BUG's life

bugsage this name has been appearing on the internet since 1997. It was the e-mail account that I used first ever on the internet. It is not a word. It's a combination of words. So that I can easily open an account name everywhere on the internet without being conflict with other username. This is my second Blog on the internet. Hope to enjoy much here.

Thursday, November 17, 2005

what is HDTV?

HDTV(High Definition Television) 是最近新興的電視機顯示制式. 有別於傳統的彩色電視機.
傳統電視視機的顯示方法是橫向480行, 以1,3,5行和2,4,6行交替地顯示的方法把畫面顯示出來. 即是說, 在一瞬間的時間, 電視屏幕只會有1,3,5 行 或者是2,4,6行的一半畫面在顯示著.

HDTV則不同, 以720行並行顯示的方式, 把影像同一時間地顯示出來. 所以畫面質素比傳統電視機的顯像更加好.

傳輸HDTV的訊號並不能以傳統的線路傳送. 以香港目前的供應商, 暫時也沒有提供這項服務. 外國也是在起步階段. 所以短期內, 只有硬件的提供, 未能有軟件的配套.

參考網址:
HDTV.net - what is HDTV?

posted by bug @ 10:21 PM

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