Image signal interface system

Claim 2

An image signal interface system for use between a plurality of image signal sources having different γ characteristics and a single image output device for producing a hard copy based on an image signal produced by one of the image signal sources at a time, said image signal interface system comprising: a plurality of selectable γ correcting tables for converting the image signals from the image signal sources to image signals which match the γ characteristics of the image output device; at least one density coefficient table for varying at least the maximum density and contrast of the image signals from the image signal sources; a lookup table setting unit for converting the image signals from one of the image signal sources according to correction data from said γ correcting table and said density coefficient table corresponding to said one of the image signal sources such that γ correction and gradation correction occur simultaneously in said lookup table setting unit; and control means for initiating transmission of said image signals from said one of the image signal sources and for supplying information from said plurality of γ correcting tables and from said at least one density coefficient table to said lookup table setting unit.

Claim 3

An image signal interface system according to claim 1, wherein said image output device comprises a laser beam printer.

Claim 4

An image signal interface system according to claim 1, wherein each of said image signal sources comprises a medical image diagnostic apparatus.

Claim 5

An image signal interface system according to claim 1, wherein said image output device comprises a laser beam printer and each of said image signal sources comprises a medical image diagnostic apparatus.

Claim 6

An image signal interface system for use between a plurality of image signal sources having different γ characteristics and a single image output device for producing a hard copy based on an image signal produced by one of the image signal sources at a time, said image signal interface system comprising: a communication interface for receiving control signals from said image signal sources; an A/D converter; a first switch for selectively connecting each of said image signal sources to said A/D converter; a plurality of device tables containing attribute data corresponding to each of the image signal sources; a plurality of selectable γ correcting tables for converting the image signals from the image signal sources to image signals which match the γ characteristics of the image output device; at least one density coefficient table for varying at least the maximum density and contrast of the image signals from said one of the image signal sources; a lookup table setting unit for converting the image signals from one of the image signal sources according to correction data from said γ correcting table and said density coefficient table corresponding to said one of the image signal sources such that γ correction and gradation correction occur simultaneously in said lookup table setting unit; control means for receiving information from said communication interface and said memory means and for controlling said A/D converter with said attribute data and supplying said lookup table setting unit with data from said γ correcting table and said density coefficient table; and an output means for reproducing an image based on the image signal from said one of the image signal sources.

Claim 7

An image signal interface system for use between a plurality of image signal sources having different γ characteristics and a single image output device for producing a hard copy based on an image signal produced by one of the image signal sources at a time, said image signal interface system comprising: a communication interface for receiving control signals from said image signal sources; an A/D converter; a first switch for selectively connecting each of said image signal sources to said A/D converter; a plurality of device tables containing attribute data corresponding to each of the image signal sources; a plurality of selectable γ correcting tables for converting the image signals from the image signal sources to image signals which match the γ characteristics of the image output device; at least one density coefficient table for varying at least the maximum density and contrast of the image signals from said one of the image signal sources; a lookup table setting unit for converting the image signals from one of the image signal sources according to correction data from said γ correcting table and said density coefficient table corresponding to said one of the image signal sources such that γ correction and gradation correction occur simultaneously in said lookup table setting unit; control means for receiving information from said communication interface and said memory means and for controlling said A/D converter with said attribute data and supplying said lookup table setting unit with data from said γ correcting table and said density coefficient table; and an output means for reproducing an image based on the image signal from said one of the image signal sources.