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Mixed ability target audience with lots of waffle and padding,
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This review is from: How Video Works: From Analog to High Definition (Paperback)If you know what it means that "a signal is 90 degrees out" but don't know what binary is and that computers use binary then this book is for you.
This book, like many others, are written by multiple authors and in this case it's really obvious. Within one chapter, you find paragraphs that assumes a great deal of radio frequency understanding but then patronises you with simple information. Furthermore, it seems to be a collection of notes made during the course of a TV engineers career. The illustrations are poor and seem more to bulk the book out.
The book begins by introducing early analogue black and white television which is does reasonably well except that it sketches over some important fundamentals, such as FM and AM modulations including carrier signals which are key to analogue transmission. Colour TV explanation is again tricky with some overly complicated explanation of vectors.
Soon, however, the book starts taking a strange turn when in the Analogue Waveform Monitors chapter it starts to give specific details on the use of a particular piece of broadcast TV equipment. Later in the book a whole chapter is dedicated to the same thing, as if we had the exact same piece of kit - "If the SWEEP button is pressed..."
A few chapters later and the authors seem to be running out of steam, so attempts to explain Digital Theory using some bizarre and downright confusing analogy:
"Early computers functioned using a series of switches that were either on or off, providing either a yes or no option. This could be likened to a questionnaire created to find out someone's name where only yes and no answers can be given, each answer represented by 0 or 1, respectively. To give a person's name, a letter from the alphabet would be offered and the person would say yes or no to indicate whether that letter is the next letter in his or her name."
Later in the same chapter it then explains that megahertz are used as the unit of measurement for "how quickly these questions are answered".
After this chapter I became very suspicious of the information presented especially as later subjects that encroach on my area of expertise were very poorly written and sometimes incorrect.
While colour and b/w pictures of Betacam VTRs are interesting to those who don't work in broadcast I can't help wondering what the purpose is for.