Toshiyuki Morii

This inventor holds 95 USPTO granted patents and 19 published patent applications, plus 22 CIPO patents and 33 EPO patents, primarily in Audio Encoding (CPC class G10L19-24). Top assignees: Panasonic Corporation, Matsushita Electric Industrial Co., Ltd., Panasonic Intellectual Property Corporation of America. Active years: 1993-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiyuki Morii. Retrieved from https://idiyas.com/inventor/toshiyuki-morii

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

USPTO Granted Patents = 95 (Patent Applications = 19)

% Patents Active = 77.9

CIPO Patents = 22 (Patent Applications = 10)

EPO Patents = 33 (Patent Applications = 31)

Average Co-Inventor Count = 1.9

ph-index = 13

Forward Citations = 610(Granted Patents)

Forward Citations (Not Self Cited) = 462(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Tokyo, JP (1993 - 2001)
Kawasaki, JP (2001 - 2013)
Osaka, JP (2010 - 2013)
Kanagawa, JP (2008 - 2021)

Company Filing History:

45 out of 16,454

Panasonic Corporation

patents

34 out of 27,375

Matsushita Electric Industrial Co., Ltd.

patents

12 out of 4,008

Panasonic Intellectual Property Corporation of America

patents

4. 2 out of 4,921

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

patents

5. 1 out of 5,300

Nippon Telegraph and Telephone Corporation

patents

6. 1 out of 13,338

Panasonic Intellectual Property Management Co., Ltd.

where one patent can have more than one assignee

Years Active: 1993-2021

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Areas of Expertise:

Vector Quantization

Audio Encoding

Speech Coder

Encoding Device

Decoding Device

Quantization Device

Adaptive Sound Source

Band Power Computation

Noise Estimating

Communication Processing

Stereo Signal Encoding

High-Pass Characteristic

95 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11114106 - Vector quantization of algebraic codebook with high-pass characteristic for polarity selection (2021-09-07),

2. 10176816 - Vector quantization of algebraic codebook with high-pass characteristic for polarity selection (2019-01-08),

3. 9581623 - Band power computation device and band power computation method (2017-02-28),

4. 9558752 - Encoding device and encoding method (2017-01-31),

5. 9324331 - Coding device, communication processing device, and coding method (2016-04-26),

6. 9230553 - Fixed codebook searching by closed-loop search using multiplexed loop (2016-01-05),

7. 9153242 - Encoder apparatus, decoder apparatus, and related methods that use plural coding layers (2015-10-06),

8. 9135919 - Quantization device and quantization method (2015-09-15),

9. 9123334 - Vector quantization of algebraic codebook with high-pass characteristic for polarity selection (2015-09-01),

10. 9009037 - Encoding device, decoding device, and methods therefor (2015-04-14),

11. 8935162 - Encoding device, decoding device, and method thereof for specifying a band of a great error (2015-01-13),

12. 8935161 - Encoding device, decoding device, and method thereof for secifying a band of a great error (2015-01-13),

13. 8918315 - Encoding apparatus, decoding apparatus, encoding method and decoding method (2014-12-23),

14. 8918314 - Encoding apparatus, decoding apparatus, encoding method and decoding method (2014-12-23),

15. 8838443 - Encoder apparatus, decoder apparatus and methods of these (2014-09-16),

Title: The Innovative Contributions of Toshiyuki Morii

Introduction: Toshiyuki Morii, based in Kanagawa, Japan, is a distinguished inventor with an impressive portfolio of 95 patents. His work is primarily focused on advancements in voice coding and vector quantization technologies, which have significant implications for audio processing.

Latest Patents: One of his latest patents details a "Vector quantization of algebraic codebook with high-pass characteristic for polarity selection." This innovation provides a vector quantization device, voice coding device, vector quantization method, and voice coding method that leads to a reduction in the calculation amount of voice codec while maintaining voice quality. The vector quantization device operates through a first reference vector calculation unit that computes a first reference vector by applying auditory weighting using LPC synthesis filters. Additionally, a second reference vector calculation unit further refines this by applying a filter characterized by high-pass functionality. A polarity preliminary selection unit is employed, generating a polar vector and selecting a unit pulse of either positive or negative polarity based on the elements of the second reference vector.

Career Highlights: Toshiyuki Morii has contributed to noteworthy advancements in his field while working for prominent firms, including Panasonic Corporation and Matsushita Electric Industrial Co., Ltd. His extensive experience in these leading companies has honed his skills and expanded his contributions to technology.

Collaborations: Throughout his career, Morii has collaborated with notable colleagues, including Kazutoshi Yasunaga and Hiroyuki Ehara. These partnerships have facilitated innovative developments and propelled the advancement of voice coding technology.

Conclusion: Toshiyuki Morii's contributions to innovation in voice coding and vector quantization are significant, with a strong emphasis on improving quality without sacrificing performance. His extensive patent portfolio is a testament to his inventive prowess and commitment to technological advancement in audio processing.

Profile summary based on public USPTO records.