Abstract: Provided in embodiments of the present disclosure are a data processing method and device, the method comprising: receiving a first request message from a target node, the first information containing at least one from among the following: information related to creating a data collection task, information related to updating a data collection task, and information related to cancelling a data collection task; and sending to the target node a first response message used to respond to the first request message.

Abstract: The present application discloses a display apparatus including a solution-on-chip (SOC) comprising a first input port receiving video data, a second input port configured to receive image data in a first resolution, and a central-processing unit comprising a frame-cut block integrated with an image processor to divide a frame of image data in the first resolution to 4 parts of the frame in a second resolution in a serial order. The display apparatus further includes a FPGA configured to write, read, and process respective one of the 4 parts of the frame in the serial order sent from the SOC to reconstruct a frame of image data in the first resolution. Furthermore, the display apparatus includes a TCON configured to receive the frame of the image data in the first resolution reconstructed by the FPGA and a display panel driven by the TCON to display the frame of image data.

Abstract: There is provided a data processor for a display device including a display panel having a first resolution. The data processor includes a first mode selector and a player. The first mode selector includes a distance detector, a comparator, and a transmission resolution adjustor. The distance detector may detect a current distance between a viewer and a display surface of the display panel. The comparator determines an amount of change of the current distance from a previous distance. The transmission resolution adjustor determines a second resolution according to a threshold range within which the previous distance falls and the amount of change. The player processes received external image data as intermediate data having the second resolution.

Abstract: Provided is a method for displaying an image including: acquiring a to-be-displayed image; correcting the to-be-displayed image based on a target look-up table, wherein in the target look-up table, at least one of the original pixel values and a corresponding corrected pixel value satisfy: an absolute value of a difference between a first chroma and a second chroma is less than or equal to a chroma difference threshold, wherein the first chroma is a chroma of a first pixel, a pixel value of the first pixel being acquired by converting the original pixel value, and the second chroma is a chroma of a second pixel displayed by the display device, a pixel value of the second pixel being acquired by converting the corrected pixel value; and displaying a corrected to-be-displayed image.

Abstract: A display controller is provided. The display controller includes n field-programmable gate arrays (FPGAs) (n is an integer greater than 1). A respective one of the n FPGAs includes a first input circuit and an output circuit and a first process circuit connected between the first input circuit and the output circuit. The first input circuit is configured to receive a respective one first sub-image corresponding to the respective one of the n FPGAs. The n first sub-images are combined to form one frame of initial image. The first process circuit is configured to enhance image-resolution of the respective one first sub-image to obtain a respective one second sub-image and the output circuit is configured to deliver the respective one second sub-image corresponding to the respective one of the n FPGAs to a timing-controller.

Abstract: A method for tracking an at least partially occluded object. The method includes recognizing a non-occluded portion of the at least partially occluded object in an input image; generating a simulated image of the at least partially occluded object based on features of the non-occluded portion extracted from the input image; determining first coordinates of the at least partially occluded object in a first coordinate system; and converting the first coordinates of the at least partially occluded object in the first coordinate system into second coordinates in a second coordinate system defined in a display apparatus.

Abstract: The present disclosure provides a spark query method and system supporting trusted computing. The method comprises receiving a SQL query statement input by a user; performing parsing, logical plan analysis, logical plan optimization and physical plan generation for the SQL query statement; re-implementing an operator in the physical plan by using SGX API, and generating an execution code; invoking an enclave trusted environment to implement trusted computing for the operator, and executing the execution code. Through the present disclosure, safety of data during the calculation is ensured while the query request is processed in parallel through the spark architecture. Moreover, the spark interface provides the user with more available service and is user-friendly.

Abstract: A display controller is provided. The display controller includes n field-programmable gate arrays (FPGAs) (n is an integer greater than 1). A respective one of the n FPGAs includes a first input circuit and an output circuit and a first process circuit connected between the first input circuit and the output circuit. The first input circuit is configured to receive a respective one first sub-image corresponding to the respective one of the n FPGAs. The n first sub-images are combined to form one frame of initial image. The first process circuit is configured to enhance image-resolution of the respective one first sub-image to obtain a respective one second sub-image and the output circuit is configured to deliver the respective one second sub-image corresponding to the respective one of the n FPGAs to a timing-controller.

Abstract: A backlight driving circuit includes a pulse width modulator, at least one time-delay sub-circuit and a driving sub-circuit. The pulse width modulator is configured to transmit a control signal including a plurality of pulses. The at least one time-delay sub-circuit is configured to delay at least one pulse of the control signal from the pulse width modulator that is transmitted to the at least one time-delay sub-circuit by a set time. The driving sub-circuit is coupled to the at least one time-delay sub-circuit, and the driving sub-circuit is configured to drive at least one of a plurality of light-emitting devices in a backlight module to be turned on or off according to a control signal from the at least one time-delay sub-circuit obtained after the at least one pulse is delayed.

Abstract: The present disclosure relates to a video transmission method, apparatus and computer-readable storage medium in the field of video play. The method includes: acquiring a first video frame and a second video frame of a video to be transmitted; acquiring difference information of the second video frame relative to the first video frame; and sending the difference information to a video receiving apparatus, the difference information being used for instructing the video receiving apparatus to generate the second video frame based on the difference information and the first video frame after receiving the first video frame. The needed bandwidth is small in the video transmission method of the present disclosure, the video transmission may not be restricted by the distance, and thus video transmission has a high flexibility.

Abstract: The present application discloses a display apparatus including a solution-on-chip (SOC) comprising a first input port receiving video data, a second input port configured to receive image data in a first resolution, and a central-processing unit comprising a frame-cut block integrated with an image processor to divide a frame of image data in the first resolution to 4 parts of the frame in a second resolution in a serial order. The display apparatus further includes a FPGA configured to write, read, and process respective one of the 4 parts of the frame in the serial order sent from the SOC to reconstruct a frame of image data in the first resolution. Furthermore, the display apparatus includes a TCON configured to receive the frame of the image data in the first resolution reconstructed by the FPGA and a display panel driven by the TCON to display the frame of image data.

Abstract: Disclosed in this application are a large-sized high-Nb superalloy ingot and a smelting process thereof. The smelting process includes: vacuum induction melting to prepare a plurality of vacuum induction melting ingots with the same composition which are used for preparing electroslag electrodes with the same number as the vacuum induction melting ingots for use in electroslag remelting, preparing a consumable electrode from the prepared consumable electroslag electrodes, and performing vacuum consumable arc remelting for a plurality of times by using the consumable electroslag electrodes as raw material. A large-sized high-Nb superalloy ingot having a weight of 15 tons or above and a diameter of 800 mm or above can be prepared from such process.

Abstract: The present disclosure provides a data transmission method, includes: multiplying a frequency of a basic clock, so as to obtain a frequency-multiplied clock, in which a maximum number of high levels in the frequency-multiplied clock is greater than a maximum numerical value that the bit number can represent; removing an invalid bit width from the data to be transmitted, and determining a bit number of an effective bit width thereof and a numerical value represented by the effective bit width; determining a data period, according to the bit number of the effective bit width in the data to be transmitted; determining an actual number of high levels, according to a numerical value represented by the effective bit width in the data to be transmitted; and transmitting the data to be transmitted based on the frequency-multiplied clock, according to the data period and the actual number of the high levels.

Abstract: A backlight driving circuit includes a pulse width modulator, at least one time-delay sub-circuit and a driving sub-circuit. The pulse width modulator is configured to transmit a control signal including a plurality of pulses. The at least one time-delay sub-circuit is configured to delay at least one pulse of the control signal from the pulse width modulator that is transmitted to the at least one time-delay sub-circuit by a set time. The driving sub-circuit is coupled to the at least one time-delay sub-circuit, and the driving sub-circuit is configured to drive at least one of a plurality of light-emitting devices in a backlight module to be turned on or off according to a control signal from the at least one time-delay sub-circuit obtained after the at least one pulse is delayed.

Abstract: The present disclosure provides an object detection method and an object detection device. The object detection device includes: a heterogeneous processor and a memory, the heterogeneous processor including: a processing unit and a programmable logic unit, wherein the programmable logic unit is configured to receive a to-be-detected image, perform feature extraction on the to-be-detected image, and write an extracted feature into the memory; the processing unit is configured to read the feature from the memory, perform target object detection according to the feature, and output a detection result to the programmable logic unit; and the programmable logic unit is further configured to receive the detection result, generate prompt information according to the detection result, and output the prompt information.

Abstract: The present disclosure provides a traffic sign detection method, apparatus, system and medium. The method includes: determining geographic location information of a to-be-detected traffic sign; sending a request message for requesting for obtaining sign formation of the traffic sign, where the request message includes the geographic location information; and receiving the sign formation of the traffic sign corresponding to the geographic location information.

Abstract: The present disclosure provides a data transmission method, includes: multiplying a frequency of a basic clock, so as to obtain a frequency-multiplied clock, in which a maximum number of high levels in the frequency-multiplied clock is greater than a maximum numerical value that the bit number can represent; removing an invalid bit width from the data to be transmitted, and determining a bit number of an effective bit width thereof and a numerical value represented by the effective bit width; determining a data period, according to the bit number of the effective bit width in the data to be transmitted; determining an actual number of high levels, according to a numerical value represented by the effective bit width in the data to be transmitted; and transmitting the data to be transmitted based on the frequency-multiplied clock, according to the data period and the actual number of the high levels.

Abstract: The present disclosure provides a method and an apparatus for stretching an image. The method for stretching an image includes: selecting a corresponding stretching mode according to a mode selection parameter; generating a corresponding stretching filter group according to a stretching parameter and the selected stretching mode, and segmenting input image data into blocks; and processing the input image data segmented into blocks by the stretching filter group, to obtain stretched image data.

Abstract: The present application provides a playing method and a playing system. The playing method includes: playing display contents by a first display device; upon receipt of a storage instruction, recording playing position information and sending matching information to a second display device by the first display device; searching, by the second display device, for the first display device that sends the matching information upon receipt of a resuming instruction; pairing the first display device with the second display device; transmitting, by the first display device, the playing position information to the second display device; and resuming, by the second display device, playing the display contents according to the playing position information.

Abstract: The present disclosure provides a spark query method and system supporting trusted computing. The method comprises receiving a SQL query statement input by a user; performing parsing, logical plan analysis, logical plan optimization and physical plan generation for the SQL query statement; re-implementing an operator in the physical plan by using SGX API, and generating an execution code; invoking an enclave trusted environment to implement trusted computing for the operator, and executing the execution code. Through the present disclosure, safety of data during the calculation is ensured while the query request is processed in parallel through the spark architecture. Moreover, the spark interface provides the user with more available service and is user-friendly.