Front porch

(communications) Portion of a composite picture signal which lies between the leading edge of the horizontal blanking pulse and the leading edge of the corresponding synchronizing pulse.

Type: Private
On the web: http://www.frontporch.com

Front Porch knows that providing Internet service is hard work, with little time to kick up your feet. The company, founded in 1998, provides advertising and content delivery systems for Internet services providers, annually serving millions of users in more than 30 countries. It offers products and services that ISPs use to insert and manage content and advertising into their offerings. ISPs use the company's products to redirect traffic and serve a variety of ads, including interstitials, pop-ups, and pop-under advertising. Front Porch also offers services for managing online advertising, customer service messaging, bill collection, and network reporting.

Officers:
President and CEO: Zachary (Zach) Britton
CFO: Bob Hohne
CTO: Derek Maxson

Competitors:
24/7 Real Media
Google
ValueClick

The noun has one meaning:

Meaning #1: a porch for the front door

Portion of a PAL videosignal. From left to right: end of a video scan line, front porch, horizontal sync pulse, back porch with color burst, and beginning of next line

In television broadcasting, the front porch is a brief (about 1.5 microsecond) period inserted between the end of each transmitted line of picture and the leading edge of the next line sync pulse. Its purpose was to allow voltage levels to stabilise in older televisions, preventing interference between picture lines. The front porch is the first component of the horizontal blanking interval which also contains the horizontal sync pulse and the back porch.^[1]

References

1. ^ Gupta, R. G. (2006). Television Engineering and Video Systems. Tata McGraw-Hill. pp. 62. ISBN 0070585962, 9780070585966. http://books.google.com/books?id=P6BlcWaizHUC. Retrieved 2009-05-17. 

See also

• Back porch
• Vertical blanking interval
• Porch (as in buildings)

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