Inventor
AOTSU HIROAKI
JP43 patents
⚠️ This page may combine multiple inventors who share the name “AOTSU HIROAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
42 patentsUS5838337ANov 17, 1998
Graphic system including a plurality of one chip semiconductor integrated circuit devices for displaying pixel data on a graphic display
HITACHI LTD60 citations96
US4954818ASep 4, 1990
Multi-window display control system
HITACHI LTD107 citations96
US4757473AJul 12, 1988
Memory circuit
HITACHI LTD57 citations96
US5347643ASep 13, 1994
Bus system for coordinating internal and external direct memory access controllers
HITACHI LTD96 citations94
US4245182AJan 13, 1981
Excitation control apparatus for a generator
HITACHI LTD121 citations94
US5265204ANov 23, 1993
Method and apparatus for bit operational process
HITACHI LTD36 citations93
US4868781ASep 19, 1989
Memory circuit for graphic images
HITACHI LTD24 citations90
US5767864AJun 16, 1998
One chip semiconductor integrated circuit device for displaying pixel data on a graphic display
HITACHI LTD15 citations82
US5523973AJun 4, 1996
Memory device
HITACHI LTD13 citations82
US5424981AJun 13, 1995
Memory device
HITACHI LTD11 citations82
US4438385AMar 20, 1984
Automatic voltage regulation system for AC generator
HITACHI LTD21 citations82
US4326159AApr 20, 1982
Method and apparatus for controlling excitation of a generator
HITACHI LTD27 citations78
US6643189B2Nov 4, 2003
Memory device
HITACHI LTD4 citations74
US6552730B1Apr 22, 2003
Method and apparatus for bit operational process
HITACHI LTD6 citations74
US6437790B1Aug 20, 2002
Apparatus for bit operational process
HITACHI LTD10 citations74
US6028795AFeb 22, 2000
One chip semiconductor integrated circuit device having two modes of data write operation and bits setting operation
HITACHI LTD10 citations74
US5781479AJul 14, 1998
Memory device
HITACHI LTD3 citations74
US5719809AFeb 17, 1998
Memory device
HITACHI LTD4 citations74
US5450342ASep 12, 1995
Memory device
HITACHI LTD3 citations74
US5265234ANov 23, 1993
Integrated memory circuit and function unit with selective storage of logic functions
HITACHI LTD10 citations74
US5175816ADec 29, 1992
Method and apparatus for bit operational process
HITACHI LTD7 citations74
US5175838ADec 29, 1992
Memory circuit formed on integrated circuit device and having programmable function
HITACHI LTD12 citations74
US5048101ASep 10, 1991
Electronic filing device
HITACHI LTD16 citations74
US5034900AJul 23, 1991
Method and apparatus for bit operational process
HITACHI LTD9 citations74
US5276818AJan 4, 1994
Bus system for information processing system and method of controlling the same
HITACHI LTD17 citations73
US4849907AJul 18, 1989
Draw processing method and apparatus
HITACHI LTD15 citations71
US5457602AOct 10, 1995
Desk-top information processing apparatus having a height greater than its front surface width, a first leg with a cut-out for cooling air, and a second leg with non-aligned ends
HITACHI LTD12 citations67
US5923591AJul 13, 1999
Memory circuit
HITACHI LTD5 citations63
US5615155AMar 25, 1997
Memory device
HITACHI LTD1 citations63
US5548744AAug 20, 1996
Memory circuit and method for setting an operation mode
HITACHI LTD3 citations63
US5448519ASep 5, 1995
Memory device
HITACHI LTD1 citations63
US5113487AMay 12, 1992
Memory circuit with logic functions
HITACHI LTD4 citations63
US3956637AMay 11, 1976
Intercept valve controlling method and system for use in a heat power plant
HITACHI LTD6 citations62
US6359812B2Mar 19, 2002
Memory device
HITACHI LTD0 citations52
US6198665B1Mar 6, 2001
One chip semiconductor integrated circuit device having two modes of data write operation and bits setting operation
HITACHI LTD0 citations52
US5617360AApr 1, 1997
Memory device
HITACHI LTD0 citations52
US5592649AJan 7, 1997
RAM control method and apparatus for presetting RAM access modes
HITACHI LTD1 citations52
US5499222AMar 12, 1996
Memory device
HITACHI LTD0 citations52
US5493528AFeb 20, 1996
Memory device
HITACHI LTD0 citations52
US5477486ADec 19, 1995
Memory device
HITACHI LTD0 citations52
US5475636ADec 12, 1995
Memory device
HITACHI LTD0 citations52
USRE34635EJun 7, 1994
Method and apparatus for bit operational process
HITACHI LTD0 citations52