Abstract: A linear compressor or method of operation may provide for driving a motor of the linear compressor to a reference current and detecting a sampled current during driving the motor. The linear compressor or method may also provide for calculating a variance in current using the sampled current, determining the calculated variance exceeds a variance threshold, and restricting the reference current based on determining the calculated variance exceeds the variance threshold.

Abstract: A method for operating a variable capacity drive circuit of a compressor includes operating first and second four-quadrant switches in a first state in which the first four-quadrant switch is closed and the second four-quadrant switch is open such that a voltage seen by the motor is equal to an AC line voltage. The method also includes operating the first and second four-quadrant switches in a second state where the first four-quadrant switch is open and the second four-quadrant switch is closed such that the voltage seen by the motor is to zero. Further, the method includes providing a positive firing angle and a negative firing angle for defining when the first and second four-quadrant switches are operated in each of the first and second states. Moreover, the method also includes transitioning between the first and second states using the firing angles at a switching frequency determined by the AC line voltage frequency.

Abstract: A method of operating a motor driving a rotating member includes directing rotation of the rotating member at the motor at an initial speed, determining a first frequency of a first noise component generated by the rotating member at the initial speed, determining a second noise component having a second frequency phase shifted 180° with respect to the first frequency, determining a torque modifier of the motor to generate the second noise component from the motor, and directing activation of the motor according to the determined torque modifier.

Abstract: A curbside voter cart for transporting a voting terminal to a parked motorist, comprising a pair of opposing side-rails defined by contiguous tubing, a horizontal long-axle strut spanning the side-rails, a pair of wheels mounted on an axle supported in the long-axle strut, a forwardly-disposed stabilizer spanning the side-rails beneath the axle strut and projecting forward to a horizontal short-axle strut, and a pair of castors mounted on each side of the short-axle strut. In addition, a terminal support platform is adjustably mounted on the side-rails above the wheels and is repositionable anywhere along an upper extent of said side rails for adjustably positioning the voting terminal relative to a voter seated in a car.

Abstract: Descriptive information for content items (in an image or other media data) is associated as metadata using methods, devices and systems of the present disclosure. Target devices associated with content items comprise beacons for transmitting beacon data to a capture device. The capture device may comprise a camera, for example, and a communication module to communicate with a beacon. In response to the capture of an image, descriptive information is associated with image data as metadata. The descriptive information may be obtained from the target device or, using the beacon data, from another communication device. One target device may be associated with more than one content item. For example, a target device may be a mobile phone and content items may be clothing, accessories or any styling associated with a mobile phone user. The images with metadata may be shared and the descriptive information displayed to others using the metadata.

Abstract: A linear compressor and methods of operation, for example, to control extension of the linear compressor, are provided herein. A method may include supplying a time varying voltage to a motor of the linear compressor, determining an uneven fatigue condition at the linear compressor, and applying a limiting force at the motor in a negative axial direction in response to the determining step.

Abstract: A method and apparatus for resolving timing issues that arise when converting ABR media content to a transport stream by adding or deleting encoded audio/video frames in the to the segments of encoded audio/video frames at the end or beginning of advertisement (ad) transitions is disclosed.

Abstract: The present disclosure provides methods for fingerprinting of biological samples of a subject.

Abstract: Compositions and methods for making and using the compositions for maintaining clean surfaces are disclosed herein. A preferred composition for maintaining clean surfaces is an aqueous solution that comprises water, silicon dioxide, stearic acid, nitrous oxide, hydrogen and a hydrophobic substance. A preferred hydrophobic substance for this preferred composition is a water soluble powder of Polysilsesquioxane Steardimonium Chloride. A preferred method of making such a composition includes the steps of mixing the solid ingredients—silicon dioxide, stearic acid, and the hydrophobic substance, and then mixing the solid ingredients with water until the ingredients are preferably evenly distributed in the solution at preferably a PH of 0-5. A preferred method of using such a composition includes the steps of applying an even layer of the composition onto a surface and allowing the surface to dry.

Abstract: The invention describes new designs of commercial inkjet or flexographic web and sheet fed presses with pre-coating prior to printing which may upgrade the quality of the substrates and render them printable by all printing technologies including inkjet and digital. Also described are curable water-based coatings, inkjet and flexographic inks and overprint varnishes which may be radiation cured at high speed without the need for external applied heat to remove water. When used as coatings or primers, the compositions of the invention may create a surface on cellulosic substrates, polymeric films and some metal surfaces which are suitable for printing on by most printing methods including but not limited to inkjet, wet and dry toner systems, lithographic, gravure, flexographic and 4-D printing. The primer/coatings may also add up to 35% tensile strength to lightweight “thin” papers.

Abstract: The present disclosure provides a new method and apparatus for a ratchet tensioning mechanism. The apparatus uses a spring release mechanism to limit the torque applied via the tensioning device to a predetermined level. In an alternative configuration the limit of the tension could be adjusted by the user.

Abstract: A method of operating a rolling piston rotary compressor includes obtaining an angular position and an angular speed of a rolling piston of the compressor, for example, using a tachometer or shaft encoder or observer. The method further includes obtaining an electromagnetic torque applied by an electric motor that is mechanically coupled to the rolling piston. The method further includes calculating a load torque exerted on the rolling piston based on these obtained values by using a load torque observer model that is formulated using known geometries of the compressor and thermodynamic models for the gas compression process. The operation of the electric motor is then adjusted such that the electromagnetic torque applied by the motor is equivalent to the calculated load torque such that noise and vibrations are minimized.

Abstract: A reed-actuated animal call having a double-reed assembly and triple-reed assembly. The double-reed assembly has a short reed positioned atop a long reed positioned atop a sound board. An air passage is formed in the top of the sound board underneath the long reed. The long reed extends a determined length beyond the end of the short reed, the short reed constraining the long reed to enable the rapid activation of the long reed. The triple-reed assembly has an additional mid-length reed positioned between the short and long reeds. The long reed extends a determined length beyond the end of the mid-length reed, the mid-length reed extends a determined length beyond the short reed above the sound board, and the mid-length and short reeds constrain the long reed so as to enable the rapid activation of the long reed with a different resonance than the double-reed assembly.

Abstract: A linear compressor and methods of operation, for example, to detect polarity for the linear compressor are provided herein. The method may include supplying an initial time varying voltage to the motor of the linear compressor at an assumed polarity; estimating a first acceleration of the motor of the linear compressor when the motor is at a bottom dead center position; estimating a second acceleration of the motor of the linear compressor when the motor is at a top dead center position; comparing the first acceleration to the second acceleration; and determining whether the assumed polarity is correct based on the comparison.

Abstract: Systems and methods are provided for device-free motion detection and presence detection within an area of interest. A plurality of nodes, configured to be arranged around the area of interest, form a wireless network. The plurality of nodes transmit wireless signals as radio waves and receive transmitted wireless signals. The received signal strength (RSS) of the transmitted wireless signals between the plurality of nodes are measured and a value is reported. A computing device receives the reported values for the measured RSS and tracks the reported values over time. The computing device processes the reported values using an aggregate disturbance calculation to detect motion and presence within the area of interest. The computing device may notify notification device of a detected disturbance within the area of interest.

Abstract: The present disclosure provides a new method and apparatus for a ratchet tensioning mechanism. The apparatus uses a spring release mechanism to limit the torque applied via the tensioning device to a predetermined level. In an alternative configuration the limit of the tension could be adjusted by the user.

Abstract: A conference management system that is capable of managing one or more panels within a teleconference. The conference manager is capable of receiving commands for the purposes of configuring one or more panels and, during a teleconference, activating various panels at various times. In particular, the conference manager is configured to add participants in a teleconference to a panel. The conference manager is also configured to activate a panel, which has the effect of unmuting the audio and video media of the participants previously identified as members of the panel. The conference manager can be further configured to restore the conference to its previous mode, such as a lecture mode in which a lecturer participant is identified as a permanent speaker such that activating and deactivating a panel does not result in the lecturer being muted. Muting treatments other than activating a panel can also be applied to the teleconference.

Abstract: A linear compressor and methods of operation, for example, to detect polarity for the linear compressor are provided herein. The method may include supplying an initial time varying voltage to the motor of the linear compressor at an assumed polarity; estimating a first acceleration of the motor of the linear compressor when the motor is at a bottom dead center position; estimating a second acceleration of the motor of the linear compressor when the motor is at a top dead center position; comparing the first acceleration to the second acceleration; and determining whether the assumed polarity is correct based on the comparison.

Abstract: A linear compressor and methods of operation, for example, to control extension of the linear compressor, are provided herein. A method may include supplying a time varying voltage to a motor of the linear compressor, determining an uneven fatigue condition at the linear compressor, and applying a limiting force at the motor in a negative axial direction in response to the determining step.

Abstract: Aspects of the disclosure describe a wheeled vehicle having a structure attached thereto and configured to acquire within the interior of the structure a vehicle to be inspected. The structure is configured to receive the vehicle within its interior. In example implementations, the structure is located relative to the wheeled vehicle such that the vehicle to be inspected is loaded into and received within the structure during travel of the wheeled vehicle past the vehicle to be inspected. Having loaded the vehicle into the structure, the vehicle may be inspected. Once inspection is complete, the vehicle may be unloaded from the structure. In example implementations, the structure is located relative to the wheeled vehicle such that the inspected vehicle is unloaded from the structure during travel of the wheeled vehicle past the inspected vehicle. The wheeled vehicle may transport the structure to the site of another vehicle to be inspected.