Ampex

From Free net encyclopedia

AMPEX is an acronym, created by its founder, Alexander M. Poniatoff. It actually stands for (A)lexander (M). (P)oniatoff (Ex)cellence. Poniatoff's company was established in San Carlos, California in 1944 as the Ampex Electric and Manufacturing Company.

In 1948, ABC used an Ampex Model 200 audio recorder for the first-ever U.S. tape delay radio broadcast of The Bing Crosby Show.

In 1950, Ampex introduced the first "dedicated" instrumentation recorder, Model 500, built for the U.S. Navy.

Ampex became a leader in magnetic sound and video recording technology. Ampex was not a recording format, but a company that developed the Quadruplex format that dominated the broadcast industry for decades. The format was licensed to RCA for use in their "television tape recorders." Ampex's invention revolutionized the television industry by eliminating the kinescope process of archiving television programs on motion picture film (at least in the U.S.; in Britain, the BBC and most of the ITV companies continued to use kinescoping alongside videotape until the late 1960s; in most developing countries, many television broadcasters continued to use kinescoping alongside videotape until the mid-1970s). The Ampex broadcast video tape recorder also facilitated time-zone broadcast delay so that networks could air programming at the same hour in various time zones.

One of the key engineers in the development of the Quadruplex video recorder for Ampex was Ray Dolby, who worked under Charlie Ginsburg and went on to form Dolby Laboratories, a pioneer in audio noise reduction systems.

The first magnetically-recorded time-delayed network television program using the new Ampex Quadruplex recording system was CBS's "Douglas Edwards and the News" on November 30, 1956.

Since the early 1950s, Bing Crosby and others tried to record video on very fast-moving magnetic tape. One semi-successful attempt was the BBC's VERA.

Ampex pursued recording methods in which recording heads were rotated at high speed and the tape movement was kept slow. The "Quad" head assembly has 4 heads that rotate at 14,400 rpm. They write the video vertically across the width of a tape that is 2 inches (5 cm) wide and runs at 15" (38cm) per second. This allows programs of one hour to be recorded on one reel of tape. (In 1956, one reel of tape cost $300, equivalent to $2000 in 2000 and the recorders cost about $75-100,000, about a half a million dollars today). Today, a majority of the early videotaped content still existing are network programs, since the typical television station could not afford an Ampex VTR. Ampex had trademarked the name "Video Tape", so competitor RCA called the medium "TV Tape" or "Television Tape". The terms eventually became genericized, and "videotape" is commonly used today.

In 1967, ABC used the Ampex HS-100 disk recorder for playback of slow-motion downhill skiing on World Series of Skiing in Vail, Colorado. This was the first use of slow motion instant replay in sporting events. Later that year, Ampex introduced the Ampex VR-3000 portable broadcast video recorder, which revolutionized the recording of high-quality television in the field without the need for long cables and large support vehicles. Broadcast quality images could now be shot anywhere, including from airplanes, helicopters and boats.

In 1970, Ampex introduced the ACR-25, the first automated robotic library system for the recording and playback of television commercials. Each commercial was recorded on an individual cartridge. These cartridges were then loaded into large rotating carousels. Using sophisticated mechanics and compressed air, the "carts" were loaded into and extracted from the machine at extremely high speed. This allowed TV stations to re-sequence commercial breaks at a moments notice, adding, deleting and rearranging commercials at will. The TV newsroom also began to use the ACR-25 to run news stories because of its random access capability.

The Ampex video system is now obsolete. Those machines which still survive have been pressed into service to transfer recordings onto modern digital video formats.

Notably, however, the Nixon-Khrushchev Kitchen Debate was recorded on Ampex tape.

Ampex Corporation is the parent company of Ampex Data Systems which manufactures digital archiving systems, principally for the broadcast industry.

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