Ali Sharaf Al Musawi

ObjectivesAt the end of this lesson you will be able to:Explain the historical basis/stages of video

technology and its educational application.

Video Recording SystemIn the early days, film was the only medium

available for recording television programs.

Video Recording SystemIn the 1920s, American engineer, Philo

Taylor Farnsworth devised the television camera, an image dissector, which converted the image captured into an electrical signal.

Video Recording SystemThoughts turned to magnetic tape, which was

already being used for sound, but the greater quantity of information carried by the television signal demanded new studies.

During the 1950s, a number of American companies began investigating the problem.

Video Recording System: 1950sBing Crosby Enterprises, the research team

funded by Crosby and headed by engineer John Mullin, demonstrate a crude video recording system.

Tape Recording Technology - Audio and video magnetic recording has had greater impact on broadcasting than any other single development.

Video Recording System: 1950sAmpex Corporation demonstrates its first

video recorder, the VR1000. The machine, which recorded only

monochrome signals takes the industry by a storm and quickly becomes the standard.

Videotaped on TVOn November 30, 1956: the first videotaped

material on a TV show airs. It is "Douglas Edwards and the News" on CBS.

Video Developments: 1950sPrice of first commercial blank video tape

offered by the 3M Corp. listed as $307 per reel.

RCA introduces stereo tape, in a cartridge format requiring a special player.

The system flops almost immediately, though its production continues by a licensee, Bell Sound, until 1964.

Video Developments: 1960sPhillips company of the Netherlands

introduces the Compact Cassette, a portable tape recorder using a small cartridge.

Video Developments: 1970sSony introduces the U-Matic videotape

recorder. The format does not succeed well as a

consumer product, but achieves great success in schools and television stations.

Sony introduces the Betamax home video system. By using a convenient cartridge and offering the product at a low cost, Beta quickly takes off.

 

Video Developments: 1970sPanasonic and JVC introduce a competitor to

Betamax, the Video Home System (VHS) system.VHS stands for Video Home System. Video tape in a large cassette format introduced

by both JVC and Panasonic around 1976.This has been the most popular format for home

use and video store rentals However, it will be replaced by mini dv tapes

and dvds.

Video Developments: 1980sSony introduces the first digital recorders. These were professional, open reel recorders

for the studio.

Video Developments: 1980sThe still video or digital camera was first

demonstrated in 1981. It used a fast-rotating magnetic disc, two

inches in diameter, recording on it up to 50  images formed in a solid-state device in the camera.

The images were played back through a television receiver or monitor, or printed out.

Video Developments: 1990s3D-video, digital video in three dimensions,

premiered at the end of 20th century. Six or eight cameras with realtime depth

measurement are typically used to capture 3D-video streams.

Video History: Summary Tape Recording Technology - Audio and video

magnetic recording has had greater impact on broadcasting than any other single development.

Implications to EducationInstructional RadioInstructional AudiotapesTelephone ConferencingInstructional Videotape