18 IP A research on virtual window connection method of remote spaces in IP communication environment

18 IP A research on virtual window connection method of remote spaces in IP communication environment 1070432 2007 3 9

IP, 1 1,,,,,,,,, x, y, z RFIDRadio Frequency Identification RFID, RFID, RFID z, 35m RFID,, RFID i

150cm, 0cm1414cm, z 0cm10cm RFID ii

Abstract A research on virtual window connection method of remote spaces in IP communication environment Shingo NISHIZAKI The current video chat systems assume to support mainly 1 person to 1 person communication They do not aim of the plural spaces communication In this paper, the communication function which puts the communication from a space to another space is given to a user The communication between spaces should afford the users a smooth and natural connection An virtual feeling of contiguity should be also given to the system The proposed system takes a metaphor of the window in the real world This system has a virtual window which a similar view as an actual window is given for the user The other party space connected is projected onto a virtual window In order to control a display, a user s position information is required for the connection system Forthis perpose, user s specific position detection was studied A user s 3-dimensional coordinates (x, y, z axis) are required for this system A RFID (Radio Frequency Identification) system is used for measurement of a user s 3-dimensional coordinates The observer possesses his own RFID tag And the RFID tag readers/writers are laid out at the crossing points of lattices horizontally arranged so that they covers the space ever when the observer moves A cell map is obtained from the RFID measurement It is processed using the gravity center calculation method As a result, user s position is identified in two dimension coordinates The, coordinates on z axis iii

are identified by measuring electromagnetic propagation strength from the RFID tags In this research, the positional identification method was verified by using active type RFID tag of maximum reading distance 35m Consequently, as for the position identification on 2-dimensional coordinates, in the case of 150cm arrangement interval of RFID tag readers/writers, the accuracy error was acquired from 0 to 1414cm The presumed accuracy on z axis coordinates is 0cm to 10cm key words VirtualWindow, RFID and Position detection iv

1 1 11 1 12 2 13 2 2 3 21 3 22 3 23 3 24 4 25 4 26 5 27 6 28 7 3 9 31 9 32 LAN 9 33 10 34 GPS 10 35 RFID 11 36 12 37 13 4 RFID 15 v

41 15 42 RFID 15 421 RFID 16 43 17 44 18 45 19 451 RFID 19 452 RFID 19 453 RFID 20 46 21 47 22 5 25 51 25 52 RFID 25 53 27 54 28 55 29 56 30 6 31 61 32 33 35 A 37 vi

21 5 22 6 41 16 42 RFID 18 43 RFID 20 44 RFID 20 45 RFID 21 46 22 47 22 51 28 52 29 A1 37 vii

31 12 51 28 ix

1 11,,,,,, Apple ichat AV[14] Micorosoft Windows Live Messenger[15],,, 1 1, [2],,,,,, [1],,, 1 1,, 1

1 12 11,,,,,,,,, 13, 2 3,,, RFID 4,, 5,, 6 2

2 21,,,,, 22,,,,,,, 23,,, 3

2, 1 1,,,, 24,,,,,,, 25,,,,,,,,, 4

26,,,,, 21 21 26,,, IP,, 22, 5

2, 22,, 22,, 22,,, 22, 22 27 26, 21 x, y,,, 21 - z, 26, 30fps, cm,,, 6

28, cm,,, 28, 7

3 31,, LAN,, GPS Global Positioning System, RFIDRadio Frequency Identification 32 LAN LAN, AirLocation T M [11],, IEEE80211b/a LAN,, TDOA, 1m3m, 10msec,, x, y,,,, x, y, 9

3 z 33,,,,,, ALTAIR [10], PC PDA, IRInfra-Red,,, IR,, 9cm30cm, 4 x, y 9cm30cm, 4,, x, y, z,,,, 34 GPS GPS, x, y, 24 3, 4 10

35 RFID, x, y, z, m,,, GPS 10m 15m, 1 GPS,, 1,, 4,,, 35 RFID RFID, RFID RFID, RFID, RFID RFID, RFID,, RFID,,, RFID, RFID,, NTT NIRE [12], RFID RFID 11

3, 32 LAN, RFID,,, LAN GPS, RFID,, RFID, RFID [7], RFID,, 10msec 36, RFID, RFID,,, RFID,, RFID, 31 31 LAN 13m 10msec X Y 930cm 4 X Y GPS 10m/15m 1 X Y Z RFID 0cm 10msec X Y Z 12

37 37,, RFID 13

4 RFID 41, 42 RFID, RFID, RFID RFID RFID,, z, RFID RFID RFID RFID RFID, RFID 45 RFID 41 15

4 RFID 41 421 RFID RFID 245GHz RFID RFID 35m RFID RFID RFID RFID 245GHz,, 135kHz 1356MHz, UHF, 5m,, 245GHz 16

43 RFID, RFID, RFID RFID,,, RFID, 30 RFID 35m RFID,,,, 35m RFID RFID, 43, RFID,, 42, RFID, RFID 42, x, y x, y (i, j) g[i][j], x n m, y n m (Gi, Gj), [ Gi Gj ] = 1 w m i=n j=n [ m i g[i][j] j ] (41) w 17

4 RFID y p p y x x RFID RFID 42 RFID m m w = i=n j=n (42) 42, y (2+3+1+2+3+4+2+3)/8, x (2+1+2+3+1+2+3+2)/8 (225), RFID, 44 RFID, RFID RFID, RFID RFID, RFID, RFID RFID 18

45 45, RFID 451 RFID RFID, 35, RFID RFID,,, RFID, RFID,,, RFID, RFID RFID, RFID, 15m, RFID,, RFID, RFID 452 RFID 24, RFID,,, 145cm200cm,, RFID 19

4 RFID 453 RFID RFID, 43, 44, 45 43 RFID 44 RFID,, RFID RFID, RFID,,, RFID 20

46 45 RFID,,,, 46, 46,,,, RFID, RFID 5,,, RFID RFID, RFID, 47 RFID RFID, RFID,,,, 21

4 RFID 46 47,, 47, RFID RFID x, y, 22

47 RFID, RFID, RFID, RFID RFID, 23

5 51, 52 RFID, RFID 245GHz RFID RFID 35m RFID RFID RFID RFID,, RFID, RFID, RFID, RFID 25

5,,,, RFID, RFID 35m, RFID, RFID,,, RFID RFID,, RFID 245GHz RFID RFID 80cm90cm RFID RFID RFID RFID, RFID, R3267 RFID, RZ3TG1, RFID 4 RZ1TR4 RFID, 2 RZ1AT4A 26

53 53, RFID, RFID, RFID,, RFID, RFID, 51, RFID 150cm, 35m, RFID, RFID RFID 4, 4, RFID 41, 41, 01, 01, 51, 141421356cm 51, r,, x, y r = y y 1 x 1+( y x )2 (51), RFID,, RFID, 51, RFID 100cm 150cm,, 27

5 51 51 200cm 150cm 100cm 0cm 0cm 0cm 565685424cm 141421356cm 221687231cm 100cm 75cm 50cm 4343% 8114% 5566% 54,, 70cm100cm, RFID RFID, 1cm, 100, 28

55,, 52 52,, RFID,, 10cm 55, 0cm, RFID,, 51, 100cm 150cm,,,,,, RFID 29

5, 421 RFID,, RFID, RFID 56, RFID, RFID,,,, 30

6,,,,,,, LAN,, GPS, RFID,, RFID, RFID, RFID,,, RFID,,,, 31

6 61, 1, 1 1,,,,,,, 1, 32

,,,, 1, 2,,, 33

[1],,,, Virtual Window,, p170, 2006 [2] Shingo NISHIZAKI, Takahiro SAKAMAKI, Takumi YAMAGUCHI and Kazunori SHIMAMURA, A study of Virtual Window system with connects the remote spaces, NEINE 06 pp240-243, 2006 [3],,,, RFID,, 2005 [4] Naoaki Horie, Syota Takahashi and Kazunori Shimamura, A Commnication quality improvement of passiv type RFID tag, NEINE 05, 2005 [5],,,,, 25GHz RFID,, 2004 [6] Akamatsu Jin, Syota Takahashi and Kazunori Shimamura, A Basic study on Communication Capabilly of 245GHz Band REID Tag and Communication quality with a reader, NEINE 04, 2004 [7], RFID, 00-HI-88, 2000512, pp45-50, 2000 [8],,,,,,, 2005 10 204 Vol72 No4, 2005 [9],,, RFID, RFID NTT COMWARE TECHNOLOGY 2004, p12 [10], ALTAIR:,, NAIST-IS- MT0151046, 2003 2 7 35

[11], LAN - -,,, (DICOMO2003), pp569-572 [12] NTT, RFID NIRE NIRE, http://wwwntt-atcojp/news/2006/release20html, 2006 3 30 [13] Copyright IBM Corporation, RFID and Wireless Solution Center / RFID Solution Laboratory, RFID Solution Services Offering 2006 [14] Copyright 2007 Apple Inc All rights reserved Apple - Mac OS X - ichat AV-, http://wwwwatchimpresscojp/av/docs/20070215/yamahahtm, 2007 [15] (C)2007 Microsoft, Windows Live, http://messengerlivejp/, 2007 36

A, 1, 1 1,,, A1, 4 A1 37