Inventor
TAKAHARA KEIKO
JP16 patents
Patents
16 patentsUS5604737AFeb 18, 1997
Voice communication system and voice communication method
HITACHI LTD517 citations99
US5528284AJun 18, 1996
Video communication method having refresh function of coding sequence and terminal devices thereof
HITACHI LTD230 citations99
US6078583AJun 20, 2000
Communication method and communication system
HITACHI LTD193 citations98
US5905495AMay 18, 1999
Communication system using electronic mail
HITACHI LTD96 citations98
US5477542ADec 19, 1995
Method and appartus for controlling multimedia information communication
HITACHI LTD120 citations98
US6240085B1May 29, 2001
Voice communication system and voice communication method
HITACHI LTD43 citations96
US5856825AJan 5, 1999
Image voice synchronized multimedia mail system and method thereof
HITACHI LTD39 citations92
US7167467B2Jan 23, 2007
Voice communication system and voice communication method
HITACHI LTD4 citations74
US5832217ANov 3, 1998
Communication system distributing packets according to commands acquired form packets and filtering real time requests from the accepted requests and processing the realtime requests selected by the filter
HITACHI LTD5 citations63
US7920550B2Apr 5, 2011
Voice communication system and voice communication method
HITACHI LTD0 citations52
US7808976B2Oct 5, 2010
Voice communication system and voice communication method
HITACHI LTD0 citations52
US7756117B2Jul 13, 2010
Voice communication system and voice communication method
HITACHI LTD0 citations52
US7738447B2Jun 15, 2010
Voice communication system and voice communication method
HITACHI LTD0 citations52
US7724729B2May 25, 2010
Voice communication system and voice communication method
HITACHI LTD0 citations52
US7724730B2May 25, 2010
Voice communication system and voice communication method
HITACHI LTD0 citations52
US7502363B2Mar 10, 2009
Voice communication system and voice communication method
HITACHI LTD0 citations52