Television

TELEVISION PRINCIPLES AND PRACTICE by Zarach and Morris 1979. ISBN 0-333-19221-4
Although old, the principles of TV have not changed since it was invented. A good introduction to how they work. Nowadays many TV functions have disappeared into ICs, but you'll still need to know what the ICs are doing. It does not cover more recent developments like teletext, but you can always read BROADCAST DATA SYSTEMS for that. In practice TV tunerheads have evolved to the point where the UHF enters one end and baseband video and sound emerge. See the Philips website for the latest products. Some even have an AM/FM radio in there as well, for multimedia PC applications. Tuning is almost always done by a digitally programmable phase lock loop chip, via the I²C bus.