The present invention refers to a method and apparatus for reconstruction of a nonuniformly sampled bandlimited analog signal x.sub.a (t), said nonuniformly sampled signal comprising N subsequences x.sub.k (m), k=0, 1, . . . , N-1, N.gtoreq.2, obtained through sampling at a sampling rate of 1/(MT) according to x.sub.k (m)=x.sub.a (nMT+t.sub.k), where M is an integer, and t.sub.k =kMT/N+.DELTA.t.sub.k, .DELTA.t.sub.k being different from zero. The invention comprises forming a new sequence y(n) f...

The object of this invention is to provide a new nonuniformly spaced antenna array, where the most optimum positions of the array elements, and their corresponding amplitudes, are systematically determined by a rigorous synthesis technique of the given radiation pattern, and/or its requirements and specifications, in order to achieve it with the minimum possible number of array elements. This new array will be designated the Nonuniformly, Optimally Spaced Antenna Array, or in short, the NOSA Arr...

In a pattern recognition apparatus, light from an original on which a pattern to be recognized is depicted is focused by an optical system. The focused image is sampled by a two-dimensional array sensor. The pattern depicted on the original is recognized based on a multiresolution partial image obtained by the sampling. A moving device moves the optical axis of the optical system relative to the original in response to a control signal based on the result of the recognition.

A method and system for adjusting at position of an adjustable portion of a predefined shape. The predefined shape is displayed on a display with an adjust handle positioned near a reference point on the predefined shape. The position of the adjustable portion of the predefined shape is then adjusted in accordance with user input to reposition the adjust handle. The predefined shape is then again displayed having the adjustable portion as adjusted by the user input. The user input is performed b...

A semiconductor device (83)including a transistor (85) with a nonuniformly doped channel region can be formed with a relatively simple process without having to use high dose implants or additional heat cycles. In one embodiment, a polysilicon layer (14) and silicon nitride layer (16) are patterned at the minimum resolution limit. The polysilicon layer is then isotropically etched to form a winged gate structure (32). A selective channel implant step is performed where ions are implanted through...

An electromagnetic device of the type having a rotor and a stator with magnetically coacting peripheries, with the stator having toothed pole structures, has the stator pole teeth set at nonuniform spacing to improve the operating characteristics of the device. When the device is a stepping motor, improved step accuracy is attained through reduction of residual (or detent) torque. Reduction of airborne noise is reduced in all motor types.

A light guide plate (2) into which light beams are introduced from a light source has a light incident surface (21) receiving the light beams, a light emitting surface (22) transmitting the light beams therethrough, and a bottom surface (23) opposite to the light emitting surface. The light incident surface is between the bottom surface and the light emitting surface. The bottom surface has at least two sets of diffusing elements (231, 232) for diffusing and reflecting light beams toward the lig...

The object of this invention is to provide a method for a new nonuniformly spaced array with uniform amplitudes for sonar, seismic and electromagnetic applications, where the optimum positions of the array elements along its axis are systematically determined by a new semi-rigorous synthesis technique. This new array will give a radiation pattern with much lower side-lobe levels than an equivalent uniformly spaced array with uniform amplitudes, and its optimal relationship between the side-lobe ...

The present invention is a composite comprising a fibrous web and a matrix composition nonuniformly distributed in the major plane of a fibrous web.

A photoconductive member comprises a substrate and a layer constituted of an amorphous material containing Si and Ge and exhibiting photoconductivity, said layer having a layer region containing nitrogen ununiformly in the direction of layer thickness, the distribution concentration curve of nitrogen in the direction of layer thickness being smooth and the maximum distribution concentration being present in said layer. An amorphous layer of Si containing at least one of oxygen and carbon may ove...