CN100380968C - Apparatus and method for decoding digital image and audio signals - Google Patents

Apparatus and method for decoding digital image and audio signals Download PDF

Info

Publication number
CN100380968C
CN100380968C CNB008188017A CN00818801A CN100380968C CN 100380968 C CN100380968 C CN 100380968C CN B008188017 A CNB008188017 A CN B008188017A CN 00818801 A CN00818801 A CN 00818801A CN 100380968 C CN100380968 C CN 100380968C
Authority
CN
China
Prior art keywords
image
audio
program
signal
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB008188017A
Other languages
Chinese (zh)
Other versions
CN1433637A (en
Inventor
S·A·莫利
J·弗斯
J·拉策尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
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
Priority claimed from US09/563,880 external-priority patent/US20020056081A1/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of CN1433637A publication Critical patent/CN1433637A/en
Application granted granted Critical
Publication of CN100380968C publication Critical patent/CN100380968C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • 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
    • H04N21/21—Server components or server architectures
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41415—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance involving a public display, viewable by several users in a public space outside their home, e.g. movie theatre, information kiosk
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42646—Internal components of the client ; Characteristics thereof for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/165—Centralised control of user terminal ; Registering at central
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/032—Electronic editing of digitised analogue information signals, e.g. audio or video signals on tapes
    • 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
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/806—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components with processing of the sound signal
    • H04N9/8063—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components with processing of the sound signal using time division multiplex of the PCM audio and PCM video signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (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)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

An apparatus and method for decoding of encoded signals representing at least image information from a storage medium is claimed. A storage device (136) is configured to receive the storage medium. A decoder (144) is configured to receive the compressed encrypted encoded signals from the storage medium, and send the signals to a decryptor (320/324). The decryptor (320/324) is configured to decrypt the compressed encrypted encoded signals, and send the signals to a decompressor (320/324). The decompressor (320/324) is configured to receive the compressed encoded signals from the decryptor and to decompress the compressed encoded signals to enable display of the image.

Description

The apparatus and method for of decoding digital image and audio signal
Background of invention
I. invention field
The present invention is relevant with coded digital and AV.More particularly, the present invention is relevant with the apparatus and method for of decoding digital image in digital movie system and audio-frequency information.Invention further with from central apparatus to a plurality of displaying projectors or display system coding, compression, storage, deciphering, the decompression of electronic audio frequency/video frequency program contract, deciphering is relevant with controls playing.
II. description of Related Art
In decades, film industry has relied on the duplicating of celluloid film, distribution with projection the program material of original creation to be delivered to different movie theatre on the whole nation and the region, the whole world.Largely, the method for the distribution of motion picture data is keeping relative constant with mechanism.
The process that present film duplicates and issues has been described in Fig. 1.Film duplicates and is usually begun by the speciality photographic negative.At motion picture studio 50, move edit device 52 produces main film prints after the process that produces initial film takes place.From this main film prints, film reproduction element 54 just produces the thing that is called the distribution film, has just produced release version in batches (being called " positive ") from it.Size or film distributor expectation copy number according to distribution can have more intermediate steps or produce multiple copy in each stage.As 56 illustrations of movie theatre, with other physical means the film positive is distributed to different movie theatres by the courier.At movie theatre 56, by image being play film from the mode that film reflexes on the display screen surface with film projecting apparatus 58.In this traditional system, generally by audio editing system 51 produce the multiple track audio programs and with film image be printed on the film so that in the movie theatre optical projection system on movie theatre sound system 57 can with film synchronous playing sound channel.
Though the distribution process that shows at Fig. 1 can realize well that intrinsic restriction is still arranged.Since the use of film celluloid material and the restriction of film media bandwidth, restriction to some extent on the ability that high-fidelity multi-channel audio program is provided.Like this, on a large amount of film duplicates of making high cost is arranged, this will be the film cost hundreds of dollar of each feature length.Corresponding to physically the celluloid film of big tube being distributed on a large amount of and the movie theatre place that increases cost, complexity and delay are being arranged also.And the trend that increases in cinema industry is the development in so-called " polynary " movie theatre place, and a plurality of inside Movie Houses are positioned at together or are seated single movie theatre place.Each Movie House can be showed a film when other Movie Houses are showed a film in polynary combination.
Because a large amount of copies of making stop the stealing of bootlegging and data to become more and more difficult.Estimate that moviemaking is annual because revenue losses pirate and stealing has reached multi-million dollar.In addition, but because laying dust, wearing and tearing, thermal change and other master factors, the film data of duplicating can be degenerated gradually along with the time.At last, administrative expenses and other costs also will be included in the progressive broken ring of film data, and it can comprise the data of controlled danger.
Emerging technology just makes to present film distributor problem provides optional method to become possibility.For example, present usable satellite transmission method, though they now for the distribution of high quality audio/video (AV) data commercial be infeasible.Because the distribution of movie program is the specific type to the broadcasting of continent scope in essence, thus the satellite publishing method that intrinsic advantage arranged to the broadcasting of wide region like this for film distributor as being suitable substantially.Yet for the AV signal of real-time Transmission high-quality, the data rate (in bit per second) that needs is on the magnitude of 1,500,000,000 bits per seconds.This high data rate needs capacity to be equivalent to whole satellite to transmit an independent program, and this is very expensive.In addition, optionally the technology of issuing can't provide picture quality and the projection brightness that reaches with celluloid film.The technology of competition is usually included in different magnetic or the light media record audio/video (AV) signal to be presented on video-frequency monitor, TV or the projector equipment.These technology are not because the restriction of bandwidth can provide the quality of film.
Except the ability of transmitting necessary information via satellite, the information of reception must show with high-quality projecting apparatus, this former can't obtaining.In addition, satellite-based transmission and receiver system be expensive, and be the basic change from existing film distributor and display packing.Can feel so basic variation can not be from beginning just commercial be acceptable.
On progress in digital technology is also produced revolutionary distribution theory, program material will be stored with digitized form electronicly thus, rather than in the ray film media.Digitized image can be distributed in different magnetizing mediums, or compact disk, or transmits by wired, optical fiber, wireless or satellite communication system.Multiple DVD-ROM storage format is arranged, capacity range for storage from about 4.5GB to about 18GB.DVD-ROM storage format greater than about 9GB memory capacity realizes on double sided disk.In fact strict, the DVD-ROM disk of the high storage capacity that must manually overturn visits the stored information from second of disk.
The image magnetic track is that average film of two hours of the average image compression bit rate of about 40Mbps audio frequency and about eight Mbps of control information need be near the memory space of 45GB.Like this, even realized high storage capacity DVD-ROM disk, two hours film also needs to use a plurality of DVD-ROM disks for enough capacity.
Further for broadcast, average two hours DVD-ROM film need be with about per second 6 Mbytes or about 48Mbps output information.Though some existing DVD-ROM devices declare it is the transmission rate of 8MB per second, the q﹠r of this sampling device also is unknown.Like this, do not guarantee that DVD-ROM device so can keep the transmission rate of 6MB per second reliably.
In order to reduce the data rate needs of high quality electronic images storage, just developed compression algorithm.A digital motion picture compress technique that great compression can be provided when keeping quality of image signals has been used the self adaptation size block and the sub-piece of encoded discrete (DCT) coefficient data.This is called the method for self adaptation block size discrete cosine transform (ABSDCT) below technology.Select the adaptive block size to utilize the redundancy that exists because of the information in the frame image data.In the patent No. is 5021891 to be entitled as in " adaptive block sized images compression method and system " United States Patent (USP) and to have disclosed this technology, and it has transferred assignee of the present invention, and is for reference in this citation.The DCT technology is 5107345 to be entitled as in the United States Patent (USP) of " adaptive block sized images compression method and system " in the patent No. also, and it has transferred assignee of the present invention, and is for reference in this citation.In addition, it is 5452104 that the ABSDCT technology is applied in the patent No. with combining of difference quadtree conversion technology, be entitled as in the United States Patent (USP) of " adaptive block sized images compression method and system " argumentation is arranged, it has also transferred assignee of the present invention, draws for reference at this.The system that discloses in these patents has used intraframe coding, and each frame of image sequence all passes through coding and need not comprehend the content of any other frame.
Using the distribution of the film information of digital and electronic form to increase fast and low-cost really duplicates and does not have potentiality that quality descends.Yet,, also have the encryption technology of guaranteeing that information is encoded in the mode that stops useful information to be sent to unauthorized side with " leicht fallen D/A that duplicates " corresponding to digital technology.
Such as the technology of ABSDCT compress technique, senior projector equipment and Electronic Coding method provide the possibility of " digital movie " system.In general, digital movie is exactly to relate to electronic distribution and the demonstration that has converted the high-quality movie program that digital and electronic represents for the purpose of storing, transmitting and show to.Digital movie system can overcome the restriction of many existing film distributor processes.Digital system can not be subjected to the expired quality decline that celluloid film stands.Further, digital system has been eliminated the stealing and the illicit copy of celluloid film in fact, and the possibility of implementing safety measure in digital system itself further is provided.Yet moviemaking and association area are not also developed complete digital movie system.
Main Points and problem also will solve.The improved form that new digital movie system needs protection is to stop the movie theatre stealing.There is the movie theatre association of a plurality of Movie Houses to become bigger, the repayment of the economy of making great efforts to provide bigger, the place that has caused more complicated broadcast schedule and more projection one certain movie.This may need many additional electronic copys submit to movie theatre with prior art with corresponding complexity be operable to original broadcast.
The distribution channel is still duplicated by old celluloid film discussed above with mechanism and the distribution technology is determined.The digital movie that needs new technology to make full use of proposal is handled, to reduce copy when schedule that increase is provided with qualified cost and the distribution flexibility, faster issue and upgrading products in distribution to market are provided.Simultaneously, some cineastes, operating room and movie theatre manager want to increase the centralized control to issue and distribution, and can be extended to the market of renewal.For example, it is desirable to provide film and other to have the audio-video of optional sound channel to perform in a radio or TV programme the spectators market of dealing with more and more multilingual or optional language in the mode of more saving cost.
Needed is apparatus and method for comprehensive of the management of a certain technology and coding, encryption, storage and digital picture and audio program.These targets realize in the following manner by the present invention.
Summary of the invention
The present invention is a kind of apparatus and method for, handles on storage medium with compression and encrypted form presentation video therein and is transferred to the demonstration of code signal there with the startup image, and equipment comprises the memory device that is configured to receive storage medium; And the decoder that from storage medium, receives the compress-encrypt code signal of configuration.Decoder further comprise the decipher that is configured to compress-encrypt code signal deciphering and be configured to from decipher, receive the compressed encoding signal and decompression compressed encoding signal to enable the carrying out decompressor that image shows, decompressor uses reverse self adaptation block size discrete cosine transform compress technique.Method of the present invention is to handle on storage medium with compression and encrypted form presentation video and be transferred to the method for code signal there with the demonstration of startup image, the step that method comprises has from storage medium retrieval compress-encrypt code signal, the deciphering of compress-encrypt code signal show to start image to produce compressed encoding signal and decompression compressed encoding signal, decompression manipulate reverse self adaptation block size discrete cosine transform compress technique.
Therefore, this equipment and method have been stipulated decoding, deciphering and the decompression of image and/or audio-frequency information, generally are the forms with program material.At central apparatus or hub, program material is digitized compression, encrypt and storage is thought and data is issued to one or more Movie Houses or movie theatre place to carry out the large-screen projection of program ready.Program material generally comprises the audio program of film image, time synchronized and/or other relevant information, such as for amblyopia spectators' visual prompts magnetic track, captions, advertisement or multimedia time prompting channel for foreign language and/or power spectators hard of hearing.Program material can be (as movie trailer or commercial advertisement) or the rest image (as advertisement and propaganda) of (as the film of story leaf length), short time for a long time.Audio frequency and other related-programs do not need to store with the image information time synchronized or with image information, such as the situation of background audio program and advertisement.
In central hub, for programme information is handled in distribution.Can use the source generator that is positioned at central hub or selectivity position to produce electronic audio frequency and the picture signal of importing from analog or digital.Source generator can comprise television film scanner that produces electronic image signal and the audio frequency reader that produces electronic audio signal.Selectively, electronic signal can directly provide from electronic camera or other electron source, such as computer based image generation systems.
Electronic image and audio signal are handled by compressor reducer/encryption equipment then.In addition, compressor reducer/encryption equipment can be positioned in central hub or the equipment identical with source generator, for example makes the film studio.Can use known dynamic compression technology memory image and audio-frequency information on storage medium.Can use compress technique such as the ABSDCT method of in 5452104,5107345 and 50289, describing.Storage medium can be any high power capacity electronics tape, magnetic or light storage device, such as CD, DVD or hard disk or network attached storage.In addition, some information can be changed on wired, optical fiber, the wireless or satellite communication system and transmit.Can and be stored on the like device in order to last method or standard digital audio frequency compression algorithm compressing audio signal.
The use of power transformation sub-key value and/or digital control word sequence when encryption technology comprises, it provides to authorizing receiver and projecting apparatus.In addition, can be added to digital signature and " watermark " in image and/or the audio signal.Watermark is ND for General Visitors, but can be used to play the source of discerning the program unauthorised copies when analyzing at non real-time or frozen frozen mass.At the decryption information of the independent decipher unit generation of using secret algorithm private key and the security information that sends to movie theatre to decrypted image and/or audio-frequency information necessity.General pattern and audio signal are separately to encrypt.By image and audio-frequency unit are regarded as program separately, different audio programs can combine with image programs with a variety of causes, such as different language.
Compression and coded signal also are stored on the storage medium or provide from central hub and transmit.If transmission, the modulation/transmission technology can add that forward error correction information and modulated data stream are used for transmission so.Transmission can be on any wired or wireless communication, such as overland cable, and optical cable, satellite, internet or additive method.
Central hub further comprises network management.Network management can comprise that processor controls is used for managing the total operation in encoder and movie theatre subsystem, comprises control, broadcast/demonstration, fail safe and the comprehensive supervision/control and the Network Management Function of storage.Network management can be carried out work under Automatic Control, partial-automatic control or the human intervention of center or distribution.
Under the control of network management, programs stored data and additional control information also are transferred to the movie theatre subsystem.Network management also comprises the control method that the identity of the program that is transmitted is notified to the movie theatre subsystem.The selection storage of each movie theatre subsystem of the control method program that control is received also is provided in addition.
At the movie theatre subsystem, memory device receives storage medium from hub.Playing module reads information from storage medium, the wrong and request of monitoring stored information comprises the transmission again of any part information of mistake.The movie theatre subsystem such as movie theatre management, uses communication path (from the movie theatre subsystem to central hub) request transmission again.Communication path can use telephone network, satellite channel, internet or any communication means.
Under the control of movie theatre management, the local centralized stores that the memory device in the movie theatre subsystem can the prescribed program data.Memory device can comprise storage medium such as the DVD CD, removable hard disk or hard disk sequence (JBOD) module.Memory device can be stored several programs a time.Memory device can pass through Local Area Network (electronics or light) connection, and it connects by this way: any program can be play on the projecting apparatus of any mandate and show.Same program also can be play on two or more projecting apparatus simultaneously.Program material from memory device by use Different L AN structure Local Area Network send to the Movie House of appointment.For this purpose of description, suppose to have used LAN in conjunction with the central site network switching fabric.Yet the lan topology of other kinds subsystem hereto also is fine.
After playing module sorted to program material, decoder just decompressed and deciphering or decoding program material.Decompression and decipherment algorithm are according to compression and the encryption technology used in central hub.Show the information of decompression/deciphering with the projecting apparatus in the Movie House, and present audio signal with the electronic audio subsystem.
All aspects of the general control of movie theatre management projection operation comprise program receiving storage, the decompression of programme signal and the demonstration of deciphering and program material.The movie theatre management also can be controlled time and/or the quantity that allows each playing programs.Can be selectively, the control of procedure for displaying can be positioned at local projecting apparatus, far distance controlled unit or under central hub or the control of other concentration members.In addition, the movie theatre management can be configured to comprehensive projection operation and the operation of other movie theatres, such as ticket checking, ticketing, propaganda, sign, environment control, light, sound system operation or the like.Each movie theatre subsystem can comprise that also a plurality of Movie House modules of sharing identical storage and controlled function are used for flexibly and save the option of performing in a radio or TV programme of cost.
The use of digital encryption provides fixing safety measure.The technology of accessing to your password provides encrypted data transmission end to end.That is to say, decipher them at source generator encrypted image and/or audio-frequency information and during the movie theatre subsystem is play.Except the electronic security(ELSEC) measure, physical security measures can provide the supplementary protection of program material.
Physical security measures prevents before the projection of movie theatre subsystem projecting apparatus " being used a hidden recorder " for protection decompression/decrypted signal.In one embodiment, the decryption/decompression function is placed in the safe independently chassis, and the chassis physically is placed in or puts into projecting apparatus in the following manner: generally not having granted access is that immovable and this mode has physically stoped seeking decrypted signal.In addition, the invasion that enters security context or chassis can cause deletion or wipe cryptographic key information and in addition the numerical data that provides at any projecting apparatus port of deletion or change duplicate preventing.
Therefore, it is for the numeral and decoding, decompression and the deciphering of audio-frequency information that apparatus and method for is provided, and also is in order to monitor and control the management function of such equipment.
The accompanying drawing summary
When invention and the feature that wherein relates to all combine with the figure of corresponding identification all the time, the feature of the present invention, object and advantage will become obviously from detailed description proposed below, wherein:
Figure is the calcspar of traditional film publishing system;
Fig. 2 is the high level block diagram of embodiment of the digital cinema devices of the present invention;
Fig. 3 is based on the calcspar of the source generator of film;
Fig. 4 is the calcspar of compressor reducer/encryption equipment;
Fig. 5 is the calcspar of network management;
Fig. 6 is the calcspar of explanation hub internal network and central hub redundancy;
Fig. 7 A-E is the calcspar of memory device;
Fig. 8 is to use the calcspar of the memory device of a plurality of continuous magnetic disc players and playback player;
Fig. 9 is to use the calcspar of the memory device of a plurality of parallel disk players and playback player;
Figure 0 is to use the calcspar of the memory device of disk cartridge and playback player;
Figure 11 be to use removable hard disk as memory device the calcspar of movie theatre subsystem;
Figure 12 is the calcspar of movie theatre management; And
Figure 13 is to use the calcspar of JBOD module as the movie theatre subsystem of memory device.
Preferred embodiment is described in detail
The present invention comprises apparatus and method for, is called " digital movie " sometimes here, is electronics decoding, decompression and deciphering for audio/video, such as the film in cinema system, movie theatre, movie theatre association and/or performance system.
Digital movie combines the innovation in image and audio compression, shadow casting technique, encryption method and many other fields.The design digital movie replace celluloid film physics now be issued to each play and the projection place such as the method for movie theatre or remote Movie House.Digital movie has been broken away from the needs that celluloid film duplicates and is provided special audio/video quality and the potentiality of the measure of fixing safety.Program can be transferred to movie theatre and be stored on the memory device, such as removable hard disk (RHD) or digital versatile disk [Sony] (DVD), with projection afterwards.
When invention be applied in the same manner image and audio-frequency information to different projections place such as the performance in outdoor arena, drive-in movie theatre association, city's Movie House, school, special dining room etc. in the time, the movie theatre of example or movie theatre association are for discussed below clear.Those skilled in the art will readily appreciate that how the present invention is applied to the place of other kinds.
Fig. 2 has illustrated digital cinema devices 100 of the present invention.Digital cinema devices 100 comprises two main systems: at least one central apparatus or hub 102 and at least one performance or movie theatre subsystem 104.Hub 102 and movie theatre subsystem 104 are similar with the design of the U.S. Patent Application Serial 09/075152 of delivering 8 days Mays in 1998 co-pending, and the same assignee that it has transferred the present invention quotes for reference at this.
In one embodiment, image and voice data are compressed and are stored on the storage medium, and be distributed to movie theatre subsystem 104 from hub 102, usually, be that a movie theatre subsystem is used in each movie theatre or projection place in the network in the projection place of acceptance pattern picture and audio-frequency information, and this system comprises some central apparatus, the particular device that also has each performance Movie House to use.
In central hub 102, source generator 108 receives the film data and produces the digital version of film.At compressor reducer/encryption equipment (CE) 112 compression and encrypted digital informations, and they are stored on the storage medium by hub memory device 116.Network management 120 is monitored and is sent control information to source generator 108, CE112 and hub memory device 116.Conditional access management 124 provides special electronic key information so that have only specific movie theatre just to be authorized to show specific program.
In movie theatre subsystem 104, movie theatre management 128 control movie theatre management 132.According to the control informations that receive from movie theatre management 132,136 transmission of movie theatre memory device are stored in compressed information on the storage medium to playing module 140.Playing module 140 receives compressed information from movie theatre memory device 126, and prepares to give predetermined sequence, size and data rate with compressed information.Playing module 140 outputs to decoder 144 to compressed information.Decoder 144 is imported compressed informations from playing module 140, and is decrypted, decompresses and format, and output information is to projecting apparatus 148 and speaker module 152.Projecting apparatus 148 broadcast information on projector, and speaker module 152 back sound information on sound system, the both is under the control of movie theatre management 132.
In operation, source generator 108 provides digital and electronic image and/or program to system.Usually, source generator 108 receives the film data and produces the tape that comprises digital information or data.With the digitlization version of very high resolution digital ground scanning film with generation film or other programs.Usually, " telecine " process produces image information when well-known digital audio conversion process produces the audio-frequency unit of program.The image of handling does not need to provide from film, but can be independent picture or frozen frozen mass types of image, or series of frames or picture, comprises that those are as the motion picture projection of variation length.These images can be used as a series of or one group represent, be called the product of image programs with generation.In addition, can also provide other data such as for amblyopia spectators' visual prompts channel, for foreign language and/or power spectators' hard of hearing captions or multimedia time prompting channel.Similarly, independent or several groups of sound equipments or recording are used to form the audio program of expectation.
Can be selectively, high definition digital camera or other digital picture generation equipment or method as can be known can provide digital image information.The use that directly produces the digital camera of digital image information is useful especially for catching with the live event of issue fully fast or simultaneously.Computer workstation or like device also can be used to the graph image that direct generation will be issued.
Digital image information or program are sent to compressor reducer/encryption equipment 112, and it is to utilize preliminary election form and process compression digital signal as can be known, have reduced for the amount of digital information that produces original image necessity again with high-quality very.In a preferred embodiment, use ABSDCT technique compresses image source.In the U.S. Patent number of mentioning 5021891,5107345 and 5452104 the ABSDCT compress technique has been proposed in the above.Audio-frequency information also can be used the standard technique digital compression, and can with the compressed image information time synchronized.Then with the one or more safe electronic methods encryptions and/or the image and the audio-frequency information of encoding compression.
The state of compressor reducer/encryption equipments 112 is monitored in network management 120, and compressed information is directed to hub memory device 116 from compressor reducer/encryption equipment 112.Hub memory device 116 is formed (shown in Fig. 8) by one or more storage mediums.Storage medium can be the high capacity data memory device of any kind of, such as digital versatile disk [Sony] (DVD) or removable hard disk (RHD) and further as described herein.In case compressed information store into storage medium on, storage medium physically is sent to movie theatre subsystem 104, and is sent to movie theatre memory device 136 especially.
In optional embodiment, compressed image and audio-frequency information are all stored in mutual independence mode not contiguous or that separate.That is to say, provide the corresponding still time of a kind of compression and storage and image information or program to go up the device of the audio program of isolating.When use the present invention while processing audio image, just there is not this to need.Predetermined identifier or recognition mechanism or scheme are used to interosculate in due course corresponding audio frequency and image programs.This has allowed when needed being connected of image programs of one or more preliminary elections ground audio program and at least one preliminary election in performance or between stanza.That is to say,, when program show, connect and synchronous compressed audio even when initial when asynchronous with compressed image information.
Further, keep audio program and image programs separately to consider the multilingual from the audio program to the image programs, need not to reset image programs for every kind of language.In addition, keep audio program separately to consider the support of multi-loudspeaker configuration, need not to have interweaved a plurality of audio track with image programs.
Except image programs and audio program, independently propagate program or promote program and can be added into system.Usually, propaganda materials change on bigger frequency than positive program.The use permission propaganda materials of independent distribution program need not new positive image programs and just can upgrade.Promote program and comprise information such as advertisement of in movie theatre, showing (lantern slide, audio frequency, puppet show or homologue) and trailer.Because such as the high memory space of DVD or RHD storage medium, can store the advertisement of thousands of or bar.High memory space has been considered customizations, can be target customer's projection in particular theater as specific lantern slide, advertisement or trailer just.
Though Fig. 2 illustrated the compressed information in memory device 116 and physically transmitted storage medium to movie theatre subsystem 104, also should be understood that compressed information or wherein part can be transferred to movie theatre memory device 136 with arbitrary wireless or wire transmission method.Transmission method comprises satellite transmits, well-known multicast communication, internet access node, special telephone line or point-to-point fiber optic network.
The embodiment of the processing block of central hub 102 is in Fig. 2-9 explanation and description here.Source generator 108 illustrates in Fig. 3.In Fig. 3, source generator 108 digitlization cine-oriented image sources 156 are such as 35 millimeters cinefilms and store digital form on tape.Source generator 108 comprises and receives film source 156 and 156 high definition (HD) " telecine " equipment or the processes 164 that produce digital pictures from the film source.Telecine process is well-known in moviemaking, and several commercial service that can provide or in the equipment any one all can be used to carry out this process.Yet, in preferred embodiment, known to the personage of this area, to such an extent as to use high definition television film process equipment recent and CINTEL or Philips BTS production to use.That use definite according to cost and well-known factor when the design service with specific selection equipment.Also can use optional resolution, comprise that needs reduce data rate and are used for satellite transmits according to target audience, available projector equipment and place.
If original film 156 is 35 millimeters sources of canonical form, on image, use the telecine process of per second 24 frames to carry out this process so.The output of the numeral of telecine process can be with the storage of high data rate magnetic tape recorder, or compression at once and/or encrypt and with low data rate magnetic tape recorder or other image storage system and media storage as can be known.
Because image is only handled in telecine, so the audio-frequency unit of output source is handled in image separately.If audio-source with analog form, provides it to arrive the audio frequency reader with digitlization so usually on tape 168.In one embodiment, the magnetic track of digital audio up to 12 combines with digital picture by Port Multiplier 176.Multiplexed signals and image programs are stored in together as on the storage medium of high-density digital video magnetic tape recorder 180 or on the similar high power capacity digital storage system.As mentioned above, selectively, audio program can with image programs separate storage and processing, but to comprise that time synchronization information is suitably to consider combining the time of agreeing with image programs at projection Movie House Play System.Can be stored in image programs, audio program to time synchronization information or independently control on the program.
Though be shown the part of central hub, will be appreciated that and to be positioned at the equipment different to source generator 108 with central hub 102.Other equipment will be suitable for producing digital signal from tape, magnetic or light source.Selectively, source generator 108 can include the digital camera that magnetic or light storage device are installed or directly produce the digital device that other images of digital source data generate (such as computer-generated image or special result).Source generator 108 also can comprise the digital system of rest image, such as photoscanner or be used for the image converter of 35 mm film or photo.Therefore, such as for the common or special film studio of special-effect or other equipment that participate in the image programs preparation and show, can produce the numerical data of expectation, and then it is transferred to hub 102 further to handle or to transmit.
The calcspar of compressor reducer/encryption equipment 112 has been described in Fig. 4.Similar to source generator 108, compressor reducer/encryption equipment system 112 can be the part of central hub 102 or be positioned in the autonomous device.For example compressor reducer/encryption equipment 112 can be placed in the movie or television production film studio together with source generator 108.In addition, can carry out with the variable bit rate process the compression process of image or audio-frequency information or data.
The numeral that is provided by source generator 108 is provided compressor reducer/encryption equipment 112.Digital picture and audio-frequency information are stored in frame buffer (not showing) lining before further handling.
Data image signal is delivered to image compressor 184.In preferred embodiment, image compressor 184 uses the ABSDCT technology of describing in above-mentioned U.S. Patent number 5021891,5107345 and 5452104 to come the processing digital images signal.
In the ABSDCT technology, color input signal generally is the YIQ pattern, and wherein Y is brightness or lightness component, and I and Q are colourity or color component.Also can utilize extended formatting such as YUV or rgb format.Because eyes are for the low spatial susceptibility of color, the ABSDCT technology is by factor sampling color (I and the Q) component of two in every direction horizontal and vertical.Therefore, come each space segment of presentation video input with four luminance components and two chromatic components.
Each brightness and chromatic component are passed to block interleaver.General one 16 * 16 (pixel) piece is sent to block interleaver, and it sorts the image sampling in each 16 * 16 or piece and the synthon piece organizing to produce data are analyzed to carry out discrete cosine transform (DCT).The DCT operator is a kind of with the method for time sample conversion of signals to the frequency representation of same signal.By being transformed into frequency representation, show that the DCT technology can relate to the compression of high level, because quantizer can be designed to utilize the frequency distribution characteristic of image.In a preferred embodiment, one 16 * 16 DCT is used for first rank, four 8 * 8 DCT are used for second rank, 16 4 * 4 DCT are used for the 3rd rank, 64 2 * 2 DCT are used for quadravalence.
The operation of DCT has reduced spatial redundancy intrinsic in the source video sequence.After carrying out DCT, most of vision signal energy all tend to concentrate in several DC coefficients.
Piece for 16 * 16 and each sub-piece, the coefficient of analyzing conversion is to determine encoding block or the required bit number of sub-piece.Selecting then needs the piece of least bits number encoder or the combination of sub-piece to come the representative image segment.For example, can select two 8 * 8 sub-piece, six 4 * 4 sub-piece and eight 2 * 2 piece come the representative image segment.
Suitably the piece of selecting or the combination of sub-piece are arranged according to the order of sequence then.Then the coefficient value of DCT just can reception further be handled such as frequency weighting, quantize and utilize the coding (such as variable length code) of known technology in prepare transmission, but is not limited only to these.Then compressing image signal is provided at least one image encryption device 188.
Generally digital audio and video signals is delivered to audio compressor 192.In preferred embodiment, audio compressor 192 uses standard digital audio frequency compression algorithm to handle multichannel voice frequency information.Compressing audio signal is provided at least one audio encryption device 196.Selectively, can be unpressed but still be to transmit and use audio-frequency information in the figure pattern.
Image encryption device 192 and audio encryption device 196 use the image and the audio signal of arbitrary encryption technology ciphered compressed as can be known respectively.Can use identical or different technology secrecy image and audio signal.In preferred embodiment, use the encryption technology of the real-time digital sequential coding that comprises image and audio program.
In image and audio encryption device 192 and 196, the scrambler/encryption equipment processing of circuit program material of power transformation sub-key information (per second changes several times usually) during by use.Storage or transfer encoding programme information then, in wireless connections aloft, this can not translate for any people who does not hold the associated electrical key that is used for coded program data or numerical data.
Encryption generally comprises the direct encryption of Serial No. coding or compressed signal.Speech " encryption " and " coding " are that exchange is used, and can be understood as the meaning and be to use arbitrary cryptographic technique to encode, cover or directly encrypt and use the numeric string of the described sequence that produces by secret digital value (" key ") to handle not any means of the digital data strings of homology, so that be difficult to recover original data sequence without the secret keys value.
Each image or audio program can use specific performance place or the special electronic key information of movie theatre passed through that the movie theatre or the electronic key information of authorizing the performance place of projection specific program to provide and encrypt are provided.Conditional access management 124 or CAM handle this function.The ciphered program cipher key delivery that before playing programs, the Movie House that is decrypted stored information is needed or deliver to the movie theatre of mandate in addition.It should be noted that potentially and authorizing the projection time to begin several days or transmitting programs stored information before a few week, and just before the mandate projection time begins, transmit or transmission encrypted image or audio program key.Also can use low data rate link maybe can take memory element and the device transmission ciphered program key that can wipe memory cell be arranged such as magnetic or light media disk, smart card or other.Also can provide the ciphered program key in the mode of time of such control mandate particular theater association or Movie House repertoire.
Each movie theatre subsystem 104 that receives the ciphered program key uses the specific key of its Movie House to decipher this value, and stores this deciphering program key in memory device or other safety memory bodies.
When will broadcast program, use the specific and program specific key information in movie theatre or place, be preferably with the equalization algorithm that in preparing coded signal, uses in the decipher 112, with real-time decoding/deciphering programme information now.
Return the past with reference to Fig. 4, except coding, image encryption device 192 image programs in the past adds " watermark ", and it substantially is digital usually.This is included in the specific and/or specific visual identification symbol of time in the place of inserting in the program sequence.That is to say that the projection place and time of authorizing is represented in the structure watermark, in case of necessity in order more effectively to follow the trail of the source of illicit copies.Watermark can be programmed for also that but frequent pseudorandom time occurs in playing process, and is sightless for spectators.Watermark can't be noted on consciousness between the stanza of decompressing image or audio-frequency information being preset as under the normal transmission rate.Yet, when image and audio-frequency information being different from normal speed, when showing with slower " non real-time " or frozen frozen mass playback rate, watermark is exactly perceptible.If found the unauthorized copy of program, authorized organization can read digital watermark information so, and the movie theatre that copy produces can be determined.Such digital watermark also can be applied to or be used for discerning audio program.
Compression or the image and the audio signal of encrypting all are sent to multiplexer 200.Play with the form that allows image and audio frequency string information to arrange with the time by multiplexed with time synchronization information at multiplexer 200 images and audio-frequency information at movie theatre subsystem 104.Form the program packetizer processing multiple signals of program string then by grouped data.By grouped data or formation " data block ", just can the monitor programme string during movie theatre subsystem 104 (Fig. 2) decompresses with the mistake during the reception piece during finding to decompress.Movie theatre management 128 requests of can sending by movie theatre subsystem 104 obtain the mistake that data block shows.Therefore, if wrong existence has only the program of fraction to be replaced so, rather than whole program.Can on wired or wireless link, handle the request of small data piece.This prepares for the reliability and the high efficiency that strengthen.
In an optional embodiment of the present invention, the image of program is counted as independent different program with audio-frequency unit.Like this, be not to use multiplexed image of multiplexer and audio signal, picture signal is divided into groups separately.In this embodiment, can remove audio program images program, vice versa.Strictly speaking, image and audio program are only assembled the program of merging at reproduction time.This has considered with the different audio programs of different reasons with the image programs combination, such as different language, provide renewal or program after the public publication to change, to be adapted in the local social standard or the like.To reduce cost in the program be of great use to the ability that the different multi-channel programs of this flexible allocation audio frequency are given image programs in order to change in the bigger multicultural market of issuing and be devoted to be used for now moviemaking.
Compressor reducer 184 and 192, encryption equipment 188 and 196, multiplexer 200 and program packetizer 204 can be passed through compression/encryption module (CEM) controller 208 and realize, and this is to be set at the software-controlled processor that realizes function described here.That is to say that they are configured to the hardware of unified function, comprise different programmable electronic equipments or the calculator of under software or firmware program control, working.They can utilize some other technologies, such as selectively realizing by ASIC or by one or more circuit cards are integrated.That is to say, be configured to specialised hardware.
Image and audio program string are sent to hub memory device 116.The CEM controller 208 main responsible whole compressor reducer/encryption equipments 112 of controlling and monitor.CEM controller 208 can be carried out required function or by using specialised hardware to realize by setting general-purpose purpose hardware device or calculator.As described here, provide network control to CEM controller 208 from network management 120 (Fig. 2) by the hub internal network.Digital interface and compressor reducer 184 and 192 that CEM controller 208 uses as can be known, encryption equipment 188 and 196, multiplexer 200 and burster 204 communicate, and control the work of these elements, and the transfer of data of memory module 116 and these equipment rooms also can be controlled and monitor to the CEM controller.
Memory device 116 the bests are constructed to one or more RHD, DVD CD or other high-capacity storage media, and it generally is to the movie theatre memory device 116 of movie theatre subsystem 104 (Fig. 2) similar design to be arranged.Yet, can be understood in some applications by the those of ordinary skill of technology and also can use other media.Memory device 116 receives compression and the image of encrypting, audio frequency and from the control data of program packetizer 204 at compression stage.Work by CEM controller 208 managing memory apparatus 116.
Referring now to Fig. 5, network management 120 has been described.Network management 120 control and management hubs 102, selectively the whole Digital Theater System 100 of control and management comprises the control and the monitoring of the parts of one or more cinema systems 104.Centralized control is so that the whole operation of network management 120 management systems comprises transmission, the control of broadcast/demonstration, safety and comprehensive Network Management Function.Selectively, can be implemented in wherein the distribution management system that processor in performance and the cinema system is controlled some movie theatre functions.
Network management 120 comprises at least one network management and handles device 212, and it is master controller or " brain " of digital movie system 100.General networking management 120 is based on standard platform work station or similar programmable data processing hardware.The scheduling and the secure context of device 212 management hubs 102 handled in network management.Under the control of network management, being updated in of control information or program is transferred to movie theatre subsystem 104 from hub 102 before the program projection time.Also control transmission or to the transmission rate of the program of movie theatre subsystem 104 of device 212 is handled in network management.According to the type of program and the design in transmission channel or path, transmission rate can be fixed or changed.For example, this can be according to the transmission rate for particular data link.The data rate of program material compressed encoding also can change for different programs, thereby provides the different quality level other compression.
Network management processing device 212 docks by other parts of hub internal network and hub, and the hub in-house network uses standard multidrop network architecture to realize usually.Yet, can use other network design and kinds as can be known to comprise link based on light.In preferred embodiment, as here discussing with reference to figure 6, the ethernet concentrator 216 of network management system 112 is supported the hub internal network.
Network management 120 also can comprise modulator-demodulator 220, it provides the interface of a movie theatre network on internet or the PSTN, and generally comprises one group of dial telephone modulator-demodulator, cable or satellite modem, ISDN or cellular link controller or other install as can be known.Modulator-demodulator 220 is handled device 212 with network management and is docked by the modem server function.Modulator-demodulator 220 is as the receiver of 102 back link communication path from the movie theatre to the central hub.For example, in the quality of the compression process of movie theatre illustrated in fig. 7 management 128 monitoring movie theatre subsystems 104 and provide quality report to network management system 120.Can use return path from the program data piece of central hub 102 loading error occurring again by the movie theatre request.In addition, can be by the extra projection of this linking request program or the variation or the renewal of program material.In optional embodiment, channel or another low data rate communications method or provide return path via satellite by internet.In this case, realize other docking facilities or equipment as can be known in the time of suitable, rather than modulator-demodulator 220.
Thereby user interface 224 allows the direct Control Network management of user 112 whole hub 102 and/or movie theatre subsystems 104.The user can monitor the state of hub 102 and indicate the timing of hub disparate modules.Further, user interface 224 has been considered the configuration of the different embodiment of memory device 116, comprises how the kind of storage medium of use and program are stored in the storage where on the storage medium and on storage medium.User interface 224 normally has the PC of monitor and keyboard interface.
Referring now to Fig. 6, the calcspar of hub internal network 228 has been described.Hub internal network 228 is communication trunks of central hub 102.Hub internal network 228 can be expanded to moving the ethernet local area network (LAN) of IP protocol groups by inside.Like this, the movie theatre management 128 of hub internal network 228 with regard to physically being connected to each other compressor reducer/encryption equipment 112, memory device 116, network management 120, conditional access management 124 and optionally arriving the movie theatre subsystem 104 of ether hub 232.Hub internal network 228 can comprise that also redundancy or backup part are to satisfy the availability requirement under the situation that major part lost efficacy.Just as the particular division of functionality that is suitable for this locality or remote function, also can provide external interface central hub 102 be connected with external computer networks or communication system (if desired).
As illustrated in fig. 2, movie theatre subsystem 104 is at least with one and general many movie theatres management structures 132 by movie theatre management 128 controls.For example, movie theatre in some commercial markets is configured to have at the three unities the movie theatre association of many Movie Houses, often is called cineplex.The compressed information of storage can be transferred to the one or more Movie House modules 132 in the movie theatre association.
Movie House module 132 comprises movie theatre memory device 136, playing module 140, decoder 144, and projecting apparatus 148 and speaker module 152.In operation, movie theatre memory device 136 contains the compressed information on storage medium.The different embodiment of memory device have been described in Fig. 7.Generally, storage medium is physically transmitted to movie theatre subsystem 104 from hub 102, although desired part information can be transferred to movie theatre subsystem 104 from hub 102.Storage medium can be one or more DVD CDs 236 (Fig. 7 A and 7C), one or more removable hard disk 240 (Fig. 7 B), the internal hard drive (IHD) 244 in playing module (Fig. 7 D), the JBOD module 248 (Fig. 8) that comprises many memory cells or their arbitrary group.
In using the embodiment of DVD, can use a plurality of DVD CDs 236 as storage medium.This embodiment has been described in Fig. 7 A.For picture channel have about 40Mbps the average image compression bit rate and need be for average two hours the film of audio frequency and about eight Mbps of control information near the memory space of 45GB.DVD-ROM file layout capacity range for storage of today from about 4.5GB to about 18GB.Greater than the about memory capacity of 9GB is double sided disk, and it must be reversed second of reading disk.Like this, even realized the DVD-ROM disk of high storage capacity, two hours film also need use a plurality of DVD-ROM disks for enough capacity.
As discussed previously, preferably image information is separated with audio-frequency information.This embodiment has been described in Fig. 7 C.Image programs 252 is stored in independently on the storage medium, and does not have audio program 256.Storage medium can be DVD CD or RHD.When use the present invention while processing audio program, just do not needed.Keep audio program and image programs separately to consider to make multilingual and image programs synchronous, need not to reset image programs for every kind of language from audio program.In addition, keep audio program separately to consider the support of multichannel configuration, need not to have interweaved a plurality of voice-grade channels with image programs.
Except image programs 252 and audio program 256, independently propagate program 260 or promote program and can be added into system.The use permission propaganda materials of independent distribution program 260 need not new positive image programs and just can upgrade.Promote the key information that program 260 can comprise advertisement, trailer, control and/or movie theatre subsystem 104.
Removable hard disk provides several advantages as the use of storage medium, such as the possibility of duplicating convenient and lower error rate.At Fig. 7 B this embodiment has been described.The stored information on the hard disk by in standard personal computer (PC) environment on the disk writing information and easily being replicated.Further, because the large storage capacity of removable hard disk, so removable hard disk still less is essential.The use of hard disk and other storage mediums have relatively reduced the possibility of operating mistake.Removable hard disk is just in case meet the integrality that rigorous environment also more may keep data, such as the rough processing of voyage period or be exposed to dust, dirt, noise or other foreign matters.
In another embodiment of Fig. 7 D explanation, internal hard drive (IHD) 244 and modulator-demodulator 264 except other storage mediums, have also been used.Considered to chain directly by modulator-demodulator 264 stored information on IHD244 information has been delivered to movie theatre at existing communication system such as telephone wire, ISDN, cable modem or DSL.For example the renewal for advertisement and trailer information can and be stored on the IHD244 by the telephone wire transmission.The slice, thin piece that upgrades can selectively directly be shown in movie theatre from IHD, rather than from propaganda program disk.The renewal of transmitting advertisement and trailer information by modulator-demodulator 264 links has caused huge cost savings, because avoided the publication and the issuing expenses of additional propaganda program disk.
Another function of IHD244 is that it is a data integrity system.IHD checked the information that is stored on the storage medium for data integrity before being delivered to playing module.The data integrity system is that every blocks of data is checked electronic mark.If any crc block has been failed in checking process, if or dropout of data block, playing module just uses the data block of modem links request repeat mistake so.Once request, the data block of storage request on IHD244.When playing module was play this program, playing module was just visited the data block of the playing request in due course of IHD244.For the relation of validity and data transfer rate, the few relatively data block of visit is the most useful.If the error checking system discovery has damaged the lot of data piece, the error message indicating device just allows the user judge whether these problem datas become the basis of the physical distribution of data disk.
It also is favourable that the use of IHD244 and modulator-demodulator 264 distributes for the cryptographic key data.Cryptographic key data and other control informations are by Data transmission or use modulator-demodulator 264 to be delivered to IHD244 from conditional access management 124 physically in the separate, stored media.Mode of operation, history and other information are sent to conditional access management 124 successively.Though can receive the information of all transmission from central hub 102 communicating control informations and movie theatre subsystem 104, movie theatre subsystem 104 is the program of the reception that needs of a demodulation and storage particular theater module 104 selectively.
If the capacity of IHD244 is enough or by using JBOD module 348, image programs, audio program and/or distribution program can upload to IHD from storage medium.The use of IHD244 allows playing module to support biplate and the scheduling of other Polymeras.Further, can be by program being uploaded to a plurality of playing modules are shown specific positive on a plurality of display screens so that play positive from the IHD244 of each playing module.
In the optional embodiment shown in Fig. 7 E, Local Area Network interface 268 has replaced the modem interface 264 that illustrates in Fig. 7 D.Except finishing the function about the above modem interface, LAN interface 268 can connect one or more playing modules and/or connect movie theatre management 128.User interface (do not have show) connected to advance LAN interface and/or movie theatre management 128 so that the user can remote control and monitoring function such as the mistake monitoring of scheduling, control and each playing module, decoder module or image and speaker module.Further, consideration can connect to advance LAN interface 268 to network management 120.LAN interface 268 has considered that also program transmits between playing module.
Fig. 8 has illustrated and has used a plurality of DVD CD 272a, 272b ... 272n is singly put DVD Disc player 276a, 276b as the embodiment of storage medium and one group ... 276n.This group is singly put DVD Disc player 276a, 276b ... 276n plays with predetermined sequence with serial mode, plays stored information on its disk separately.Stored information, offer buffer 284 by transducer 280 such as FIFO RAM buffer 284 illustrated in fig. 8.FIFO RAM buffer 284 be capacity sufficient arranged so that decoder 144 and projecting apparatus afterwards 148 do not have partial information overload or not enough.In preferred embodiment, as DVD CD 272a, 272b ... when 272n was read with serial mode, the use of FIFO RAM buffer 284 was with regard to particular importance.When reading the DVD CD, in the delay that when a disk is transformed into another, has several seconds with serial mode.
Then the data of storage are sent to decoder 144 by fibre channel interface.Transducer 280, buffer 284 and fibre channel interface are controlled by playing module CPU292.
This group is singly put DVD Disc player 276a, 276b ... 276n also can play with parallel schema, as shown in Figure 9.In parallel schema, a plurality of DVD Disc player 276a, 276b ... 276n plays the different piece of compressed information, and these parts of recombinating in playing module 140 afterwards.From DVD Disc player 276a, 276b ... these parts that 276n reads compressed information are delivered to parallel reading/go striped device 296, its sort fully these part of compressed information.In preferred embodiment, removing striped device 296 is playing module 140 addressable software modules.As shown in Figure 9, removing striped device 296 is software modules by the CPU292 of playing module 140 visit.Go the striped device 296 can be in CPU292.Go striped device 296 also the error detection function play to guarantee zero defect.If the compressed information part can comprise redundant information in case the part disk can't read or damage some compressed informations.In these cases, go striped device 296 just can produce the information of any damage again with redundant information.Standby message and sequence information are stored in independently on the DVD CD, and with disk 272a, the 272b of other compressed information ... 272n is read by parallel together.
In optional embodiment, can use the DVD optical disk cartridge to replace this group singly to put the DVD Disc player for Fig. 8 and any embodiment illustrated in fig. 9.As illustrated in fig. 10, DVD optical disk cartridge 300 is similar to CD optical disk cartridge as can be known in operation.Insert a plurality of disks at DVD optical disk cartridge 300.Software control in memory device 136, playing module 140 or CPU292 guarantee suitably to install disk and visit disk with suitable order.A plurality of disks are sent in the independent DVD player.Just be inserted into DVD player as 304 which the DVD CD of control of the converter apparatus among Fig. 8.In DVD optical disk cartridge embodiment, can carry out serial or parallel and play.
Figure 11 has illustrated the operation of using the Movie House module 132 of one or more removable hard disks (RHD) 308.For speed, capacity and reason easily, it is desirable to use RHD308 more than one.When continuous reading of data, some RHD have " looking ahead " feature, and it predicts ensuing reading order according to the history of order recently.The useful part of this feature of looking ahead is: the time that needs the reading disk continuous data in minimizing.Yet,, need the time of reading disk non-continuous data to increase so if RHD receives unforeseen order.In this case, the feature of looking ahead of RHD may cause the random access memory body of RHD to be full of, and so just needs the more time to visit information requested.Therefore, the RHD of surpassing being arranged is favourable for reading the continuous data string sooner as image programs.Further, second group of information of visit on independent RHD disk is such as outside audio program, movie trailer, control information or advertisement favourable: the such information of visit will spend the more time on RHD separately.
Like this, read compressed information from one or more RHD308 and send buffer 284 to.FIFO RAM buffer 284 in playing module 140 is from the speed receiving unit compressed information of memory device 136 to be scheduled to.FIFORAM buffer 284 be have capacity sufficient so that decoder 144 and projecting apparatus afterwards do not have information overload or deficiency.In preferred embodiment, FIFO RAM buffer 284 has about 100 to 200MB capacity.。Because in the delay that has several seconds when a disk is transformed into another, the use of FIF0RAM buffer 284 is with regard to particular importance.
Partly send network interface 288 to from FIFO RAM buffer output compressed information, it provides compressed information to decoder 144.In preferred embodiment, network interface 288 is fiber channel judgement loop (FC-AL) interfaces.
In the optional embodiment that does not specify, the switching network reception of being controlled by movie theatre management 128 passes to special decoder 144 from the dateout of playing module 140 and data.The use of switching network allows the program on any specific playing module 140 to be transferred to any special decoder 144.
When watching program, it is transferred to Movie House module 136 from memory device 136 retrieval programme informations and by movie theatre management 128.Decoder 144 uses the secret keys decrypts information that only offers the mandate movie theatre to receive the data of coming from memory device 136, and the reverse decompression algorithm decompression canned data of compression algorithm that uses and use in source generator 108.Decoder 144 also passes through electronic projection apparatus 148 display images to the decompressing image information translation to the standard video mode of being used by optical projection system (it can be an analog form, also can be digital form).The sound system 152 that also decompresses audio-frequency information and offer Movie House is to play with image programs.
Figure 11 has also illustrated the calcspar of decoder 144.Decoder 144 processing compression/ciphered programs make it visually be projected in display screen or go up on the surface and with sound system 152 projection of sound ground is arranged.Decoder 144 is by its controller 312 or by movie theatre management 128 controls, and comprises at least one and remove burster 316, controller or CPU312, buffer 314, image decipher/decompressor 320 and audio encryptor/decompressor 324.Buffer is for going burster 316 interim stored informations.All all are installed on the one or more circuit board components.Circuit board component can be installed in 148 assemblings or that the be close to independent case with projecting apparatus.In addition, the smart card 328 that can access to your password docks with controller 312 and/or image decipher/decompressor 320 for unit specific cryptographic keys transmission of Information and storage.
Go independent control, image and the audio packet of burster 316 identification with separating from playing module 140, CPU312 and/or movie theatre management 128.When image and audio packet are delivered to image and audio encryptor/ decompressor system 320 and 324 respectively, can transmitting control be grouped into movie theatre management 128.Read with write operation and will occur in the character group.Therefore, use big buffer 314 to make data directly flow to projector equipment reposefully from removing burster 316.
Movie theatre is managed 128 configurations, safety management, operation and monitoring movie theatre subsystem 104.This comprises external interface, image and audio frequency decryption/ decompression module 320 and 324, projecting apparatus together 148 and speaker module 152.Control information is from playing module 140, CPU312, movie theatre management system 128, remote control port or the local control input control panel as Movie House module 132 shells or base exterior.Decoder CPU312 also can manage the electronic key of distributing to each Movie House module 132.Distribute to the preliminary election electronic cipher key and collaborative use of electronic cipher key information of inserting in image and the voice data of Movie House module 132 with decrypted image before decompression process and audio-frequency information.In preferred embodiment, decoder CPU312 uses the standard microprocessor operation of the software that inserts each Movie House module 132 as basic function or control element.
In addition, decoder controller 312 preferably is configured to work or transmit the historical record of customizing messages with the performance that keeps occurring in each Movie House with movie theatre management 128.Information about this performance historical record can be used to use back link or is transferred to hub 102 by taking media at preselected time then.
Image decipher/decompressor 320 is obtained the view data string from removing burster 316, be decrypted and the original image of recombinating on display screen, to show.The output of this operation generally provides the standard analog rgb signal to digital cinema projector 148.Usually be decrypted in real time and decompress, considered the real-time broadcast of program material.
Being operable to that the image compressor 184 of image decipher/decompressor 320 and hub 102 and image encryption device 188 carry out deciphered and the decompressed image data string inversely.Each Movie House module 132 can be handled with showing from the different programs of other Movie House modules 132 in the identical movie theatre subsystem 104 or one or more Movie House module 132 and can handle simultaneously and show identical program.Selectively, can show same program on a plurality of projecting apparatus, a plurality of projecting apparatus postpone the time relative to each other.
Decrypting process specific the and program specific electron cryptographic key information in the unit that before provided is provided synergistically and is inserted the decrypted image information of the electronic key in the serial data.(decrypting process has been described with reference to Fig. 4 front.) authorize the cryptographic key information of necessity of the program of projection on each Movie House module 132 to offer each movie theatre subsystem 104 with all.
Use the specific projection system performance specific program of multistage cryptographic key management mandate.This multi-stage key management usually use be exclusively used in each authorize in movie theatre management 128, specific image and/or audio program and/or image and/or the audio program the time become the electronic key value of cryptographic key sequence." Movie House is specific, and " it is programmed into each Movie House module 132 for electronic key, 56 bits or longer normally.
Can use several transmission and show that the technology of the key information that uses realizes this programming.For example, back link discussed above can fetch use from the chain of the encrypted message of conditional access management 124 by transmission.Selectively, also can use smart card techniques such as smart card 328, pre-programmed flash card and other portable memory apparatus as can be known.
For example, can design smart card 328, just can not from the smart card memory body, read so that in a single day this value is written in the card.Use the safety measure prevention of physics and electronics to distort this key information and discover distorting or damaging of attempting.Key is stored by this way: it can be wiped free of under the situation of attempting to distort perceiving.Smart card circuitry comprises that containing cryptographic algorithm software carries out, normally the microcontroller core of data encryption standard (DES).Smart card can be imported the value that offers it, with the DES algorithm on the card and the Movie House private key encryption that prestores (or deciphering) these values and output result.Selectively, can use smart card 328 simply the encrypted electronic key information to be sent to circuit in will carrying out the movie theatre subsystem 104 that this key information handles as the use of image and audio frequency decrypting process.
The image programs serial data uses reverse ABSDCT algorithm or carries out dynamic image with symmetrical other image decompression compression process of the image compression of using and decompress in central hub compressor reducer/encryption equipment 112.If image compression is based on the ABSDCT algorithm, decompression process comprises variable length code, reverse frequency weighting, anti-phase difference quadtree conversion so, and IDCT and DCT piece combiner deinterleave.Decompressing the treatment element that uses can be being configured to realizing on the hardware especially specially of this function, such as ASIC or one or more circuit board component.Selectively, the decompression element can be used as standard component comprise the different digital signal processor or programmable electronic equipment or under special functional software or firmware program control the integrated hardware of the computer of operation realize.Can realize a plurality of ASIC processing image information and support the hi-vision data transfer rate.
Decompressed image data arrives projecting apparatus 148 through digital-to-analogue conversion and output analog signal.Selectively, use digital interface transmission decompression DID, avoid the needs of digital-to-analogue conversion process to projecting apparatus 148.
Audio encryptor/decompressor 324 is obtained the voice data string from removing burster 316, be decrypted and the original audio of recombinating in movie theatre loud speaker or audio reproducing system 152, to show.The output of this operation provides the standard circuit level audio signals to sound system 152.
The operation similar to image decipher/decompressor 320, that the audio compressor 192 of audio encryptor/decompressor 324 reverse hubs 102 and audio encryption device 196 carry out.Use electronic key and the electronic key that inserts in the serial data, decoder 324 decoded audio information synergistically from cryptographic smart cards 228.The voice data of deciphering then decompresses.
With carrying out audio decompression with the symmetrical algorithm that uses in central hub 102 audio compressions.A plurality of voice-grade channel (if there is) decompress.The quantity of voice-grade channel is according to the design of the multi-channel audio system of the particular presentation Room or display system.Can transmit additional voice-grade channel for such as multilingual audio track with for the purpose of amblyopia spectators' audio prompt from central hub 102 for improved audio program.System also can provide with the synchronous additional data channel of image programs for such as multimedia special efficacy channel, captions with for the purpose of power spectators' hard of hearing special visual prompts channel.
As discussed previously, audio frequency and data channel be with the image programs time synchronized maybe can need not direct time synchronized and asynchronous representing.Image programs can comprise single frame (rest image just), single frame rest image of a sequence or short time or long animated sequences of images.
If necessary, voice-grade channel offers the audio frequency delay element, and it inserts need be with the picture frame isochronous audio that is fit to the time and postpones.Each channel passes digital-to-analogue conversion then provides and is called " line level " and outputs to sound system 152.That is to say, from numerical data, produce the suitable analog level and the signal of form and drive suitable sound system.The output of line level audio frequency is used usually and is being standard x LR or the AES/EBU connector of seeing in the movie theatre sound system mostly.
The electronic representation of projecting apparatus 148 display program on display screen.High-quality projecting apparatus is based on advanced techniques, such as liquid crystal light valve pipe (LCLV) method of handling light or image information.Projecting apparatus 148 receives picture signal from image decipher/decompressor 320, normally with standard RGB (RGB) vision signal form.The message transmission of control and monitoring projecting apparatus provides on the digital serial interface of coming self-controller 312 usually.
Back with reference to Figure 11, the decoder chassis comprises fibre channel interface 288, removes burster 316, decoder controller or CPU312, image decipher/decompressor 320, audio encryptor/decompressor 324 and cryptographic smart cards 328.Decoder chassis 144 is safety, chassis independently, and it has also laid encrypted smart card 328 interfaces, internal electric source and/or adjusting, cooling fan (if necessary), local control panel and external interface.Local control panel can use any difference as can be known input equipment such as the film exchange plane plate that inserts the LED indicating device.Local control panel uses usually or forms the part link and inserts door and enter inside, chassis to allow for service or to safeguard.This has unauthorized enter, steal or distort of safe lock prevention to system.During installation, the smart card 328 that comprises encryption key message (Movie House private key) is installed in the decoder chassis 144, firmly behind the front panel of locking.The cryptographic smart cards groove only could insert in the front panel of fastening.The rgb signal that outputs to projecting apparatus 148 from image decipher/decompressor 320 is connected in the decoder chassis 144 by safety, so that can not insert rgb signal when decoder chassis 144 is placed in the projector case.Can the operation of interlock prevention safe in utilization when decoder 144 correctly is not installed in projecting apparatus 148.
The audio-frequency unit of sound system 152 broadcast items on the movie theatre loud speaker.Sound system 152 receives the nearly canonical form audio signal of 12 channels from audio encryptor/decompressor 324 in preferred embodiment, or with analog form or with digital form.
In another embodiment, playing module 140 and decoder 144 are incorporated into independent broadcast decoder unit 332.The combination of playing module 140 and decoder module 148 has caused saving cost and access time: only need single cpu (292 or 312) to provide playing module 140 and decoder 144 both functions.The combination of playing module 140 and decoder 144 does not need to use fibre channel interface 288 yet.
If wish a plurality of places of watching, the information that will be configured in so on any memory device 136 is transferred to the compressed information of single image program preliminary election skew able to programme or postpones mutual different Movie Houses to the time.The skew able to programme of these preliminary elections is decided to be zero or very little basically when the single image program is performed in a plurality of Movie House of selecting fully simultaneously.At other times, these skews can be performed any value of arranging to be set as from a few minutes by several hours in order to provide very flexibly according to stored configuration and capacity.This permission movie theatre association solves the market demand such as the projection activity of first-run film better.
Figure 13 has illustrated another embodiment of invention.The direct control that user interface 344 allows on the decoder 144 is together with projecting apparatus 148 and audio system 152.JBOD (hard disk sequence) 348 comprises magnetic storage media, and such as one group of hard disk drive, they are reproduction time storage encryption/compressed encoding signal of arranging at the Movie House of appointment.JBOD348 is designed to the scalable storage needs with effective each movie theatre of support.Further, each JBOD348 comprises that built-in redundancy is to prevent the loss of programs stored information under the situation of memory cell failure.For example, each JBOD348 can be mounted in the system on the frame, and it is extendible to be fit to the difference storage needs of each cinema system.The use of JBOD348 allows movie theatre management 128 that program is shown the different display screens that dynamically are sent in the movie theatre association, also the program before the permission arrangement positive.This is to finish under the mode of high flexible, is useful to the needs or the market demand of quick response change.
In preferred embodiment, each JBOD348 is designed to the memory space that need equate with its Movie House location storage program.Like this, can be at the slice, thin piece of on same display screen, showing on the same day above an one (biplate).In addition, provide enough storages so that when still storing now " authorizing projection " program, store them before the program projection mandate in future.This available memory space has been considered authorize to play and the mandate program of performance program several hours, several days or the projection in future transmitted before a few week in the future under the situation that does not influence present mandate playing programs and display capabilities.Estimated according to numerical data memory capacity, in this arrangement, used rank in the about 120GB memory capacity of each Movie House.This capacity hypothesis is used existing compression and image technique, and it can change the needs to allow in the near future to reduce.
Disk storage space is a dynamic assignment for the program that each is written among the JBOD348.This notion is to serve for the bigger movie theatre that a plurality of display screens are arranged, because the short program with long on average arrives full-length normally about two hours.As the criterion of single display screen movie theatre, memory capacity should enough be stored the longest program.
JBOD348 also is configured to or can be configured in " striped " pattern operation, is being crossed the array streak and is temporarily stored in RAM buffer 349 receiving data under this pattern.That is to say that the reception data that will store are partly pointed to the different hard disk of memory period.Part is imported data and is transferred to a hard disk, and the part of back is transferred to next hard disk also by that analogy.After enough stand-by period write data with the permission hard disk, specific disk just can be set to again and receive the input data.Therefore, receive data and just be split into littler part or segment, each maximum that all allows with each hard disk on independent hard disk (or high) speed is stored, and the input buffering or the memory body storage that can provide in the hard disk input channel have been provided.This has allowed slower transmission rate device, in essence to obtain data concurrently and has therefore finished very high transfer rate.This storage also provides the error protection redundancy.
The memory by using of the data on hard disk or other memory devices parity information, its allows program in case reconfigure when retrieving.That is to say that generator couples together the program part again in retrieval or performance.
In preferred embodiment, each JBOD348 is based on the array design that the cheap apparatus redundant array (RAID) of whole data file recovery capability is arranged as hard disk failure in the infructescence.JBOD348 provides state and warning indicator to help trouble shoot or wrong the isolation.Remote state, control and diagnosis also can be used to this design.
At Figure 12 movie theatre management 128 has been described.Movie theatre management 128 provides whole performance or movie theatre subsystem 104 or the operation control and the monitoring of one or more Movie House modules 132 in movie theatre association.Movie theatre management 128 also can use program control device or mechanism to produce program set from one or more reception independent images and audio program, and these programs are arranged at the projection of Movie House system in the mandate time interval.
Movie theatre management 128 comprises movie theatre management processor 336, and can optionally comprise at least one modulator-demodulator 340 or other and transmission information and return the equipment that the back link of central hub 102 docks.Movie theatre management 128 comprise video display component such as monitor or user interface facilities such as keyboard, it can be placed in gerentocratic office of movie theatre association, ticket booth or other any places that is fit to that is convenient to the movie theatre operation.
Movie theatre management processor 336 generally is a standard business level computer.With reference to Figure 12 and Fig. 2, movie theatre management processor 336 communicates with network management 120 and conditional access management 124.In preferred embodiment, modulator-demodulator 340 is used to communicate with central hub 102.Modulator-demodulator 340 generally is the standard telephone line modem, and it is placed in the processor or with processor and is connected, and connects the standard two wire telephone wire to communicate by letter with central hub 102 back.In optional embodiment, can use other low data rate communications method to transmit communicating by letter of movie theatre management processor 336 and 102 of central hub such as internet, special use or public data network, wireless or satellite communication system.For these selections, modulator-demodulator 340 is configured to provide the interface suitable structure.
Back with reference to Fig. 2, movie theatre management 128 allows each Movie House module 132 to communicate with each memory device 136.Movie theatre administration module interface can comprise buffer storage so that the information character group can use movie theatre management interfaces 126 transmit from movie theatre memory device 136 with high data rate, and by other elements of Movie House module 132 with lower rate processing they.
The information of movie theatre management 128 and network management 120 and/or 124 transmission of conditional access management comprises the request to the message part re-transmission of the unmodified bit mistake of appearance, monitoring and control information, operationral report and warning and the cryptographic key information that is received by movie theatre subsystem 104.The information that transmits can be cryptoguard so that eavesdropping class safety and/or checking and authentication to be provided.
Movie theatre management 128 can be configured to the full automatic working that display system is provided, and comprises control, safety and the Network Management Function of broadcast/demonstration.Movie theatre management 128 also can provide control ratio such as ticket reservation and sale, privileged operation and the environment control of peripheral movie theatre function.Selectively, can replenish the control of some movie theatre operations with manual intervention.Control or the adjustment to carry out these functions also can be in movie theatre association be docked in movie theatre management 128 with specific existence control automatic system.Just as can be known, the system of use will depend on the needs of available technology and particular theater.
By the control or the network management 120 of movie theatre management 128, when generally being supported on a plurality of displaying projectors recorded program, invention plays and performance.In addition, under the control of movie theatre management 128 or network management 120,, also to often carry out playing programs mandate repeatedly even 104 needs of movie theatre subsystem receive a program.Safety management can be controlled each program and allow the time span of playing and/or play quantity.
By automatic control, provide the device of automatic storage and items on the program by 112 pairs of movie theatre management 128 of network management module.In addition, use control element to have the ability control from network operation away from the particular pre-selected in central apparatus place.For example, TV or motion picture studio energy automation and control film and other performances are from the distribution in central place, such as film studio office, and to the quick variation of the explanation market demand or understandable former thereby performance carried out almost immediately variation to the reflection of performance or other this areas.
Back with reference to Fig. 2, movie theatre subsystem 104 can use movie theatre interface network 126 to be connected with Movie House module 132.Movie theatre interface network 126 comprises local area network (LAN) (electronics or optical fiber), and it is to transmit in this locality of the program of movie theatre subsystem 104 to prepare.Program is stored in each memory device 136 and is sent to by movie theatre interface network 126 the one or more Movie House system 132 of movie theatre subsystem 104.Movie theatre interface network 126 can realize with more any standard LAN architecture, and it represents enough data transmission rates, connectivity and reliability such as judgement loop, exchange or towards concentrator network.
Still with reference to Fig. 2, each memory device 136 is prepared for this locality storage that is authorized to play with the display program data.In one embodiment, in each cinema system centralize storage system.Movie theatre memory device 136 allows movie theatre subsystem 104 to carry out performing active in one or more Movie Houses and shares in several Movie Houses at one time.
According to capacity, movie theatre memory device 136 can once be stored several programs.Movie theatre memory device 136 can connect by this way with local area network (LAN): play and perform any program in any mandate performance system (projecting apparatus just).Same program also can be play in two or more performance systems simultaneously simultaneously.
Therefore, the equipment and the method for decoding, decompression and the deciphering of image and/or audio-frequency information are provided.This equipment and method considered positive and advertisement flexible arrangement, audio frequency and picture signal comprehensive and safety measure be easy to realize wherein also having other characteristics and advantage.
Provide the description of above preferred embodiment to make those skilled in the art can realize or use the present invention.It is conspicuous that the difference of these embodiment is revised those skilled in the art, and defined here general principle need not to utilize creative work of the present invention just can be applied to other embodiment.Like this, do not wish that the present invention is defined in embodiment shown here, and should give and the corresponding to wide region of the principle that here discloses and novel features.

Claims (61)

1. equipment, handle therein at least one storage medium with the coded image of compression and encrypted form presentation video program and a plurality of audio programs relevant with described image programs and audio signal to start the demonstration of described image programs, equipment comprises:
Memory device is configured to receive a plurality of storage mediums, the each several part of described a plurality of storage medium distributed earth store compressed scrambled images and audio signal; And
Decoder, the various piece that is configured to from described a plurality of storage mediums, to receive the each several part of described compress-encrypt coded image and audio signal and reconfigures described image and audio signal, described decoder comprises:
First decipher is configured to from described a plurality of storage mediums to receive the compress-encrypt coding image signal and described compress-encrypt coding image signal is decrypted;
First decompressor is configured to from first decipher to receive the compression coded image signal and described compression coded image signal is decompressed to start the demonstration of described image programs;
Second decipher is configured to from described a plurality of storage mediums to receive the compress-encrypt coding audio signal and described compress-encrypt coding audio signal is decrypted; And
Second decompressor is configured to from second decipher to receive the compressed encoding audio signal and described compressed encoding audio signal is decompressed optionally synchronously to play a selected audio program in described a plurality of audio program with the associated picture program.
2. by the described equipment of claim 1, it is characterized in that described decoder is configured to coded image and audio signal are decrypted and decompress in independently non-adjacent mode mutually.
3. by claim 1 or 2 described equipment, it is characterized in that in described first and second decompressors at least one is configured to use reverse self adaptation block size discrete cosine transform compress technique that contractive pressure is reduced the staff coded signal and carries out decompress(ion).
4. by claim 1 or 2 described equipment, it is characterized in that described second decompressor is configured to variable speed the compressed encoding audio program be decompressed.
5. by claim 1 or 2 arbitrary described equipment, it is characterized in that coding image signal forms at least one image programs, and described equipment further comprises discriminator, be used for one or more audio programs and at least one image programs are coupled together.
6. by claim 1 or 2 described equipment, it is characterized in that with packet coded image and audio signal being sent on described a plurality of storage medium, described decompressor further comprises the burster that goes that is configured to extract described coded image and audio signal from described packet.
7. by claim 1 or 2 described equipment, it is characterized in that described memory device further is configured to the receiving equipment private key, wherein said first and second deciphers further are configured under the condition that described device-specific key is determined compress-encrypt coded image and audio signal are decrypted.
8. by the described equipment of claim 7, it is characterized in that described device-specific key is to be stored on the key storage medium that separates with coded image or audio signal.
9. by the described equipment of claim 7, it is characterized in that described key storage medium is smart card or disk.
10. by the described equipment of claim 7, it is characterized in that further comprising the device that is used to send described device-specific key.
11. by the described equipment of claim 7, it is characterized in that further comprising be used to refer to described therein device-specific key be effective a period of time at interval and be used for guaranteeing the device of described device-specific key in only being used for during this period of time at interval.
12., it is characterized in that after losing efficacy at interval during this period of time, rewriteeing described device-specific key from the key storage medium by the described equipment of claim 7.
13. by claim 1 or 2 described equipment, it is characterized in that code signal further comprises at least one watermark, wherein said watermark can't note on the consciousness during the broadcast of image programs or selected audio program being preset as under the normal transmission rate, but when image programs or selected audio program be exactly perceptible when being different from the speed demonstration of normal speed.
14., it is characterized in that described watermark is configured to the sign demonstration when and where information relevant with coding image signal or audio program after decompressing by the described equipment of claim 13.
15. by claim 1 or 2 described equipment, it is characterized in that further comprising the movie theatre management, wherein the movie theatre management is configured to control signal is sent to described memory device and described decoder and receiving status information therefrom.
16. by claim 1 or 2 described equipment, it is characterized in that described equipment further is configured to connect, wherein said connection is configured to send and receive the information from device external.
17. by the described equipment of claim 16, it is characterized in that described information comprises control and state information or for the renewal of coding image signal and audio program.
18., it is characterized in that described connection comprises telephone for special use data link, dial telephone data link, packet type data link, the link based on internet, wireless data link or satellite-based data link by the described equipment of claim 16.
19., it is characterized in that described storage medium comprises at least one optical storage medium, at least one DVD CD, at least one magnetic storage media, at least one removable hard disk, at least one hard disk sequence JBOD module or at least one internal hard drive by claim 1 or 2 described equipment.
20. by claim 1 or 2 described equipment, it is characterized in that described storage medium comprises a plurality of storage mediums, and wherein coding image signal and coded audio program are stored on a plurality of storage mediums by discontinuous.
21., it is characterized in that different with coding image signal is by claim 1 or 2 described equipment, the coded audio program is stored in independently on the storage medium.
22. by claim 1 or 2 described equipment, it is characterized in that further comprising the code signal of representing advertisement information, and wherein different with coded image or audio signal or at least one coded audio program be that the code signal of expression advertisement information is stored in independently on the storage medium.
23. by claim 1 or 2 described equipment, it is characterized in that further comprising the synchronous buffer of broadcast with picture signal and selected audio program.
24., it is characterized in that described memory device comprises use discriminator information and connects the different preliminary elections parts of coding image signal or at least one coded audio program and the different preliminary elections device partly of storage medium by claim 1 or 2 described equipment.
25. by claim 1 or 2 described equipment, it is characterized in that described memory device further comprises provides parallel stripes information so that picture signal or audio signal are accessed and the error protection redundant devices is provided with the message transmission rate of expectation.
26., it is characterized in that at least two described storage mediums, described decipher and described decompressor being connected to each other by at least one lan interfaces by claim 1 or 2 described equipment.
27., it is characterized in that further comprising to image programs and the historical device that files and safeguard of selected audio playing programs by claim 1 or 2 described equipment.
28. by claim 1 or 2 described equipment, it is characterized in that described code signal further comprises the code signal of representing cue track, the program specific part at wherein said cue track indication link information place.
29. by claim 1 or 2 described equipment, further comprise player, wherein said player is configured in the time that is relative to each other the distribution of offsets code signal able to programme with preliminary election.
30., it is characterized in that the skew able to programme of described preliminary election is essentially zero, thereby coding image signal obtains handling a plurality of demonstrations that start image programs with the substantially identical time by the described equipment of claim 29.
31., it is characterized in that further comprising the audio player that is configured to play the selected audio program with image programs display synchronization ground by claim 1 or 2 described equipment.
32. method, handle therein at least one storage medium with the demonstration with the startup image programs of the coded image of compression and encrypted form presentation video program and a plurality of audio programs relevant with described image programs and audio signal, the step that this method comprises has:
The each several part of retrieval compress-encrypt coded image and audio signal from a plurality of storage mediums;
Reconfigure the various piece of described compress-encrypt coded image and audio signal;
Compress-encrypt coded image and audio signal are decrypted to produce compression coded image and audio signal;
Described compression coded image and audio signal are decompressed; And
Synchronously show described image programs with the selected audio program in relevant described a plurality of audio programs.
33. by the described method of claim 32, it is characterized in that coding image signal and audio signal be decrypted with decompression step and take place in independently non-adjacent mode mutually.
34., it is characterized in that the step of described decompression is used reverse self adaptation block size discrete cosine transform compress technique by claim 32 or 33 described methods.
35. by claim 32 or 33 described methods, the step that it is characterized in that described decompression is to carry out with variable speed.
36., it is characterized in that the step that further comprises has by claim 32 or 33 described methods:
The assembly coding figure signal is to form at least one image programs; And
One or more audio programs and at least one image programs are coupled together.
37. by claim 32 or 33 described methods, it is characterized in that image and audio signal being stored on the storage medium, and the step of described decompression further comprises described image of extraction and audio signal from described packet with packet.
38. by claim 32 or 33 described methods, it is characterized in that further comprising the step of retrieving private key, the step of wherein said deciphering is to carry out under the condition that private key is determined.
39., it is characterized in that described private key is to be stored on the key storage medium that separates with image coding signal or audio program by the described method of claim 38.
40., it is characterized in that described key storage medium comprises smart card, magnetic storage media or optical storage medium by the described method of claim 38.
41., it is characterized in that transmitting described private key by the described method of claim 38.
42. by the described method of claim 38, it is characterized in that further comprising the described therein private key of indication and be effective a period of time at interval and guarantee the step of described private key in only being used to during this period of time at interval.
43., it is characterized in that further being included in the step that rewrote described private key after losing efficacy at interval during this period of time from described key storage medium by the described method of claim 38.
44. by claim 32 or 33 described methods, it is characterized in that further comprising the step that at least one watermark is provided, wherein said watermark can't note on consciousness during the broadcast of image programs or audio program being preset as under the normal transmission rate, but when image programs or audio program be exactly perceptible when being different from the speed demonstration of normal speed.
45., it is characterized in that described watermark identifies the demonstration when and where information relevant with decompressing image program or audio program after described decompression step by the described method of claim 44.
46. by claim 32 or 33 described methods, it is characterized in that further comprising the step that the movie theatre manager is provided, wherein said movie theatre management sends and state that receives relevant storage, deciphering and decompression step and control information.
47. by claim 32 or 33 described methods, it is characterized in that further comprising and connect with this step that sends and receives information.
48. by the described method of claim 47, it is characterized in that described information comprises state and control information or for the renewal of coded image program and/or audio program.
49., it is characterized in that described connection comprises telephone for special use data link, dial telephone data link, packet type data link, the link based on internet, wireless data link or satellite-based data link by the described method of claim 47.
50., it is characterized in that described storage medium comprises at least one magnetic storage media, at least one optical storage medium, at least one removable hard disk, at least one hard disk sequence JBOD module or at least one internal hard drive by claim 32 or 33 described methods.
51. by claim 32 or 33 described methods, it is characterized in that described storage medium comprises a plurality of magnetic storage media, and image and audio signal are stored on a plurality of magnetic storage media by discontinuous.
52., it is characterized in that different with coding image signal is by claim 32 or 33 described methods, audio signal is stored in independently on the magnetic storage media.
53. by claim 32 or 33 described methods, it is characterized in that further comprising retrieval expression advertisement information the step of code signal, and different with coding image signal and/or coded audio program be that the code signal of described expression advertisement information is stored in independently on the magnetic storage media.
54., it is characterized in that further comprising buffering image and audio signal during playing, to make image programs and selected audio program synchronous by claim 32 or 33 described methods.
55., it is characterized in that further comprising the different preliminary elections parts of connection coding image signal or audio signal and the different preliminary elections step partly of described storage medium by claim 32 or 33 described methods.
56. by claim 32 or 33 described methods, it is characterized in that further comprising and provide parallel stripes information so that coding image signal or coded audio program are accessed and the step of error protection redundancy is provided with the message transmission rate of expectation.
57., it is characterized in that further comprising the step that the play history of coded image program and selected audio program is filed and safeguarded by claim 32 or 33 described methods.
58. by claim 32 or 33 described methods, it is characterized in that further comprising the step of the specific part of the coded image at indication link information place and audio signal.
59., it is characterized in that further comprising the step that shows described image programs by claim 32 or 33 described methods.
60. by claim 32 or 33 described methods, it is characterized in that further being included in the time that is relative to each other step with the distribution of offsets code signal able to programme of preliminary election.
61., it is characterized in that the skew able to programme of described preliminary election is essentially zero, thereby coding image signal obtains handling a plurality of demonstrations that start image programs with the substantially identical time by the described method of claim 60.
CNB008188017A 1999-12-02 2000-11-30 Apparatus and method for decoding digital image and audio signals Expired - Fee Related CN100380968C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US16860599P 1999-12-02 1999-12-02
US60/168,605 1999-12-02
US09/563,880 US20020056081A1 (en) 1999-12-02 2000-05-03 Apparatus and method for decoding digital image and audio signals
US09/563,880 2000-05-03

Publications (2)

Publication Number Publication Date
CN1433637A CN1433637A (en) 2003-07-30
CN100380968C true CN100380968C (en) 2008-04-09

Family

ID=26864296

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB008188017A Expired - Fee Related CN100380968C (en) 1999-12-02 2000-11-30 Apparatus and method for decoding digital image and audio signals

Country Status (12)

Country Link
EP (1) EP1249126A1 (en)
JP (1) JP2003523653A (en)
CN (1) CN100380968C (en)
AU (1) AU2055801A (en)
BR (1) BR0016054A (en)
CA (1) CA2393029A1 (en)
IL (1) IL149949A0 (en)
MX (1) MXPA02005349A (en)
NZ (1) NZ519132A (en)
RU (1) RU2257686C2 (en)
TW (1) TW515205B (en)
WO (1) WO2001041443A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3678164B2 (en) 2001-04-13 2005-08-03 ソニー株式会社 Data transfer system, data transfer device, data recording device, and data transfer method
US7203319B2 (en) * 2001-07-09 2007-04-10 Qualcomm, Inc. Apparatus and method for installing a decryption key
FR2831757B1 (en) * 2001-10-26 2004-01-30 Canal Plus Technologies METHOD FOR VERIFYING TELEVISION RECEIVERS WITH ACCESS CONTROL AND CORRESPONDING RECEIVER
US8150937B2 (en) * 2004-10-25 2012-04-03 Apple Inc. Wireless synchronization between media player and host device
US6975773B1 (en) * 2002-07-30 2005-12-13 Qualcomm, Incorporated Parameter selection in data compression and decompression
US6812994B2 (en) 2002-12-04 2004-11-02 Eastman Kodak Company Streamlined methods and systems for scheduling and handling digital cinema content in a multi-theatre environment
US7825915B2 (en) * 2004-02-03 2010-11-02 Intel Corporation Codec control
FR2868636B1 (en) * 2004-03-30 2006-09-01 Noel Vogt METHOD FOR SECURING A DEVICE FOR ACCESSING ENCRYPTED PROGRAM CHAINS PROGRAMS, SECURITY MANAGEMENT COMPUTER PROGRAM PRODUCT, AND CORRESPONDING SECURE DECODER
US9609279B2 (en) 2004-09-24 2017-03-28 Google Inc. Method and system for providing secure CODECS
US8381086B2 (en) * 2007-09-18 2013-02-19 Microsoft Corporation Synchronizing slide show events with audio
JP4434267B2 (en) 2007-11-22 2010-03-17 ソニー株式会社 Interface circuit
CN101999253B (en) * 2008-06-10 2017-09-29 飞利浦灯具控股公司 For the user interface facilities and method and the photosystem using such user interface facilities of the consumer load for controlling connection
EP2289285B1 (en) * 2008-06-10 2013-08-21 Koninklijke Philips Electronics N.V. User interface device for controlling a consumer load and light system using such user interface device
JP4645717B2 (en) 2008-09-26 2011-03-09 ソニー株式会社 Interface circuit and video apparatus
RU2647693C9 (en) * 2012-03-28 2018-09-03 ДжейВиСи КЕНВУД КОРПОРЕЙШН Picture decoding device and picture decoding method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5381476A (en) * 1992-01-24 1995-01-10 Matsushita Electric Industrial Co., Ltd. Video theater system and reproducing apparatus therefor
WO1999059335A1 (en) * 1998-05-08 1999-11-18 Qualcomm Incorporated Apparatus and method for distribution of high quality image and audio programs to remote locations

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5381476A (en) * 1992-01-24 1995-01-10 Matsushita Electric Industrial Co., Ltd. Video theater system and reproducing apparatus therefor
WO1999059335A1 (en) * 1998-05-08 1999-11-18 Qualcomm Incorporated Apparatus and method for distribution of high quality image and audio programs to remote locations

Also Published As

Publication number Publication date
AU2055801A (en) 2001-06-12
BR0016054A (en) 2003-07-01
RU2002117434A (en) 2004-03-10
TW515205B (en) 2002-12-21
IL149949A0 (en) 2002-11-10
CN1433637A (en) 2003-07-30
CA2393029A1 (en) 2001-06-07
MXPA02005349A (en) 2003-02-12
NZ519132A (en) 2004-08-27
WO2001041443A1 (en) 2001-06-07
EP1249126A1 (en) 2002-10-16
JP2003523653A (en) 2003-08-05
RU2257686C2 (en) 2005-07-27

Similar Documents

Publication Publication Date Title
KR100751648B1 (en) Apparatus and method for encoding and storage of digital image and audio signals
KR100791825B1 (en) Apparatus and method for decoding digital image and audio signals
US8813137B2 (en) Apparatus and method for decoding digital image and audio signals
US7203319B2 (en) Apparatus and method for installing a decryption key
JP5490846B2 (en) Apparatus and method for distributing high-quality image and high-quality audio programs to remote locations
CN100380968C (en) Apparatus and method for decoding digital image and audio signals
US20030016302A1 (en) Apparatus and method for conditioning digital image data for display of the image represented thereby
AU2005242186A1 (en) Apparatus and method for encoding and storage of digital image and audio
AU2005239736A1 (en) Apparatus and method for decoding digital image and audio signals
AU2002316523A1 (en) Apparatus and method for installing a decryption key
AU2002354615A1 (en) Apparatus and method for conditioning digital image data for display of the image represented thereby

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1056070

Country of ref document: HK

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080409

Termination date: 20111130