Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. VCR Plus+,
G-Code, VideoPlus+ and ShowView are different names for essentially the
same system for programming video recorders. These names are all
registered trademarks of Macrovision, whose corporate predecessor,
Gemstar, developed these algorithms for use in integrated endecs. Before
the advent of on-screen displays, the only interface available for
programming a home video recorder was a small LED or LCD panel and a
small number of buttons. Correctly recording a specific program was
therefore a somewhat complex operation for many people; scores of jokes
have referred over the years to the need to "have a 12-year-old" or
someone technically adept to successfully program a home video recorder
or to avoid having a perpetual blinking "12:00" on the recorder's
display. G-Code, VideoPlus+ and ShowView were introduced to remove this
difficulty.
