Scan rate conversion apparatus and method

Details Scan rate conversion apparatus and method Scan rate conversion apparatus and method

1987-10-28

1989-06-06

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358138, H04N 701

Patent

active

048376191

ABSTRACT:
A signal processor useful for a non-integer scan rate conversion and non-integer sampling rate conversion, applies multiplicative factors to a multiplicity of initial data elements which are then summed to obtain a data element at the new sampling or scanning rate. Each multiplicative factor is a function of the conversion factor, the multiplied initial data element, and the data element of the converted sampling or scanning rate. This procedure utilizes all the data elements in the initial sequences and establishes a converted sampling or scanning rate with a significant reduction of processing steps.

REFERENCES:
patent: 4398217 (1983-08-01), Peters
patent: 4468708 (1984-08-01), Coleman, Jr.
patent: 4551753 (1985-11-01), Nishizawa et al.
patent: 4620225 (1986-10-01), Wendland et al.
Line Interpolation by K. H. Barratt and J. H. Taylor, Sep. 1976, IBA Technical Review, pp. 49-62.
Digital Standards Conversion by J. L. E. Baldwin, Sep. 1976, IBA Technical Review, pp. 3-15.

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