JPH11146329A - Method for inputting and releasing scramble signal in digital video player - Google Patents

Method for inputting and releasing scramble signal in digital video player

Info

Publication number
JPH11146329A
JPH11146329A JP9337578A JP33757897A JPH11146329A JP H11146329 A JPH11146329 A JP H11146329A JP 9337578 A JP9337578 A JP 9337578A JP 33757897 A JP33757897 A JP 33757897A JP H11146329 A JPH11146329 A JP H11146329A
Authority
JP
Japan
Prior art keywords
signal
digital
video player
digital video
scramble
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.)
Pending
Application number
JP9337578A
Other languages
Japanese (ja)
Inventor
Chiyo Sekioka
千代 関岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP9337578A priority Critical patent/JPH11146329A/en
Publication of JPH11146329A publication Critical patent/JPH11146329A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a system audible of lots of digitized works such as motion picture, video and music. SOLUTION: A digital signal fed from a digital storage medium is given to a built-in D/A converter 2, a scramble signal encryption device 3 connected directly to the D/A converter 2, and a copy guard signal encryption device 4, and a resulting analog color difference signal (Y, YB, YR) is subject to scramble signal processing and reception of a copy guard signal simultaneously so that the extraction of the color difference signal not scrambled nor copy-guarded is attained. After the processing, the color difference signal is given to a scramble signal decoding device 5 built in a digital video player 1, where scrambling is descrambled and the resulting signal is extracted from a video output terminal.

Description

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

【０００１】[0001]

【発明の属する技術分野】この発明は違法複製を防止す
る目的で、劣化することのないデジタル信号をアナログ
信号化した後に色差信号をスクランブル暗号化及びコピ
ーガード暗号化したのちスクランブル解除しビデオ出力
端子から信号出力するデジタル・ビデオ・プレーヤーに
おけるスクランブル信号の入力及び解除方法に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention aims at preventing illegal duplication by converting a non-deteriorating digital signal into an analog signal, scrambling and encrypting a color difference signal, and then descrambling and descrambling the video signal. The present invention relates to a method for inputting and releasing a scramble signal in a digital video player which outputs a signal from a digital video player.

【０００２】[0002]

【従来の技術】従来、地域コードエリアを認識した場合
に再生を可能にできるデジタルビデオディスクプレーヤ
ーがあった。2. Description of the Related Art Conventionally, there has been a digital video disc player capable of reproducing when an area code area is recognized.

【０００３】[0003]

【発明が解決しようとする課題】これには次のような欠
点があった。 （イ）地域コードエリア内の誰でもが無制限に再生出
来、また同一エリア内では他人に譲渡することが可能で
あるため映像、音声等のソフトの権利を保護する手段が
なかった。そのためデジタルビデオディスク接続は構築
されてもソフト権利保護の兼ね合いで商品として市場で
流通させることが非常に困難であった。 （ロ）依ってデジタルビデオディスクソフトの流通は一
部に限定されておりそれに伴いデジタルビデオディスク
プレーヤーも普及しづらい。This has the following disadvantages. (A) Anyone in the area code area can play unlimitedly and can be transferred to another person in the same area, so there is no means for protecting the right of software such as video and audio. Therefore, even if the digital video disk connection is established, it is very difficult to distribute it as a product in the market in consideration of software right protection. (B) Therefore, the distribution of digital video disc software is limited to a part, and accordingly, digital video disc players are hard to spread.

【０００４】[0004]

【課題を解決するための手段】デジタル・ビデオ・プレ
ーヤー（１）に内蔵されたデジタル・アナログ信号変換
機（２）を設ける。次にデジタル・アナログ信号変換機
（２）に直結されたスクランブル信号暗号化機（３）を
設ける。そしてデジタル・ビデオ・プレーヤー（１）に
内蔵されたコピーガード信号暗号化機（４）を設ける。
更にデジタル・ビデオ・プレーヤー（１）に内蔵された
スクランブル信号解除機（５）を提供する。本発明は以
上のような構成よりなるデジタル・ビデオ・プレーヤー
におけるスクランブル信号の入力及び解除方法である。A digital-to-analog signal converter (2) built in a digital video player (1) is provided. Next, a scramble signal encryptor (3) directly connected to the digital / analog signal converter (2) is provided. Then, a copy guard signal encryptor (4) built in the digital video player (1) is provided.
The present invention further provides a scramble signal canceller (5) built in the digital video player (1). The present invention relates to a method for inputting and releasing a scramble signal in a digital video player having the above configuration.

【０００５】[0005]

【発明の実施の形態】以下本発明の実施例について説明
する。 （イ）デジタル・ビデオ・プレーヤー（１）に内蔵され
たデジタル・アナログ信号変換機（２）を設ける。 （ロ）デジタル・アナログ信号変換機（２）に直結され
たスクランブル信号暗号化機（３）を設ける。 （ハ）デジタル・ビデオ・プレーヤー（１）に内蔵され
たコピーガード信号暗号化機（４）を設ける。 （ニ）デジタル・ビデオ・プレーヤー（１）に内蔵され
たスクランブル信号解除機（５）を設ける。 本発明は以上のような構成からなりデジタル記憶媒体か
ら送られたデジタル信号は内蔵されたデジタル・アナロ
グ信号変換機（２）及びデジタル・アナログ信号変換機
（２）に直結されたスクランブル信号暗号化機（３）と
コピーガード信号暗号化機（４）を経由しアナログ化さ
れた色差信号（Ｙ，ＹＢ，ＹＲ）はスクランブル信号化
とコピーガード信号入力を同時に行われる。これにより
スクランブル化、コピーガード化されていない色差信号
を取り出すことが不可能になる。この行程後その色差信
号をデジタル・ビデオ・プレーヤー（１）に内蔵された
スクランブル信号解除機（５）でスクランブル解除しビ
デオ出力端子から信号を取り出す。尚、スクランブル信
号解除機（５）は外部モニターにに装着してもよい。Embodiments of the present invention will be described below. (A) A digital-to-analog signal converter (2) built in a digital video player (1) is provided. (B) A scramble signal encryptor (3) directly connected to the digital / analog signal converter (2) is provided. (C) A copy guard signal encryptor (4) built in the digital video player (1) is provided. (D) A scramble signal canceller (5) built in the digital video player (1) is provided. According to the present invention, a digital signal sent from a digital storage medium having the above-described configuration is used to convert a digital signal from a digital storage medium into a built-in digital / analog signal converter (2) and a scrambled signal encryption directly connected to the digital / analog signal converter (2). The color difference signals (Y, YB, YR), which have been converted into analog signals via the device (3) and the copy guard signal encryptor (4), are simultaneously converted into a scramble signal and a copy guard signal. This makes it impossible to extract a color difference signal that is not scrambled or copy guarded. After this process, the color difference signal is descrambled by a scramble signal descrambler (5) built in the digital video player (1), and a signal is taken out from a video output terminal. The scramble signal canceller (5) may be mounted on an external monitor.

【０００６】[0006]

【発明の効果】（１）デジタル／アナログ化、スクラン
ブル信号暗号化、コピーガード化を１行程で行うのでス
クランブル化、コピーガード化されていない色差信号を
取り出すことが不可能になり、違法複製防止が出来、著
作権の保護になる。 （２）著作権が保護されることによりデジタル化された
多くの映画、映像音楽等の作品が視聴できるようにな
る。 （３）デジタルビデオのマーケットがより多く増大し産
業の発展に寄与できる。(1) Since digital / analog conversion, scrambled signal encryption, and copy guarding are performed in one process, it is impossible to extract a color difference signal that is not scrambled or copy guarded, thereby preventing illegal duplication. To protect copyright. (2) Many copyrighted works such as movies, video and music can be viewed by copyright protection. (3) The digital video market will increase more and contribute to the development of industry.

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

【図１】本発明の構成図である。FIG. 1 is a configuration diagram of the present invention.

【図２】本発明の別の実施例を示す図である。FIG. 2 is a diagram showing another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１ デジタル・ビデオ・プレーヤー ２ デジタル・アナログ信号変換機 ３ スクランブル信号暗号化機 ４ コピーガード信号暗号化機 ５ スクランブル信号解除機 ６ モニター DESCRIPTION OF SYMBOLS 1 Digital video player 2 Digital-analog signal converter 3 Scramble signal encryption device 4 Copy guard signal encryption device 5 Scramble signal release device 6 Monitor

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】デジタル・ビデオ・プレーヤー（１）に内
蔵されたデジタル・アナログ信号変換機（２）でアナロ
グ化された色差信号（Ｙ，ＹＢ，ＹＲ）をデジタル・ア
ナログ信号変換機（２）に直結されたスクランブル信号
暗号化機（３）でスクランブル信号化しデジタル・ビデ
オ・プレーヤー（１）に内蔵されたコピーガード信号暗
号化機（４）でコピーガード信号を入力し、その信号を
デジタル・ビデオ・プレーヤー（１）に内蔵されたスク
ランブル信号解除機（５）でスクランブル解除しビデオ
出力端子から信号を取り出す方法。1. A digital-to-analog signal converter (2) for converting a color difference signal (Y, YB, YR) analogized by a digital-to-analog signal converter (2) built in a digital video player (1). A scrambled signal encryptor (3) directly connected to the digital video player (1) converts the signal into a scrambled signal, and a copy guard signal encryptor (4) built in the digital video player (1) inputs a copy guard signal, and converts the signal into a digital signal. A method in which the scramble is canceled by a scramble signal canceller (5) built in the video player (1) and a signal is taken out from a video output terminal.
JP9337578A 1997-11-04 1997-11-04 Method for inputting and releasing scramble signal in digital video player Pending JPH11146329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9337578A JPH11146329A (en) 1997-11-04 1997-11-04 Method for inputting and releasing scramble signal in digital video player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9337578A JPH11146329A (en) 1997-11-04 1997-11-04 Method for inputting and releasing scramble signal in digital video player

Publications (1)

Publication Number Publication Date
JPH11146329A true JPH11146329A (en) 1999-05-28

Family

ID=18309978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9337578A Pending JPH11146329A (en) 1997-11-04 1997-11-04 Method for inputting and releasing scramble signal in digital video player

Country Status (1)

Country Link
JP (1) JPH11146329A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1130917A3 (en) * 2000-02-29 2003-09-17 Sony Corporation Copyright protected signal transmission apparatus and signal transmission method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1130917A3 (en) * 2000-02-29 2003-09-17 Sony Corporation Copyright protected signal transmission apparatus and signal transmission method

Similar Documents

Publication Publication Date Title
US6530021B1 (en) Method and system for preventing unauthorized playback of broadcasted digital data streams
US6438692B2 (en) Copy protection apparatus and information recording medium used in this copy protection apparatus
JP4208998B2 (en) RECORDING / REPRODUCTION SYSTEM, RECORDING DEVICE AND REPRODUCTION DEVICE HAVING COPY LIMIT FUNCTION
JP4019303B2 (en) ENCRYPTION DEVICE AND DECRYPTION DEVICE USING ENCRYPTION KEY INCLUDED IN ELECTRONIC WATERMARK AND METHOD THEREOF
CA2195939C (en) Apparatus and method for comprehensive copy protection for video platforms and unprotected source material
US6236727B1 (en) Apparatus, method and computer program product for protecting copyright data within a computer system
KR100332743B1 (en) Device and method for preventing illegal copy or unauthorized watching of digital image
JP2003517218A5 (en) A system that manages access between a method of protecting audio / visual streams and a service provider and a host device to which a smart card is attached.
JP2001521261A (en) Transmission system and transmission method
KR20040046676A (en) Broadcasting server system for protection and management of digital broadcasting contents, processing method in its
KR100336265B1 (en) System and method for copy protection for digital signals
JPH06124539A (en) Digital vtr
MXPA05002002A (en) Watermarking digital data at a user device.
JP3660815B2 (en) Digital broadcast signal receiving apparatus and recording / reproducing apparatus
JPH11146329A (en) Method for inputting and releasing scramble signal in digital video player
JP2000152214A (en) Data processing method, data processing unit and data storage medium
GB2322030A (en) Recording scrambled video data
US8300832B2 (en) System and method for copy protection for digital signals
KR100279523B1 (en) Copy protection device and information recording medium used in such a copy protection device
JP4336396B2 (en) Recording / reproducing apparatus, file conversion apparatus, digital signal file conversion prohibition system, and digital signal processing method
JPH1079730A (en) Decoder
Eskicioglu et al. Overview of multimedia content protection in consumer electronics devices
JP4040615B2 (en) Video signal transmission device
JP4042650B2 (en) Display device and display method
von Lohmann et al. Death by DMCA