Increasing the resolution of a digitized, time-dependent signal

Details Increasing the resolution of a digitized, time-dependent signal Increasing the resolution of a digitized, time-dependent signal

1984-12-20

1987-02-10

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358138, H04N 514

Patent

active

046426892

ABSTRACT:
In a method of increasing the resolution of a digitized time-dependent signal, particularly a picture signal, which consists of a sequence of sampling values, teaches the forming at one sampling value an associated mean value with higher resolution. The associated mean value is formed from the sampling value and at least one succeeding and/or preceding sampling value. When the sampling value is replaced by the associated mean value, obliteration of rapid signal changes is eliminated; and circuit complexity is minimized by the fact that a sampling value is replaced by the associated mean value only when these two values differ from one another by no more than a preset amount. A circuit for implementing this method is also disclosed.

REFERENCES:
patent: 4168509 (1979-09-01), Hartmann
patent: 4334244 (1982-06-01), Chan et al.
patent: 4408233 (1983-10-01), Nahon et al.
patent: 4450483 (1984-05-01), Coriello
patent: 4573070 (1986-02-01), Cooper

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