Abstract: Provided are an image sensor and an image output method and application thereof. The image sensor includes an input circuit, configured to perform a first photoelectric conversion on incident light to generate a photoelectric current in an EVS mode working period, and performs s second photoelectric conversion on the incident light to generate photoelectric charges in an APS mode working period; an EVS circuit configured to output a corresponding event signal according to a difference value between a first voltage corresponding to a photoelectric current and a reference voltage; an APS circuit configured to output a corresponding grayscale signal according to a second voltage corresponding to photoelectric charges; and a control circuit configured to output a corresponding APS image according to the grayscale signal and output a corresponding EVS image according to the event signal.

Abstract: The present disclosure relates to an integrated active noise-canceling wireless Bluetooth headphone, which comprises a housing assembly, primary and secondary magnet sets, primary and secondary magnetic conductive sheet sets, an integrated circuit board assembly, a bracket and a tuning net. The primary and secondary magnet sets, the primary and secondary magnetic conductive sheet sets, the integrated circuit board assembly and the bracket are sequentially laminated in the housing assembly; the tuning net is arranged on an outer surface above the housing assembly; the integrated circuit board assembly is integrated; the periphery of the integrated circuit board assembly is exposed outside the housing assembly; a noise-canceling speaker module interface is embedded in the exposed part of the integrated circuit board and electrically connected with the integrated circuit board; and a light-sensing in-ear detector is surface-mounted on the integrated circuit board.

Abstract: A control circuit for a switching converter having a main power switch, the control circuit including: a voltage generation circuit configured to be connected with a common connection terminal of the main power switch and an inductor to receive a drain-source voltage of the main power switch, and to generate a first voltage according to the drain-source voltage; a valley detection circuit configured to generate a valley detection signal according to the first voltage when the drain-source voltage resonates to a valley; and where the control circuit is configured to turn on the main power switch according to the valley detection signal.

Abstract: A control circuit for a resonant converter, that is configured to: adjust a conduction time of one power switch and a conduction time of one corresponding synchronous rectifier switch in the resonant converter in a resonant period detection mode; control a resonance current to cross zero twice during the conduction time of the synchronous rectifier switch; and obtain a resonant period of the resonant converter.

Abstract: A zero-voltage-switching control circuit for a switching power supply having a main power switch and a synchronous rectifier switch, is configured to: control the synchronous rectifier switch to be turned on for a first time period before the main power switch is turned on and after a current flowing through the synchronous rectifier switch is decreased to zero according to a switching operation of the main power switch in a previous switching period of the main power switch; and where a drain-source voltage of the main power switch is decreased when the main power switch is turned on, in order to reduce conduction loss.

Abstract: The present disclosure relates to an image sensor comprising a plurality of pixel circuits each comprising a photodiode connected between ground and a floating diffusion (FD) node, a reset transistor (MRST) connected between a first voltage supply and the floating diffusion (FD) node, and a source follower transistor (MSF), wherein its drain is connected to a second voltage supply, the gate is connected to a floating diffusion (FD) node and the source is connected to a row select transistor (MSEL). The row select transistor (MSEL) is connected between the source of the source follower transistor (MSF) and a common column output. Each pixel circuit is configured to output an output signal corresponding to a light incident on the photodiode. Each pixel circuit includes at least one additional transistor for configuring each pixel circuit to selectively output a linear integration signal or a logarithmic signal.

Abstract: A delta image sensor comprising a plurality of acquisition circuits corresponding to at least one pixel. Each acquisition circuit includes at least one sensor circuit comprising a photosensor to generate a sensor signal, VSIG, depending on a light signal illuminating the photosensor; at least one single slope analogue to digital conversion, A/D, circuit configured to convert a current VSIG to a digital signal, wherein the A/D circuit (12) is configured to use one of a plurality of ramps for the conversion; at least one digital storage circuit configured to store a representation of at least one digital signal corresponding to a previous VSIG; at least one digital comparison circuit configured to compare the level of the stored representation with the current VSIG to detect whether a changed level is present; and at least one digital output circuit configured to generate an event output, in response to the changed level.

Abstract: A delta image sensor comprising an arrangement of pixels and acquisition circuits corresponding to at least one pixel. Each acquisition circuit includes a sensor circuit comprising a photosensor to generate a sensor signal, VSIG, depending on a light signal illuminating the photosensor; at least one analogue to digital conversion, A/D, circuit configured to convert a current VSIG to a digital signal; at least one digital storage circuit configured to store a representation of at least one digital signal corresponding to a previous VSIG; a digital comparison circuit configured to compare the level of the stored representation with the current VSIG to detect whether a changed level is present; and a digital output circuit configured to generate an event output when the level has changed. The repeat rate of the analogue to digital conversion is chosen from one or more repeat rates corresponding to modulation of the light signal.

Abstract: A communication control circuit for a power supply chip, can include: a main control die having a main control circuit; a plurality of sub-control dice configured to respectively receive a control signal sent by the main control die, where each sub-control die comprises a sub-control circuit; and where a reference ground of each sub-control die is different from a reference ground of the main control die, the reference grounds of the plurality of sub-control dice are different with each other, and communication between the main control die and each sub-control die is achieved by a corresponding level conversion circuit.

Abstract: The present invention relates to a delta image sensor comprising an arrangement of pixels and a plurality of acquisition circuits corresponding to at least one pixel and formed as part of an integrated circuit. Each acquisition circuit includes at least one sensor circuit comprising a photosensor configured to generate a sensor signal, VSIG, depending on a light signal illuminating the photosensor of the at least one pixel; at least one analogue to digital conversion, A/D, circuit configured to convert a current VSIG to a digital signal; at least one digital storage circuit configured to store a representation of at least one digital signal corresponding to a previous VSIG; at least one digital comparison circuit configured to compare the level of the stored representation with the current VSIG to detect whether a changed level is present; and at least one digital output circuit configured to generate an event output under the condition of the changed level.

Abstract: A control circuit for a switching converter, can include: a current compensation signal generating circuit configured to generate a current compensation signal based on a current sampling signal representing an inductor current; and a control signal generating circuit configured to adjust a current control parameter of a current control loop in the switching converter according to the current compensation signal, in order to increase power factor (PF) and reduce total harmonic distortion (THD).

Abstract: A control chip applied in a switching power supply, where the switching power supply includes a rectifier circuit for receiving an AC input voltage and generating a rectified voltage, the control chip including: a high-voltage pin; a detection circuit coupled to the high-voltage pin to determine whether the high-voltage pin is coupled to the AC input voltage or the rectified voltage according to a sampling voltage representing a voltage received by the high-voltage pin; and a discharge circuit, where when the high-voltage pin is determined to be coupled to the AC input voltage, the control chip can enable the discharge circuit to discharge a safety capacitor coupled to an input port of the switching power supply after the switching power supply is powered off, and when the high-voltage pin is determined to be coupled to the rectified voltage, the control chip can disable the discharge circuit.

Abstract: A zero-voltage-switching control circuit for a switching power supply having a main power switch and a synchronous rectifier switch, is configured to: control the synchronous rectifier switch to be turned on for a first time period before the main power switch is turned on and after a current flowing through the synchronous rectifier switch is decreased to zero according to a switching operation of the main power switch in a previous switching period of the main power switch; and where a drain-source voltage of the main power switch is decreased when the main power switch is turned on, in order to reduce conduction loss.

Abstract: A switching power supply circuit can include: a transformer having a primary winding and a secondary winding; a resonant capacitor and a resonant inductor coupled in series with the primary winding to form a series structure; a power switch module receiving an input voltage and connecting two terminals of the series structure to form a resonance circuit; an output rectification module coupled to the secondary winding and generating an output voltage; an operating mode control module receiving the input voltage and the output voltage, to control the output rectification module such that the switching power supply circuit is operated in the LLC mode or the AHB mode based on a ratio of the input voltage and the output voltage relative to a predetermined value.

Abstract: Provided is a process of modeling methods organized in racks of a machine learning pipeline to facilitate optimization of performance using modelling methods for implementation of machine learning design in an object-oriented modeling (OOM) framework, the process including: writing classes using object-oriented modelling of optimization methods, modelling methods, and modelling racks; writing parameters and hyper-parameters of the modeling methods as attributes as the modeling methods; scanning modelling racks classes to determine first class definition information; selecting a collection of rack and selecting modeling method objects; scanning modelling method classes to determine second class definition information; assigning racks and locations within the racks to modeling method objects; and invoking the class definition information to produce object manipulation functions that allow access the methods and attributes of at least some of the modeling method objects, the manipulation functions being configur

Abstract: A switching power circuit for charging a battery can include: four switches extending between two ports of a low-frequency AC input voltage and an energy storage circuit, where the energy storage circuit and a primary winding of a transformer are coupled between first and second nodes, the first node is a common node of the first and second switches, and the second node is a common node of the third and fourth switches; a rectification circuit having an input terminal coupled to a secondary winding of the transformer; a DC-DC converter having an input terminal coupled to an output terminal of the rectification circuit, and generates a charging current; and a control circuit that adjusts the charging current by controlling an operation of the DC-DC converter according to a charging requirement, in order to make an average value of the charging current meet the charging requirement.

Abstract: A method of controlling a synchronous rectifier circuit can include: adjusting a falling amplitude of a drive voltage of a synchronous rectifier switch in the synchronous rectifier circuit in a pull-down mode; adjusting a shielding time during which the synchronous rectifier switch is in a turn-off shielding mode and is not to be turned off; turning off the synchronous rectifier switch after a drain-source voltage of the synchronous rectifier switch reaches a turn-off threshold; and where the falling amplitude of the drive voltage in the pull-down mode and the shielding time for a current period are adjusted according to an operation state of the synchronous rectifier switch in a previous period.

Abstract: This application provides an optical power commissioning method, a commissioning system, a control device, and a commissioning station. The commissioning system includes a control device and one or more commissioning stations. The method includes the control device first identifies one or more to-be-commissioned services on which optical power commissioning needs to be performed, the control device sends, based on the to-be-commissioned service, commissioning information to the one or more commissioning stations on which the to-be-commissioned service passes through, where the one or more commissioning stations perform parallel optical power commissioning based on the commissioning information, and the one or more commissioning stations perform optical power commissioning based on the commissioning information. According to this application, a plurality of services and a plurality of commissioning stations can be commissioned concurrently.