High-Definition Television and Compatibility with Existing Standards

Author(s): C. P. Sandbank ; M. E. B. Moffat
Publisher: Society of Motion Picture and Television Engineers
Publication Date: 1 February 1982
Conference Location: Nashville, TN, USA
Conference Date: 5 February 1982
Page(s): 170 - 185
ISBN (Paper): 978-1-61482-912-6
DOI: 10.5594/M00636



The current interest in High Definition Television (HDTV) is perhaps somewhat surprising since during the last 20 years there have been no significant changes in display technology which herald the availability of consumer products giving a large area hiqh-resolution bright display, and which are capable of doing justice to a picture scanned with more than 625 lines. However, the interest in new TV standards must be seen in the light of the fact that, displays apart, durinq this same 20 years there have been fundamental changes in most other aspects of television technology. Solid state devices have led to the introduction of digital techniques in the studio as well as for recording and distribution. The use of satellites and optical fibre cable have both been established as a means of transmitting video directly to the home viewer. New technology for storing video on tape or disc has appeared in the consumer area.