Inventor · disambiguated record
Atsufumi Shibayama
Also filed as: SHIBAYAMA ATSUFUMI
40 granted patents·12 pending applications·459 citations·filing 1998–2025
97Inventor score
Top patents by PatentIndex Score
52 records- 0194US6970997B2Processor, multiprocessor system and method for speculatively executing memory operations using memory target addresses of the memory operations to index into a speculative execution result history storage means to predict the outcome of the memory operationNEC CORP·Filed 2002·Granted Nov 29, 2005·114 cites·24 claims
- 0285US7082601B2Multi-thread execution method and parallel processor systemNEC CORP·Filed 2002·Granted Jul 25, 2006·47 cites·16 claims
- 0384US8422619B2Clock frequency divider circuit, clock distribution circuit, clock frequency division method, and clock distribution methodSHIBAYAMA ATSUFUMI·Filed 2009·Granted Apr 16, 2013·11 cites·11 claims
- 0483US6111448AClock signal distribution circuitNEC CORP·Filed 1998·Granted Aug 29, 2000·107 cites·26 claims
- 0583US2025054208A1Processing apparatus, system, biometric authentication system, processing method, and computer readable mediumNEC CORP·Filed 2024·Application pending·0 cites
- 0683US2025045985A1Processing apparatus, system, biometric authentication system, processing method, and computer readable mediumNEC CORP·Filed 2024·Application pending·0 cites
- 0782US7418583B2Data dependency detection using history table of entry number hashed from memory addressNEC CORP·Filed 2005·Granted Aug 26, 2008·12 cites·22 claims
- 0881US9281801B2Digital filter circuit and digital filter control methodSHIBAYAMA ATSUFUMI·Filed 2011·Granted Mar 8, 2016·6 cites·7 claims
- 0980US9519457B2Arithmetic processing apparatus and an arithmetic processing methodSHIBAYAMA ATSUFUMI·Filed 2011·Granted Dec 13, 2016·6 cites·7 claims
- 1079US8369477B2Clock frequency divider circuit and clock frequency division methodNEC CORP·Filed 2009·Granted Feb 5, 2013·9 cites·16 claims
- 1177US8253450B2Clock signal frequency dividing circuit and methodSHIBAYAMA ATSUFUMI·Filed 2009·Granted Aug 28, 2012·8 cites·16 claims
- 1276US8629703B2Clock frequency divider circuit, clock distribution circuit, clock frequency division method, and clock distribution methodSHIBAYAMA ATSUFUMI·Filed 2013·Granted Jan 14, 2014·3 cites·4 claims
- 1376US8081017B2Clock signal frequency dividing circuit and clock signal frequency dividing methodSHIBAYAMA ATSUFUMI·Filed 2007·Granted Dec 20, 2011·8 cites·5 claims
- 1476US6346837B1Digital delay-locked loop circuit having two kinds of variable delay circuitsNEC CORP·Filed 1998·Granted Feb 12, 2002·42 cites·22 claims
- 1573US7702945B2Semiconductor device and communication control methodNEC CORP·Filed 2005·Granted Apr 20, 2010·5 cites·18 claims
- 1673US6931514B2Data dependency detection using history table of entry number hashed from memory addressNEC CORP·Filed 2001·Granted Aug 16, 2005·17 cites·55 claims
- 1769US12498753B2Processing device, processing system, and processing methodNEC CORP·Filed 2024·Granted Dec 16, 2025·0 cites·18 claims
- 1869US7893742B2Clock signal dividing circuitNEC CORP·Filed 2007·Granted Feb 22, 2011·4 cites·12 claims
- 1969US6950908B2Speculative cache memory control method and multi-processor systemNEC CORP·Filed 2002·Granted Sep 27, 2005·15 cites·18 claims
- 2068US8850256B2Communication circuit and communication methodSHIBAYAMA ATSUFUMI·Filed 2010·Granted Sep 30, 2014·2 cites·14 claims
- 2167US8525567B2Pipeline circuit, semiconductor device, and pipeline control methodSHIBAYAMA ATSUFUMI·Filed 2010·Granted Sep 3, 2013·2 cites·12 claims
- 2264US8635040B2Signal measuring device and signal measuring methodNOSE KOICHI·Filed 2007·Granted Jan 21, 2014·4 cites·18 claims
- 2361US7533375B2Program parallelization device, program parallelization method, and program parallelization programNEC CORP·Filed 2004·Granted May 12, 2009·11 cites·22 claims
- 2461US6678789B2Memory deviceNEC CORP·Filed 2001·Granted Jan 13, 2004·11 cites·2 claims
- 2560US8564336B2Clock frequency divider circuit and clock frequency division methodSHIBAYAMA ATSUFUMI·Filed 2009·Granted Oct 22, 2013·3 cites·10 claims
- 2660US6320420B1Domino logic element realizing high speed dynamic logic circuitNEC CORP·Filed 2000·Granted Nov 20, 2001·9 cites·20 claims
- 2758US2022277498A1Processing apparatus, system, biometric authentication system, processing method, and computer readable mediumNEC CORP·Filed 2019·Application pending·0 cites
- 2857US9785614B2Fast Fourier transform device, fast Fourier transform method, and recording medium storing fast Fourier transform programNEC CORP·Filed 2014·Granted Oct 10, 2017·1 cites·9 claims
- 2957US8862647B2Semiconductor integrated circuit and exponent calculation methodSHIBAYAMA ATSUFUMI·Filed 2011·Granted Oct 14, 2014·2 cites·11 claims
- 3056US2025245005A1Signal processing apparatus and methodNEC CORP·Filed 2025·Application pending·0 cites
- 3154US9952648B2Digital filtering device, digital filtering method, and storage media storing programNEC CORP·Filed 2014·Granted Apr 24, 2018·0 cites·7 claims
- 3253US11417144B2Processing apparatus, fingerprint image extraction processing apparatus, system, processing method, and computer readable mediumNEC CORP·Filed 2019·Granted Aug 16, 2022·0 cites·11 claims
- 3353US2024275388A1Clock signal frequency divider, processing system, processing device, and clock signal frequency dividing methodNEC CORP·Filed 2024·Application pending·0 cites
- 3453US2023289397A1Fast fourier transform device, digital filtering device, fast fourier transform method, and non-transitory computer-readable mediumNEC CORP·Filed 2023·Application pending·0 cites
- 3550US9880975B2Digital filter device, digital filter processing method, and storage medium having digital filter program stored thereonNEC CORP·Filed 2014·Granted Jan 30, 2018·0 cites·6 claims
- 3650US2022309123A1Fast fourier transform device and digital filter deviceNEC CORP·Filed 2022·Application pending·0 cites
- 3749US8576967B2Semiconductor device and communication methodSHIBAYAMA ATSUFUMI·Filed 2009·Granted Nov 5, 2013·0 cites·12 claims
- 3849US2016357706A1Fast fourier transform device, fast fourier transform method, and storage medium having fast fourier transform program stored thereonNEC CORP·Filed 2014·Application pending·0 cites
- 3948US9934199B2Digital filter device, digital filtering method, and storage medium having digital filter program stored thereonNEC CORP·Filed 2014·Granted Apr 3, 2018·0 cites·11 claims
- 4048US2023273010A1Optical coherence tomography deviceNEC CORP·Filed 2020·Application pending·0 cites
- 4147US12474859B2Digital filter device, operation method for digital filter device, and non-transitory computer-readable medium storing programNEC CORP·Filed 2020·Granted Nov 18, 2025·0 cites·6 claims
- 4247US10855255B2Digital filter, filter processing method, and recording mediumNEC CORP·Filed 2016·Granted Dec 1, 2020·0 cites·10 claims
- 4346US11604852B2Signal processing apparatus, method, program, and recording mediumNEC CORP·Filed 2018·Granted Mar 14, 2023·0 cites·4 claims
- 4446US2023082433A1Digital filter deviceNEC CORP·Filed 2021·Application pending·0 cites
- 4545US2022214156A1Optical coherence tomography apparatus, imaging method, and non-transitory computer readable medium storing imaging programNEC CORP·Filed 2019·Application pending·0 cites
- 4644US2020372095A1Fast fourier transform device, data sorting processing device, fast fourier transform processing method, and program recording mediumNEC CORP·Filed 2018·Application pending·0 cites
- 4743US9571066B2Digital filter circuit, digital filter processing method and digital filter processing program storage mediumNEC CORP·Filed 2013·Granted Feb 14, 2017·0 cites·8 claims
- 4842US10853445B2Digital filter device, digital filtering method, and program recording mediumNEC CORP·Filed 2017·Granted Dec 1, 2020·0 cites·6 claims
- 4941US9509282B2Digital filter circuit and digital filter processing methodSHIBAYAMA ATSUFUMI·Filed 2012·Granted Nov 29, 2016·0 cites·9 claims
- 5038US12019700B2Signal processing apparatus, method, program, and recording mediumNEC CORP·Filed 2019·Granted Jun 25, 2024·0 cites·10 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →