Someone told me the PS2 could do HD

[PATRIOT7ME]

ruimartiniman said:

PATRIOT7ME said:

leo-j said:
1080i is not technically HD, and 480p is not HD

How is it not ?explain

1080 i is hd.

hd is 720p, 1080 i, 1080 p

full hd - 1080 p

progressive scan  - 480 p, 576 p 

so gt4 is hd. Didn´t know GT4 was 1080 i.

I see So the PS2 could 1080i which is HD but why didn't it do 720p, and 1080p