Abstract: A lighting device includes a light board and a light dimmer circuit. The light board includes multiple first light emitting elements and second light emitting elements. The first light emitting elements are disposed in a first area of the light board. The second light emitting elements are disposed in a second area of the light board. The light dimmer circuit is configured to drive the second light emitting elements to generate flickering lights from the second area of the light board, and is configured to drive the first light emitting elements to generate non-flickering lights from the first area of the light board.

Abstract: A method of forming a semiconductor structure is provided, and includes trimming a first substrate to form a recess on a sidewall of the first substrate. A conductive structure is formed in the first substrate. The method includes bonding the first substrate to a carrier. The method includes thinning down the first substrate. The method also includes forming a dielectric material in the recess and over a top surface of the thinned first substrate. The method further includes performing a planarization process to remove the dielectric material and expose the conductive structure over the top surface. In addition, the method includes removing the carrier from the first substrate.

Abstract: The present disclosure provides a ball tracking system and method. The ball tracking system includes camera device and processing device. The camera device is configured to generate a plurality of video frame data, wherein the video frame data includes image of ball. The processing device is electrically coupled to the camera device and is configured to: recognize the image of the ball from the plurality of video frame data to obtain 2D estimation coordinate of the ball at first frame time and utilize 2D to 3D matrix to convert the 2D estimation coordinate into first 3D estimation coordinate; utilize model to calculate second 3D estimation coordinate of the ball at the first frame time; and calibrate according to the first 3D estimation coordinate and the second 3D estimation coordinate to generate 3D calibration coordinate of the ball at the first frame time.

Abstract: In a method of coating a photo resist over a wafer, dispensing the photo resist from a nozzle over the wafer is started while rotating the wafer, and dispensing the photo resist is stopped while rotating the wafer. After starting and before stopping the dispensing the photo resist, a wafer rotation speed is changed at least 4 times. During dispensing, an arm holding the nozzle may move horizontally. A tip end of the nozzle may be located at a height of 2.5 mm to 3.5 mm from the wafer.

Abstract: A memory array circuit includes a semiconductor substrate, a bit line, a complementary bit line, and a bit line sense amplifier circuit. The semiconductor substrate has an original surface. The bit line sense amplifier circuit is connected to the bit line and the complementary bit line, and the bit line sense amplifier circuit includes a first plurality of transistors and a first set of connection lines. Each transistor includes a gate node, a first conductive node, and a second conductive node. The first set of connection lines connects the first plurality of transistors to the bit line and the complementary bit line; wherein the first set of connection lines is above the original surface of the semiconductor substrate, and the bit line and the complementary bit line are under the original surface of the semiconductor substrate.

Abstract: A digital-to-analog converter and an operation method thereof are provided. The digital-to-analog converter includes a current source module, a decoder, a change indicator, and a random number generator. The decoder is coupled to the current source module and receives a digital input signal. The change indicator is coupled to the decoder and provides an indication signal to the decoder. The random number generator is coupled to the change indicator and provides a random number signal to the change indicator. The change indicator generates an indication signal according to the random number signal, and the decoder generates a control signal to the current source module according to the digital input signal and the indication signal, so that the current source module generates an analog output signal corresponding to the digital input signal according to the control signal.

Abstract: A driving record authentication method is provided. The method includes acquiring historical driving records of a driver and associated records of the driver. Once a non-fungible token image of the driver is minted based on the historical driving records and the associated records, the non-fungible token image is transmitted to a user terminal in response to a query request associated with the driver that sent the user terminal.

Abstract: An intelligent rescue method applied to a vehicle-mounted device and an airborne rescue device to enable semi-automatic warning and rescue of a broken-down, crashed, drowned, or stranded vehicle, enables communication between the vehicle-mounted device and the rescue device. The vehicle-mounted device determines by sensors a type of emergency of a vehicle, and performs a first assistance action and sends the rescue device a distress signal corresponding to the type of the emergency of the vehicle. The rescue device receives the distress signal and takes off from an initial position of the vehicle to a target position in response to the distress signal. Once the rescue device reaches the target position, the rescue device performs a second action for assistance.

Abstract: An inversion maintenance device has a case, an inverting mechanism, and a control system. The case forms an inversion space. The inverting mechanism has an inverting base and multiple adapting modules. The inverting base is pivotally mounted in the inversion space. The adapting modules are mounted on the inverting base. Each of the adapting modules has an adapting port. The inverting base is capable of inverting to make the adapting port face downward and cover the inversion space. Dental handpieces can be mounted on the adapting modules. The control system has a control module and an operation input terminal. The operation input terminal is electrically connected to the control module and is capable of controlling the control module to inject a working fluid with pressure into the dental handpiece via the adapting module.

Abstract: A method of identifying vehicles for parking management purposes marks out a parking fee paid or unpaid status when a target vehicle exits a parking area, the vehicle information comprising first and second license plate numbers. The first license plate number being entered by a vehicle-user, and the second license plate number being the license plate number as recognized from a first image taken by the parking system when the target vehicle enters the parking area. A third license plate number is taken from an image of the target vehicle when driving out of the parking area. The third license plate number is compared with first or second license plate number, and if the comparison is met, outputting a release instruction to a gate to release the target vehicle. The disclosure also provides an electronic device.

Abstract: A device verification system includes an operation panel, a computer coupled to the operation panel, and a server coupled to the computer. The operation panel includes an image acquisition unit. The computer receives an image of an operator acquired by the image acquisition unit and acquires a facial image of the operator from the image. The server receives the facial image from the computer. The server stores a facial image of an authorized operator and is configured to compare the received facial image to the stored facial image to determine whether the operator is verified.

Abstract: A method to prevent a double spend attack in cryptocurrency transactions recorded in a blockchain can be applied in a device. The device acquires transaction information, the information comprising a type of virtual currency and a transaction amount, and acquires currency price according to the virtual currency type. The device further calculates a transaction value according to the currency price and the transaction amount of the virtual currency, calculates a unit attack cost corresponding to a blockchain network of the virtual currency, adjusts a quantity of the records indicating that a transaction is recorded by the blockchain network to make a total attack cost greater than a transaction value of the transaction, and transmits transaction information of the transaction to the blockchain network.

Abstract: A credit card transaction device fortified against fraudulent use includes a display screen and a processor. A method disclosed for the device and for a server in communication with the device includes obtaining basic information of a credit card and an image of a user; analyzing whether the image includes a face; extracting facial features from the image when the image includes the face; determining whether the facial features and the basic information are consistent with a basic information and facial features of a legitimate user which are stored. When the facial features and the basic information are consistent with the stored data, a password verification interface is provided and an entered password is verified with the stored password for consistency. The credit card transaction is performed when the entered password matches the stored password.

Abstract: A network connection retrieving method and a network system are provided. The method is adapted for retrieving connections between network devices by a master device among network devices in a local area network, and includes: attempting to establish the connection with a current device according to a pre-recorded network address of the current device; sending a plurality of broadcast packets to each of the network devices in the local area network if the step of establishing the connection failed, and collecting a response message returned from each of the network devices in response to the broadcast packets; and identifying the response message returned from the current device by comparing unique identification information recorded in each of the response messages with pre-recorded unique identification information of each of the network devices, and using the network address recorded in the response message to re-establish the connection with the current device.

Abstract: A device verification system includes an operation panel, a computer coupled to the operation panel, and a server coupled to the computer. The operation panel includes an image acquisition unit. The computer receives an image of an operator acquired by the image acquisition unit and acquires a facial image of the operator from the image. The server receives the facial image from the computer. The server stores a facial image of an authorized operator and is configured to compare the received facial image to the stored facial image to determine whether the operator is verified.

Abstract: A camera calibration system includes a server, a camera communicatively coupled to the server, a drone communicatively coupled to the server, and an identification pattern coupled to the drone. The server controls the drone to fly in front of the camera at a calibration distance according to position and orientation information of the camera and position information and a distance setting rule of the drone, controls the camera to acquire at least one image of the identification pattern at each of the plurality of positions, and obtains parameters of the camera by performing calibration on the camera according to the acquired plurality of images. The drone flies in a number of positions at the calibration distance and flies in at least one plane.

Abstract: A network connection retrieving method and a network system are provided. The method is adapted for retrieving connections between network devices by a master device among network devices in a local area network, and includes: attempting to establish the connection with a current device according to a pre-recorded network address of the current device; sending a plurality of broadcast packets to each of the network devices in the local area network if the step of establishing the connection failed, and collecting a response message returned from each of the network devices in response to the broadcast packets; and identifying the response message returned from the current device by comparing unique identification information recorded in each of the response messages with pre-recorded unique identification information of each of the network devices, and using the network address recorded in the response message to re-establish the connection with the current device.

Abstract: An earphone capable of reducing pressure in the ear canal and providing enhanced sound quality is provided along with a method for making the same. The earphone includes an earphone body penetrated by an air channel and having a receiving space receiving a vibrating membrane. A loudspeaker is provided in the receiving space and corresponds to the vibrating membrane. When the earphone is worn in the ear, the ear canal is in communication with the outside through the air channel so that acoustic waves generated by the vibrating membrane and reflected by the eardrum can propagate out of, rather than back and forth within, the ear canal. Thus, the eardrum is safe from an abnormal pressure otherwise attributable to repeatedly reflected acoustic waves, and the vibrating membrane is protected from a compressive force that may otherwise result from reflected acoustic waves and cause sound distortion.

Abstract: An earphone capable of reducing pressure in the ear canal and providing enhanced sound quality is provided along with a method for making the same. The earphone includes an earphone body penetrated by an air channel and having a receiving space receiving a vibrating membrane. A loudspeaker is provided in the receiving space and corresponds to the vibrating membrane. When the earphone is worn in the ear, the ear canal is in communication with the outside through the air channel so that acoustic waves generated by the vibrating membrane and reflected by the eardrum can propagate out of, rather than back and forth within, the ear canal. Thus, the eardrum is safe from an abnormal pressure otherwise attributable to repeatedly reflected acoustic waves, and the vibrating membrane is protected from a compressive force that may otherwise result from reflected acoustic waves and cause sound distortion.

Abstract: A method of image processing, the method comprising receiving an image frame including a plurality of pixels, each of the plurality of pixels including an image information, conducting a first extraction based on the image information to identify foreground pixels related to a foreground object in the image frame and background pixels related to a background of the image frame, scanning the image frame in regions, identifying whether each of the regions includes a sufficient number of foreground pixels, identifying whether each of regions including a sufficient number of foreground pixels includes a foreground object, clustering regions including a foreground object into at least one group, each of the at least one group corresponding to a different foreground object in the image frame, and conducting a second extraction for each of at least one group to identify whether a foreground pixel in the each of the at least one group is to be converted to a background pixel.