Rotary head magnetic recorder/reproducer

Claim 1

A rotary head type magnetic recording and reproducing apparatus for recording and reproducing a video signal sequentially on a magnetic tape driven by a capstan by alternately using two rotary heads provided on a rotating body, said two heads having head gap angles which are slightly different from each other and which carry out azimuth recording such that each field of a frequency modulated video signal is reproduced by following a record locus which is oblique to the length of the magnetic tape, said apparatus comprising: (a) a means for driving said magnetic tape at a speed which is lower than the tape speed used in a recording mode when said apparatus is reproducing still pictures; (b) at least one additional rotary magnetic head for reproducing still pictures, provided on said rotating body, and having a head gap angle which is the same as that of one of said two rotary magnetic heads, said apparatus reproducing one recording track repeatedly by using two of said rotary magnetic heads having a same head gap angle when said magnetic tape is moving slowly and stopped; (c) a means for detecting a noise generation section within reproduced signals of at least one magnetic head; (d) a means for comparing the phase difference between the signal of said means for detecting and a pulse signal synchronized with the rotational phase of said rotating body when an output of said means for detecting occurs within a predetermined rotational phase position of said rotating body; (e) a means for stopping the travel of said magnetic tape after driving a specified length of said magnetic tape responding to the output of said means for comparing when said tape is moving slowly by said means for driving.