Glass OS

Glass OS (Google XE)
Developer	Google
Written in	C (core), C++, Java
OS family	Android
Working state	discontinued
Source model	Open source with closed source components
Initial release	XE4 / Script error: No such module "Date time".
Yes\|Final release\|Latest release}}	XE23 / June 20, 2017
Marketing target	Augmented Reality
Available in	Multi-lingual
Update method	FoTA
Platforms	32-bit ARM
Kernel type	Monolithic (modified Linux kernel)
License	Developer Preview: proprietary; Apache License 2.0; Linux kernel patches under GNU GPL v2
Official website	www.google.com/glass

Glass OS (Google XE) was a version of Google's Android operating system designed for Google Glass. "glass-omap" Tag is used in referring to the modified Android code which can be found inside Kernel Repository.^[5] Glass OS was discontinued on June 20, 2017.^[6]

Release history

The following list shows the main changes happened for each update release.^[7] For more detailed release notes visit the support website.

April 11, 2013: XE4.0

Initial release.

May 7, 2013: XE5.0

XE5 updates included:^[8]

Change to sync policy: require power + WiFi for background uploads
Crash reporting
Incoming G+ notifications (direct shares, comments, +mentions), including ability to comment and +1
Incoming Hangout notifications
Transcription of queries & messages is now wicked-fast
Long-press to search from anywhere in the UI (no longer just from off)
International number dialing + SMS
Hop animation on disallowed swipes in the UI
New On-Head Detection calibration flow
Show device Serial Number on Device Info card
More reliable estimation of battery charge remaining
New recipient-list mosaic

June 4, 2013: XE6.0

XE6 updates include:^[9]

Better photos through Glass
Voice annotate your photos and videos when sharing
Improvements to On-Head Detection. Please re-calibrate to enable the improvements.
Improved cards in Google Now for Sports, and a new card for Birthdays
Fixes for several issues

Glass OS update

Glass was updating by itself automatically over the air. Glass was checking Google servers periodically for updates. When an update was available, Glass was downloading it to the device and was installing the update all by itself. That was happening under the condition of active battery charging and a reliable Wi-Fi connection.^[10]

References

↑ "Android Code Analysis". http://www.ohloh.net/p/android/analyses/latest.
↑ "Philosophy and Goals". Android Open Source Project. http://source.android.com/about/philosophy.html.
↑ "Developer Preview License Agreement | Android Developers". Developer.android.com. http://developer.android.com/wear/license.html.
↑ "Licenses". Android Open Source Project.. Open Handset Alliance. http://source.android.com/source/licenses.html. "The preferred license for the Android Open Source Project is the Apache Software License, 2.0. ... Why Apache Software License? ... For userspace (that is, non-kernel) software, we do in fact prefer ASL2.0 (and similar licenses like BSD, MIT, etc.) over other licenses such as LGPL. Android is about freedom and choice. The purpose of Android is promote openness in the mobile world, but we don't believe it's possible to predict or dictate all the uses to which people will want to put our software. So, while we encourage everyone to make devices that are open and modifiable, we don't believe it is our place to force them to do so. Using LGPL libraries would often force them to do so."
↑ "Refs - kernel/omap - Git at Google" (in en). https://android.googlesource.com/kernel/omap/+refs.
↑ "Glass OS was a product killed by Google in 2017" (in en). https://killedby.tech/google/glass-os/.
↑ "Release notes - Google Glass Help" (in en). https://support.google.com/glass/topic/3284652?hl=en&ref_topic=3063354.
↑ "Google Glass Explorer Editions start receiving XE5 software update, new features". 8 May 2013. https://www.engadget.com/2013/05/07/glass-explorer-editions-start-receiving-xe5-software-update-new-features/.
↑ "Google Glass Receiving XE6 Update With Massive Photo Quality Improvements - Here Is The Full Changelog". 2013-06-04. http://www.androidpolice.com/2013/06/04/google-glass-receiving-xe6-update-with-massive-photo-quality-improvements-here-is-the-full-changelog/.
↑ "Updating Glass software - Google Glass Help" (in en). https://support.google.com/glass/answer/3226482?hl=en.

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Original source: https://en.wikipedia.org/wiki/Glass OS. Read more

[1] "Android Code Analysis". http://www.ohloh.net/p/android/analyses/latest.

[philosophy-2] "Philosophy and Goals". Android Open Source Project. http://source.android.com/about/philosophy.html.

[3] "Developer Preview License Agreement | Android Developers". Developer.android.com. http://developer.android.com/wear/license.html.

[Licenses-4] "Licenses". Android Open Source Project.. Open Handset Alliance. http://source.android.com/source/licenses.html. "The preferred license for the Android Open Source Project is the Apache Software License, 2.0. ... Why Apache Software License? ... For userspace (that is, non-kernel) software, we do in fact prefer ASL2.0 (and similar licenses like BSD, MIT, etc.) over other licenses such as LGPL. Android is about freedom and choice. The purpose of Android is promote openness in the mobile world, but we don't believe it's possible to predict or dictate all the uses to which people will want to put our software. So, while we encourage everyone to make devices that are open and modifiable, we don't believe it is our place to force them to do so. Using LGPL libraries would often force them to do so."

[:0-5] "Refs - kernel/omap - Git at Google" (in en). https://android.googlesource.com/kernel/omap/+refs.

[6] "Glass OS was a product killed by Google in 2017" (in en). https://killedby.tech/google/glass-os/.

[7] "Release notes - Google Glass Help" (in en). https://support.google.com/glass/topic/3284652?hl=en&ref_topic=3063354.

[8] "Google Glass Explorer Editions start receiving XE5 software update, new features". 8 May 2013. https://www.engadget.com/2013/05/07/glass-explorer-editions-start-receiving-xe5-software-update-new-features/.

[9] "Google Glass Receiving XE6 Update With Massive Photo Quality Improvements - Here Is The Full Changelog". 2013-06-04. http://www.androidpolice.com/2013/06/04/google-glass-receiving-xe6-update-with-massive-photo-quality-improvements-here-is-the-full-changelog/.

[10] "Updating Glass software - Google Glass Help" (in en). https://support.google.com/glass/answer/3226482?hl=en.

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