David M Motley

This inventor holds 17 USPTO granted patents, primarily in Digital Modem Technology. Top assignees: Hycom Incorporated, Adc Dsl Systems, Inc.. Active years: 1976-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David M Motley. Retrieved from https://idiyas.com/inventor/david-m-motley

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

USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 11

Forward Citations = 302(Granted Patents)

Company Filing History:

Adc Dsl Systems, Inc.

patents

Years Active: 1976-2004

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Areas of Expertise:

Digital Modem

Adaptive Phase Lock Loop

Error Correction

Timing Recovery

Frequency Multiplexing

Data Transmission

Automatic Gain Control

Pulse Learning

Phase Tracking

Signal Processing

Modulation Techniques

Data Receiver

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6785340 - PCM upstream and downstream system for universal digital loop carrier (2004-08-31),

2. 5038366 - Frequency multiplexed full duplex 4800 BPS modem (1991-08-06),

3. 4937839 - Frequency multiplexed full duplex 4800 bps modem (1990-06-26),

4. 4731800 - Raised-cosine filtering for modems (1988-03-15),

5. 4726029 - Error-correcting modem (1988-02-16),

6. 4597089 - Single pulse fast learn modem (1986-06-24),

7. 4458355 - Adaptive phase lock loop (1984-07-03),

8. 4061978 - Timing recovery for an automatically equalized data modem (1977-12-06),

9. 4061977 - Phase tracking network (1977-12-06),

10. 4028626 - Digital data receiver with automatic timing recovery and control (1977-06-07),

11. 3988539 - Data transmission system using optimal eight-vector signaling scheme (1976-10-26),

12. 3979685 - Frequency shift key demodulator (1976-09-07),

13. 3971996 - Phase tracking network (1976-07-27),

14. 3962637 - Ultrafast adaptive digital modem (1976-06-08),

15. 3943448 - Apparatus and method for synchronizing a digital modem using a random (1976-03-09),

Title: The Innovative Contributions of David M. Motley

Introduction

David M. Motley, located in Santa Ana, California, is a prolific inventor with an impressive portfolio that includes 17 patents. His groundbreaking work primarily revolves around advancements in digital communication systems, demonstrating his pivotal role in the technology sector.

Latest Patents

Some of David M. Motley's latest patents showcase his expertise in digital loop carrier systems. One notable patent is the "PCM Upstream and Downstream System for Universal Digital Loop Carrier." This innovation involves a central office line unit (COLU) that facilitates pulse code modulation (PCM) communications. The system includes a hybrid circuit for analog signal transmission, an analog-to-digital converter, a digital transmission circuit, and a quantizer to evaluate and process signals. Additionally, another significant patent is the "Frequency Multiplexed Full Duplex 4800 BPS Modem," which provides full duplex operation over switched telephone networks without cancellation, leveraging advanced analog and digital filtering techniques.

Career Highlights

David has worked with several esteemed companies, including Hycom Incorporated and ADC DSL Systems, Inc. His contributions to these organizations have significantly advanced their communication technologies, underscoring his expertise in the field.

Collaborations

Throughout his career, David has collaborated with distinguished professionals such as King Y. Cheng and John F. Stockman. These partnerships have likely enriched his inventive processes and broadened the impact of his innovations within the industry.

Conclusion

David M. Motley’s inventive prowess has made a remarkable impact on the digital communication landscape. With his 17 patents, he exemplifies the driving force of innovation, continually enhancing how we connect and communicate in an ever-evolving technological world. His contributions not only reflect his ingenuity but also pave the way for future advancements in the field.

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]