Operation Manual

Teletext A television information retrieval service developed in the

United Kingdom in the early 1970s. It offers a range of

text-based information, typically including national,

international and sporting news, weather and TV

schedules. Subtitle (or closed captioning) information is

also transmitted in the teletext signal, typically on page

888 or 777.

YPbPr A color space used in video electronics, in particular in

reference to component video cables. YPbPr is the analog

version of the YCBCR color space; the two are

numerically equivalent, but YPBPR is designed for use in

analog systems whereas YCBCR is intended for digital

video. YPbPr is commonly called "component video", but

this is a misnomer, as there are many other types of

component video (mostly RGB with sync either on green

or one or two separate signals).

YPbPr is converted from the RGB video signal, which is

split into three components, Y, PB, and PR.

* Y carries luma (brightness) and sync information.

* PB carries the difference between blue and luma (B - Y).

* PR carries the difference between red and luma (R - Y).

Sending a green signal would be redundant, as it can be

derived using the blue, red and luma information.