Exhibit 1007
`Exhibit 1007
`
`

`
`(19) United States
`(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2001/0012051 A1
`(12) Patent Application Publication (10) Pub. No.: US 2001/0012051 A1
`(43) Pub. Date:
`Aug. 9, 2001
`Hara et al.
`Hara et al.
`(43) Pub. Date:
`Aug. 9, 2001
`
`US 20010012051A1
`US 20010012051A1
`
`METHOD FOR TRANSMITTING IMAGE
`(54)
`(54) METHOD FOR TRANSMITTING IMAGE
`DATA AND COMMUNICATION TERMINAL
`DATA AND COMMUNICATION TERMINAL
`
`(76)
`Inventors: Yoshihiro Hara, Osaka (JP); Yukio
`(76) Inventors: Yoshihiro Hara, Osaka (JP); Yukio
`Maekawa, Osaka (JP)
`Maekawa, Osaka (JP)
`
`Publication Classification
`Publication Classi?cation
`
`................................ .. H04N 7/14
`(51)
`Int. Cl.7 ..
`........................................ .. H04N 7/14
`(51) Int. Cl.7 .
`.............. ..
`48/14.01; 348/1412; 348/1402
`(52) U.S.Cl.
`(52) US. Cl. .............. .. 348/14.01; 348/1412; 348/1402
`
`Correspondence Address:
`Correspondence Address:
`Barry E. Bretschneider
`Barry E. Bretschneider
`Morrison & Foerster LLP
`Morrison & Foerster LLP
`Suite 5500
`Suite 5500
`-
`2000 Pennsylvania Avenue’ NW_
`2000 Pennsylvania Avenue, N.W.
`washington DC 20006 (Us)
`Washington, DC 20006 (US)
`’
`
`(21) APPL NO;
`Appl. No.:
`(21)
`
`09 /754’400
`09/754,400
`
`(22) Filed;
`(22)
`Filed:
`
`Jam 5, 2001
`Jan. 5, 2001
`
`(30)
`(30)
`
`Foreign Application Priority Data
`Foreign Application Priority Data
`
`Jan. 7, 2000
`(JP) ......................................... .. 2000-1250
`Jan. 7, 2000 (JP) ......................................... .. 2000-1250
`Jan. 7, 2000
`(JP) ......................................... .. 2000-1251
`Jan. 7, 2000 (JP) ......................................... .. 2000-1251
`
`(57)
`(57)
`
`ABSTRACT
`ABSTRACT
`
`_
`_
`_
`_
`_
`A communication terminal comprises a memory for storing
`A
`t
`t
`1
`p
`y f
`t
`g
`commumca 1on ermma com rises a memor or s orm
`a table in which data for identifying a destination of com-
`a table in Which data for identifying a destination of com
`munication and a resolution of a display device of the
`mumcation and a resolution of a display device of the
`destination are associated with each other, an image proces-
`destination are associated With each other, an image proces
`sor for generating image data with a resolution of the display
`sor for generating image data With a resolution of the display
`device of the destination based on the table, and a transmis-
`device of the destination based on the table, and a transmis
`sion section for transmitting the image data generated by the
`sion section for transmitting the image data generated by the
`image processor. By transmitting the image data with a
`image processor. By transmitting the image data With a
`resolution corresponding to the resolution of the display
`resolution corresponding to the resolution of the display
`device of the destination, data volume to be communicated
`device of the destination, data volume to be communicated
`is reduced and wasteful power consumption of battery is
`is reduced and Wasteful poWer consumption of battery is
`suppressed in portable devices.
`suppressed in portable devices.
`
`I_L PORTABLE TERMINAL
`I_l PORTABLE TERMINAL
`
`$
`
`~16 1
`
`62
`
`III’EIY
`
`EIE’EISZATION
`I
`
`I
`
`~s 3
`
`6
`
`O
`
`’
`
`ST
`~I:I CRT B 1
`SYSTEM CONTROL
`SYSTEM CONTROL
`SECTION
`SECTION
`
`I
`I
`
`I
`3 1
`
`n
`
`IMAGING
`ggigig?
`SENSOR
`3 2
`' ‘a 2
`
`~IIINNE
`
`IMAGING
`CONTROL
`SECTION
`SE TI N —’
`C 0
`IMAGING
`MEMORY
`
`3 4
`~s 4
`
`I
`
`IMAGING SECTION
`3 O
`IMAGING SECTION ~3 O
`
`—5 I
`
`6 5
`
`R F
`SECTION
`r6 4
`I
`VOICE AND IMAGE
`IMAGE
`MULTIPLEX/
`DEMULTIPLEX
`DEMULTIPLEX
`6
`VOICE
`CODEC
`
`IIIIIIIIIIII !
`
`!
`I
`
`IIIIIIIIIIIIII
`
`__
`
`DATA CONVERSION
`(COMPRESS/EXPAND)
`(53 % r5 2
`RESOLUTION
`IMAGE DATA
`VOICE
`CONVERSION
`CORRECTION
`I /O
`;| IMAGE DATA PROCESSING SECTION ~5 0
`6 7 MICROPHONE 6 8
`
`~6 6
`
`DISPLAY SECTION
`4 O
`DISPLAY SECTION ~4 o
`
`{42
`D I SPLAY
`DATA
`IIATIILAY _> L C D
`MEMORY
`MEM R
`0 Y
`\4 1
`
`
`
`

`
`Patent Application Publication
`
`Aug. 9, 2001
`
`Sheet 1 of 15 US 2001/0012051 A1
`
`EEEE
`§8:5 ESZE
`
`
`
`=mhm>mzo__<u_z==:ou_
`
`
`
`—.-w_H_
`
`
`
`
`
`“E3;_m§<,_<_2_s_E_z=_§8..L.BmM._
`
`
`

`
`Patent Application Publication
`
`Aug. 9, 2001
`
`Sheet 2 of 15 US 2001/0012051 A1
`
`am
`
`
`
`zo_Hommuz_o<=_
`
`Nm
`
`oz_c<=_
`
`zowzmw
`
`zo_h<¢m¢o
`
`m>mx
`
`
`
`gomhzou=mHm>w
`
`=¢_Humm
`
`_|||_3+m
`
`<h<omu<:_
`
`AQ=<mxm\mmu¢¢=ouv
`
`
`zo_mmm>zoo<H<n
`
`
`
`4<z_=¢mHw4m<Hmom
`
`N_
`
`>4m¢=mmmzmzom
`
`
`
`.|.|.I.I.l.l.l.......l.L%
`
`
`
`
`
`zo_hummu=_wmmu¢m¢<H<omu<:_
`
`
`
`wmm_,_2_._2a_=..D.é..
`
`
`
`
`
`
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 3 0f 15 US 2001/0012051 A1
`Sheet 3 of 15 US 2001/0012051 A1
`
`Fig- 3
`Fig-
`3
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 4 0f 15 US 2001/0012051 A1
`Sheet 4 of 15 US 2001/0012051 A1
`
`Fig. 4A
`
`=
`//
`%
`
`L3 4
`........................ .\
`H\__2L_
`
`, 5
`W
`
`4 F
`
`l
`
`%
`
`I
`
`%
`
`I: | g _
`
`4 B
`
`, . - . . . . . . . . . - . - . - . - - . . . - . . . - - . - . - . . - . . - - .‘
`
`
`2..::::::::::::::::;;--~-~..
`~
`
`
`
`
`'iiiiii
`
`
`
`
`
`IIIIIIII
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 5 0f 15 US 2001/0012051 Al
`Sheet 5 of 15 US 2001/0012051 A1
`
`F i g -
`F='
`i E; -
`
`5
`ES
`
`T B I
`T'B 1
`
`A R
`
`I
`
`ADDRESS
`06-6123-4567
`06-6123-4567
`06-6000-1 III
`06-6000-IIII
`
`K D
`
`If
`DISPLAY RESOLUTION
`300x240
`400x320
`
`I: | g .
`
`6
`
`(HD
`HEADER
`
`D T s
`(DTG
`‘ INACE DATA
`
`I: | g -
`1i
`
`7
`
`RESOLUTION
`
`F
`
`IMAGE CONvERSION SECTION
`7 SN
`7 5 a
`i /
`-
`RESOLUTION ’\~
`CONVERSION
`SECTION
`i
`SECTION
`7 4m DATA CONVERSION SECTION
`7 4 .
`DATA CONVERSION SECTION
`'
`
`
`
`"I
`:
` DISPLAY
`DISPLAY qJ 6
`RESOLUTION
`3EI%III"°
`5
`DETECTING
`SECTION
`I
`I
`
`!
`,~__T B 2
`I T'B 2
`I
`I
`I
`-
`MEMORY 1»? 7
`N N
`
`DISPLAY
`DISPLAY
`RESOLUTION
`REgIBIEUTION
`TABLE
`
`7 3
`7 3
`vOICE & INACE/‘T’
`VOICE
`IMA
`E m §rnEO :0-<
`NuLTIPLEx/
`r-—O:o=>-PUz—zI——I—r-no—-urnoI-'><ZITIX><
`MU
`E313§l"'oI:N‘:-—IDI-
`DEMULTIPLEX
`7 2
`/
` Cfl"I03:1rn=U“rnrnc“'2;—°—|
`NODDLATION/
`©\2
`DENODDLATION /
`—l>—-I—I
`SECTION
`/
`TRANSMITTING/RECEIVING
`SECTION
`
`._.
`
`_.
`
`_
`
`._._.
`
`_ ..... ._.l
`
`I S I
`
`T 1
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 6 0f 15 US 2001/0012051 Al
`Sheet 6 of 15 US 2001/0012051 A1
`
`F: i g; .
`Fig.
`
`i5
`8
`
`(TERMINAL ACTIVATION PROCESS )
`
`TERMINAL ACTIVATION PROCESS
`
`1
`
`2
`
`CONDITION SETTING ?
`CONDITION SETTING ‘?
`
`N
`
`VIDEOPHONE MODE ‘?
`
`
`
`# 1
`
`#1
`
`
`
`
`
`
`
`
`
`#11 6
`#16
`TERMINAL CONDITION
`TERMINAL CONDITION
`SETTING PROCESS
`SETTING PROCESS
`#15
`PROCESS
`I
`VIDEOPHONE
`vnneopuone
`PROCESS
`I
`
`##1 3
`# 1 3
`
`N
`
`TELEPHONE MODE?
`
`#14
`# 1 4
`VOICE COMMUNICATION
`VOICE COMMUNICATION
`PROCESS
`PROCESS
`I
`
`N
`
`;‘
`
`I
`
`
`
`
`I
`
`STAND BY
`STAND BY
`
`I
`
`F: i g; -
`
`S)
`
`(TERMINAL CONDITION SETTING PROCESSD
`l
`|
`DISPLAY MODE SETTING
`DISPLAY MODE SETTING
`I
`IMAGING MODE senmc
`IMAGING MODE SETTING
`
`
`
`|
`
`#:2 1
`# 2 I
`
`# 2 2 |
`# 2 2
`
`
`
`RETURN
`
`
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 7 0f 15 US 2001/0012051 Al
`Sheet 7 of 15 US 2001/0012051 A1
`
`F i g -
`
`1 0
`
`JUST
`FITTING SIZE DISPLAY
`
`
`
`
`MODE?
`
` #32
`
`=1
`
`4
`
`#33 JUSTS=0
`|
`
`RETURN
`
`LOW
`RESOLUTION IMAGING
`
`MODE ?
`
`
`
`#42 TE | KA | =1
`TE|KA|=I
`
`TEIKA|=0
`#43 TE | KAI =0
`l
`
`
`#42
`C RETURN )
`
`
`
`<
`
`RETURN
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 8 0f 15 US 2001/0012051 Al
`Sheet 8 of 15 US 2001/0012051 A1
`
`F-'
`
`i g -
`
`1 2
`
`I VIDEOPHONE PROCESS I
`
`# 5 I
`
`DIAL CONNECTION
`
`)
`
`# 5 2
`I
`#53
`TERMINAL DATA RECEPTION
`I
`
`Tv INITIAL SETTING
`'
`
`
`
`
`#54
`I
`#54
`| TERMINAL DATA RECEPTION TERMINAL DATA TRANsNIssIoN
`TERMINAL DATA TRANSMISSION
`I
`
`RMINAT ? N\E>
`
`
`
`# 5 5
`
`Y
`
`I
`
`R E T U R N
`
`I
`
`F‘ i g .
`
`1
`
`3
`
`TV INITIAL SETTING
`
`#62
`#62
`
`#61 RECEIVE RADIO WAVE
`#61
`RECEIVE RADIO WAVE
`I
`DEMODULATE DATA
`DEMUDULATE DATA
`I
`#63 DEMULTI PLEX VOICE
`#63
`DEMULTIPLEX VOICE
`AND IMAGE DATA
`AND IMAGE DATA
`
`TERMINAL IMAGING
`TERMINAL IMAGING
`MODE PROCESS
`MODE PROCESS
`
`
`
`RETURN
`
`@
`
`#64
`#64
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 9 0f 15 US 2001/0012051 A1
`Sheet 9 of 15 US 2001/0012051 Al
`
`Fig- 14
`F7
`i g; -
`1
`£1
`
`(TERMINAL IMAGING MODE PROCESS)
`TERMINAL IMAGING MODE PROCESS
`|
`INCORPORATE DISPLAY RESOLUTION DATA OF DESTINATION
`
`# 7 I
`
`#72
`
`# 7 3
`
`TEIKAI=O
`'?
`
`RESOLUTIONZV G A
`?
`
`Y
`
`>
`
`# T 4
`
`LOW RESOLUTION IMAGING MODE
`
`‘
`
`I
`
`R E T U R N
`
`I
`
`STANDARD
`IMAGING MODE
`
`I
`
`F i g -
`
`1 5
`
`
`
`Y
`
`#84
`STANDARD
`STANDARD
`IMAGING MODE
`IMAGING MODE
`I
`
`# 8 3
`#83
`
`LOW RESOLUTION IMAGING MODE
`LOW RESOLUTION IMAGING MODE
`
`w
`
`I
`
`RETURN I
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 10 0f 15 US 2001/0012051 A1
`Sheet 10 of 15 US 2001/0012051 A1
`
`Fig- 16
`Fig-
`16
`
`TERMINAL DATA TRANSMISSION
`
`(TERMINAL DATA TRANSMISSIOID
`START IMAGING (INTEGRATION)
`START IMAGING (INTEGRATION)
`
`INPUT VOICE
`INPUT VOICE
`
`#9 I
`#9 1
`
`#9 2
`#9 2
`# 9 3
`# 9 3
`
`# 9 4
`# 9 4
`
`# 9 5
`# 9 5
`
`# 9 6
`# 9 6
`
`--IIIIIIA-IN ]I|!—I>
`LETE INTEGRATI
`Y
`
`N
`
`INCORPORATE IMAGE DATA
`INCORPORATE IMAGE DATA
`
`
`
`CORRECT IMAGE DATA
`CORRECT IMAG DATA
`
`COMPRESS IMAGE
`COMPRESS IMAGE
`
`# 9 7 MULTIPLEX VOICE AND IMAGE DATA
`# 9 7 MULTIPLEX VOICE AND IMAGE DATA
`
`# 9 8
`# 9 3
`
`# 9 9
`# 9 9
`
`MODULATE DATA
`MODULATE DATA
`
`TRANSMIT RADIO WAVE
`TRANSMIT RADIO WAVE
`( RETURN )
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 11 0f 15 US 2001/0012051 A1
`Sheet 11 of 15 US 2001/0012051 A1
`
`Fig. 17
`Fig-
`17
`
`( TERMINAL DATA RECEPTION )
`
`#111
`RECEIVE RADIO WAVE
`# 1 1 1
`
`#112
`DEMODULATE DATA
`# 1 1 2
`
`#113
`DEMULTIPLEX VOICE & DATA
`# 1 1 3
`
`#114
`EXPAND IMAGE DATA
`# 1 1 4
`
`#115
`CORRECT IMAGE DATA
`# 1 1 5
`
`#116
`CONVERT IMAGE RESOLUTION
`# 1 1 6
`
`#111
`# 1 1 T WRITE INTO DISPLAY DATA MEMORY
`
`#118
`EXPAND VOICE DATA
`1 8
`# 1
`
`#119
`CONVERT VOICE SIGNALS
`# 1 1 9
`
`#1211
`OUTPUT VOICE
`# 1 2 O
`( RETURN )
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 12 0f 15 US 2001/0012051 A1
`Sheet 12 of 15 US 2001/0012051 A1
`
`Fig. 18
`F=’
`i
`.gg .
`1
`E3
`
`(CONVERT IMAGE RESOLUTION)
`CONVERT IMAGE RESOLUTION
`
`#1 3 1
`
`CONFIRM RECEIVED IMAGE SIZE
`
`#132
`
`N
`
`# 1 3 4 REDUCE RESOLUTION OF RECEIVED
`REDUCE RESOLUTION OF RECEIVED
`#134
`DATA
`DATA
`V
`
`
`
`
`
`
`
`<
`
`RETURN
`
`( RETURN )
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 13 0f 15 US 2001/0012051 A1
`Sheet 13 of 15 US 2001/0012051 A1
`
`Fig- 19
`
`(COMMUNICATION MANAGEMENT CENTER MAI N )
`
`#2 O I
`
`ESENCE OF NEW CONNECTIO
`‘?
`
`Y # 2 O 4
`
`
`
`
`PROCESS
`
`
`
`N
`# 2 O 2
`COMMUNICATION CONNECTION PROCESS
`
`CENTER
`CENTER
`PRE-CONNIUN l CATI 0N
`PRE-COVIIIIUN I CATI ON
`PROCESS
`
`
`#2 O 3
`
`
`
`PRESENCE OF? CONNECTION
`
`
`
`STAND BY
`STANDBY
`
`Fig_ 20
`F i g-
`2 O
`
`(CENTER PRE-COMMUNICATION PROCESS)
`CENTER PRE-COMMUN I CAT I ON PROCESS
`|
`CONFIRM INFORMATION OF COMMUNICATION TERMINAL A
`CONFIRM INFORMATION OF COMMUNICATION TERMINAL A
`|
`CONFIRM INFORMATION OF COMMUNICATION TERMINAL B
`CONFIRM INFORMATION OF COMMUNICATION TERMINAL B
`
`# 2 1
`# 2 1
`
`1
`I
`
`#2 1 2
`#2 1 2
`
`#213
`
`PORTABLE V|SU_$AL TELEPHONE
`
`IILI
`
`Y
`
`#2 I 4
`#214
`
`REQUEST IMAQE CONVERSION
`REQUEST IMAQIE CONVERSION
`
`#2 1 5
`#2 1 5
`
`CENTER IMAGE CONVERSION SETTING
`CENTER IMAGE CONVERSION SETTING
`
`Y
`Y
`
`RETURN
`RETURN
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 14 0f 15 US 2001/0012051 A1
`Sheet 14 of 15 US 2001/0012051 A1
`
`F i g -
`Fig.
`
`2 1
`21
`
`COMMUNICATION CONNECT I ON PROCESS
`
`(commumcmou CONNECTION PROCESS)
`
`
`
`
`
`
`
`# 2 2 5
`| CENTER IMAGE CONVERSION |
`#226
`CENTER IMAGE CONVERSION
`
`# 2 2 5
`# 2 2 5
`
`CENTER
`CENTER
`IMAGE CUNVEIgSION SETTIN
`IMAGE CONVENPSION SETTIN
`
`
`
`
`
`
`
`#227
`ALL
`ALL
`NNE TION
`CONNECT I ON
`N &r§
`Y
`
`Y
`( RETURN )
`
`
`
`RETURN
`
`

`
`Patent Application Publication
`Patent Application Publication
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`Sheet 15 0f 15 US 2001/0012051 Al
`Sheet 15 of 15 US 2001/0012051 A1
`
`F i g .
`Fig.
`
`2 2
`22
`
`(CENTER IMAGE CONVERSION )
`CATCH COMMUNICAITION RADIO TIME
`#2 3 I
`#222
`
`DEMODULAITE DATA
`#2 3 2
`#222
`
`DEMULTIPLEX VOICIE AND IMAGE DATA
`#2 3 3
`#222
`
`EXPAND IMIAGE DATA
`#2 3 4
`#224
`
`# 2 3 5
`# 2 3 5
`
`EQUEST RESOLULI 0N CONVERSION
`EQUEST RESOLUT?ION CONVERSION
`
`N
`
`# 2 3 6
`#236
`
`I
`
`MA GE DA
`MA DA
`GE
`PLAY RESOLUTIO
`DIS
`ESOLUTl0N>D|S?PLAY RESOLUTIO
`‘?
` #2 3 7
`
`#2 3 7
`
`REDUCE IMAGE DATA RESOLUTION
`REDUCE IMAGE DATA RESOLUTION
`
`#2 3 3
`# 2 3 8
`
`EGIIE\ N
`EQUEST
`N
`A FOR COLOR ?CONVERS|0N
`FOR COLOR W
`Y
`
`# 2 3 9
`# 2 3 9
`
`CONVERT COLOR 0F IMAGE
`CONVERT COLOR OF IMAGE
`
`#242
`COMPRESS IMAGE DATA
`#2 4 D
`I
`#242
`# 2 4 1
`MULTIPLEX VOICE AMD IMAGE DATA
`I
`MODULATE DATA
`
`#242
`#2 4 2
`
`@
`
`

`
`US 2001/0012051 A1
`US 2001/0012051 A1
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`METHOD FOR TRANSMITTING IMAGE DATA
`METHOD FOR TRANSMITTING IMAGE DATA
`AND COMMUNICATION TERMINAL
`AND COMMUNICATION TERMINAL
`[0001] This application is based on Japanese Patent Appli-
`[0001] This application is based on Japanese Patent Appli
`cation No. 1250/2000 and 1251/2000 filed on Jan. 7, 2000,
`cation No. 1250/2000 and 1251/2000 ?led on Jan. 7, 2000,
`the contents of which are hereby incorporated by reference.
`the contents of Which are hereby incorporated by reference.
`
`BACKGROUND OF THE INVENTION
`BACKGROUND OF THE INVENTION
`
`[0002]
`1. Field of the Invention
`[0002] 1. Field of the Invention
`[0003] The present
`invention relates to a method for
`[0003] The present invention relates to a method for
`transmitting image data, a method for relaying image data,
`transmitting image data, a method for relaying image data,
`a communication terminal, and a communication manage-
`a communication terminal, and a communication manage
`ment center. The present invention is utilized for portable
`ment center. The present invention is utiliZed for portable
`communication terminals for conducting image communi-
`communication terminals for conducting image communi
`cation, such as a portable visual telephone.
`cation, such as a portable visual telephone.
`[0004]
`2. Description of the Prior Art
`[0004] 2. Description of the Prior Art
`[0005] Conventionally, communication terminals capable
`[0005] Conventionally, communication terminals capable
`of transmitting and receiving voice and image have been
`of transmitting and receiving voice and image have been
`proposed in order to be utilized for wire or wireless visual
`proposed in order to be utiliZed for Wire or Wireless visual
`telephones, teleconference system, other image communi-
`telephones, teleconference system, other image communi
`cation systems or the like.
`cation systems or the like.
`[0006]
`In such communication terminals, images of sub-
`[0006] In such communication terminals, images of sub
`jects taken by a camera are transmitted as a still picture or
`jects taken by a camera are transmitted as a still picture or
`a motional picture. At transmission of the image, image data
`a motional picture. At transmission of the image, image data
`are often highly compressed for saving communication cost.
`are often highly compressed for saving communication cost.
`Especially,
`in visual telephones, a screen of the display
`Especially, in visual telephones, a screen of the display
`device is relatively made to be small for miniaturizing the
`device is relatively made to be small for miniaturiZing the
`device and simplifying of operation thereof. By connecting
`device and simplifying of operation thereof. By connecting
`a personal computer with a camera and telephone or an
`a personal computer With a camera and telephone or an
`audio apparatus, it can be used as a communication terminal
`audio apparatus, it can be used as a communication terminal
`for a visual telephone or that for teleconference.
`for a visual telephone or that for teleconference.
`
`[0007]
`It has been proposed of communication terminals
`[0007] It has been proposed of communication terminals
`for transmitting image data together with voice, comprising
`for transmitting image data together With voice, comprising
`a headset for speaking by the telephone, a memory card
`a headset for speaking by the telephone, a memory card
`storing image data which previously are taken, a liquid
`storing image data Which previously are taken, a liquid
`crystal display device, etc. (Japanese Unexamined Patent
`crystal display device, etc. (Japanese Unexamined Patent
`Publication No. 6-261167).
`Publication No. 6-261167).
`[0008] When the above-mentioned communication termi-
`[0008] When the above-mentioned communication termi
`nals are used to communicate images, a communication
`nals are used to communicate images, a communication
`management center for relaying data performs a variety of
`management center for relaying data performs a variety of
`exchange controls for data exchange.
`eXchange controls for data exchange.
`[0009] When case image communication is conducted by
`[0009] When case image communication is conducted by
`using the above-mentioned various communication termi-
`using the above-mentioned various communication termi
`nals, the screen sizes of display devices are different depend-
`nals, the screen siZes of display devices are different depend
`ing on types of device of the destination, and thus resolu-
`ing on types of device of the destination, and thus resolu
`tions of display are varied from each other.
`tions of display are varied from each other.
`[0010] When transmitting the image data from communi-
`[0010] When transmitting the image data from communi
`cation terminals, therefore, resolution of the image data to be
`cation terminals, therefore, resolution of the image data to be
`transmitted is sometimes higher than that of the destination
`transmitted is sometimes higher than that of the destination
`of communication. In such cases, the image is out of frame
`of communication. In such cases, the image is out of frame
`of the display screen of the destination and therefore, can not
`of the display screen of the destination and therefore, can not
`be seen easily and furthermore, communication cost
`be seen easily and furthermore, communication cost
`increases due to data volume being large. Furthermore, in
`increases due to data volume being large. Furthermore, in
`case of portable communication terminals, there is a prob-
`case of portable communication terminals, there is a prob
`lem that operation time becomes shortened because of waste
`lem that operation time becomes shortened because of Waste
`of battery due to large data volume.
`of battery due to large data volume.
`[0011] Conventionally, the communication management
`[0011] Conventionally, the communication management
`center only relays image data to be transmitted, and does not
`center only relays image data to be transmitted, and does not
`convert or control the image data according to the resolution
`convert or control the image data according to the resolution
`of the display device of the communication terminal.
`of the display device of the communication terminal.
`
`SUMMARY OF THE INVENTION
`SUMMARY OF THE INVENTION
`
`[0012] An object of the present invention is to reduce data
`[0012] An object of the present invention is to reduce data
`volume to be communicated, and to suppress wasteful
`volume to be communicated, and to suppress Wasteful
`battery consumption in case of portable devices, by control-
`battery consumption in case of portable devices, by control
`ling for transmitting image data whose resolution is made to
`ling for transmitting image data Whose resolution is made to
`be matched with that of the display device of the destination
`be matched With that of the display device of the destination
`at the time of transmitting image data from communication
`at the time of transmitting image data from communication
`terminals.
`terminals.
`
`[0013] Another object of the present invention is to reduce
`[0013] Another object of the present invention is to reduce
`data volume to be communicated by converting the resolu-
`data volume to be communicated by converting the resolu
`tion of image data to be lowered depending on the resolution
`tion of image data to be loWered depending on the resolution
`of the display device of the destination when relaying image
`of the display device of the destination When relaying image
`data at the communication management center with which a
`data at the communication management center With Which a
`plurality of communication terminals are connected.
`plurality of communication terminals are connected.
`
`[0014] According to a preferred aspect of the present
`[0014] According to a preferred aspect of the present
`invention, a communication terminal comprises a memory
`invention, a communication terminal comprises a memory
`for storing a table in which data for identifying destinations
`for storing a table in Which data for identifying destinations
`of communication and resolutions of display devices of the
`of communication and resolutions of display devices of the
`destinations are associated with each other, an image pro-
`destinations are associated With each other, an image pro
`cessor for generating an image data with a resolution of the
`cessor for generating an image data With a resolution of the
`display device of the destination based on the table, and a
`display device of the destination based on the table, and a
`transmission section for transmitting the image data gener-
`transmission section for transmitting the image data gener
`ated by the image processor. Preferably, the terminal further
`ated by the image processor. Preferably, the terminal further
`comprises a sensor for taking a picture of a subject and for
`comprises a sensor for taking a picture of a subject and for
`providing the image processor with the image data. The
`providing the image processor With the image data. The
`terminal further comprises a receiving section for receiving
`terminal further comprises a receiving section for receiving
`image data from the destination and a display section for
`image data from the destination and a display section for
`displaying the image data received at the receiving section.
`displaying the image data received at the receiving section.
`The terminal further comprises an estimating section for
`The terminal further comprises an estimating section for
`estimating a resolution of the display device of the destina-
`estimating a resolution of the display device of the destina
`tion based on the received image data.
`tion based on the received image data.
`
`[0015] According to another preferred aspect of
`the
`[0015] According to another preferred aspect of the
`present
`invention, a communication management center
`present invention, a communication management center
`with which a plurality of communication terminals are
`With Which a plurality of communication terminals are
`connected and which transmits and receives data to/from
`connected and Which transmits and receives data to/from
`each communication terminal comprises a display resolution
`each communication terminal comprises a display resolution
`detection section for obtaining information about the reso-
`detection section for obtaining information about the reso
`lution of the display device of the communication terminal,
`lution of the display device of the communication terminal,
`a resolution conversion section for converting the image
`a resolution conversion section for converting the image
`data transmitted from the communication terminal into low
`data transmitted from the communication terminal into loW
`resolution image data based on the information about the
`resolution image data based on the information about the
`resolution obtained by the display resolution detection sec-
`resolution obtained by the display resolution detection sec
`tion, and a transmission section for transmitting the low
`tion, and a transmission section for transmitting the loW
`resolution image data obtained by converting the data at the
`resolution image data obtained by converting the data at the
`resolution conversion section.
`resolution conversion section.
`
`[0016] The other objects and features of the present inven-
`[0016] The other objects and features of the present inven
`tion will be more fully understood from the following
`tion Will be more fully understood from the folloWing
`detailed description with reference to the accompanying
`detailed description With reference to the accompanying
`draWings.
`drawings.
`BRIEF DESCRIPTION OF THE DRAWINGS
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[0017] FIG. 1 is a block diagram schematically showing
`[0017] FIG. 1 is a block diagram schematically shoWing
`the whole communication system using a communication
`the Whole communication system using a communication
`terminal according to an embodiment of the present inven-
`terminal according to an embodiment of the present inven
`tion.
`tion.
`
`[0018] FIG. 2 is a block diagram showing an example of
`[0018] FIG. 2 is a block diagram shoWing an eXample of
`configuration of a portable terminal.
`con?guration of a portable terminal.
`
`[0019] FIG. 3 is a perspective view showing an example
`[0019] FIG. 3 is a perspective vieW shoWing an eXample
`of appearance of the portable terminal.
`of appearance of the portable terminal.
`
`

`
`US 2001/0012051 A1
`US 2001/0012051 A1
`
`Aug. 9, 2001
`Aug. 9, 2001
`
`[0020] FIGS. 4A and 4B are schematic diagrams for
`[0020] FIGS. 4A and 4B are schematic diagrams for
`illustrating resolution control by readout control of an imag-
`illustrating resolution control by readout control of an imag
`ing sensor.
`ing sensor.
`[0021] FIG. 5 is a diagram showing an example of a
`[0021] FIG. 5 is a diagram shoWing an example of a
`display resolution table.
`display resolution table.
`[0022] FIG. 6 is a diagram showing an example of a
`[0022] FIG. 6 is a diagram shoWing an example of a
`transmission data format transmitted from the portable ter-
`transmission data format transmitted from the portable ter
`minal.
`minal.
`
`[0023] FIG. 7 is a block diagram showing an example of
`[0023] FIG. 7 is a block diagram shoWing an example of
`functions of a communication management center.
`functions of a communication management center.
`
`[0024] FIG. 8 is a flow chart showing an activation
`[0024] FIG. 8 is a flow chart shoWing an activation
`process of the portable terminal.
`process of the portable terminal.
`[0025] FIG. 9 is a flow chart showing a terminal condition
`[0025] FIG. 9 is a flow chart shoWing a terminal condition
`setting process.
`setting process.
`[0026] FIG. 10 is a flow chart showing a display mode
`[0026] FIG. 10 is a flow chart shoWing a display mode
`setting process.
`setting process.
`[0027] FIG. 11 is a flow chart showing an imaging mode
`[0027] FIG. 11 is a flow chart shoWing an imaging mode
`setting process.
`setting process.
`[0028] FIG. 12 is a flow chart showing a process of a
`[0028] FIG. 12 is a flow chart shoWing a process of a
`visual telephone.
`visual telephone.
`[0029] FIG. 13 is a flow chart showing a television initial
`[0029] FIG. 13 is a flow chart shoWing a television initial
`setting process.
`setting process.
`[0030] FIG. 14 is a flow chart showing a terminal imaging
`[0030] FIG. 14 is a flow chart shoWing a terminal imaging
`mode process.
`mode process.
`[0031] FIG. 15 is a flow chart showing another example
`[0031] FIG. 15 is a flow chart shoWing another example
`of a terminal imaging mode process.
`of a terminal imaging mode process.
`[0032] FIG. 16 is a flow chart showing a data transmission
`[0032] FIG. 16 is a flow chart shoWing a data transmission
`process.
`process.
`[0033] FIG. 17 is a flow chart showing a data receiving
`[0033]
`FIG. 17 is a flow chart shoWing a data receiving
`process.
`process.
`[0034] FIG. 18 is a flow chart showing an image resolu-
`[0034] FIG. 18 is a flow chart shoWing an image resolu
`tion conversion process.
`tion conversion process.
`
`[0035] FIG. 19 is a main flow chart showing a routine
`[0035] FIG. 19 is a main flow chart shoWing a routine
`process of the communication management center.
`process of the communication management center.
`[0036] FIG. 20 is a flow chart showing a pre-communi-
`[0036] FIG. 20 is a flow chart shoWing a pre-communi
`cation process of the center.
`cation process of the center.
`
`[0037] FIG. 21 is a flow chart showing a communication
`[0037] FIG. 21 is a flow chart shoWing a communication
`connection process.
`connection process.
`
`[0038] FIG. 22 is a flow chart showing an image conver-
`[0038] FIG. 22 is a flow chart shoWing an image conver
`sion process of the center.
`sion process of the center.
`
`DESCRIPTION OF THE PREFERRED
`DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`EMBODIMENTS
`
`[0039] FIG. 1 is a block diagram schematically showing
`[0039] FIG. 1 is a block diagram schematically shoWing
`the whole communication system 1 including the commu-
`the Whole communication system 1 including the commu
`nication management center according to the present inven-
`nication management center according to the present inven
`tion.
`tion.
`
`[0040] Referring to FIG. 1, the communication system 1
`[0040] Referring to FIG. 1, the communication system 1
`comprises a communication management center 10, radio
`comprises a communication management center 10, radio
`base stations 11a, 11b .
`.
`.
`, portable terminals 12a, 12b .
`.
`.
`base stations 11a, 11b .
`.
`. , portable terminals 12a, 12b .
`.
`.
`connected wirelessly by radio lines with the radio base
`connected Wirelessly by radio lines With the radio base
`stations 11a, 11b .
`.
`.
`, wire base stations 13a, 13b .
`.
`.
`, and
`stations 11a, 11b .
`.
`. , Wire base stations 13a, 13b .
`.
`. , and
`terminals 14a, 14b .
`.
`.
`, connected by cable lines CLs with
`terminals 14a, 14b .
`.
`. , connected by cable lines CLs With
`the wire base stations 13a, 13b .
`.
`.
`.
`the Wire base stations 13a, 13b .
`.
`.
`.
`
`[0041] Various lines such as public lines, dedicated lines,
`[0041] Various lines such as public lines, dedicated lines,
`ISDN lines are used as cable lines CLs. The cable lines CLs
`ISDN lines are used as cable lines CLs. The cable lines CLs
`can also be connected various networks such as LANs (local
`can also be connected various netWorks such as LAN s (local
`area networks), WANs (wide area networks), Internets. Any
`area networks), WANs (Wide area networks), Internets. Any
`one or whole of the radio base stations 11a, 11b .
`.
`. may be
`one or Whole of the radio base stations 11a, 11b .
`.
`. may be
`referred to as “radio base station 11”, and the other stations
`referred to as “radio base station 11”, and the other stations
`and terminals are the same.
`and terminals are the same.
`
`[0042] The
`communication management
`center
`10
`[0042] The communication management center 10
`includes a wire communication management center 10a and
`includes a Wire communication management center 10a and
`a radio communication management center 10b. The wire
`a radio communication management center 10b. The Wire
`communication management center 10a and the radio com-
`communication management center 10a and the radio com
`munication management center 10b communicate each
`munication management center 10b communicate each
`other, and manage the communication by controlling com-
`other, and manage the communication by controlling com
`munication and controlling exchange of the data so that
`munication and controlling exchange of the data so that
`communication among the whole of the radio base station 11
`communication among the Whole of the radio base station 11
`and the wire base station 13 could be possible.
`and the Wire base station 13 could be possible.
`
`[0043] The portable terminal 12 is a digital
`telephone
`[0043] The portable terminal 12 is a digital telephone
`capable of data communication. Acamera is mounted on the
`capable of data communication. Acamera is mounted on the
`portable terminal 12 and it can be used as a visual telephone.
`portable terminal 12 and it can be used as a visual telephone.
`Furthermore, the portable terminal 12 can transmit image
`Furthermore, the portable terminal 12 can transmit image
`data imaged (or taken) to the other portable terminal 12 or
`data imaged (or taken) to the other portable terminal 12 or
`a terminal device 14, etc. This transmission will be described
`a terminal device 14, etc. This transmission Will be described
`later in detail.
`later in detail.
`
`[0044] The terminal device 14 is, for example, an ana-
`[0044] The terminal device 14 is, for example, an ana
`logue telephone, a modem, a digital terminal equipment, or
`logue telephone, a