JPH05284499A - System for reproducing pay television/audio program broadcasting - Google Patents

System for reproducing pay television/audio program broadcasting

Info

Publication number
JPH05284499A
JPH05284499A JP8012392A JP8012392A JPH05284499A JP H05284499 A JPH05284499 A JP H05284499A JP 8012392 A JP8012392 A JP 8012392A JP 8012392 A JP8012392 A JP 8012392A JP H05284499 A JPH05284499 A JP H05284499A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
broadcasting
device
side
programs
user
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.)
Granted
Application number
JP8012392A
Other languages
Japanese (ja)
Inventor
Akio Iijima
明夫 飯島
Original Assignee
Nec Corp
日本電気株式会社
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

Links

Abstract

PURPOSE:To individually perform desired charging for programs performing different valorizations. CONSTITUTION:A broadcasting presenter side device 1 ciphers and broadcasts respective broadcasting programs with ciphered keys different for the respective broadcasting programs. A user side device 3 receiving the programs through a communication satellite 2 inquires the deciphered key information of the designated broadcasting program to the broadcasting presenter side device 1 and in this case, the registered identification code or password of the user side device 3 itself is transmitted. The broadcasting presenter side device 1 investigates this identification number or the password, transmits the deciphered key information to the user side device 3 and further performs charging.

Description

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

【0001】 [0001]

【産業上の利用分野】本発明は暗号化された有料テレビジョン・オーディオ放送に利用し、放送及び録画、再生を行う際に個々の放送プログラムごとに個別課金を行う有料テレビジョン・オーディオプログラム放送再生方式に関する。 BACKGROUND OF THE INVENTION The present invention utilizes a paid television audio broadcast that has been encrypted, broadcasting and recording, pay television audio program broadcast to perform a separate billing for each individual of the broadcast program at the time of performing the play relating to the reproduction system.

【0002】 [0002]

【従来の技術】従来の有料テレビジョン・オーディオ放送、例えば、衛星放送の有料放送のようにユーザが、その局の全放送プログラムに対して一括契約を行い、この契約期間単位で復号化鍵を得るようにしている。 A conventional pay television audio broadcasting, for example, a user such as pay-TV satellite broadcasting, performs a collective agreement for all broadcast programs of the stations, the decryption key in this contract period unit It is get way.

【0003】 [0003]

【発明が解決しようとする課題】このように従来の有料テレビジョン・オーディオ放送では、一括課金のため、 [Problems that the Invention is to Solve In this way, in the conventional pay television audio broadcasting, for bulk billing,
最新の映画や専用情報等のように異なる価格設定を行いたい放送プログラムに対して個別に所望の課金ができないという問題がある。 There is a problem that can not be desired billing separately for broadcasting the program you want to do different pricing as such as latest movies and exclusive information.

【0004】本発明は、このような課題を解決するものであり、異なる価格設定を行う放送プログラムに対して、個別に所望の課金ができる有料テレビジョン・オーディオプログラム放送再生方式を提供することを目的とする。 [0004] The present invention is intended to solve such problems, to the broadcast program to perform different pricing, to provide pay television audio program broadcast reproduction system that can desired billing separately for the purpose.

【0005】 [0005]

【課題を解決するための手段】この目的を達成するために、本発明の有料テレビジョン・オーディオプログラム放送再生方式は、暗号化された有料テレビジョン・オーディオプログラム放送を行うための暗号化装置を有する放送提供者側装置と、有料テレビジョン・オーディオプログラム放送を受信し、録画再生をする暗号復号化装置とを備え、放送提供者側装置の暗号化装置は、放送プログラムごとに異なる暗号化鍵で、それぞれの放送プログラムを暗号化して放送する暗号化放送手段と、暗号復号化装置からの識別番号、パスワードを調べて、暗号復号化装置に対する復号化鍵情報を送出する復号化鍵情報送出手段と、復号化鍵情報送出手段から復号化鍵情報を送出した暗号復号化装置に対する課金を行なう課金手段とを備え、暗号復号 Means for Solving the Problems To this end, pay television audio program broadcast playback method of the present invention, an encryption device for performing pay television audio program broadcast encrypted a broadcast provider side apparatus having receives broadcast pay television audio program, a decryption apparatus for recording reproduction, the encryption device of the broadcasting provider side apparatus, encryption key different for each broadcast program in an encryption broadcast means for broadcasting to encrypt each broadcast program, the identification number from the cryptogram decoder examines the password, decryption key information sending means for sending the decryption key information for the cryptogram decoder When, and a charging means for charging for the cryptogram decoder that sent the decryption key information from the decryption key information sending means, deciphering 装置は、放送提供者側装置に対して、通信網を通じた通信により、指定した放送プログラムの復号化鍵情報を問い合わせる問い合わせ手段と、問い合わせの際に自己暗号復号化装置における放送提供者側装置に登録された識別復号あるいはパスワードを送出する送出手段とを備えて構成される。 Device to the broadcast provider side apparatus, by communication through the communication network, an inquiry means for inquiring decryption key information of the broadcast program specified in the broadcast provider side apparatus in a self cryptogram decoder in the query constructed and a sending means for sending a registration identification decoded or password.

【0006】また、暗号化された有料テレビジョン・オーディオプログラム放送を行う放送提供者側装置を地上局で構成し、有料テレビジョン・オーディオプログラム放送を受信し、録画再生をする暗号復号化装置をユーザ側装置で構成している。 [0006] In addition, the broadcast provider side apparatus for performing a pay television audio program broadcast encrypted constituted by the ground station, receives a broadcast pay television audio program, the encryption decoding apparatus for the recording and playback It is constituted by the user device.

【0007】さらに、これらの構成に加え、地上局の放送提供者側装置に暗号化された有料テレビジョン・オーディオプログラム放送を電波で送信する送信手段と、電波を受信して、返送するトランスポンダを備える通信衛星と、暗号復号化装置に通信衛星からの有料テレビジョン・オーディオプログラム放送の電波を受信する受信手段とを備えて構成される。 Furthermore, in addition to these configurations, and transmission means for transmitting the pay television audio program broadcast encrypted with the broadcast provider side apparatus ground station radio waves, receives a radio wave, the transponder sends back a communication satellite comprises, comprised and a receiving means for receiving a radio wave of pay television audio program broadcast from the communications satellite to the cryptogram decoder.

【実施例】以下、本発明の有料テレビジョン・オーディオプログラム放送再生方式の実施例を図面に基づいて説明する。 BRIEF DESCRIPTION on the basis of an embodiment of a pay television audio program broadcast reproduction system of the present invention with reference to the accompanying drawings.

【0008】図1は実施例の構成を示している。 [0008] Figure 1 shows a construction of the embodiment.

【0009】図1において、1は放送提供者側装置、2 [0009] In FIG. 1, 1 is the broadcast provider side apparatus 2
は通信衛星、3はユーザ側装置を示している。 Communication satellites, 3 shows a user device.

【0010】放送提供者側装置1にあって、16はテレビジョンプログラム放送局、17は管理局であるテレビジョンプログラム放送局16において、4はテレビジョンプログラム送信部であり、テレビジョンプログラムのビデオ信号を送出する。 [0010] In the broadcast provider side apparatus 1, 16 is a television program broadcasting station, 17 in the television program broadcasting station 16 is a management station, 4 shows a television program transmission unit, a television program video It sends a signal. 5は以降に説明する暗号化・符号化鍵管理部7から暗号化鍵を受けてビデオ信号をテレビジョンプログラムごとに暗号化する暗号化部、6は、 5 encryption unit for encrypting a video signal for each television program by receiving an encryption key from the encryption-code key management unit 7 to be described later, 6,
その暗号化されたビデオ信号を通信衛星2へ送信する送信部である。 A transmission unit for transmitting the encrypted video signal to the communication satellite 2.

【0011】ユーザ側装置3にあって、10は通信衛星2からの暗号化されたビデオ信号を受信する受信部、1 [0011] In the user device 3, 10 receiving unit for receiving the encrypted video signal from the communication satellite 2, 1
1は以降に説明する録画再生制御部15からの制御により暗号化されたビデオ信号を録画及び再生する録画部、 1 is recording unit for recording and reproducing a video signal encrypted by the control of the recording and reproducing controller 15 to be described later,
12は録画生成制御部15から復号化鍵の入力を受けて録画部11から再生された暗号化ビデオ信号を復号化する復号化部、13は復号化されたビデオ信号を表示するディスプレイ部、14は録画再生制御部15からの指示により管理局17と通信し、指示されたテレビジョンプログラムの復号化鍵を受信する通信部、15はユーザからの指示によりテレビジョンプログラムを録画し、復号化鍵の取得するとともに録画されたテレビジョンプログラムの再生、復号化を制御する録画再生制御部である。 12 decoding unit to decode the encrypted video signal reproduced from the recording unit 11 receives the input of the decryption key from the recording generation control unit 15, 13 is a display unit for displaying a video signal decoded, 14 communicating with the management station 17 in accordance with an instruction from the recording and reproducing controller 15, a communication unit for receiving the decryption key of the television program is instructed, 15 to record a television program in accordance with an instruction from the user, the decryption key reproduction of recorded television programs as well as the acquisition, a recording and reproducing controller for controlling the decryption.

【0012】管理局17にあって、7は暗号化・復号化鍵管理部、8はユーザ側装置3と通信し、ユーザ側装置3の識別暗号及びパスワードをチェックする通信部、9 [0012] In the control station 17, 7 encryption and decryption key management unit 8 communicates with the user device 3, a communication unit for checking the identification encryption and password of the user device 3, 9
は復号化鍵を与えたユーザに対して、そのテレビジョンプログラムの料金を課金する課金処理部である。 For a user to give a decryption key, a charging section for charging a fee for that television program. 次に、 next,
この構成の有料テレビジョン・オーディオプログラム放送再生方式の動作について説明する。 The operation of the pay television audio program broadcast reproduction system of this structure will be described.

【0013】図1において、放送提供者側装置1は、個々のテレビジョンプログラムを、そのテレビジョンプログラムごとに管理された暗号化鍵により暗号化し、通信衛星2を通じてユーザ側装置3へ放送する。 [0013] In FIG 1, the broadcasting provider side apparatus 1, the individual television program, the television and encrypted by the encryption key which is managed for each John program, broadcast to the user device 3 via the communication satellite 2.

【0014】ユーザ側装置3では、ユーザの指示により、録画再生制御部15が指定されたテレビジョンプログラムの暗号化されたビデオ信号を録画部11で録画し、又、通信部14が管理局17の通信部8と通信を行い、ユーザの識別番号やパスワードを送受信する。 [0014] In the user device 3, the instruction of the user, and recording the encrypted video signal of a television program recording and reproducing controller 15 is designated by the recording unit 11, also, the communication unit 14 the management station 17 It performs communication with the communication unit 8 transmits and receives user identification number and password. この送受信で正統性が確認されれば指定のテレビジョンプログラムにおけるユーザ側装置3に対応した復号鍵を得る。 Obtaining a decryption key corresponding to the user device 3 in the legitimacy confirmed it be designated television programs in this transceiver.

【0015】又、これに対して、管理局17で課金処理を行なう。 [0015] In addition, contrast, performs accounting processing in the Administration 17. その際、管理局17が、そのユーザ側装置3 At that time, the management station 17, the user device 3
以外には使用できない様に他のユーザ側装置に対して復号化鍵を通知する機能が必要な場合には、各ユーザ側装置に固有の公開鍵方式鍵情報及び、その復号化機能を持たせる。 Other When function of notifying the decryption key to the user device is required so as not be used in addition to, the public key system key information and unique to each user device, to have its decryption function . この公開鍵暗号化方式でビデオ信号の復号鍵情報を通知し、その復号化も復号化部12の内部のLSI The public key cryptosystem notified decryption key information of the video signal, internal LSI decoding unit 12 also the decrypted
チップの内部等で行ない、ユーザが実際の復号化鍵を知ることができないようにする。 It performed within such a chip, so that the user can not know the actual decryption key.

【0016】ユーザ側装置3では、このようにして得たビデオ信号の復号化鍵により録画部11から再生された暗号化のビデオ信号を復号化し、ディスプレイ部13に表示する。 [0016] In the user device 3, such a decryption key obtained video signal in the decoded video signal of the encrypted reproduced from the recording unit 11, and displays on the display unit 13.

【0017】このようにして、個々のテレビジョンプログラムごとに異なる暗号化鍵で暗号化されたテレビジョンプログラムに対し、その復号化鍵を通信回線を通じて管理局17に問合せて有料で入手することにより、同報形の衛星通信放送を利用した個々のプログラム個別課金方式のテレビジョンプログラムの提供ができることになる。 [0017] In this way, with respect to the encrypted television program with different encryption key for each individual television program, by obtaining a fee to contact the control station 17 the decryption key via the communication line , it will be able to provide a television program of the individual program individual billing system using satellite communications and broadcasting of the broadcast type.

【0018】 [0018]

【発明の効果】以上のように、本発明の有料テレビジョン・オーディオプログラム放送再生方式は、放送プログラムごとに異なる暗号化鍵で暗号化して放送し、放送プログラムの提供を所望する暗号復号化装置では、放送提供者側装置に、その復号化鍵を有料で問合せて復号化鍵を入手し、復号化して再生するようにしているため、異なる価格設定を行うプログラムに対して個別に所望の課金ができるという効果を有する。 As described above, according to the present invention, pay television audio program broadcast playback method of the present invention is to broadcast encrypted with different encryption key for each broadcast program, the cryptogram decoder that desired to provide a broadcast program in, the broadcast provider side apparatus, to obtain the decryption key query the decryption key for a fee, since by decoding so that play, desired charge separately for programs performing different pricing It has the effect that it is.

【0019】加えて、放送提供者も、これにより新作の映画やレコード等の著作権の保護が特別に必要なプログラムや専門的な特別プログラムをユーザ個別の特別課金を前提に提供可能になる利点がある。 [0019] In addition, also broadcast providers, This advantage to be able to provide new movies and copyright protection of record, such as a special need programs and professional special program user-specific special billing on the assumption there is.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の有料テレビジョン・オーディオプログラム放送再生方式の実施例における構成を示すブロック図である。 1 is a block diagram illustrating the construction of an embodiment of the pay television audio program broadcast playback method of the present invention.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 放送提供者側装置 2 通信衛星 3 ユーザ側装置 4 テレビジョンプログラム送信部 5 暗号化部 6 送信部 7 暗号化・符号化鍵管理部 8 通信部 9 課金処理部 10 受信部 11 録画部 12 復号化部 13 ディスプレイ部 14 通信部 15 録画再生制御部 16 テレビジョンプログラム放送局 17 管理局 1 broadcast provider side device 2 communication satellite 3 user device 4 television program transmitting unit 5 encryption unit 6 transmitter 7 encryption and code key management unit 8 communicating portion 9 accounting unit 10 receiving unit 11 recording unit 12 decodes section 13 display section 14 communication section 15 recording and reproducing controller 16 television program broadcasting station 17 Administration

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】暗号化された有料テレビジョン・オーディオプログラム放送を行うための暗号化装置を有する放送提供者側装置と、前記有料テレビジョン・オーディオプログラム放送を受信し、録画再生をする暗号復号化装置とを備え、 前記放送提供者側装置の暗号化装置は、 放送プログラムごとに異なる暗号化鍵で、それぞれの放送プログラムを暗号化して放送する暗号化放送手段と、 前記暗号復号化装置からの識別番号、パスワードを調べて、前記暗号復号化装置に対する復号化鍵情報を送出する復号化鍵情報送出手段と、 前記復号化鍵情報送出手段から復号化鍵情報を送出した前記暗号復号化装置に対する課金を行なう課金手段とを備え、 暗号復号化装置は、 前記放送提供者側装置に対して、通信網を通じた通信により、指定した放 And 1. A encrypted pay television audio program broadcasting provider side apparatus having the encryption device for performing broadcast, receives broadcast the pay television audio program, the decryption of the recording and playback and an apparatus, the encryption apparatus of the broadcasting provider side apparatus in a different encryption key for each broadcast program, each broadcast program and the encrypted broadcasting means for broadcasting encrypted, from the cryptogram decoder identification number, check the password, the decryption and decryption key information sending means for sending the decryption key information for the device, said decryption key information the cryptogram decoder that sent the decryption key information from the delivery means and a charging means for charging for encryption decoding apparatus to the broadcast provider side apparatus, by communication through the communication network, release the specified プログラムの復号化鍵情報を問い合わせる問い合わせ手段と、 前記問い合わせの際に自己暗号復号化装置における前記放送提供者側装置に登録された識別復号あるいはパスワードを送出する送出手段と、 を備えることを特徴とする有料テレビジョン・オーディオプログラム放送再生方式。 An inquiry means for inquiring decryption key information program, and characterized in that and a sending means for sending the broadcast registered in the provider side apparatus identification decoded or password in a self cryptogram decoder in the query pay television audio program broadcast reproduction system to.
  2. 【請求項2】暗号化された有料テレビジョン・オーディオプログラム放送を行う放送提供者側装置を地上局で構成し、前記有料テレビジョン・オーディオプログラム放送を受信し、録画再生をする暗号復号化装置をユーザ側装置で構成したことを特徴とする請求項1記載の有料テレビジョン・オーディオプログラム放送再生方式。 2. A broadcast provider side apparatus for performing encrypted pay television audio program broadcasting constituted by the ground station receives broadcast the pay television audio program, the cryptogram decoder for the recording and playback pay television audio program broadcast playback method according to claim 1, characterized by being configured at the user device.
  3. 【請求項3】前記請求項1又は2記載の構成に加え、地上局の放送提供者側装置に暗号化された有料テレビジョン・オーディオプログラム放送を電波で送信する送信手段と、前記電波を受信して、返送するトランスポンダを備える通信衛星と、暗号復号化装置に前記通信衛星からの有料テレビジョン・オーディオプログラム放送の電波を受信する受信手段とを備える有料テレビジョン・オーディオプログラム放送再生方式。 3. In addition to the configuration of claim 1 or 2, wherein a transmission unit for transmitting the pay television audio program broadcast encrypted with the broadcast provider side apparatus ground station radio waves, receiving the waves to a communications satellite with a transponder to return, pay television audio program broadcast reproduction system comprising receiving means for receiving a radio wave of pay television audio program broadcast from said communication satellites to the cryptogram decoder.
JP8012392A 1992-04-02 1992-04-02 System for reproducing pay television/audio program broadcasting Granted JPH05284499A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8012392A JPH05284499A (en) 1992-04-02 1992-04-02 System for reproducing pay television/audio program broadcasting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8012392A JPH05284499A (en) 1992-04-02 1992-04-02 System for reproducing pay television/audio program broadcasting

Publications (1)

Publication Number Publication Date
JPH05284499A true true JPH05284499A (en) 1993-10-29

Family

ID=13709437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8012392A Granted JPH05284499A (en) 1992-04-02 1992-04-02 System for reproducing pay television/audio program broadcasting

Country Status (1)

Country Link
JP (1) JPH05284499A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504933A (en) * 1992-10-27 1996-04-02 Mitsubishi Corporation Pay broadcasting system
US5945725A (en) * 1996-12-04 1999-08-31 Ball Semiconductor, Inc. Spherical shaped integrated circuit utilizing an inductor
JP2001144744A (en) * 1999-11-12 2001-05-25 Deijitei Minimi:Kk Data distribution system and data reproducing terminal device
US6498643B1 (en) 2000-11-13 2002-12-24 Ball Semiconductor, Inc. Spherical surface inspection system
JP2005252444A (en) * 2004-03-02 2005-09-15 Oki Electric Ind Co Ltd Encryption method, decryption method and control program of file
WO2006028094A1 (en) * 2004-09-07 2006-03-16 Matsushita Electric Industrial Co., Ltd. Communication apparatus
JP2006180560A (en) * 2006-03-20 2006-07-06 Nippon Hoso Kyokai <Nhk> Content-transmitting method and receiving method, content-transmitting apparatus and receiving apparatus, and content-transmitting program and receiving program
JP2006320018A (en) * 2001-03-29 2006-11-24 Sony Corp Information processing apparatus, information processing method, recording medium, and program
JP2007189631A (en) * 2006-01-16 2007-07-26 Sony Corp Electronics, and content distribution system
JP2007189712A (en) * 1996-09-20 2007-07-26 I-O Data Device Inc Network system
JP2008053768A (en) * 2006-08-22 2008-03-06 Kddi Corp Content distributing method, content distributing server, broadcasting station server, and terminal
JP2009296667A (en) * 2009-09-24 2009-12-17 Nippon Hoso Kyokai <Nhk> Content receiving apparatus, content receiving program and restrictive receiving system
JP2013078154A (en) * 2003-03-11 2013-04-25 Sony Electronics Inc Method and apparatus for protecting transfer of data
JP2013138435A (en) * 1995-06-30 2013-07-11 Sony Corp Reproducing method, reproducing apparatus, and record medium
US8996421B2 (en) 2006-05-15 2015-03-31 The Directv Group, Inc. Methods and apparatus to conditionally authorize content delivery at broadcast headends in pay delivery systems
US9178693B2 (en) 2006-08-04 2015-11-03 The Directv Group, Inc. Distributed media-protection systems and methods to operate the same
US9225761B2 (en) 2006-08-04 2015-12-29 The Directv Group, Inc. Distributed media-aggregation systems and methods to operate the same
US9325944B2 (en) 2005-08-11 2016-04-26 The Directv Group, Inc. Secure delivery of program content via a removable storage medium
US9967521B2 (en) 2006-05-15 2018-05-08 The Directv Group, Inc. Methods and apparatus to provide content on demand in content broadcast systems

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504933A (en) * 1992-10-27 1996-04-02 Mitsubishi Corporation Pay broadcasting system
JP2013138435A (en) * 1995-06-30 2013-07-11 Sony Corp Reproducing method, reproducing apparatus, and record medium
JP2007189712A (en) * 1996-09-20 2007-07-26 I-O Data Device Inc Network system
JP4667405B2 (en) * 1996-09-20 2011-04-13 株式会社アイ・オー・データ機器 Network system
US5955776A (en) * 1996-12-04 1999-09-21 Ball Semiconductor, Inc. Spherical shaped semiconductor integrated circuit
US5945725A (en) * 1996-12-04 1999-08-31 Ball Semiconductor, Inc. Spherical shaped integrated circuit utilizing an inductor
JP2001144744A (en) * 1999-11-12 2001-05-25 Deijitei Minimi:Kk Data distribution system and data reproducing terminal device
US6498643B1 (en) 2000-11-13 2002-12-24 Ball Semiconductor, Inc. Spherical surface inspection system
JP2006320018A (en) * 2001-03-29 2006-11-24 Sony Corp Information processing apparatus, information processing method, recording medium, and program
JP2013078154A (en) * 2003-03-11 2013-04-25 Sony Electronics Inc Method and apparatus for protecting transfer of data
JP2005252444A (en) * 2004-03-02 2005-09-15 Oki Electric Ind Co Ltd Encryption method, decryption method and control program of file
US8341701B2 (en) 2004-09-07 2012-12-25 Panasonic Corporation Communication apparatus
WO2006028094A1 (en) * 2004-09-07 2006-03-16 Matsushita Electric Industrial Co., Ltd. Communication apparatus
US9325944B2 (en) 2005-08-11 2016-04-26 The Directv Group, Inc. Secure delivery of program content via a removable storage medium
JP4529909B2 (en) * 2006-01-16 2010-08-25 ソニー株式会社 Electronic devices, and, the content delivery system
JP2007189631A (en) * 2006-01-16 2007-07-26 Sony Corp Electronics, and content distribution system
JP2006180560A (en) * 2006-03-20 2006-07-06 Nippon Hoso Kyokai <Nhk> Content-transmitting method and receiving method, content-transmitting apparatus and receiving apparatus, and content-transmitting program and receiving program
US8996421B2 (en) 2006-05-15 2015-03-31 The Directv Group, Inc. Methods and apparatus to conditionally authorize content delivery at broadcast headends in pay delivery systems
US9967521B2 (en) 2006-05-15 2018-05-08 The Directv Group, Inc. Methods and apparatus to provide content on demand in content broadcast systems
US9178693B2 (en) 2006-08-04 2015-11-03 The Directv Group, Inc. Distributed media-protection systems and methods to operate the same
US9225761B2 (en) 2006-08-04 2015-12-29 The Directv Group, Inc. Distributed media-aggregation systems and methods to operate the same
JP4587399B2 (en) * 2006-08-22 2010-11-24 Kddi株式会社 Content distribution method and system
JP2008053768A (en) * 2006-08-22 2008-03-06 Kddi Corp Content distributing method, content distributing server, broadcasting station server, and terminal
JP2009296667A (en) * 2009-09-24 2009-12-17 Nippon Hoso Kyokai <Nhk> Content receiving apparatus, content receiving program and restrictive receiving system

Similar Documents

Publication Publication Date Title
US7925203B2 (en) System and method for controlling broadcast multimedia using plural wireless network connections
US5627892A (en) Data security scheme for point-to-point communication sessions
US5671276A (en) Method and apparatus for impulse purchasing of packaged information services
US20060179489A1 (en) Conditional access system for digital data by key decryption and re-encryption
US6005938A (en) Preventing replay attacks on digital information distributed by network service providers
US20050100162A1 (en) System and method for using DRM to control conditional access to DVB content
US6985591B2 (en) Method and apparatus for distributing keys for decrypting and re-encrypting publicly distributed media
US20020048367A1 (en) Method and apparatus for recording of encrypted digital data
US20060059342A1 (en) System and method for providing authorized access to digital content
US20080089516A1 (en) Method and apparatus for providing secure internet protocol media services
US20070258596A1 (en) Distribution of broadcast content for remote decryption and viewing
US20050100161A1 (en) Access to encrypted broadcast content
US7266198B2 (en) System and method for providing authorized access to digital content
US20050249350A1 (en) Digital media conditional access system for handling digital media content
US20040068659A1 (en) Method for secure distribution of digital data representing a multimedia content
US20050198662A1 (en) Content distribution system
EP0936774A1 (en) Recording of scrambled digital data
US7239704B1 (en) Method and apparatus for recording of encrypted digital data
US20020076195A1 (en) Information recording apparatus and method, information processing terminal, method and apparatus, and recording medium
EP0923247A2 (en) Information broadcasting method, receiver and information processing apparatus
JP2002217894A (en) Method for data distribution service
US20040017918A1 (en) Process for point-to-point secured transmission of data and electronic module for implementing the process
JPH08125651A (en) Signal processing device
JP2006180562A (en) Cryptographic key system
WO2005045554A2 (en) System and method for using drm to control conditional access to broadband digital content