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Laptop News 2007-08-04
1. C-테스트: 키보드를 개선하였고, 평평한 표면을 우둘투둘한 표면으로 바꿈. 스페이스 바 모서리를 사선으로 함. 새로운 ENE 3700B 임베디드 컨트롤러를 채택함으로써, 배터리와의 통신에 이용되는 싱글 와이어 프로토콜을 지원하는 하드웨어가 포함됨.
1. C-Test: C-Test is underway. These XOs are fully textured (the flat exterior plastic has beaded surface); the keyboard is improved and included a beveled space bar. The most significant electrical change is the new ENE 3700B embedded controller (EC), which includes hardware support for the single-wire protocol used to communicate with the batteries.
2. 케이스만두: 자발적으로 조직된 OLPC 네팔의 Shankar Pokharel는 네팔 정부의 교육부와 협조 하에 커리큘럼 워크숍을 조직함. 교육부가 조직한 워크숍에 48명의 교육자와 개발자가 참가. 참가자들은 로컬 컨텐트 제작과 디지털화 단계를 논의함.
2. Kathmandu: Shankar Pokharel, from the self-organized OLPC Nepal, organized a curriculum workshop in coordination with Nepalese department of education. Forty-eight educationists and developers participated in the workshop which was inaugurated by Minister of Education Pradip Nepal. The participants outlined the steps needed for local content creation and digitization.
3. 빌드: Dan Winship는 노트북 시동 시간과 그래픽 인터페이스, 그리고 메모리 절약을 상당부분 개선함.
3. Builds: Dan Winship, who joined the Red Hat team a month ago, had a busy week: he has branched x11-xorg-utils package so that we don't have to pull in libGL; made fallback X logins work; fixed some startup issues; and removed some packages to save some disk space. John Palmieri has been cleaning up start-up scripts—for both the machine itself and the graphical environment. Startup speed has improved and we are saving a significant amount of memory (and complexity). John is taking advantage the work that Red Hat's Richard Hughes has done around D-Bus system activation.
4. Sugar: Dan modified the wedges in the “activity ring” on the home screen reflect memory usage. He also made added rollovers to the activity widgets for “resume” and “stop.” He ported our web activity to WebKit, the rendering engine used in both Apple's Safari and the KDE desktop. He found that memory usage was greatly reduced and performance much better. (The WebKit project is not quite ready for production use yet, but it shows real promise.) Finally, Dan got installation of activities from USB working.
Marco Gritti was (mostly) on vacation this week, but managed to rework the palette implementation to enable proper packaging of widgets; he made some API improvements and fix some bugs in the process; and he reviewed some patches and did some bug triage.
Ben Saller spent most of the week fixing bugs and also working on a version of the data store that supports versioning.
Tomeu Vizoso moved the activity-registration service from the shell to a shell-service process. This service will contain the clipboard and the object-type registry. He moved Sugar, Journal and the Browse Activity to the new activity register.
The Collabora team refined the definition of buddy and activity properties in anticipation of the first release of the software; once these properties are in the field, the are difficult to change.
Simon Schamijer has been working on the sharing feature in the Browse Activity; a web page to be “shared” appears as a thumbnail in a tray at the bottom of the page. From there you can select which page you want to view. Most of the parts are working and Simon hopes to have something ready for testing soon. Simon has also been adding a simple opcode to Csound that enables the reading of ogg vorbis files. The reason to use Csound rather than gstreamer is that is uses less then half of the CPU power and due to the concept of instruments you can playback different files at the same time easily. John Fitch and Eric de Castro Lopo are currently working on getting the ogg playback upstream into libsndfile, which is normally used in Csound5 to handle I/O of sound files.
5. 수리: 10살짜리 어린이도 XO 노트북을 수리할 수 있을 것으로 추정. OLPC 위키의 교본에 따라 10살 어린이와 8살 어린이가 분해와 조립을 수행함.
5. Repair: After Mitch Bradley asserted that a 10-year old could replace an XO motherboard, Joel Stanley was tasked with overseeing just that. On Tuesday, 10-year old Philip and his 8-year old sister Sophie were given an XO; using the instructions on the OLPC wiki they disassembled and reassembled it (for the most part independently). It didn't work the first time, so they proceeded to disassemble, troubleshoot a loose wire, and reassemble the XO. This second pass, when they were on their own, was successful (See http://dev.laptop.org/~joel/xo-video/).
6. 펌웨어: IPv6이 기본적으로 작동함. Lilian Walter는 IPv6로부터 HTTP을 통해 파일 다운로드에 성공함. 즉, router solicitation과 광고를 지원하는 코드를 작동함. 현재, IPv4 DNS 서버를 경유한 DNS AAAA 지원을 작업 중이며, IPv6 DNS에 도달할 수 있을 지를 시험할 예정. Mitch Bradley는 스쿨 서버의 어플리케이션 테스트를 수행할 것임. Ivan Krstić과 Michael Stone과의 협동 하에, 펌웨워 시큐리티 키를 위한 포맷을 정의함.
6. Firmware: IPv6 in the firmware is basically working. Lilian Walter has succeeded in downloading files via HTTP from the IPv6 internet. In other words, she has implemented code to support router solicitation and advertisement. Lilian is currently working on DNS AAAA support via an IPv4 DNS server and then she will see if she can get to an IPv6 DNS server. Mitch Bradley still needs to do application testing with the school server. In coordination with with Ivan Krstić and Michael Stone, Mitch Bradley has defined the format for firmware security keys.
7. 소프트웨어 설치: Dave Woodhouse과 Mitch Bradley는 멀티캐스트를 이용하는 생산 소프트웨어 설치를 구성함. Rafael Ortiz 과 Chris Ball이 이것을 테스트함. 낸드 플래시에 OS 이미지를 무선 설치하는 것이 가능할 것으로 보임 - 낸드 플래시 블럭들을 UDP 패킷으로 보내는 단순한 툴을 가지고 있는 데 (IPv4 또는 IPv6, 멀티캐스트 또는 유니캐스트), erase 블럭당 하나의 패리티 패킷임 (약간의 패킷 손실을 허용하기 위함). 우리는 또한 이러한 패킷들을 청취하고, 각각의 간단한 CRC32를 체크하며, erase 블럭들을 재조립하여, 파일이나 플래시 디바이스에 쓰기를 수행하는 corresponding 클라이언트를 가지고 있음.
7. Manufacturing software installation: Dave Woodhouse and Mitch Bradley build a manufacturing software installation system using multicast. Rafael Ortiz and Chris Ball worked on testing it with them. Wireless installation of OS images to the NAND flash is looking promising—we now have a simple tool that sends NAND flash blocks in UDP packets (by IPv4 or IPv6, multicast or unicast), with one parity packet per erase block (to allow for a small amount of packet loss). We also have a corresponding client that listens for these packets, checks a simple CRC32 on each one, and reassembles the erase blocks, writing them to a file or to a flash device. Mitch is implementing the client side for OpenFirmware.
The interesting part turns out to be 802.11 multicast. First, the access point (AP) will retransmit any multicast packets generated by clients—so to avoid wasting bandwidth we actually want the AP itself to generate them in the first place (perhaps bridged from its wired interface). Second, and more importantly, most equipment sends multicasts at the lowest “basic rate”—rates which are mandatory for all clients to support—which tends to be 1Mb/s, and is not fast enough to be useful. One way to fix this is to configure the AP not to include the lower rates in its basic set. This approach has been successfully tested in QSMC, but only by using a Broadcom 4306 wireless device in a laptop as the AP, using the “hostapd” software. Unfortunately, the Broadcom drivers are not reliable at rates above 11Mb/s, so testing at higher rates has not been possible. We need to find a standalone access point where the basic rate can be tuned or, perhaps, find a way to use the Marvell “libertas” devices for this purpose. (There is a possibility that we could use mesh mode for this purpose, but we may have issues with nodes retransmitting multicast packets to each other.) Further testing of this aspect of the distribution system is required.
8. 인프라스트럭처 테스트: Chris Ball은 틴더박스 (Tinderbox) 어디션을 작업하였음. Dan Williams은 액티비티 시동 시간을 측정하기 위한 recipe을 Chris에게 제공함: 틴더박스는 곧 빌드의 각 액티비티들이 제대로 시동되는지 여부와 각각의 시동 시간을 측정하는데 이용될 수 있을 것임.
8. Testing infrastructure: Chris Ball worked on Tinderbox additions. Dan Williams gave Chris a recipe for measuring activity startup time; the tinderbox will soon to be able to measure whether each activity in a build starts up okay, and exactly how long each one takes to do so.
9. 무선 재개: Richard Smith, Ronak Chokshi, Marcelo Tosatti, Javier Cardona, Jordan Crouse 등은 무선 재개 문제를 깊이있게 분석함. 대기/재개 (suspend/resume) 작동을 상당히 개선하였지만, 아직 해결못한 문제들이 남아 있음.
9. Wireless resume: Richard Smith, Ronak Chokshi, Marcelo Tosatti, Javier Cardona, Jordan Crouse and others did a full-court press on the wireless-resume problems. While several bugs were found that improved suspend/resume behavior greatly, there is still uncertainty to the cause of the remaining problem(s).
10. 낸드 데이터 손실: 두 대의 XO (B2와 B4 하나씩)에서 #1905 버그가 발견되어, Mitch Bradley, Dave Woodhouse, Luna Huang, Brian Ma 등이 분석 중.
10. NAND data-corruption: Bug #1905, which has been seen in two XOs (one B2 and one B4) has gotten the attention of Mitch Bradley, Dave Woodhouse, Luna Huang, Brian Ma, and others.
11. 구글 북: Luke Hutchison의 팀은 구글의 스캔된 PD 북 대부분을 위한 메타데이터와 크로스 링키지를 보유하며, 선택 범주와 더불어 약 10만권의 이미지, OCR 텍스트 그리고 메터데이터를 쉽게 공유할 수 있게 됨. Luke의 여름 작업은 그러한 선택을 위해 기존 메타데이터에 퀘리를 돌리는 방법을 만들었음. 저작권과 (놀랍게도) 미국의 "공공 도메인"이 모든 곳에서 공공은 아니라는 이슈가 남아있음; 그들의 현재 입장은 미국에 있는 서버들을 통해서만 제공함으로써 국제 저작권법을 피해가려는 것이지만, 신속한 선정과정이 곧 가용할 것임.
11. Google Books: Luke Hutchison's team has metadata and cross-linkage for most of Google's scanned PD books and can readily share images, OCR text, and metadata for 100,000 volumes, given selection criteria. Luke's summer work has been creating a way to run queries on the existing metadata to make such selections. There are still issues with copyright, surprisingly, as “public domain” in the US does not mean public everywhere; their current stance is to avoid worrying about international copyright law by only providing works through US-based servers, but making a quick selection will soon be possible.
12. 우리들 이야기: 우리들 이야기 팀은 온라인 브라우징과 스토리 업로딩을 위한 인터페이스를 준비 중이며, 인터페이스와 다른 자료들의 지역화 팀을 보유함. 스토리의 기록과 업로드를 위한 프로젝트의 클라이언트 액티비티를 관리하는 John Huang은 8월 말까지 일련의 기록 코드를 공개할 예정.
12. Our Stories: The Our Stories team is preparing interfaces for online browsing and uploading stories and have a localization team on reserve to localize interfaces and other materials the last week in August. John Huang, who is maintaining the client Activity for the project that records and uploads stories expects to publish some recording code by the end of August.
13. 위키 리더: Mali의 Renaud Gaudin은 오프라인 위키리더인 Moulin을 작업 중이며, XO 상의 디스플레이를 개선하고 있음. (See http://moulinwiki.org/) 그는 또한 사람들이 프록시 서버를 통해 편집 업스트림을 전달할 수 있는 방법을 연구 중임.
13. Wikireader: Renaud Gaudin of Mali has been working on Moulin, an off-line wikireader, and is working on making it display well on the XO (See http://moulinwiki.org/). He is also developing ways to let people pass edits upstream through a moderated proxy server.
14. 지도: Schuyler Erle과 UNICEF는 어린이들이 자기 마을의 지역 지도를 만들고, 공공 데이터로부터 가벼운 지역 지도 팩을 구성할 수 있는 OpenLayers과 관련 FeatureServer의 수행을 작업 중임. OpenLayers는 수정없이도 B4에서 잘 돌아가며, 창조자들을 위한 또 하나의 포맷을 제공함: 지도 레이어와 관련 데이터.
14. Maps: Schuyler Erle and UNICEF are working on an implementation of OpenLayers and the related FeatureServer to support children creating local maps of their villages, and on building lightweight regional map packs from public data. OpenLayers runs smoothly on a B4 without modification, providing another format for creators: a map layer and associated data.
More News
laptop.org 메일맨 사이트를 방문하여, OLPC 커뮤니티-뉴스 메일링 리스트에 가입할 수 있습니다.
문의: press@racepointgroup.com
마일스톤
마일스톤.
OLPC의 언론발표
| Ene. 2007 | 상업용 OLPC에 대해서는 No T플랜입니다. OLPC has No Plans to Commercialize XO Computer. |
| Ene. 2007 | 전례가 없는 새로운 타입의 XO 사용자 인터페이스 발표 OLPC Announces First-of-Its-Kind User Interface for XO Laptop Computer. |
| Ene. 2007 | 르완다가 OLPC에 참여를 선언했습니다. Rwanda Commits to One Laptop per Child Initiative. |
| Dic. 2006 | [저비용 http://news.yahoo.com/s/ap/20061231/ap_on_hi_te/hundred_dollar_laptop 노트북]이 배움의 형태를 바꿀 수 있습니다. Low Cost Laptop Could Transform Learning. |
언론보도
| 12 Abr. 2007 | EYF Times | 과학자와의 만남: 니콜라스 네그로폰테 Meet the Scientist: Nicholas Negroponte |
| 11 Abr. 2007 | CNET News | 사진: 노트북을 켜는 나이지리아 아이들 Photos: Nigerian students power up their laptops |
| The News | 100달러 노트북을 받는 가난한 태국 학생들 Poor rural Thai students to get 100-dollar laptops | |
| 29 Mar. 2007 | ComputerWorld | $100 노트북을 위한 실험적인 배터리 OLPC eyes experimental battery for $100 laptop |
| 16 Mar. 2007 | The Santiago Times | 값싼 노트북이 칠레에서 상업 세계 프리미어를 선보인다 Cheap Laptop Makes Commercial World Premiere in Chile |
| 13 Mar. 2007 | Bostonist | OLPC에 흩뿌려진 슈가 Pour Some Sugar on OLPC |
| 12 Mar. 2007 | BusinessWeek | 슈가와의 만남...$100 노트북 디자인의 도약 Meet Sugar...The face of the $100 laptop and a quantum leap in design |
| 7 Mar. 2007 | The China Post | $100 노트북을 위한 부품 제조업자들이 쇄도 Parts makers surge on US $100 Laptops |
| ZDNet | 세상을 바꿀 노트북 A laptop to change the world | |
| Herald Tribune | 시장 상황: 대만 부품 제조업자들이 $100에 대폭 참여 Around the Markets: Taiwanese parts markers surge on $100 laptop giveaway | |
| 6 Mar. 2007 | Gamasutra | SJ Klein은 OLPC를 위한 신중한 컨텐트를 요청 SJ Klein Asks For Serious OLPC Content |
| 1 Mar. 2007 | BusinessWeek.com | $100 노트북의 모습 The Face of the $100 Laptop |
| 2007 | Linternaute: High-tech | Una computadora de USD 100 Un ordinateur à 100 dollars |
| 28 Feb. 2007 | eLearn Magazine | $100 노트북이 세상을 바꿀까? Can the "$100 Laptop" Change the World? |
| 27 Feb. 2007 | CNET | 저개발국에 PC를 전하기 위한 두 가지 비전 Two visions for delivering PCs to emerging nations |
| 13 Feb. 2007 | Newsweek International | 인터뷰: 사람들의 노트북 Interview: The People's Laptop |
| 12 Feb. 2007 | Silicon.com | 한 달 이내에 등장할 수 천 세트의 $100 노트북 Thousands of $100 laptops to within a month |
| 8 Feb. 2007 | MIT: Technology Review | 테크놀러지 리뷰: $100 노트북의 보안 모델 Technology Review: Security Model Released for the $100 Laptop |
| Feb. 2007 | Domus | 컴퓨터가 귀하를 구할 것이다 Un computer vi salverà: A computer will save you |
| IEEE Spectrum | Mary Lou Jepsen: 모두를 위한 노트북 Mary Lou Jepsen: Laptops for All | |
| 29 Ene. 2007 | Christian Science Monitor | 곧 등장할 $100 노트북의 상세한 모습 A closer look at what '$100 laptop' will be |
| 3 Ene. 2007 | EDTECH.com | $150 노트북 The $150 Notebook |
| networkworld.com | OLPC는 3분기에 대량 생산을 계획 OLPC Aims for Mass Production in Third Quarter | |
| IDG.net | OLPC는 하드웨어를 '슈가'로 달콤하게 만드는 중 One Laptop per Child Sweetens Hardware with 'Sugar' UI | |
| YAHOO! Finance | OLPC는 XO를 위한 신개념 노트북 인터페이스를 발표 OLPC Announces First-of-Its Kind User Interface for XO Laptop Computer |
OLPC 영상자료
| OLPC.TV | 비디오 컬렉션 A collection of several videos |
| redhatmagazine.com | Red Hat Magazine: OLPC, 에피소드 원 Red Hat Magazine: Inside One Laptop per Child, Episode One |
| sf.tv | 스위스에서 보내온 OLPC 비디오 2007년 1월 26일 OLPC Video from Switzerland, 26.01.2007 |
| acm.org | $100에 관한 니콜라스 네그로폰테와의 인터뷰 Interview with Nicholas Negroponte on the &100 Laptop |
| techpresentations.com | FOSDEM 2007에서 있었던 Jim Gettys의 프리젠테이션 Presentation by Jim Gettys at FOSDEM 2007 |
| globo.com | 노트북을 실험 중인 학생들 Crianças testam computador portátil Students test the laptop, GLOBO- BRASIL |
| stanford.edu | Mark Foster가 스탠포드 대학에서 프리젠테이션을 진행 Mark Foster delivers presentation to Standford University |
| technologyreview.com | 테크롤러지 리뷰 미니 다큐먼터리 Technology Review Mini-Documentary |
| radiofarda.com | 브리프 데모 A Brief Demo |