Y–C Picture–in–Picture (PIP) Controller

The MC44462 Y–C PIP controller is a low cost member of a family of high performance PIP controllers and video signal processors for television. It is a follow–up to the MC44461 PIP and has a modified input selection to allow higher performance in TV systems which have S–Video inputs on the back panel. The S–Video input is separate luma (luminance) and chroma components. It is NTSC compatible and contains all the analog signal processing, control logic and memory necessary to provide for the overlay of a small picture from a second non synchronized source onto the main picture of a television. All control and setup of the MC44462 is via a standard two pin I2C bus interface. The device is fabricated using BICMOS technology. It is available in a 56–pin shrink dip (SDIP) package.

The main features of the MC44462 are:

• Switchable PIP Composite Video Signals – Video 1 and Video 2

• S–Video Output Allows High Performance in TV

• Two PIP Sizes; 1/16 and 1/9 Screen Area

• Freeze Field Feature

• Variable PIP Position in 64–X by 64–Y Steps

• PIP Border with Programmable Color

• Programmable PIP Tint and Saturation Control

• Automatic Main to PIP Contrast Balance

• Vertical Filter

• Integrated 64 k Bit DRAM Memory Resulting in Minimal RFI

• Minimal RFI Allows Simple Low Cost Application into TV

• I2C Bus Control – No External Variable Adjustments Needed

• Operates from a Single 5.0 V Supply

• Economical 56–Pin Shrink DIP Package