Abstract:
Techniques and mechanisms for determining an operation mode of an audio-video (AV) device. In an embodiment, communication logic of the AV device may be configured at different times for different ones of a plurality of operation modes including an AV source operation mode for providing AV information to another device and an AV sink operation mode for receiving AV information from another device. In response to a detected event, control logic initializes the communication logic of the AV device into a default mode which prevents operation of the communication logic as an AV source.
Abstract:
Electrolytic protection of steel-reinforced concrete bodies such as bridges and building facades is achieved with carbon material (3, 12, 23) inserted into the concrete body (6, 10, 21). The carbon material is connected to act as a anode with the steel reinforcement (1, 11, 22) as a cathode, so that corrosive chloride ions migrate away from the steel reinforcement. The carbon material is inserted so as also to act as a reinforcement. In one arrangement carbon textile material is provided between inner and outer grout-filled plastics ducts (2, 4, 5) fixed around post-tensioned steel cables (1). In another arrangement a carbon rod (12), or pin (23), is fixed between a concrete body (23) and a steel I-beam (22).
Abstract:
Techniques and mechanisms for determining an operation mode of an audio-video (AV) device. In an embodiment, communication logic of the AV device may be configured at different times for different ones of a plurality of operation modes including an AV source operation mode for providing AV information to another device and an AV sink operation mode for receiving AV information from another device. In response to a detected event, control logic initializes the communication logic of the AV device into a default mode which prevents operation of the communication logic as an AV source.
Abstract:
This invention relates to racquet stringing apparatus and includes a portable string tensioner and a portable string anchor. The tensioner operatively engages a frame of a racquet, grips a length of a string with which the frame is being strung, and, via displacement means thereof, tensions a length of the string. The string anchor operatively anchors to the frame a length of string that has been tensioned by the tensioner. Each of the string anchor and the string tensioner is thus a self-contained device that interacts between a racquet frame and a string only. The devices are used to sequentially tension string spans in a head part of a racquet frame during stringing of the frame. The devices are easily portable, for instance in a sports kit bag, which clearly may be convenient to a user.
Abstract:
A real-time radar surveillance system comprises at least one land-based non-coherent radar sensor apparatus adapted for detecting maneuvering targets and targets of small or low radar cross-section. The radar sensor apparatus includes a marine radar device, a digitizer connected to the marine radar device for receiving therefrom samples of radar video echo signals, and computer programmed to implement a software-configurable radar processor generating target data including detection data and track data, the computer being connectable to a computer network including a database. The processor is figured to transmit at least a portion of the target data over the network to the database, the database being accessible via the network by at least one user application that receives target data from the database, the user application providing a user interface for at least one user of the system.
Abstract:
A flat panel rectangular or elliptical loudspeaker has one or more anisotropic diaphragms (14, 15), made of double skinned fluted polypropylene copolymer (core flute) or corrugated cardboard, having a longitudinal bending strength greater than the transverse bending strength. The diaphragm is vibrated by a driver unit (16) which comprises a magnet (17) and voice coil (18). In this version the magnet (17) is mounted on the rear diaphragm (15) and the voice coil (18) is mounted on the front diaphragm (14). The two diaphragms (14, 15) are mounted at their edges to a frame (11) with the driver unit (16) mounted in the space enclosed by the frame and the diaphragms.
Abstract:
This invention relates to racquet stringing apparatus and includes a portable string tensioner and a portable string anchor. The tensioner operatively engages a frame (14) of a racquet (12), grips a length of a string (21) with which the frame is being strung, and, via displacement means thereof, tensions a length of the string. The string anchor (26) operatively anchors to the frame a length of string that has been tensioned by the tensioner (24). Each of the string anchor and the string tensioner is thus a self-contained device that interacts between a racquet frame and a string only. The devices are used to sequentially tension string spans in a head part of a racquet frame during stringing of the frame. The devices are easily portable, for instance in a sports kit bag, which clearly may be convenient to a user.
Abstract:
A 3D avian radar sampling system comprises a 3D volume scanning radar system and an avian track interpreter. The radar system tracks bird or other airborne targets within its local 3D surveillance volume which could be characterized by a cylinder with a typical range of 0 to 10 km and typical altitude of 0 to 10,000 ft above ground level. Special scanning methods are employed to ensure that volume revisit times are suitably short and track data produce 3D target trajectories, both of which are needed for avian activity reports to be meaningful and timely. The avian interpreter uses the track data from the volume scanning radar to create detailed avian activity reports that convey bird abundance and behavior within the 3D cylindrical volume on intervals including hourly, daily, weekly, monthly and yearly. Hourly activity reports (updated typically every 15 minutes) provide enhanced situational awareness of developing hazards and are actionable, allowing operators to dispatch wildlife control personnel to respond to threats. Older activity reports help uncover recurring patterns to guide management efforts. Applications include bird aircraft strike hazard (BASH) management and natural resource management. The apparatus and methods are equally suitable for other airborne targets such as general aviation aircraft and ultralights, making the invention appropriate for homeland security, as well as ground-based sense and avoid systems needed for unmanned aerial systems (UAS).
Abstract:
A 3D avian radar sampling system comprises a 3D volume scanning radar system and an avian track interpreter. The radar system tracks bird or other airborne targets within its local 3D surveillance volume which could be characterized by a cylinder with a typical range of 0 to 10 km and typical altitude of 0 to 10,000 ft above ground level. Special scanning methods are employed to ensure that volume revisit times are suitably short and track data produce 3D target trajectories, both of which are needed for avian activity reports to be meaningful and timely. The avian interpreter uses the track data from the volume scanning radar to create detailed avian activity reports that convey bird abundance and behavior within the 3D cylindrical volume on intervals including hourly, daily, weekly, monthly and yearly. Hourly activity reports (updated typically every 15 minutes) provide enhanced situational awareness of developing hazards and are actionable, allowing operators to dispatch wildlife control personnel to respond to threats. Older activity reports help uncover recurring patterns to guide management efforts. Applications include bird aircraft strike hazard (BASH) management and natural resource management. The apparatus and methods are equally suitable for other airborne targets such as general aviation aircraft and ultralights, making the invention appropriate for homeland security, as well as ground-based sense and avoid systems needed for unmanned aerial systems (UAS).
Abstract:
Techniques and mechanisms for determining an operation mode of an audio-video (AV) device. In an embodiment, communication logic of the AV device may be configured at different times for different ones of a plurality of operation modes including an AV source operation mode for providing AV information to another device and an AV sink operation mode for receiving AV information from another device. In response to a detected event, control logic initializes the communication logic of the AV device into a default mode which prevents operation of the communication logic as an AV source.