helical scan
1Helical scan — is a method of recording high bandwidth signals onto magnetic tape. It is used in video tape recorders, video cassette recorders, digital audio tape recorders, and some computer tape drives. Comparison to linear tape recording In a fixed head… …
2Helical Scan — [dt. »schneckenförmige Abtastung«], Aufzeichnungs und Leseverfahren bei Magnetband Laufwerken, das schräg verlaufende Spuren verwendet. Helical Scan Laufwerke verfügen über eine schnell rotierende Kopftrommel (etwa 2000 8000 Umdrehungen pro… …
3helical scan — In radar scanning, varying the azimuth and elevation of the antenna continuously to generate a spiral pattern of the beam. This scan pattern is used in fire control and GCI (ground controlled interception) radars. Also called spiral scanning …
4Helical Scan — VP The way that most videotape by the head …
5helical scan — A magnetic tape storage method that increases media capacity by laying data out in diagonal strips. Used in video tape recorders …
6Helical cone beam computed tomography — Helical (or spiral) cone beam computed tomography is a type of three dimensional computed tomography (CT) in which the source (usually of x rays) describes a helical trajectory relative to the object while a two dimensional array of detectors… …
7scan — i. To search the sky for any hostile aircraft. The area of the scan for a typical two aircraft formation is indicated in the illustration. In flight, the term means “Search the sector indicated and report any contacts.” ii. To make a sweep of… …
8Scan, helical CAT — A conventional computerized axial tomography scan (CAT scan or CT scan) is an x ray procedure which combines many x ray images with the aid of a computer to generate cross sectional views and, if needed, three dimensional images of the internal… …
9Helical CAT scan — A conventional computerized axial tomography scan (CAT scan or CT scan) is an x ray procedure which combines many x ray images with the aid of a computer to generate cross sectional views and, if needed, three dimensional images of the internal… …
10Scan, spiral CAT — A conventional computerized axial tomography scan (CAT scan or CT scan) is an x ray procedure which combines many x ray images with the aid of a computer to generate cross sectional views and, if needed, three dimensional images of the internal… …
