371results about How to "Reduce data storage" patented technology

This invention relates to intelligent video surveillance fuzzy logic neural networks, camera systems with local and network-shared communications for facial, physical condition and intoxication recognition. The device we reveal helps reduce underage drinking by detecting and refusing entrance or service to subjects under legal drinking age. The device we reveal can estimate attention of viewers of advertising, entertainment, displays and the like. The invention also relates to method, and Vision, Image and related-data, database-systems to reduce the volume of surveillance data through automatically recognizing and recording only occurrences of exceptions and elimination of non-events thereby achieving a reduction factor of up to 60,000. This invention permits members of the LastCall™ Network to share their databases of the facial recognition and identification of subjects recorded in the exception occurrences with participating members' databases: locally, citywide, nationally and internationally, depending upon level of sharing permission.

A method and system for identifying alternate contact information of a specific type; particularly, by providing an inputted Email address in a query, one or more alternate Email addresses can be returned to the query, using an automated database. The system is queried using an entity's known Email address, which, in turn, is associated with other contact information for the entity, such as name and postal address, and the other contact information is then used to identify alternative Email addresses for the targeted entity either at the time of the query or in preparation of the database, and the alternative Email address(es) are then outputted to the requestor from the system. The method uses knowledge of contact points of different types for the same entity to identify alternate contact points of a single type, within a database of contact information.

An efficient architecture for a virtual desktop system in a Virtual Machine Monitor (VMM) operating environment. In one embodiment, initially, a virtual desktop computer system utilizing one or more host computer systems provides one or more remote display systems with interactive graphics and video capabilities. The host computer system generally manages windows and frames that correspond to remote display systems and manages updating the remote display systems over a network connection. Preferred embodiments include a multi-display processor that is enhanced for VMM operating environments.

VMM operating environments typically consist of different Virtual Machines (VMs) and a control layer known as the Virtual Machine Monitor (VMM) that manages the different VMs. Each VM is typically designed to be unaware of the existence of other VMs and the VMM is designed to provide the necessary abstraction, isolation and coordination between the different VMs to the physical platform hardware.

A system and method for tomographic image reconstruction using truncated limited-angle projection data that allows exact interior reconstruction (interior tomography) of a region of interest (ROI) based on the linear attenuation coefficient distribution of a subregion within the ROI, thereby improving image quality while reducing radiation dosage. In addition, the method includes parallel interior tomography using multiple sources beamed at multiple angles through an ROI and that enables higher temporal resolution.

The invention discloses a block chain-based information-authenticating and source-tracing method. The method comprises the steps of (1) acquiring the copy of the original information to be issued by an original information publishing end; (2) generating the hash value of the copy and picking the content information of the copy at the same time; (3) creating the first transaction information based on the content information of the copy and the hash value of the copy; (4) writing the first transaction information into a center database and a block chain, or writing the first transaction information into the block chain; (5) acquiring the transshipment information released by a information transshipment end, and generating the hash value of the transshipment information; (6) comparing the hash value of the transshipment information with the hash value of the copy; if the two hash values are the same, returning a first voucher for representing the information to be true or non-tampered; if the two hash values are not the same, not returning the first voucher or returning a second voucher for representing the information to be not true or tampered. The invention further discloses a corresponding system. According to the invention, the information authentication and the source tracing can be reliably realized.

A full-face vehicular detection method for a railway tunnel lining and a device aim to avoid collision of ground penetrating radar antennas with an overhead line system and a support of the overhead line system, the detection speed is a normal running speed of a train, the antennas in full-face detection are not interfered with each other, automatic positioning is realized during detection, only ground penetrating radar signals in a tunnel need to be acquired, and a penetrating radar signal processing and analyzing method in tunnel detection is modified. The vehicular device comprises a six-channel high-speed scanning penetrating radar, a positioning portion, a laser ranging portion and data acquisition and processing software. The pulse repetition frequency of the ground penetrating radar is 3MHz, the pulse repetition frequency of each channel is 500kHz, and the scanning rate is 976scan/s. The ground penetrating radar is provided with TEM (transverse electric and magnetic field) short-horn air coupled antennas, each group of antennas realizes a double-transmission and single-receiving function, and the center frequency of the antennas is 300MHz. The ground penetrating radar antennas are mounted outside passenger train connectors, radiation surfaces of the antennas respectively face to an arch crown, arch springing and side walls, and the full-face vehicular detection method and the device are used for automatically detecting to exam the railway tunnel lining.

The invention discloses a method for updating and storing a data file. The method comprises the following processing steps that: (1) a to-be-stored data file is divided into a plurality of data blocks, and a check code of each data block is respectively calculated and is attached to a fixed region of the data file; (2) the check code corresponding to each data block in an updated and stored new data file is respectively compared with the check code of a corresponding data block in an original data file; (3) the data blocks with different check codes are updated and stored, and the check codes of the data file are updated and stored. The method can reduce unnecessary data storage to increase storage efficiency and reduce data storage time, and be suitable to be used in the technical fields such as the data storage and the backup of communication equipment.

The invention discloses a single-channel real-time noise reduction method based on the convolutional recurrent neural network, a single-channel real-time noise reduction device based on the convolutional recurrent neural network, an electronic device and a storage medium, and belongs to the technical field of computers. The method comprises the following steps: extracting acoustic features from received single-channel voice signals, carrying out iterative operation on the acoustic features in a pretrained convolutional recurrent neural network model, thus the specific value film of the acoustic features is calculated, carrying out masking on the acoustic features by adopting the specific value film, and synthesizing the acoustic features after masking and the phase positions of the single-channel voice signals, thus obtaining voice signals. For the single-channel real-time noise reduction method based on the convolutional recurrent neural network and the single-channel real-time noisereduction device based on the convolutional recurrent neural network, the parameter number of the neural network can be reduced, the data storage amount and the demand for the system data bandwidth can be reduced, and the real-time property of the single-channel noise reduction is greatly improved while the good noise reduction property is realized.

A method and apparatus for identifying manufactured items in containers, where each container is suitable for containing two or more units, and where the method comprises the steps of: associating each unit with a unique unit identifier, uniquely identifying each unit, allocating two or more units to be contained in each container, uniquely identifying each container, for each container, determining one or more ranges of unit identifiers of the two or more units allocated to the container, and storing, in a database, a container identifier for each container, each container identifier being coupled, in the database, to the one or more ranges of unit identifiers of the two or more units allocated to the container. There is also provided methods and apparatus for authenticating, tracking and tracing the units.

The invention discloses a self-adapting multimedia stream control method in a sensor network, which belongs to the field of communication networks of computers. The method comprises the following steps: a data link layer dynamically monitors an interface array according to the characteristics of the multimedia coded video sequence and informs an application layer in time; when the quality of a radio link gets poor, and the communication congestion occurs or probably occurs, the application layer starts an active video frame discarding policy, and a transmitting node actively discards part of low priority video frame data which are less important to the playing quality of a receiver so as to reduce a communication load and increase the successful transmitting probability of a high priorityvideo frame; and when the communication is normal, the transmitting node normally transmits the video frame. The invention can improve the playing quality of a video stream at the receiver, reduce theenergy consumption of the node and improve the performance for transmitting multimedia data in real time by the wireless sensor network.

The invention discloses an indoor positioning and path leading method based on mobile terminal inertial navigation. The indoor positioning and path leading method comprises the following steps: firstly collecting indoor path trajectory data in a subsection manner; performing optimizing processing on history path trajectory data by using a shortest path algorithm to obtain optimal path trajectory data; storing the optimal path trajectory data and uploading the stored optimal path trajectory data to a database; when a place of arrival is set by a user, obtaining corresponding most optimal path trajectory data from the database by mobile equipment, and performing path display and guidance. No extra equipment is needed, indoor inertial navigation and path guidance with relatively high precision can be achieved by just utilizing a built-in sensor of the mobile equipment, and the method has the characteristics of high practicability, high universality and low cost.

The invention relates to a data storage system and data processing method for information appliances, this system includes: one or more interconnected information appliances database server, one or more family network gateway servers, and one or more information appliances data management server; the data processing method includes the information appliances on-line and off-line and data processing method for status data updating, through this data processing method, the current status of information appliances may be reflected in the information appliances data management server in real-time through the family network gateway server. With the system and method mentioned in the invention, the data and information of information appliances may be stored separately, and realizes the unified management of information appliances data, convenient for the user to acquire the data of information appliances, reduce the requirements for data storage and processing ability of information appliances themselves, it may be also favorable for operator to manage and operate the household services, and further realize the service expansion.

A system, method, and computer program product for reducing data storage requirements in a database system are described herein. An embodiment includes identifying at least one data candidate of fixed length data type in at least one row of database data for compression based upon a predetermined threshold level and a boundary of compression, providing at least one bit within the at least one row for an identified data candidate according to the boundary of compression, and storing the at least one row as compressed data in the database system. For compression based on a row boundary, the identified data candidates for compression include fixed length columns having lengths that do not fall below the predetermined threshold level in a row of data and the at least one bit comprises a bitmap for a length of the identified data candidates following compression. For compression based on a page boundary, the identified data candidates for compression include redundant byte string data in a page of data, the redundant byte string data including matching data across columns having lengths that do not exceed the predetermined threshold level.

The invention discloses a self-adaptive method and a self-adaptive system for reporting position information at intervals, wherein the method comprises the following steps: acquiring the position information and speed information of terminal equipment by terminal equipment; recording the acquisition time; acquiring longitude and latitude values in the current position information of the terminal equipment; calculating the accumulated distance between the current position and the position reported the last time by utilizing the longitude and latitude values and the longitude and latitude values in the latest reported position information; judging whether the accumulated distance is larger than or equal to a preset distance threshold value; reporting the current position information of the terminal equipment and recording the report time point when the accumulated distance is larger than or equal to the preset distance threshold value. By adopting the method disclosed by the invention, the user traffic, the electric quantity of front-end equipment and the network bandwidth can be saved, the processing pressure of a server can be greatly alleviated and the data storage content is reduced.

An attention calling apparatus operates in the following manner. That is, eyes distribution pattern is generated from the behavior of the eyes of the vehicle driver captured by a camera in a predetermined time, and driver's condition is estimated based on the distribution pattern. Further, concentration of the driver on driving is estimated based on the comparison between the distribution pattern and the stored information of distribution pattern. When the distribution pattern indicates that the degree of concentration on driving is high, the driving operation is stored in storage in association with the concentration degree. When the operation situation fulfills a notification provision condition, driver's attention is called depending on the concentration degree.

The present invention discloses a spread spectrum through-the-wall radar imaging method based on the compression perception technology. After an index average background elimination method is employed to remove the direct wave and the wall clutter, measurement signals are obtained through a random measurement matrix, a dictionary having been set and the measurement matrix are combined to construct a compressed perception model of a multi-measurement vector (MMV), target image information after the all is reconstructed from the measurement including few measurement values through an orthogonal matching pursuit (OMP) method, and finally, the through-the-wall radar is completed according to the target after the wall. Compared with a traditional synthetic aperture radar imaging method, the spread spectrum through-the-wall radar imaging method based on the compression perception technology is able to greatly reduce the number of the observation points and the data storage amount and shorten the recording time. The problems are solved that the spread spectrum through-the-wall radar SAR imaging method in the prior art requires lots of observation antennas, large data storage space and long data recording time.

The invention provides a data compression method which comprises the following steps: obtaining an original data sequence (N1, N2, N3,..., Nm); then obtaining a differenced data sequence (D1, D2, D3,..., Dm) according to an equality that k is greater than 1 and less than or equal to m and the original data sequence (N1, N2, N3,..., Nm); and sequentially storing each differenced data in the differenced data sequence (D1, D2, D3,..., Dm). The invention also provides a data decompression method, a data compression device and a data decompression device. By adopting the data compression method, the data compression method device, the data decompression method and the data decompression device, the differenced data sequence is obtained by carrying out back-minus-front computation on the original data sequence, and each differenced data in the differenced data sequence is stored sequentially, because the value of the differenced data is less than that of the original data, the number of bytes for storing the differenced data is less than the number of bytes for storing the original data, thereby saving the data storage space.

The invention discloses an AGV (automated guide vehicle) path planning method based on an A* algorithm. The AGV path planning method comprises steps as follows: firstly, an environmental map is established with a topological method, and the abstract environment is described with a specific data structure; secondly, a heuristic function is established with the A* algorithm, a reasonable evaluationfunction is set, and a path between nodes on the map is solved; finally, according to a specific task requirement of an AGV, a reasonable price mechanism is made to guide the algorithm for obtaining of the optimal solution. With adoption of the method, the working environment of the AGV can be described accurately, storage space of the map is reduced, and efficiency and accuracy of the algorithm are improved.

The invention discloses a non-iteration complex amplitude modulation holographic projection method which includes the steps of decomposing light vector of each pixel of a complex amplitude light field into two pure phase values to obtain two pure phase holograms with equal size of an original image, sampling and synthesizing the two pure phase holograms through chequer patterns, adding inclination plane wave factors on the synthesized pure phase hologram to obtain an encoded pure phase hologram, sequentially arranging a phase spatial light modulator, a light splitting prism, a first lens, a filtering diaphragm, a second lens and a screen, transmitting the encoded pure phase hologram to the phase spatial light modulator through a computer, and observing the complex amplitude light field on an output side screen through a 4f optical path system. Through the method, reconstruction image speckles can be eliminated, influence of device zero-order wave on a reconstructed image can be prevented, and the calculating speed of a hologram is increased.

The invention discloses a data type-based numeric data compression and decompression method. The data compression method includes the following steps: (1) the determination of a forward data type transformation mode; (2) the determination of a forward data transformation formula; (3) forward data transformation; (4) the generation of a binary data file; (5) the registration of a compression mark.The data decompression method includes the following steps: according to the compression mark, determining an inverse data type transformation mode and an inverse data transformation formula, carrying out inverse data transformation, and storing the restored data into a binary file. Under the premise of meeting applicable conditions, the method can be changed to use a small-length memory unit, sothat the quantity of stored data can be correspondingly reduced to half or one quarter or even one eighth of the original quantity, the data compression rate is high, the quantity of stored data is small, the speed of task computation and the speed of transmission are increased, data are open, and the data type-based numeric data compression and decompression method is highly compatible, and is easy to implement.