Signal compression recording and reproducing method

Details Signal compression recording and reproducing method Signal compression recording and reproducing method

1992-09-03

1995-01-24

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 54, 369 64, 360 32, G11B 700

Patent

active

053847636

ABSTRACT:
Disclosed is a signal compression recording and reproducing method for cases wherein signals of similar frequency ranges occur sequentially. The method compresses a signal to record it without conversion into digital data, and then to reproduce the thus-compressed signal. The signal compression recording method determines a predetermined range, and detects an amplitude of a signal at a starting point, and a continuous period that the amplitude variation quantity from the starting point lasts within the upper and lower deviation limits, thereby recording the amplitude of the signal at the point and the continuous period. The signal reproducing method obtains the amplitude of the next signal and the current signal according to the state value, and reproduces the signal by the equation, ##EQU1## where m=1, 2, 3 . . . , a.sub.m .epsilon.{a.sub.1, a.sub.2, a.sub.3 . . . } (amplitude of the reproduced signal); n.sub.m .epsilon.{n.sub.1, n.sub.2, n.sub.3 . . . } (continuous period of the reproduced signal); N=1, 2 . . . , n.sub.m ; and b.sub.m (N) is the amplitude of the reproducing signal.

REFERENCES:
patent: 4764913 (1988-08-01), Sasaki et al.
patent: 5220554 (1993-06-01), Taniwa

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