| 摘要 |
PURPOSE:To obtain easily the differential from a reference temp. distribution and changes with time by comparing a video signal which is already photographed and stored in one screen memory with the present input video signal, storing only the variable value in a display memory, and displaying. CONSTITUTION:A video signal is converted into a digital signal, stored in a memory 5, and added simultaneously to an arithmetic part 4. In the arithmetic part 4, only the differential between the data, which is already stored in the memory 5 in accordance with the temp. value and the temp. range specified by a display control panel 12, and the present input signal data is stored in a memory 6. The signal stored in the memory 6 is synchronized with a standard TV signal by an output of an output timing generating part 20 to read out, and synthesized with a character signal and a gray scale signal in a data selector 7. The synthesized digital signal is converted into an analog signal in a digital/analog converter 8, converted into the standard TV signal in a standard signal conversion part 9, and displayed on an image receiver 10 (monitor) of a standard television. |
