By K. F. Ibrahim
This publication offers a whole and finished assurance of video and tv expertise together with the newest advancements in reveal apparatus, HDTV and DVD. beginning with television basics, the majority of the publication covers the numerous new applied sciences which are bringing development to the television and video marketplace, similar to plasma and liquid crystal display, DLP (digital mild processing), DVD, Blu ray expertise, electronic tv, excessive Definition tv (HDTV) and video projection platforms. for every expertise, a whole rationalization is supplied of its operation and useful software, supported by means of over three hundred diagrams together with schematic diagrams of commercially to be had buyer gear. the place correct, checking out and fault discovering strategies are defined including standard fault indicators supported via photos. the recent version has a few beneficial appendices on microcomputer/microcontroller structures, attempt tools, serial buses (I2C and RS 232), teletext and mistake correction recommendations. The e-book is meant for college kids of electronics and training engineers. specifically, it is going to valuable for college kids on vocational classes and repair engineers in addition to fanatics. *The definitive consultant to the hot applied sciences reworking the area of tv: HDTV, electronic television, DVD recorders, hard drive recorders, wide-screen CRT, flat display technologies...*A useful strategy, together with troubleshooting and servicing information*Covers united kingdom, eu and North American structures
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Extra info for Newnes Guide to Television and Video Technology, Fourth Edition
The phasor length represents saturation; the phasor direction or angle represents hue. Hue denotes the principal primary component of a colour. For instance, the primary colour for pink is red; hence its phasor is in phase with the pure red phasor WR. A less saturated red would, say yellowish red; its phasor would be shifted towards WY or towards WM. Yellow itself has two primary colours and hence its phasor falls between red and green. Similarly for magenta. In this case, WM falls between red and blue.
The next step is to produce the pure chrominance component from the RGB signal. To do this, the luminance had to be removed from the three primary colours, resulting in what is known as colour difference signals: R Ϫ Y, G Ϫ Y and B Ϫ Y. Since the luminance signal Y ϭ R ϩG ϩB, and luminance Y is to be transmitted in full, only two colour difference signals need to be transmitted. Of the three colour difference signals, Y ϪG normally has the smallest value. For this reason, difference signals (R Ϫ Y) and (B Ϫ Y) are selected.
Colour ‘temperature’ provides a means to define white and other colours. Colour temperature is defined as the temperature in Kelvin to which a ‘black’ radiating body has to be raised to emit a certain light such as white light. For instance, the reddish light of a candle has a colour temperature of 1200 K, white light has a temperature around 5500 K and the blue colour of a hazy sky has a temperature of 8000 K. It will be noticed that a red light has lower colour temperature than a blue light. For TV applications white light at 6500 K, which is ‘standard daylight’ referred to as illuminant D6500, has been adopted as a standard.
Newnes Guide to Television and Video Technology, Fourth Edition by K. F. Ibrahim