數位電視分dvb-s. dvb-t.dvb-c.
這三種的hdtv大陸都有
加上hd 的dvd.大陸都有.甚至有dab(數位音響廣播)

加上2008奧運很多hdtv傳輸設備都加緊趕工

要注意大陸是pal規格.電視盒 or 卡 tuner 要支援pal

你可問當地友人

或上my av -htpc討論區
or www.tvro.com.tw問問看

上海的hdtv訊源應該有好幾種.你再問問看吧

在大陸印象DVB-S是違法的,但很多人在用尤其是上海,但使用上還是多小心被發現會被沒收+罰款
一線城市DVB-T的台數非常少,上海之前只有一台,大多是公交車在播放
DVB-C應該是提供部份小區在用的不是很普及
台灣與大陸的訊號不能共通,尤其是類比的產品,所以必須要特別注意
台灣-NTSC,大陸-PAL DK/I,台灣只有非常少數的產品能共用於大陸,所以購買前務必確認清楚

建議先買個USB類比的頂著用,如果DVB-T(可能是2008)較普及時再買A+D的產品,現在不需要浪費銀子

http://www.dvb.org/about_dvb/dvb_worldwide/china/
Digital TV standard to be unveiled soon, but what about Mobile TV
China will soon announce its new digital television standard and has warned that all Chinese television networks must use it if they wish to continue broadcasting, according to an article on the DTG website.
The State Administration for Radio, Film and Television (SARFT) announced that the Chinese developed standard would soon be unveiled.
It will then be promoted for a year before being made compulsory for use by all broadcasters.
The standard is reported to cover digital terrestrial, satellite and cable TV as well as mobile television services when it launches in the next few months.
However the situation on mobile TV may not be as clear as it seems. Recent press announcements seem to agree that China has just released two new contenders for the mobile TV standard.
The competitors are Terrestrial-Mobile Multimedia Broadcasting (T-MMB), a derivative of South Korea's Terrestrial-Digital Multimedia Broadcasting and STiMi, short for satellite and terrestrial interaction multimedia.
The DVB-H standard for mobile TV and South Korea's T-DMB standards are already on trial and the new Chinese standards will also be trialed throughout 2006. The chosen standard will then move into commercial trials during 2007 so that it is ready for the Olympics in 2008.
Sources: Various plus DTG News
Item added: 29th August 2006


DTTB development and deployment
China is progressing with the development of its own system for Digital Terrestrial Television Broadcasting (DTTB), although some DVB-T services continue to be used in several cities across China.

There are three domestic competitors vying for the standard choice in China:
Tsinghua University (DMB-T),
Shanghai Jiao Tong University (ADBT-T) and the
Academy of Broadcasting Science (ABS).

At the present time Digital Cable systems are the main focus with DTTB development being a lower priority.

DVB-C deployment
Chinese industry and the Administration has concentrated on the deployment of DVB-C services in recent years with a view to meeting the target of 30 million DVB-C subscribers at the end of 2005.

The business model proposed by SARFT focuses on free set-top-boxes being distributed by the cable operators.
Individual operators would prefer lower cost alternatives

現在台灣的數位電視盒,都稱說可以支援1920x1080的解析度,可是台灣的數位電視好像只有720*480....如果我買去大陸上海使用.是否就能收看到更大寬高比的數位電視???(至少比台灣的訊號更足夠與清晰) 我這樣的觀念是正確的嗎?? 還有,我澳買哪廠牌哪一型的,可以推薦一下嗎???

建議你先蒐集上海當地的hdtv數位電視資訊.那些要收費.那些不用
還有依據你的收視習慣.(想看衛星電視?想看dvb-t?想看有線電視?)
再來決定你要購買產品,免的買了後悔

目前小弟知
大陸中央電視台有hdtv節目.(用衛星接收機)
上海可收dvb-t（不保證有hdtv.)
還聽說dab(可有影像.和傳統dab只聽音樂不一樣),也是移動式接收
有線電視大陸方面我就較不知

若硬要我推薦品牌

我推麗台和雙漢數位電視系列.軟體相容不錯

但你還是要自己多蒐集資訊.要買支援pal收訊的產品

數位電視解析度有sdtv.hdtv
台灣數位電視dvb-t目前只是sdtv ntsc 720*480

如果你在上海有收hdtv的機會當然以收hdtv優先(1280*720 or 1920*1080)

就算用筆記型電腦也應能感受畫質提昇

如果用lcdtv看更明顯

據我所知, HDTV 要看是用何種壓縮技術, MPEG2 or H.264, 並非標示支援 HDTV 都可以看. 且目前的 notebook 要解 1920*1080 的 HDTV 格式恐怕都會很吃力. 若電視盒 (直接可接電視的) 沒有內建 H.264 硬體解壓縮的話, 那這類的 HDTV 節目, 它一樣無法使用. 總之規格要看清楚.