VTR tracking automatic adjustment circuit using one-chip microcomputer

摘要

The apparatus lessens the discomport of the user and continuously provides high-quality video by automatically controlling the tracking delay value. It is composed of a microprocessor (A10) for receiving mode signals (E-E,SP,Trick Down), video/audio signal from video/audio head through the detectors (A15,A18), the reference signal (REF) from a servo section (A11), a video head switching signal (V-SW) and a track delay port (TRKDLY), and for sending display signal to a tracking displayer (A12) through a driving output port of tracking delay (LED).