Abstract: A system and method are provided for performing a loopback test in a pre-provisioned multi-channel optical network. A controller determines actual spectral availability within an optical spectrum, irrespective of reserved or pre-planned channel allocations, and overrides spectrum reservation limits to define an effective loopback-test bandwidth. The controller configures a selected network-management channel (NMC) and associated modem for the loopback test based on the determined availability, enabling loopback operation even within an occupied or partially utilized spectrum. The system dynamically adjusts modem transmission parameters and establishes spectral guard bands or deadbands as needed to preserve integrity of in-service traffic and mitigate filter roll-off effects. The approach allows flexible, non-disruptive photonic loopback testing in deployed Reconfigurable Optical Add/Drop Multiplexers (ROADMs) or other multi-channel optical environments without re-provisioning the existing channel plan.

Abstract: This disclosure describes techniques for processing data. The techniques comprise obtaining live video data; generating content view images based on the live video data; generating a spliced image corresponding to the live video data based on splicing the content view images; generating image-time mapping data corresponding to the spliced image by recording mapping relationships between the content view images and video time points, wherein the spliced image and the image-time mapping data enable to display a content view image corresponding to a historical video time point at a location close to a progress element on a page of playing the live video data; and sending, to the client device, the live video data, the spliced image corresponding to the live video data, and the image-time mapping data corresponding to the spliced image during a process of pulling the live video data by the client device.

Abstract: A Reconfigurable Optical Add/Drop Multiplexer (ROADM) includes degree components where there are one or more Media Channels (MCs) configured thereon; multiplexer and demultiplexer components; and a controller configured to, responsive to a request for a loopback test on Network Media Channel (NMC) that is part of a configured Media Channel (MC), determine whether there are neighboring channels to the NMC, configure deadbands on optical spectrum based on the determining, cause configuration of a modem for the loopback test, and cause performance of the loopback test with the modem.

Abstract: Disclosed in the present application are a signal processing method and link, and a target detection method and an electronic device. For an FMCW radar having at least two receiving channels and unequal-length lines, the unequal-length receiving of a digital baseband signal is compensated for in a digital domain according to a length difference between the receiving channels, such that the problem of the generation of a relative time delay between different receiving channels which is inevitably caused by a line length difference, is eliminated, thereby improving the signal receiving quality, and further improving the receiving performance.

Abstract: The present disclosure describes techniques of generating videos. The techniques comprise acquiring a target video frame among a plurality of frames of a target video; acquiring at least one comment file corresponding to the target video frame, wherein the at least one comment file comprises a plurality of pieces of comment data; determining a mask file corresponding to the target video frame; determining a display coordinate of each of the plurality of pieces of comment data in the target video frame; determining each of the plurality of pieces of comment data is hidden or rendered into the target video frame based on the mask file and the display coordinate of each piece of comment data; and generating a new frame corresponding to the target frame, wherein the new frame comprises at least one subset of the plurality of pieces of comment data embedded in the target frame.

Abstract: The present disclosure describes techniques of processing video. The techniques comprise obtaining a video to be transcoded, the video comprising a plurality of frames; setting a test object in each of the plurality of frames of the video to be transcoded; transcoding the video using a predetermined video transcoding mechanism and obtaining the transcoded video; extracting a test object from each of a plurality of frames of the transcoded video; and determining a transcoding result based at least in part on the test object extracted from each of the plurality of frames of the transcoded video.

Abstract: A Reconfigurable Optical Add/Drop Multiplexer (ROADM) includes degree components where there are one or more Media Channels (MCs) configured thereon; multiplexer and demultiplexer components; and a controller configured to, responsive to a request for a loopback test on Network Media Channel (NMC) that is part of a configured Media Channel (MC), determine whether there are neighboring channels to the NMC, configure deadbands on optical spectrum based on the determining, cause configuration of a modem for the loopback test, and cause performance of the loopback test with the modem.

Abstract: The embodiments of the present disclosure relate to the technical field of signal processing. Disclosed are a MIMO sensor, a method for determining a direction-of-arrival approximation degree, and a target information matching method. The method for determining the direction-of-arrival approximation degree includes: respectively obtaining receiving vectors of a first target and a second target according to a processing result of a multi-channel echo signal, calculating a correlation coefficient between the receiving vectors of the first target and the second target, and determining a direction-of-arrival approximation degree between the first target and the second target according to the correlation coefficient. By using the method for determining the direction-of-arrival approximation degree, the real-time performance of multi-channel echo signal processing can be improved.

Abstract: This disclosure describes techniques for processing data. The techniques comprise obtaining live video data; generating content view images based on the live video data; generating a spliced image corresponding to the live video data based on splicing the content view images; generating image-time mapping data corresponding to the spliced image by recording mapping relationships between the content view images and video time points, wherein the spliced image and the image-time mapping data enable to display a content view image corresponding to a historical video time point at a location close to a progress element on a page of playing the live video data; and sending, to the client device, the live video data, the spliced image corresponding to the live video data, and the image-time mapping data corresponding to the spliced image during a process of pulling the live video data by the client device.

Abstract: The embodiments of the present disclosure relate to the technical field of signal processing. Disclosed are a MIMO sensor, a method for determining a direction-of-arrival approximation degree, and a target information matching method. The method for determining the direction-of-arrival approximation degree includes: respectively obtaining receiving vectors of a first target and a second target according to a processing result of a multi-channel echo signal, calculating a correlation coefficient between the receiving vectors of the first target and the second target, and determining a direction-of-arrival approximation degree between the first target and the second target according to the correlation coefficient. By using the method for determining the direction-of-arrival approximation degree, the real-time performance of multi-channel echo signal processing can be improved.

Abstract: Embodiments of the present disclosure provide a method and apparatus for determining a noise floor estimated value, a target detection method and apparatus, and an electronic device. The determining method comprises: obtaining a two-dimensional Fourier data plane corresponding to a linear frequency modulation continuous wave, wherein the two-dimensional Fourier data plane comprises a distance dimension and a Doppler dimension, and the distance dimension comprises a plurality of distances gates; and for each distance gate, determining a noise floor estimated value according to a plurality of two-dimensional Fourier transform energy data of the distance gate along the Doppler dimension. According to the technical solution provided by the embodiments of the present disclosure, the noise floor estimated value of each distance gate is determined, and the efficiency and accuracy of the determined noise floor estimated value are improved.

Abstract: An interference signal detection method, apparatus, integrated circuit, radio device and terminal are disclosed, wherein, the method includes: transmitting a target signal based on a radar, receiving N frames of echo signals, obtaining N pieces of 2D FFT plane information according to the N frames of echo signals, wherein any piece of 2D FFT plane information includes power information corresponding to a range and a velocity, and detecting whether an echo signal is interfered according to accumulated power information corresponding to the range gate in the piece of 2D FFT plane information. In this way, the interference is characterized by the accumulated power information, which has good robustness and simple operations, and can achieve low power consumption of the radar system.

Abstract: A data processing method is provided, which can be applied to calculating a histogram of a preset data sequence. Each piece of data in the preset data sequence comprises an exponential part and a mantissa part. The method comprises: performing normalization processing on the preset data sequence to obtain a first index and a first mantissa of each data; according to the first index and the first mantissa of each data, generating a register address; and according to the register address, adjusting a numerical value in the corresponding register. The data processing method provided by the disclosure can be used in the process of statistical sorting of fixed point non-negative real number data such as ADC sampling data, floating point non-negative real number data such as two-dimensional FFT power data, and other types of data.

Abstract: The present disclosure describes techniques of editing a video. The techniques described in the present disclosure comprise converting a to-be-edited video comprising a plurality of frames into an image sequence comprising a plurality of images, wherein a resolution of each image in the image sequence is lower than a resolution of a corresponding frame in the to-be-edited video; generating a script of editing the to-be-edited video based at least in part on selecting and editing at least some of the plurality of images in the image sequence; displaying a preview of editing effects based on the script; and sending the script to a server computing device in response to determining the preview satisfies requirements, wherein the to-be-edited video is processed by the server computing device based on the script of editing the to-be edited video.

Abstract: The present disclosure describes techniques of generating videos. The techniques comprise acquiring a target video frame among a plurality of frames of a target video; acquiring at least one comment file corresponding to the target video frame, wherein the at least one comment file comprises a plurality of pieces of comment data; determining a mask file corresponding to the target video frame; determining a display coordinate of each of the plurality of pieces of comment data in the target video frame; determining each of the plurality of pieces of comment data is hidden or rendered into the target video frame based on the mask file and the display coordinate of each piece of comment data; and generating a new frame corresponding to the target frame, wherein the new frame comprises at least one subset of the plurality of pieces of comment data embedded in the target frame.

Abstract: The present disclosure describes techniques of processing video. The techniques comprise obtaining a video to be transcoded, the video comprising a plurality of frames; setting a test object in each of the plurality of frames of the video to be transcoded; transcoding the video using a predetermined video transcoding mechanism and obtaining the transcoded video; extracting a test object from each of a plurality of frames of the transcoded video; and determining a transcoding result based at least in part on the test object extracted from each of the plurality of frames of the transcoded video.

Abstract: The present disclosure describes techniques of editing a video. The techniques described in the present disclosure comprise converting a to-be-edited video comprising a plurality of frames into an image sequence comprising a plurality of images, wherein a resolution of each image in the image sequence is lower than a resolution of a corresponding frame in the to-be-edited video; generating a script of editing the to-be-edited video based at least in part on selecting and editing at least some of the plurality of images in the image sequence; displaying a preview of editing effects based on the script; and sending the script to a server computing device in response to determining the preview satisfies requirements, wherein the to-be-edited video is processed by the server computing device based on the script of editing the to-be edited video.