System for controlling low power mode of TV by using single output pin of microprocessor to send signals to demagnetization circuit and switched mode power supply

摘要

The arrangement and the respective display unit comprise a microprocessor, a demagnetization circuit and a switched mode power supply operating in a normal mode and in a low power mode. The microprocessor is coupled via the same output to the switched mode power supply for controlling the low power mode and to the demagnetization circuit for controlling a demagnetization operation. In a preferred embodiment, the control signal from the microprocessor provides a control for a low power burst mode, and is further combined with a power on-indicative signal via a logical AND combination for controlling the demagnetization circuit.