Apparatus for improving sharpness when recording continuous-tone pictures

Claim 2

An arrangement for improving sharpness in the recording of a continuous-tone pictures, comprising: electro-optic picture scanning means for scanning a picture to produce picture signals; a recording medium; electro-optic recording means connected to said picture scanning means and responsive to said picture signals to produce said picture on said recording medium; means for generating a sharpness signal; modulating means for modulating said sharpness signal in dependence upon at least a selected portion of the picture pattern being scanned for its characteristics; control means for generating a control signal for influencing the modulation of said sharpness signal; and means for superimposing said modulated sharpness signal and said picture signals to influence the sharpness of pictures recorded by said recording means.

Claim 3

An arrangement according to claim 1, wherein said control means includes a color selection circuit connected to said picture scanning means, said picture scanning means further comprising means for generating color separation signals representing a scanned color; said color selection circuit includes means for comparing said color separation signals with predetermined signals representing a color to be selected and means for generating said control signal for influencing the modulation of said sharpness signal when said color is selected.

Claim 4

An arrangement according to claim 1, wherein said control means includes a contrast evaluation circuit for generating said control signal for influencing the modulation of said sharpness signal.

Claim 5

An arrangement according to claim 1, wherein said modulating means includes a switch for connecting and disconnecting the sharpness signal with respect to said recording means in response to said control signal.

Claim 6

An arrangement for improving sharpness in the recording of continuous-tone pictures, comprising: electro-optic picture scanning means for scanning a picture to produce picture signals; a recording medium; electro-optic recording means connected to said picture scanning means and responsive to said picture signals to produce said picture on said recording medium; means for generating a sharpness signal; modulating means for modulating said sharpness signal in dependence upon the picture content of at least a portion of the picture pattern being scanned; control means for generating a control signal for influencing the modulation of said sharpness signal; and means for superimposing said modulated sharpness signal and said picture signals to influence the sharpness of pictures recorded by said recording means, said control means including a picture pattern mask and means for scanning said mask to generate said control signal for influencing the modulation of said sharpness signal.

Claim 7

An arrangement for improving sharpness in the recording of continuous-tone pictures, comprising: electro-optic picture scanning means for scanning a picture to produce picture signals; a recording medium; electro-optic recording means connected to said picture scanning means and responsive to said picture signals to produce said picture on said recording medium; means for generating a sharpness signal; modulating means for modulating said sharpness signal in dependence upon the picture content of at least a portion of the picture pattern being scanned; control means for generating a control signal for influencing the modulation of said sharpness signal; and means for superimposing said modulated sharpness signal and said picture signals to influence the sharpness of pictures recorded by said recording means, said control means including a picture pattern mask and means for scanning said mask to generate said control signal for influencing the modulation of said sharpness signal.