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For the Inventor, By the Inventor

San Jose, CA, United States of America

E-Cheng Chang

This inventor holds 12 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignee: Apple Inc.. Active years: 2012-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: E-Cheng Chang. Retrieved from https://idiyas.com/inventor/e-cheng-chang

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 12 

% Patents Active = 75.0


Average Co-Inventor Count = 1.9

ph-index = 5

Forward Citations = 111(Granted Patents)


Location History:

  • Cupertino, CA (US) (2015)
  • San Jose, CA (US) (2012 - 2017)
  • San Francisco, CA (US) (2012 - 2018)

Company Filing History:

goldMedal12 out of 43,632 
 
Apple Inc.
 patents

Years Active: 2012-2018

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12 patents (USPTO):Explore Patents
1. 9924112 - Automatic video stream selection (2018-03-20),
2. 9706136 - Automatic video stream selection (2017-07-11),
3. 9565365 - Camera-based orientation fix from portrait to landscape (2017-02-07),
4. 8994775 - Automatic video stream selection (2015-03-31),
5. 8958004 - Camera-based orientation fix from portrait to landscape (2015-02-17),
6. 8810684 - Tagging images in a mobile communications device using a contacts list (2014-08-19),
7. 8593558 - Camera-based orientation fix from portrait to landscape (2013-11-26),
8. 8593534 - Auto-triggered camera self-timer based on recognition of subject's presence in scene (2013-11-26),
9. 8451312 - Automatic video stream selection (2013-05-28),
10. 8401593 - Enabling speaker phone mode of a portable voice communications device having a built-in camera (2013-03-19),
11. 8233078 - Auto focus speed enhancement using object recognition and resolution (2012-07-31),
12. 8131322 - Enabling speaker phone mode of a portable voice communications device having a built-in camera (2012-03-06),

Title: E-Cheng Chang: Innovator in Video Technology

Introduction

E-Cheng Chang is a prominent inventor based in San Jose, California. He has made significant contributions to the field of video technology, holding a total of 12 patents. His innovative work focuses on enhancing communication devices through advanced video stream processing.

Latest Patents

One of E-Cheng Chang's latest patents is for an automatic video stream selection system. This invention utilizes a handheld communication device equipped with at least two cameras facing opposite directions. The device captures two video streams simultaneously and detects speech activity from the person in the video. By analyzing the direction of sound or lip movement, the device can automatically switch between the two video streams to create a multiplexed video stream. This innovative approach interleaves segments from both streams, enhancing the overall video quality and user experience.

Career Highlights

E-Cheng Chang has built a successful career at Apple Inc., where he has been instrumental in developing cutting-edge technologies. His work has not only advanced the capabilities of handheld devices but has also set new standards in video communication.

Collaborations

Throughout his career, E-Cheng has collaborated with talented individuals such as Koji Gardiner and Jason Rundle Rukes. These partnerships have fostered a creative environment that encourages innovation and the development of groundbreaking technologies.

Conclusion

E-Cheng Chang's contributions to video technology exemplify the spirit of innovation. His work continues to influence the way we communicate through video, making significant strides in the industry.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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