Gelissen

Ben Gelissen, Nijmegen NL

Patent application number	Description	Published
20090201189	FLASH A/D CONVERTER - A flash analog-to-digital converter comprising a resistive reference ladder, a set of comparators for comparing the analog input signal with the reference voltages of the ladder to provide a digital code representing a coarse quantization of the input signal, a set of switches connected to the reference ladder and controlled by said digital code to provide an analog representation of the coarse quantization of the input signal, means to derive from said analog representation of the coarse quantization and from the input signal one or more residue signals and a fine analog-to-digital converter stage to generate a digital code representing a fine quantization of the one or more residue signals. For minimizing the number of switches required, each selector for one residue signal selects voltages of one half of the ladder at two values of the coarse quantization and the output signals of the two selectors for that residue signal are reversed by a crossover switch when the coarse quantization passes its center value.	08-13-2009

Patent application number	Description	Published
20110034609	MICROSPHERE COMPRISING A POLYMER CORE, A SHELL AND AN ABSORBER - The present invention relates to Microsphere comprising a core and a shell, in which the core comprises a polymer and at least two laser light absorber. The particle size of the microsphere is for example between 50 nm and 50 micron and preferably between 100 nm and 10 micron. The core comprises a thermoplastic polymer, the shell comprises a compatibilizer. The laser light absorbers are chosen from oxides, hydroxides, sulphides, sulphates and phosphates of metals such as copper, bismuth, tin, aluminum, zinc, silver, titanium, antimony, manganese, iron, nickel, barium, gallium, germanium, arsenic and chromium and combinations of two or more of these metals, laser light absorbing (in)organic dyes or metaloxide coated flakes. The invention further relates to the use of the microsphere as a laser marking additive and to a process for the production of the microsphere by reactive extrusion.	02-10-2011

Patent application number	Description	Published
20100033676	APPARATUS AND METHOD FOR OBSERVING AN EYE, AS WELL AS OCT-MODULE - An apparatus for observing an eye comprises an imaging device (	02-11-2010