M (videocassette format)

Last updated
M
Media type Magnetic Tape
Encoding NTSC, PAL
Standard Interlaced video
Usage Video production

M is the name of a professional analog videocassette format created around 1982 by Matsushita and RCA. Developed as a competitor to Sony's Betacam format, M used the same videocassette (and the same oxide-formulated magnetic tape stock) as VHS, much the same way that Betacam was designed to take advantage of cheap and readily available Betamax videocassettes,

Contents

Like Betacam, M recorded component video and used a much faster linear tape speed. A cassette that would yield 120 minutes on a VHS VCR at SP speed would only yield 20 minutes on a M VCR.

The format was called "M" due to the shape of the threading path of the tape around the helical scan video head drum, which resembles a letter M. (This is also how the U-matic format got its name, for its U-shaped tape path in the VCR.) The M-shaped tape path was retained from VHS. An example M VCR is the Panasonic AU-300B, [1] also sold as the Ampex ARC-40, and the M format was also sold by Ampex as the ARC format. [2]

M had a similar 4-head recording system to Betacam, but the chrominance signals were recorded as two FM subcarriers of the main chrominance track FM carrier.


M found little success in the professional/industrial video production market. This might have been due to RCA's Broadcast Products division, which marketed the M format in the United States under the "Hawkeye" brand name, going out of business in 1984. Thus NBC was one of the few broadcasters to use the format. Weak marketing by Matsushita for M might have been a factor as well.

M was also marketed by Panasonic (a division of Matsushita) under the Recam (REcording CAMera) name, and by RCA as Hawkeye. [3] [4] [5] [6]

M was succeeded in 1986 by the MII format developed by Panasonic, using a similar-sized cassette with completely different signal processing and a metal-particle tape formulation.

See also

Related Research Articles

<span class="mw-page-title-main">Magnetic tape</span> Medium used to store data in the form of magnetic fields

Magnetic tape is a medium for magnetic storage made of a thin, magnetizable coating on a long, narrow strip of plastic film. It was developed in Germany in 1928, based on the earlier magnetic wire recording from Denmark. Devices that use magnetic tape could with relative ease record and playback audio, visual, and binary computer data.

<span class="mw-page-title-main">VHS</span> Consumer-level analog videotape recording and cassette form standard

VHS is a standard for consumer-level analog video recording on tape cassettes invented in 1976 by the Victor Company of Japan and was the competitor to the ill-fated Sony Betamax system.

<span class="mw-page-title-main">Videotape</span> Magnetic tape used for storing video and sound simultaneously

Videotape is magnetic tape used for storing video and usually sound in addition. Information stored can be in the form of either an analog or digital signal. Videotape is used in both video tape recorders (VTRs) and, more commonly, videocassette recorders (VCRs) and camcorders. Videotapes have also been used for storing scientific or medical data, such as the data produced by an electrocardiogram.

<span class="mw-page-title-main">JVC</span> Japanese international electronics corporation

JVC is a Japanese brand owned by JVCKenwood. Founded in 1927 as the Victor Talking Machine Company of Japan and later as Victor Company of Japan, Ltd., the company is best known for introducing Japan's first televisions and for developing the Video Home System (VHS) video recorder.

<span class="mw-page-title-main">S-VHS</span> Improved version of VHS

S-VHS (スーパー・ヴィエイチエス), the common initialism for Super VHS, is an improved version of the VHS standard for consumer-level video recording. Victor Company of Japan introduced S-VHS in Japan in April 1987, with their JVC-branded HR-S7000 VCR, and in certain overseas markets soon afterward. By the end of 1987, the first S-VHS VCR models from other competitors included Hitachi VT-2700A, Mitsubishi HS-423UR, Panasonic PV-S4764, RCA VPT-695HF, and Toshiba SV-950. It has been standardized as IEC 60774-3 and IEC 60774-4.

<span class="mw-page-title-main">Betamax</span> Consumer-level analog video tape recording and cassette form factor standard

Betamax is a consumer-level analog recording and cassette format of magnetic tape for video, commonly known as a video cassette recorder. It was developed by Sony and was released in Japan on May 10, 1975, followed by the US in November of the same year.

<span class="mw-page-title-main">Helical scan</span> Method of recording high-frequency signals on magnetic tape

Helical scan is a method of recording high-frequency signals on magnetic tape. It is used in open-reel video tape recorders, video cassette recorders, digital audio tape recorders, and some computer tape drives.

<span class="mw-page-title-main">Camcorder</span> Video camera with built-in video recorder

A camcorder is a self-contained portable electronic device with video and recording as its primary function. It is typically equipped with an articulating screen mounted on the left side, a belt to facilitate holding on the right side, hot-swappable battery facing towards the user, hot-swappable recording media, and an internally contained quiet optical zoom lens.

Betacam is a family of half-inch professional videocassette products developed by Sony in 1982. In colloquial use, "Betacam" singly is often used to refer to a Betacam camcorder, a Betacam tape, a Betacam video recorder or the format itself.

<span class="mw-page-title-main">Video tape recorder</span> Tape recorder designed to record and play back video and audio material on magnetic tape

A video tape recorder (VTR) is a tape recorder designed to record and playback video and audio material from magnetic tape. The early VTRs were open-reel devices that record on individual reels of 2-inch-wide (5.08 cm) tape. They were used in television studios, serving as a replacement for motion picture film stock and making recording for television applications cheaper and quicker. Beginning in 1963, videotape machines made instant replay during televised sporting events possible. Improved formats, in which the tape was contained inside a videocassette, were introduced around 1969; the machines which play them are called videocassette recorders.

<span class="mw-page-title-main">Videotape format war</span> Period of competition

The videotape format war was a period of competition or "format war" of incompatible models of consumer-level analog video videocassette and video cassette recorders (VCR) in the late 1970s and the 1980s, mainly involving the Betamax and Video Home System (VHS) formats. VHS ultimately emerged as the preeminent format.

<span class="mw-page-title-main">8 mm video format</span> Magnetic tape-based videocassette format for camcorders

The 8mm video format refers informally to three related videocassette formats. These are the original Video8 format and its improved successor Hi8, as well as a more recent digital recording format known as Digital8. Their user base consisted mainly of amateur camcorder users, although they also saw important use in the professional television production field.

<span class="mw-page-title-main">VHS-C</span> Magnetic tape-based format

VHS-C is the compact VHS videocassette format, introduced by Victor Company of Japan (JVC) in 1982, and used primarily for consumer-grade compact analog recording camcorders. The format is based on the same video tape as is used in VHS, and can be played back in a standard VHS VCR with an adapter. Though quite inexpensive, the format is largely obsolete even as a consumer standard and has been replaced in the marketplace by digital video formats, which have smaller form factors.

<span class="mw-page-title-main">U-matic</span> Videocassette format; the first of its kind

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. It was among the first video formats to contain the videotape inside a cassette, as opposed to the various reel-to-reel or open-reel formats of the time. The videotape is 34 in (19 mm) wide, so the format is often known as "three-quarter-inch" or simply "three-quarter", compared to open reel videotape formats in use, such as 1 in (25 mm) type C videotape and 2 in (51 mm) quadruplex videotape.

MII is a professional analog recording videocassette format developed by Panasonic in 1986 in competition with Sony's Betacam SP format. It was technically similar to Betacam SP, using metal-formulated tape loaded in the cassette, and utilizing component video recording.

VX was a consumer analog recording videocassette format developed by Matsushita launched in 1975 in Japan which was short-lived and unsuccessful. In the United States, it was sold using the Quasar brand and marketed under the name "The Great Time Machine" to exhibit its time-shifting capabilities, since VX machines had a companion electro-mechanical clock timer for timed recording of television programs. In Japan, the VX-100 model was launched in 1975, with the VX-2000 following in 1976. The first and only model sold in North America was the Quasar VR-1000, with the VT-100 timer.

V-Cord is an analog recording videocassette format developed and released by Sanyo. V-Cord was released in 1974, and could record 60 minutes on a cassette. V-Cord II, released in 1976, could record 120 minutes on a V-Cord II cassette.

<span class="mw-page-title-main">Videocassette recorder</span> Device designed to record and playback content stored on videocassettes, most commonly VHS

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. Use of a VCR to record a television program to play back at a more convenient time is commonly referred to as timeshifting. VCRs can also play back prerecorded tapes. In the 1980s and 1990s, prerecorded videotapes were widely available for purchase and rental, and blank tapes were sold to make recordings.

<span class="mw-page-title-main">JVC HR-3300</span>

The JVC HR-3300 VIDSTAR is the world's first VHS-based VCR to be released to the market, introduced by the president of JVC at the Okura Hotel on September 9, 1976. Sales started in Japan under the name Victor HR-3300 on 31 October 1976. Foreign sales followed in 1977 with the HR-3300U in the United States, and HR-3300EK in the United Kingdom.

References

  1. Panasonic AU 300 B Decoder Circuit ( SL 1)" service manual
  2. "Ampex Recorder" (PDF). tvcameramuseum.org. Retrieved 3 July 2023.
  3. "The HR-1 Recorder" (PDF). tvcameramuseum.org. Retrieved 3 July 2023.
  4. "VideOlson Videotape Formats".
  5. "Obituary". SMPTE Journal. 94 (11): 1210–1213. November 28, 1985. doi:10.5594/J03353 via IEEE Xplore.
  6. Panasonic AU-100A Operating Instructions & Service Manual

Sources