Abstract: A backward compatible enhancement to ATSC-VSB transmissions is provided to enable intra-field channel estimation for better channel equalization. One or more time-frequency waveforms are inserted into the transmitted signal with systematic time and frequency variation synchronized to the currently available field sync. A coherent demodulator may then directly estimate the channel frequency response. The power of the inserted waveform(s) is small compared to the existing 8-VSB signal, such that existing receivers will function as intended with only minimal degradation of performance.

Abstract: The invention relates to an optical system that particularly allows an improved detection of signal light propagating from a light source (1) through a flat glass substrate (11). SC-modes of this signal light that would normally be totally internally reflected at the backside (10) of the substrate (11) are coupled out by a first diffractive optical element DOE (21). To map all signal light leaving the substrate (11) onto a single target location (51), a focusing lens (31) and a second DOE (41) are disposed in the optical path behind the substrate (11). The DOEs (21, 41) may for example be a ID sinusoidal grating or a 2D blaze grating. The optical system may particularly be applied in an investigation apparatus for detecting multiple spots of a fluorescent sample material.

Abstract: This relates to a method of automatically selecting preferred voxels from a group of voxels for pharmacokinetic modeling of a biological system, where the voxels contain data points indicating a change of activity-levels over time. For each respective voxel the changes of the data points over time with at least one noise level value, where the comparing is performed in accordance to a pre-defined selection rule. Then, those voxels where the result of the comparing obeys the selection rule are then selected as preferred voxels.

Abstract: A structure comprises a fabric (28) with electronic components (10, 12) mounted thereon. The fabric (28) comprises a warp and weft of fibres (30, 32), each of the warp and weft comprising a combination of electrically conducting fibres (30) and electrically non-conducting fibres (32). The electronic components (10, 12) are connected to at least one electrically conducting fibre (30). The electronic components, in a preferred embodiment comprise a plurality of end of line elements (10) and a corresponding plurality of groups of line elements (12), each group of line elements (12) connected to an end of line element (10).

Abstract: A recording device with loading means for loading a single record carrier comprises means for detecting not only that the loading means has reached its end position but also provides information that the loading means is currently loading or unloading the recording medium. This allows the recording device to start actions while the loading means is operating to prepare for the completion of the loading operation. A progress indication of the loading operation allows even better timing of actions by the recording device. A recording device may start filling a buffer once a certain progress of the loading operation is reached and the buffer size is sufficient to bridge the remaining duration of the loading operation. Thus the loss of information to be recorded is reduced.

Abstract: The acquisition of MR images while utilizing sub-sampling of the RF signals generated in the patient 21 to be examined is known. Such sub-sampling methods require at least two RF receiving coils which should not have a substantial component of their sensitivity vectors in common. According to the invention at least two coils 22a, 22b are used, a first one (22a) having its sensitivity vector extending substantially transversely of its physical coil plane whereas a second one (22b) has its sensitivity vector extending substantially parallel to its physical coil plane. The coils can thus be placed close to the surface of the patient without interfering with each other. They can be arranged in such a manner that their planes are oriented parallel to the main magnetic field Bo. Moreover, the coils can be arranged so as to overlap substantially, so that they provide the same field of view.

Abstract: The invention relates to an MR apparatus (1) having an examination volume (6) of the open type such that the examination volume (6) is also accessible laterally, having main coil devices (2) for producing a main magnetic field that are disposed on two opposite sides of the examination volume (6), having at least one high-frequency coil device (5) for exciting the proton precession and having at least one two-part gradient coil device (4), disposed on opposite sides of the examination volume (6), for the positional coding of the excitation of the proton precession. The dynamic Lorentz forces have hitherto resulted in a high oscillation level. It is an object of the invention to provide an MR apparatus (1) that has only a low oscillation level.

Abstract: A process of manufacturing a semiconductor device including a buried channel field effect transistor comprising, for realizing said field effect transistor, steps of forming a stacked arrangement of semiconductor layers on a substrate including an active layer (3), forming a recess in said active layer, referred to as gate recess (A4), for constituting a channel between source and drain electrodes, and forming a submicronic gate electrode (G) which is in contact with the active layer (3) in said gate recess (A4), wherein: the gate recess width (Wri) and the gate length (LGo) are manufactured with predetermined respective values, in order that the access region, defined between the gate (G) and the gate recess edge (31), has an access region width (2&Dgr;o), derived from said predetermined values (Wri, LGo), which is sufficiently small to permit the transistor of functioning according to saturation current characteristics having continuous slopes.