Provided is an image synthesizer for a vehicle.
An image synthesizer calculates the address of a reference position of a replacement area in the current image, and detects the replacement area with respect to the address.
An image synthesizer capable of displaying an image of a three-dimensional object with a small number of polygons in real time with a high resolution.
An image synthesizing section (28) combines input signals.
A data calculating section (31) adjusts, e.g., the gradation characteristics of the interpolating signal and outputs the resultant signal to the image synthesizing section (21).
A switch (30) is operated to select either the output signal of the image synthesizing section (28) or the output from a fixed pattern generating section (29) according to a control signal from a controller (13).
A predetermined display area P of a sub-image is synthesized and displayed in a predetermined display area Q of a main image displayed on a display (9) by an image synthesizing device.
The first and second compressed picture signals are combined by a picture synthesizing circuit (22).
Thus, the EPG and broadcast picture are displayed in a two-screen mode on a monitor (24).