| 摘要 |
PURPOSE:To prevent the difference of circuit characteristics of two channels from being prominent on a reproducing plane by transmitting every half(odd- numbered line and even-numbered line) of a signal forming an image at every frame alternately with the characteristics of first and second channels. CONSTITUTION:A video signal converted to digital data by an A/D converter 1, after being delayed by 1H at line memory 3, is inputted to line memory 4 which performs time base expansion, and goes to a signal of first channel CH1. Such input video signal is also inputted to memory 5 of time base expansion without being delayed, and goes to a signal of second channel CH2. Every half(odd-numbered line and even-numbered line) of the signal forming the image is transmitted at every frame alternately with the characteristics of the first and second channels CH1, CH2 even when the difference of the circuit characteristic exists between the first and second channels CH1, CH2. Thereby, it is possible to average influence due to the difference of the characteristics of both channels on the reproducing picture, and to prevent it from being recognized as color shade and luminance nonuniformity.
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