Broadcasting and cable executives are suddenly talking about another gadget that is likely to have a profound effect on the business: a device that is able to "squeeze" two television signals into one channel.
General Electric unveiled these electronic components last month that are part of a "bandwidth compression system"--meaning they will double the channel capacity of a cable system.
GE accomplishes this technical feat by electronically dissassembling the 525 lines that make up a television picture. Every other line is eliminated and replaced by a corresponding portion of a second picture. The resulting composite is then transmitted as a single TV signal.
After the signal is received in the home, the two images are electronically separated.
Friday, February 02, 2007
Like Compressing Apples and Oranges
You're so accustomed to talking about HDTV, but did you stop to think about some of the early work? Here's a snippet from Ron Wolf's article (29 Dec 1982; The Miami Herald):