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For the Inventor, By the Inventor

Cupertino, CA, United States of America

Yiming Jim Yu

This inventor holds 13 USPTO granted patents and 1 published patent application. Top assignee: Trimble Navigation Limited. Active years: 2000-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yiming Jim Yu. Retrieved from https://idiyas.com/inventor/yiming-jim-yu

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

USPTO Granted Patents = 13 

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 7

Forward Citations = 102(Granted Patents)


Company Filing History:

goldMedal13 out of 1,186 
 
Trimble Navigation Limited
 patents

Years Active: 2000-2010

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13 patents (USPTO):Explore Patents
1. 7791534 - GNSS time fraction calibration of a real time clock (2010-09-07),
2. 7555032 - Signal receiver using alternating time segments (2009-06-30),
3. 7532159 - Fast time to first fix by calibration of a real time clock (2009-05-12),
4. 7480325 - Signal receiver for integrating and combining integrations in alternating time segments for signal acquisition at low signal strength (2009-01-20),
5. 7466263 - GNSS receiver using stored navigation data bits (2008-12-16),
6. 7365681 - GPS receiver having a prescribed time-of-entry into an operation mode (2008-04-29),
7. 7348921 - GPS receiver using stored navigation data bits for a fast determination of GPS clock time (2008-03-25),
8. 7197064 - Signal receiver having signal acquisition at low signal strength using interleaved time segments (2007-03-27),
9. 6990140 - Signal receiver using coherent integration in interleaved time periods for signal acquisition at low signal strength (2006-01-24),
10. 6898234 - Signal receiver for integrating and combining integrations in alternating time segments for signal acquisition at low signal strength (2005-05-24),
11. 6879913 - Indoor GPS clock (2005-04-12),
12. 6725157 - Indoor GPS clock (2004-04-20),
13. 6154170 - Enhanced attitude determination system using satellite navigation (2000-11-28),

Title: Yiming Jim Yu: Innovator in GNSS Technology

Introduction

Yiming Jim Yu is a prominent inventor based in Cupertino, CA, known for his significant contributions to the field of Global Navigation Satellite Systems (GNSS). With a total of 13 patents to his name, he has made remarkable advancements in the technology that underpins modern navigation systems.

Latest Patents

Among his latest patents is the "GNSS time fraction calibration of a real time clock." This invention features a generic GNSS signal receiver that achieves a fast time to first fix by calibrating a low power always-on real time clock (RTC). The receiver includes an RTC calibrator with a fraction calculator and a time expander. Before the receiver is powered off, the fraction calculator utilizes the fine resolution of GNSS time to determine a time fraction for RTC time. Upon powering back on, the time expander estimates RTC time drift during the power-off period and uses the time fraction to enhance the resolution of the RTC time for an RTC time tick. Additionally, a signal navigation processor employs the calibrated RTC time to assist in achieving a first fix with code phase search, integration time periods, and resolution of epoch integer and/or location-in-space of GPS satellites.

Another notable patent is the "Signal receiver using alternating time segments." This invention describes a GPS receiver and method that utilizes alternating 'A' and 'B' integration time segments. The polarities of certain GPS data bits are predetermined, and their expected reception times are known. The GPS signal is processed in 10 millisecond "A" and "B" time segments, with the signal depolarized according to the known polarities. The integrated depolarized GPS signal during the "A" time period provides a magnitude for each code phase, while the "B" time period does the same for its segments. The strongest time period magnitudes are then compared to a correlation threshold to select a code phase for signal acquisition.

Career Highlights

Yiming Jim Yu has established himself as a key figure in the GNSS technology sector. His work at Trimble Navigation Limited has been instrumental in advancing the capabilities of navigation systems. His innovative patents reflect his deep understanding of the complexities involved in GNSS technology and its applications.

Collaborations

Throughout his career, Yiming has collaborated with notable colleagues, including Peter Van Wyck Loomis and Xia

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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