公开(公告)号：JP2006324870A

公开(公告)日：2006-11-30

申请号：JP2005145337

申请日：2005-05-18

Applicant: DOSHISHA ,  ATR ADVANCED TELECOMM RES INST

Inventor： SASAOKA SHUICHI ,  AONO TOMOYUKI ,  HIGUCHI KEISUKE ,  ITO TAKASHI ,  TAROUMARU MAKOTO

IPC: H04L9/08

Abstract: PROBLEM TO BE SOLVED: To provide a radio communication system in which tapping of a private key can be suppressed. SOLUTION: A radio device 10 and an antenna 11 are built in the mouse 60 of a personal computer and in this state, (n) radio waves are sent and received between radio devices 10 and 30 while the directivity of an array antenna 20 is switched to (n) directivities. The radio device 10 detects (n) first radio wave intensities corresponding to the (n) first radio waves received from the radio device 30 and generates a private key Ks1 composed of a bit series on the basis of the (n) detected first radio wave intensities. Further, the radio device 30 detects (n) second radio wave intensities corresponding to the (n) second radio waves received from the radio device 10 and generates a private key Ks2 composed of the same bit series with the private key Ks1 on the basis of the (n) detected second radio wave intensities. COPYRIGHT: (C)2007,JPO&INPIT

公开(公告)号：JP2002196780A

公开(公告)日：2002-07-12

申请号：JP2000395001

申请日：2000-12-26

Applicant: ATR ADVANCED TELECOMM RES INST

Inventor： MITSUYA EIJI ,  DABIN PATRICK ,  TAGAWA HIROAKI ,  KOKIDO SHINGO ,  YAMAGUCHI TAKESHI ,  ITO TAKASHI

IPC: G06F3/16 ,  G10L13/06 ,  G10L13/08

Abstract: PROBLEM TO BE SOLVED: To provide a novel communication system utilizing a speech synthesis method. SOLUTION: A signal transmission side apparatus has means for predicting meter parameters of phoneme series corresponding to inputted text and retrieving the combinations of the phoneme units to minimize the distortion when the phoneme units nearest the predicted meter patterns and accumulated in a speech waveform data base are connected and means for forming the waveform connection data consisting of the index information corresponding to the combinations of the retrieved phoneme units and sending the data to a signal reception side apparatus.

公开(公告)号：JP2006352206A

公开(公告)日：2006-12-28

申请号：JP2005171976

申请日：2005-06-13

Applicant: ATR ADVANCED TELECOMM RES INST

Inventor： TAROUMARU MAKOTO ,  OHIRA TAKASHI ,  ITO TAKASHI ,  YAMAMOTO MAKOTO ,  SAWATANI TAKUMA

IPC: H01Q3/44 ,  H01Q19/28

Abstract: PROBLEM TO BE SOLVED: To provide an array antenna system capable of easily improving bad display of a television receiver or hard-of-hearing of a radio receiver. SOLUTION: The array antenna system 100 includes an array antenna 10 and a control unit 20. The array antenna 10 includes a feeding element 2, parasitic elements 3, 4 and varactor diodes 6 to 9. The varactor diodes 6, 7 are loaded to the parasitic element 3, and the varactor diodes 8, 9 are loaded to the parasitic element 4. The control unit 20 includes a solar cell 22 and a control unit 23. The solar cell 22 receives light from a fluorescent light in a room to generate power, and the control unit 23 is started by a DC power from the solar cell 22. Upon the receipt of a particular signal from a remote controller 40, the control unit 23 applies control voltages CV1 to CV4 respectively to the varactor diodes 6 to 9 via control lines 12 to 15 to switch the directivity of the array antenna 10. COPYRIGHT: (C)2007,JPO&INPIT