Inventor
HOTTA MASAO
JP31 patents
⚠️ This page may combine multiple inventors who share the name “HOTTA MASAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
19 patentsUS6492872B1Dec 10, 2002
High frequency power amplifying module and wireless communication apparatus
HITACHI LTD68 citations96
US5794201AAug 11, 1998
Digital acoustic signal processing apparatus
HITACHI LTD57 citations96
US5623533AApr 22, 1997
Mobile communication end device with low power operation mode
HITACHI LTD66 citations96
US4875048AOct 17, 1989
Two-step parallel analog to digital converter
HITACHI LTD88 citations96
US4389711AJun 21, 1983
Touch sensitive tablet using force detection
HITACHI LTD100 citations95
US6226605B1May 1, 2001
Digital voice processing apparatus providing frequency characteristic processing and/or time scale expansion
HITACHI LTD30 citations92
US5519398AMay 21, 1996
Signal processing apparatus having A/D conversion function
HITACHI LTD21 citations92
US4978957ADec 18, 1990
High-speed analog-to-digital converter
HITACHI LTD44 citations92
US4752766AJun 21, 1988
Analog to digital converter
HITACHI LTD27 citations92
US4381495AApr 26, 1983
Digital-to-analog converter with error compensation
HITACHI LTD34 citations90
US4939518AJul 3, 1990
Analog to digital converter
HITACHI LTD20 citations79
US5966407AOct 12, 1999
Bus driving system and integrated circuit device using the same
HITACHI LTD12 citations74
US4916653AApr 10, 1990
Adder using multi-state logic
HITACHI LTD8 citations74
US4851845AJul 25, 1989
Encoder
HITACHI LTD8 citations74
US5291135AMar 1, 1994
Weak magnetic field measuring system using dc-SQUID magnetometer with bias current adjustment and/or detecting function of abnormal operation
HITACHI LTD19 citations70
US5138203AAug 11, 1992
Integrated circuit compensation for losses in signal lines due to parasitics
HITACHI LTD5 citations63
US4866444ASep 12, 1989
Analog-to-digital converter
HITACHI LTD5 citations63
US4752767AJun 21, 1988
DA converter
HITACHI LTD5 citations63
US4549166AOct 22, 1985
Digital-to-analog converter using a feedback element matching technique
HITACHI LTD5 citations60