| MARC21-007: Videorecording format |
VHS (1/2 in., videocassette) |
VHS (1/2 in., videocassette) |
preferred label |
en |
| MARC21-007: Videorecording format |
VHS (1/2 in., videocassette) |
Used for the home video system introduced in 1977 by Japan Victor Corporation (JVC) for home videorecording and playback on 1/2 inch videotape. It is distinguished by the size of the cassette, its M-load tape threading, and technical capabilities. VHS stands for "Video Home System." |
definition |
en |
| MARC21-007: Videorecording format |
VHS (1/2 in., videocassette) |
b |
notation |
en |
| MARC21-007: Videorecording format |
U-matic (3/4 in., videocassette) |
U-matic (3/4 in., videocassette) |
preferred label |
en |
| MARC21-007: Videorecording format |
U-matic (3/4 in., videocassette) |
Used for a video format using Sony's trademark name which refers to its tape threading path in a U-shape. It is the worldwide standard for 3/4 inch videotape and is used extensively in industrial and broadcast production. Like the two 1/2 in. home video formats, it uses a helical scan recording system. It is also known as U type standard. |
definition |
en |
| MARC21-007: Videorecording format |
U-matic (3/4 in., videocassette) |
c |
notation |
en |
| MARC21-007: Videorecording format |
EIAJ (1/2 in. reel) |
EIAJ (1/2 in. reel) |
preferred label |
en |
| MARC21-007: Videorecording format |
EIAJ (1/2 in. reel) |
Used for the standard 1/2 inch reel-to-reel helical scan videotape system named for the Electronics Industries Association of Japan which set the standards for 1/2 in. video tape recorders manufactured since 1969. Referred to as "the old trailblazer." |
definition |
en |
| MARC21-007: Videorecording format |
EIAJ (1/2 in. reel) |
d |
notation |
en |
| MARC21-007: Videorecording format |
Type C (1 in., reel) |
Type C (1 in., reel) |
preferred label |
en |
| MARC21-007: Videorecording format |
Type C (1 in., reel) |
Used for the 1 inch videotape recording system utilizing one video head and tape runs at 9.61 inches per second. Type B system uses 2 heads and runs at 9.65 ips; Type A is an obsolete early system. Type B is still used in the U.S. and overseas (as of 1982), but Type C is the 1 inch format most widely employed as the broadcasting standard in the U.S. and overseas. Type C equipment and technology are made by Sony, RCA, and others. |
definition |
en |
| MARC21-007: Videorecording format |
Type C (1 in., reel) |
e |
notation |
en |
| MARC21-007: Videorecording format |
Quadruplex (1 in. or 2 in., reel) |
Quadruplex (1 in. or 2 in., reel) |
preferred label |
en |
| MARC21-007: Videorecording format |
Quadruplex (1 in. or 2 in., reel) |
As opposed to the helical scan system, which uses one head, the Quadruplex videorecording system uses four videorecording heads. Often referred to as Quad, it was developed by Ampex in the mid-1950's. It provided higher quality resolution and color than did helical scanning. |
definition |
en |
| MARC21-007: Videorecording format |
Quadruplex (1 in. or 2 in., reel) |
f |
notation |
en |
| MARC21-007: Videorecording format |
Quadruplex (1 in. or 2 in., reel) |
Quadruplex was the broadcast standard until recently, when less expensive helical scan systems have begun to overtake it. |
scope note |
en |
| MARC21-007: Videorecording format |
laserdisc |
laserdisc |
preferred label |
en |
| MARC21-007: Videorecording format |
laserdisc |
Laser optical (reflective) videorecording system that uses an analog technique called PWM (Pulse Width Modulation) to represent video information on a grooveless, smooth, round plastic disc. The disc is read (played back) by a weak laser beam that registers data appearing on the disc as tiny pits or depressions of varying lengths. |
definition |
en |
| MARC21-007: Videorecording format |
laserdisc |
g |
notation |
en |
| MARC21-007: Videorecording format |
laserdisc |
Laserdiscs exist in three standard commercially produced sizes: 12, 8, and 4 3/4 inch. The 12 inch disc is the most common size and is typically used for movies; the disc or its packaging usually bears an LD trademark (the phrase "LASER DISC" or "Laser Vision" usually appears as the lower part of that LD trademark); alternatively, LASER VIDEODISC, DiscoVision, LaserDisc, LaserVision, or a similar phrase may appear instead of the LD trademark. The 8 and 4 3/4 inch discs are uncommon and typically used for music videos or other short video programs; the disc or its packaging usually bears one of these terms or trademarks: CDV (CD VIDEO), VSD (VIDEO SINGLE DISC), or LD (LASER DISC). This system started commercial use in 1978, but production declined rapidly after 1998 due to the success of the DVD format. |
scope note |
en |
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