Video circuit and video signal processing and control techniques for controlling the "tilt" of a video display that may be implemented with LinBiCMOS technology

A circuit for reducing a tilt of a video picture on a color monitor of the type in which vertical displacement of a scanning beam is controlled by a magnitude of a scan control signal, formed by the process comprising the following steps:

• forming a MOS transistor in a semiconductor substrate for providing a scan control signal having substantially constant magnitude;
• and
• forming a bipolar circuit in the semiconductor substrate for controlling a charge on a capacitor connected to establish a control voltage on a gate of said MOS transistor.

A method for reducing a tilt of a video picture on a color monitor of the type in which vertical displacement of a scanning beam is controlled by a magnitude of a scan control signal, comprising the steps of:

• constructing a circuit to provide said scan control signal using a MOS transistor that has substantially no gate leakage current for providing the scan control signal with substantially constant magnitude;
• and
• operating bipolar transistors connected as a translinear cell to maintain a voltage on a capacitor connected to establish a control voltage on a gate of said MOS transistor.