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

摘要

A scanning conversion method prepares, in order to convert 2:1 interlace scanning video signals formed by
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.