Download e-book for kindle: A Technical Introduction to Digital Video by Charles A. Poynton

By Charles A. Poynton

ISBN-10: 047112253X

ISBN-13: 9780471122531

Now not a programming or a recipe publication, this can be a whole reference that offers the basic options and tactics improvement of electronic video tasks. This booklet is designed for technical humans now not already video specialists who have to layout, construct and program--hardware and software--systems that come with video.

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13 Rec. 45. 13. 45 is a good match for both CRTs and for perception. 2. Emerging display devices such as liquid crystal displays (LCDs) have nonlinearity different from that of a CRT. 6 Rec. 709 transfer function. 0 Light intensity, relative well matched to perception. 45 value are very well established. The economic importance of equipment that is already built to these standards will deter any attempt to establish new standards just because they are better matched to particular devices. We can expect new display devices to incorporate local correction, to adapt between their intrinsic transfer functions and the transfer function that has been standardized for image interchange.

The United States has adopted standards for ATV based on 1920×1080 and 1280×720 image formats. MPEG-2 compression can compress this to about 20 megabits per second, a rate suitable for transmission through a 6 MHz terrestrial VHF/UHF channel. The compression and digital transmission technology developed for ATV has been adapted for digital transmission of conventional television; this is known as standard-definition television (SDTV). MPEG-2 compression and digital transmission allow a broadcaster to place about four digital channels in the bandwidth occupied by a single analog NTSC signal.

Standards conversion between scanning systems having different frame rates, even done poorly, requires a fieldstore or framestore. 94 scanning and 625/50 scanning is the reason that it is difficult for consumers – and broadcasters – to convert European material for use in North America or Japan, or vice versa. Transcoding refers to changing the color encoding of a signal, without altering its scanning system. Sync structure At a video interface, synchronization (sync) is achieved by associating, with every scan line, a line sync datum denoted 0H (pronounced zero-H).

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