regulator circuit. The microcontroller is configured to determine whether the power switch is activated. The microcontroller is configured to, in response to determining the power switch is activated, activate the plurality of voltage regulator switches to electrically couple the voltage regulator circuit to the battery.

Abstract: A power circuit for a wireless earphone includes a first charging terminal, a second charging terminal, a charger, a battery circuit, and a control circuit. The charger is enabled via a voltage across the first charging terminal and the second charging terminal. The battery circuit is connected to the charger. The control circuit is connected to the first charging terminal and the battery circuit. The control circuit is configured to enable or disable with a supply of power from the battery circuit based on a control signal provided by the first charging terminal.

Abstract: A charging box for wireless earphones includes a battery; a plurality of contacts configured to be in contact with the wireless earphones when the wireless earphones are provided 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 information to the wireless earphones when the processor determines that the environment sounds contains predefined sounds.

Abstract: Disclosed are an elastomer sleeve for a wireless earphone and a wireless earphone. The elastomer sleeve for the wireless earphone includes: a sleeve body defining a space for accommodating an earphone body of the wireless earphone; a sleeve wing portion formed integrally with the sleeve body and extending outward from the sleeve body; and an antenna formed in the elastomer sleeve and extending from the sleeve body to the sleeve wing portion. The wireless earphone includes an earphone body and one or more elastomer sleeves for detachably connecting to the earphone body and partially enclosing the earphone body.

Abstract: The present disclosure provides a power circuit for a battery powered wearable device. The circuit may include a first switch and a second switch successively coupled between the battery of the wearable device and a power output terminal of the power circuit. The circuit may further include a control unit configured to receive a detection signal indicating that a power switch is switched off, and send, after completing required data processing before the wearable device is powered off based on the detection signal, a first control signal to the first switch, to control the first switch to be switched off and cause the second switch to be switched off, thereby cutting off power supply of the battery via the power output terminal.

Abstract: Disclosed are an elastomer sleeve for a wireless earphone and a wireless earphone. The elastomer sleeve for the wireless earphone includes: a sleeve body defining a space for accommodating an earphone body of the wireless earphone; a sleeve wing portion formed integrally with the sleeve body and extending outward from the sleeve body; and an antenna formed in the elastomer sleeve and extending from the sleeve body to the sleeve wing portion. The wireless earphone includes an earphone body and one or more elastomer sleeves for detachably connecting to the earphone body and partially enclosing the earphone body.

Abstract: The present invention relates to an optical noise removal circuit, an optical receiver, and an optical chip. The optical noise removal circuit includes: a noise filter unit, where an input end of the noise filter unit receives an electrical signal coming from an photoelectric conversion unit, and the noise filter unit is configured to filter out a noise electrical signal, in the electrical signal, that is generated due to ambient light, and output a target pulse signal at an output end; and a comparison unit, where a first input end of the comparison unit is coupled to the output end of the noise filter unit to receive the target pulse signal, and the comparison unit is configured to output a digital signal based on comparison between the target pulse signal and a reference voltage. By implementing the present invention, quality of a received optical signal can be effectively improved.

Abstract: The present application relates to a wireless signal decoding method, which is used to decode an electric signal converted from a wireless signal, where the decoding method includes the following steps: recording a duration of each level of the electric signal; calculating an average value of m maximum durations and an average value of n minimum durations, where m and n are positive integers and are determined by referring to a distribution percentage value of first binary bit values and a distribution percentage value of second binary bit values in data respectively; calculating a decision duration according to the first average value and the second average value; comparing the duration of each level with the decision duration, and according to a comparison result, determining a binary bit value represented by the level; and integrating all binary bit values to restore the data represented by the electric signal.

Abstract: The present invention relates to an optical noise removal circuit, an optical receiver, and an optical chip. The optical noise removal circuit includes: a noise filter unit, where an input end of the noise filter unit receives an electrical signal coming from an photoelectric conversion unit, and the noise filter unit is configured to filter out a noise electrical signal, in the electrical signal, that is generated due to ambient light, and output a target pulse signal at an output end; and a comparison unit, where a first input end of the comparison unit is coupled to the output end of the noise filter unit to receive the target pulse signal, and the comparison unit is configured to output a digital signal based on comparison between the target pulse signal and a reference voltage. By implementing the present invention, quality of a received optical signal can be effectively improved.

Abstract: The present application relates to error retransmission mechanism-included methods, apparatuses, and systems for transmitting and receiving a visible light signal. The transmitting method includes the following steps: during transmission of a visible light signal, when an emitter executes signal transmission on an error sensitive level each time, reading an execution duration of the emitter; comparing the execution duration with a signal duration range; when the execution duration does not fall within the signal duration range, performing signal retransmission; and when the execution duration falls within the signal duration range, continuing signal transmission.

Abstract: The present application relates to an optical communication transmitting apparatus and receiving apparatus. The optical communication transmitting apparatus includes: an encoder, configured to encode and shunt an input signal, to generate multiple synchronous encoded signals; a driver, configured to amplify the multiple encoded signals, to generate multiple drive signals; and multiple light sources, configured to generate multiple synchronous optical signals when driven by the multiple drive signals. The optical communication transmitting apparatus and receiving apparatus provided in the present application make full use of advantages of visible light communication, achieving a rapid communication speed and high security.

Abstract: The present disclosure discloses methods and devices for an optical signal encoding and decoding. The optical signal encoding method includes: reading N-ary data bit by bit, and encoding the data into electric signal units: encoding each different digit in the N-ary data into a different electric signal unit, where high level duration and low level duration in the electric signal unit are Ti1, Ti2, . . . , and Tij respectively, i, j, and N are natural numbers, and the different electric signal units are separated by delimiters; and combining the electric signal units corresponding to the N-ary data into a drive signal, where the drive signal is used for being output in a light form. Instable flashing of emitted light of a terminal device is overcome effectively, and information transmission reliability is further improved.

Abstract: The present application relates to a self-adaptive receiving method, device, and system for a wireless signal, where the receiving method is characterized by: detecting an electric signal, and recording and storing a duration of each level of the electric signal; determining a decision time interval according to the duration of each level, where the decision time interval is used to determine a location of the spacing level between the electric signal groups of the electric signal; comparing the duration of each level with the decision time interval to recognize each electric signal group; when the duration of the level is less than the decision time interval, determining the level as the intragroup time interval and recording the data of the electric signal groups; and when the duration of the level is greater than or equal to the decision time interval, determining the level as the intergroup time interval and confirming an end of the electric signal groups.

Abstract: The present application relates to an optical communication transmitting apparatus and receiving apparatus. The optical communication transmitting apparatus includes: an encoder, configured to encode and shunt an input signal, to generate multiple synchronous encoded signals; a driver, configured to amplify the multiple encoded signals, to generate multiple drive signals; and multiple light sources, configured to generate multiple synchronous optical signals when driven by the multiple drive signals. The optical communication transmitting apparatus and receiving apparatus provided in the present application make full use of advantages of visible light communication, achieving a rapid communication speed and high security.

Abstract: The present application relates to multi-stage amplitude modulation-based methods, apparatuses, and systems for coding and decoding a visible light signal. The coding method includes the following steps: dividing to-be-transmitted information into multiple information units, where each information unit includes multiple bits; converting the multiple information units into multiple electrical signal units indicated by at least three levels, where an interval indicated by a first level in the at least three levels exists between adjacent electrical signal units, and each electrical signal unit uses a combination of other levels in the at least three levels to represent the multiple bits of a corresponding information unit; combining the electrical signal units to obtain a coded electrical signal; and transmitting the coded electrical signal in a visible light signal form.

Abstract: The present disclosure discloses methods and devices for an optical signal encoding and decoding. The optical signal encoding method includes: reading N-ary data bit by bit, and encoding the data into electric signal units: encoding each different digit in the N-ary data into a different electric signal unit, where high level duration and low level duration in the electric signal unit are Ti1, Ti2, . . . , and Tij respectively, i, j, and N are natural numbers, and the different electric signal units are separated by delimiters; and combining the electric signal units corresponding to the N-ary data into a drive signal, where the drive signal is used for being output in a light form. Instable flashing of emitted light of a terminal device is overcome effectively, and information transmission reliability is further improved.

Abstract: The present application discloses a payment system to enhance security of the entire payment system and ensure fund security in a payment process. The technical solution is: in the entire payment system, designing encryption and decryption solutions at a payment end, a consumer end, and an account management server end separately; performing hierarchical encryption on data transmission and storage, and verifying legality of a hardware device of an access system. Compared with a conventional magnetic card payment mode and an online payment mode with a third-party account such as Alipay, the technical solution of the present application improves convenience and security to different extents.

Abstract: The present application relates to a self-adaptive receiving method, device, and system for a wireless signal, where the receiving method is characterized by: detecting an electric signal, and recording and storing a duration of each level of the electric signal; determining a decision time interval according to the duration of each level, where the decision time interval is used to determine a location of the spacing level between the electric signal groups of the electric signal; comparing the duration of each level with the decision time interval to recognize each electric signal group; when the duration of the level is less than the decision time interval, determining the level as the intragroup time interval and recording the data of the electric signal groups; and when the duration of the level is greater than or equal to the decision time interval, determining the level as the intergroup time interval and confirming an end of the electric signal groups.

Abstract: The present application relates to a wireless signal decoding method, which is used to decode an electric signal converted from a wireless signal, where the decoding method includes the following steps: recording a duration of each level of the electric signal; calculating an average value of m maximum durations and an average value of n minimum durations, where m and n are positive integers and are determined by referring to a distribution percentage value of first binary bit values and a distribution percentage value of second binary bit values in data respectively; calculating a decision duration according to the first average value and the second average value; comparing the duration of each level with the decision duration, and according to a comparison result, determining a binary bit value represented by the level; and integrating all binary bit values to restore the data represented by the electric signal.

Abstract: The disclosure relates to a method and an apparatus for receiving a visible light signal. The method includes the following steps: controlling use of a camera as a light signal receiver to capture a group of continuous images covering an emitter, where the emitter emits visible light signals; and obtaining, from the group of continuous images, a visible light signal that comes from the emitter. In the disclosure, because a camera is used to receive a visible light signal, a visible light communication function can be implemented in various devices or systems under a premise that no hardware is newly added or modified.