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Helical scan

Index Helical scan

Helical scan is a method of recording high-frequency signals on magnetic tape. [1]

41 relations: Alpha, Ampex, Ampex 2 inch helical VTR, Audio signal, Azimuth, Azimuth recording, Bandwidth (signal processing), Betamax, Channel capacity, Digital Audio Tape, Experimental Television Center, Field (video), Fluid bearing, Helix, High fidelity, Inductor, IVC videotape format, Magnetic field, Magnetic tape, Omega, Quadruplex videotape, Rotary transformer, Signal, Society of Motion Picture and Television Engineers, Symmetric Phase Recording, Tape drive, Tape head, Tape transport, Toshiba, Type A videotape, Type B videotape, Type C videotape, U-matic, United States, VHS, Video, Video Cassette Recording, Video tape recorder, Videocassette recorder, Vision Electronic Recording Apparatus, VXA.


Alpha (uppercase, lowercase; ἄλφα, álpha, modern pronunciation álfa) is the first letter of the Greek alphabet.

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Ampex is an American electronics company founded in 1944 by Alexander M. Poniatoff.

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Ampex 2 inch helical VTR

From 1963 to 1970, Ampex manufactured several models of VTR 2-inch helical VTRs, capable of recording and playing back analog black and white video.

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Audio signal

An audio signal is a representation of sound, typically as an electrical voltage for analog signals and a binary number for digital signals.

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An azimuth (from the pl. form of the Arabic noun "السَّمْت" as-samt, meaning "the direction") is an angular measurement in a spherical coordinate system.

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Azimuth recording

Azimuth recording is the use of a variation in angle between two recording heads that are recording data so close together on magnetic tape that crosstalk would otherwise likely occur.

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Bandwidth (signal processing)

Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies.

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Betamax (also called Beta, as in its logo) is a consumer-level analog-recording and cassette format of magnetic tape for video.

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Channel capacity

Channel capacity, in electrical engineering, computer science and information theory, is the tight upper bound on the rate at which information can be reliably transmitted over a communication channel.

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Digital Audio Tape

Digital Audio Tape (DAT or R-DAT) is a signal recording and playback medium developed by Sony and introduced in 1987.

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Experimental Television Center

The Experimental Television Center (ETC) (1969-2011) was a nonprofit Electronic and Media Art center located in upstate New York.

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Field (video)

In video, a field is one of the many still images which are displayed sequentially to create the impression of motion on the screen.

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Fluid bearing

Fluid bearings are bearings in which the load is supported by a thin layer of rapidly moving pressurized liquid or gas between the bearing surfaces.

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A helix, plural helixes or helices, is a type of smooth space curve, i.e. a curve in three-dimensional space.

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High fidelity

High fidelity (often shortened to hi-fi or hifi) is a term used by listeners, audiophiles and home audio enthusiasts to refer to high-quality reproduction of sound.

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An inductor, also called a coil, choke or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it.

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IVC videotape format

IVC 2 inch Helical scan was a high-end broadcast quality helical scan analog recording VTR format developed by International Video Corporation (IVC), and introduced in 1975.

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Magnetic field

A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.

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Magnetic tape

Magnetic tape is a medium for magnetic recording, made of a thin, magnetizable coating on a long, narrow strip of plastic film.

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Omega (capital: Ω, lowercase: ω; Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the 24th and last letter of the Greek alphabet.

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Quadruplex videotape

2-inch quadruplex video tape (also called 2″ quad, or just quad, for short) was the first practical and commercially successful analog recording video tape format.

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Rotary transformer

A rotary (rotatory) transformer is a specialized transformer used to couple electrical signals between two parts that rotate in relation to each other.

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A signal as referred to in communication systems, signal processing, and electrical engineering is a function that "conveys information about the behavior or attributes of some phenomenon".

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Society of Motion Picture and Television Engineers

The Society of Motion Picture and Television Engineers (SMPTE) (rarely), founded in 1916 as the Society of Motion Picture Engineers or SMPE, is a global professional association, of engineers, technologists, and executives working in the media and entertainment industry.

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Symmetric Phase Recording

Symmetric Phase Recording is a tape recording (Computer storage media) technology developed by Quantum Corporation packs data across a tape's recording surface by writing adjacent tracks in a herringbone pattern: This eliminates crosstrack interference and guard bands so that more tracks of data can be stored on a tape.

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Tape drive

A tape drive is a data storage device that reads and writes data on a magnetic tape.

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Tape head

A tape head is a type of transducer used in tape recorders to convert electrical signals to magnetic fluctuations and vice versa.

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Tape transport

A tape transport is the collection of parts of a magnetic tape player or recorder that the actual tape passes through.

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, commonly known as Toshiba, is a Japanese multinational conglomerate headquartered in Tokyo, Japan.

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Type A videotape

1 inch type A (designated Type A by SMPTE) is a reel-to-reel helical scan analog recording videotape format developed by Ampex in 1965, that was one of the first standardized reel-to-reel magnetic tape formats in the 1 inch (25 mm) width; most others of that size at that time were proprietary.

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Type B videotape

1 inch type B VTR (designated Type B by SMPTE) is a reel-to-reel analog recording video tape format developed by the Bosch Fernseh division of Bosch in Germany in 1976.

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Type C videotape

1 inch Type C (designated Type C by SMPTE) is a professional reel-to-reel analog recording helical scan videotape format co-developed and introduced by Ampex and Sony in 1976.

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U-matic is an analogue recording videocassette format first shown by Sony in prototype in October 1969, and introduced to the market in September 1971.

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United States

The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.

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The Video Home System (VHS) is a standard for consumer-level analog video recording on tape cassettes.

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Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media.

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Video Cassette Recording

Video Cassette Recording (VCR) is an early domestic analog recording format designed by Philips.

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Video tape recorder

A video tape recorder (VTR) is a tape recorder designed to record and playback video and audio material on magnetic tape.

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Videocassette recorder

A videocassette recorder, VCR, or video recorder is an electromechanical device that records analog audio and analog video from broadcast television or other source on a removable, magnetic tape videocassette, and can play back the recording.

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Vision Electronic Recording Apparatus

Vision Electronic Recording Apparatus (VERA) was an early analog recording videotape format developed from 1952 by the BBC under project manager Dr Peter Axon.

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VXA is a tape backup format originally created by Ecrix and now owned by Tandberg Data.

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Slant azimuth.


[1] https://en.wikipedia.org/wiki/Helical_scan

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