| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase visibility of an output video image by performing optimal color adjustment, suppressing a change in color information on a video signal that varies with the length of a transmission path connecting a slave unit and a master unit. <P>SOLUTION: For connecting a slave unit 1 and a master unit 2 via a transmission path L, a color adjustment circuit 240 of the master unit 2 performs color adjustment based on a video reference signal generated by a reference signal generator 110 of the slave unit 1. On the basis of output data from the color adjustment circuit 240, a color information measuring circuit 241 of the master unit 2 measures color information that varies with the length of the transmission path L, and digitizes the measured color information. A differential detection circuit 243 of the master unit 2 detects a lag in color information by calculating difference between the measured data by the color information measuring circuit 241 and color threshold information stored beforehand in a color-information-data storage circuit 242. An adjustment control circuit 244 eliminates the lag in color information in the case of color adjustment based on a video signal output to a monitor 20 by controlling the color adjustment circuit 240 on the basis of output data from the differential detection circuit 243. <P>COPYRIGHT: (C)2013,JPO&INPIT |
