| 摘要 |
PURPOSE:To make memory capacity independent of the precision of a D/A converter by adding digital data which is one address before to digital data from a sense amplifier on digital basis and obtaining input data to the D/A converter. CONSTITUTION:A frequency divider 16 which inputs a horizontal synchronizing signal HS, vertical synchronizing signal VS, and picture element synchronizing signal SC as a basic clock outputs a nonvolatile memory address for a corrected picture element, and data in an addressed memory is outputted from the sense amplifier 18. The output data is inputted as one of augend data to an adder 19 and added to the output of a temporary storage device 20 which is one address before. Digital sum data from this adder 19 is inputted to the D/A converter 21 and an analog signal for correction appears at an analog output terminal 22. |
