Method and apparatus for reading samples of a time-dependent sig

Details Method and apparatus for reading samples of a time-dependent sig Method and apparatus for reading samples of a time-dependent sig

1985-02-06

1987-11-10

Heckler, Thomas M.

Boots, shoes, and leggings

G06F 1202

Patent

active

047061880

ABSTRACT:
A method and apparatus for preparing samples of a time-dependent signal (Se) in a data processing system which comprises an arithmetic unity (1), a control unit (2), a memory (3) and an address modification unit (13) wherein with a stored dataset of individual samples, for updating these step-by-step during every successive sampling period and respectively reading out the dated dataset and supplying it to the arithmetic unit (1), is achieved such that an address sequence which traverses a prescribed memory area is output via the address modification unit (13), so that a sequence of samples is written. Subsequently, the memory area is cyclically traversed with a plurality of address strings, whereby the stored samples are successively read out onto a bus line (4) and, when reaching an individual memory location within each of the address strings, the oldest sample stored there is overwritten by a further sample. The method is distinguished by a minimum of re-storing operations. The invention is used in signal processors, particularly those for filtering jobs.

REFERENCES:
patent: 4447873 (1984-05-01), Price et al.
patent: 4509187 (1985-04-01), Ackland et al.
patent: 4516202 (1985-05-01), Kadowaki
IBM Journal of Research Development, vol. 26, No. 4 of Jul. 1982, pp. 413-423.

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