摘要:
The disclosure relates to the processing of sets of digital signals coming from different outputs of an optical sensor such as a line of photo-detectors. There is proposed a device which, singly or severally and after simple programming of the circuits that form it, can be used to make a video transformer for optical sensors. This device comprises chiefly:--several memorization circuits each designed to receive a digital signal coming from one of the outputs of the sensor; --programmable addressing means to write in the memorization circuits and to read these circuits;--change-over or selector means to offer the choice from among different configurations of links between the inputs of the device and the ports of the memorization circuits. Application in particular to the processing Of the digital video signals coming from lines of photo-detectors.
摘要:
A method of decoding a received data word (r) having been transmitted over a radio communication channel, the corresponding sent data word (m) having been encoded as a code word (c), the method includes:multiplying of the received data word by a parity-check matrix,and if the result of the multiplication is zero: performing an algebraic decoding of the received data word without error correction, otherwise performing an error correction by estimating the transmission error, subtracting the estimated error from the received data word, and performing an algebraic decoding of the result of the subtraction, wherein for estimation of the transmission error is used to identify an approximate location of potential errors and the Viterbi algorithm is only applied for these locations, thus avoiding iterations in error-free areas.
摘要:
The present invention relates to a method of decoding a received data word (r) having been transmitted over a radio communication channel, the corresponding sent data word (m) having been encoded as a code word (c), the method comprises the steps of multiplying of the received data word by a parity-check matrix, and if the result of the multiplication is zero: performing an algebraic decoding of the received data word without error correction, otherwise performing an error correction by estimating the transmission error, subtracting the estimated error from the received data word, and performing an algebraic decoding of the result of the subtraction, wherein for estimation of the transmission error R.H′ is used to identify an approximate location of potential errors and the Viterbi algorithm is only applied for these locations, thus avoiding iterations in error-free areas.
摘要:
In a method of communicating with a mobile station in a cell of a cellular telecommunication network having a microcell layer with a plurality of microcells each comprising at least one relay station and a macrocell layer with a macrocell covering a plurality of microcells, a call in the microcell layer is effected between the mobile station and a set of relay stations, the number of which is a cardinal number at least equal to two, allocated to the call. The relay stations allocated to the call can change during the call, and the call is handed over from the microcell layer to the macrocell layer when it is not possible to allocate to the call a number of relay stations corresponding to the cardinal number. A base transceiver station for implementing the invention is also disclosed.
摘要:
Device for scanning acquisition of a digital image by means of a photosensitive linear detector (11). The device is able to undergo movements perpendicular to the scanning direction. The device also includes two other photosensitive linear detectors (12, 13). The three photosensitive linear detectors being placed so that the detection is carried out substantially along a U.
摘要:
Device for scanning acquisition of a digital image by means of a photosensitive linear detector (11). The device is able to undergo movements perpendicular to the scanning direction. The device also includes two other photosensitive linear detectors (12, 13). The three photosensitive linear detectors being placed so that the detection is carried out substantially along a U.
摘要:
A folding item of furniture of the box-bench type possesses an operating device for a member which is movable in rotation relative to a frame. The movable member comprises a first panel alternately forming the backrest of the bench in the open position and the lid of the box in the closed position, and a second panel, perpendicular to the first, forming a seat part in the open position. A third panel forms the other seat part and is articulated relative to the second. An operating member mounted pivotably on the movable member has an active locking position in which it maintains the movable member in the open position. Three cushions are provided, the first and second cushions being fixed respectively to the first and thirst panels and the third cushion lying on the second cushion so as to be slidable relative thereto. The seat outfitted with cushions can thereby be closed with the cushions stored under the first panel, without the cushions being crushed.