Lecture 11: Development of Television

Lecture 11: Development of Television - Lecture 11: Radio &...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Decline of Network Radio and Rise of Television Development of TV 0. Television was actually “invented” by Nipkow in the 1880s. 1. Demonstrated as early as 1900, (at the Paris World's Fair). 2. Its history is mainly the story of perfecting, rather than inventing. 3. Chief problems were in the decision to use mechanical systems or electronic systems. Mechanical systems were given the most work early on 4. electronic systems were shown to produce highest quality. The first mechanical TV systems were developed by John Logie Baird in England and by Charles Jenkins in the U.S. in the mid 20s. Mechanical Systems – A side-track for TV 0. John Logie Baird (Britain) 1. Charles Jenkins (U.S.) 2. These early tv images used 25 or 30 scan lines 3. Regular analog television contains about 480 active scanning lines resulting in a picture resolution of about 330 lines of resolution. 4. VHS VCR's have about 240 lines of resolution which is why VHS recordings don't look as sharp as the original picture. 5. DVDs offer higher resolution typically on the order of 400-480 lines of resolution. 6. HDTV offers resolution that is at least twice that of analog television. Very sharp images from HDTV – main formats are 720 and 1080 Two major names in the electronic system: 0. 0. Vladimir Zworykin - had basic design by 1919 -Couldn't find anyone interested. 1.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/18/2008 for the course COMM 101 taught by Professor Mcdonald during the Fall '07 term at Ohio State.

Page1 / 5

Lecture 11: Development of Television - Lecture 11: Radio &...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online