1. Ali Sharaf Al Musawi

2. Objectives At the end of this lesson you will be able to: Explain the historical basis/stages of video technology and its educational application.

3. Video Recording System In the early days, film was the only medium available for recording television programs.

4. Video Recording System In the 1920s, American engineer, Philo Taylor Farnsworth devised the television camera, an image dissector, which converted the image captured into an electrical signal.

5. Video Recording System Thoughts 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.

6. Video Recording System: 1950s Bing 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.

7. Video Recording System: 1950s Ampex 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.

8. Videotaped on TV On November 30, 1956: the first videotaped material on a TV show airs. It is "Douglas Edwards and the News" on CBS.

9. Video Developments: 1950s Price 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.

10. Video Developments: 1960s Phillips company of the Netherlands introduces the Compact Cassette, a portable tape recorder using a small cartridge.

11. Video Developments: 1970s Sony 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.

12. Video Developments: 1970s Panasonic 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.

13. Video Developments: 1980s Sony introduces the first digital recorders. These were professional, open reel recorders for the studio.

14. Video Developments: 1980s The 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.

15. Video Developments: 1990s 3D-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.

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

17. Implications to Education Instructional Radio Instructional Audiotapes Telephone Conferencing Instructional Videotape