33 results about "Alternating polarization" patented technology

Methods and apparatus are provided for transmitting alternate-polarization phase-shift-keyed data. The output of a laser is modulated to optically encode electronic data using phase shift keying (PSK) to generate an optical signal. An alternate polarization PSK (APol-PSK) signal is generated by alternating the polarization of the optical signal using a modulator such that successive optical bits have substantially orthogonal polarizations.

The invention is an apparatus and method for allowing multiple individuals to view discrete images while remaining in close proximity to each other. It encompasses a split screen polarized lens, with alternate polarization portions, fitting over a viewing monitor and pairs of corresponding polarized glasses. Each pair of polarized glasses matches a portion of the screen lens with the same polarization so that the human viewer wearing vertically polarized glasses may only view the vertically polarized portion of the screen and the human viewer wearing horizontally polarized glasses may only view the horizontally polarized portion of the screen.

An apparatus and method for stereoscopic 3D image projection and viewing using a single projection source, alternating polarization, and passive eyewear. This approach is applicable to frame sequential video created using existing 3D graphics APIs, as well as other video signal formats, and is compatible with existing digital light processor (DLP) technology for both front and rear projection systems. An alternating polarizer in the form of a magnetomechanically resonant polarizing filter actuator is used to modulate the projected image. A preferred embodiment enables an existing DLP projection system to be enhanced with 3D capability.

A computing device includes a display having a striped polarizer, the striped polarizer includes a set of sub-areas having a first polarization interspersed between another set of sub-areas having a second polarization. The sub-areas are arranged to provide an alternating polarization across a dimension of the display. The computing device may be configured to receive information specifying a privacy display mode, select a privacy display mode based upon the received information, receive input display data configured to represent information for display, generate, in response to selecting the privacy display mode, output display data by inverting a first portion of pixels in the input display data which are associated with a first polarization, and not inverting a second portion of pixels in the input display data which are associated with a second polarization, and provide the output display data to a display.

A stacked electronic arrangement provides independent upgradability of active component boards and radiator boards, enabling quick changes in chip set and alternate polarizations, and includes: an active tile circuit card assembly (CCA); a passive radiator CCA; a tile frame; and a heat exchanger. The active tile CCA includes transmit/receive modules that accept, amply and transmit radar signals. The passive radiator CCA includes patch radiator plugins that receive and then radiate the amplified signal from the modules. The tile frame separates the active tile and the passive radiator CCAs. An elongated casing of the heat exchanger creates an accommodating space for air flow, and forms a first inlet, a second inlet, and a central exhaust plenum between the first and second inlets. High density tins are positioned within the accommodating space between the first and second inlets, and which have openings to the exhaust outlet.

The invention provides a space-time polarization anti-interference method based on an alternate polarization sensitive array, and the method employs the alternate polarization sensitive array as a receiving model, and the array reduces the calculation burden and mutual coupling effect of the method. On the basis of a multilinear constraint criterion and space-time adaptive processing, polarizationinformation of signals is added according to polarization characteristics of satellite signals and interference signals. Compared with the traditional method, the method has the advantages that the influence of the cross-coupling effect of the polarization sensitive array with the orthogonal double dipoles is effectively reduced, and the anti-interference performance is not influenced; the problem that satellite communication and positioning are affected due to the fact that satellite signals are attenuated when expected satellite signals and interference signals are close in incoming wave direction or small in interval is effectively solved. The problem that the anti-interference capability fails when the two-dimensional domain information is similar is effectively solved; two-dimensional domain information is expanded to three-dimensional domain information, joint anti-interference of a space-time polarization three-dimensional domain is achieved, and a theoretical basis is providedfor anti-interference of a satellite receiver.

Controlling the polarization state of signals to be transmitted from a MIMO capable radio base station node to a plurality of user equipment, which radio base station node comprises a precoder unit connecting a first and a second virtual antenna port to a respective first and second transmit antenna port, by the steps of controlling (S10) a relative phase between transmitted signals from the first and second transmit antenna port to provide a predetermined pair of orthogonal polarization states for signals transmitted on the first and second virtual antenna ports, and interchanging (S20) the polarization states of the first and second virtual antenna ports, to provide transmitted polarized signals with alternating polarization states.

Disclosed is a method and apparatus relating generally to scalar atomic magnetometers. The disclosed methods and apparatus utilize a pressurized sample chamber and a high frequency pulsed pump laser to increase spin polarization and significantly suppress heading errors. These methods and apparatus may also include alternating polarization of the pump light between pulses.

A metrology system includes a radiation source configured to generate a plurality of light beams, each light beam centered at a different wavelength; a dynamic polarization controller configured to dynamically alternate a polarization orientation of each of the plurality of light beams; a polarization multiplexer configured to combine the plurality of light beams having a dynamically alternating polarization orientation into a combined light beam; a reflector configured to direct the combined light beam toward a substrate; an interferometer configured to receive light that has been diffracted from the pattern on the substrate and to generate output light according to interference between the diffracted light; and a detector configured to detect an optical signal based on output light from the interferometer and output an intensity signal that varies over time.

The invention relates to an acoustic wave device comprising a ferroelectric material layer (C) and a substrate (S). A layer of ferroelectric material is located between a first electrode (E1) and a second electrode (E2) deposited on the surface of the substrate or is an integral part of the substrate, the layer of ferroelectric material comprising a positive first polarization region ( D1) and a negative second polarization region (D2). For the field of surface wave sensors, the structure can preferably be made into conversion regions with pitches on the order of hundreds of nanometers, so as to be suitable for high-frequency (on the order of one gigahertz) applications.

The disclosure concerns an embedded antenna having alternating polarization resonators. The embedded antenna includes a substrate, a first antenna radiator, and a second antenna radiator. The substrate has a first surface and a second surface opposite the first surface. The first antenna radiator and second antenna radiator are each disposed on the first surface. The first antenna radiator has a first length extending along the substrate and further includes a first minor radiator element and a second minor radiator element disposed on each terminal end of the first length. The second antenna radiator has a second length wherein the second length is less than the first length. Additionally, the first length and the second antenna radiator comprise a parallel orientation. In some embodiments, the embedded antenna further includes a third antenna radiator and a fourth antenna radiator where each is disposed on the second side.