Abstract: A miniature wide-angle imaging lens has a miniaturization ratio, of a total track length from the center of a first surface to a focal plane by an image circle diameter, with a value less than 3.0. The imaging lens includes, starting from an object side of the lens, a first group of at least three optical elements, a second group including an aperture stop and an optical element immediately in front of or behind the aperture stop, and a third group of at least two optical elements.

Abstract: According to one embodiment of the invention, a detective method, applied in a detective system comprising a activity-or-behavior model constructor, for activity-or-behavior model construction and automatic detection of activities of a subject system, comprising steps of: using an unsupervised machine learning technique to preprocess and analyze raw sensor data obtained from the monitored subject system to generate post data; with the post data as input, using a Natural Language Processing technique (NLP) to discover the activities or behaviors performed by the subject system; and with output data from the NLP technique as input, using a surprised machine learning technique to build an activity-or-behavior model for predicting the future behaviors of the subject system and automatically detecting abnormal activities or behaviors of the subject system; wherein the activity-or-behavior model is capable to handle multidimensional sensor data input from a plurality of sensor data streams and incorporate the senso

Abstract: An image distortion transformation method for transforming an original image by an imager having an original distortion profile to a transformed image optimized for a distortion processing unit includes inputting the original image from the imager into the transformation unit, inputting an original image distortion profile into the original distortion profile memory of the transformation unit, and inputting a target distortion profile into the target distortion profile memory of the transformation unit. The target distortion profile is different from the original distortion profile. The method further includes transforming the original image into a transformed image by transforming the distortion profile of the original image from the original image distortion profile to the target image distortion profile, and outputting the transformed image from the transformation unit.

Abstract: An image distortion transformation method for transforming an original image by an imager having an original distortion profile to a transformed image optimized for a distortion processing unit includes inputting the original image from the imager into the transformation unit, inputting an original image distortion profile into the original distortion profile memory of the transformation unit, and inputting a target distortion profile into the target distortion profile memory of the transformation unit. The target distortion profile is different from the original distortion profile. The method further includes transforming the original image into a transformed image by transforming the distortion profile of the original image from the original image distortion profile to the target image distortion profile, and outputting the transformed image from the transformation unit.

Abstract: Provided are a composite material and a preparation method therefor. The composite material comprises: a base layer; a first plant fibre fabric located on the upper surface of the base layer; optionally, a second plant fibre fabric located on the lower surface of the base layer; and resins present in each layer. The composite material has a decorative performance and an improved mechanical performance.

Abstract: Exemplary embodiments of a floating pool dispenser are described. In one embodiment, a floating pool dispenser includes an outer assembly, an inner assembly, an end cover, and a lid. The inner assembly contains chemicals to be dissolved in a pool. The inner assembly moves vertically relative to the outer assembly in response to the continuous dissolving of chemicals.

Abstract: The disclosed computer-implemented method for improving rehydration performance in data deduplication systems may include (1) identifying a set of data containers that include data segments referenced by a backup image stored in a data deduplication system, (2) determining the total number of data segments referenced by the backup image that are included in a data container within the set of data containers, (3) determining that the total number of data segments that are referenced by the backup image and included in the data container is below a certain threshold, and then (4) rebasing the data segments that are referenced by the backup image and included in the data container to at least one other data container to decrease the total number of data containers that include the data segments referenced by the backup image. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: A fan motor power-off automatic braking circuit includes an energy storage unit, a motor drive circuit, a control unit and a resistance unit connected with an input power. The energy storage unit is electrically connected with the motor drive circuit for receiving and storing an operation voltage. The motor drive circuit has multiple upper arm switch components, multiple lower arm switch components, a first drive unit and a second drive unit. The control unit is respectively electrically connected with the lower arm switch components and the first and second drive units. When the fan is powered off, the energy storage unit provides the operation voltage to the upper arm switch components to switch on the same, whereby the upper arm switch components and the motor winding form a closed loop to achieve braking effect.

Abstract: A multi-fan speed single-wire output system and a method thereof are disclosed. The system includes at least one first fan and one second fan, which have a first and a second rotation speed, respectively. The first fan transmits the first rotation speed to the second fan, and the second fan performs a logical operation on the first and the second rotation speed to generate an output rotation speed.

Abstract: A multi-fan speed single-wire output system and a method thereof are disclosed. The system includes at least one first fan and one second fan, which have a first and a second rotation speed, respectively. The first fan transmits the first rotation speed to the second fan, and the second fan performs a logical operation on the first and the second rotation speed to generate an output rotation speed.

Abstract: Exemplary embodiments of a floating pool dispenser are described. In one embodiment, a floating pool dispenser includes an outer assembly, an inner assembly, an end cover, and a lid. The inner assembly contains chemicals to be dissolved in a pool. The inner assembly moves vertically relative to the outer assembly in response to the continuous dissolving of chemicals.

Abstract: A disclosed computer-implemented method for retrieving data may include (1) receiving a request to retrieve data segments from a storage system that stores data segments in a plurality of data containers, (2) obtaining, for each data segment, information that indicates which data container stores the data segment, (3) determining, based on the information that indicates which data container stores each data segment, that using an initial access order to retrieve the data segments would result in visiting one or more data containers more than one time, (4) rearranging access to one or more data segments such that retrieving the data segments results in visiting the data containers at least one fewer times than using the initial access order, and (5) retrieving the data segments from the storage system based on the rearranged access order. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: An image distortion transformation method for transforming an original image by an imager having an original distortion profile to a transformed image optimized for a distortion processing unit includes inputting the original image from the imager into the transformation unit, inputting an original image distortion profile into the original distortion profile memory of the transformation unit, and inputting a target distortion profile into the target distortion profile memory of the transformation unit. The target distortion profile is different from the original distortion profile. The method further includes transforming the original image into a transformed image by transforming the distortion profile of the original image from the original image distortion profile to the target image distortion profile, and outputting the transformed image from the transformation unit.

Abstract: The present disclosure discloses a pool brush including a brush frame, a handle and a plurality of rows, of bristles. Each row of the plurality of rows of bristles includes a vertical row of bristles and two tilted rows of bristles arranged on the two sides of the vertical row of bristles, and the angle between the axial line of the outermost bristle in the tilted row of bristles and the axial line of each bristle in the vertical row of bristles is no less than 90 degrees.

Abstract: A miniature wide-angle imaging lens has a miniaturization ratio, of a total track length from the center of a first surface to a focal plane by an image circle diameter, with a value less than 3.0. The imaging lens includes, starting from an object side of the lens, a first group of at least three optical elements, a second group including an aperture stop and an optical element immediately in front of or behind the aperture stop, and a third group of at least two optical elements.

Abstract: A method for deduplication rehydration is described. In one embodiment, a request to restore a backup image is received. The backup image is stored in a deduplication system. The backup image includes a plurality of data segments. The method includes determining locality information for at least one of the plurality of data segments. The locality information includes information regarding a location of the at least one data segment in relation to each other data segment of the plurality of data segments in the backup image. The method includes obtaining an identifier of each data container storing the plurality of data segments of the backup image, determining a degree to which the plurality of data segments of the backup image are processed by prefetching, and prefetching one or more of the plurality of target data segments from a data container based at least in part on a predetermined effectiveness threshold.

Abstract: A signal control system for a fan motor comprises an input end, a load driving unit, a first signal conversion unit, a second signal conversion unit, and an amplifying driving unit. A rotation speed signal is transmitted from the input end to the load driving unit. The first and the second signal conversion units are electrically connected to the load driving unit and receive the rotation speed signal. The amplifying driving unit is electrically connected to the first and the second signal conversion units to generate an operation signal. Thus, the received rotation speed signal is converted to the operation signal through the signal control system for the fan motor, achieving the effects of cost reduction, simplification, and convenience.

Abstract: A signal control system for a fan motor comprises an input end, a load driving unit, a first signal conversion unit, a second signal conversion unit, and an amplifying driving unit. A rotation speed signal is transmitted from the input end to the load driving unit. The first and the second signal conversion units are electrically connected to the load driving unit and receive the rotation speed signal. The amplifying driving unit is electrically connected to the first and the second signal conversion units to generate an operation signal. Thus, the received rotation speed signal is converted to the operation signal through the signal control system for the fan motor, achieving the effects of cost reduction, simplification, and convenience.

Abstract: Systems and methods in accordance with the invention allow automatic recording, sharing, and communicating of different parameters associated with images and their imager to define a specific system behavior of a display device or an algorithm unit. Examples of information include imager parameters, environment parameters, image processing and enhancement parameters, coordinates of a section of wide-angle scene image content, display parameters, defined user experience, defined system behavior or any information to be recorded, shared, and communicated. To avoid loss of information, the information is encoded directly in the picture using a marker. This way, the information is robustly transferred from the imager to the display unit. According to the information, the final image can be automatically corrected and enhanced before display, different associated parameters can be displayed on final image or be used with another output.