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526results about How to "Reduce data volume" patented technology

Method and system for sharing processing of audios and videos

ActiveCN104506937AReduce data volumeReduce the consumption of bandwidth resources and storage resourcesSelective content distributionStop timeStart time
The invention discloses a method and a system for sharing processing of audios and videos. The method comprises the steps: after an appointed audio and video interception instruction is monitored, and displaying an audio and video interception interface; monitoring adjustment instructions for a start time instruction unit and a stop time instruction unit on the audio and video interception interface so as to adjust the start time and the stop time; after the interception instruction is monitored, uploading a playing address of the audios and the videos as well as the start time and the stop time to a server for storage; adding an appointed mark into the playing address of the audios and the videos, and generating a sharing address; sending the sharing address of the audios and the videos to an information sharing system for sharing processing; when the sharing address of the audios and the videos is accessed, analyzing the appointed mark in the sharing address, inquiring the start time and the stop time of the audios and the videos, opening the audios and the videos according to the playing address, skipping to the start time to play the audios and the videos, and ending playing at the stop time. According to the method and the system, the efficiency of sharing an audio and video fragment can be improved, and the resource consumption is reduced.
Owner:SAMSUNG ELECTRONICS CHINA R&D CENT +1

Device and method for achieving video image tiled display by adoption of parallel processing mode

The invention discloses a device and method for achieving video image tiled display by the adoption of a parallel processing mode. The device and method for achieving the video image tiled display by the adoption of the parallel processing mode comprises a control unit, an image segmentation unit, a video format detection unit and at least two groups of follow-up units. Each group of follow-up units comprises an image processing unit, an interface unit and a terminal display unit. Output ends of the image segmentation unit are respectively connected with input ends of the follow-up units; image processing units, interface units and terminal display units in the follow-up units are sequentially connected. According to the device and method for achieving the video image tiled display, video image signals are first segmented, images are processed, a parallel processing mode is conducted on image processing portions, processing speed is higher, videos are more smoothly displayed, and the heat dissipation effect of a system is better. A plurality of independent image processing units are adopted, and therefore the consistency of the tiled display effect can be guaranteed and the consistency of the tiled display effect is more conveniently adjusted.
Owner:SICHUAN CCO DISPLAY TECH

Image recording apparatus, image processing apparatus and image processing method and computer-readable medium

An image recording apparatus includes: a recording head having a plurality of recording elements; a conveyance device which conveys at least one of the recording head and a recording medium so as to cause relative movement between the recording head and the recording medium; a recording defect information acquisition device which acquires recording defect information indicating a recording element having a recording defect, of the plurality of recording elements; a recording defect correction device which corrects an image defect caused by the recording element having a recording defect, according to the recording defect information acquired by the recording defect information acquisition device; an image reading apparatus which reads in an image of a test chart for density measurement recorded by the recording head, the image of the test chart for density measurement having been corrected by the recording defect correction device; a recording density information acquisition device which acquires recording density information indicating recording density of the plurality of recording elements, according to the image of the test chart for density measurement read in by the image reading apparatus; a density correction information calculation device which calculates density correction information according to the recording density information acquired by the recording density information acquisition device; a density correction device which corrects density of image data according to the density correction information calculated by the density correction information calculation device; an uncorrected recording defect information acquisition device which acquires uncorrected recording defect information indicating a recording element having a new recording defect which has not been corrected by the recording defect correction device when the test chart for density measurement is output; and a recording density information amendment device which amends the density correction information according to the uncorrected recording defect information acquired by the uncorrected recording defect information acquisition device.
Owner:FUJIFILM CORP

Method for achieving synchronous playing of Bluetooth earpieces

The invention provides a method for achieving synchronous playing of Bluetooth earpieces. The method comprises the steps as follows: intelligent equipment divides an audio into a left channel audio signal and a right channel audio signal, and separately sends the same to a left Bluetooth earpiece and a right Bluetooth earpiece via an A2DP protocol, wherein the intelligent equipment sends the leftchannel signal and the right channel signal at the start time of a slot, and the duration time of each slot is fixed; and a timed synchronization error and/or a carrier synchronization error of the left Bluetooth earpiece and the right Bluetooth earpiece uses a phase-locked loop to adjust crystal oscillation frequency, so that the clock frequency of the left Bluetooth earpiece and the right Bluetooth earpiece is the same as that of the intelligent equipment, and meanwhile, the start time of a timed synchronization signal is synchronous with the start time of the slot in which the intelligent equipment sends the left channel signal and the right channel signal. According to the method provided by the invention, the clock synchronization of the left Bluetooth earpiece and the right Bluetoothearpiece is achieved, the error can be controlled within 1us, and the synchronous music playing quality of the left Bluetooth earpiece and the right Bluetooth earpiece is greatly improved.
Owner:BESTECHNIC SHANGHAI CO LTD

Screen vision recording method irrelated with hardware and operating system platform

The invention relates to a screen scene recording method which has no relationship with hardwares and operating system platforms, which belongs to an image processing category of the computer filed, is used for randomly recording screen scene data of various platforms and has two working modes of history playback and real-time playback, and the screen scene data can be played back on the operating system platforms of various hardwares. By adoption of a means of dynamic increment of key frames, complete initial bitmap data of a screen is recorded firstly and then changed bitmap data is recorded, and screen images are recorded continuously by adoption of a data superposition means. Moreover, the invention adopts a comparison algorithm of computing variable increments of the images and divides a full-screen image into rectangles, and a comparison algorithm of digital dot matrixes of basic rectangular units is used for indicating data change of image blocks. The invention comprises two processes of record and playback, and softwares are stored into four principal processing modules which are respectively scene recording module, data storage and acquisition module, a scene playback module and a scene data real-time module. The invention has the characteristics of quick recording speed, small data quantity, real-time playback, realization of remote monitoring and clear playback.
Owner:WISESOFT CO LTD +1

Phase measurement compensation method for airborne interferometric SAR (synthetic aperture radar) based on synchronous internal calibration signals

The invention discloses a phase measurement compensation method for airborne interferometric SAR (synthetic aperture radar) based on synchronous internal calibration signals, effectively improves precision in interchannel error measurement and compensation and lowers the effect of calibration signals on radar performance. A calibration signal source is used to generate a phase modulated internal calibration signal; the phase modulated internal calibration signal is divided into N signals by a shunt, the internal calibration signal is combined with radar echo signal, received by an antenna, through a combiner, the internal calibration signal and the radar echo signal in the same path are synchronously input to corresponding receiving channels by controlling start time of the internal calibration signal; a matching filter is used to extract internal calibration signals from radar data of each receiving channel so as to separate the internal calibration signals from radar echo in an image field; processes of the phases of the receiving channels changing with time is calculated according to phase changes of the internal calibration signals; interchannel phase error measurement and compensation are completed according to phase change processes of the channels, and transmission error correction is complete.
Owner:济钢防务技术有限公司

Method and device for aligning machine vision

The invention relates to a method for aligning machine vision. The method mainly includes the following steps of fixing a first camera and a second camera, determining a coordinate conversion relationship, selecting at least one first feature point and at least two second feature points, assigning a target physical location coordinate of the first feature point and target physical location coordinates of the second feature points respectively, collecting an image of a coarse alignment mark point of an object to be aligned, calculating the coordinate deflection of a current physical location coordinate of the first feature point and the target physical location coordinate of the first feature point, conducting coarse alignment on the object to be aligned, collecting an image of a fine alignment mark point of the object to be aligned, calculating the coordinate deflection between a current physical location coordinate of each second feature point with the target physical location coordinate of each second feature point according to the image of the fine alignment mark point, and conducting fine alignment on the object to be aligned. Meanwhile, the invention further provides a device for aligning machine vision, and the method and device for aligning machine vision are low in cost and good in instantaneity.
Owner:SHANGHAI UNIV

Edge calculation-based high-precision map crowdsourcing updating system

PendingCN110160544AReduce data volumeImplement distributed updatesInstruments for road network navigationVisual field lossAggregate data
The invention discloses an edge calculation-based high-precision map crowdsourcing updating system. The system comprises at least one information collecting terminal, a central node and at least one map using terminal, wherein the information collecting terminal is arranged at a vehicle end and used for constructing a partial high-precision map in a current visual field of a vehicle in real time and sending differentiated data of the partial high-definition map and a high-precision map at the position, of a current-version high-precision map, to the central node; the central node is used for summarizing the differentiated data of the maps from one or more information collecting terminals and generating incremental map update data of the current-version high-precision map according to the summarized data; and the map using terminal is used for obtaining the incremental map update data from the central node. The system has the technical effects that by adopting an edge calculation mode,the data processing is carried out in advance at a place near a position where original data are generated to reduce the amount of data transmitted from the vehicle end to the central node; moreover,incremental updating is carried out on the high-precision map and only the differentiated content of the current high-precision map is needed to be returned at the vehicle end, thereby further reducing the amount of data sent to the central node.
Owner:小米汽车科技有限公司
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