Patent ID: 6278802
Filing Date: 2001-08-21
Classification: H04N

Abstract:
A method for recording a FREQUENCY-MODULATION HALFTONE IMAGE using a recorder, said method comprising the following steps:(A) rendering a CONTONE IMAGE at a RECORDER RESOLUTION;(B) storing said CONTONE IMAGE as CONTONE DATA VALUES in a first memory store;(C) generating THRESHOLD VALUES at a resolution which is different from said RECORDER RESOLUTION;(D) converting the resolution of said THRESHOLD VALUES to said RECORDER RESOLUTION;(E) comparing each of the CONTONE DATA VALUES of said first memory store in sequence with a corresponding THRESHOLD VALUE;(F) storing the result of said comparison as a HALFTONE DATA VALUE in a second memory store, constituting the FREQUENCY-MODULATION HALFTONE IMAGE; and,(G) recording the HALFTONE IMAGE on a photosensitive material using the recorder.