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John Chang
[email protected] • 0928730781• Taipei City, Taiwan
1. A result-driven engineer with solid multimedia technical background & experience:
- Help Taiwan image branch of CSR plc (merged with Qualcomm) to stand out as the software development center among U.S, China, Russia & Taiwan SW teams.
2. Eager to study state-of-art technology:
- Host the 2016 annual Innovation plan of company (Novatek) to improve the performance of adaptive streaming.
- Designated to stay in Zoran Corporation's headquarters at Silicon Valley to study company's latest dual cam platform of 2013.
3. A highly stress resistant worker able to meet urgent deadline in short time:
- spent 1.5 year only to complete master degree program.
- published 14 patents (all are the first author).
- got promotion to principal engineer within 2 years within Novatek.
- Top one engineer by the number of resolved issues within CSR plc.
- Bring up the streaming framework within 6 months at Noovo tech.
- Be able to write & publish patents.
- Top internal technical forum contributor of multimedia.
- Top internal lecture of multimedia training courses.
- Served as the trainer of workshop of Xi'an (China) branch of Android MM.
- 4 years in developing multimedia framework for Android & Linux smart TV.
- 3 years in developing multimedia framework for various camera, car recorder (Dash-cam), IP-cam and sport cam.
- 7.5 years involved in multimedia functionality development
- 1 year in developing X86 firmware & EFI BIOS program.
Experience
Experience : November 2017- Now: senior engineer of SAMBA TV
Experience : April 2017- November: technical leader of Noovo tech
Experience : February 2017- Present
1. Bring up the flow of translating DVB-T signal to WiFi HLS streaming; to provide the functionality to have mobile phone users to watch TV directly on their portable devices.
2. Fix two Subtitle issues for Google EXOPlayer (Support Karaoke type of subtitle; fix subtitle overlap bug).
3. Prepare to public a streaming patent (agent: SAINT ISLAND INTELLECTUAL Taiwan).
Experience : 01, November 2016- Present
Survey & develop novel funcationality on the newest player which supports adaptive streaming from Google named EXOPlayer.
Contributed 4 proposals of bug's fix & performance improvements to GitHub.
- far seek improvement; here is the commit.
- short seek improvement; advanced proposal is in progress.
- Fix the issue when the sequence of PTS is out of order by bidirectional prediction for skipToKeyframeBefore.
- Propose proposal to provide Trick Playback functionality (in progress).
Experience : July 2016 - 31 October 2016
1. (report, execution doc)Executed system platform department's annual advanced research scheme - Published one U.S & one China Patents of a user-friendly user interface to improve the quality of adaptive streaming.
2. Served as the lecturer to Novatek's image department about adaptive streaming (doc).
3. Served as the instructor of adaptive streaming and took the responsibility for writing the training manual (doc).
Experience: 01 October 2015 - 30 June 2016
Bring up the adaptive streaming flow on company's latest TV SOC & pass the test suit of Ligada iSuite for HbbTV.
Published one U.S, one Taiwan & one China Patents of a smart scheduling algorithm to arrange adaptive streaming.
Experience 01 July 2015 - 30 September 2015
- Port & bring up the first version of GStreamer with NovaTek's latest TV platform
- Contributed to GStreamer; reported 14 bugs; added 61 comments to bugs; checked in 2 fixes.
- Resolve dual video(audio) codec issues by input selector, link.
- Successfully connect FFMpeg with Gstadaptivedemux component.
Experience 01 March 2015 - 15 March 2015
Went to Xi'an (China) branch for hosting a seminar of Android Multimedia training.
Experience 01 January 2015 - 15 March 2015
- Help the first Shipment of NovaTek's smart TV to TCL. Contributed on Android Multimedia framework.
- Bring up & demo the smooth reverse playback upon the newest Android 5.0 Lollipop platform; demo (original video), doc (please open it with PowerPoint if possible since it contains animation).
Experience 01 October 2014 - 31 December 2014
1. Served as the onsite Shenzhen multimedia supporter at Shenzhen(China) for TCL Android smart TV project.
2. Published one U.S, one Taiwan & one China Patents of a surveillance video clips sharing framework between vehicles.
Experience 01 September 2014 - 30 September 2014
Bring up the new (first) feature of movie editing functionality for company's smart TV platform (doc).
Involved in the bring up of multimedia framework to Android 5.0 Lollipop with NovaTek's turnkey smart TV platform.
Experience 01 July 2014 - 31 July 2014
Served as Android Multimedia framework lecturer at NovaTek's headquarter (training data).
Bring up the first movie editing function (doc).
Experience 01 April 2014 - 30 June 2014
Survey & evaluate Android multimedia framework with NovaTek's TV SOC.
Published two series patents (each consists of Taiwan, China & US applications) of
1. file sharing method of car recorder(or dashcam)
2. A new MP4 storage method to insure the completeness of recorded files.
07 April 2014
01 April 2014
Experience 01 January 2014 - 31 March 2014
Experience December 2013
Experience November 2013
Experience 01 October 2013 - 31 October 2013
Experience 01 September 2013 - 30 September 2013
Experience 01 August 2013 - 30 August 2013
Experience 01 March 2013 - 01 August 2013
1: Involved in several camera projects from Nikon, Samsung & Sony.
2: Top 3 contributor in resolving software problems within image branch.
Experience 01 February 2013 - 28 February 2013
Experience 31 December 2012 - 31 January 2013
Experience 31 December 2012 - 31 January 2013
Experience 01 March 2011 - 30 September 2012
Achievement 01 March 2011 - 30 September 2012
Experience : September 2009 - September 2008
Worked for Insyde, responsible to Intel & AMD's chipset BIOS programming.
Experience : June 2007 - July 2008
教育背景
- 學士 : 國立清華大學 資訊工程學系
- 碩士 : 國立台灣大學資訊工程學系: 論文名稱 - Application and improvement of coding techniques for variable length code (link).
Education
- Bachelor : National Tsing Hua university, Computer Science.
- Master : National Taiwan university, Computer Science & information engineering: Theory - Application and improvement of coding techniques for variable length code (link)
技能
1. 多執行緒程式開發與除錯 - ex: 對開源專案Gstreamer多執行緒底下播放MPEG DASH時因多執行緒造成的時序問題提出解法並獲得核入 (解法報告；問題描述)
2. Android多媒體架構開發 - stagefright, nuplayer, mediacodec, EXOPlayer.
3. Linux多媒體架構開發 - GStreamer.
4. HTTP Adaptive bitrate streaming: Mpeg DASH, Smooth Streaming, HLS...
5. 多媒體播放器介面設計與新功能設計.
6. C & C++程式設計.
7. 相機軟韌體開發。
8. 各式多媒體檔案格式。
9. 編碼理論。
Skills
- Multi-thread programming & debug - ex: ever contributed to GStreamer for resolving mosaic issue by race condition (doc, bug report).
- Android Multimedia framework - stagefright, nuplayer, mediacodec, EXOPlayer.
- Linux Multimedia framework - Gstreamer.
- HTTP Adaptive bitrate streaming: Mpeg DASH, Smooth Streaming, HLS...
- Multimedia Player UI design & new feature evaluation.
- C & C++ programming.
- Camera middleware framework programming & debug.
- Various multimedia formats (container): ffmpeg.
- Coding theory.
專業知識
1. Android智慧型電視.
2. Linux智慧型電視.
3. 相機.
4. 行車紀錄器.
5. 運動型攝影機.
6. Surveillance (IPCAM).
7. OTT (Over-the-top_content).
8. 各式多媒體串流協定。
Domain Experience
- Android smart TV.
- Linux smart TV.
- Camera.
- Car recorder (dashcam).
- Sport Cam.
- Surveillance (IPCAM).
- OTT (Over-the-top_content).
- Streaming service.
U.S patent
Storage method and processing device and video recording system thereof.
TW patent
File searching method and image processing device thereof.
TW patent
Storage method and processing device and video recording system thereof.
My wish & hobby
John Chang
[email protected] • 0928730781• Taipei City, Taiwan
1. A result-driven engineer with solid multimedia technical background & experience:
- Help Taiwan image branch of CSR plc (merged with Qualcomm) to stand out as the software development center among U.S, China, Russia & Taiwan SW teams.
2. Eager to study state-of-art technology:
- Host the 2016 annual Innovation plan of company (Novatek) to improve the performance of adaptive streaming.
- Designated to stay in Zoran Corporation's headquarters at Silicon Valley to study company's latest dual cam platform of 2013.
3. A highly stress resistant worker able to meet urgent deadline in short time:
- spent 1.5 year only to complete master degree program.
- published 14 patents (all are the first author).
- got promotion to principal engineer within 2 years within Novatek.
- Top one engineer by the number of resolved issues within CSR plc.
- Bring up the streaming framework within 6 months at Noovo tech.
- Be able to write & publish patents.
- Top internal technical forum contributor of multimedia.
- Top internal lecture of multimedia training courses.
- Served as the trainer of workshop of Xi'an (China) branch of Android MM.
- 4 years in developing multimedia framework for Android & Linux smart TV.
- 3 years in developing multimedia framework for various camera, car recorder (Dash-cam), IP-cam and sport cam.
- 7.5 years involved in multimedia functionality development
- 1 year in developing X86 firmware & EFI BIOS program.
Experience
Experience : November 2017- Now: senior engineer of SAMBA TV
Experience : April 2017- November: technical leader of Noovo tech
Experience : February 2017- Present
1. Bring up the flow of translating DVB-T signal to WiFi HLS streaming; to provide the functionality to have mobile phone users to watch TV directly on their portable devices.
2. Fix two Subtitle issues for Google EXOPlayer (Support Karaoke type of subtitle; fix subtitle overlap bug).
3. Prepare to public a streaming patent (agent: SAINT ISLAND INTELLECTUAL Taiwan).
Experience : 01, November 2016- Present
Survey & develop novel funcationality on the newest player which supports adaptive streaming from Google named EXOPlayer.
Contributed 4 proposals of bug's fix & performance improvements to GitHub.
- far seek improvement; here is the commit.
- short seek improvement; advanced proposal is in progress.
- Fix the issue when the sequence of PTS is out of order by bidirectional prediction for skipToKeyframeBefore.
- Propose proposal to provide Trick Playback functionality (in progress).
Experience : July 2016 - 31 October 2016
1. (report, execution doc)Executed system platform department's annual advanced research scheme - Published one U.S & one China Patents of a user-friendly user interface to improve the quality of adaptive streaming.
2. Served as the lecturer to Novatek's image department about adaptive streaming (doc).
3. Served as the instructor of adaptive streaming and took the responsibility for writing the training manual (doc).
Experience: 01 October 2015 - 30 June 2016
Bring up the adaptive streaming flow on company's latest TV SOC & pass the test suit of Ligada iSuite for HbbTV.
Published one U.S, one Taiwan & one China Patents of a smart scheduling algorithm to arrange adaptive streaming.
Experience 01 July 2015 - 30 September 2015
- Port & bring up the first version of GStreamer with NovaTek's latest TV platform
- Contributed to GStreamer; reported 14 bugs; added 61 comments to bugs; checked in 2 fixes.
- Resolve dual video(audio) codec issues by input selector, link.
- Successfully connect FFMpeg with Gstadaptivedemux component.
Experience 01 March 2015 - 15 March 2015
Went to Xi'an (China) branch for hosting a seminar of Android Multimedia training.
Experience 01 January 2015 - 15 March 2015
- Help the first Shipment of NovaTek's smart TV to TCL. Contributed on Android Multimedia framework.
- Bring up & demo the smooth reverse playback upon the newest Android 5.0 Lollipop platform; demo (original video), doc (please open it with PowerPoint if possible since it contains animation).
Experience 01 October 2014 - 31 December 2014
1. Served as the onsite Shenzhen multimedia supporter at Shenzhen(China) for TCL Android smart TV project.
2. Published one U.S, one Taiwan & one China Patents of a surveillance video clips sharing framework between vehicles.
Experience 01 September 2014 - 30 September 2014
Bring up the new (first) feature of movie editing functionality for company's smart TV platform (doc).
Involved in the bring up of multimedia framework to Android 5.0 Lollipop with NovaTek's turnkey smart TV platform.
Experience 01 July 2014 - 31 July 2014
Served as Android Multimedia framework lecturer at NovaTek's headquarter (training data).
Bring up the first movie editing function (doc).
Experience 01 April 2014 - 30 June 2014
Survey & evaluate Android multimedia framework with NovaTek's TV SOC.
Published two series patents (each consists of Taiwan, China & US applications) of
1. file sharing method of car recorder(or dashcam)
2. A new MP4 storage method to insure the completeness of recorded files.
07 April 2014
01 April 2014
Experience 01 January 2014 - 31 March 2014
Experience December 2013
Experience November 2013
Experience 01 October 2013 - 31 October 2013
Experience 01 September 2013 - 30 September 2013
Experience 01 August 2013 - 30 August 2013
Experience 01 March 2013 - 01 August 2013
1: Involved in several camera projects from Nikon, Samsung & Sony.
2: Top 3 contributor in resolving software problems within image branch.
Experience 01 February 2013 - 28 February 2013
Experience 31 December 2012 - 31 January 2013
Experience 31 December 2012 - 31 January 2013
Experience 01 March 2011 - 30 September 2012
Achievement 01 March 2011 - 30 September 2012
Experience : September 2009 - September 2008
Worked for Insyde, responsible to Intel & AMD's chipset BIOS programming.
Experience : June 2007 - July 2008
教育背景
- 學士 : 國立清華大學 資訊工程學系
- 碩士 : 國立台灣大學資訊工程學系: 論文名稱 - Application and improvement of coding techniques for variable length code (link).
Education
- Bachelor : National Tsing Hua university, Computer Science.
- Master : National Taiwan university, Computer Science & information engineering: Theory - Application and improvement of coding techniques for variable length code (link)
技能
1. 多執行緒程式開發與除錯 - ex: 對開源專案Gstreamer多執行緒底下播放MPEG DASH時因多執行緒造成的時序問題提出解法並獲得核入 (解法報告；問題描述)
2. Android多媒體架構開發 - stagefright, nuplayer, mediacodec, EXOPlayer.
3. Linux多媒體架構開發 - GStreamer.
4. HTTP Adaptive bitrate streaming: Mpeg DASH, Smooth Streaming, HLS...
5. 多媒體播放器介面設計與新功能設計.
6. C & C++程式設計.
7. 相機軟韌體開發。
8. 各式多媒體檔案格式。
9. 編碼理論。
Skills
- Multi-thread programming & debug - ex: ever contributed to GStreamer for resolving mosaic issue by race condition (doc, bug report).
- Android Multimedia framework - stagefright, nuplayer, mediacodec, EXOPlayer.
- Linux Multimedia framework - Gstreamer.
- HTTP Adaptive bitrate streaming: Mpeg DASH, Smooth Streaming, HLS...
- Multimedia Player UI design & new feature evaluation.
- C & C++ programming.
- Camera middleware framework programming & debug.
- Various multimedia formats (container): ffmpeg.
- Coding theory.
專業知識
1. Android智慧型電視.
2. Linux智慧型電視.
3. 相機.
4. 行車紀錄器.
5. 運動型攝影機.
6. Surveillance (IPCAM).
7. OTT (Over-the-top_content).
8. 各式多媒體串流協定。
Domain Experience
- Android smart TV.
- Linux smart TV.
- Camera.
- Car recorder (dashcam).
- Sport Cam.
- Surveillance (IPCAM).
- OTT (Over-the-top_content).
- Streaming service.
U.S patent
Storage method and processing device and video recording system thereof.
TW patent
File searching method and image processing device thereof.
TW patent
Storage method and processing device and video recording system thereof.
My wish & hobby