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1385results about How to "Reliable delivery" patented technology

Digital security multimedia sensor

A fully digital camera system provides high-resolution still image and streaming video signals via a network to a centralized, server supported security and surveillance system. The digital camera for collects an image from one or more image transducers, compressing the image and sending the compressed digital image signal to a receiving station over a digital network. A plurality of image transducers or sensors may be included in a single camera unit, providing array imaging such as full 360 degree panoramic imaging, universal or spherical imaging and field imaging by stacking or arranging the sensors in an array. The multiple images are then compressed and merged at the camera in the desired format to permit transmission of the least amount of data to accomplish the desired image transmission. The camera also employs, or connects to, a variety of sensors other than the traditional image sensor. Sensors for fire, smoke, sound, glass breakage, motion, panic buttons, and the like, may be embedded in or connected to the camera. Data captured by these sensors may be digitized, compressed, and networked to detect notable conditions. An internal microphone and associated signal processing system may be equipped with suitable signal processing algorithms for the purpose of detecting suitable acoustic events and their location. In addition, the camera is equipped with a pair of externally accessible terminals where an external sensor may be connected. In addition, the camera may be equipped with a short-range receiver that may detect the activation of a wireless ‘panic button’ carried by facility personnel. This ‘panic button’ may employ infrared, radio frequency (RF), ultrasonic, or other suitable methods to activate the camera's receiver.
Owner:PR NEWSWIRE

Methods and apparatus for streaming media multicast

A method for a cache for providing streaming media data to a client system includes receiving a request from a client system for a media meta file, the media meta file comprising a unicast URL for a stream of media data, retrieving the media meta file, initiating a connection with a media server associated with the unicast URL, selecting a multicast channel for broadcast of the stream of media data, modifying the media meta file to include data associated with the multicast channel to form a modified media meta file, sending the modified media meta file to the client system, receiving the stream of media data from the media server, and providing the stream of media data on the multicast channel. The client system receives the stream of media data on the multicast channel.
Owner:NETWORK APPLIANCE INC

Thermal mechanical fatigue test system for hollow air-cooled turbine blade

ActiveCN102539135AReliable deliveryReliable mechanical loadMachine part testingTurbine bladeEngineering
The invention discloses a thermal mechanical fatigue test system for a hollow air-cooled turbine blade, which includes a loading subsystem, a heating subsystem, an air cooling subsystem, a water cooling subsystem and a controlling subsystem, wherein the loading subsystem vertically clamps the turbine blade; the heating subsystem is horizontally placed in the middle part of the loading subsystem for heating the turbine blade; the air cooling subsystem is horizontally arranged and connected with the loading subsystem through a pipeline; the water cooling subsystem is horizontally arranged and connected with the loading subsystem and the heating subsystem through the pipeline; and the controlling subsystem is arranged at the upper part of the heating subsystem and connected with the loading subsystem, the heating subsystem and the air cooling subsystem through a cable. The thermal mechanical fatigue test system is used for simulating the working stress field, the temperature field and the loading spectrum of the examination cross section of the hollow air-cooled turbine blade. The thermal mechanical fatigue test system satisfactorily overcomes the difficulty for simulating the working stress field, the temperature field and the loading spectrum of the examination cross section of the hollow air-cooled turbine blade, and provides the technical basis and the safety guarantee for the safe and reliable working of the aero engine.
Owner:BEIHANG UNIV
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