Abstract: A method for identifying video signal source is provided. The method includes the following steps. A first identification code is assigned to a first transmitter device by a receiver control unit of a receiver device. A first video data is transmitted by the first transmitter device. The first video data and a first identification image corresponding to the first identification code are combined as a first combined video data by the receiver control unit. The first combined video data is outputted to a display device by the receiver control unit.

Abstract: A method for controlling the motion of a mobile warning triangle for suitable placement on a roadway acquires information as to color of the lane markings detected by a sensor. When the mobile warning triangle is first placed on the roadway, the sensor is preset in position to detect the lane marking. White or yellow color information of the lane marking or of the black-colored roadway are detected or are not detected by the sensor, and deviations from a required path are recognized when different colors are received in certain combinations by the sensor. If no deviation is recognized in the colors, the mobile warning triangle continues moving forward. If a deviation in colors is recognized, the mobile warning triangle is controlled to hunt to the left and right through one or more predetermined angles to try to detect or redetect the lane marking.

Abstract: A method for controlling the motion of a mobile warning triangle for placement behind a stationary vehicle on a roadway acquires color information of the lane markings detected by a first sensor, a second sensor, and a third sensor of the mobile warning triangle. When the mobile warning triangle is placed on the roadway, the first to third sensors are preset in position to detect the lane markings and their colors. The white or yellow color information of the lane markings or of the black-colored roadway are detected or not detected on an individual basis by the sensors and deviations from a required path are recognized when different colors are received in certain combinations by the sensors. If no deviation is recognized in the colors, the mobile warning triangle is controlled to continue moving forward.

Abstract: A data transmission method stores target data from an initial storage area of an initial platform to an initial temporary storage area of the initial platform in response to a first user operation. The target data is uploaded to a cloud platform. The cloud platform stores the target data. A target platform downloads the target data from the cloud platform to a second designated location of the target platform in response to a second user operation. The initial platform stores the target data from the initial temporary storage area to a third designated location of the initial platform in response to a third user operation. The method improves the efficiency of data transmission between different platforms.

Abstract: A parking management method includes detecting whether there is a vehicle approaching a parking management device in a parking space, capturing images of the vehicle when the vehicle is detected approaching the parking management device, identifying feature information of the vehicle in the captured images, determining whether the vehicle matches the parking space according to the feature information, controlling a lifting mechanism to change from a raised state to a lowered state when the vehicle matches the parking space, and establishing a pairing connection between the parking management device and a mobile terminal.

Abstract: A warning triangle structure includes a base, a triangle, a number of connecting rods, and a braking device. The triangle includes a bottom end and a top end opposite the bottom end. The bottom end is fixedly mounted to the base. Each of the connecting rods includes a first end and a second end. The first end is fixedly coupled to the base, and the second end is mounted with a rotatable support wheel. The braking device is installed at the second end of at least one of the connecting rods. The braking device includes a transmission shaft coupled to the support wheel. The braking device controls the support wheel to stop rotating by stopping the transmission shaft from rotating.

Abstract: A method for controlling a mobile warning triangle to move along a lane marking controls the mobile warning triangle to move forward and acquire color information of the lane marking detected by a first sensor and a second sensor of the mobile warning triangle when the mobile warning triangle is placed to allow the first sensor to detect the lane marking of the lane. The color information detected by the first sensor is recognized or not recognized as a color of the lane marking, if yes, controlling the mobile warning triangle to continue moving forward. If not recognized, determining whether the color information detected by the second sensor is the color of the lane marking and if yes, correcting a moving direction of the mobile warning triangle to a first direction by a first predetermined angle or repetitions of the predetermined angle to continue moving forward.

Abstract: A parking management method includes detecting whether there is a vehicle approaching a parking management device in a parking space, capturing images of the vehicle when the vehicle is detected approaching the parking management device, identifying feature information of the vehicle in the captured images, determining whether the vehicle matches the parking space according to the feature information, controlling a lifting mechanism to change from a raised state to a lowered state when the vehicle matches the parking space, and establishing a pairing connection between the parking management device and a mobile terminal.

Abstract: A method for controlling the motion of a mobile warning triangle for placement behind a stationary vehicle on a roadway acquires color information of the lane markings detected by a first sensor, a second sensor, and a third sensor of the mobile warning triangle. When the mobile warning triangle is placed on the roadway, the first to third sensors are preset in position to detect the lane markings and their colors. The white or yellow color information of the lane markings or of the black-colored roadway are detected or not detected on an individual basis by the sensors and deviations from a required path are recognized when different colors are received in certain combinations by the sensors. If no deviation is recognized in the colors, the mobile warning triangle is controlled to continue moving forward.

Abstract: A method for controlling the motion of a mobile warning triangle for suitable placement on a roadway acquires information as to color of the lane markings detected by a sensor. When the mobile warning triangle is first placed on the roadway, the sensor is preset in position to detect the lane marking. White or yellow color information of the lane marking or of the black-colored roadway are detected or are not detected by the sensor, and deviations from a required path are recognized when different colors are received in certain combinations by the sensor. If no deviation is recognized in the colors, the mobile warning triangle continues moving forward. If a deviation in colors is recognized, the mobile warning triangle is controlled to hunt to the left and right through one or more predetermined angles to try to detect or redetect the lane marking.

Abstract: A portable and simple input device for document display purposes which can operate with the powers and functions of a full computer includes a cover, keys for user input, a circuit board, a storage unit, a first communication unit, and a processor. The keys are outside the cover, the circuit board, the processor, and the storage unit are within the cover. The storage unit stores a computer operating system and a preset document. The first communication unit enables communication between the input device and an external display device. The processor can generate a starting signal when a first preset condition is met, execute the computer operating system and the preset document in the computer operating system according to the starting signal, transmit the executed preset document to the external display device for display, and control the display characteristics of the preset document.

Abstract: A warning triangle structure includes a base, a triangle, a number of connecting rods, and a braking device. The triangle includes a bottom end and a top end opposite the bottom end. The bottom end is fixedly mounted to the base. Each of the connecting rods includes a first end and a second end. The first end is fixedly coupled to the base, and the second end is mounted with a rotatable support wheel. The braking device is installed at the second end of at least one of the connecting rods. The braking device includes a transmission shaft coupled to the support wheel. The braking device controls the support wheel to stop rotating by stopping the transmission shaft from rotating.

Abstract: A method for controlling a mobile warning triangle to move along a lane marking controls the mobile warning triangle to move forward and acquire color information of the lane marking detected by a first sensor and a second sensor of the mobile warning triangle when the mobile warning triangle is placed to allow the first sensor to detect the lane marking of the lane. The color information detected by the first sensor is recognized or not recognized as a color of the lane marking, if yes, controlling the mobile warning triangle to continue moving forward. If not recognized, determining whether the color information detected by the second sensor is the color of the lane marking and if yes, correcting a moving direction of the mobile warning triangle to a first direction by a first predetermined angle or repetitions of the predetermined angle to continue moving forward.

Abstract: A warning triangle structure includes a base, a triangular frame, a pulling assembly, and a fluorescent cloth. The triangular frame includes a bottom end and a top end opposite the bottom end. The bottom end is fixedly coupled to the base. The pulling assembly is located adjacent to the top end. The pulling assembly includes a spring and a drawstring that is resiliently coupled to the spring and that is stretchable relative to the spring. The fluorescent cloth includes a fixed end fixed to the triangular frame and a movable end coupled to the drawstring. The movable end is configured to be closed or opened relative to the triangular frame.

Abstract: A charging device includes a case, a first connector, a first communication device, a processing device, and a driving device. The first communication device is configured to communicate with a second communication device of an electrical device and send a control signal to the processing device after communicating with the second communication device. The processing device is configured to output a driving signal to the driving device after receiving the control signal. The driving device is configured to provide a pushing force to push the first connector to extend from the case to couple to a second connector of the electrical device after receiving the driving signal. The first connector is further configured to charge the electrical device after couple to the second connector. A charging system is also provided.

Abstract: A self-propelled warning device used for road safety includes a bracket, a warning sign mounted to an upper side of the bracket, and at least one driving mechanism. The driving mechanism includes a supporting leg, a driving unit, and a wheel. The supporting leg includes a receiving portion, the receiving portion defines an accommodating space. The driving unit is accommodated in the accommodating space. The wheel is mounted on the receiving portion and is drivingly connected to the driving unit. The wheel is driven by friction of the driving unit. The driving mechanism is also disclosed.

Abstract: A warning device used for road safety includes a warning sign and a driving mechanism. The driving mechanism includes a base, a driving unit, at least one wheel, a plurality of supporting units, and a plurality of driving members. The driving unit is accommodated in the base. The at least one wheel is connected to and driven by the driving unit. The plurality of supporting units are movably connected to the base. The plurality of driving members can manipulate the supporting units. Each of the supporting units is movable between a receiving or retracted position and a supporting or extended position. For stability in placement, the device can be lifted a small distance above the road by the supporting units when these are deployed. The driving mechanism is also disclosed.

Abstract: A warning apparatus includes a processor and a memory. The processor is configured to detect whether there is an object in front of the warning apparatus, calculate, when there is an object detected in front of the warning apparatus, a distance between the object and the warning apparatus, determine whether the calculated distance is less than a safe distance, and control the warning apparatus, when the calculated distance is less than the safe distance, to output a first control signal to control warning equipment to output a first warning.

Abstract: A warning device used for road safety includes a warning sign and a driving mechanism. The driving mechanism includes a base, a driving unit, at least one wheel, a plurality of supporting units, and a plurality of driving members. The driving unit is accommodated in the base. The at least one wheel is connected to and driven by the driving unit. The plurality of supporting units are movably connected to the base. The plurality of driving members can manipulate the supporting units. Each of the supporting units is movable between a receiving or retracted position and a supporting or extended position. For stability in placement, the device can be lifted a small distance above the road by the supporting units when these are deployed. The driving mechanism is also disclosed.

Abstract: A traffic warning device includes a reflective warning plate and a foldable driving mechanism. The foldable driving mechanism includes a supporting bracket; a warning sign mounted to an upper side of the supporting bracket, and a plurality of walking or motion units mounted to a lower side of the supporting bracket. Each walking unit includes a supporting leg, a wheel rotatably connected to an end of the supporting leg, and a fastening unit. The other end of the supporting leg is rotatably connected to the supporting bracket. The supporting leg is rotatable between a folded position and a deployed position. The foldable driving mechanism is also disclosed.