AFT summing circuit for varactor-type tuning systems
AFT-wide automatic frequency control system and method
AGC Arrangement for a television system
AGC circuit for double conversion digital television tuner
AGC Circuit responsive to intermediate gray level in video signa
AGC circuit with 60 hertz hum compensation
AGC keying signal circuit
AGC System for a television receiver
AGC-Clamped video amplifier
Airborne system for display of collimated images
Aircraft visual approach/landing reproducer device and system
Airplane route viewing system
Airport runway monitoring system
Alignment and recognition apparatus
Alignment apparatus
Alternate field luminance enhancement in a spectrum conserving t
Amplified video signal distributing apparatus
Amplifier circuit to prevent video "buzzing" sound caused by a t
Amplifier for a video signal from an image pick-up device
Amplifier having different low-frequency and high-frequency feed