JP2007189348A - Communication system, communication host, communication terminal, and communication method - Google Patents

Communication system, communication host, communication terminal, and communication method Download PDF

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JP2007189348A
JP2007189348A JP2006004037A JP2006004037A JP2007189348A JP 2007189348 A JP2007189348 A JP 2007189348A JP 2006004037 A JP2006004037 A JP 2006004037A JP 2006004037 A JP2006004037 A JP 2006004037A JP 2007189348 A JP2007189348 A JP 2007189348A
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communication
setting information
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communication path
host
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Katsuya Toyofuku
克也 豊福
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Fujifilm Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To simply and quickly ensure the security of communication between communication apparatuses. <P>SOLUTION: A communication setup information generating section 13 of a digital camera 10 generates communication setup information required for establishing communication between a second DSC side communication section 12 and a second printer side communication section 22 (A2). A first DSC side communication section 11 of the digital camera 10 transmits the generated communication setup information to a printer 20 (A3). A first printer side communication section 21 of the printer 20 receives the communication setup information transmitted from the first DSC side communication section 11 (A4). A communication setup section 23 of the printer 20 sets information required for establishing the communication with the second DSC side communication section 12 to the second printer side communication section 22 on the basis of the communication setup information received by the first printer side communication section 21 (B2). The second DSC side communication section 12 of the digital camera 10 and the second printer side communication section 22 of the printer 20 establish the communication with each other by means of the common communication setup information (A4, B3). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、指向性を有する通信経路によって通信設定情報を送受信する通信システムに関する。   The present invention relates to a communication system that transmits and receives communication setting information through a communication path having directivity.

従来、通信システムを構成する端末相互に共通する通信設定情報を双方の端末に登録して通信のセキュリティを確保する技術が存在する。例えば特許文献１によると、指紋センサを用いて指紋データを発生し、この指紋データに基づいて個人識別番号を算出し、この個人識別番号を使用して、無線通信機器同士の間でデータを暗号化して送受信する。
特開２００１−１８６１２３号公報 Conventionally, there is a technique for ensuring communication security by registering communication setting information common to terminals constituting a communication system in both terminals. For example, according to Patent Document 1, fingerprint data is generated using a fingerprint sensor, a personal identification number is calculated based on the fingerprint data, and data is encrypted between wireless communication devices using the personal identification number. Send and receive.
JP 2001-186123 A

特許文献１の技術では、双方の機器に指紋情報を登録する必要があり煩わしい。また、通信設定情報の登録に関する知識がある程度ないと、どのような通信設定情報を登録すべきか判断がつかず、ユーザにとって手間である。本発明はこのような問題点に鑑みてなされたもので、その目的は、通信機器同士の通信の安全性を簡単かつ迅速に確保するための技術を提供することにある。   In the technique of Patent Document 1, it is necessary to register fingerprint information in both devices, which is troublesome. Further, if there is no knowledge about registration of communication setting information, it is difficult to determine what kind of communication setting information should be registered, which is troublesome for the user. The present invention has been made in view of such problems, and an object thereof is to provide a technique for simply and quickly ensuring the safety of communication between communication devices.

上記課題を解決するため、本発明に係る通信システムは、指向性を有する第１の通信経路および指向性を有さない第２の通信経路を介して通信端末と通信ホストとが通信を行う通信システムであって、通信ホストは、第２の通信経路を介した通信端末との通信の成立に必要な通信設定情報を、第１の通信経路を介して通信端末から受信し、第１の通信経路を介して受信した通信設定情報に基づいて第２の通信経路を介した通信端末との通信に必要な情報を設定し、かつ少なくとも第２の通信経路を介し、通信端末との間で通信設定情報以外の情報を送受信する。   In order to solve the above problems, a communication system according to the present invention is a communication in which a communication terminal and a communication host communicate via a first communication path having directivity and a second communication path having no directivity. The communication host receives communication setting information necessary for establishing communication with the communication terminal via the second communication path from the communication terminal via the first communication path. Information necessary for communication with the communication terminal via the second communication path is set based on the communication setting information received via the path, and communication is established with the communication terminal via at least the second communication path. Send and receive information other than configuration information.

この発明によると、通信ホストは、第１の通信経路を介して通信設定情報を受信すると、これを指向性のない第２の通信経路を介した通信の成立に必要な情報に設定する。以後、通信端末と通信ホストとは、共通の通信設定情報によって第２の通信経路を介した通信を成立させ、画像ファイルその他各種のデータ（ただし通信設定情報を除く）の送受信を行う。第１の通信経路では、それが遮られるなどの明白な動作が行われない限り通信設定情報が漏洩する可能性は低い。このため、第２の通信経路を介した通信のセキュリティを簡単に高めることができる。   According to the present invention, when the communication host receives the communication setting information via the first communication path, the communication host sets it as information necessary for establishing communication via the second communication path having no directivity. Thereafter, the communication terminal and the communication host establish communication through the second communication path based on the common communication setting information, and transmit / receive image files and other various data (except for the communication setting information). In the first communication path, there is a low possibility that the communication setting information is leaked unless an obvious operation such as blocking is performed. For this reason, the security of communication via the second communication path can be easily increased.

通信端末は第２の通信経路を介した通信を開始する指示が入力されたことに応じ、第１の通信経路を介して通信設定情報を通信ホストに送信するとよい。   The communication terminal may transmit the communication setting information to the communication host via the first communication path in response to the input of an instruction to start communication via the second communication path.

さらに、通信端末は、第２の通信経路を介した通信を開始する指示が入力されるごとに通信設定情報の全部または一部を生成して通信ホストに送信するとよい。   Further, the communication terminal may generate all or part of the communication setting information and transmit it to the communication host each time an instruction to start communication via the second communication path is input.

ユーザが第２の通信経路を介した通信を開始したいときに通信設定情報を動的に生成して送れば、ユーザが通信を開始するたびにいちいち自分で通信設定情報を決めてやる必要もない。しかも、通信を開始するたびに通信設定情報が変わるから、第２の通信経路を介した通信の安全性が高まる。   If the user wants to start communication via the second communication path, if the communication setting information is dynamically generated and sent, it is not necessary to determine the communication setting information each time the user starts communication. . In addition, since the communication setting information changes every time communication is started, the safety of communication via the second communication path is increased.

通信端末は、第２の通信経路を介した通信を開始する指示が入力された時点における日付または時間に基づいて通信設定情報を生成してもよい。   The communication terminal may generate the communication setting information based on the date or time when the instruction to start communication via the second communication path is input.

あるいは通信端末は、第２の通信経路を介した通信を開始する指示が入力されるごとに生成される乱数に基づいて通信設定情報を生成してもよい。   Or a communication terminal may produce | generate communication setting information based on the random number produced | generated every time the instruction | indication which starts communication via a 2nd communication path | route is input.

こうすると、簡単に通信設定情報を動的に生成できる。   In this way, communication setting information can be dynamically generated easily.

また、本発明は、指向性を有する第１の通信経路および指向性を有さない第２の通信経路を介して通信端末と通信を行う通信ホストにおいて、第２の通信経路を介した通信端末との通信の成立に必要な通信設定情報を、第１の通信経路を介して通信端末から受信し、第１の通信経路を介して受信した通信設定情報に基づいて第２の通信経路を介した通信端末との通信の成立に必要な情報を設定し、かつ少なくとも第２の通信経路を介し、通信端末との間で通信設定情報以外の情報を送受信する。   Further, the present invention provides a communication host that communicates with a communication terminal via a first communication path having directivity and a second communication path having no directivity, and the communication terminal via the second communication path. Communication setting information necessary for establishment of communication with the communication terminal is received from the communication terminal via the first communication path, and is transmitted via the second communication path based on the communication setting information received via the first communication path. Information necessary for establishing communication with the communication terminal is set, and information other than the communication setting information is transmitted / received to / from the communication terminal via at least the second communication path.

また、本発明は、指向性を有する第１の通信経路および指向性を有さない第２の通信経路を介して通信ホストと通信を行う通信端末において、第２の通信経路を介した通信ホストとの通信の成立に必要な通信設定情報を生成し、通信設定情報を第１の通信経路を介して通信ホストに送信し、通信設定情報に基づいて第２の通信経路を介した通信ホストとの通信を成立させ、少なくとも第２の通信経路を介し、通信ホストとの間で通信設定情報以外の情報を送受信する。   The present invention also provides a communication terminal that communicates with a communication host via a first communication path having directivity and a second communication path having no directivity, and a communication host via the second communication path. Communication setting information necessary for establishing communication with the communication host, and transmitting the communication setting information to the communication host via the first communication path, and the communication host via the second communication path based on the communication setting information Is established, and information other than the communication setting information is transmitted / received to / from the communication host via at least the second communication path.

また、本発明に係る通信方法は、指向性を有する第１の通信経路および指向性を有さない第２の通信経路を介して通信端末と通信ホストとが通信を行う通信システムで、通信ホストは、第２の通信経路を介した通信端末との通信の成立に必要な通信設定情報を、第１の通信経路を介して通信端末から受信し、第１の通信経路を介して受信した通信設定情報に基づいて第２の通信経路を介した通信端末との通信に必要な情報を設定し、かつ少なくとも第２の通信経路を介し、通信端末との間で通信設定情報以外の情報を送受信する。   The communication method according to the present invention is a communication system in which a communication terminal communicates with a communication host via a first communication path having directivity and a second communication path having no directivity. Receives communication setting information necessary for establishing communication with a communication terminal via the second communication path from the communication terminal via the first communication path, and received via the first communication path. Information necessary for communication with the communication terminal via the second communication path is set based on the setting information, and information other than the communication setting information is transmitted / received to / from the communication terminal via at least the second communication path. To do.

なお、一例として、第１の通信経路は、IrDA(Infrared Data Association)準拠の赤外線通信で構成される。また、一例として、第２の通信経路は、無線ＬＡＮ通信、Bluetooth、ＵＷＢ(Ultra Wide Band)通信またはＬＥＤ可視光通信で構成される。   As an example, the first communication path is configured by infrared communication conforming to IrDA (Infrared Data Association). As an example, the second communication path is configured by wireless LAN communication, Bluetooth, UWB (Ultra Wide Band) communication, or LED visible light communication.

この発明によると、通信ホストは、第１の通信経路を介して通信設定情報を受信すると、これを指向性のない第２の通信経路を介した通信の成立に必要な情報に設定する。以後、通信端末と通信ホストとは、共通の通信設定情報によって第２の通信経路を介した通信を成立させ、画像ファイルその他各種のデータ（ただし通信設定情報を除く）の送受信を行う。第１の通信経路では、それが遮られるなどの明白な動作が行われない限り通信設定情報が漏洩する可能性は低い。このため、双方の通信機器に共通の通信設定情報を登録するといった面倒な操作を必要とせず、第２の通信経路を介した通信のセキュリティを簡単に高めることができる。   According to the present invention, when the communication host receives the communication setting information via the first communication path, the communication host sets it as information necessary for establishing communication via the second communication path having no directivity. Thereafter, the communication terminal and the communication host establish communication through the second communication path based on the common communication setting information, and transmit / receive image files and other various data (except for the communication setting information). In the first communication path, there is a low possibility that the communication setting information is leaked unless an obvious operation such as blocking is performed. For this reason, the troublesome operation of registering communication setting information common to both communication devices is not required, and the security of communication via the second communication path can be easily increased.

以下、添付した図面を参照し本発明の好ましい実施の形態を説明する。   Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

図１は本発明の好ましい実施形態に係る通信システムの概略説明図である。この通信システムは、デジタルカメラ１０とプリンタ２０から構成される。   FIG. 1 is a schematic explanatory diagram of a communication system according to a preferred embodiment of the present invention. This communication system includes a digital camera 10 and a printer 20.

図２はデジタルカメラ１０とプリンタ２０の要部ブロック構成図である。   FIG. 2 is a block diagram of the main parts of the digital camera 10 and the printer 20.

デジタルカメラ１０は、情報選択ボタン（上下左右ボタンなど）および情報確定ボタン（ＯＫボタンなど）などの操作ボタンやタッチパネルなど、各種の手動操作入力装置で構成された操作部１４、操作部１４への所定の手動入力操作に基づいて後述する通信設定情報を生成する通信設定情報生成部１３、通信設定情報生成部１３の生成した通信設定情報をプリンタ２０に送信する第１デジタルカメラ側通信部（第１ＤＳＣ側通信部）１１、スマートメディアなどの各種記憶媒体で構成された記憶部１５、被写体像を光電変換することで得た画像データをExif(Exchangeable Image File Format)などの各種画像ファイル規格に従って記憶部１５に記憶する撮像部１６、通信設定情報以外の各種情報、例えば記憶部１５に記憶された画像ファイルやテキストファイルをプリンタ２０に送信する第２デジタルカメラ側通信部（第２ＤＳＣ側通信部）１２を備える。   The digital camera 10 includes an operation button 14 such as an information selection button (such as an up / down / left / right button) and an information confirmation button (such as an OK button) and a touch panel. A communication setting information generating unit 13 that generates communication setting information, which will be described later, based on a predetermined manual input operation, and a first digital camera side communication unit (the first communication unit) that transmits the communication setting information generated by the communication setting information generating unit 13 to the printer 20. 1DSC side communication unit) 11, storage unit 15 configured with various storage media such as smart media, and image data obtained by photoelectrically converting the subject image according to various image file standards such as Exif (Exchangeable Image File Format) Various information other than the imaging unit 16 and communication setting information stored in the unit 15, for example, image files and text stored in the storage unit 15 Second digital camera-side communication unit for transmitting Airu to the printer 20 comprises a (first 2DSC side communication unit) 12.

プリンタ２０は、第１ＤＳＣ側通信部１１から送信された通信設定情報を受信する第１プリンタ側通信部２１、第１プリンタ側通信部２１の受信した通信設定情報に従って第２ＤＳＣ側通信部１２との通信成立に必要な情報を第２プリンタ側通信部２２に設定する通信設定部２３、通信設定部２３の設定に従って第２ＤＳＣ側通信部１２との通信を成立させ、第２ＤＳＣ側通信部１２から送信された通信設定情報以外の各種情報を受信する第２プリンタ側通信部２２、第２プリンタ側通信部２２の受信した各種情報、特に画像ファイルに記録された被写体像をインスタックスデジタルフイルムなどの各種印画媒体に印画するプリント部２４を備える。   The printer 20 receives the communication setting information transmitted from the first DSC communication unit 11, and communicates with the second DSC communication unit 12 according to the communication setting information received by the first printer communication unit 21. A communication setting unit 23 that sets information necessary for communication establishment in the second printer side communication unit 22, communication with the second DSC side communication unit 12 is established according to the setting of the communication setting unit 23, and transmission is performed from the second DSC side communication unit 12. The second printer side communication unit 22 that receives various information other than the communication setting information that has been received, the various types of information received by the second printer side communication unit 22, particularly the subject image recorded in the image file, such as in-stacks digital film A printing unit 24 for printing on a printing medium is provided.

本実施形態において、第１ＤＳＣ側通信部１１と第１プリンタ側通信部２１とは、IrDA(Infrared Data Association)準拠の赤外線通信などの指向性通信を行う。また、第２ＤＳＣ側通信部１２と第２プリンタ側通信部２２とは、無線ＬＡＮ通信、Bluetooth、ＵＷＢ(Ultra Wide Band)通信、ＬＥＤ可視光通信などの非指向性通信を行う。   In the present embodiment, the first DSC side communication unit 11 and the first printer side communication unit 21 perform directional communication such as IrDA (Infrared Data Association) compliant infrared communication. The second DSC side communication unit 12 and the second printer side communication unit 22 perform non-directional communication such as wireless LAN communication, Bluetooth, UWB (Ultra Wide Band) communication, LED visible light communication, and the like.

以下、図３のフローチャートに従い、本通信システムの動作の流れを説明する。   The operation flow of the communication system will be described below with reference to the flowchart of FIG.

デジタルカメラ１０の操作部１４は、記憶部１５に記憶された画像ファイルのうちプリンタ２０でプリントしたい任意の画像ファイルの選択を受け付ける。プリントしたい画像ファイルは、画像を縮小して一覧表示し、その中から選びたい画像にカーソルを移動させて選ばせるとよい。そして、プリントしたい画像ファイルを確定する指示（例えば所定の情報確定ボタンの押下やメニュー画面でのコマンド選択）が操作部１４に入力された場合、通信設定情報生成部１３はプリントしたい画像ファイルをプリンタ２０に送信してプリントする指示（プリント指示）が入力されたものと判断する（Ａ１で“Ｙ”）。   The operation unit 14 of the digital camera 10 accepts selection of an arbitrary image file to be printed by the printer 20 among the image files stored in the storage unit 15. The image files you want to print can be selected by reducing the images and displaying a list, and moving the cursor to the image you want to select. When an instruction for confirming an image file to be printed (for example, pressing a predetermined information confirmation button or selecting a command on a menu screen) is input to the operation unit 14, the communication setting information generation unit 13 selects the image file to be printed by a printer. It is determined that an instruction (print instruction) to be transmitted and printed to 20 has been input ("Y" in A1).

デジタルカメラ１０の通信設定情報生成部１３は、プリント指示が入力されたと判断すると、第２ＤＳＣ側通信部１２と第２プリンタ側通信部２２との通信の成立に必要な通信設定情報を生成する（Ａ２）。これと同時に、通信設定情報生成部１３は、生成された通信設定情報を、第２ＤＳＣ側通信部１２に設定する。   When the communication setting information generation unit 13 of the digital camera 10 determines that a print instruction has been input, the communication setting information generation unit 13 generates communication setting information necessary for establishing communication between the second DSC side communication unit 12 and the second printer side communication unit 22 ( A2). At the same time, the communication setting information generation unit 13 sets the generated communication setting information in the second DSC side communication unit 12.

例えば、第２ＤＳＣ側通信部１２と第２プリンタ側通信部２２とがIEEE 802.11シリーズの無線LAN通信を行うのであれば、プリンタ２０がデジタルカメラ１０を一意に識別するためのＥＳＳＩＤ（Extended Service Set Identifier）を生成する。あるいは、第２ＤＳＣ側通信部１２と第２プリンタ側通信部２２とがＷＥＰ（Wired Equivalent Privacy）により送信データを暗号化する場合は、ＷＥＰキーを生成する。   For example, if the second DSC communication unit 12 and the second printer communication unit 22 perform IEEE 802.11 series wireless LAN communication, the printer 20 uniquely identifies the digital camera 10 with an ESSID (Extended Service Set Identifier). ) Is generated. Alternatively, when the second DSC side communication unit 12 and the second printer side communication unit 22 encrypt transmission data by WEP (Wired Equivalent Privacy), a WEP key is generated.

通信設定情報は、プリント指示が入力されたと判断されるごとに動的に生成される。通信設定情報を動的に生成するには、例えばプリント指示が入力される度に擬似乱数発生アルゴリズムを実行して乱数を発生させ、この乱数をＥＳＳＩＤやＷＥＰキーの一部または全部とする。あるいは、プリント指示が入力されたと判断された時点の日付や時刻を図示しないＲＴＣ（Realtime clock）から取得し、その一部または全部をＥＳＳＩＤやＷＥＰキーとする。あるいは、ＲＴＣから取得した日付や時刻を乱数種として乱数を発生させ、この乱数をＥＳＳＩＤやＷＥＰキーの一部または全部とする。   The communication setting information is dynamically generated every time it is determined that a print instruction has been input. In order to dynamically generate the communication setting information, for example, a pseudo random number generation algorithm is executed every time a print instruction is input, and a random number is generated, and this random number is used as a part or all of the ESSID and WEP key. Alternatively, the date and time when it is determined that the print instruction is input is obtained from an RTC (Realtime clock) (not shown), and part or all of the date and time is used as an ESSID or WEP key. Alternatively, a random number is generated using the date and time acquired from the RTC as a random number seed, and this random number is used as a part or all of the ESSID and WEP key.

デジタルカメラ１０の第１ＤＳＣ側通信部１１は、生成された通信設定情報を、プリンタ２０に送信する（Ａ３）。   The first DSC side communication unit 11 of the digital camera 10 transmits the generated communication setting information to the printer 20 (A3).

プリンタ２０の第１プリンタ側通信部２１は、第１ＤＳＣ側通信部１１の送信した通信設定情報を受信する（Ａ４）。第１ＤＳＣ側通信部１１と第１プリンタ側通信部２１との通信は、指向性を有するため、両者の通信経路を遮るなど一見して明白な情報盗取動作を行わない限り、通信設定情報の盗取は困難である。このため、通信設定情報の秘匿性は高い。   The first printer side communication unit 21 of the printer 20 receives the communication setting information transmitted from the first DSC side communication unit 11 (A4). Since the communication between the first DSC side communication unit 11 and the first printer side communication unit 21 has directivity, unless the information stealing operation is apparent at first glance such as blocking the communication path of both, the communication setting information Theft is difficult. For this reason, the confidentiality of communication setting information is high.

プリンタ２０の通信設定部２３は、第１プリンタ側通信部２１の受信した通信設定情報に基づき、第２ＤＳＣ側通信部１２との通信成立に必要な情報（ＥＳＳＩＤやＷＥＰキーなど）を第２プリンタ側通信部２２に設定する（Ｂ２）。あわせて、通信設定情報に基づいて、第１ＤＳＣ側通信部１１との今後の通信成立に必要な情報を第１プリンタ側通信部２１に設定してもよい。   Based on the communication setting information received by the first printer-side communication unit 21, the communication setting unit 23 of the printer 20 transmits information (such as an ESSID and a WEP key) necessary for establishing communication with the second DSC-side communication unit 12 to the second printer. Set in the side communication unit 22 (B2). In addition, information necessary for establishing future communication with the first DSC side communication unit 11 may be set in the first printer side communication unit 21 based on the communication setting information.

デジタルカメラ１０の第２ＤＳＣ側通信部１２とプリンタ２０の第２プリンタ側通信部２２とは、共通の通信設定情報によって通信を成立させる（Ａ４、Ｂ３）。通信を成立させるとは、デジタルカメラ１０の第２ＤＳＣ側通信部１２から送られたＥＳＳＩＤが第２プリンタ側通信部２２に設定されたＥＳＳＩＤと共通する場合に通信を確立させること、あるいは通信データ本体を共通のＷＥＰキーによって暗号化・復号化させることを含む。   The second DSC side communication unit 12 of the digital camera 10 and the second printer side communication unit 22 of the printer 20 establish communication by common communication setting information (A4, B3). Establishing communication means establishing communication when the ESSID sent from the second DSC side communication unit 12 of the digital camera 10 is the same as the ESSID set in the second printer side communication unit 22, or the communication data body Encryption / decryption with a common WEP key.

通信が成立すると、デジタルカメラ１０の第２ＤＳＣ側通信部１２は、プリント指示のあった画像ファイルをプリンタ２０に送信する（Ａ５）。なお、第２ＤＳＣ側通信部１２と第２プリンタ側通信部２２との通信が成立していなければ、画像ファイルを正常に送受信することはできない。   When the communication is established, the second DSC side communication unit 12 of the digital camera 10 transmits the image file instructed to be printed to the printer 20 (A5). If communication between the second DSC side communication unit 12 and the second printer side communication unit 22 is not established, the image file cannot be normally transmitted and received.

プリンタ２０の第２プリンタ側通信部２２は、第２ＤＳＣ側通信部１２から送信された画像ファイルを受信する（Ｂ４）。ただし、第１ＤＳＣ側通信部１１から画像ファイルを送信し、これを第１プリンタ側通信部２１で受信してもよい。   The second printer side communication unit 22 of the printer 20 receives the image file transmitted from the second DSC side communication unit 12 (B4). However, the image file may be transmitted from the first DSC communication unit 11 and received by the first printer communication unit 21.

プリンタ２０のプリント部２４は、第２プリンタ側通信部２２の受信した画像ファイルから画像データを展開してプリントデータに変換し、インクジェット、熱転写、レーザなどの各種印画方式で画像を印画媒体に記録する（Ｂ５）。   The printing unit 24 of the printer 20 develops image data from the image file received by the second printer side communication unit 22 and converts it into print data, and records the image on a printing medium by various printing methods such as inkjet, thermal transfer, and laser. (B5).

以上説明した通り、本発明のデジタルカメラ１０は、指向性のある第１ＤＳＣ側通信部１１により通信設定情報をプリンタ２０に送る。プリンタ２０の第１プリンタ側通信部２１は、指向性のある第１ＤＳＣ側通信部１１から通信設定情報を受信する。この過程では、通信経路が遮られるなどの明白な動作が行われない限り通信設定情報が漏洩する可能性は低い。   As described above, the digital camera 10 of the present invention sends communication setting information to the printer 20 by the first DSC side communication unit 11 having directivity. The first printer side communication unit 21 of the printer 20 receives the communication setting information from the first DSC side communication unit 11 having directivity. In this process, the communication setting information is unlikely to leak unless an obvious operation such as blocking the communication path is performed.

第１プリンタ側通信部２１は、第１ＤＳＣ側通信部１１からの通信設定情報を受信すると、これを指向性のない第２プリンタ側通信部２２の通信に必要な情報として設定する。以後、第２ＤＳＣ側通信部１２と第２プリンタ側通信部２２とは、共通の通信設定情報によって通信を成立させ、画像ファイルその他各種のデータ（ただし通信設定情報を除く）の送受信を行う。すなわち、指向性のある第１ＤＳＣ側通信部１１によって通信設定情報を事前に送ることで、指向性のない第２ＤＳＣ側通信部１２と第２プリンタ側通信部２２との通信セキュリティを簡単に高めることができる。   When receiving the communication setting information from the first DSC side communication unit 11, the first printer side communication unit 21 sets this as information necessary for communication of the second printer side communication unit 22 having no directivity. Thereafter, the second DSC side communication unit 12 and the second printer side communication unit 22 establish communication with the common communication setting information, and perform transmission and reception of image files and other various data (except for the communication setting information). In other words, communication security between the second DSC side communication unit 12 and the second printer side communication unit 22 having no directivity can be easily increased by sending the communication setting information in advance by the first DSC side communication unit 11 having directivity. Can do.

また、本実施形態のデジタルカメラ１０は、プリント指示の入力に応じて自動的に通信設定情報を生成し、これをプリンタ２０に送信する。このため、従来のように、いちいち操作者が通信の度に通信設定情報を決めてやる必要がなく、迅速かつ安全に通信を確立することができる。   In addition, the digital camera 10 according to the present embodiment automatically generates communication setting information in response to an input of a print instruction, and transmits this to the printer 20. For this reason, unlike the prior art, it is not necessary for the operator to determine the communication setting information for each communication, and communication can be established quickly and safely.

また、通信設定情報は、プリント指示の入力に応じてその都度動的に生成されるから、万が一通信設定情報が漏洩してもその不正利用は困難であり、通信の安全度は高い。   Further, since the communication setting information is dynamically generated in response to an input of a print instruction, unauthorized use is difficult even if the communication setting information is leaked, and the safety of communication is high.

図３の動作Ａ２〜Ａ４を実行する主体はデジタルカメラ１０に限る必要はなく、パソコン、ＰＤＡ、携帯電話などの各種通信端末であってもよい。また、図３の動作Ｂ１〜Ｂ３を実行する主体はプリンタ２０に限る必要はなく、パソコン、サーバ、店頭プリント端末、キオスク端末、画像ストレージ装置などの各種通信ホストであってもよい。   3 is not limited to the digital camera 10, and may be various communication terminals such as a personal computer, a PDA, and a mobile phone. 3 is not limited to the printer 20, and may be various communication hosts such as a personal computer, a server, a storefront print terminal, a kiosk terminal, and an image storage device.

本発明の好ましい実施形態に係る通信システムの概略構成図1 is a schematic configuration diagram of a communication system according to a preferred embodiment of the present invention. 通信システムの要部ブロック構成図Block diagram of main parts of communication system 通信システムの実行する動作の流れを示すフローチャートThe flowchart which shows the flow of the operation | movement which a communication system performs

符号の説明Explanation of symbols

１０：カメラ、１１：第１デジタルカメラ側通信部、１２：第２デジタルカメラ側通信部、１３：通信設定情報生成部、２０：プリンタ、２１：第１プリンタ側通信部、２２：第２プリンタ側通信部、２３：通信設定部 10: Camera, 11: First digital camera side communication unit, 12: Second digital camera side communication unit, 13: Communication setting information generation unit, 20: Printer, 21: First printer side communication unit, 22: Second printer Side communication unit, 23: communication setting unit

Claims (8)

指向性を有する第１の通信経路および指向性を有さない第２の通信経路を介して通信端末と通信ホストとが通信を行う通信システムであって、
前記通信ホストは、前記第２の通信経路を介した前記通信端末との通信の成立に必要な通信設定情報を、前記第１の通信経路を介して前記通信端末から受信し、前記第１の通信経路を介して受信した通信設定情報に基づいて前記第２の通信経路を介した前記通信端末との通信に必要な情報を設定し、かつ少なくとも前記第２の通信経路を介し、前記通信端末との間で前記通信設定情報以外の情報を送受信する通信システム。 A communication system in which a communication terminal and a communication host communicate via a first communication path having directivity and a second communication path having no directivity,
The communication host receives communication setting information necessary for establishing communication with the communication terminal via the second communication path from the communication terminal via the first communication path, and Based on the communication setting information received via the communication path, information necessary for communication with the communication terminal via the second communication path is set, and at least via the second communication path, the communication terminal A communication system that transmits / receives information other than the communication setting information to / from. 前記通信端末は前記第２の通信経路を介した通信を開始する指示が入力されたことに応じ、前記第１の通信経路を介して前記通信設定情報を前記通信ホストに送信する請求項１に記載の通信システム。   The communication terminal transmits the communication setting information to the communication host via the first communication path in response to an instruction to start communication via the second communication path being input. The communication system described. 前記通信端末は、前記第２の通信経路を介した通信を開始する指示が入力されるごとに前記通信設定情報の全部または一部を生成して前記通信ホストに送信する請求項２に記載の通信システム。   The said communication terminal produces | generates all or one part of the said communication setting information, and transmits to the said communication host, whenever the instruction | indication which starts the communication via the said 2nd communication path | route is input. Communications system. 前記通信端末は、前記第２の通信経路を介した通信を開始する指示が入力された時点における日付または時間に基づいて前記通信設定情報を生成する請求項３に記載の通信システム。   4. The communication system according to claim 3, wherein the communication terminal generates the communication setting information based on a date or time at a time when an instruction to start communication via the second communication path is input. 前記通信端末は、前記第２の通信経路を介した通信を開始する指示が入力されるごとに生成される乱数に基づいて前記通信設定情報を生成する請求項３に記載の通信システム。   The communication system according to claim 3, wherein the communication terminal generates the communication setting information based on a random number generated every time an instruction to start communication via the second communication path is input. 指向性を有する第１の通信経路および指向性を有さない第２の通信経路を介して通信端末と通信を行う通信ホストであって、
前記第２の通信経路を介した前記通信端末との通信の成立に必要な通信設定情報を、前記第１の通信経路を介して前記通信端末から受信し、前記第１の通信経路を介して受信した通信設定情報に基づいて前記第２の通信経路を介した前記通信端末との通信の成立に必要な情報を設定し、かつ少なくとも前記第２の通信経路を介し、前記通信端末との間で前記通信設定情報以外の情報を送受信する通信ホスト。 A communication host for communicating with a communication terminal via a first communication path having directivity and a second communication path having no directivity;
Communication setting information necessary for establishing communication with the communication terminal via the second communication path is received from the communication terminal via the first communication path, and via the first communication path. Based on the received communication setting information, information necessary for establishing communication with the communication terminal via the second communication path is set, and at least between the communication terminal via the second communication path. A communication host for transmitting and receiving information other than the communication setting information. 指向性を有する第１の通信経路および指向性を有さない第２の通信経路を介して通信ホストと通信を行う通信端末であって、
前記第２の通信経路を介した前記通信ホストとの通信の成立に必要な通信設定情報を生成し、前記通信設定情報を前記第１の通信経路を介して前記通信ホストに送信し、前記通信設定情報に基づいて前記第２の通信経路を介した前記通信ホストとの通信を成立させ、少なくとも前記第２の通信経路を介し、前記通信ホストとの間で前記通信設定情報以外の情報を送受信する通信端末。 A communication terminal that communicates with a communication host via a first communication path having directivity and a second communication path having no directivity,
Generating communication setting information necessary for establishing communication with the communication host via the second communication path, transmitting the communication setting information to the communication host via the first communication path, and Establish communication with the communication host via the second communication path based on setting information, and send / receive information other than the communication setting information to / from the communication host via at least the second communication path Communication terminal. 指向性を有する第１の通信経路および指向性を有さない第２の通信経路を介して通信端末と通信ホストとが通信を行う通信システムで用いられる通信方法であって、
前記通信ホストは、前記第２の通信経路を介した前記通信端末との通信の成立に必要な通信設定情報を、前記第１の通信経路を介して前記通信端末から受信し、前記第１の通信経路を介して受信した通信設定情報に基づいて前記第２の通信経路を介した前記通信端末との通信に必要な情報を設定し、かつ少なくとも前記第２の通信経路を介し、前記通信端末との間で前記通信設定情報以外の情報を送受信する通信方法。 A communication method used in a communication system in which a communication terminal and a communication host communicate via a first communication path having directivity and a second communication path having no directivity,
The communication host receives communication setting information necessary for establishing communication with the communication terminal via the second communication path from the communication terminal via the first communication path, and Based on the communication setting information received via the communication path, information necessary for communication with the communication terminal via the second communication path is set, and at least via the second communication path, the communication terminal A communication method for transmitting / receiving information other than the communication setting information to / from.
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