| 摘要 |
A circuit for automatically controlling the picture of television is provided, which includes a microprocessor 20 for comparing input signal data with reference data of a signal stored therein and generating a control signal corresponding to the result data, an automatic gain controller 30 whose port SW1 is connected to the resistance value according to corresponding control signal inputted to its control port C, when a data value received from an input port IN becomes equal to the reference data value stored in microprocessor 20, to compensate the singnal data received from input port IN and send it to an output port 10, and an analog/digital converter 40 for converting the analog signal outputted from automatic gain controller 30 into a digital signal and sending it to the input port 11 of microprocessor 20. |
