JP2005236569A - Terminal equipment for catv and bidirectional catv system - Google Patents

Terminal equipment for catv and bidirectional catv system Download PDF

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JP2005236569A
JP2005236569A JP2004041932A JP2004041932A JP2005236569A JP 2005236569 A JP2005236569 A JP 2005236569A JP 2004041932 A JP2004041932 A JP 2004041932A JP 2004041932 A JP2004041932 A JP 2004041932A JP 2005236569 A JP2005236569 A JP 2005236569A
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catv
signal receiver
bidirectional communication
broadcast signal
bidirectional
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JP4423064B2 (en
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Jun Uemura
順 植村
Chikasuke Noiri
慎祐 野入
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Maspro Denkoh Corp
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Maspro Denkoh Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide terminal equipment for CATV (Cable-Television) having a signal distribution means controlled so that communication by a broadcasting signal receiver is preferentially established out of devices connected to a bidirectional telecommunication apparatus, where, the broadcasting signal receiver and the bidirectional communication apparatus are connected to a CATV transmission line, and the broadcasting signal receiver is connected to the bidirectional communication apparatus through a connection line transmitting a digital signal, and bidirectional communication is available between a CATV network and an outside field even from devices connected to the bidirectional communication apparatus, and from the broadcasting signal receiver. <P>SOLUTION: The terminal equipment for CATV is provided with a cable modem having a function of recognizing the MAC (Medium Access Control) address of the device connected to each terminal of a switching hub and storing the related information and a function of controlling the number of terminals communicable with the switching hub, and the like based on communication approval information transmitted from a CATV center station. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は，主にＣＡＴＶシステムに利用されるケーブルモデムを内蔵するＣＡＴＶ用端末装置に関し，詳しくはセットトップボックスに内蔵されたケーブルモデムの信号接続の制御方法に関する。
The present invention relates to a CATV terminal apparatus incorporating a cable modem mainly used in a CATV system, and more particularly to a signal connection control method for a cable modem incorporated in a set top box.

従来のＣＡＴＶシステムの場合，ＣＡＴＶセンター局及びＣＡＴＶセンター局を介してＣＡＴＶ網の内部及び外部と双方向通信をするために加入者宅に設けたケーブルモデムと，テレビ信号の受信のために設けたセットトップボックスはそれぞれ独立して動作していた。
（例えば，特許文献１参照）
In the case of a conventional CATV system, a cable modem provided in a subscriber's house for bidirectional communication with the inside and outside of the CATV network via the CATV center station and the CATV center station, and provided for receiving TV signals. Each set-top box worked independently.
(For example, see Patent Document 1)

特開平１１−６９３３６号公報JP 11-69336 A

従来のＣＡＴＶシステムの場合，ＣＡＴＶセンター局及びＣＡＴＶセンター局を介してＣＡＴＶ網の内部及び外部と双方向通信をするために加入者宅に設けたケーブルモデムと，テレビ信号の受信のために設けたセットトップボックスはそれぞれ独立して動作していた。
セットトップボックスにケーブルモデムや信号分配器を内蔵させ，従来のセットトップボックスの機能を持つ放送信号受信機とケーブルモデムとをディジタル信号を伝送する接続線で接続しこれらの間でデータのやり取りができるようにすると，ＣＡＴＶセンター局がケーブルモデムを介して加入者宅の放送信号受信機のＭＩＢデータを収得でき，また，ＣＡＴＶセンター局から放送信号受信機に放送信号受信機の設定情報，設定変更の情報，ファームウエアのデータ等を送ることが可能となる。
また，セットトップボックスを介してセットトップボックスに接続したテレビジョン受信機で簡易的なインターネットの通信を行うことも可能となる。
In the case of a conventional CATV system, a cable modem provided in a subscriber's house for bidirectional communication with the inside and outside of the CATV network via the CATV center station and the CATV center station, and provided for receiving TV signals. Each set-top box worked independently.
A cable modem and signal distributor are built in the set-top box, and a broadcast signal receiver having the function of a conventional set-top box and a cable modem are connected by a connection line that transmits digital signals, and data can be exchanged between them. If it is possible, the CATV center station can acquire the MIB data of the broadcast signal receiver at the subscriber's home via the cable modem, and the broadcast signal receiver setting information and setting change from the CATV center station to the broadcast signal receiver. Information, firmware data, etc. can be sent.
It is also possible to perform simple Internet communication with a television receiver connected to the set top box via the set top box.

これらのような通信をするためにはケーブルモデムにスイッチングハブを接続して，ケーブルモデムに接続される機器（例えばパーソナルコンピュータ）と放送信号受信機に通信信号を分配する方法が考えられる。
このような構成の場合，ケーブルモデムの性質により，スイッチングハブに設けられた複数の端子の内，最初に通信が成立した端末の通信がそのまま継続される性質がある。
また，ＣＡＴＶ事業者はインターネットサービスを行うにあたり，加入者宅の端末の契約端末数（同時にインターネットに接続できる端末数）を規定し，制限するのが通例である。
例えば双方向通信機が通信可能な契約端末数が１の場合には，スイッチングハブに設けられた複数の端子に接続された機器の内，最初に双方向通信機に接続された機器（例えばパーソナルコンピュータ）とＣＡＴＶセンター局とで通信が成立してしまうと，放送信号受信機とＣＡＴＶセンター局との通信ができなくなるため，ＣＡＴＶセンター局は加入者宅のセットトップボックスのＭＩＢデータを収得できなくなりＣＡＴＶ端末装置における放送信号受信機の管理ができなくなるという問題があった。
In order to perform such communication, a method is considered in which a switching hub is connected to a cable modem, and a communication signal is distributed to a device (for example, a personal computer) connected to the cable modem and a broadcast signal receiver.
In the case of such a configuration, due to the nature of the cable modem, there is a nature in which the communication of the terminal with which communication is established first among the plurality of terminals provided in the switching hub is continued as it is.
Further, in order to provide Internet services, a CATV provider usually defines and limits the number of contracted terminals (number of terminals that can be connected to the Internet at the same time) of subscriber's home terminals.
For example, when the number of contracted terminals that can communicate with a bidirectional communication device is 1, among the devices connected to a plurality of terminals provided in the switching hub, the device connected first to the bidirectional communication device (for example, personal If communication is established between the computer) and the CATV center station, communication between the broadcast signal receiver and the CATV center station becomes impossible, and the CATV center station cannot acquire the MIB data of the set top box at the subscriber's house. There has been a problem that it becomes impossible to manage the broadcast signal receiver in the CATV terminal apparatus.

また，放送信号受信機に接続したテレビジョン受信機による簡易的なインターネットに対して，双方向通信機に接続された機器（例えばパーソナルコンピュータ）によるインターネットとは別料金の設定が妥当であるが，どちらかを指定して契約することができないという問題があった。
In addition, for a simple Internet by a television receiver connected to a broadcast signal receiver, it is appropriate to set a separate charge from the Internet by a device (for example, a personal computer) connected to a two-way communication device. There was a problem that it was not possible to make a contract by specifying either.

そこで本願においては，こうした問題点を解決するためになされたものであり，
その目的は，ＣＡＴＶシステムで使用されるＣＡＴＶ用端末装置において，放送信号受信機と，ＣＡＴＶセンター局及びＣＡＴＶセンター局を介してＣＡＴＶ網の内部及び外部と双方向通信をする双方向通信機を備え，
放送信号受信機と双方向通信機は共にＣＡＴＶ伝送線に接続されると共に，これら２つの装置は互いにディジタル信号を伝送する接続線で接続され，
双方向通信機に接続した機器からでも，放送信号受信機からでも，ＣＡＴＶ網の内部及び外部と双方向通信する機能を有し，放送信号受信機による前記双方向通信が双方向通信機に接続した機器による前記双方向通信に対して優先することを特徴とするＣＡＴＶ用端末装置を提供することを課題とする。
他の目的は，前記ＣＡＴＶ用端末装置において，双方向通信機に接続される機器について通信を許可する端末数を制御する機能を有することを特徴とするＣＡＴＶ用端末装置を提供することを課題とする。
他の目的は，前記ＣＡＴＶ用端末装置において,双方向通信機に接続される機器の通信の許可を選択する機能を有することを特徴とするＣＡＴＶ用端末装置を提供することを課題とする。
他の目的は，前記ＣＡＴＶ用端末装置を用いて構成したことを特徴とした双方向ＣＡＴＶシステムを提供することを課題とする。
Therefore, in this application, it was made to solve these problems.
Its purpose is a CATV terminal device used in a CATV system, including a broadcast signal receiver, a CATV center station, and a bidirectional communication device that performs bidirectional communication with the inside and outside of the CATV network via the CATV center station. ,
Both the broadcast signal receiver and the two-way communication device are connected to the CATV transmission line, and these two devices are connected to each other via a connection line for transmitting digital signals.
Whether it is a device connected to a bidirectional communication device or a broadcast signal receiver, it has a function of bidirectional communication with the inside and outside of the CATV network, and the bidirectional communication by the broadcast signal receiver is connected to the bidirectional communication device. It is an object of the present invention to provide a CATV terminal device characterized in that priority is given to the bidirectional communication by the device.
Another object of the present invention is to provide a CATV terminal apparatus characterized by having a function of controlling the number of terminals permitted to communicate with a device connected to a bidirectional communication device in the CATV terminal apparatus. To do.
Another object of the present invention is to provide a CATV terminal device characterized in that the CATV terminal device has a function of selecting permission of communication of a device connected to a bidirectional communication device.
Another object of the present invention is to provide a bidirectional CATV system characterized by using the CATV terminal device.

上記課題を解決するために，請求項1乃至請求項３の発明のＣＡＴＶ用端末装置は，信号分配器，放送信号受信機，双方向通信機，ディジタル信号を伝送する接続線で構成される。
請求項４の発明は，上記ＣＡＴＶ用端末装置の何れかを用いて双方向ＣＡＴＶシステムを構成される。
In order to solve the above-described problems, the CATV terminal device according to the first to third aspects of the present invention includes a signal distributor, a broadcast signal receiver, a bidirectional communication device, and a connection line for transmitting a digital signal.
According to a fourth aspect of the present invention, a bidirectional CATV system is configured using any one of the CATV terminal devices.

以上詳述したように，請求項１乃至請求項４の発明によれば，加入者のインターネット接続契端末数が１つの場合，スイッチングハブに接続されているものの内，優先的に放送信号受信機と通信が成立するように制御された信号分配手段を有するＣＡＴＶ端末装置の提供が可能となる。その結果，ＣＡＴＶセンター局が加入者宅の放送信号受信機のＭＩＢ情報の収得を確実に実行できるようになる。また，ＣＡＴＶセンター局から加入者宅へ送信されるセットトップボックスのファームウエアなどのデータの通信を妨げることがない。更に，契約した料金に見合った内容の通信ができるようになる。
As described in detail above, according to the first to fourth aspects of the present invention, when the number of subscribers connected to the Internet is one, the broadcast signal receiver is preferentially selected from those connected to the switching hub. It is possible to provide a CATV terminal apparatus having signal distribution means controlled so as to establish communication. As a result, the CATV center station can reliably execute the acquisition of the MIB information of the broadcast signal receiver at the subscriber's home. Further, communication of data such as set top box firmware transmitted from the CATV center station to the subscriber's home is not hindered. In addition, communication that matches the contracted fee can be performed.

以下に，本発明を具体化した実施形態の例を，図面を基に詳細に説明する。
図１は本発明に係るＣＡＴＶシステム例を示し，図２は本案のＣＡＴＶ用端末装置のブロック図を示している。
Hereinafter, an example of an embodiment embodying the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an example of a CATV system according to the present invention, and FIG. 2 shows a block diagram of a CATV terminal device according to the present invention.

図１に本発明に係るＣＡＴＶシステム例を示す。図１に示すように，ＣＡＴＶセンター局１００と加入者端末１はＣＡＴＶ網１０で接続されている。図１に示すＣＡＴＶシステム例では，説明を簡単にするためにＣＡＴＶ用端末装置１は１つだけ記載しているが，実際にはＣＡＴＶ網１０に複数のＣＡＴＶ用端末装置１が接続されている。
センター局１００において，地上波用受信アンテナ１２０，及び衛星波用受信アンテナ１１９で受信した放送信号はチューナ１０１〜１０６，変調器１０７を介して混合器１１７に入力される。一方，ＣＡＴＶ用端末装置１に内蔵された放送信号受信機２００の用動作プログラム等の信号は放送信号受信機用ダウンロードサーバー１１１からスイッチングハブ１１２，ＣＭＴＳ１１４〜１１６を介して混合器１１８に入力され，混合器１１７でされた出力信号はセンター局からＣＡＴＶ網へ送出される。センター局から送出された放送信号，放送信号受信機２００の動作プログラム等の信号やインターネットプロトコル等の通信信号，ＣＡＴＶ用端末装置の管理装置１０８との通信信号等はＣＡＴＶ網１０及びＣＡＴＶ伝送路１８により加入者宅へ伝送される。
加入者宅へ引き込まれたＣＡＴＶ伝送路１８の引込み線は信号分配器１５を介して放送信号受信機２００と双方向通信機２０１の両方に接続され，それぞれテレビジョン受像機２，パーソナルコンピュータ３に接続される。なお，放送信号受信機２００と双方向通信機２０１はディジタル信号を伝送する接続線２０２で接続されている。
FIG. 1 shows an example of a CATV system according to the present invention. As shown in FIG. 1, the CATV center station 100 and the subscriber terminal 1 are connected by a CATV network 10. In the example of the CATV system shown in FIG. 1, only one CATV terminal device 1 is shown for simplicity of explanation, but actually, a plurality of CATV terminal devices 1 are connected to the CATV network 10. .
In the center station 100, broadcast signals received by the ground wave reception antenna 120 and the satellite wave reception antenna 119 are input to the mixer 117 via the tuners 101 to 106 and the modulator 107. On the other hand, a signal such as an operation program for the broadcast signal receiver 200 incorporated in the CATV terminal device 1 is input from the broadcast signal receiver download server 111 to the mixer 118 via the switching hub 112 and the CMTSs 114 to 116. The output signal output from the mixer 117 is sent from the center station to the CATV network. A broadcast signal sent from the center station, a signal such as an operation program of the broadcast signal receiver 200, a communication signal such as an internet protocol, a communication signal with the management device 108 of the CATV terminal device, and the like are used for the CATV network 10 and the CATV transmission line 18. Is transmitted to the subscriber's home.
The lead-in line of the CATV transmission line 18 drawn into the subscriber's home is connected to both the broadcast signal receiver 200 and the two-way communication device 201 via the signal distributor 15, and is connected to the television receiver 2 and the personal computer 3, respectively. Connected. The broadcast signal receiver 200 and the bidirectional communication device 201 are connected by a connection line 202 that transmits a digital signal.

次に本発明に係る加入者宅のＣＡＴＶ用端末装置１について詳しく説明する。図１はＣＡＴＶ端末装置１の１例である。
ＣＡＴＶ用端末装置１は，信号分配手段１６，放送信号受信機２００，双方向通信機２０１，ディジタル信号を伝送する接続線２０２で構成される。図１の例では，放送信号受信機２００，双方向通信機２０１，ディジタル信号を伝送する接続線２０２が１つの筐体１１に収められている。
加入者宅へ引き込まれたＣＡＴＶ伝送線１５の引込み線は，信号分配手段１６を介して放送信号受信機２００と双方向通信機２０１の両方に接続される。
放送信号受信機２００はセンター局１００から送出された放送信号の中から希望のチャンネルを選局する受信処理部１２，受信処理部１２の出力信号をテレビジョン受像機２が扱う信号に変換するための信号処理部１７，受信処理部１２の制御や放送信号受信機２００の動作動作プログラムを受け取りやＭＩＢ情報の送信及び放送信号受信機２００でインターネットを行うための制御等を行う制御部１３，放送信号受信機２００の動作動作プログラムやその他のデータを記憶するメモリー１４で構成されている。
放送信号受信機２００に入力された信号は，受信処理部１２で希望のチャンネルが選局され，信号処理部１７でテレビジョン受像機２が扱う信号に変換されてテレビジョン受像機２に出力される。
Next, the CATV terminal device 1 at the subscriber's house according to the present invention will be described in detail. FIG. 1 shows an example of a CATV terminal device 1.
The CATV terminal device 1 includes a signal distribution means 16, a broadcast signal receiver 200, a bidirectional communication device 201, and a connection line 202 that transmits a digital signal. In the example of FIG. 1, a broadcast signal receiver 200, a bidirectional communication device 201, and a connection line 202 that transmits a digital signal are housed in one housing 11.
The lead-in line of the CATV transmission line 15 drawn into the subscriber's home is connected to both the broadcast signal receiver 200 and the two-way communication device 201 via the signal distribution means 16.
The broadcast signal receiver 200 selects a desired channel from the broadcast signals transmitted from the center station 100, and converts the output signal of the reception processor 12 into a signal handled by the television receiver 2. The control unit 13 for controlling the signal processing unit 17, the reception processing unit 12, the operation operation program of the broadcast signal receiver 200, the transmission of MIB information, the control for performing the Internet by the broadcast signal receiver 200, etc. The memory 14 stores the operation program of the signal receiver 200 and other data.
The signal input to the broadcast signal receiver 200 is tuned to a desired channel by the reception processing unit 12, converted to a signal handled by the television receiver 2 by the signal processing unit 17, and output to the television receiver 2. The

信号分配手段１６のもう一方の出力は双方向通信機２０１に接続される。
双方向通信機２０１は，マイクロコンピュータを内蔵するケーブルモデム５とスイッチングハブ４で構成されている。スイッチングハブ４は複数のディジタル信号入出力端子を有し，放送信号受信機２００及びインターネットの通信を行うための機器（例えばパーソナルコンピュータ３）等に接続される。
放送信号受信機２００と双方向通信機２０１は共にＣＡＴＶ伝送線１８に接続されると共に，これら２つの装置は互いにディジタル信号を伝送する接続線２０２で接続され，
双方向通信機２０１に接続した機器からでも，放送信号受信機２００からでも，ＣＡＴＶ網１０の内部及び外部と双方向通信することができる。
なお，放送信号受信機２００でインターネットにアクセスをする場合の操作は，ＣＡＴＶ用端末装置１を制御する図示しないリモートコントロール装置やＣＡＴＶ用端末装置１に接続する図示しない入力装置等で行われる。 The other output of the signal distribution means 16 is connected to the bidirectional communication device 201.
The bidirectional communicator 201 is composed of a cable modem 5 incorporating a microcomputer and a switching hub 4. The switching hub 4 has a plurality of digital signal input / output terminals, and is connected to a broadcast signal receiver 200 and a device (for example, a personal computer 3) for performing Internet communication.
The broadcast signal receiver 200 and the two-way communication device 201 are both connected to the CATV transmission line 18, and these two devices are connected to each other via a connection line 202 that transmits a digital signal.
It is possible to perform bidirectional communication with the inside and outside of the CATV network 10 from a device connected to the bidirectional communication device 201 and the broadcast signal receiver 200.
The operation for accessing the Internet with the broadcast signal receiver 200 is performed by a remote control device (not shown) for controlling the CATV terminal device 1 or an input device (not shown) connected to the CATV terminal device 1.

ケーブルモデム５が内蔵しているマイクロコンピュータは，スイッチングハブ４の各端子に接続されている機器のＭＡＣアドレスを認識してその情報記憶する機能，ＣＡＴＶセンター局１００から送信された通信許可情報に基づき，スイッチングハブ４を通して通信可能な端末数を制御する機能等を備えている。
スイッチングハブ４の各端子における通信の制御は次のように行われる。ＣＡＴＶ端末装置１のインターネット接続契約端末数が１の場合は，ケーブルモデム５の持つマイクロコンピュータがスイッチングハブ４を通るデータのＭＡＣアドレスを認識して放送信号受信機２００との通信を優先的に許可し，スイッチングハブ４に放送信号受信機２００の他に機器が接続されていても，それらの機器の通信は許可しない。また，ＣＡＴＶ用端末装置１のインターネット接続契端末数が１より大きいＮの場合は，放送信号受信機２００との通信が優先的に許可され，スイッチングハブ４の各端子に接続された機器の内，Ｎ−１個の機器に通信が許可される。
ＣＡＴＶ用端末装置の外部にスイッチングハブを設けて，接続する機器の台数を増やした場合でも，常に放送信号受信機２００の通信が優先的に許可され，その他の機器の通信の許可は同様に制御される。
また，双方向通信機２０１のＶＬＡＮ機能（バーチャルＬＡＮ機能）を利用して双方向通信機２０１に接続される機器の通信の許可を選択したり，ＣＡＴＶ用端末装置１に接続されたパーソナルコンピュータ３から放送信号受信機２００へのアクセスができないように制御している。
The microcomputer built in the cable modem 5 recognizes the MAC address of a device connected to each terminal of the switching hub 4 and stores the information, and communication permission information transmitted from the CATV center station 100. , A function of controlling the number of terminals that can communicate through the switching hub 4 is provided.
Control of communication at each terminal of the switching hub 4 is performed as follows. If the number of contracted terminals for the Internet connection of the CATV terminal device 1 is 1, the microcomputer of the cable modem 5 recognizes the MAC address of the data passing through the switching hub 4 and preferentially permits communication with the broadcast signal receiver 200. Even if devices other than the broadcast signal receiver 200 are connected to the switching hub 4, communication of these devices is not permitted. When the number of terminals connected to the Internet of the CATV terminal device 1 is N greater than 1, communication with the broadcast signal receiver 200 is preferentially permitted, and among the devices connected to each terminal of the switching hub 4 , N-1 devices are allowed to communicate.
Even when a switching hub is provided outside the CATV terminal device and the number of connected devices is increased, communication of the broadcast signal receiver 200 is always preferentially permitted, and communication permission of other devices is similarly controlled. Is done.
Further, by using the VLAN function (virtual LAN function) of the bidirectional communication device 201, permission of communication of a device connected to the bidirectional communication device 201 is selected, or the personal computer 3 connected to the CATV terminal device 1 is selected. So that the broadcast signal receiver 200 cannot be accessed.

次に，加入者宅からＣＡＴＶセンター局１００へ伝送される放送信号受信機２００のＭＩＢ情報の通信について説明する。放送信号受信機２００のＭＩＢ情報は放送信号受信機２００内のメモリー１４に収められている。この情報は制御部１３を介して接続線２０２により双方向通信機２０１内のスイッチングハブに伝送され，双方向通信機２０１を介してＣＡＴＶセンター局１００へ伝送される。
なお，ＭＩＢ情報の伝送については，放送信号受信機２００はＣＡＴＶセンター局１００が指定したＩＰアドレスを持つ端末としか通信できないように制御されている
Next, communication of MIB information of the broadcast signal receiver 200 transmitted from the subscriber's home to the CATV center station 100 will be described. The MIB information of the broadcast signal receiver 200 is stored in the memory 14 in the broadcast signal receiver 200. This information is transmitted to the switching hub in the bidirectional communication device 201 via the connection line 202 via the control unit 13 and is transmitted to the CATV center station 100 via the bidirectional communication device 201.
For transmission of MIB information, the broadcast signal receiver 200 is controlled so that it can communicate only with a terminal having an IP address designated by the CATV center station 100.

尚，本発明は上記実施の形態に限定されるものではなく，以下に例示するように，本発明の趣旨を逸脱しない範囲で各部の構成を適宜に変更して実施することも可能である。
例えば前記実施例では，放送信号受信機２００と双方向通信機２０１は１つの筐体１１に収められている例を示したが，別体で構成しても良い。
インターネット接続契約端末数が１の場合はパーソナルコンピュータ３を接続しなくても良い。
また，上記実施例の説明は，本発明に関する部分を特に示したものであり，ＣＡＴＶシステム，ＣＡＴＶ用端末装置１の一般的な機能については省略する。
The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing the configuration of each part without departing from the spirit of the present invention, as exemplified below.
For example, in the above embodiment, the broadcast signal receiver 200 and the two-way communication device 201 are shown as being housed in one housing 11, but may be configured separately.
When the number of Internet connection contract terminals is 1, the personal computer 3 need not be connected.
Further, the description of the above embodiment particularly shows a part related to the present invention, and the general functions of the CATV system and CATV terminal device 1 are omitted.

本発明に係るＣＡＴＶシステムの実施の形態の１例を示す。1 shows an example of an embodiment of a CATV system according to the present invention. 本発明に係るＣＡＴＶ用端末装置の１例を示す。1 shows an example of a CATV terminal device according to the present invention.

符号の説明Explanation of symbols

１…ＣＡＴＶ用端末装置，２…テレビジョン受像機，３…パーソナルコンピュータ，４…スイッチングハブ，５…ケーブルモデム，１０…ＣＡＴＶ網，１１…筐体，１２…受信処理部，１３…制御部，１４…メモリー，１５…ＣＡＴＶ端末装置入出力端子，１６…信号分配手段，１７…信号処理部，１８…ＣＡＴＶ伝送線，１００…センター局，１０１，１０２，１０３，１０４，１０５，１０６…チューナ，１０７…変調器，１０８…ＣＡＴＶ用端末装置の管理装置，１１０…メールサーバー，１１１…放送信号受信機用ダウンロードサーバー，１１２…スイッチングハブ，１１３…ルーター，１１４，１１５，１１６…ＣＭＴＳ，１１７，１１８，１２２，１２３…混合器，１１９…衛星アンテナ，１２０…地上波用アンテナ，１２１…ＷＡＮ接続端子，２００…放送信号受信機，２０１…双方向通信機，２０２…ディジタル信号を伝送する接続線。
DESCRIPTION OF SYMBOLS 1 ... CATV terminal device, 2 ... Television receiver, 3 ... Personal computer, 4 ... Switching hub, 5 ... Cable modem, 10 ... CATV network, 11 ... Case, 12 ... Reception processing part, 13 ... Control part, DESCRIPTION OF SYMBOLS 14 ... Memory, 15 ... CATV terminal input / output terminal, 16 ... Signal distribution means, 17 ... Signal processing part, 18 ... CATV transmission line, 100 ... Center station, 101, 102, 103, 104, 105, 106 ... Tuner, DESCRIPTION OF SYMBOLS 107 ... Modulator, 108 ... CATV terminal device management device, 110 ... Mail server, 111 ... Broadcast signal receiver download server, 112 ... Switching hub, 113 ... Router, 114, 115, 116 ... CMTS, 117, 118 122, 123 ... mixer, 119 ... satellite antenna, 120 ... terrestrial antenna, 121 ... AN connection terminal, 200 ... broadcast signal receiver, 201 ... two-way communication device, connecting lines for transmitting 202 ... digital signal.

Claims (4)

ＣＡＴＶシステムで使用されるＣＡＴＶ用端末装置において，放送信号受信機と，ＣＡＴＶセンター局及びＣＡＴＶセンター局を介してＣＡＴＶ網の内部及び外部と双方向通信をする双方向通信機を備え，
放送信号受信機と双方向通信機は共にＣＡＴＶ伝送線に接続されると共に，これら２つの装置は互いにディジタル信号を伝送する接続線で接続され，
双方向通信機に接続した機器からでも，放送信号受信機からでも，ＣＡＴＶ網の内部及び外部と双方向通信する機能を有し，放送信号受信機による前記双方向通信が双方向通信機に接続した機器による前記双方向通信に対して優先することを特徴とするＣＡＴＶ用端末装置。
A CATV terminal device used in a CATV system includes a broadcast signal receiver, a CATV center station, and a bidirectional communication device that performs bidirectional communication with the inside and outside of the CATV network via the CATV center station.
Both the broadcast signal receiver and the two-way communication device are connected to the CATV transmission line, and these two devices are connected to each other via a connection line for transmitting digital signals.
Whether it is a device connected to a bidirectional communication device or a broadcast signal receiver, it has a function of bidirectional communication with the inside and outside of the CATV network, and the bidirectional communication by the broadcast signal receiver is connected to the bidirectional communication device. A CATV terminal device having priority over the two-way communication by the device.
請求項１に記載のＣＡＴＶ用端末装置において，双方向通信機に接続される機器について通信を許可する端末数を制御する機能を有することを特徴とするＣＡＴＶ用端末装置。   2. The CATV terminal apparatus according to claim 1, wherein the CATV terminal apparatus has a function of controlling the number of terminals permitted to communicate with a device connected to the bidirectional communication device. 請求項２に記載のＣＡＴＶ用端末装置において，双方向通信機に接続される機器の通信の許可を選択する機能を有することを特徴とするＣＡＴＶ用端末装置。   3. The CATV terminal apparatus according to claim 2, wherein the CATV terminal apparatus has a function of selecting permission of communication of a device connected to the bidirectional communication device. 請求項１乃至請求項３の何れかに記載のＣＡＴＶ用端末装置を用いて構成したことを特徴とした双方向ＣＡＴＶシステム。
A bidirectional CATV system comprising the CATV terminal device according to any one of claims 1 to 3.
JP2004041932A 2004-02-18 2004-02-18 CATV terminal device and interactive CATV system Expired - Fee Related JP4423064B2 (en)

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