Rotary head reproducing apparatus that displays date, time, and frame number even when such data code information is absent during a search marker using interpolation based on head switching pulse

摘要

A rotary head type reproducing apparatus capable of displaying each data code indicative of date, time and frame number, without interruption even during reproduction from a recording track on which a recording is made with such data code absent. In the apparatus, a recording track having a data code signal recording area in which a search marker is recorded is scanned by a rotary head, and when the search marker is reproduced and outputted, the search marker is demodulated by a search marker demodulating circuit and, simultaneously, the output of a data interpolating circuit is selected at the input of a switch. Each time a variation point of an SWP (head switching pulse) is detected by an SWP detecting circuit, the data interpolating circuit increments the respective count values of a frame counter, a time counter and a date counter decoded from a data code, on the basis of a data code obtained immediately before the demodulation of the search marker, and outputs the result to a system control circuit. The system control circuit displays the respective count values on a display.