Source: http://www.google.es/patents/US6978377?dq=flatulence
Timestamp: 2013-12-19 20:06:02
Document Index: 733228259

Matched Legal Cases: ['art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26']

Patente US6978377 - Copy protection using detailed copy control information - Google PatentesB�squeda Im�genes Maps Play YouTube Noticias Gmail Drive M�s »Iniciar sesi�n B�squeda avanzada de patentesPatentesBased on the detailed reproduction control information defining the reproduction control state of data to be transmitted, the CPU 12 of the data transmission apparatus creates a simplified reproduction control information roughly defining the reproduction control state of the data, stores the simplified...http://www.google.es/patents/US6978377?utm_source=gb-gplus-sharePatente US6978377 - Copy protection using detailed copy control information B�squeda avanzada de patentes N�mero de publicaci�nUS6978377 B1Tipo de publicaci�nConcesi�n N�mero de solicitudUS 09/719,708 N�mero de PCTPCT/JP2000/002494 Fecha de publicaci�n20 Dic 2005 Fecha de presentaci�n17 Abr 2000 Fecha de prioridad16 Abr 1999TarifaPagadasTambi�n publicado comoDE60037088D1, DE60037088T2, EP1089274A1, EP1089274A4, EP1089274B1, EP1852864A2, EP1852864A3, US7412606, US20060020829, WO2000063905A1 N�mero de publicaci�n09719708, 719708, PCT/2000/2494, PCT/JP/0/002494, PCT/JP/0/02494, PCT/JP/2000/002494, PCT/JP/2000/02494, PCT/JP0/002494, PCT/JP0/02494, PCT/JP0002494, PCT/JP002494, PCT/JP2000/002494, PCT/JP2000/02494, PCT/JP2000002494, PCT/JP200002494, US 6978377 B1, US 6978377B1, US-B1-6978377, US6978377 B1, US6978377B1 InventoresTomoyuki Asano, Yoshitomo Osawa, Teruyoshi Komuro, Ichiro Hamada Cesionario originalSony CorporationExportar citaBiBTeX, EndNote, RefManCitas de patentes (28), Otras citas (5), Citada por (9), Clasificaciones (31), Eventos legales (3) Enlaces externos: USPTO, Cesi�n de USPTO, EspacenetCopy protection using detailed copy control informationUS 6978377 B1 Resumen Based on the detailed reproduction control information defining the reproduction control state of data to be transmitted, the CPU 12 of the data transmission apparatus creates a simplified reproduction control information roughly defining the reproduction control state of the data, stores the simplified reproduction control information of the data in the packet header of a data packet carrying the data, stores the detailed reproduction control information in the data, and transmits the simplified reproduction control information and the detailed reproduction control information as well as the data to the data receiving apparatus 20 through the transmission channel 30 from the input-output interface 16. The CPU 22 of the data receiving apparatus 20 analyses the reproduction control state of the data contained in the data packet based on the simplified reproduction information and the detailed reproduction information contained in the data packet, and controls the reproduction of the data by the action of the media access part 26 according to the analysis result.
TECHNICAL FIELD This invention relates to a data processing system, a data processing method and a data processing apparatus.
BACKGROUND ART In recent years, a system of transmitting and recording such digital data as music information and image information by connecting a plurality of AV equipment through a digital filter for example at home has been gaining ground. For example, video camera, Digital Versatile Disk (DVD) (trade mark) and other AV equipment with an interface according to the IEEE (The International of Electrical and Electronics Engineers, Inc.) 1394 high-performance serial bus standard (hereinafter referred simply as the IEEE 1394 serial bus) which is a digital bus are being developed.
In order to prevent any copy by unauthorized users, for example, in the Minidisk (MD) (trade mark) system, a method called �SCMS (Serial Management System)� is used. This means information transmitted via a digital interface along with music information. This information indicates that the music data are either �copy free,� �copy once allowed� or �copy prohibited� data. On receiving music data from the digital interface, a minidisk recorder detects SCMS and if the data are copy prohibited, the music data are not recorded in a minidisk, and in case of copy once allowed data, the SCMS information is converted into copy-prohibited data and is recorded along with the music data received. In the case of copy-free data, the SCMS information is recorded as it is along with the music data received.
00: Copy free; 10: Copy once allowed; 01: No more copy allowed; 11: Originally copy prohibited. On receiving a data packet, the recording equipment records the data and examines the reproduction control information. When the reproduction control information is either �01� or �11� representing the prohibition of copy, the data received are not recorded. And when the reproduction control information is �10� representing copy allowed only once, the reproduction control information is converted into �01� representing no more copy allowed and then the data received are recorded in the recording media.
For example, as shown in FIG. 6, even if the transmitting apparatus 1 transmits �11� meaning copy prohibited for the reproduction control information contained in the packet header of data packets, when the reproduction control information meets a changing attack during its transmission and the reproduction control information changes into �10� indicating copy once allowed, the data receiving apparatus 2 having received the packet cannot detect that this data is originally copy prohibited, and records the data as the reproduction control information contained in the packet header allows a one-time recording.
DISCLOSURE OF THE INVENTION In view of such past problems, it is the object of the present invention to provide a data processing system, a data processing method and a data processing apparatus capable of showing a variety of reproduction control states that cannot be shown solely by reproduction control information storable in the packet header and of protecting effectively copyright in a meticulously thought-out manner.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of a data transmission system according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention is hereinafter explained with references to the drawings.
In the data transmission system of this mode of embodiment, the data transmitting apparatus 10 is a set top box designed to receive satellite digital multichannel broadcast programs coming from communication satellite, and consists of a central processing unit (CPU) 12, a memory 13, an input interface 14, user interface 15, input-output interface 16, etc. The input interface 14 is connected to a satellite antenna 18. And the input-output interface 16 is an IEEE (The International of Electrical and Electronics Engineers, Inc.) 1394 high performance serial bus interface (hereinafter referred to simply as �IEEE 1394 interface�) which is a digital interface, and is connected to the transmission channel 30. The transmission channel 30 is a transmission channel consisting of an IEEE 1394 serial bus.
The IEEE1394 standard calls the transmission action performed within a network as �subaction� and sets forth two types of subactions. In other words, these two subactions are defined as an asynchronous transfer mode used for normal data transmission for one of them and the other is a synchronous transfer mode that assures a transmission band called �Isochronous Data Transfer.�
The header includes a data length, a tag, a channel, a t code and a synchronization code �sy.�
The data length shows the length of data field. The tag shows the format of data transferred by the isochronous packet. The channel is used to identify and to receive a specific desired packet from among a plurality of isochronous packets transmitted on the IEEE 1394 serial bus. t code is a transaction code, and includes a value showing that it is an isochronous transfer. The synchronization code �sy� is used to exchange synchronization information between the transmitting side and the receiving side and to synchronize the image data, voice data and other contents data stored in the data field.
(a) Copy free; (b) Copy allowed for one more generation; (c) Copy allowed for two more generations; (d) No more copy allowed; (e) Originally copy prohibited. Upon receiving this music data from a satellite, the data transmission apparatus 10 judges in which of the five types of reproduction control mode (a)�(e) the data are.
FIG. 3 shows that x can be either �0� or �1.� The copyright mode bit shows how to interpret the reproduction control state specified by the copyright mode bit and the original/copy bit.
The setting of this copyright mode bit enables to vary the way the reproduction control state is interpreted when the respective bit for copyright and original/copy is �0,0,� in other words when the copyright bit is �0� meaning that the data is protected by copyright, and the original/copy bit is �0� meaning that the data are original, and the way the reproduction control state is interpreted when the respective bit of copyright and original/copy is �0,1,� in other words the copyright bit is �0� meaning that the data is protected by copyright, and the original/copy bit is �1� meaning that the data are a copy from the data on the interface and the data on the medium, and thus establishes two types respectively.
When the copyright mode bit is �0,� the copyright bit and the original/copy bit show the reproduction control state of the data on the interface, and when the copyright mode bit is �1,� the copyright bit and the original/copy bit show the reproduction control state of the data after they are copied on a medium such as a minidisk. Here, the data on the interface means data being transmitted or data not yet recorded on any recording medium. For example, data on the interface which can be copied for two generations becomes ones that can be copied for a generation only when they are recorded on a recording medium.
The copyright bit shows whether the data is protected by copyright or not. When the copyright bit is �0,� the data are protected by copyright, and when the copyright bit is �1,� the data are not protected by copyright.
The original/copy bit shows the data generation, in other words whether the data are original or a copy. If the original/copy bit is �0,� the data are original, and when the original/copy bit is �1,� this shows that the data are a copy.
This MD-EMI selection bit is effective only when the copyright mode bit, copyright bit and original/copy bits are respectively �0,0, and 1,� in other words when the copyright mode bit is �0,� the copyright bit and the original/copy bit show the state of reproduction control of the data on the interface; when the copyright bit is �0,� this means that the data are protected by copyright; and if the original/copy bit is �1,� this means that the data are a copy.
The MD-EMI selection bit being �0� shows that the reproduction control information to be stored in the packet header will be �11,� and the MD-EMI selection bit being �1� shows that the reproduction control information to be stored in the packet header will be �01.� The reproduction control information �11� shows originally copy prohibited as described below, and the reproduction control information �01� shows that any further copy is prohibited.
In other words, upon receiving music data from a satellite, the data transmitting apparatus 10 judges in which state of the five types of reproduction control state (a)�(e) the data are; and stores in the header of the data packet, as easily identifiable reproduction control information, a reproduction control information �00� representing copy free when the reproduction control state is (a), a reproduction control information �10� representing copy allowed for a limited number of generations when the reproduction control state is (b) or (c), a reproduction control information �01� representing no more copy allowed when the reproduction control state is (d), and a reproduction control information �11� representing originally copy prohibited when the reproduction control state is (e).
In other words, if the simplified reproduction control information of the data packet sent from the data transmitting apparatus 10 is �00,� the data receiving apparatus 20 judges that the music data received are data that can be copied without any restriction and can be recorded on the recording media by the action of the media access part 26.
And if the simplified reproduction control information of the data packet that had been sent from the data transmission apparatus 10 is �10,� and if the three bits of copyright mode, copyright and original/copy given as the detailed reproduction control information are �1,0 and 0,� the CPU 22 of the data receiving apparatus 20 judges that the music data received are data that can be copied up to the second generation, and can record the same on a recording medium through the media access part 26. While recording the received music data that can be copied up to the second generation on a recording medium through the media access part 26, the CPU 22 of the data receiving apparatus renews the three bits representing the copyright mode, copyright and original/copy forming part of the detailed reproduction control information into �1, 0, 1� or the state of copy allowed only for a generation. In this way, music data that can be copied up to two generations will be reproduced in the form of data that can be copied for only a generation when they are reproduced by the media access part 26 from the recording medium. In this connection, it is also possible to make an arrangement whereby, instead of having the first and detailed reproduction control information stored on the recording medium, another information having the same meaning will be stored there.
And when the simplified reproduction control information of a data packet sent from the data transmitting apparatus 10 is �10� and the three bits for the copyright mode, copyright and original/copy given as detailed reproduction control information are �1, 0 and 1,� the CPU 22 of the data receiving apparatus 10 judges the music data received as data that can be copied for a generation, and can record through the action of the media access part 26 on a recording medium. While recording music data received that can be copied for only a generation on a recording medium, the CPU 22 of the data receiving apparatus 20 renews the four bits for copyright mode, copyright, original/copy, and MD-EMI selection constituting detailed reproduction control information into �0,0, 1, 1,� and simplified reproduction control information into �01 � meaning no more copy allowed for recording. In this way, music data that can be copied for a generation only will be reproduced as data the further reproduction of which is prohibited when they are reproduced through the media access part 26 from the recording medium. In this connection, it is also possible to make an arrangement whereby, instead of having the first and detailed reproduction control information stored on the recording medium, another information having the same meaning will be stored there.
Furthermore, when the simplified reproduction control information of a data packet sent from the data transmitting apparatus 10 is �01� or �11,� the CPU 22 of the data receiving apparatus 10 judges the music data received as data whose copy is prohibited, prohibits the recording of music data through the action of the media access part 26, converts simply the music data into analogue signals and controls the media access part 26 so that the music may be outputted from the voice output terminal 26A.
On the other hand, when the data receiving apparatus 20 that can identify detailed reproduction control information has received a data packet that includes simplified reproduction control information and detailed reproduction control information with a combination other than the ones shown in FIG. 5, the data receiving apparatus 20 judges that the data are illicit and destroys the data. And in FIG. 5, x shows that it can be either �0� or �1.�
In order to enable to interpret the seven types of reproduction control states specified by 4-bit detailed reproduction control information as shown in FIG. 5 as four types of reproduction control states as shown in FIG. 6, the simplified reproduction control information consists of data of such reproduction control state as those on a recording medium that can be copied up to two generations, data on a recording medium that can be copied for only a generation, and data on an interface that can be copied for only a generation defined in common by the simplified reproduction control information �10� as data that can be copied for only a generation, and defined as copy free by the simplified reproduction control information �00,� as no more copy allowed by the simplified reproduction control information �01,� and originally copy prohibited by the simplified reproduction control information �11.�
In this way, if the simplified reproduction control information of a data packet sent from the data transmitting apparatus 10 is �00,� the data receiving apparatus 20 judges the music data received as data that can be copied freely and can record the same on a recording medium through the action of the media access part 26.
And if the simplified reproduction control information of the data packet sent from the data transmitting apparatus 10 is �10,� the data receiving apparatus 20 judges the music data received as data that can be copied for a generation and can record on a recording medium through the action of the media access part 26. While recording the music data received that can be copied for a generation through the action of the media access part 26, the CPU 22 of the data receiving apparatus 20 renews the simplified reproduction control information to �01� or the state of no more copy allowed. In this way, music data that can be copied for a generation will be recorded on a recording medium through the action of the media access part 26. The music data recorded will be reproduced as data in the state of copy prohibited.
On the other hand, when the data receiving apparatus 20 that cannot identify detailed reproduction control information has recorded the contents on a recording medium according to the above method, the simplified reproduction control information will change from �10� to �01,� and will shift to a state of no more copy allowed. No change made in the detailed reproduction control information stored in the data results in differences in information. However, the data receiving apparatus 20 does not record as mentioned above in case the simplified reproduction control information is �01� and therefore there can be no possibility that the contents will be recorded fraudulently.
In addition, when the simplified reproduction control information of the data packet sent from the data transmitting apparatus 10 is �01� or �11,� the CPU 22 of the data receiving apparatus 20 judges the music data received as one whose copy is prohibited, prohibits the music data from being recorded by the media access part 26, simply converts the music data into analogue signals and controls the media access part 26 so that the music data may be outputted from the voice output terminal 26A.
Citas de patentes Patente citada Fecha de presentaci�n Fecha de publicaci�n Solicitante T�tuloUS5673357 *14 Feb 199530 Sep 1997Sony CorporationVideo recording, transmitting and reproducing apparatus with concurrent recording and transmitting or multiple dubbing of copy protected video signalsUS5889919 *4 Jun 199730 Mar 1999Sony CorporationCopy protect recording and playback system that enables single authorized recording of protected broadcasts be madeUS6131161 *3 Oct 199610 Oct 2000U.S. Philips CorporationMarking a digitally encoded video and/or audio signalUS6209092 *27 Ene 199827 Mar 2001U.S. Philips CorporationMethod and system for transferring content information and supplemental information relating theretoUS6298355 *20 Sep 19962 Oct 2001Hitachi, Ltd.Computer systemUS6317744 *23 Ago 199913 Nov 2001International Business Machines CorporationMethod, system and program products for browsing fully-associative collections of itemsUS6473560 *18 Mar 199929 Oct 2002U.S. Philips CorporationCopy protection schemes for copy protected digital materialUS6526144 *2 Jun 199825 Feb 2003Texas Instruments IncorporatedData protection systemUS6546414 *23 Ago 19998 Abr 2003International Business Machines CorporationMethod, system and program products for copying coupling facility lock structuresUS6574349 *17 Nov 19993 Jun 2003Koninklijke Philips Electronics N.V.Embedding and extracting supplemental data in an information signalUS6584275 *17 Dic 199724 Jun 2003Thomson Licensing SaControl of consumer recording equipmentUS6584552 *29 Oct 199924 Jun 2003Matsushita Electric Industrial Co., Ltd.Recording/reproducing apparatus, program recorded medium, recorded medium, cache device, and transmitterUS6594667 *23 Ago 199915 Jul 2003International Business Machines CorporationMethod, system and program products for modifying coupling facility structuresUS6609214 *23 Ago 199919 Ago 2003International Business Machines CorporationMethod, system and program products for copying coupling facility structuresUS6647202 *29 Jul 199911 Nov 2003Matsushita Electric Industrial Co., Ltd.Video signal reproducing apparatus capable of reproducing bitstreams and video signal reproducing methodUS6668324 *13 Dic 199923 Dic 2003Intel CorporationSystem and method for safeguarding data within a deviceUS6748485 *19 Oct 20008 Jun 2004Sony CorporationRecording medium, recording apparatus and recording/reproducing system for tracking use and transfer of dataUS6788604 *11 Dic 20007 Sep 2004Sony CorporationApparatus and method for determining the erasability of data in a memoryUS6850696 *27 Oct 20001 Feb 2005Koninklijke Philips Electronics N.V.Method of storing a real time stream of information signals on a disc like record carrierEP0598671A2 *3 Jun 199325 May 1994International Business Machines CorporationFunction distribution in a packet switched networkEP0860823A12 Jun 199726 Ago 1998Kabushiki Kaisha ToshibaApparatus having digital interface, network system employing the apparatus and copy protection methodEP0959467A219 May 199924 Nov 1999Sony CorporationInformation processing apparatus, information processing methods and presentation mediaEP1005044A2 *24 Nov 199931 May 2000Pioneer CorporationInformation recording medium, information recording apparatus and information reproducing apparatusEP1235220A2 *26 Feb 200228 Ago 2002Kabushiki Kaisha ToshibaMethod of coordinately processing pieces of copy information and information recording/reproducing apparatusJPH1079174A T�tulo no disponibleJPH1186437A T�tulo no disponibleJPH11186437A T�tulo no disponibleJPH11353795A T�tulo no disponible* Citada por examinadorOtras citasReferencia1 *Barni et al, Data Hiding for Fighting in Piracy, 2004, IEEE Signal Processing Magazine, pp. 28-39.2 *Morito et al, Digital Copy Protection Scheme Using Recording Medium Identifier, 1999, IEEE, pp. 174-178.3Patent Abstracts of Japan vol. 1999, No. 8, Jun. 30, 1999 & JP 11 086437 A (Toshiba Corp) Mar. 30, 1999.4 *Yafei et al, Research of Watermarking in Digital Video Broadcasting, 2002, IEEE, pp. 604-607.5 *Yoshida, Junko, Digital World Divided on watermark specs, 1998, Electronic Engineering Times, pp. 1-2.* Citada por examinador Citada por Patente citante Fecha de presentaci�n Fecha de publicaci�n Solicitante T�tuloUS7240206 *9 Nov 20043 Jul 2007Sony CorporationInformation signal copy managing method, information signal recording method, information signal output apparatus, and recording mediumUS7266691 *25 Oct 20004 Sep 2007Sony CorporationContents providing systemUS7412606 *13 Sep 200512 Ago 2008Sony CorporationCopy protection using detailed copy control informationUS7565683 *26 Jun 200221 Jul 2009Weiqing HuangMethod and system for implementing changes to security policies in a distributed security systemUS7650646 *24 Jul 200219 Ene 2010Sony CorporationInformation-recording apparatus, information reproduction apparatus, information-recording method, information reproduction method and computer programUS774804530 Mar 200429 Jun 2010Michael Frederick KenrichMethod and system for providing cryptographic document retention with off-line accessUS7949604 *26 Jun 200224 May 2011Sony CorporationInformation providing system, and information processing apparatus and methodUS8194519 *28 Feb 20055 Jun 2012Panasonic CorporationMethod for transmitting content with copy control information, content identification information and content status informationUS83851776 Mar 201226 Feb 2013Panasonic CorporationContent transmitting apparatus for transmitting content with copy control information, content identification information and content status information* Citada por examinadorClasificaciones Clasificaci�n de EE.UU.713/193, 713/165, 386/E05.004, 726/27, 380/201, G9B/20.002, 705/52, 380/231, 380/237, 380/203, 705/57, 726/26, 705/51 Clasificaci�n internacionalH04L12/64, G11B20/00, H04L12/40 Clasificaci�n cooperativaG11B2220/2529, G11B20/00768, G11B20/00086, H04N2005/91328, H04N5/913, H04L12/40117, H04N9/8205, H04N5/85, H04L12/40104, H04N5/765 Clasificaci�n europeaG11B20/00P11B1B, G11B20/00P, H04L12/40F10, H04L12/40F8, H04N5/913Eventos legales FechaC�digoEventoDescripci�n14 Mar 2013FPAYFee paymentYear of fee payment: 822 Jun 2009FPAYFee paymentYear of fee payment: 415 Dic 2000ASAssignmentOwner name: SONY CORPORATION, JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ASANO, TOMOYUKI;OSAWA, YOSHITOMO;KOMURO, TERUYOSHI;AND OTHERS;REEL/FRAME:011434/0676;SIGNING DATES FROM 20001108 TO 20001109GirarImagen originalP�gina principal de Google - Sitemap - Descargas masivas de USPTO - Pol�tica de privacidad - Condiciones de servicio - Acerca de Google Patentes - Danos tu opini�nDatos proporcionados por IFI CLAIMS Patent Services©2012 Google