540p is obtained by putting the same data into both fields of an interlaced 1080. It's kinda fake progressive at the cost of half your res. Old video games put 240p on an SDTV. I'm pretty sure Tosh only lets you set the output format for SDTV upconverts, not for HDTV signals... that suggests you may not be connected correctly... you need DVI, HDMI, or HD Component to carry an HD signal, old style SVideo etc can only carry SDTV. You should configure the DVR for 1080i output, your native res.
The extra quality with 4:3 upconverts from a digital station is because of their digital carriage - no ghosts or static or color crosstalk.
|