124results about How to "Reduce data capacity" patented technology

In a medical digital X-ray imaging apparatus having a plurality of imaging modes including computed tomography mode, a supporter supports an X-ray source and a digital X-ray sensor having a two-dimensional detection plane for detecting X-rays, while interposing an object between them. An image reconstructor acquires data from the digital X-ray sensor and reconstructs an image based on the acquired data. An operator selects one of a first imaging mode and a second imaging mode. The second imaging mode has an irradiation field different from the first imaging mode and has an area to be read in the digital X-ray sensor smaller than that in the first imaging mode.

A disk player includes a system controller. The system controller creates marked-playback-start-position specifying data every time a user presses a playback position marking key of an operation unit to mark a playback start position. If the user presses a menu screen display key of the operation unit to instruct the display of a marked-playback-start-position selection-menu screen, the system controller displays an image corresponding to each playback start position on the marked start position menu screen. If title playback is stopped or paused, the system controller creates stop position specifying data for specifying a stop position and stores the data in a RAM. The system controller displays a stop position menu screen including stop-position-related information based on the stop position specifying data. If any of the stop-position-related information is selected, the system controller restarts the playback of images and sound from the corresponding stop position based on the stop position specifying data.

There is provide a technique which can contribute to reduction of data capacity of image data read from an original document in an image reading apparatus, and can contribute to realization of a flexible image processing to meet user's requests. There are included a first image reading unit to read an image in monochrome from an original document at a first resolution, a second image reading unit to read an image in color from an original document at a second resolution lower than the first resolution, a position information acquisition unit to acquire position information indicating, in respective image data read by the first and the second image reading units from the same original document, corresponding positions of respective pixels on the original document, a color information acquisition unit to acquire color information indicating colors of the respective pixels in the respective image data, and a storage unit to associate the position information acquired by the position information acquisition unit with the color information acquired by the color information acquisition unit with respect to the pixel corresponding to the position information and to store them in a specified storage area.

A method and a device for synchronously recording and reproducing slides and live presentation speech are provided. The method comprises the following steps: first, converting the format of electronic slides into a webpage display format, and storing the electronic slides in a server; then, remotely selecting and remotely playing the electronic slides, synchronously recording live presentation speech when playing the electronic slides through operation at a client, and storing the operation information in the server; and finally, uploading the live presentation speech to the server, packaging the live presentation speech, the operation information and the electronic slides, storing the PPT package in the server, parsing the operation information data, and synchronously playing the slide content and the speech. The device comprises a server, and a first client and a second client which are in communication connection with the server. According to the invention, the slides are remotely controlled, and slide speech is synchronously recorded in the remote control process, so that the problem that the traditional video recording process is complex and costs high, the problem that it is difficult to share a large video online, and the like are well solved.

The present invention provides to a recording apparatus and method for recording data, in particular video data associated with a vehicle. Video data are only recorded, as long as a predefined trigger event is true. Upon detecting such a trigger event, the trigger event is further analyzed and the recording of the video data is immediately stopped when it is detected that the trigger event is no longer valid. In this way, the recording of the video data can be limited for reducing the amount of video data to be stored. According to further embodiments, the amount of video data to be recorded can be further minimized by adapting the video frame rate, the resolution, and compression rate or color format of the video data.

A monitoring system includes a picture capturing unit, a storage unit for storing original images composed of still images captured by said picture capturing unit, or a compressed images composed of compressed still images generated by compressing the still images, an image display unit, a designating unit for designating a region in an image displayed on the image display unit, and a control unit. The control unit controls said image display unit to display a panoramic entire image composed of the stored original images or compressed images, and updates only an image in the designated region in the entire image.

The invention provides a high-frequency CRM boost type PFC converter capable of adaptively optimizing the THD (total harmonic distortion) of input current and belongs to the AC-DC power conversion field. According to the high-frequency CRM boost type PFC converter, the THD (total harmonic distortion) of the input current is decreased based on a charge conduction time control mode; a digital table look-up mode is adopted to generate modulation wave signals, charge conduction time control is realized through a preset conduction time data table, and therefore, the problems of poor control precision and high cost of a digital real-time calculation mode of an analog control mode can be solved; all circuits except a modulation wave signal generating circuit, are realized by an analog mode, so that the defect that a digital controller is limited in MHz high-frequency signal response speed can be eliminated, and performance requirements for the digital controller can be lowered; preset limited data in the data table are transformed, so that the charge conduction time control can be adaptively adjusted with input voltage and output power with output power detection not required, and therefore, the THD (total harmonic distortion) of the input current can be adaptively optimized, and system cost can be significantly reduced.

There are provided a communication apparatus and method that enables the retransmission of an electronic mail if an error occurs in the transmission of the electronic mail due to its excessive data size, by reducing the data capacity of the electronic mail without taking time and labor, and a program for implementing the method. In a digital copying machine as the communication apparatus, when an electronic mail that notifies an error relating to an electronic mail transmitted with image data attached is received, the error notification electronic mail is analyzed. If an error that is attributable to the data capacity of the electronic mail is detected from the analysis result, the image data attached to the electronic mail for which the error notice has been received is acquired and the capacity of the image data is reduced by lowering its resolution. The electronic mail to which the image data thus reduced in capacity is attached is retransmitted.

The invention relates to a simplification method used for point cloud data of large-scene high-precision three-dimension laser measurement. The method can support fast simplification of the point cloud data of large-scene high-precision three-dimension laser scanning, and maintain key features in the point cloud data at the same time, and belongs to the field of three-dimension modeling technology. According to the method, a uniform grid method is adopted to carry out spatial uniform division on scattered point cloud, a grid index corresponding to the point cloud data is established, and spatial locations are utilized to fast find K neighborhoods of data points; point cloud feature points are extracted according to projection residual-values, surface variation values are utilized to carry out region division on the point cloud data; and region division and the surface variation values of the data points are utilized to simplify the original point cloud, and simplified point cloud data is finally obtained. According to the method of the invention, the data, of which a data amount is more than 100 million points, of high-precision scanning can be fast simplified, the execution speed is fast, key feature points in a scene can be maintained while the data capacity is effectively reduced, and carrying out latter three-dimension modeling and other works is facilitated.

The invention discloses a master-slave switching method and device for double wireless Bluetooth equipment, equipment and an audio system. The master-slave switching method comprises the following steps: acquiring a switching trigger event of master-slave role switching; generating a master-slave switching request according to the switching trigger event; sending a master-slave switching request to a wireless master device through preset sub-time slots of an established master and slave Bluetooth link at the anchor point position of the slave device end; and when the target anchor point of master-slave switching arrives, executing master-slave role switching with the current wireless master device. The existing communication link is subjected to time division multiplexing, and master-slaveswitching is carried out by utilizing an idle time interval in a standard time slot, so that the phenomena of audio playing delay and jamming of master-slave equipment can be reduced during master-slave switching; position resources of the sub time slots are effectively utilized, communication information transmission quantity is reduced, and bandwidth loss is further reduced.

The invention discloses an excavator energy consumption analyzing method based on working stage recognition. The method comprises the following steps of reading double-pump pressure data from a CAN bus of an excavator driving controller, carrying out filtering and frequency reducing, and intercepting pressure data to be recognized; extracting and normalizing feature vectors, inputting into a libSVM model matched with the sampling frequency of the driving controller to recognize the working stage of the excavator, correcting the recognition result by an intelligent verification link; carrying out energy consumption analysis of the excavator according to the instantaneous fuel consumption rate data, outputting the working state and oil consumption state of the excavator to a display unit, and uploading the result to an internet of things platform of the excavator through an external connection controller. According to the method, CAN bus data is fully utilized, the libSVM model established based on a plurality of frequency training sample signals and the system sampling is adopted to reduce the data volume of the pressure signals, and the applicability and the instantaneity of the method is improved, the remote monitoring of the excavator is realized through the internet of things platform, and a reference and a basis are provided for energy conservation and consumption reductionof the excavator.

A storage system comprises a plurality of flash packages comprising a plurality of flash chips, and a storage controller for receiving a first write request from a higher-level apparatus and sending a second write request of write data based on data conforming to this first write request to a write-destination flash package, and demonstrates a capacity virtualization function for causing a storage capacity to appear larger than an actual storage capacity for the higher-level apparatus, and for configuring a storage space using page units. The storage system generates a second VOL (logical volume) based on a first VOL, manages a plurality of VOLs comprising the first VOL and one or more second VOLs generated based on the first VOL as a VOL group, and allocates the same page to areas of the same address of the plurality of VOLs configuring the VOL group.

The present invention provides a processor comprising: a loop counter that is reset to 0 when a loop instruction for executing a process in a loop from a loop start address to a loop end address is issued; a data memory that receives, from outside, data that is used for executing a process in the loop; a calculator that uses the data transferred to said data memory to execute the process in the loop; a data counter that increments said loop counter by 1 every time a certain amount of data is transferred from outside to said data memory; and a loop controller that decrements said loop counter by 1 and causes said calculator to execute the process in the loop when the loop count value of said loop counter is not 0.

A dot position measurement method includes: a line pattern formation step of recording dots continuously by a plurality of recording elements of a recording head while performing relative movement between the recording head and a recording medium in such a manner that a measurement line pattern including a plurality of lines of rows of the dots respectively corresponding to the plurality of recording elements is formed on the recording medium; a reading step of reading the measurement line pattern formed on the recording medium with an image reading apparatus in a state where a longitudinal direction of the plurality of lines of the measurement line pattern are directed to a sub-scanning direction of the image reading apparatus and a reading resolution in the sub-scanning direction of the image reading apparatus is lower than a reading resolution in a main scanning direction of the image reading apparatus in such a manner that an electronic image data indicating a read image of the measurement line pattern is acquired; a region allocating step of allocating a plurality of averaging regions where an image signal on the read image is averaged in terms of the sub-scanning direction, to different positions in terms of the sub-scanning direction of each of line blocks, each line block including the lines arranged in the main scanning direction; an average profile image forming step of averaging the image signal in terms of the sub-scanning direction in each of the plurality of averaging regions that have been allocated to the different positions and creating average profile images for positions in terms of the main scanning direction; an edge position determination step of determining positions of both edges of each of the lines according to the average profile images; an averaging region position determination step of determining positions of the lines in the plurality of averaging regions according to the positions of the both edges determined in the edge position determination step; and a line block position determination step of determining positions of the lines in the line blocks according to the positions of the lines in the plurality of averaging regions determined according to the average profile images corresponding to the plurality averaging regions respectively.