Columbia University

Other

Ge Lighting Solutions LLC

Licencia Talalmanyokat Ertekesito Vallalat

Beton-es Vasbetonipari Muvek

Laszlo Toth

Yannis Tsividis

Aurel A Lazar

George Palaskas

Laszlo Nagy

Péter Álmosdi

Laszlo Papp

Balazs Nagy

Gabor Fejes

Gabor Joo

Erno Toth

Erno K Simonyi

Imre Heltay

Endre Jankovics

Zoltan Varnagy

A luminaire includes a housing having an external surface and an internal surface defining an interior volume, with an LED light source mounted on a mounting surface within the interior volume, an internal inter-surface structure within the interior volume in thermal communication with the board and in thermal communication with at least one housing internal surface. The internal inter-surface structure configured to spread heat generated by the LED light source laterally along the internal inter-surface structure. The interior volume of the housing is substantially closed to external air flow. The housing external surface being an about smooth surface free of extruding heat sink fins or ridges, and having a shape sufficient to inhibit the trapping of water or dirt.

LED luminaire with internal heatsink

Methods for decoding a signal encoded by a Time Encoding Machine (TEM) include defining a plurality of time-windows, each time-window corresponding to a portion of a TEM-encoded signal and made up of a plurality of trigger values, at least two of the time-windows overlapping, decoding each of the time-windows using a Time Decoding Machine (TDM) to generate a decoded time-window, and stitching the decoded time-windows together to generate a TEM-decoded signal.

Real-time time encoding and decoding machines

Analog signals can be fully encoded as an asynchronous time sequence generated by a time encoding machine (TEM). With knowledge of the parameters of the time encoding machine, the asynchronous time sequence can be decoded using a non-linear time decoding machine. In one embodiment, the non-linear time decoding machine generates a set of weighted Dirac delta functions centered in the intervals of the asynchronous time sequence of the time encoding machine output. The weighting of each of the delta functions is determined by the parameters of the TEM as well as the values of the time sequence. The generation of the series of delta functions is a nonlinear operation (). The input signal can be recovered from the series of weighted delta functions by () applying this series through an impulse response filter.

Time encoding and decoding of a signal

Techniques are provided for the implementation of a signal processing circuit () which expands the dynamic range of the signal processing circuit () without interrupting the output of the circuit. The techniques can receive an input signal (), process the signal () through one of a plurality of dynamically modifiable signal processing circuits, and switch () to processing the signal through another of the plurality of signal processing circuits without disturbing the output of the system.

Active filter circuit with dynamically modifiable internal gain

A signal processing system () comprises an input terminal (), and a main path having a main filter input gain unit () coupled to said input terminal (), a main filter () and an output gain unit (). An auxiliary path includes an auxiliary filter input gain unit () coupled to the input terminal (), an auxiliary filter () and an auxiliary filter output gain unit (). An adder () is coupled to the output gain units () for generating an output signal to an output terminal (). The gains of the gain units are adjusted by a control unit () responsive to a detecting signal from a detector ().

Active filter circuit with dynamically modifiable gain

Cellulose-based package material having an increased adsorption capacity

A heating installation for local use is disclosed which is to be operated by aggregate fuel having both direct and indirect thermal emission, with a reactor receiving the combustion chamber, and a waste-heat flue above the reactor as well as an outer heat accumulator case, wherein a waste-heat flue is disposed in the space above the reactor and which flue is essentially developed by having a helical elevation between an outer heat accumulator case and an inner heat accumulator case, while air channels are formed opening into the inner space of the air space to be heated between the reactor case which is made of metal encircling directly the reactor case and the outer heat accumulator case which is connected with at least one, adherent part of the combustion chamber, while it is also connected with the air space to be heated, wherein both the outer and inner heat accumulator cases are of hollow walls, and are fitted together from ring-shaped ceramic modular elements, wherein the modular elements have section-shaped distance rings arranged fitted together in pairs and filled with sand and provided with interruptions for the continuous elevation of the waste-heat flue without change of direction.

Local heating installation

Concrete elements and a lifting mechanism are secured against tilting at the time of form removal, and the formwork is fixed in place. In the apparatus, a forming unit, a concreting unit and a form removal unit are provided. The forming unit has a single rigid form adapted to shape the bottom and the sides of the elements or products, is open on top and is assembled for use as required. The form removal unit has means for maintaining the product and the removal unit itself in a fixed position against tilting, as well as means for maintaining the formwork in a fixed position, and means for actuating them.

Apparatus for producing concrete elements of high dimensional accuracy

A cellulosic starting material, substantially devoid of nitrogen values is moistened to bring its water content to at least 50%, pasteurized by steam treatment during which the temperature is increased to a maximum of about 70.degree. C and maintained at such temperature for about 12 hours during which time a relative humidity of about 100% is likewise maintained whereby the starting material is digested. The material is cooled to about 55.degree. C to proliferate thermophilic metabolite producing microorganisms. This temperature is maintained for about 36 hours and is then lowered to about 40.degree.-45.degree. C and maintained at that level for about 24 hours whereby another group of microorganisms is proliferated. The substrate so produced is cooled to 25.degree. C or less. The process provides the substrate with metabolites that protect it against microorganisms which compete for substrate carbon sources with the macrofungi to be cultivated on the substrate.

Growing community of inventors

Budapest, Hungary

Laszlo Toth