JP2004120736A5 - - Google Patents
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- JP2004120736A5 JP2004120736A5 JP2003305403A JP2003305403A JP2004120736A5 JP 2004120736 A5 JP2004120736 A5 JP 2004120736A5 JP 2003305403 A JP2003305403 A JP 2003305403A JP 2003305403 A JP2003305403 A JP 2003305403A JP 2004120736 A5 JP2004120736 A5 JP 2004120736A5
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グループに固有の共通秘密情報を保持している１個以上の登録済のメンバー機器と、
グループへの登録の要求を送信し、共通秘密情報を取得して保持する新規のメンバー機器と、
新規のメンバー機器から登録の要求を受け付け、グループに登録されている前記登録済のメンバー機器の台数が、グループに登録可能な最大の台数である制限台数未満の場合、前記新規のメンバー機器を登録し、当該メンバー機器へ前記共通秘密情報を出力するグループ管理機器と
から構成されることを特徴とするグループ形成管理システム。 A group formation management system,
One or more registered member devices holding common secret information unique to the group;
A new member device that sends a registration request to the group and obtains and holds common secret information; and
When a registration request is received from a new member device and the number of registered member devices registered in the group is less than the maximum number that can be registered in the group, the new member device is registered. And a group management device that outputs the common secret information to the member device.
グループへの登録の要求を送信し、グループに固有の共通秘密情報を取得して保持するメンバー機器と、
前記メンバー機器から登録の要求を受け付け、グループに登録されているメンバー機器の台数が、グループに登録可能な最大の台数である制限台数未満の場合、前記メンバー機器を登録し、当該メンバー機器へ前記共通秘密情報を出力するグループ管理機器とから構成され、
初期の状態では、前記グループ管理機器にメンバー機器は登録されていない
ことを特徴とするグループ形成管理システム。 A group formation management system,
A member device that sends a registration request to the group and acquires and holds common secret information unique to the group;
When a registration request is received from the member device and the number of member devices registered in the group is less than the maximum number that can be registered in the group, the member device is registered, and the member device is registered with the member device. It consists of a group management device that outputs common secret information,
In the initial state, no member device is registered in the group management device.
前記メンバー機器からグループに登録する旨の登録要求を受け付ける受付手段と、
登録要求が受け付けられると、前記メンバー機器が正当な機器であれば、グループに登録済みのメンバー機器の登録台数が、グループに登録可能な最大の台数である制限台数より少ないか否かを判断し、少ないと判断する場合、前記メンバー機器を登録する判断手段と、
前記制限台数より少ないと判断する場合に、前記メンバー機器へグループに固有の共通秘密情報を出力する通信手段と
から構成されることを特徴とするグループ管理機器。 A group management device that manages the registration of member devices to a group,
Accepting means for accepting a registration request to register in a group from the member device;
When the registration request is accepted, if the member device is a legitimate device, it is determined whether the registered number of member devices already registered in the group is less than the maximum number that can be registered in the group. A determination means for registering the member device if it is determined that there are few;
A group management device comprising: communication means for outputting common secret information unique to a group to the member device when it is determined that the number is less than the limit number.
前記共通秘密情報を生成する生成手段を備え、
前記通信手段は、生成された前記共通秘密情報を出力する
ことを特徴とする請求項３のグループ管理機器。 The group management device further includes:
Generating means for generating the common secret information;
The group management device according to claim 3, wherein the communication unit outputs the generated common secret information.
前記判断手段は、グループ外の前記管理装置から前記共通秘密情報を取得し、
前記通信手段は、取得した前記共通秘密情報を前記メンバー機器へ出力する
ことを特徴とする請求項３のグループ管理機器。 The common secret information is generated by a management device outside the group,
The determination means acquires the common secret information from the management device outside the group,
The group management device according to claim 3, wherein the communication unit outputs the acquired common secret information to the member device.
前記グループ外の管理装置は、前記登録台数が、前記グループに登録可能な最大の台数である制限台数より少ないか否かを判断し、
前記判断手段は、前記登録台数が前記制限台数より少ないか否かを判断する代わりに、前記管理装置から判断結果を受け取り、
前記通信手段は、前記判断結果が、前記台数より前記制限台数の方が少ないことを示す場合、前記共通秘密情報を出力する
ことを特徴とする請求項３のグループ管理機器。 When the accepting unit accepts the registration request, it notifies the management device outside the group that the registration request has been accepted,
The management device outside the group determines whether the registered number is less than a limit number that is the maximum number that can be registered in the group,
The determination means receives a determination result from the management device instead of determining whether the registered number is less than the limit number,
The group management device according to claim 3, wherein the communication unit outputs the common secret information when the determination result indicates that the limited number is smaller than the number.
前記判断手段は、登録済みのメンバー機器の台数が、前記第1制限台数又は前記第２制限台数より少ないか否かを判断する
ことを特徴とする請求項３のグループ管理機器。 The limit number consists of a first limit number and a second limit number,
The group management device according to claim 3 , wherein the determination unit determines whether the number of registered member devices is smaller than the first limit number or the second limit number.
前記判断手段は、前記要求元のメンバー機器が当該グループ管理機器に接続可能なメンバー機器である場合、登録済みの接続可能なメンバー機器の台数が、前記第1制限台数より少ないか否かを判断し、
前記要求元のメンバー機器が当該グループ管理機器に接続できないメンバー機器である場合、登録済みの接続できないメンバー機器の台数が、前記第２制限台数より少ないか否かを判断する
ことを特徴とする請求項７のグループ管理機器。 The first limited number is the maximum number of member devices that can be connected to the group management device among the limited number, and the second limited number cannot be connected to the group management device among the limited numbers. The maximum number of member devices,
The determination unit determines whether the number of registered connectable member devices is less than the first limit number when the request source member device is a member device connectable to the group management device. And
When the requesting member device is a member device that cannot be connected to the group management device, it is determined whether or not the number of registered member devices that cannot be connected is smaller than the second limited number. Item 7. Group management device.
前記他のグループ管理機器は、前記問合要求を受け付け、前記他のグループ管理機器に登録済みのメンバー機器の登録台数が、当該他のグループ管理機器の制限台数より少ないか否かを判断し、少ないと判断する場合、前記メンバー機器を登録し、前記グループ管理機器へ前記共通秘密情報を出力し、
前記通信手段は、前記他のグループ管理機器から前記共通秘密情報を受信すると、前記メンバー機器へ前記共通秘密情報を出力する
ことを特徴とする請求項３のグループ管理機器。 The communication means further outputs an inquiry request for inquiring whether other member management devices can register the member device,
The other group management device accepts the inquiry request, determines whether the registered number of member devices already registered in the other group management device is less than the limit number of the other group management device, If it is determined that there are few, register the member device, output the common secret information to the group management device,
The group management device according to claim 3, wherein the communication means outputs the common secret information to the member device when the common secret information is received from the other group management device.
ことを特徴とする請求項３のグループ管理機器。 The determination unit has a function to counter unauthorized access from outside, and the limited number and the common secret information are stored in an area where reading and writing cannot be performed from outside. 3 group management devices.
ことを特徴とする請求項１０のグループ管理機器。 The group management device according to claim 10 , wherein the determination unit includes a portable module that is detachable from the group management device.
「０」でないと判断する場合、前記通信手段は、前記メンバー機器へ前記共通秘密情報を出力し、
「０」でないと判断する場合、前記判断手段は、前記残数から「１」を減算する
ことを特徴とする請求項３のグループ管理機器。 The determination unit stores a remaining number obtained by subtracting the registered number from the limited number, and when the receiving unit receives a registration request, determines whether the remaining number is “0”;
When determining that it is not “0”, the communication means outputs the common secret information to the member device,
The group management device according to claim 3, wherein when determining that the number is not “0”, the determination unit subtracts “1” from the remaining number.
前記受付手段は、更に前記メンバー機器から、グループへの登録を解消することを示す脱退要求を受け付け、
前記通信手段は、更に、前記脱退要求が受け付けられると、前記共通秘密情報を削除することを指示する削除通知を前記メンバー機器へ出力し、
前記受付手段は、更に、前記共通秘密情報の削除が完了したことを示す完了通知を前記メンバー機器から受け付け、
前記判断手段は、更に、完了通知が受け付けられると、前記登録台数を減らす
ことを特徴とする請求項３のグループ管理機器。 After the common secret information is output to the member device,
The accepting means further accepts a withdrawal request indicating cancellation of registration to the group from the member device,
When the withdrawal request is received, the communication means further outputs a deletion notification instructing to delete the common secret information to the member device,
The accepting means further accepts a completion notification indicating that the deletion of the common secret information is completed from the member device,
The group management device according to claim 3, wherein the determination unit further reduces the registered number when a completion notification is received.
前記通信手段は、前記有効期限情報を前記メンバー機器へ出力し、
前記判断手段は、前記登録台数が、前記制限台数より少ないと判断する場合に、前記登録台数を増やし、更に、前記有効期限情報により示される期間の経過を監視しており、前記有効期限情報が示す期間が終了すると、前記登録台数を減らす
ことを特徴とする請求項３のグループ管理機器。 When the determination unit determines that the registered number is smaller than the limit number, the member device further issues expiration date information indicating a period during which use of the common secret information is permitted in the member device,
The communication means outputs the expiration date information to the member device,
The determination means increases the registered number when determining that the registered number is smaller than the limit number, and further monitors the passage of a period indicated by the expiration date information. 4. The group management device according to claim 3, wherein the number of registered units is reduced when a period shown is completed.
ことを特徴とする請求項３のグループ管理機器。 The determination means acquires the number of client devices that can be registered in a group from a management device outside the group, pays the price according to the acquired number, and sets the acquired number as the limit number. Item 3. Group management device.
ことを特徴とする請求項３のグループ管理機器。 The determination means further acquires the number of member devices that can be registered from a management device outside the group, pays the price according to the acquired number, and adds the acquired number to the limit number. The group management device according to claim 3, wherein the number is a new limited number.
前記受付手段は、更に前記メンバー機器から、通信の要求を受け付け、
前記判断手段は、更に、前記共通秘密情報と要求元のメンバー機器が保持する共通秘密情報とを用いて認証し、
認証結果が成功の場合、前記通信手段は、更に、前記メンバー機器と通信を行う
ことを特徴とする請求項３のグループ管理機器。 After the common secret information is output to the member device,
The accepting means further accepts a communication request from the member device,
The determination means further authenticates using the common secret information and the common secret information held by the requesting member device,
The group management device according to claim 3, wherein when the authentication result is successful, the communication unit further communicates with the member device.
コンテンツ鍵を用いて暗号化した暗号化コンテンツと前記コンテンツ鍵とを蓄積しているコンテンツ格納手段と、
前記共通秘密情報を基に生成された鍵を用い、前記コンテンツ鍵を暗号化して暗号化コンテンツ鍵を生成する暗号化手段とを備え、
前記通信手段は、更に、前記暗号化コンテンツ及び前記暗号化コンテンツ鍵を前記メンバー機器へ出力する
ことを特徴とする請求項３のグループ管理機器。 The group management device further includes:
Content storage means for storing encrypted content encrypted using a content key and the content key;
Using a key generated based on the common secret information, and encrypting the content key to generate an encrypted content key,
The group management device according to claim 3, wherein the communication unit further outputs the encrypted content and the encrypted content key to the member device.
前記暗号化手段は、前記認証が成功の場合に、前記共通秘密情報を基に生成された前記セッション鍵を用いて前記コンテンツ鍵を暗号化する
ことを特徴とする請求項１８のグループ管理機器。 The determination means further authenticates the member device using the common secret information and the common secret information held by the member device, shares a session key with the member device using the common secret information,
The group management device according to claim 18 , wherein the encryption unit encrypts the content key using the session key generated based on the common secret information when the authentication is successful.
ことを特徴とする請求項３のグループ管理機器。 The communication means stores the common secret information, obtains another common secret information, stores the common secret information by overwriting the other common secret information, and periodically or irregularly. The group management device according to claim 3, wherein the other common secret information acquired in the step is output to the member device.
コンテンツ鍵を用いて暗号化した暗号化コンテンツと前記コンテンツ鍵とを蓄積しているコンテンツ格納手段と、
前記共通秘密情報に基づいて生成される鍵を用いて、前記コンテンツ鍵を暗号化して暗号化コンテンツ鍵を生成する暗号化手段と、
生成した暗号化コンテンツ鍵及び暗号化コンテンツを可搬型の記録媒体に書き込む書込手段とを備える
ことを特徴とする請求項３のグループ管理機器。 The group management device further includes:
Content storage means for storing encrypted content encrypted using a content key and the content key;
An encryption means for generating an encrypted content key by encrypting the content key using a key generated based on the common secret information;
The group management device according to claim 3, further comprising: a writing unit that writes the generated encrypted content key and the encrypted content to a portable recording medium.
前記暗号化手段は、前記登録要求に含まれる識別子と、前記共通秘密情報とから生成される鍵を用いて、前記コンテンツ鍵を暗号化して暗号化コンテンツ鍵を生成する
ことを特徴とする請求項２１のグループ管理機器。 The accepting means accepts the registration request including an identifier for identifying the member device;
The encryption means generates an encrypted content key by encrypting the content key using a key generated from the identifier included in the registration request and the common secret information. 21 group management devices.
ことを特徴とする請求項２１のグループ管理機器。 The group management device according to claim 21 , wherein the encryption unit encrypts the content key using a key generated based on the common secret information and an identifier unique to the recording medium.
複数のグループを識別する識別子に、前記グループのそれぞれに固有の共通秘密情報及び前記グループのそれぞれに登録可能な最大の台数である制限台数を対応付けて保持する保持手段を備え、
前記受付手段が、前記識別子の何れか一つを含む登録要求を受け付けると、前記判断手段は、前記受け付けた識別子が識別するグループに登録済みのメンバー機器の登録台数が、前記識別子に対応する前記制限台数より少ないか否かを判断し、少ないと判断される場合に、当該識別子が識別するグループにメンバー機器を登録し、前記識別子に対応する共通秘密情報を選択し、
前記通信手段は、選択された前記共通秘密情報を出力する
ことを特徴とする請求項３のグループ管理機器。 The group management device further includes:
An identifier for identifying a plurality of groups is provided with holding means that holds the common secret information unique to each of the groups and the limited number that is the maximum number that can be registered in each of the groups,
When the accepting unit accepts a registration request including any one of the identifiers, the determining unit is configured such that the registered number of member devices registered in the group identified by the accepted identifier corresponds to the identifier. Determine whether the number is less than the limit number, if it is determined that the number is less, register the member device in the group identified by the identifier, select the common secret information corresponding to the identifier,
The group management device according to claim 3, wherein the communication unit outputs the selected common secret information.
前記判断手段は、前記登録台数に前記所定数を加えた数が、前記制限台数を超えるか否かを判断し、超えないと判断する場合、前記所定数のメンバー機器への前記共通秘密情報の付与を許可する許可権利を生成し、
前記通信手段は、前記生成した許可権利を付加した前記共通秘密情報を前記新規のメンバー機器へ出力する
ことを特徴とする請求項３のグループ管理機器。 The accepting means further accepts a registration request for registering another predetermined number of member devices from the new member device,
The determination means determines whether or not the number obtained by adding the predetermined number to the registered number exceeds the limit number, and when determining that the number does not exceed, the common secret information to the predetermined number of member devices is determined. Generate permission rights to grant,
The group management device according to claim 3, wherein the communication unit outputs the common secret information to which the generated permission right is added to the new member device.
前記判断手段は、更に、受け付けた前記第１識別子を記憶し、
前記通信手段が前記共通秘密情報を出力した後に、前記受付手段は、更に、メンバー機器に固有の第２識別子を受け付け、
前記判断手段は、更に、受け付けた第２識別子が、記憶している第１識別子と一致するか否かを判断し、
前記通信手段は、前記判断手段が一致すると判断する場合に、前記共通秘密情報を前記メンバー機器へ再度出力する
ことを特徴とする請求項３のグループ管理機器。 The accepting means accepts the registration request including a first identifier unique to the member device;
The determination means further stores the received first identifier,
After the communication means outputs the common secret information, the accepting means further accepts a second identifier unique to the member device,
The determination means further determines whether or not the received second identifier matches the stored first identifier;
The group management device according to claim 3, wherein the communication unit outputs the common secret information to the member device again when it is determined that the determination unit matches.
他のグループ管理機器が前記新グループ管理機器になると決定された場合、当該グループ管理機器は、更に、
前記他のグループ管理機器から、新グループに固有の新共通秘密情報を取得する取得手段と、
取得した前記新共通秘密情報を保持する保持手段とを備える
ことを特徴とする請求項３のグループ管理機器。 When it is determined that the group management device becomes a new group management device that manages a new group that is newly formed by combining groups managed by a plurality of group management devices, the communication means is a new common device unique to the new group. Secret information is output to each member device,
When it is determined that another group management device becomes the new group management device, the group management device further includes:
An acquisition means for acquiring new common secret information unique to the new group from the other group management device;
The group management device according to claim 3, further comprising holding means for holding the acquired new common secret information.
ことを特徴とする請求項２７のグループ管理機器。 28. The communication unit according to claim 27 , further comprising: determining which group management device becomes the new group management device with another group management device that manages another group. Group management equipment.
前記通信手段は、前記優先順位及び前記他のグループ管理機器に付された優先順位のうち、高い優先順位を付されたグループ管理機器を、前記新グループ管理機器になると決定する
ことを特徴とする請求項２８のグループ管理機器。 The holding means further stores the priority assigned to the group management device,
The communication means determines that a group management device having a higher priority among the priorities and the priorities assigned to the other group management devices becomes the new group management device. The group management device according to claim 28 .
前記新グループ管理機器に決定された後、前記受付手段は、更に、各メンバー機器の優先順位を取得し、
前記グループ管理機器は、更に、
前記受付手段が取得した優先順位の高い機器から順に、前記制限台数以内で新グループに登録する新メンバー機器を選択する選択手段を備え、
前記通信手段は、選択した新メンバー機器へ前記新共通秘密情報を出力する
ことを特徴とする請求項２７のグループ管理機器。 Member devices of the group managed by the group management device and other group management devices are given priorities, respectively.
After being determined as the new group management device, the receiving means further obtains the priority order of each member device,
The group management device further includes:
In order from the device with the highest priority obtained by the receiving means, comprising a selecting means for selecting a new member device to be registered in a new group within the limited number
28. The group management device according to claim 27 , wherein the communication means outputs the new common secret information to the selected new member device.
前記通信手段が前記共通秘密情報を出力した後、
当該グループ管理機器に登録されているメンバー機器から、別のグループを管理するグループ管理機器になるメンバー機器を選択する選択手段と、
当該グループに登録されている前記メンバー機器を、当該グループ管理機器が管理するグループのメンバー機器と、前記別のグループ管理機器が管理する別のグループのメンバー機器とに分ける分配手段とを備え、
前記通信手段は、当該グループ管理機器が管理するグループに分けられたメンバー機器に、前記共通秘密情報とは別の共通秘密情報を出力する
ことを特徴とする請求項３のグループ管理機器。 The group management device further includes:
After the communication means outputs the common secret information,
A selection means for selecting a member device to be a group management device for managing another group from the member devices registered in the group management device;
Distributing means for dividing the member device registered in the group into a member device of a group managed by the group management device and a member device of another group managed by the other group management device,
The group management device according to claim 3, wherein the communication unit outputs common secret information different from the common secret information to member devices divided into groups managed by the group management device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003305403A JP4610872B2 (en) | 2002-09-05 | 2003-08-28 | Group formation management system, group management equipment and member equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002260520 | 2002-09-05 | ||
| JP2003305403A JP4610872B2 (en) | 2002-09-05 | 2003-08-28 | Group formation management system, group management equipment and member equipment |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2004120736A JP2004120736A (en) | 2004-04-15 |
| JP2004120736A5 true JP2004120736A5 (en) | 2006-09-07 |
| JP4610872B2 JP4610872B2 (en) | 2011-01-12 |
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| JP2003305403A Expired - Fee Related JP4610872B2 (en) | 2002-09-05 | 2003-08-28 | Group formation management system, group management equipment and member equipment |
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| JP4692826B2 (en) | 2003-07-28 | 2011-06-01 | ソニー株式会社 | Information processing apparatus and method, recording medium, and program |
| JP4576853B2 (en) * | 2004-03-05 | 2010-11-10 | ソニー株式会社 | Information processing apparatus, authentication processing method, and computer program |
| JP4752198B2 (en) * | 2004-05-10 | 2011-08-17 | ソニー株式会社 | Drive device, reproduction processing device, information processing device, information recording medium, information processing method, and computer program |
| JP4556492B2 (en) * | 2004-05-27 | 2010-10-06 | ソニー株式会社 | COMMUNICATION DEVICE AND ITS PROGRAM, DATA PROCESSING DEVICE AND ITS PROGRAM, AND METHOD THEREOF |
| US7984489B2 (en) | 2004-07-15 | 2011-07-19 | Panasonic Corporation | Device registration system and device registration apparatus |
| US8312267B2 (en) | 2004-07-20 | 2012-11-13 | Time Warner Cable Inc. | Technique for securely communicating programming content |
| US8266429B2 (en) * | 2004-07-20 | 2012-09-11 | Time Warner Cable, Inc. | Technique for securely communicating and storing programming material in a trusted domain |
| JP4580195B2 (en) * | 2004-08-12 | 2010-11-10 | 株式会社日立製作所 | Management method of computer system including fiber channel switch, management program, and computer system thereof |
| TR201802152T4 (en) * | 2004-10-08 | 2018-03-21 | Koninklijke Philips Nv | User-based content key encryption for a digital rights management system (DRM). |
| KR100677152B1 (en) * | 2004-11-17 | 2007-02-02 | 삼성전자주식회사 | Method for transmitting content in home network using user-binding |
| WO2006107185A1 (en) * | 2005-04-08 | 2006-10-12 | Electronics And Telecommunications Research Intitute | Domain management method and domain context of users and devices based domain system |
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| US8234714B2 (en) | 2007-07-18 | 2012-07-31 | Victor Company Of Japan, Ltd. | Method and system for registering domain |
| US9602864B2 (en) | 2009-06-08 | 2017-03-21 | Time Warner Cable Enterprises Llc | Media bridge apparatus and methods |
| US9866609B2 (en) | 2009-06-08 | 2018-01-09 | Time Warner Cable Enterprises Llc | Methods and apparatus for premises content distribution |
| WO2011070629A1 (en) * | 2009-12-11 | 2011-06-16 | 三菱電機株式会社 | In-vehicle information apparatus, storage device, and system for in-vehicle information device |
| US9906838B2 (en) | 2010-07-12 | 2018-02-27 | Time Warner Cable Enterprises Llc | Apparatus and methods for content delivery and message exchange across multiple content delivery networks |
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| US20140282786A1 (en) | 2013-03-12 | 2014-09-18 | Time Warner Cable Enterprises Llc | Methods and apparatus for providing and uploading content to personalized network storage |
| JP5971160B2 (en) * | 2013-03-15 | 2016-08-17 | ブラザー工業株式会社 | Server and network system |
| US9066153B2 (en) | 2013-03-15 | 2015-06-23 | Time Warner Cable Enterprises Llc | Apparatus and methods for multicast delivery of content in a content delivery network |
| US10368255B2 (en) | 2017-07-25 | 2019-07-30 | Time Warner Cable Enterprises Llc | Methods and apparatus for client-based dynamic control of connections to co-existing radio access networks |
| US9313568B2 (en) | 2013-07-23 | 2016-04-12 | Chicago Custom Acoustics, Inc. | Custom earphone with dome in the canal |
| US9621940B2 (en) | 2014-05-29 | 2017-04-11 | Time Warner Cable Enterprises Llc | Apparatus and methods for recording, accessing, and delivering packetized content |
| US11540148B2 (en) | 2014-06-11 | 2022-12-27 | Time Warner Cable Enterprises Llc | Methods and apparatus for access point location |
| US9935833B2 (en) | 2014-11-05 | 2018-04-03 | Time Warner Cable Enterprises Llc | Methods and apparatus for determining an optimized wireless interface installation configuration |
| US9986578B2 (en) | 2015-12-04 | 2018-05-29 | Time Warner Cable Enterprises Llc | Apparatus and methods for selective data network access |
| US9918345B2 (en) | 2016-01-20 | 2018-03-13 | Time Warner Cable Enterprises Llc | Apparatus and method for wireless network services in moving vehicles |
| US10492034B2 (en) | 2016-03-07 | 2019-11-26 | Time Warner Cable Enterprises Llc | Apparatus and methods for dynamic open-access networks |
| US10164858B2 (en) | 2016-06-15 | 2018-12-25 | Time Warner Cable Enterprises Llc | Apparatus and methods for monitoring and diagnosing a wireless network |
| US10645547B2 (en) | 2017-06-02 | 2020-05-05 | Charter Communications Operating, Llc | Apparatus and methods for providing wireless service in a venue |
| US10638361B2 (en) | 2017-06-06 | 2020-04-28 | Charter Communications Operating, Llc | Methods and apparatus for dynamic control of connections to co-existing radio access networks |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0766803A (en) * | 1993-08-23 | 1995-03-10 | Hitachi Ltd | Multiple address ciphering communication method and its system |
| JP2000227887A (en) * | 1999-02-05 | 2000-08-15 | Kokuyo Co Ltd | Data distribution equipment |
| JP2001209586A (en) * | 2000-01-26 | 2001-08-03 | Toshiba Corp | Unit and method of controlling contents for computer |
| JP4114311B2 (en) * | 2000-09-07 | 2008-07-09 | 富士ゼロックス株式会社 | User management system and user management method |
| JP4614664B2 (en) * | 2003-01-10 | 2011-01-19 | パナソニック株式会社 | Group subscription authorization system, server equipment and client equipment |
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2003
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