Abstract: A drive mechanism for a rotary aircraft includes an outer drive member having a plurality of drive trunnions extending therefrom; a middle drive member resiliently coupled to the outer drive member; and an inner drive member resiliently coupled to the middle drive member.

Abstract: A method for updating at least one data element in a conference is disclosed. The conference can include a first node having at least a first server but no endpoints; a second node coupled to the first node, the second node having at least a second server but no endpoints; a first endpoint coupled to the first server; and a second endpoint coupled to the second server. The first and second nodes can form a free tree topology. In such a conference, an exemplary method includes sending an initial update from either (a) the first server belonging to the first node, or (b) the first endpoint, to the second server belonging to the second node; receiving the initial update by the second server; and sending, by the second server, the content of the initial update as an update to at least one of a third server or the second endpoint.

Abstract: Systems, methods, and media for retransmitting data using the SRTP are provided. In some embodiments, methods for retransmitting data using the SRTP are provided. The methods include: receiving at least one data unit associated with a media session; determining the index of the at least one data unit; determining the session key of the media session using the index; authenticating the at least one data unit using the session key; and retransmitting the at least one data unit.

Abstract: A device for carrying equipment on a human back, the device comprises: a shell comprising a back designed to rest against a human back when the device is worn, a front opposite the back, a bottom, a left side and a right side; at least one shoulder strap; a strap designed to couple equipment to the front of the device; a first reinforcing panel coupled to the left side of the shell; a second reinforcing panel coupled to the right side of the shell; and a third reinforcing panel coupled to the front of the shell; wherein, the first, second and third reinforcing panels are designed to maintain a gap between the back of the human and the equipment when the device is being worn and the equipment is coupled to the device.

Abstract: A recreational board carrier. The carrier can include a central portion, at least one longitudinal strap coupled to the central portion and extending therefrom, a coupler disposed at a distal end of the longitudinal strap, the coupler adapted to couple to a first end of a recreational board, a plurality of apertures defined in the longitudinal strap, and at least one carrying strap coupled to the central portion.

Abstract: A method of operating a motion-control system is provided. The motion-control system may include an actuator and a moveable component driven by the actuator. The method may include providing input that indicates a target value of a parameter of the motion of at least one of the actuator and the moveable component with an operator-input device that is mechanically decoupled from the moveable component. The method may also include controlling the operation of the actuator at least in part with a control signal, including generating the control signal at least in part by determining a control gain based at least in part on a control error between the target value of the parameter and an actual value of the parameter. Generating the control signal may also include multiplying the control gain by the control error or a value derived from the control error.

Abstract: An automatic tuning procedure can be used to allow a small, high efficiency ferrite antenna assembly to be used in various FM frequency based devices. The ferrite antenna can take the form of a rod or flat disk, for example, which can use a pick-up coil and tuning coil to provide sufficient signal strength using a small FM antenna. A balanced amplifier can be used to provide differential input in order to further reduce noise. A microcontroller can determine the strength of the FM signal at various frequencies and can automatically tune the operating frequency to optimize system performance.

Abstract: Systems, methods, and media for retransmitting data using the SRTP are provided. In some embodiments, methods for retransmitting data using the SRTP are provided. The methods include: receiving at least one data unit associated with a media session; determining the index of the at least one data unit; determining the session key of the media session using the index; authenticating the at least one data unit using the session key; and retransmitting the at least one data unit.

Abstract: The present technology relates to laminated ball bats and a methodology for making the same. The disclosed technology provides for a laminated blank suitable for machining into a laminated bat having a generic bat shape (such as a bat consisting of a handle and a barrel where the handle has a smaller diameter than the barrel) that offers greater flexibility in changing the bat's weight distribution. Using lamination technology, various portions of a blank may be constructed having different densities (and associated weights) thereby decoupling such blank's length/weight properties. Such technology provides a method of positioning a bat's center of mass (CM) at various locations along the bat thereby changing the location of the bat's sweet spot zone center. Bats constructed in accordance with the disclosed technology may have a variety of pre-selected weight distributions while maintaining a particular bat shape and a particular overall bat weight.

Abstract: A method of operating a motion-control system is provided. The motion-control system may include an actuator and a moveable component driven by the actuator. The method may include providing input that indicates a target value of a parameter of the motion of at least one of the actuator and the moveable component with an operator-input device that is mechanically decoupled from the moveable component. The method may also include controlling the operation of the actuator at least in part with a control signal, including generating the control signal at least in part by determining a control gain based at least in part on a control error between the target value of the parameter and an actual value of the parameter. Generating the control signal may also include multiplying the control gain by the control error or a value derived from the control error.

Abstract: The present technology relates to methodology for making laminated ball bats. The disclosed technology provides for a bat that is designed with a generic bat shape (such as a bat consisting of a handle and a barrel where the handle has a smaller diameter than the barrel) that offers greater flexibility in changing the bat's weight distribution. Using lamination technology, various portions of a bat may be constructed having different densities (and associated weights) thereby decoupling such bat's length/weight properties. Such technology provides a method of positioning a bat's CM at various locations along the bat thereby changing the location of the bat's sweet spot zone center. Bats constructed in accordance with the disclosed technology may have a variety of pre-selected weight distributions while maintaining a particular bat shape and a particular overall bat weight.

Abstract: The present technology relates to laminated ball bats and a methodology for making the same. The disclosed technology provides for a bat that is designed with a generic bat shape (such as a bat consisting of a handle and a barrel where the handle has a smaller diameter than the barrel) that offers greater flexibility in changing the bat's weight distribution. Using lamination technology, various portions of a bat may be constructed having different densities (and associated weights) thereby decoupling such bat's length/weight properties. Such technology provides a method of positioning a bat's CM at various locations along the bat thereby changing the location of the bat's sweet spot zone center. Bats constructed in accordance with the disclosed technology may have a variety of pre-selected weight distributions while maintaining a particular bat shape and a particular overall bat weight.

Abstract: A copyright protection system is provided in which copyrighted articles, such as documents and photos, have associated with the article magnetic material which is detected when the article is copied on a scanner/reproducing machine. The magnetic material may be secured to the article so that it cannot be removed without destroying the article, or the magnetic material may form part of the article. The scanner/reproducing machine is provided with a magnetic detection system for automatically detecting the copyrighted article.

Abstract: A magnetic assembly for detection and authentication of magnetic documents. The magnetic assembly includes a permanent magnet (PM), first and second magnetically soft high permeability pole pieces shaped to form a tapered, variable gap size magnetic circuit with the permanent magnet. The PM is located at a first gap between the first and second pole pieces. A magnetoresistive (MR) sensing element is located at or near the center of a second gap between said first and second pole pieces. The second gap and MR sensing element are proximate a magnetic document to be sensed. An electrical conductor is adjacent to the MR sensing element, but is electrically insulated therefrom. A direct current is passed through the electrical conductor to create a compensating bias field in the MR element which is combined with the bias field generated by the PM.