Yasuaki SUMI


A Realization of Multiple Circuit Transfer Functions Using OTA-C Integrator Loop Structure
Takao TSUKUTANI Masami HIGASHIMURA Yasutomo KINUGASA Yasuaki SUMI Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/02/01
Vol. E86-A  No. 2  pp. 509-512
Type of Manuscript:  LETTER
Category: Analog Signal Processing
Keyword: 
operational transconductance amplifiersgrounded capacitorshigh-passband-stop and all-pass transfer functionscontinuous-time filter circuit
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Electronically Tunable Current-Mode Biquad Using OTAs and Grounded Capacitors
Takao TSUKUTANI Masami HIGASHIMURA Yasuaki SUMI Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2595-2599
Type of Manuscript:  LETTER
Category: Analog Signal Processing
Keyword: 
current-mode circuitoperational transconductance amplifierbiquad characteristicscontinuous-time filter circuit
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Improvement of Active Net Model for Region Detection in an Image
Noboru YABUKI Yoshitaka MATSUDA Makoto OTA Yasuaki SUMI Yutaka FUKUI Shigehiko MIKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/03/01
Vol. E84-A  No. 3  pp. 720-726
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 13th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
Active Netregion detectionenergy optimizationimage processing
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The Automatic Counting of Chlorella Using Image Processing and Neural Network
Yasuaki SUMI Makoto OTA Noboru YABUKI Shigeki OBOTE Yoshitaka MATSUDA Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/03/01
Vol. E84-A  No. 3  pp. 794-796
Type of Manuscript:  Special Section LETTER (Special Section of Selected Papers from the 13th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
chlorellacountingpattern recognitionneural networkback propagation
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Robust DSP Type Squaring Loop with Adaptive Notch Filter Type Frequency Estimator and Adaptive BPF
Shigeki OBOTE Yasuaki SUMI Yoshio ITOH Yutaka FUKUI Masaki KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 441-448
Type of Manuscript:  Special Section PAPER (Special Section on Noise Cancellation and Reduction Techniques)
Category: Narrow-Band Interference Cancellation
Keyword: 
squaring loopcoherent detectionBPSKadaptive notch filterfrequency estimator
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PLL Frequency Synthesizer with Binary Phase Comparison
Shigeki OBOTE Yasuaki SUMI Naoki KITAI Yutaka FUKUI Yoshio ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/03/25
Vol. E83-A  No. 3  pp. 427-434
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 12th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
PLL frequency synthesizerbinary phase comparison
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Prescaler PLL Frequency Synthesizer with Multi-Programmable Divider
Yasuaki SUMI Shigeki OBOTE Naoki KITAI Hidekazu ISHII Ryousuke FURUHASHI Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/03/25
Vol. E83-A  No. 3  pp. 421-426
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 12th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
PLL frequency synthesizerprescalermulti-programmable divider(N+1/2) programmable divider
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PLL Frequency Synthesizer with Multi-Phase Detector
Yasuaki SUMI Kouichi SYOUBU Shigeki OBOTE Yutaka FUKUI Yoshio ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/03/25
Vol. E82-A  No. 3  pp. 431-435
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 11th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
PLL frequency synthesizermulti-phase detectorspeedup of lock up time
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Speedup of Frequency Switching Time in PLL Frequency Synthesizers Using a Target Frequency Detector
Shigeki OBOTE Yasuaki SUMI Naoki KITAI Kouichi SYOUBU Yutaka FUKUI Yoshio ITOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/03/25
Vol. E82-A  No. 3  pp. 436-441
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 11th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
PLL frequency synthesizertarget frequency detectorfast frequency switching
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PLL Frequency Synthesizer for Low Power Consumption
Yasuaki SUMI Kouichi SYOUBU Kazutoshi TSUDA Shigeki OBOTE Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/03/25
Vol. E80-A  No. 3  pp. 461-465
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 9th Karuizawa Workshop on Circuits and Systems)
Category: 
Keyword: 
low power consumptionPLL frequency synthesizerfrequency extenderprogrammable divideroperating frequencyprescaler
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