GoogleAd

News

Loading...

Thursday, November 5, 2009

什麼是 MTC ?

MTC -> Mobile-Terminated Call

一堆MTC的名詞

順手找到一個介紹GSM的網站@@

GSM For Dummies

什麼是 UMTS ?

通用移動通訊系統:Universal Mobile Telecommunications System(UMTS) 一種第三代(3G) 移動電話技術。 ...
zh.wikipedia.org/wiki/UMTS

通用移动通讯系统:Universal Mobile Telecommunications System(UMTS) 一种第三代(3G) 移动电话技术。它使用WCDMA作为底层标准,由 3GPP定型,代表欧洲对ITU IMT-2000 关于3G蜂窝无线系统需求的回应。

UMTS有时也叫3GSM,强调结合了3G技术而且是GSM标准的后续标准。UMTS 封包交換系統是由 GPRS 系統所演進而來,故系統的架構頗為相像。

什麼是 EDGE ?

EDGE是一種基於GSM/GPRS網絡的數據增強型移動通信技術,通常又被人們稱為2.75代技術。
blog.csdn.net/fly_higher/archive/2007/01/04/1474268.aspx

EDGE(通常又稱為:EGPRS)是GPRS的擴展,可以工作在任何已經部署GPRS的網路上。(只要MS和BTS設備做一些必要的升級)

由於GSM/GPRS的強烈競爭對手CDMA2000,到2004年,EDGE主要在北美的運營商那裡部署了部分。大部分運行商把UMTS作為理想的升級途經,計劃完全跳過EDGE或者在UMTS覆蓋不到的區域使用。然而,UMTS高昂的建設費用和緩慢的實施已經使一些西歐的運營商採用EDGE作為過渡階段的升級方案。(典型的運行商3)雖然EDGE不需要改變GSM核心網路的硬體,但是基站必須改進。兼容EDGE的傳輸單元要安裝到基站上,而且基站系統的也要升級到能夠支持EDGE。新的移動終端軟硬體也要能夠編解碼新的移位監控方案。

Wednesday, November 4, 2009

Android Developers Blog: Bring Your Lab Coats

Android Developers Blog: Bring Your Lab Coats

快喔快喔~~~~

Sunday, November 1, 2009

什麼是 OMA DM

網路上查詢 OMA DM在 英文的定義結果:

OMA Device Management is a device management protocol specified by the Open Mobile Alliance (OMA) Device Management (DM) Working Group

wiki: OMA DM

en.wikipedia.org/wiki/OMA-DM

OMA DM specification is designed for management of small mobile devices such as mobile phones, PDAs and palm top computers. The device management is intended to support the following typical uses:

基本上要有以下功能 @@

Provisioning
Configuration of the device (including first time use), enabling and disabling features

Configuration of Device
Allow changes to settings and parameters of the device

Software Upgrades
Provide for new software and/or bug fixes to be loaded on the device, including applications and system software.

Fault Management
Report errors from the device, query about status of device

--

可能的傳送方式 @@

OMA DM is designed to support and utilize any number of data transports such as:

physically over both wireline (USB, RS-232) and wireless media (GSM, CDMA, IrDA or Bluetooth)

(IrDA ?)

transport layers implemented over any of WSP (WAP), HTTP or OBEX or similar transports

(OBEX ?)

--

找到比較專業的文章:

An introduction to OMA Device Management

不過也是 2006年的 @@

要多找些新文章!

Wednesday, October 28, 2009

Android Developers Blog: Announcing Android 2.0 support in the SDK!

Android Developers Blog: Announcing Android 2.0 support in the SDK!

又來升級 @@

Monday, October 26, 2009

UI framework changes in Android 1.6

Android Developers Blog: UI framework changes in Android 1.6

看來要好好研究研究

還有density相關的東西 Orz

Monday, October 12, 2009

density and mutiple device

Support for additional screen resolutions and densities in Android

Supporting Multiple Screens

看來有很多工作要做了 @@

Saturday, September 26, 2009

Mark版稻香

Wednesday, September 16, 2009

Google 甜甜圈Android Donut SDK

新聞連結:

Google釋出Android Donut SDK

請點這裡download

Android 1.6 Version Notes

Android 1.6 Platform Highlights

--

有一些修改:)

Quick Search Box for Android

Camera, Camcorder, and Gallery

VPN, 802.1x

Battery usage indicator

Accessibility

宣傳影片



--

其他文章:

Androud Donut update information

Note 2.0: Android 到底有沒有TTS

Sunday, September 6, 2009

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 ...

en.wikipedia.org/wiki/EV-DO

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. ...

www.goingwimax.com/wimax-glossary/

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

about.telus.com/investors/annualreport2005/en/glossaryBot.html

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

resources.bandwidthmarket.com/corporate/whatis.techtarget.com/definition/0,,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. ...

www.chrsolutions.com/TelecomGlossary.html


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.

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。

zh.wikipedia.org/wiki/CDMA

CDMA經常被廣泛和不嚴格地用來稱呼使用CDMA技術實現的無線網路及其制式,比較常見的是由Qualcomm主要支持和最先投入商用的數位細胞電話制式,包括IS-95(CDG為其申請註冊商標為cdmaOne)和它的演進版本IS-2000(CDMA2000),其他很少這樣使用。由於WCDMA和TD-SCDMA也使用了CDMA技術,這樣的稱呼可能會造出一些混亂。

這裏需要注意:

CDMA(分碼複存/復用技術)理論被應用於WCDMA無線介面。
WCDMA無線介面被應用於國際3G標準UMTS和日本3G標準——FOMA(由日本電信和沃達豐共同開發)。
CDG、TIA和3GPP2等制訂的俗稱為CDMA的系列標準族(包括cdmaOne和CDMA2000)和3GPP的WCDMA標準族無論無線訊號和核心網都不兼容。

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 ...
soft.shouji56.com/article/256.html

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 ...
blog.ednchina.com/kingargos/74699/message.aspx

相關文章:

什麼是GSM ?

什麼是 GPRS ?

什麼是 MTP ?

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。 ...
www.networkdictionary.cn/protocols/m.php

感覺很拗口,因為是機器翻譯的?@@

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.

所以看來是跟微軟有關的

那去google group上發問

看到這個

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 !

Tuesday, August 25, 2009

OMA download and Android

Some DRM playback is in the android PVlayer.

the DRM download including Forward lock and Combined delivery, Only forward lock is supported on android.


OMA download is not a feature of Android 1.0 or cupcake.

partial support could be added by a 3rd-party application by exposing an activity for ACTION_VIEW on the appropriate MIME types.

related post:
http://groups.google.com/group/android-framework/browse_thread/thread/6609e59ff09c1a58

Tuesday, August 11, 2009

如何測試Browser

利用Acid !!!

wiki Acid3

Acid3 is a test page from the Web Standards Project that checks how well a web browser follows certain web standards, especially relating to the Document Object Model and JavaScript.

(Android 1.5 scored: 93/100)

other test url

acid2 test
http://www.webstandards.org/files/acid2/test.html

acid3 test
http://acid3.acidtests.org/

some comments about browser with acid test

http://www.howtocreate.co.uk/acid/

--

其他也許相關測試

SunSpider JavaScript Benchmark
http://www2.webkit.org/perf/sunspider-0.9/sunspider-driver.html

Simple Test for PHP

HTC Hero 與 Social Network

開始有消息了:

[採訪]HTC Hero詳細資費方案公佈 搭中華電信0元起

八月底台灣!

--

裡面有提到:

Stay Close,這個主軸是將SMS、email、Facebook、Twitter整合了,

不知道大家還記不記得先前HTC Touch Diamond 2發佈時,首先內建了People Centric功能,這個功能可以在通訊錄每位朋友的單頁UI上,找到和該聯絡人之間所有通話、簡訊、電子郵件往返紀錄。這就是HTC所謂的Stay Close,

不過這次在Hero裡面整合性更強,除了與該連絡人的電子郵件、簡訊、來電紀錄外,這次又加入了照片,只要將該連絡人資料建立完畢,就會根據該連絡人的電子郵件地址,

完全不用設定情況下,Hero會從Facebook找出可能是該連絡人的帳號,你可以直接加入,該聯絡人的照片資訊就能與該頁面整體同步。除了Facebook外,這個功能也能整合Flickr與Twitter帳號,

---

要來研究一下這三個的api嚕

Facebook
Flickr
Twitter

--

在Android中Contacts 裡面存的table主要是在People裡面

Email放在很奇怪的地方叫做 data

然後要搜尋的key projection也不同 @@

要做到這個功能 要想一下嚕


--

其他相關文章:

HTC推出G3 Hero桑 !

Monday, August 10, 2009

Android 到底有沒有TTS

總之裝了donut

在Setting那邊 有TTS的項目

但是需要安裝voice data @@

要來找一下

Pico TTS

process com.svox.pico

是啥了 @@

Wednesday, August 5, 2009

一堆Gphone的消息

update一下

2009/09/11/Android 手機全列表


話說北美的電信業者對Android phone (Gphone) 也是很熱

除了T-Mobile的G1之外 消息指出

Rumored Android dates for AT&T, Sprint, T-Mobile, and Verizon

分別會有其他產品 :

AT&T
August 3, 2009 – HTC Lancaster

Sprint
October 11, 2009 – HTC Hero

T-Mobile
October 21, 2009 – Motorola Morrison/Cliq

Verizon
October, 2009 – Motorola Sholes

G3 G4 G5 G6 ??

--

相關文章?

2009 年一堆 Android手機!

Motorola 也要推出 Android手機!

--

Extensive List of All Currently Reported Android Phones

Below is the entire list of credible upcoming Android phones I am aware of at this point.

1. Acer A1
2. Dell Ophone mini3i
3. Geek Phone One
4. Haier H7
5. HighScreen PP5420
6. HTC Click – Fiesta
7. HTC Dream – G1
8. HTC Hero – G2 Touch
9. HTC Lancaster
10. HTC Magic – Sapphire – myTouch 3G – Ion
11. Huawei U8230
12. Innocomm Skate
13. Kogan Agora
14. Lenovo O1 Ophone
15. LG GW620 Eve
16. Motorola Heron
17. Motorola Morrison – Cliq
18. Motorola Sholes
19. Philips V808
20. Samsung Bigfoot
21. Samsung Galaxy i7500
22. Samsung m850 Q
23. Sciphone N12
24. Sony Ericsson XPERIA X3 Rachael
25. Zii Egg
26. ZTE Android

Those in BOLD are available now (2009/08)

Verizon + Motorola “Shules” + Donut

根據這篇Verizon’s first Android phone? Say hello to the Motorola “Shules”


搶先圖



嘖嘖 感覺還不賴 算是蠻特別的設計

不過按鍵只把donut的按鍵換順序麻 @@

以下是donut emulator WVGA skin :



相關文章?

Motorola Morrison 也快要推出了!

Androud Donut update information

Friday, July 31, 2009

一次搞懂OTA

這幾天看了一些,寫了些小筆記


什麼是OTA ?

OTA 其實就是 FOTA @@

以及與OTA相關的 OMA介紹

看到一個比較詳盡的整理

wiki : Over-the-air programming

Over-the-air programming (OTA) may refer to either free-to-air, terrestrial television, or in the mobile content world, over-the-air service provisioning (OTASP), over-the-air provisioning (OTAP) or over-the-air parameter administration (OTAPA), methods of distributing new software updates to cellphones or provisioning handsets with the necessary settings with which to access services such as WAP or MMS. Some phones with this capability are labeled as being "OTA capable."

Slide

Plurk