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For the Inventor, By the Inventor

Hamamatsu, Japan

Yasuo Kageyama

This inventor holds 7 USPTO granted patents. Top assignee: Yamaha Corporation. Active years: 1995-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuo Kageyama. Retrieved from https://idiyas.com/inventor/yasuo-kageyama

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

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 6

Forward Citations = 153(Granted Patents)


Location History:

  • Shizuoka-ken, JP (1996)
  • Hamamatsu, JP (1995 - 1999)

Company Filing History:

goldMedal7 out of 5,501 
 
Yamaha Corporation
 patents

Years Active: 1995-1999

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7 patents (USPTO):Explore Patents
1. 5974387 - Audio recompression from higher rates for karaoke, video games, and (1999-10-26),
2. 5957696 - Karaoke apparatus alternately driving plural sound sources for (1999-09-28),
3. 5955693 - Karaoke apparatus modifying live singing voice by model voice (1999-09-21),
4. 5857171 - Karaoke apparatus using frequency of actual singing voice to synthesize (1999-01-05),
5. 5712437 - Audio signal processor selectively deriving harmony part from polyphonic (1998-01-27),
6. 5559962 - Data transmission system selecting both source and destination using (1996-09-24),
7. 5412152 - Device for forming tone source data using analyzed parameters (1995-05-02),

Title: Yasuo Kageyama: Innovator in Audio Technology

Introduction

Yasuo Kageyama is a prominent inventor based in Hamamatsu, Japan. He has made significant contributions to the field of audio technology, particularly in karaoke and gaming sound systems. With a total of 7 patents to his name, Kageyama's work has had a lasting impact on how sound is processed and reproduced in various applications.

Latest Patents

Kageyama's latest patents focus on innovative methods for audio recompression. One notable patent involves a technique for compressing sampled sound data using vector quantization, which is then transmitted via communication lines. The received sound data is decoded and compressed with an ADPCM technique before being stored in memory. This process allows for high-quality sound reproduction in karaoke devices, where both MIDI-form music performance data and vector-quantized sound data are utilized simultaneously. Another patent describes a karaoke apparatus that alternately drives multiple sound sources, ensuring seamless transitions between different karaoke music pieces. This system enhances the user experience by providing continuous playback without interruptions.

Career Highlights

Kageyama has spent a significant portion of his career at Yamaha Corporation, a leading company in musical instruments and audio equipment. His work has not only advanced the technology behind karaoke systems but has also influenced the development of sound systems in gaming devices. His innovative approaches have set new standards in audio quality and performance.

Collaborations

Throughout his career, Kageyama has collaborated with talented individuals such as Takeshi Funada and Junichi Fujimori. These collaborations have fostered a creative environment that has led to groundbreaking advancements in audio technology.

Conclusion

Yasuo Kageyama's contributions to audio technology, particularly in karaoke and gaming, have established him as a key figure in the industry. His innovative patents and collaborations continue to influence the way sound is experienced today.

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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