What is upscaling

[nowonder]

This must seem a daft question , but what exactly is an upscaling DVD player? I've been getting a new telly (Sony 40w2000, a belter it is too), and was wondering if they are worth looking into. Thanks .

[Badger0-0]

A standard DVD runs at 576 lines, an upscaler will stick in a bit of guesswork and turn it into 720 or 1080. Assuming your tele is 768 lines, it will take the scaling player's output and change it to 768.
The result depends on the player and telly.
Although most people see an improvement.

[bob scone]

i just hooked up mine thru the hdmi lead today...... it was better, especially noticable viewing photos but i aint sure its £90 better than my old dvd player thru rgb scart.