rotary two-head helical scan system

The transducers scan in a helical fashion and include video and audio heads.

Provided is an X-ray CT device capable of controlling the scan speed while keeping the pitch of a helical scan constant.

The NSR# method improves on the AMPR method, by increasing the in-plane image resolution of CT scanners, in the helical scanning mode.

The setting means sets coverage of a helical scan in the direction of the body axis.

The invention relates to a CT method with helicoidal scanning of an examination area by means of a conical beam of rays.

A helical scan-type magnetic recording and reproducing apparatus adapted to VTR or DAT.

A helical scan magnetic tape recorder has a magnetic tape threading and guiding system.

As a special case, the invention is applicable to helical fan-beam scanning with one-dimensional detector arrays.

When the helical scan reaches one end of the set coverage, the determination means determines whether or not the position of the top plate matches a predetermined scan end position.

Digital instrumentation magnetic tape data recorders employing helical scan techniques or fixed head techniques and having either of the following

The invention aims at recording a data reduced digital video signal on a longitudinal record carrier by means of a recording apparatus of the helical scan type.

Digital instrumentation magnetic tape data recorders employing helical scan techniques or fixed head techniques and having any of the following

Digital instrumentation magnetic tape data recorders employing helical scan techniques or fixed head techniques, having any of the following

A tracking control system is proposed for realizing a tracking control in a trick play reproduction mode in a helical scan reproduction apparatus.