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For the Inventor, By the Inventor

Kawasaki, Japan

Kazuhiko Hatae

USPTO Granted Patents = 14 

Average Co-Inventor Count = 3.2

ph-index = 2

Forward Citations = 13(Granted Patents)


Company Filing History:

goldMedal14 out of 39,228 
 
Fujitsu Corporation
 patents

Years Active: 2008-2021

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14 patents (USPTO):Explore Patents
1. 10931485 - Adaptive equalization circuit and optical receiver (2021-02-23),
2. 10560199 - Signal processing circuit and optical receiving device (2020-02-11),
3. 10177855 - Amplitude adjustment circuit, digital coherent receiver, and amplitude adjustment method (2019-01-08),
4. 9680667 - Adaptive equalization circuit, digital coherent receiver, and adaptive equalization method (2017-06-13),
5. 9660733 - Signal processing apparatus, signal processing method, and signal processing system (2017-05-23),
6. 9496966 - Optical communication receiving device and frequency offset compensation method (2016-11-15),
7. 9401765 - Frequency offset estimation circuit and frequency offset estimation method (2016-07-26),
8. 9374170 - Optical receiving device (2016-06-21),
9. 8693898 - Adaptive equalizer, optical receiver, and tap coefficient correcting method (2014-04-08),
10. 8677296 - Circuit design support computer product, method, and apparatus (2014-03-18),
11. 8606118 - Optical digital coherent receiver (2013-12-10),
12. 8392485 - Signal waveform generating circuit and method (2013-03-05),
13. 7649482 - Signal modulation method, signal modulation apparatus, electronic device, and computer program product (2010-01-19),
14. 7417792 - Optical amplification device (2008-08-26),

Title: Kazuhiko Hatae: Innovator in Signal Processing Technology

Introduction

Kazuhiko Hatae is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of signal processing, holding a total of 14 patents. His work focuses on developing advanced technologies that enhance the performance of optical receivers and signal processing circuits.

Latest Patents

Hatae's latest patents include an adaptive equalization circuit and an optical receiver. The adaptive equalization circuit features a first filter that performs filtering on an input signal based on a tap coefficient. It also includes an applying circuit that applies noise outside the signal's band and a controller that sets the tap coefficient to compensate for transmission line characteristics. Another notable patent is a signal processing circuit that adjusts phases of reception samples according to a phase adjustment amount. This circuit utilizes a finite impulse response (FIR) filter to process reception samples and output symbols at different intervals.

Career Highlights

Kazuhiko Hatae is currently employed at Fujitsu Corporation, where he continues to innovate in the field of signal processing. His work has been instrumental in advancing technologies that are crucial for modern communication systems.

Collaborations

Hatae has collaborated with notable colleagues, including Nobukazu Koizumi and Masashi Sato. Their combined expertise has contributed to the successful development of various technologies in the field.

Conclusion

Kazuhiko Hatae's contributions to signal processing technology have established him as a leading inventor in his field. His innovative patents and collaborations continue to influence advancements in optical communication systems.

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