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Picture-in-Picture (PIP) Controller

The MC44460 Picture–in–Picture (PIP) controller is a low cost member of a family of high performance PIP controllers and video signal processors for television. 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 MC44460 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 MC44460 are:

? Two NTSC CVBS Inputs

? Switchable Main and PIP Video Signals

? Single NTSC CVBS Output Allows Simple TV Chassis Integration

? 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