Inventor
SAGAWA HIROHIKO
JP15 patents
⚠️ This page may combine multiple inventors who share the name “SAGAWA HIROHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
13 patentsUS5887069AMar 23, 1999
Sign recognition apparatus and method and sign translation system using same
HITACHI LTD151 citations99
US5699441ADec 16, 1997
Continuous sign-language recognition apparatus and input apparatus
HITACHI LTD164 citations99
US5544050AAug 6, 1996
Sign language learning system and method
HITACHI LTD152 citations99
US6477239B1Nov 5, 2002
Sign language telephone device
HITACHI LTD217 citations98
US6181778B1Jan 30, 2001
Chronological telephone system
HITACHI LTD162 citations98
US5953693ASep 14, 1999
Sign language generation apparatus and sign language translation apparatus
HITACHI LTD121 citations98
US5659764AAug 19, 1997
Sign language generation apparatus and sign language translation apparatus
HITACHI LTD140 citations98
US5990878ANov 23, 1999
Sign language editing apparatus
HITACHI LTD94 citations97
US5734923AMar 31, 1998
Apparatus for interactively editing and outputting sign language information using graphical user interface
HITACHI LTD153 citations97
US5481454AJan 2, 1996
Sign language/word translation system
HITACHI LTD63 citations96
US5473705ADec 5, 1995
Sign language translation system and method that includes analysis of dependence relationships between successive words
HITACHI LTD57 citations93
US6549887B1Apr 15, 2003
Apparatus capable of processing sign language information
HITACHI LTD35 citations92
US11835412B2Dec 5, 2023
Delicate work tool digitalization system
HITACHI LTD0 citations44