1080i 同 1080p 差幾多

djaddy

緊係唔同啦
720 講緊係1280x720解像度,而1080係1920x1080
而p即係Progressive scan, 即係全幅掃描,
例如1280x720@50p, 即係1秒有50格1280x720解像度既完整影像

i就係interlaced scan, 交錯式掃描(隔行 ...
willtan 發表於 2009-11-27 19:45

"The number of lines of resolution in Progressive and interlace pictures are not an "apples-to-apples" comparison. In the time it takes 720p to paint 720 lines, 1080i paints only 540 lines. And, by the time 1080i does paint 1080 lines, 720p has painted 1440 lines.

Contrast and brightness have a greater impact on the human visual system than does resolution. The 720p picture is brighter and has greater contrast than the 1080i picture.

In side-by-side subjective testing performed by the Advanced Television Test Center under the auspices of the FCC’s Advisory Committee on Advanced Television Services (ACATS), it was shown that 720p had "no artifacts" under a variety of conditions, while 1080i, under the same conditions, showed "increasing quantization noise and blockiness…" Nevertheless, these distinctions are slight, and the ACATS took pains to note that there was no substantive difference in picture quality between the two formats. "

http://alvyray.com/DigitalTV/Progressive_FAQ.htm

djaddy

但香港既高清廣播好似只係用 1080i
我反而覺得如果雞頂盒set 1080i 會 sharp 一D,
如set 1080p 會柔一D.
所以我都係set返 1080i 算.
XPR 發表於 2009-11-27 20:04

HK's HDTV is 1080i in resolution.

maner394

3# 大玩偶

THANKS, 因為套5.1 +CD PLAYER 計落比原來預算(約10K)貴了10-12K左右, 所以如果可以頂得住, 都係睇多一陣(反正上網賣都不會很值錢), 等過兩年部機壞O左先換. ...
dickyo_occy 發表於 2009-11-27 15:23

我依家都用緊32"，成曰比呢到Ｄ師兄講睇閉路電視 初初都唔覺 越睇越覺 我都準備升級，經多番研究 好老實一句......32"去40"效果唔明顯 起碼 42"或46"先有感覺 去到 50" 先叫震憾 信我 .........電視只會越睇越細

wil-wil

終於有喜訊，唔怪得呢排成日加班 ... 睇中邊部好野?

我依家都用緊32"，成曰比呢到Ｄ師兄講睇閉路電視，初初都唔覺，越睇越覺，我都準備升級，經多番研究，好老實一句......32"去40"效果唔明顯，起碼 42"或46"先有感覺，去到 50" 先叫震憾，信我.........電視只會越睇 ...
maner394 發表於 2009-11-27 22:04

maner394

唔使諗一定係 Plasma  - Panasonic TH-P42或46G10H

peter99

我依家都用緊32"，成曰比呢到Ｄ師兄講睇閉路電視 初初都唔覺 越睇越覺 我都準備升級，經多番研究 好老實一句......32"去40"效果唔明顯 起碼 42"或46"先有感覺{:6_193 ...
maner394 發表於 2009-11-27 22:04

重要睇下府上睇電視有幾多距離添喎，一過十呎，無55以上都........

wil-wil

50"/60" 震憾好 ...

唔使諗一定係 Plasma  - Panasonic TH-P42或46G10H
maner394 發表於 2009-11-27 22:11

micma

唔使諗一定係 Plasma  - Panasonic TH-P42或46G10H
maner394 發表於 2009-11-27 22:11

46 真係好抵買...$13xxx = 我買42個價

maner394

50"/60" 震憾好 ...


wil-wil 發表於 2009-11-27 22:13

46"都可能放唔落...........50"就緊加...........

大玩偶

Maner 兄 ! 買46" 都無問題架 !

得閒經開我呢頭! 上黎我屋企睇睇 !