WO2002060179A1 - Procede, appareil et programme de protection contre la copie - Google Patents

Procede, appareil et programme de protection contre la copie Download PDF

Info

Publication number
WO2002060179A1
WO2002060179A1 PCT/JP2001/000506 JP0100506W WO02060179A1 WO 2002060179 A1 WO2002060179 A1 WO 2002060179A1 JP 0100506 W JP0100506 W JP 0100506W WO 02060179 A1 WO02060179 A1 WO 02060179A1
Authority
WO
WIPO (PCT)
Prior art keywords
video
dvd
dvd video
computer
output terminal
Prior art date
Application number
PCT/JP2001/000506
Other languages
English (en)
Japanese (ja)
Inventor
Toshiro Obitsu
Hisamichi Higuchi
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2001/000506 priority Critical patent/WO2002060179A1/fr
Publication of WO2002060179A1 publication Critical patent/WO2002060179A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy

Definitions

  • the present invention relates to a duplication preventing device, a duplication preventing method, and a program for executing duplication prevention for preventing duplication in a reproduction device having no duplication preventing function.
  • DVD video discs (hereinafter referred to as “DVD”) can now be played in software, not in hardware, but only in playback applications.
  • Soft playback has the feature that it does not depend on the PC itself as long as the performance of the PC used for playback satisfies a certain standard and a DVD-ROM drive can be connected.
  • DVDs that cannot be copied by commercially available DVD players cannot be copied to VCRs or the like due to protection against duplication. For example, a method of preventing duplication by outputting a television signal based on the macrovision standard in hardware is widely used.
  • personal computers that have a TV output terminal (including a composite or S terminal) and are equipped with a DVD-ROM drive at the time of manufacture also have a copy protection function like a DVD player.
  • Japanese Patent Application Laid-Open No. 2000-20969 discloses a device for inputting digital sound / image data per se, which uses digital watermark information embedded in the input data. A method is described in which a device reads the data and feeds it back to a storage control means of the device, and stores only a copy-permitted one in a media. Furthermore, in Japanese Patent Application Laid-Open No. Hei 10-174507, when a video signal subjected to copy protection processing is input from an external device, the device described in the Japanese Patent Application Publication No. Although the video signal is output through the loop, a method is described in which the video recording function of the device is protected by detecting and notifying a copy flag indicating the prevention of duplication in digital video.
  • each of the inventions described in the above three publications prevents duplication by embedding a digital watermark in digital information.However, the amount of hardware required to read digital watermark information from a digital disk increases. In other words, the cost is high. Furthermore, the above-mentioned invention relates to a recording method of a digital disk, and does not serve as a means for solving a problem of a device that cannot output a video because it does not have a copy protection function.
  • the present invention has been made to solve such a problem, and is intended to prevent a computer with a television output terminal having a copy protection function from hindering the expandability of a computer and to output an image while preventing illegal copying. It is an object of the present invention to obtain a duplication preventing apparatus, a duplication preventing method, and a program for executing duplication prevention for preventing duplication. Disclosure of the invention
  • the present invention relates to a DVD video playback means for determining whether or not a medium to be played back is a DVD video when the DVD video is played back by a DVD video playback application in a computer having a video output terminal; If it is determined that the media to be played is DVD video by the means, And a setting change unit for setting the video output setting of the video output terminal to FF.
  • the processing by the DVD video judging means is performed by the CPU using application software
  • the processing by the setting changing means is also performed by the system controller changing the register of the VGA controller in accordance with an instruction from the CPU. It is done in.
  • the DVD video determination means determines that the video is DVD video when the compression method of the medium to be reproduced is MPEG2 and the overlay is 640 pixels ⁇ 480 pixels or more. It is characterized by determining.
  • MPEG2 is one of the video compression formats and is used for DVD and digital broadcasting.
  • a DVD can be reliably distinguished from a video CD or the like in MPEG1 format or image data for a portable terminal in MPEG4 format.
  • VHS video does not have a screen size standard
  • video CD has 240 pixels x 180 pixels
  • DVD screen size standard has 720 pixels X 480 pixels or 720 pixels X 576 pixels. Based on a small size of 720 pixels x 480 pixels, this is converted to a 4: 3 format, and the minimum data size is the minimum. You can distinguish DVD from other media.
  • the present invention also provides a computer with a video output
  • the present invention also provides a computer with a video output
  • FIG. 1 is a block diagram schematically illustrating the principle of the present invention.
  • FIG. 2 is a block diagram illustrating the structure of the VGA controller shown in FIG.
  • FIG. 3 is a flowchart illustrating the duplication preventing operation of the present invention in detail.
  • FIG. 1 is a block diagram simply illustrating the principle of the present invention, and shows a personal computer main body and peripheral devices connected to the personal computer main body.
  • the PC 10 is composed of a CPU 11, a system controller 12 for controlling the PC system, a liquid crystal display (LCD) 13 provided on the PC, a VGA controller 14, which is a graphics adapter, It has a PC I / I SA bus bridge 15 and a DVD-ROM drive 16, all of which are connected by a PCI bus or ISA path.
  • the personal computer 10 is provided with a television output terminal 18 and a CRT output terminal controlled by the VGA controller 14. Note that the TV output terminal 18 includes a composite S terminal and the like.
  • the TV output terminal 18 is connected to the video input terminal 21 of the VCR 20 so that images can flow from the personal computer to the VCR 20. Further, a video output terminal 22 provided on the video deck 20 is connected to a video input terminal 24 of a commercial television 23 so that an image flows from the video deck 20 to the commercial television 23.
  • DVD-ROM drive 16 shown in the figure is a drive that is later added to the personal computer 10, and the specifications of the personal computer 10 consider the connection of the DVD-ROM drive during the basic design. It is assumed that the DVD does not have a hardware duplication prevention function.
  • the DVD-ROM drive 16 reproduces DVD using application software for DVD reproduction.
  • the copy prevention processing of the present invention will be briefly described. If you start the application software for DVD playback and try to play a DVD whose copying is normally prohibited, first, the CPU 11 determines whether the media to be played is a DVD or not. The determination is made using application software for DVD playback. In the case of DVD, the system controller 12 changes the register of the VGA controller 14 according to an instruction from the CPU 11 so that the output setting of the TV output terminal 18 is set to OFF. With this processing, DVD video cannot be output from the TV output terminal, so copying can be prevented even on a personal computer that does not have a copy protection function. Next, with reference to FIG. 2 and FIG. 3, a detailed operation of the anti-duplication processing of the present invention will be described.
  • FIG. 2 is a block diagram illustrating the structure of the VGA controller 14 shown in FIG.
  • the VGA controller 14 has a host bus interface 30, an interface to the PCI bus, a memory controller / interface 34, and a D / A converter for CRT as shown in the figure. It is equipped with a CRT.D AC42, an LCD engine 43 for outputting to LCD, and a TV engine 44 for outputting to TV, and a drawing coprocessor 31 to control graphics processing, and a VGA.
  • Graphics controller 32 video 1 interface 33, first display controller 35, second display controller 36, first palette 38 for first graphics data 37, second palette 38 for second graphics data 39 It has various functions, such as 40, pack-end video and stream 41.
  • the TV engine 44 is a controller for controlling the output of the TV output terminal 18. The ON / OFF of the video output can be changed by changing the register of the TV engine 44.
  • FIG. 3 is a flowchart illustrating a detailed operation related to the copy protection process of the present invention. Insert the DVD video disc 17 into the DVD-ROM drive 16 and start the DVD video playback application (S100). The CPU accesses the DVD-ROM drive using the DVD video playback application (S101), and determines the type of the medium in the DVD-ROM drive based on the content of the application (S102).
  • the compression format of the reproduction medium is MPEG2 (S103). If it is not MPEG2 (S103, NO), the CPU 11 Judgment is not D, and the copy protection processing is not performed, and the DCD 13 and the CRT monitor connected to the CRT output terminal 19 are displayed at the ratio of the screen size recorded on the DVD video disc 17 A playback display window is displayed (S108). Then, DVD playback is started by the DVD video playback application (S109).
  • the DVD playback application records the information on the DVD video disk 17 to the VAG driver.
  • the information of a certain picture size is read, and an overlay is instructed (S104).
  • the overlay is less than 640 pixels X 480 pixels (S105, YE S)
  • the CPU 11 determines that the playback medium is not a DVD, and does not perform the copy protection processing, but executes S1 as described above. 08 and S109 are performed.
  • the overlay is smaller than 640 pixels X 480 pixels (S105, NO)
  • the CPU 11 determines that the playback medium is a DVD, recognizes that the playback medium is a DVD, and performs TV protection as copy prevention processing.
  • the system controller 12 rewrites the register of the VGA controller 14 according to an instruction from the CPU 11.
  • the register is included in the TV engine 44, and by changing the register so that the TV output becomes OFF, the video output from the TV output terminal 18 is not performed (S107).
  • the processing of S108 and S109 is performed in the same manner as described above.
  • the Macrovision standard when playing back a DVD that cannot be copied normally when the PC has a TV output terminal, uses a Macrovision standard TV that includes a duplication prevention signal in the playback video. It must be an output signal, but this is not possible with a PC that does not have a copy protection function in terms of hardware. However, stopping the television output automatically as described above solves the problem of copy protection. By performing such processing, it is possible to play DVDs with playback software in any environment with the performance of a computer.
  • the duplication preventing apparatus provides a computer having a video output When a D-video is played back by a DVD-video playback application, a DVD-video determination unit that determines whether the media to be played back is a DVD video, and a media to be played back by the DVD video playback determination unit is determined to be a DVD video.
  • the computer is provided with a setting change unit that sets the video output setting of the video output terminal of the computer to OFF, so that even a device having no copy protection function can prevent DVD-Video copying. .
  • DVD video judging means judges that the DVD is a DVD video when the compression method of the medium to be reproduced is MPEG2 and the overlay is 640 pixels X 480 pixels or more, the video CD And video compression or video compression using other compression methods. DVD video can be automatically identified by an easy method without any additional hardware, and duplication is prevented. be able to.
  • the duplication preventing method according to the present invention is characterized in that, in a computer with a video output terminal, when a DVD video is reproduced by a DVD video reproducing application, it is determined whether or not the medium to be reproduced is a DVD video and the DVD video is reproduced. Since the video output setting of the video output terminal in the computer is turned off, the duplication can be prevented more easily and reliably than the conventional duplication preventing method.
  • the program according to the present invention is provided for determining whether or not a medium to be played back is a DVD video when the DVD video is played back by a DVD video playback application in a computer having a video output terminal. Executes the process of turning off the video output setting of the video output terminal in the computer, so that this program can be easily installed on the target device without any additional hardware, Can be prevented from being duplicated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Storage Device Security (AREA)

Abstract

L'invention concerne un procédé permettant de déterminer si un support vidéo est un DVD ou non pendant une lecture sur un ordinateur à l'aide de terminaux de sortie utilisant une application de lecture de DVD. Lorsque ledit support vidéo utilise une compression MPEG2 et qu'un segment de recouvrement est de 640 pixels par 480 pixels ou plus, on considère que ce support est un DVD. Dans ce cas, la sortie vidéo de l'ordinateur est éteinte.
PCT/JP2001/000506 2001-01-26 2001-01-26 Procede, appareil et programme de protection contre la copie WO2002060179A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/000506 WO2002060179A1 (fr) 2001-01-26 2001-01-26 Procede, appareil et programme de protection contre la copie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/000506 WO2002060179A1 (fr) 2001-01-26 2001-01-26 Procede, appareil et programme de protection contre la copie

Publications (1)

Publication Number Publication Date
WO2002060179A1 true WO2002060179A1 (fr) 2002-08-01

Family

ID=11736950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/000506 WO2002060179A1 (fr) 2001-01-26 2001-01-26 Procede, appareil et programme de protection contre la copie

Country Status (1)

Country Link
WO (1) WO2002060179A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7411568B2 (en) 2003-03-10 2008-08-12 Kabushiki Kaisha Toshiba Method and apparatus for controlling display monitors provided on an electronic apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09298737A (ja) * 1996-04-30 1997-11-18 Toshiba Corp ネットワークを利用した動画再生システム
JPH11136622A (ja) * 1997-10-31 1999-05-21 Toshiba Corp 映像表示装置およびコンピュータシステム並びに映像信号出力制御方法
JPH11176087A (ja) * 1997-12-10 1999-07-02 Sony Corp データ再生方法、データ再生システム、及びドライブ装置
JP2000175188A (ja) * 1998-12-01 2000-06-23 Victor Co Of Japan Ltd 情報記録装置
JP2000311436A (ja) * 1999-04-28 2000-11-07 Hitachi Ltd 再生装置
JP2000324443A (ja) * 1999-05-14 2000-11-24 Hitachi Ltd 符号化装置および記録装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09298737A (ja) * 1996-04-30 1997-11-18 Toshiba Corp ネットワークを利用した動画再生システム
JPH11136622A (ja) * 1997-10-31 1999-05-21 Toshiba Corp 映像表示装置およびコンピュータシステム並びに映像信号出力制御方法
JPH11176087A (ja) * 1997-12-10 1999-07-02 Sony Corp データ再生方法、データ再生システム、及びドライブ装置
JP2000175188A (ja) * 1998-12-01 2000-06-23 Victor Co Of Japan Ltd 情報記録装置
JP2000311436A (ja) * 1999-04-28 2000-11-07 Hitachi Ltd 再生装置
JP2000324443A (ja) * 1999-05-14 2000-11-24 Hitachi Ltd 符号化装置および記録装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7411568B2 (en) 2003-03-10 2008-08-12 Kabushiki Kaisha Toshiba Method and apparatus for controlling display monitors provided on an electronic apparatus
US8957832B2 (en) 2003-03-10 2015-02-17 Kabushiki Kaisha Toshiba Method and apparatus for controlling display monitors provided on an electronic apparatus

Similar Documents

Publication Publication Date Title
US6278807B1 (en) Data recording/reproducing apparatus, data recording/reproducing method applied to the apparatus, and computer program product used in data processing apparatus
JP4170424B2 (ja) コンピュータ
TW200302023A (en) Data playback apparatus and method
US7302573B2 (en) Computer system and method for controlling output of reproduced video data
US8174420B2 (en) Video encoding apparatus and method having output restriction function
JP3609779B2 (ja) 情報記録装置及び情報記録媒体
US7130253B2 (en) Disk DVD-ROM drive unit with a playback speed control and disk drive method
JPWO2004064062A1 (ja) 記録装置、記録方法、記録媒体、及びプログラム
WO2002060179A1 (fr) Procede, appareil et programme de protection contre la copie
CN100380949C (zh) 播放接收机及记录方法
JP2000201269A (ja) デ―タ記録装置とデ―タ再生装置とデ―タ記録再生装置
JP2000175188A (ja) 情報記録装置
JP2001016538A (ja) コンピュータシステム及びビデオデータ再生出力制御方法
JP2001110137A (ja) コピー防止処理が施されたディスクおよびディスクプレーヤ
JP4245469B2 (ja) コンピュータシステム及びビデオ再生出力制御方法
US20080037959A1 (en) Information processing apparatus and playing method
US8442378B2 (en) Video recording device
JP2008217946A (ja) 再生装置
US20060215985A1 (en) Data recording/reproducing device, data processing method and program
JP2006004376A (ja) 情報再生装置
JP4857511B2 (ja) 再生装置および方法、記録媒体、並びにプログラム
JP2003308647A (ja) 情報記録装置、情報記録方法、情報告知装置、情報告知方法、情報再生装置、情報再生方法及び情報記録媒体
KR100932748B1 (ko) 오디오 재생장치가 내장된 영상표시기기의 화면표시방법및 장치
JP2002044591A (ja) ビデオディスクプレイヤ及びビデオディスク再生方法並びにビデオディスク再生用ソフトウェアを記録した記録媒体
JP2004104282A (ja) Ｄｖｄが再生できるコンピューターシステム及びｔｖアナログ信号出力の制御方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): DE FR GB

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP