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2009年9月26日 星期六


2009年9月16日 星期三

Google 甜甜圈Android Donut SDK


Google釋出Android Donut SDK


Android 1.6 Version Notes

Android 1.6 Platform Highlights



Quick Search Box for Android

Camera, Camcorder, and Gallery

VPN, 802.1x

Battery usage indicator





Androud Donut update information

Note 2.0: Android 到底有沒有TTS

2009年9月6日 星期日

什麼是 EVDO ?

EVDO (Evolution-Data Optimized or Evolution-Data)

網路上查詢 EVDO在 英文的定義結果:

EV-DO - Evolution-Data Optimized or Evolution-Data only, abbreviated as EV-DO or EVDO and often EV, is a telecommunications standard for the wireless ...

ev do - A wireless radio broadband data standard adopted by many CDMA mobile-phone service providers in Japan, Korea, Brazil, Israel, the United States, Australia, Canada, New Zealand, Venezuela and Mexico. ...

Part of the CDMA2000 family of standards, it is wireless radio broadband protocol that delivers download data rates of up to 2.4 Mbps. ...

Evolution data maximized (CMDA2000 1x EVDO) is based on CDMA2000. EVDO supports mobile data communications at speeds ranging from 400 Kbps to 2 Mbps.,,sid9_gci1193741,00.html

ev do - evolution-data only. This is the fastest cellphone data technology available in the US and is available only on CDMA networks. ...

3G is designed to provide voice and high-speed mobile data using the cellular approach already proven to work in mobile phone networks. The biggest obstacle to implementing high speed wireless networks is the lack of bandwidth, or range of usable frequencies. Just as only so many radio stations can be squeezed onto the FM dial, only so much data can be transmitted across the available bandwidth. EVDO is an advanced CDMA technology developed by Qualcomm to deal with this limitation.

From Something about Movie

什麼是 CDMA ?

網路上查詢 CDMA的定義結果:

CDMA,英文全寫為Code Division Multiple Access,翻譯作码分多址或分码多工或分码复存,是一種多路複用的無線通訊技術。




碼多分址技術。是近年來在數字通信過程中出現的一種先進的無線擴頻通信技術,它能夠滿足市場對移動通信 ...

碼分多址,是移動通信的一種國際技術標準,屬於第二代(2G)的移動通信技術,起源於美國,盛行於韓國和 ...


什麼是GSM ?

什麼是 GPRS ?

什麼是 MTP ? Media Transfer Protocol

網路上查詢 MTP的定義結果:

出現 :

信息傳遞部分(MTP),在SS7/C7協議組中的協議,傳輸信號信息和執行相關的功能,例如錯誤控制和信令鏈接安全。 ...


實際上要講的是 What is MTP (Media Transfer Protocol) ?

wiki : Media Transfer Protocol

The Media Transfer Protocol is a devised set of custom extensions to the Picture Transfer Protocol (PTP).

Media Transfer Protocol supports the transfer of music files on digital audio players and movie files on portable media players.

from Definition of "Media Transfer Protocol"

The Media Transfer Protocol is a system devised by Microsoft that allows for the synchronization of media files between a personal computer and a device such as a cell phone or MP3 player.


那去google group上發問


Is there any plan to support MTP protocol in Donut or later?

所以G1上應該是有3rd party來做MTP, Google android project open source的部份不支援MTP !

From Something about Movie


update 2011

Android 3.0 開始在Nvdia的平台上開始有支援MTP嚕



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