Abstract: A description is given of a multi-stack optical data storage medium (20) for rewritable recording using a focused radiation beam (30) entering through an entrance face (16) of the medium (20) during recording. The medium (20) has a substrate (1). Deposited on a side thereof is a first recording stack (2) with a phase-change type recording layer (6). The first recording stack (2) is present at a position most remote from the entrance face (16). At least one further recording stack (3), with a phase-change type recording layer (12) is present closer to the entrance face (16) than the first recording stack (2). A metal reflective layer of Cu, transparent for the radiation beam (30), is present in the further recording stack (3) and has a thickness between 2 and 10 nm. A transparent spacer layer (9) is present between the recording stacks (2, 3).

Abstract: The present invention relates to a method for post-processing a 3D digital video signal, said digital video signal having a plurality of views with associated disparity maps. The invention is characterized in that said method comprises a first step of generating a projected disparity map from an original disparity map, and a second step of filling holes within said projected disparity map, the first step comprising the sub-step of removing isolated projected pixels on said projected disparity map by filtering them.

Abstract: The present invention relates to a speech synthesis apparatus comprising:—means (102, 104) for inputting of natural speech,—means (106, 108, 110, 112, 113) for processing the natural speech to provide personalized speech segments (114),—means (118) for synthesizing of speech based on the personalized speech segments.

Abstract: A display apparatus (1) comprises a matrix display device (DD) with pixels (10) wherein particles (14) move in a fluid (13) between electrodes (6, 6?, 7). An optical state of the pixels (10) is defined by a value of a drive voltage (VDi) and a duration (Di) of a drive period (TDi) during which the drive voltage (VDi) is present across the pixel (10). A DC-balancing circuit (3) controls the amplitudes of the drive voltages (VDi) and/or durations (Di) of drive periods (TDi) to obtain a substantially zero time-average value (N) across each pixel (10) or across each sub-group of pixels. This control of the amplitude of the drive voltages (VDi) and/or the duration (Di) of the drive periods (TDi) allows minimizing the image retention, without requiring reset pulses causing all pixels (10) to become temporarily white or black.