Method and apparatus for processing sampled data signals by utilizing preconvolved quantized vectors
US4977604A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Feb 17, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/9017
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic system for processing sampled data input signals includes an electronic memory which stores a set of preprocessed vectors V.sub.1 f(m, . . . ) thru V.sub.N *f(m, . . . ) where f(m, . . . ) is a sampled data function, having any number of dimensions m, . . . . * is a convolution operator, and V.sub.1 thru V.sub.N are a finite set of N unprocessed vectors each of which represents an anticipated group of input signal samples. After these preprocessed vectors are stored, input signals are processed in real time by (a) a circuit which samples the input signal; (b) a circuit which compresses the sequence of samples that is taken into a smaller sequence of index signals that correspond to the indexes 1 thru N of the unprocessed vectors; (c) a circuit which receives the smaller sequence of index signals and reads from the memory those preprocessed vectors whose indexes match the received index signals; and (d) a circuit which adds together the read preprocessed vectors while maintaining a predetermined offset between them as they are added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.