JP2001285952A - Incoming call restriction control method for mobile telephone set - Google Patents

Incoming call restriction control method for mobile telephone set

Info

Publication number
JP2001285952A
JP2001285952A JP2000098155A JP2000098155A JP2001285952A JP 2001285952 A JP2001285952 A JP 2001285952A JP 2000098155 A JP2000098155 A JP 2000098155A JP 2000098155 A JP2000098155 A JP 2000098155A JP 2001285952 A JP2001285952 A JP 2001285952A
Authority
JP
Japan
Prior art keywords
wireless communication
incoming call
short
mobile phone
range wireless
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2000098155A
Other languages
Japanese (ja)
Inventor
Hideo Fukuchi
英雄 福地
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP2000098155A priority Critical patent/JP2001285952A/en
Publication of JP2001285952A publication Critical patent/JP2001285952A/en
Withdrawn legal-status Critical Current

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  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an incoming call restriction control method and device by which an incoming call can automatically be subjected to restriction control in an area where the incoming call arrived in the mobile telephone set requires restriction. SOLUTION: This invention provides the mobile telephone set that has a near distance wireless communication means in addition to a wireless communication means making wireless communication with a mobile phone base station and provides the incoming call restriction device that has a wireless communication means equivalent to the near distance wireless communication means of the mobile telephone set, where the mobile telephone set and the incoming call restriction device make communication with the near distance wireless communication means so as to apply incoming restriction control required in a specific area to the mobile phone when the mobile telephone set exists in the vicinity of the incoming call restriction device.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、携帯電話機と携帯
電話機の着信動作を制御しうる着信規制装置に関するも
のである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone and an incoming call control device capable of controlling the incoming operation of the portable telephone.

【0002】[0002]

【発明が解決しようとする課題】従来、例えば自動車を
運転中に携帯電話が着信動作し運転への注意力が途切れ
危険な体験をする等、携帯電話機の利用に注意が必要な
エリアではユーザー自身が携帯電話機を操作し、ドライ
ブモード等の着信を拒否するモードへ切替える必要があ
った。しかし、ユーザーがドライブモードへの切替え操
作を忘れてしまうことが多いため携帯電話機が着信可能
な状態で自動車へ持ち込まれてしまう。また、ドライブ
モードへの切替え操作がされたとしても自動車を降りる
際にドライブモードの解除を忘れてしまうことが多かっ
た。このように携帯電話機の着信規制が必要なエリアに
おいて、確実に着信規制及びその解除を行う技術的な方
法は存在しない。
Conventionally, in an area where the use of a mobile phone requires attention, for example, when a mobile phone receives an incoming call while driving a car and the driver's attention is interrupted and the user experiences a dangerous experience, the user himself / herself is required. Had to operate a mobile phone and switch to a mode for rejecting incoming calls, such as a drive mode. However, since the user often forgets the operation of switching to the drive mode, the mobile phone is brought into the car in a state where it can receive a call. In addition, even when the operation to switch to the drive mode is performed, the driver often forgets to release the drive mode when getting off the car. As described above, there is no technical method for surely restricting incoming calls and canceling them in an area where incoming calls of mobile phones are required.

【0003】[0003]

【課題を解決するための手段】携帯電話基地局との無線
通信を行う無線通信手段とは別に近距離無線通信手段を
持つ携帯電話機とその携帯電話機の近距離無線通信手段
と同等の無線通信手段を持つ着信規制装置において、携
帯電話機が着信規制装置の近くに存在する状態で、携帯
電話機と着信規制装置が近距離無線通信手段による通信
を行うことによって、特定のエリアで必要となる携帯電
話機の着信規制制御を行う。それによって例えば携帯電
話機の着信動作による自動車運転中の危険を回避するこ
とができる。
A portable telephone having short-range wireless communication means separately from a wireless communication means for performing wireless communication with a portable telephone base station, and a wireless communication means equivalent to the short-range wireless communication means of the portable telephone In the incoming call restricting device having a mobile phone, the mobile phone and the incoming call restricting device perform communication by the short-range wireless communication means in a state where the mobile phone is present near the incoming call restricting device, so that the Perform incoming call barring control. As a result, it is possible to avoid danger during driving a car due to, for example, an incoming call operation of a mobile phone.

【0004】[0004]

【発明の実施の形態】図面に基づいて本発明の実施例を
説明する。図1は、本発明を適用した着信規制装置及び
携帯電話機を示すブロック図である。着信規制装置10
0は携帯電話機200が有する近距離通信部210との
双方向無線通信を制御する近距離無線通信制御部102
と、無線通信パケットの送受信を行い近距離無線通信制
御部102に対してデータパケットの入出力を行う近距
離無線通信部103と、着信規制装置100の機能を統
括する制御部101から構成される。
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an incoming call restriction device and a mobile phone to which the present invention is applied. Incoming call control device 10
0 is a short-range wireless communication control unit 102 that controls bidirectional wireless communication with the short-range communication unit 210 included in the mobile phone 200
And a short-range wireless communication unit 103 that transmits and receives wireless communication packets and inputs and outputs data packets to and from the short-range wireless communication control unit 102, and a control unit 101 that controls the functions of the incoming call restriction device 100. .

【0005】携帯電話機200は無線基地局との間で無
線による通話等を行う無線部201、及び携帯電話機能
を統括する制御部202を有し、さらに着信規制装置1
00との双方向無線通信を行う近距離通信部210を有
する。近距離無線通信部210は、着信規制装置100
との双方向無線通信を制御する近距離無線通信制御部2
11と、着信規制装置100と無線通信パケットの送受
信を行い近距離無線通信制御部211に対してデータパ
ケットの入出力を行う近距離無線通信部212を有す
る。但し、本発明に関わるブロック構成以外の、ディス
プレイやキーボード等は図示しない。
[0005] The mobile phone 200 has a radio section 201 for making a radio call with a radio base station, and a control section 202 for controlling the mobile phone function.
It has a short-range communication unit 210 that performs two-way wireless communication with 00. The short-range wireless communication unit 210 is a
Short-range wireless communication control unit 2 that controls two-way wireless communication with the
And a short-range wireless communication unit 212 that transmits and receives wireless communication packets to and from the incoming call restriction device 100 and that inputs and outputs data packets to and from the short-range wireless communication control unit 211. However, a display and a keyboard other than the block configuration related to the present invention are not shown.

【0006】次に、このように構成した着信規制装置及
び携帯電話機の基本動作について説明する。着信規制装
置100及び携帯電話機200における基本動作は、概
ね図2のフローチャートに示すとおりである。着信規制
装置100は動作開始時に初期的に探索モードで動作し
ている(ST200)。制御部101は動作開始後、近
距離無線通信制御部102に対して探索モード動作の指
令を送る。この指令を受取った近距離無線通信制御部1
02は、携帯電話機探索信号を無線通信に適したパケッ
ト形式に変換し近距離無線通信部103へ送出する。近
距離無線通信部103は近距離無線通信制御部102か
ら受取ったパケット信号を電波信号として送信する(S
T201)。次に近距離無線通信制御部102は携帯電
話機200からの応答信号を受信するための受信動作を
近距離無線通信部103に指令する。近距離無線通信部
103は応答信号を受信するための受信動作を行う(S
T202)。受信データは近距離無線通信部103から
近距離無線通信制御部102へ送出され判断される(S
T203)。携帯電話機200から送信された応答信号
を検出しなかった場合に着信規制装置100は探索モー
ドで以上の動作(ST201〜ST203)を繰り返
す。
Next, the basic operation of the incoming call control device and the portable telephone thus configured will be described. The basic operation of the incoming call restriction device 100 and the mobile phone 200 is generally as shown in the flowchart of FIG. Incoming call restricting apparatus 100 is initially operating in search mode at the start of operation (ST200). After the operation starts, the control unit 101 sends a search mode operation command to the short-range wireless communication control unit 102. Short-range wireless communication control unit 1 receiving this command
In step 02, the mobile phone search signal is converted into a packet format suitable for wireless communication and transmitted to the short-range wireless communication unit 103. The short-range wireless communication unit 103 transmits the packet signal received from the short-range wireless communication control unit 102 as a radio signal (S
T201). Next, short-range wireless communication control section 102 instructs short-range wireless communication section 103 to perform a receiving operation for receiving a response signal from mobile phone 200. The short-range wireless communication unit 103 performs a receiving operation for receiving a response signal (S
T202). The received data is transmitted from the short-range wireless communication unit 103 to the short-range wireless communication control unit 102 and determined (S
T203). When a response signal transmitted from mobile phone 200 is not detected, incoming call restriction device 100 repeats the above operation (ST201 to ST203) in the search mode.

【0007】携帯電話機200は初期的に探索信号スキ
ャンモードで動作している(ST210)。制御部20
2は動作開始後、近距離無線通信制御部211に対して
探索信号スキャンモード動作の指令を送る。この指令を
受取った近距離無線通信制御部211は、近距離無線通
信部212に対して探索信号の受信動作指令を送る。こ
の指令を受取った近距離無線通信部212は探索信号の
受信動作を行う(ST211)。受信データは近距離無
線通信部212から近距離無線通信制御部211へ送出
され判断される(ST212)。着信規制装置100か
ら送信された探索信号を検出しなかった場合には、携帯
電話機200は着信規制装置100及び携帯電話機20
0の近距離無線通信可能距離の範囲外に存在している。
この状態では、携帯電話機200は探索信号受信を一定
の間隔で繰り返す(ST211〜ST212)。着信規
制装置100から送信された探索信号を検出した場合に
は、携帯電話機200は着信規制装置100及び携帯電
話機200の近距離無線通信可能距離の範囲内に存在し
ている。この場合近距離無線通信制御部211は応答信
号を無線通信に適したパケット形式に変換し近距離無線
通信部212へ送出する。近距離無線通信部212は近
距離無線通信制御部211から受取ったパケット信号を
電波信号として送信する(ST213)。
[0007] The mobile phone 200 is initially operating in the search signal scan mode (ST210). Control unit 20
After starting the operation, 2 transmits a search signal scan mode operation command to the short-range wireless communication control unit 211. The short-range wireless communication control unit 211 that has received this command sends a search signal reception operation command to the short-range wireless communication unit 212. The short-distance wireless communication unit 212 that has received this command performs a search signal receiving operation (ST211). The received data is transmitted from the short-range wireless communication unit 212 to the short-range wireless communication control unit 211 and determined (ST212). When the search signal transmitted from the incoming call restriction device 100 is not detected, the mobile phone 200
0 exists outside the range of the short-range wireless communicable distance.
In this state, mobile phone 200 repeats the search signal reception at regular intervals (ST211 to ST212). When the search signal transmitted from the incoming call restriction device 100 is detected, the mobile phone 200 is within the short-range wireless communication distance of the incoming call restriction device 100 and the mobile phone 200. In this case, the short-range wireless communication control unit 211 converts the response signal into a packet format suitable for wireless communication and sends the packet to the short-range wireless communication unit 212. Short-range wireless communication section 212 transmits the packet signal received from short-range wireless communication control section 211 as a radio signal (ST213).

【0008】着信規制装置100が携帯電話機200か
ら送信された応答信号を検出した場合、携帯電話機20
0が着信規制装置100の着信規制範囲に存在すると判
断し、着信規制信号を携帯電話機200に対して送信す
る。近距離無線通信制御部102は着信規制信号を無線
通信に適したパケット形式に変換し近距離無線通信部1
03へ送出する。近距離無線通信部103は近距離無線
通信制御部102から受取ったパケット信号を電波信号
として送信する(ST204)。これと同時に、携帯電
話機200は着信規制信号の受信動作を行う。受信デー
タは近距離無線通信部212から近距離無線通信制御部
211へ送出され、さらに制御部202へ送られる(S
T214)。制御部202は着信規制信号を受信すると
無線部201を介して携帯電話基地局と無線通信を行い
ドライブモード等の着信拒否モードへ移行するための手
続きを行う(ST215)。このように携帯電話機20
0は着信規制装置100に近づいた際に自動的に着信拒
否の状態に移行する。また制御部202はビーコンモー
ド動作を近距離無線通信制御部211に対して指令する
(ST216)。着信規制装置100は携帯電話機20
0への着信規制信号を送信すると、制御部101から近
距離無線通信制御部102へビーコンモード動作の指令
が送られる(ST205)。
When the incoming call restricting device 100 detects a response signal transmitted from the mobile phone 200, the mobile phone 20
It is determined that “0” is within the incoming call control range of the incoming call control device 100, and an incoming call control signal is transmitted to the mobile phone 200. The short-range wireless communication control unit 102 converts the incoming call restriction signal into a packet format suitable for wireless communication, and converts the short-range wireless communication unit 1
03. Short-range wireless communication section 103 transmits the packet signal received from short-range wireless communication control section 102 as a radio signal (ST204). At the same time, the mobile phone 200 performs an operation of receiving the incoming call restriction signal. The received data is transmitted from the short-range wireless communication unit 212 to the short-range wireless communication control unit 211, and further transmitted to the control unit 202 (S
T214). Upon receiving the incoming call restriction signal, control unit 202 performs wireless communication with the mobile phone base station via wireless unit 201 and performs a procedure for shifting to an incoming call rejection mode such as a drive mode (ST215). Thus, the mobile phone 20
0 automatically shifts to an incoming call rejection state when approaching the incoming call control device 100. Further, control section 202 commands beacon mode operation to short-range wireless communication control section 211 (ST216). The incoming call restriction device 100 is a mobile phone 20
When transmitting the incoming call restriction signal to 0, the control section 101 sends a beacon mode operation command to the short-range wireless communication control section 102 (ST205).

【0009】図3のフローチャートは着信規制装置10
0及び携帯電話機200のビーコンモードの動作につい
て説明している。着信規制装置100の近距離無線通信
制御部102は、ビーコン信号を無線通信に適したパケ
ット形式に変換し近距離無線通信部103へ送出する。
近距離無線通信部103は近距離無線通信制御部102
から受取ったパケット信号を電波信号として送信する
(ST206)。次に近距離無線通信制御部102は携
帯電話機200からの応答信号を受信するための受信動
作を近距離無線通信部103に指令する。近距離無線通
信部103は応答信号を受信するための受信動作を行う
(ST207)。受信データは近距離無線通信部103
から近距離無線通信制御部102へ送出され判断される
(ST208)。携帯電話機200から送信された応答
信号を検出した場合には携帯電話機200が着信規制装
置100の着信規制範囲に存在すると判断し、着信規制
装置100はビーコンモードで以上の動作を繰り返す
(ST206〜ST208)。携帯電話機200から送
信された応答信号を検出しなかった場合には携帯電話機
200が着信規制装置100の着信規制範囲に存在しな
いと判断し着信規制装置100は再び探索モード動作を
開始する(ST200)。
The flowchart of FIG.
0 and the operation of the mobile phone 200 in the beacon mode are described. The short-range wireless communication control unit 102 of the incoming call restriction device 100 converts the beacon signal into a packet format suitable for wireless communication and sends it to the short-range wireless communication unit 103.
The short-range wireless communication unit 103 is a short-range wireless communication control unit 102
Is transmitted as a radio signal (ST206). Next, short-range wireless communication control section 102 instructs short-range wireless communication section 103 to perform a receiving operation for receiving a response signal from mobile phone 200. Short-range wireless communication section 103 performs a receiving operation for receiving the response signal (ST207). The received data is the short-range wireless communication unit 103
Is transmitted to the short-range wireless communication control unit 102 and determined (ST208). When the response signal transmitted from mobile phone 200 is detected, it is determined that mobile phone 200 is within the incoming call restriction range of incoming call control apparatus 100, and incoming call control apparatus 100 repeats the above operation in the beacon mode (ST206 to ST208). ). If the response signal transmitted from mobile phone 200 is not detected, it is determined that mobile phone 200 is not in the incoming call control range of incoming call control device 100, and incoming call control device 100 starts the search mode operation again (ST200). .

【0010】携帯電話機200の近距離無線通信制御部
211は、近距離無線通信部212に対してビーコン信
号の受信動作指令を送る。近距離無線通信部212はビ
ーコン信号の受信動作を行う(ST217)。受信デー
タは近距離無線通信部212から近距離無線通信制御部
211へ送出され判断される(ST218)。着信規制
装置100から送信されたビーコン信号を検出した場合
には、携帯電話機200は着信規制装置100の着信規
制範囲に存在すると判断し、近距離無線通信制御部21
1は応答信号を無線通信に適したパケット形式に変換し
近距離無線通信部212へ送出する。近距離無線通信部
212は近距離無線通信制御部211から受取ったパケ
ット信号を電波信号として送信する(ST219)。そ
の後携帯電話機200は以上のビーコンモード動作を繰
り返す(ST217〜ST219)。着信規制装置10
0から送信されたビーコン信号を検出しなかった場合に
は、携帯電話機200は着信規制装置100の着信規制
範囲に存在しない判断し、制御部202は無線部201
を介して携帯電話基地局と無線通信を行いドライブモー
ド等の着信拒否モードから通常の着信モードへ移行する
ための手続きを行う(ST220)。このように携帯電
話機200は着信規制装置100から遠ざかった際に自
動的に着信拒否モードから通常着信モードへ移行する。
また制御部202は探索信号スキャンモード動作を近距
離無線通信制御部211に対して指令する(ST21
0)。
The short-range wireless communication control section 211 of the portable telephone 200 sends a beacon signal receiving operation command to the short-range wireless communication section 212. Short-range wireless communication section 212 performs a beacon signal receiving operation (ST217). The received data is transmitted from short-range wireless communication section 212 to short-range wireless communication control section 211 and is determined (ST218). When detecting the beacon signal transmitted from the incoming call restricting device 100, the mobile phone 200 determines that the mobile phone 200 is in the incoming call restricting range of the incoming call restricting device 100, and the short-range wireless communication control unit 21
1 converts the response signal into a packet format suitable for wireless communication and sends it to the short-range wireless communication unit 212. Short-range wireless communication section 212 transmits the packet signal received from short-range wireless communication control section 211 as a radio signal (ST219). Thereafter, mobile phone 200 repeats the above-described beacon mode operation (ST217 to ST219). Incoming call control device 10
If the mobile phone 200 does not detect the beacon signal transmitted from 0, it determines that the mobile phone 200 is not in the incoming call restriction range of the incoming call control device 100, and the control unit 202
And performs wireless communication with the mobile phone base station via the base station to perform a procedure for shifting from a call rejection mode such as a drive mode to a normal call reception mode (ST220). As described above, when the mobile phone 200 moves away from the incoming call restriction device 100, the mobile phone 200 automatically shifts from the incoming call rejection mode to the normal incoming call mode.
Further, control section 202 commands search signal scan mode operation to short-range wireless communication control section 211 (ST21).
0).

【0011】[0011]

【発明の効果】以上のとおり、本発明によれば、携帯電
話機が着信規制装置と双方向無線通信が可能な距離に近
づいた際に、自動的に携帯電話機が着信拒否モードに移
行する。また、携帯電話機が着信規制装置と双方向無線
通信が不可能な距離に遠ざかった際には、自動的に携帯
電話機が着信拒否モードから通常着信モードへ移行す
る。この為、携帯電話機の着信規制が必要なエリアにお
いて、確実に着信規制及びその解除が行われる。
As described above, according to the present invention, when the portable telephone approaches a range where two-way wireless communication is possible with the incoming call restriction device, the portable telephone automatically shifts to the call rejection mode. Further, when the mobile phone moves away from the incoming call control device to a distance where two-way wireless communication is not possible, the mobile phone automatically shifts from the incoming call rejection mode to the normal incoming call mode. Therefore, in an area where the incoming call restriction of the mobile phone is required, the incoming call restriction and its release are surely performed.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明を適用した着信規制装置及び携帯電話機
の機能ブロック図である。
FIG. 1 is a functional block diagram of an incoming call restriction device and a mobile phone to which the present invention is applied.

【図2】本発明を適用した着信規制装置及び携帯電話機
の基本動作を示すフローチャートである。
FIG. 2 is a flowchart showing a basic operation of the incoming call restriction device and the mobile phone to which the present invention is applied.

【図3】本発明を適用した着信規制装置及び携帯電話機
のビーコンモード動作を示すフローチャートである。
FIG. 3 is a flowchart illustrating a beacon mode operation of the incoming call restriction device and the mobile phone to which the present invention is applied.

【符号の説明】[Explanation of symbols]

100 着信規制装置 101 制御部 102 近距離無線通信制御部 103 近距離無線通信部 200 携帯電話機 201 無線部 202 制御部 210 近距離通信部 211 近距離無線通信制御部 212 近距離無線通信部 REFERENCE SIGNS LIST 100 incoming call control device 101 control unit 102 short-range wireless communication control unit 103 short-range wireless communication unit 200 mobile phone 201 wireless unit 202 control unit 210 short-range communication unit 211 short-range wireless communication control unit 212 short-range wireless communication unit

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】携帯電話基地局との無線通信を行う無線通
信手段とは別に近距離無線通信手段を持つ携帯電話機と
その携帯電話機の近距離無線通信手段と同等の無線通信
手段を持つ着信規制装置において、携帯電話機が着信規
制装置の近くに存在する状態で、携帯電話機と着信規制
装置が近距離無線通信手段による通信を行うことによっ
て、特定のエリアで必要となる携帯電話機の着信規制制
御を行う方法。
A portable telephone having short-range wireless communication means separately from a wireless communication means for performing wireless communication with a portable telephone base station, and an incoming call restriction having a wireless communication means equivalent to the short-range wireless communication means of the portable telephone. In the device, in a state where the mobile phone is present near the incoming call restriction device, the mobile phone and the incoming call control device perform communication by short-range wireless communication means, thereby performing incoming call restriction control of the mobile phone required in a specific area. How to do.
JP2000098155A 2000-03-31 2000-03-31 Incoming call restriction control method for mobile telephone set Withdrawn JP2001285952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000098155A JP2001285952A (en) 2000-03-31 2000-03-31 Incoming call restriction control method for mobile telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000098155A JP2001285952A (en) 2000-03-31 2000-03-31 Incoming call restriction control method for mobile telephone set

Publications (1)

Publication Number Publication Date
JP2001285952A true JP2001285952A (en) 2001-10-12

Family

ID=18612673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000098155A Withdrawn JP2001285952A (en) 2000-03-31 2000-03-31 Incoming call restriction control method for mobile telephone set

Country Status (1)

Country Link
JP (1) JP2001285952A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6987978B2 (en) 2002-07-09 2006-01-17 Hitachi, Ltd. Wireless communication restriction device, repeater and base station
WO2009125822A1 (en) * 2008-04-07 2009-10-15 Canon Kabushiki Kaisha Communication apparatus and method for controlling the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6987978B2 (en) 2002-07-09 2006-01-17 Hitachi, Ltd. Wireless communication restriction device, repeater and base station
WO2009125822A1 (en) * 2008-04-07 2009-10-15 Canon Kabushiki Kaisha Communication apparatus and method for controlling the same
US20110053564A1 (en) * 2008-04-07 2011-03-03 Canon Kabushiki Kaisha Communication apparatus and method for controlling the same
US8774771B2 (en) 2008-04-07 2014-07-08 Canon Kabushiki Kaisha Communication apparatus and method for controlling the same
US9332115B2 (en) 2008-04-07 2016-05-03 Canon Kabushiki Kaisha Communication apparatus and method for controlling the same

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