Scanning conversion method and scan converter unit employing the

Details Scanning conversion method and scan converter unit employing the Scanning conversion method and scan converter unit employing the

1985-06-25

1987-04-14

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, H04N 701

Patent

active

046582932

ABSTRACT:
A scanning conversion method prepares, in order to convert 2:1 interlace scanning video signals formed by (2N+1)/2 lines (N: positive integer) into progressive scanning system video signals, a memory (23) having addresses corresponding to N+1 lines. The address of the memory (23) for N+1 lines are circulated thereby to progressively write the interlace scanning video signals in the addresses while reading the signals from the addresses subjected to the writing at a speed twice that in the writing repeatedly twice.

REFERENCES:
patent: 4364090 (1982-12-01), Wendland
patent: 4573080 (1986-02-01), Maze

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