33 results about "Delay encoding" patented technology

A method and apparatus for staggercasting, encodes a first signal representing content and encodes a second signal representing the content using encoding relatively more robust than the encoding of the first encoded content representative signal. A composite signal including at least the first and second encoded signals is generated, in which one of the first and second encoded signals is delayed with respect to the other encoded signal. If an error is detected in the composite signal, then the undelayed encoded signal is decoded to reproduce the content. Otherwise, the delayed encoded signal is decoded to reproduce the content.

The present invention relates to a propagation matrix modulus optimization fitting method and system based on differential evolution algorithm, comprising: determining target fitting accuracy tol and fitting frequency range; determining the range of pole numbers; determining the range of delay τ; The range of τ determines the maximum value of the delay encoding vector; the maximum value of the pole number encoding vector is determined based on the range of the number of poles; the number of solutions is determined to be N; the relevant parameters in the initial iteration process are initialized; the iterative calculation is performed based on the relevant parameters; The solution x in the population with the smallest δ * , get the number of poles and delays it contains, and perform the above steps to get new poles; according to the number of poles, delays and new poles obtained by the above steps, use vector fitting technology to calculate the modulus of the propagation function matrix Fitting, calculate the fitting error, and output the fitting result and fitting error. The above-mentioned method in the present invention introduces a differential evolution algorithm, which can solve this nonlinear optimization problem well, and improves efficiency.

The invention relates to the technical field of integrated circuits, in particular to a parallel pseudo-CSD encoder used for variable coefficient multipliers. The parallel pseudo-CSD encoder of the present invention comprises an operation logic circuit and an output logic circuit; the input terminal of the operation logic circuit is connected with external input data, and its output terminal is connected with the first input end of the operation logic circuit; the output terminal of the output logic circuit The second input terminal is connected to external input data, and its output terminal is connected to the coefficient input terminal of the subsequent multiplier. The beneficial effect of the present invention is that while ensuring that the code system after the pseudo-CSD encoding has the same number of non-zero bits as the traditional CSD encoding, parallel operation logic is used to eliminate the carry propagation logic generated in the traditional CSD encoding process, thereby improving the pseudo-CSD The operation speed of the encoder makes it irrelevant to the length of binary digits to be encoded, and belongs to a fixed-delay encoding circuit, which greatly improves the data throughput capability of the pseudo-CSD encoder. The invention is especially applicable to parallel pseudo-CSD encoders with variable coefficient multipliers.

The invention discloses an optical path delay encoding method and encoding system. The method includes the following steps: acquiring one or more beams of optical pulse signals, and inputting the optical pulse signals into the optical path delay encoding system to obtain a delay Optical pulse sequence; input the delayed optical pulse sequence to a single photon detector in sequence, and the single photon detector performs photon counting detection on the delayed optical pulse sequence to obtain a corresponding counting pulse signal sequence; according to the counting pulse The encoding structure in the signal sequence decodes the count pulse signal sequence. The object of the present invention is to provide an optical path delay encoding method and system, through which the anti-noise performance of the receiving system can be improved, and the time-domain loss caused by the encoding method at the transmitting end in the laser radar detection can be made up. Waste problem, and the encoding system has a simple structure, low implementation cost, high application value, and good operability.