Feeds:
文章
留言

Network Impedance Matching Calculator

Network Impedance Matching Calculator.

Allen Lu Advance: 免費 RF 軟體及阻抗匹配 (Impedance Matching)

Allen Lu Advance: 免費 RF 軟體及阻抗匹配 (Impedance Matching).

費城實驗及蒙托克計劃 – 美國觀察 – 特異功能,再連結療癒-台灣 ~ 超自然 X-file

陰謀論(10) – 費城實驗及蒙托克計劃 – 美國觀察 – 特異功能,再連結療癒-台灣 ~ 超自然 X-file.

Energy Harvesting Wireless Sensor Modules, Receiver & Transceiver Modules and Accessories in 868 MHz | EnOcean - Products

Energy Harvesting Wireless Sensor Modules, Receiver & Transceiver Modules and Accessories in 868 MHz | EnOcean – Products

Energy Harvesting Wireless Sensor Modules, Receiver & Transceiver Modules and Accessories in 868 MHz | EnOcean – Products.

 

 

Energy Harvesting Wireless Technology for Home and Building Automation – EnOcean Alliance.

The EnOcean Alliance develops and promotes self-powered wireless monitoring and control systems for sustainable buildings by formalizing the interoperable wireless standard.

  • Profile
    The wireless standard for sustainable buildings – No Wires. No Batteries. No Limits.
  • Board of Directors
    Get to know Board of Directors of the EnOcean Alliance.
  • Our Members
    Promoters, Paticipants and Associates of the EnOcean Alliance

 

Developing: Near A Quarter Million Taiwanese Gathered to Protest for Human Rights Violation in Its Military – CNN iReport.

Developing: Near A Quarter Million Taiwanese Gathered to Protest for Human Rights Violation in Its Military

Developing: Near A Quarter Million Taiwanese Gathered to Protest for Human Rights Violation in Its Military

 

EE Times – 10 Projects Showcasing the Raspberry Pi\’s Versatility.

Slideshow

10 Projects Showcasing the Raspberry Pi’s Versatility

TechNews 科技新報 – Chromecast 已被破解 核心為特製版 Android.

Chromecast 已被破解 核心為特製版 Android

formats

Google 新發表的 Chromecast 電視棒以 35 元低廉的價格,讓使用者輕易的插上電視就可以用來播放網路內容的構想,在發表後馬上引發各方消費者的興趣,雖然其功能有所限制,不過在各方努力的逐一挖掘下,發現 Chromecast 的未來各種應用的潛力可能比 Google 所設定的還要多。

 

Google 的 Chromecast 原本的設計是讓使用者在電視串流播放網路內容的產品,是無法播放任何在電腦、平板或手機上的內容,除非先把內容上傳到網路上,而唯一可以同步畫面方式的就只有 Chrome 瀏覽器,因為瀏覽器本來就是觀看網路的內容,因此可以做到如同同步畫面般的功能(其實只是各自同時抓取來自網路的內容)。

不過,現在已有使用者發現,只要在電腦的 Chrome 瀏覽器中先行安裝 Google Cast 這個延伸套件,就可以用來播放存放在電腦中的內容,比如說影片。而且播放過程很簡單,只要把影片所在的路徑貼到 Chrome 中,才按下「Cast this tab to…」就可以播放出去了。

Screen-Shot-2013-07-25-at-8.44.55-AM-650x437

▲透過 Chrome 的延伸套件,Chromecast 也可以播放電腦中的影片

 

對玩家來說,僅僅播放在電腦中是難以滿足的,因此有玩家就直接 Root 進 Chromecast 的核心,並發現 Chromecast 的系統核心並非來自 Chrome OS,反而是接近 Google TV,採用的是特製版的 Android 系統。

由於採用了 Android 系統,因此可以預想得到在經過權限設定與軟體開發的配合下,Chromecast 其實是可以擁有許多的可能,或許可以直接做到如同 AppleTV 一樣直接播放電腦中的影片,而不光只是網路的內容串流。

▲Chromecast 已被 Root,核心為訂製版的 Android,而非 Chrome OS

 

至於 Chromecast 的硬體架構,先前 iFixit 也把它拆精光了,得知其使用了來自 Marvell DE3005-A1 的處理器,這雙核心,時脈為 1.2GHz 的晶片同樣為 ARM 的 A9 架構,以他的效能來看,播放影片的效能應是夠的,加上 512MB DDR3 低電壓記體、2GB 儲存空間,以及 Wi-Fi b/g/n 與 Bluetooth 3.0 的無線傳輸功能,的確有空間可做到一些功能,看來可以預期在未來大概可以看到一堆與 Chromecast 有關的奇妙運用了。

LVfRRZmZ3kMUvPUT.large

▲Chromecast 採用來自 Marvell ARM A9 架構的處理器

 

新聞來源: 

Chromecast Teardown

Google Chromecast Root Released, Opening Up All Kinds Of Possibilities [VIDEO]

Tip: You Can Play Local Video Files Through Chromecast

延伸閱讀:

Chromecast 真的是 AirPlay 殺手嗎?

Certification and Testing – Zhaga Consortium.

Certification and Testing

Certification

Zhaga-certified products are listed in the online Certified Products database, and can be identified by the Zhaga logo. Only certified products are allowed to carry the Zhaga logo.

When you see the Zhaga logo on a product, in a product advertisement, or in a product catalogue, you know that this product is Zhaga-certified. Correct usage of the logo can be confirmed by reference to the Certified Products database.

Zhaga-certified products have all been tested by an independent test lab, listed below, which verifies that the product complies with one of the Zhaga specifications (or “Books").

Certification is managed by the Zhaga Logo License Administrator (Zhaga-LLA). The Zhaga-LLA issues product certificates, authorizes test labs, monitors compliance, and acts against inappropriate use of the Zhaga logo.

Authorized Test Labs

The Zhaga-LLA will only certify products that have been tested by an “Authorized Test Lab”.

Zhaga authorizes test labs by location and by specification. Test labs that operate testing facilities at different locations need a separate authorization for each location. Also, Zhaga has created a family of specifications – known as “Books" – and test labs need separate authorization for each Book. 

Authorizing test labs by location and by specification makes it possible for the Zhaga-LLA to verify that the location is capable of testing compliance with a specification.

The Zhaga-LLA has authorized test labs at the following locations:

Book 2:

  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR  ARNHEM, The Netherlands
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany
  • UL LLC. 7036 Snowdrift Road, Allentown, PA 18106

Book 3:

  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR  ARNHEM, The Netherlands
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany
  • UL LLC. 7036 Snowdrift Road, Allentown, PA 18106

Book 4:

  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR  ARNHEM, The Netherlands
  • UL LLC. Via XXV Aprile, 3/B, 20875 Burago di Molgora (MB) Italy
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany

Book 5:

No test lab authorized yet.

Book 6:

No test lab authorized yet.

Book 7:

  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR  ARNHEM, The Netherlands
  • UL LLC. Via XXV Aprile, 3/B, 20875 Burago di Molgora (MB) Italy
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany

Book 8:

  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR  ARNHEM, The Netherlands
  • UL LLC. 7036 Snowdrift Road, Allentown, PA 18106
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany

Testing Center Agreements

Authorized Test Labs are governed by the rules in the Zhaga Testing Center Agreement between the Zhaga-LLA and companies that operate one or more test labs. A reference copy of this agreement is available as a public download: 20111213 Interim Zhaga Test Center Agreement – reference copy.pdf

The Zhaga-LLA will sign this Testing Center Agreement with any company that meets the following criteria:

  1. the company is a member of Zhaga
  2. the company owns and/or controls one or more testing facilities that are accredited by an accreditor that is a full member of ILAC MRA.

The Zhaga-LLA has concluded Testing Center Agreements with the following companies:

Test labs owned by companies that signed the Zhaga Testing Center Agreement do not automatically become an Authorized Test Lab. Each test lab must be authorized separately, in accordance with the procedure set out in article 3.1 and Annex C of the Zhaga Testing Center Agreement.