WO2004100547A1 - コンテンツ配信システム、コンテンツ配信装置、コンテンツ記録再生装置並びにコンテンツ記録再生方法、並びにコンピュータ・プログラム - Google Patents
コンテンツ配信システム、コンテンツ配信装置、コンテンツ記録再生装置並びにコンテンツ記録再生方法、並びにコンピュータ・プログラム Download PDFInfo
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- WO2004100547A1 WO2004100547A1 PCT/JP2004/005560 JP2004005560W WO2004100547A1 WO 2004100547 A1 WO2004100547 A1 WO 2004100547A1 JP 2004005560 W JP2004005560 W JP 2004005560W WO 2004100547 A1 WO2004100547 A1 WO 2004100547A1
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- Prior art keywords
- content
- control information
- broadcast
- reproduction
- program
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 29
- 238000004590 computer program Methods 0.000 title claims description 17
- 238000009826 distribution Methods 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 claims description 20
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- 241000287828 Gallus gallus Species 0.000 claims 1
- 238000011112 process operation Methods 0.000 claims 1
- 230000033458 reproduction Effects 0.000 description 15
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- 238000004891 communication Methods 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
- H04H60/17—Arrangements for conditional access to broadcast information or to broadcast-related services on recording information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
- H04H60/18—Arrangements for conditional access to broadcast information or to broadcast-related services on copying information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
- H04N21/2541—Rights Management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8355—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/13—Arrangements for device control affected by the broadcast information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
- H04H60/16—Arrangements for conditional access to broadcast information or to broadcast-related services on playing information
Definitions
- the present invention provides a content distribution service that protects content from unauthorized duplication or unauthorized use.
- the present invention relates to a distribution system, a content distribution device, a content recording / reproducing device, a content recording / reproducing method, and a computer program.
- a content distribution system for protecting content distributed by digital broadcasting from unauthorized duplication or unauthorized use, content The present invention relates to a distribution device, a content recording / reproducing device, a content recording / reproducing method, and a computer program.
- the present invention relates to a content distribution system, a content distribution device, a content recording / reproducing device, and a content recording in a server-type broadcast in which viewing and listening is performed by temporarily storing and reproducing broadcast content on a receiving client side.
- the present invention relates to a playback method and a computer program, and particularly to a content delivery system, a content delivery device, a content recording / playback device, and a content delivery device for protecting broadcast content stored in a receiver from unauthorized duplication and unauthorized use.
- the present invention relates to a recording / reproducing method and a computer program. Scenic technology In the technical field of broadcasting, digitization of data is being rapidly promoted. This is because digital 'data' can use bandwidth more efficiently than analog 'data' and can achieve high image quality and high sound quality, and has high affinity with data other than video and audio. Rely on.
- the broadcast content is digital data
- one channel can carry four lines of data, and the high-definition data can be transmitted as it is.
- the service becomes more sophisticated and diverse. For example, by sending various system information such as EPG (Electrical Program Guide) together with video information and audio information, it is possible to improve services to users (viewers).
- EPG includes not only presentation information such as the broadcast schedule and program name of a broadcast program, but also functions such as recording reservation to a VTR.
- digital broadcast data is highly compatible with non-television information devices such as general-purpose computer systems, and digital broadcasting is expected to integrate broadcasting and communication.
- a digital computer tuner card for digital satellite broadcasting is installed in a general-purpose computer system, the received EPG data is analyzed in the computer, and an electronic program guide is displayed in a window on the computer display to switch programs. And recording reservation can be realized by mouse operation.
- bi-directional services can be developed by the upper link between the receiving client and the broadcasting station using the computer's network.
- a receiver TV or video recording / reproducing device
- a large-capacity storage such as a hard disk device
- Server-based broadcasting systems have become widespread.
- server-type broadcasting system in addition to watching in real time like a normal television reception, video and audio are distributed in advance so that they can be viewed from a specified time, and information distributed simultaneously It is possible to search for scenes and view the digests using such methods.
- An object of the present invention is to provide an excellent content distribution system, a content distribution device, a content recording / reproducing device, and a content recording / reproducing device that can appropriately protect content distributed by digital broadcasting from unauthorized duplication or unauthorized use. A method and computer program.
- a further object of the present invention is to provide an excellent content distribution system, content distribution device, content recording / reproducing device, and content for server-type broadcasting in which viewing and listening is performed by temporarily storing and reproducing the broadcast content on the receiving client side.
- a recording and reproducing method and a computer program are provided.
- a further object of the present invention is to provide an excellent content distribution system, a content distribution device, a content recording / reproducing device, and a content distribution system capable of suitably protecting broadcast content stored in a receiver from unauthorized duplication or unauthorized use. It is an object of the present invention to provide a content recording / reproducing method and a computer program.
- the present invention has been made in consideration of the above problems, and a first aspect of the present invention is a server-type content distribution system,
- a content distribution server that distributes a broadcast content including a data stream constituting a broadcast program, control information for channel selection, and program information;
- the distribution server inserts control information for channel selection and control information related to copyright protection of the content into a section of Z or program information.
- the content receiving client distributes the broadcast content, and the content receiving client accumulates the stored content in accordance with the control information for channel selection and / or the control information related to the copyright protection of the content entered in the section of the string and information.
- a content distribution system for controlling the reproduction processing operation and / or the recording reservation processing operation.
- system here refers to a logical grouping of multiple devices (or functional modules that realize specific functions), and each device or functional module is contained in a single housing. It does not matter whether or not there is a certain force.
- the receiving client corresponding to the server type digital broadcast receiving the content transmits the content.
- Appropriate control can be performed based on the copyright information of the content.
- detailed control of the display device built in or connected to the receiver can be performed.
- control information relating to the copyright protection of the content may include control information relating to the copy of the broadcast content and reproduction control information relating to the stored broadcast content.
- the playback control information includes the number of times the content has been played back, the restriction on the display angle in the content playback, and the expiration date of the content playback.
- playback control information on the stored broadcast content is included in the section of control information for channel selection and / or program information, the content described in the playback control information is used.
- the content reproduction operation or the recording reservation operation can be controlled based on the number of times of reproduction of the content, the display resolution restriction at the time of content reproduction, and the expiration date of the content reproduction.
- a second aspect of the present invention is a computer program described in a computer-readable form so as to execute a process for receiving and reproducing broadcast content in server-type broadcasting on a computer system,
- a receiving step of receiving a broadcast content comprising a stream of data constituting a broadcast program, control information for channel selection, and program information;
- the content recording reservation processing operation is controlled in accordance with the control information for channel selection and / or the control information related to the copyright protection of the content included in the section of the program information; and / or Controlling the playback processing operation of the stored content in accordance with the control information regarding the copyright protection of the content included in the control information for channel selection and / or the program information section. is there.
- the computer program according to the second aspect of the present invention defines a computer program written in a computer-readable format so as to realize predetermined processing on the computer system.
- a cooperative action is exerted on the computer system, and the content according to the first aspect of the present invention is obtained.
- the same operation and effect as those of the distribution system can be obtained.
- FIG 2 shows the hardware configuration of the receiver 10 that receives digital broadcast content. It is the figure which showed the example typically.
- FIG. 3 is a flowchart showing a content reproduction processing operation in the receiver 1.
- FIG. 4 is a flowchart showing a content recording reservation processing operation in the receiver 1.
- the MPEG 2 system stipulates a method for multiplexing individual streams such as coded video, audio, and additional data, and playing them back in synchronization with each other.
- MPEG 2 PS (Program S tre am) and MPE G2—TS (Transport S tream).
- PES packets containing data such as subtitles are divided into a plurality of TS buckets and transmitted in the same manner as video and audio packets.
- MPEG2—PS is supposed to be applied to data transmission and storage in an error-free environment, and since it can reduce redundancy, it can be used in DVDs (Digital Versatile Discs) and other powerful devices. It is used in digital 'storage media' using various error correcting codes.
- MPEG2—TS has data transmission errors such as broadcast and communication networks. It is supposed to be applied to the environment in which it occurs, and is used for digital broadcasting, etc., since multiple programs can be configured in one stream.
- a transport stream is composed of a plurality of 188-byte fixed-length TS (TransportStream) packets.
- the length of the 188-byte TS bucket is determined in consideration of the compatibility with the ATM (Asynchronous TransfernMode) cell length.
- the TS bucket is composed of a 4-byte fixed-length bucket 'header, a variable-length adaptation' field, and a payload.
- Packet 'header contains P
- the PID identifies the type of the TS bucket.
- PES Packet ke t i ze e d E l e m e n t a r S t r e am
- MPEG 2 method is used.
- audio coding for example, in the case of BS (BroadcasstSateletlite) digital broadcasting, MPEG2-AA
- the C (MPEG 2 Advanc e Au d i d Co d i n g) method is adopted.
- PES packets containing data such as captions are divided into a plurality of TS buckets and transmitted in the same manner as video and audio buckets.
- the transport stream contains a bucket of information described in a section format table of PS I (Program Security Information) or S i (Service Information). .
- PSI is information (control information for channel selection) required by a system for selecting and receiving a desired broadcast channel, including PAT (Program as sociation Table), PMT (PMT rogr am Map Ta ble), NIT (Ne two rk Infoformation Table), CAT (Cond ition Access Table).
- PAT Program as sociation Table
- PMT PMT rogr am Map Ta ble
- NIT Ne two rk Infoformation Table
- CAT Cond ition Access Table
- PAT describes the PID of the PMT corresponding to the program number.
- the PMT describes the video, audio, additional data and PID of the PC scale included in the corresponding program.
- the NIT describes detailed information on the entire broadcasting system. For example, information on all programs included in the network and the carrier frequency at which the target program is transmitted are described. In the CAT, information on the identification of the conditional access system and individual information such as contract information is described.
- SI is a section used for services of broadcasters.
- S I there are sections such as EIT (EventInformatiobTablue) and SDT (ServiceDescriviptioblTabib).
- EIT describes the detailed information and broadcast time of the program.
- the receiver processes these sections to display a program guide (EPG) or schedule recording.
- EPG program guide
- digital broadcasting (Communication) and digital broadcasting (Broadcas) have been already started in Japan.
- digital BS broadcasting in addition to ordinary SDTV (Standard Definition on Television), HDTV (High Defininitionitelevision) is broadcast. Also, digital terrestrial broadcasting is being studied.
- a descriptor is defined to put detailed information in each section, and by inserting this into a section, it is possible to transmit fine-grained information. I have.
- Table 1 shows the syntax of the digital copy control descriptor.
- the two bits of digita 1—recording—control_data_ (data for digital recording control) in the IJ control descriptor are used for copy control (generation management of copy). If these 2 bits are “00”, copy is free; if "1 1", copy is prohibited; if "10", only one generation is permitted. In other words, up to these two bits, copy control of CGMS (Copy Generation Man- age System) is performed.
- CGMS Copy Generation Man- age System
- tag 8 uimsbf digital— recording— control— data 2 bslbf maximum— bitrate— flag 1 bslbf reserved— future—use 1 bslbf copy— control— type 2 bslbf if (copy— contro
- the copy usage descriptor together with the digital 'copy control descriptor, Represents copyright information. It is possible to limit the resolution when outputting the stored image, or to limit the recording time when temporarily recording an image for which copying is prohibited in the video recording / reproducing apparatus.
- Table 2 shows the syntax of the copy usage descriptor.
- encryption-mode In the descriptor for contents, if encryption-mode is 0, the high-speed digital output must be encrypted even if CGMS can be copied without restrictions.
- the image-constraint_token limits the resolution when the stored image is output as analog.
- retention_mode indicates whether to limit the recording time when images for which copying is prohibited are temporarily recorded, and retention_state indicates that images for which copying is prohibited are temporarily recorded. Indicates the time limit for recording.
- retention_mode_X "0" means that the image can be temporarily stored for the time indicated by retenti on-state.
- Encryption_mode indicates the power to encrypt and output the content data from the high-speed digital terminal.
- a moving image being received is stored, and when a visitor is present, the screen being received is frozen. After a visitor returns, it has a function to chase and play back the video recorded on the HDD from the place where it was frozen.
- the retention-state of the content usage descriptor is effective especially in a video recording / reproducing apparatus having such a function when restricting copying of copy-protected contents.
- copyright protection is preferably achieved by inserting a digital 'copy control descriptor / coefficient use descriptor into the PMT.
- a content protection mechanism in a digital receiver that uses the above-described information transmission mechanism in broadcasting, transmits copyright information at the time of content reproduction in server-type broadcasting, and reproduces broadcast content. I did it.
- a server-type broadcast content control descriptor is defined as copyright information at the time of content reproduction.
- Table 3 shows the syntax of this server-type broadcast content control descriptor.
- the server-type broadcast content control descriptor can be inserted into the descriptor loop of the PMT, and if the descriptor is placed in the first loop of the PMT, all ESs included in the specified program will be used.
- This restriction can be applied to When a descriptor is placed in the ES loop of the PMT, it is possible to apply descriptor restrictions only to the specified ES. If this descriptor is placed in both the first loop and the ES loop, the restriction on the descriptor of the ES loop will take precedence over the descriptor of the first loop only for the specified ES. In this case, if there is no descriptor in another ES loop, the restrictions in the descriptor of the first loop will be applied.
- the store—content—control 1—descriptor in Table 3 is a 3-bit flag. If the flag is set to 1, the if statement below is valid, Content needs to be controlled according to the conditions of the if statement.
- resolution_c ontro l_f lag resolution control flag
- the 40-bit e X piratio n_date in the if statement is defined by AR IB STD-1 B 10 and is the same definition as JST-time used in J ST-time of TOT (Time Offset Table). And The Japan Standard Time (JST) is defined as "UTC (Universal Standard Time) + 9J hours.
- JST Joint Standard Time
- UTC Universal Standard Time
- the playback function is enabled until the defined time and exceeds the defined time. For example, if the receiver has a built-in HDD or other data recording media and can hold the content, the time limit described here is valid. In addition, this limitation shall be inherited for those media for which a time limit can be specified.
- the actual broadcasting system ⁇ operator can determine it according to its operation status.However, the operation is determined by the value of the digital 'copy control descriptor. It can be defined. For example, if the value of “copy prohibition” is set to digital “recording—control—data power” of digital “copy control descriptor”, recording is prohibited because recording is prohibited in ordinary broadcasting. No restrictions are possible.
- the operation restriction by the value of the digital 'copy control descriptor is only an example in the above, and the actual broadcasting system operator can determine the operation condition.
- each parameter specified in the server-type broadcast content control descriptor shown in Table 3 is one example, and the gist of the present invention is not limited to this.
- the parameters of the server-type broadcast content control descriptor are entered in the reserved_future_use area defined in the final field in the content usage descriptor shown in Table 2, and the server-type broadcast content shown in Table 3 is entered. It can be used as a substitute for the control descriptor.
- FIG. 1 schematically shows a configuration for transmitting digital broadcast content in a broadcasting system.
- the transmission system 1 includes a production unit 100, a transmission unit 200, and a transmission unit 300.
- each unit will be described.
- the production unit 100 corresponds to a site where each content of broadcast program information to be transmitted as digital broadcast content is produced. That is, the production unit 100 stores individual resources such as video and audio constituting a broadcast program, data such as subtitles, and resource elements such as control information and program information described in section format such as PSI and SI. Produce.
- PSI includes sections such as PAT, PMT, NIT, and CAT
- SI includes sections such as EIT and SDT (ibid.).
- a digital copy control descriptor that describes information related to the copyright protection of digital broadcast content, a content use descriptor, and a server-type broadcast content control descriptor are entered in sections such as PMT, EIT, and SDT.
- Broadcast content consisting of the main program consisting of individual streams such as video and audio, and the control information and program information for channel selection related to this is, for example, a LAN (Local Area Network) installed in broadcast station 1. ) Via the sending section
- transmission data is packetized by each of the content transmission system 201, the baseband control system 202, the AV encoder 203, and the subtitle super input 204, and passed to the transmission section 300.
- the program information is encoded in the multimedia encoding section 301 and passed to the content transmission system 302.
- the synthesizing unit 304 is a content transmission system
- modulation section 305 performs RF modulation on the combined signal, and transmits the resultant signal to receiving station 10 via the RF transmission path.
- the RF signal is first transmitted from the transmission antenna installed in the broadcasting station 1 to the broadcasting satellite 5, and then received by the receiving antenna of the receiver 10 via the transmission path.
- FIG. 2 shows the hardware configuration of the receiver 10 for receiving digital broadcast contents.
- An example is schematically shown.
- the receiver 10 is widely used in ordinary households, for example, in a form called STB (set 'top' box).
- a CPU (Central Processing Unit) 11 as a main 'controller' is interconnected with each hardware 'component via a bus 50 to provide overall control for each component. It is going to run.
- a CPU Central Processing Unit
- Broadcast waves received by an antenna are supplied to a tuner 51.
- the broadcast wave follows a prescribed format, but may be a cable broadcast wave or a terrestrial wave in addition to the above-mentioned satellite broadcast wave, and is not particularly limited.
- the tuner 51 tunes or selects a broadcast wave of a predetermined channel, and outputs received data to the subsequent demodulator 52.
- the demodulator 52 demodulates the digitally modulated received data. Note that the configuration of the tuner 11 can be appropriately changed or expanded according to whether the transmitted broadcast wave is analog or digital.
- the demodulated digital data is a “transport 'stream” (described above) that is formed by multiplexing MPEG2-compressed AV data and program information.
- the former AV data consists of video and audio information that constitutes the main body of the broadcast program, and subtitle data.
- the latter program information is data accompanying the broadcast program itself, and is described in a section format such as PSI or SI, and is used for EPG or program recording reservation.
- the TS decoder 53 interprets this transport stream, separates it into MPEG2 compressed AV data and program information, sends the former to the AV decoder 54, and sends the latter to the CPU 11 via the bus 50. I do.
- the TS decoder 53 may have a work data storage memory 53A locally.
- the AV decoder 54 When receiving the real-time AV data compressed by the MPEG 2 method from the TS decoder 53, the AV decoder 54 separates the video data and the compressed audio data from the TS decoder 53.
- the video data is MPEG2 decompressed to reproduce the original video signal, and the audio data is decoded by PCM (Pulse Code Modulation) and then synthesized and reproduced with additional sound. Let it be an audio signal.
- AV decoder 54 The work data storage memory 54A may be provided locally.
- the reproduced video signal is output to the display 61 via the multiplexer 55B, and the reproduced audio signal is output to the speaker 62 via the multiplexer 55A.
- the compressed video data and compressed audio data are not decompressed, but are transferred to the hard disk drive 17 via the bus 50, once recorded, and then decompressed by the coder 54 again using AV to reproduce and output.
- the user interface control unit 56 is a module that processes input operations from the user, and includes, for example, an operation button / switch (not shown) for direct manual operation by the user and an infrared (IR) device. It has a function to accept remote control from the remote controller 66 via the remote controller. It may also include a display panel for displaying the current settings and an LED indicator (not shown).
- the CPU 11 is a main controller that controls the entire operation of the receiver 10.
- the CPU 11 can also process control information / program information for channel selection transferred via the bus 50.
- control information and program information for channel selection are described in a section format such as PSI and SI, respectively (described above). These sections include digital copy control information, content use descriptors, and server-type broadcast content control descriptors that describe information related to copyright protection of digital broadcast content. Based on the contents of these descriptors, controls the real-time output of the received broadcast content, the playback output, and the processing operation of recording reservation, and protects the copyright of the content.
- RAM (Random Access Memory) 12 is a writable volatile memory used to load the execution program of the CPU 11 and write working data of the execution program.
- the ROM (Read On 1 y Memory) 13 permanently stores a self-diagnosis and initialization program to be executed when the power of the receiver 10 is turned on or an initialization program, and a microcode for hardware operation. This is a read-only memory.
- the serial input / output (SIO) controller 14 is a peripheral controller for performing serial data exchange with external devices of the receiver 10.
- SIO controller A high-speed modem 63 for modulating and demodulating transmission data on an analog telephone line is externally connected to the serial port provided by the router 14.
- the receiver 10 is connected to the Internet 7 as a wide area network by making a PPP (Point-to-Point Protocol) connection to a predetermined access point (not shown) by the high-speed modem 63. And form an upper link to the broadcaster.
- PPP Point-to-Point Protocol
- the 1394 interface 15 is a serial high-speed interface capable of transmitting and receiving data of about several hundreds of MBps.
- An IEEE 1394-compatible external device can be daisy-chained or connected to the IEEE 1394 port. Examples of the IEEE 1394-compatible device include a video camera 64 and a scanner (not shown).
- the hard disk drive (HDD) 17 is an external storage device for storing programs and data in a file format of a predetermined format, and usually has a relatively large capacity of about several GB. HDD 17 is connected to bus 50 via hard 'disk' interface 18. In the present embodiment, the HDD 17 is also used for storing received broadcast content, and the receiver 1 functions as a server-type broadcast content recording / playback apparatus.
- the card interface 18 is a device for realizing a bus protocol between the card type device 65 loaded in the card slot 19 and the bus 50.
- An example of the card-type device 65 is a credit card-sized PC card configured in a cartridge type.
- the PC card is a specification jointly formulated by PCMC IA (Persona ⁇ uter I M mp mp mp mp mp mp J mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp mp
- the display controller 57 is a dedicated controller for controlling display and output of broadcast program information and the like based on data broadcast contents.
- the display controller 57 generates an image signal of program information based on the display data and supplies the image signal to the multiplexer 55B.
- the CPU 11 also processes audio data included in the program information and supplies the processed audio data to the multiplexer 55A via the bus 50.
- the multiplexers 55 A and 55 B multiplex each of the display data and audio data supplied from the CPU 11 with the video data and audio data (and subtitles) as the broadcast program main body output from the AV decoder 54.
- the external output is made to each of the display 61 and the speaker 62.
- the CPU 11 decodes the content of the server-type broadcast content control descriptor inserted in the section such as PMT, EIT, and SDT in the program information described in the section format such as PSI or SI, and Performs the playback operation and the recording reservation operation that protect the copyright of type-broadcast contents.
- FIG. 3 shows a content reproduction processing operation in the receiver 1 in the form of a flowchart.
- step S1 it is checked whether or not a server-type broadcast content control descriptor has been inserted into the PMT as program information of the received broadcast content.
- step S If the server-type broadcast content control descriptor is inserted in the PMT, then it is checked whether play-control-flag (playback control flag) is set in the descriptor (step S). 2).
- step S6 If p 1 ay_c o n t ro l_f 1 a g is not set, the broadcast content can be reproduced without any restrictions (step S6).
- Step S3 If the play_control_flag is set, it means that there is an additional restriction on the playback of the stored content. Then, it is further checked whether the play_constraint_bit is set. Check (Step S3).
- Step S4 if ⁇ 1 ay—constrain t_bit power becomes 1, it means that there is an additional restriction on the playback of the stored content, and playback of more than the next number—of _p 1 ay is prohibited. (Step S4).
- step S5 If the number of reproducible times remains, the number of pixels specified by resolution—contro 1—f 1 ag (angle / resolution control flag) and e X piratio n_date—f 1 ag (valid Content playback is allowed within the time limit specified by the time limit flag (step S5).
- step S7 If it is determined in step S1 that the server-type broadcast content control descriptor has not been inserted into the PMT, it is then checked whether a digital 'copy control descriptor has been inserted into the PMT. Yes (Step S7).
- step S11 If the digital copy control descriptor is not inserted, the content can be reproduced without any restrictions (step S11).
- step S11 If these 2 bits are “00”, it means copy-free, and content can be played back without any restrictions. It is possible (step S11).
- step S10 the number of pixels specified by resolution—control_f 1 ag (resolution control flag) and e X piratio n_d at e_f 1 ag (expiration date flag) Content playback is allowed within the time limit specified by (step S10).
- FIG. 4 shows the recording reservation processing operation of the content in the receiver 1 in the form of a flowchart.
- a reserved program is selected (step S.21), and sections such as EIT and SDT are obtained from the program information SI of the reserved program (step S22).
- step S23 it is checked whether or not a server-type broadcast content control descriptor is inserted into a section such as EIT or SDT (step S23).
- Step S 24 If the server-type broadcast content control descriptor is inserted in the PMT, then, it is checked whether play_control_flag (playback control flag) is set in the descriptor (refer to FIG. 4). Step S 24).
- step S28 If p 1 ay_c contro l_f 1 ag is not set, the broadcast content can be reproduced without any restrictions, so that the reservation processing is performed without any restrictions (step S28).
- step S25 However, if P 1 ay_control_f 1 ag is set, it means that restrictions on the playback of the stored content are added, and then play—constrain t_bit is set. Further checks are made (step S25).
- Step S 26 if p 1 ay_constrain t_bit power S 1, it means that there is a restriction on the playback of the stored content, and the number of subsequent number— of _ 1 ay is checked ( Step S 26).
- step S27 If there is a remaining number of reproducible times, the number of pixels specified by reso 1 ution—control_f 1 ag (resolution control flag) and e X piratio n_d at e_f 1 ag (expiration date flag) Content reservation processing is performed within the specified time limit (step S27).
- step S23 If it is determined in step S23 that the server-type broadcast content control descriptor has not been inserted into the EIT or SDT section, then the EI It is checked whether a digital copy control descriptor is inserted in the section of T or SDT (step S29).
- step S33 If the digital copy control descriptor has not been inserted, the content can be reserved without any restrictions (step S33).
- step S 30 two bits of digital-recording-control-data (digital recording control data) in the digital 'copy control descriptor are checked.
- the 2-bit camera S is “11” or “01 J”, the limit of the number of pixels specified by resolution—control_f 1 ag (resolution control flag) and e X piration—data e_f 1 ag (expiration date flag ),
- the content reservation processing is allowed within the time limit specified by (step S32) . If these 2 bits are "10", only one generation is allowed to be copied, and reso1utlon—contro1_ Content reservation processing can be performed without being subject to playback restrictions by f1ag or exp i rat—on date_i 1ag (step S33).
- the present invention has been described in detail with reference to the specific embodiments.
- a recording / reproducing method and a computer program can be provided.
- an excellent content distribution system, content distribution device, and content recording which can suitably protect broadcast content stored in a receiver from unauthorized duplication or unauthorized use
- a playback device, a content recording / playback method, and a computer program can be provided.
- the behavior of a receiver can be described in detail by the copyright information of the content in server type broadcasting. This allows more detailed control of the content reproduction operation on the receiver side of the server-type broadcast content. By importing such server-type broadcast content processing into the SI section, it is possible to handle it as future reservation information.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Databases & Information Systems (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Software Systems (AREA)
- Mathematical Physics (AREA)
- Data Mining & Analysis (AREA)
- Television Signal Processing For Recording (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Television Systems (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN2004800005461A CN1698376B (zh) | 2003-05-09 | 2004-04-19 | 内容配送系统、内容配送装置、内容记录再现装置与内容记录再现方法 |
EP04728237A EP1517558A4 (en) | 2003-05-09 | 2004-04-19 | SYSTEM AND APPARATUS FOR CONTENT DISTRIBUTION, METHOD AND APPARATUS FOR RECORDING / READING CONTENTS, AND COMPUTER PROGRAM |
US10/520,684 US7904928B2 (en) | 2003-05-09 | 2004-04-19 | Content delivery system, content delivery apparatus, content recording and reproduction apparatus and content recording and reproduction method, and computer program |
Applications Claiming Priority (2)
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JP2003-132260 | 2003-05-09 | ||
JP2003132260A JP2004336576A (ja) | 2003-05-09 | 2003-05-09 | コンテンツ配信システム、コンテンツ配信装置、コンテンツ記録再生装置並びにコンテンツ記録再生方法、並びにコンピュータ・プログラム |
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PCT/JP2004/005560 WO2004100547A1 (ja) | 2003-05-09 | 2004-04-19 | コンテンツ配信システム、コンテンツ配信装置、コンテンツ記録再生装置並びにコンテンツ記録再生方法、並びにコンピュータ・プログラム |
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US (1) | US7904928B2 (ja) |
EP (1) | EP1517558A4 (ja) |
JP (1) | JP2004336576A (ja) |
KR (1) | KR20060009225A (ja) |
CN (1) | CN1698376B (ja) |
WO (1) | WO2004100547A1 (ja) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4592517B2 (ja) * | 2005-06-30 | 2010-12-01 | 株式会社東芝 | 情報処理システムおよび電子機器 |
JP4508082B2 (ja) * | 2005-10-31 | 2010-07-21 | ソニー株式会社 | 記録装置、記録方法、提供装置、および情報処理方法 |
JP4849885B2 (ja) | 2005-12-20 | 2012-01-11 | 株式会社ソニー・コンピュータエンタテインメント | ビデオエンコード装置、ビデオエンコード方法ならびにそれを用いた電子機器 |
US7917442B2 (en) * | 2006-09-21 | 2011-03-29 | Sony Corporation | System and method for relaxing media access restrictions over time |
JP2008153867A (ja) * | 2006-12-15 | 2008-07-03 | Toshiba Corp | ビデオサーバとその素材管理方法 |
KR101486357B1 (ko) | 2007-07-12 | 2015-01-26 | 엘지전자 주식회사 | 방송 신호 송수신 방법 및 방송 신호 수신 장치 |
JP4824127B2 (ja) | 2007-08-29 | 2011-11-30 | シーディーネットワークス カンパニー リミテッド | デジタルメディアコンテンツの無断複製(不正コピー)に対する保護 |
JP4439558B2 (ja) * | 2007-12-27 | 2010-03-24 | 株式会社東芝 | コンテンツ鍵生成装置、コンテンツ受信装置およびコンテンツ伝送方法 |
JP5169449B2 (ja) * | 2008-05-01 | 2013-03-27 | 富士通株式会社 | 無線通信装置及び受信方法 |
JP4582215B2 (ja) | 2008-07-10 | 2010-11-17 | ソニー株式会社 | コンテンツデータ管理装置、コンテンツデータ管理方法、及びコンテンツデータ管理プログラム |
CA2758104C (en) | 2009-04-07 | 2015-04-07 | Lg Electronics Inc. | Broadcast transmitter, broadcast receiver and 3d video data processing method thereof |
JP5195666B2 (ja) | 2009-06-23 | 2013-05-08 | 船井電機株式会社 | 映像信号処理装置 |
JP4629790B2 (ja) * | 2009-12-21 | 2011-02-09 | 日立コンシューマエレクトロニクス株式会社 | デジタルコンテンツ受信装置、デジタルコンテンツ受信方法、およびデジタルコンテンツ送受信方法 |
JP4629789B2 (ja) * | 2009-12-21 | 2011-02-09 | 日立コンシューマエレクトロニクス株式会社 | デジタルコンテンツ受信装置、デジタルコンテンツ受信方法、およびデジタルコンテンツ送受信方法 |
JP4629791B2 (ja) * | 2009-12-21 | 2011-02-09 | 日立コンシューマエレクトロニクス株式会社 | デジタルコンテンツ受信装置、デジタルコンテンツ受信方法、およびデジタルコンテンツ送受信方法 |
JP4565049B2 (ja) * | 2009-12-21 | 2010-10-20 | 日立コンシューマエレクトロニクス株式会社 | デジタルコンテンツ受信装置、デジタルコンテンツ受信方法、およびデジタルコンテンツ送受信方法 |
JP4996762B1 (ja) | 2011-08-31 | 2012-08-08 | 株式会社東芝 | 電子機器およびコンテンツ転送方法 |
JP5896221B2 (ja) * | 2012-03-16 | 2016-03-30 | ソニー株式会社 | 情報処理方法、情報処理装置、および情報処理システム |
US11496810B2 (en) * | 2015-01-07 | 2022-11-08 | Saturn Licensing Llc | Receiver, reception method, transmitter, and transmission method |
CN111711852B (zh) * | 2015-07-24 | 2022-09-23 | 麦克赛尔株式会社 | 接收装置 |
JP6767177B2 (ja) * | 2016-06-15 | 2020-10-14 | マクセル株式会社 | 放送受信装置およびコンテンツ保護処理方法 |
JP6560643B2 (ja) * | 2016-06-20 | 2019-08-14 | マクセル株式会社 | 放送受信装置およびコンテンツ保護処理方法 |
US10715868B2 (en) | 2016-06-07 | 2020-07-14 | Maxell, Ltd. | Broadcast receiving apparatus |
JP6560160B2 (ja) * | 2016-06-17 | 2019-08-14 | マクセル株式会社 | 放送受信装置 |
US10349196B2 (en) | 2016-10-03 | 2019-07-09 | Nokia Technologies Oy | Method of editing audio signals using separated objects and associated apparatus |
JP6826228B2 (ja) * | 2020-09-17 | 2021-02-03 | マクセル株式会社 | 放送受信装置およびコンテンツ保護処理方法 |
JP6828213B2 (ja) * | 2020-09-17 | 2021-02-10 | マクセル株式会社 | コンテンツ保護処理方法 |
JP6826229B2 (ja) * | 2020-09-17 | 2021-02-03 | マクセル株式会社 | 放送受信装置およびコンテンツ保護処理方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002203070A (ja) * | 2000-10-17 | 2002-07-19 | Hitachi Ltd | メタデータ配信方法 |
JP2002344924A (ja) * | 2001-05-22 | 2002-11-29 | Nippon Telegr & Teleph Corp <Ntt> | コンテンツ配信方法及びその装置 |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9286294B2 (en) * | 1992-12-09 | 2016-03-15 | Comcast Ip Holdings I, Llc | Video and digital multimedia aggregator content suggestion engine |
US6769128B1 (en) * | 1995-06-07 | 2004-07-27 | United Video Properties, Inc. | Electronic television program guide schedule system and method with data feed access |
KR0166923B1 (ko) | 1995-09-18 | 1999-03-20 | 구자홍 | 디지탈 방송 시스템의 불법 시청 및 복사 방지방법 및 장치 |
JPH1093914A (ja) * | 1996-09-18 | 1998-04-10 | Sony Corp | データ伝送方法、データ送信装置、データ受信装置のパラメータ設定方法、データ受信装置、データ伝送システム、再生方法、及び再生装置 |
JPH113559A (ja) | 1997-06-11 | 1999-01-06 | Hitachi Ltd | ビデオデータ記録再生装置 |
JP3853494B2 (ja) | 1997-11-28 | 2006-12-06 | 株式会社東芝 | デジタル放送受信装置 |
JP4069339B2 (ja) | 1998-10-16 | 2008-04-02 | ソニー株式会社 | 信号変換装置および信号変換方法 |
US6343319B1 (en) * | 1999-04-06 | 2002-01-29 | Daniel Abensour | Method and system for curriculum delivery |
JP4099741B2 (ja) * | 1999-06-18 | 2008-06-11 | ソニー株式会社 | データ通信装置および方法、並びに記録媒体 |
JP3405345B2 (ja) | 1999-11-26 | 2003-05-12 | 日本ビクター株式会社 | 再生方法 |
JP3474510B2 (ja) | 2000-02-29 | 2003-12-08 | 株式会社東芝 | ディジタル放送送信装置、その受信方法および受信装置 |
JP3775168B2 (ja) | 2000-04-20 | 2006-05-17 | 株式会社日立製作所 | 送信装置及び受信装置 |
JP4240766B2 (ja) | 2000-06-26 | 2009-03-18 | パナソニック株式会社 | データ蓄積方法およびそれを実現した受信装置および放送システム |
JP2002084523A (ja) | 2000-07-06 | 2002-03-22 | Hitachi Ltd | 受信方法 |
JP2002101086A (ja) | 2000-07-18 | 2002-04-05 | Hitachi Ltd | 受信方法 |
JP2002111613A (ja) | 2000-09-29 | 2002-04-12 | Toshiba Corp | 放送受信装置 |
WO2002037843A1 (fr) | 2000-10-27 | 2002-05-10 | Hitachi, Ltd. | Recepteur de donnees et procede de reception de donnees |
JP2002251328A (ja) | 2000-11-02 | 2002-09-06 | Hitachi Ltd | コンテンツ蓄積管理方法 |
JP2002262269A (ja) | 2000-11-16 | 2002-09-13 | Matsushita Electric Ind Co Ltd | コンテンツの伝送装置、再生装置及び視聴料金決定システム |
JP4457502B2 (ja) | 2001-02-13 | 2010-04-28 | ソニー株式会社 | デジタル放送利用制限方法、デジタル放送システム、センター局装置、ローカル局装置、および、受信装置 |
JP4474062B2 (ja) | 2001-02-28 | 2010-06-02 | 日立コンシューマエレクトロニクス株式会社 | 映像情報受信装置、映像情報受信方法及び映像情報送受信方法 |
JP4203940B2 (ja) | 2001-03-07 | 2009-01-07 | パナソニック株式会社 | 蓄積型受信装置 |
JP2002351312A (ja) | 2001-03-23 | 2002-12-06 | Victor Co Of Japan Ltd | 復号化方法 |
US7065213B2 (en) * | 2001-06-29 | 2006-06-20 | Scientific-Atlanta, Inc. | In a subscriber network receiving digital packets and transmitting digital packets below a predetermined maximum bit rate |
US20030088768A1 (en) * | 2001-11-02 | 2003-05-08 | International Business Machines Corporation | Transmitting a broadcast via the internet within a limited distribution base of listeners |
US7218738B2 (en) * | 2002-01-02 | 2007-05-15 | Sony Corporation | Encryption and content control in a digital broadcast system |
US7305357B2 (en) * | 2002-01-24 | 2007-12-04 | Shaw Cablesystems, G.P. | Method and system for providing and controlling delivery of content on-demand over a cable television network and a data network |
US7548984B2 (en) * | 2002-05-27 | 2009-06-16 | Panasonic Corporation | Stream distribution system, stream server device, cache server device, stream record/playback device, related methods and computer programs |
-
2003
- 2003-05-09 JP JP2003132260A patent/JP2004336576A/ja active Pending
-
2004
- 2004-04-19 CN CN2004800005461A patent/CN1698376B/zh not_active Expired - Fee Related
- 2004-04-19 US US10/520,684 patent/US7904928B2/en not_active Expired - Fee Related
- 2004-04-19 WO PCT/JP2004/005560 patent/WO2004100547A1/ja active Application Filing
- 2004-04-19 KR KR1020057000259A patent/KR20060009225A/ko not_active Application Discontinuation
- 2004-04-19 EP EP04728237A patent/EP1517558A4/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002203070A (ja) * | 2000-10-17 | 2002-07-19 | Hitachi Ltd | メタデータ配信方法 |
JP2002344924A (ja) * | 2001-05-22 | 2002-11-29 | Nippon Telegr & Teleph Corp <Ntt> | コンテンツ配信方法及びその装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1517558A4 * |
Also Published As
Publication number | Publication date |
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KR20060009225A (ko) | 2006-01-31 |
EP1517558A4 (en) | 2007-05-16 |
CN1698376A (zh) | 2005-11-16 |
CN1698376B (zh) | 2011-01-26 |
US20050268323A1 (en) | 2005-12-01 |
JP2004336576A (ja) | 2004-11-25 |
US7904928B2 (en) | 2011-03-08 |
EP1517558A1 (en) | 2005-03-23 |
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