摘要:
An infrared imaging system having a focal plane array including an array of detector elements and a readout circuit and including nonuniformity correction circuitry on the focal plane array. The individual detector elements correspond to pixels of an infrared scene to be imaged. Offsets in detection signals from each pixel arising from nonuniformities in the individual detector elements in the array are corrected by storing offset correction values for each detector element and using the stored offset values to control correction circuitry as the respective detector element signals are read out. The detector array and readout circuit are preferably formed as a monolithic or hybrid structure and the offset correction is provided on the focal plane array prior to signal amplification and analog to digital conversion.
摘要:
A lithographic mask is illuminated with light from different directions such that intensities of a plurality of incident beams of light provide a largest possible integrated process window defined in terms of an allowed range for defining shapes. Constrained sets of intensity parameters are imposed. A first set of intensity parameters represents maximum possible intensities that can be permitted for overexposed tolerance positions. A second set of intensity parameters represents minimum possible intensities that can be permitted for underexposed tolerance positions. Optimum source intensities of incident beams are defined using a linear program and constraints. The optimum source intensities maximize an integrated range of dose and focal variations without causing printed shapes to depart from the allowed range. Apparatus are detailed and variations are described.
摘要:
An electrical connector including a housing; electrical contacts connected to the housing; and a mate assist system for assisting in mating the electrical connector to a mating electrical connector. The mate assist system includes a lever pivotably connected to the housing, a slider slidably connected to the housing, and a system for preventing unintentional movement of the lever from an unlocked position. The system for preventing unintentional movement of the lever includes a first latch adapted to be manually actuated by a user and a second latch on the slider adapted to be automatically moved by the mating electrical connector when the housing is initially mounted on the mating electrical connector. Both the first and second latches are moved to enable movement of the lever from the unlocked position.
摘要:
A radio frequency receiver for receiving supplementary data transmitted with a radio station signal. The supplementary data includes one or more information word fields containing supplementary data transmitted with the radio station signal. The receiver includes a host processor for processing the supplementary data; a supplementary data demodulator and decoder for demodulating and decoding a received radio signal to generate a stream of bits representing one or more information word fields; an information word type memory for storing one or more information word type fields; detection circuitry arranged to receive and compare the information word type field decoded by the supplementary data decoder with one or more information word type fields stored in the information word type memory, and to provide a matched condition signal in response to a match between one or more decoded information word type fields and one or more of the corresponding stored information word types fields. The receiver is arranged to, in response to the matched condition signal, cause the corresponding supplementary data to be processed by the host processor.
摘要:
A method is disclosed to obtain M final symbol decisions for signals received through N receive antennas that were transmitted in M parallel data layers, using a same spreading code from M transmit antennas. The method includes space-time equalizing the N received signals to generate M output signals from which at least inter-symbol interference is substantially removed and inter-layer interference is suppressed; despreading each of the M output signals for generating M soft symbol estimates; and processing the M soft symbol estimates to derive M final symbol decisions that are made in consideration of modeled residual inter-layer interference present in the space-time equalized M output signals. Processing includes operating a signal-plus-residual-interference (SPRI) detector that operates in accordance with a maximum likelihood (ML) technique, while space-time equalizing employs a linear minimum mean-square error (LMMSE) criterion. Transmitting may occur at a base station having the M transmit antennas, and receiving may occur at a mobile station having the N receive antennas.
摘要:
The present invention relates to a method and apparatus for performing an interference estimation in a spread spectrum system using a plurality of spreading codes with different code lengths, wherein the interference estimate is obtained based on a variance estimate of despread samples integrated over a predetermined code period over which said plurality of spreading codes are orthogonal. Thereby, an unbiased interference estimation with high accuracy and proper consideration of code orthogonality can be obtained.
摘要:
The invention concerns a sealing system for a multiterminal electrical connector (1) comprising a multiterminal seal (10) with several through-holes (11) passing right through the seal and each one designed to receive an electrical connection wire (5) and a tubular single-unit seal (20) partly enclosing the connection wire and inserted, at least partly, in one of the through-holes of the multiterminal seal.
摘要:
An electrical connector including a housing; electrical contacts connected to the housing; a shield connected to the housing; and a mating connector key connected to the housing. The key includes a front section and a rear section. A portion of the shield is located between the front and rear sections of the key to retain the key with the housing.
摘要:
A method for processing an incoming message in a handportable cellular telephone comprises looking up an identification of a sender of the message in a user-defined white list or black list before making the message available to the user of the telephone. The method thus allows for setting up a user-administrated spam filter for, e.g., SMS messages, e-mails, ringing tone or network setting messages. Access to the user-defined list may be password-protected, so as to prevent a user, such as a child, from amending the list, such amending being exclusively restricted to a person, such as a parent, administrating the phone. If the sender is not found in a user-defined white list, or if the sender is found in a user-defined black list, the message is discarded.