US20040018001A1 - Method and system for deterring electronic video piracy through image rearrangement - Google Patents
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- US20040018001A1 US20040018001A1 US10/391,475 US39147503A US2004018001A1 US 20040018001 A1 US20040018001 A1 US 20040018001A1 US 39147503 A US39147503 A US 39147503A US 2004018001 A1 US2004018001 A1 US 2004018001A1
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- 230000008707 rearrangement Effects 0.000 title claims abstract description 8
- 230000015654 memory Effects 0.000 claims abstract description 13
- 239000000872 buffer Substances 0.000 description 27
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
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- 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
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
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- 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, rendering scenes according to MPEG-4 scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
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- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
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- H—ELECTRICITY
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- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/169—Systems operating in the time domain of the television signal
- H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- 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
Definitions
- the present invention relates to electronic video reproduction systems and more particularly to methods and devices for preventing unauthorized duplication of electronic video presentations.
- the present invention is described as it relates to digital movies and their presentation in theatres, however it should be understood to be equally applicable to other digital video presentations methods and systems.
- a major problem with digital movies today is piracy, or the unauthorized reproduction thereof. Pirated copies of movies can be found on film and other electronic media, such as video tape, or magnetic or optical disk. Pirated movies are sold around the world and shown without any royalties being paid to the proper persons, e.g. the originators or studio. Accordingly, it is desirable that electronic video presentation systems be as secure as possible and as immune to piracy as possible.
- FIG. 1 illustrates such a system 10 .
- like references designate like elements of the invention.
- a video presentation such as a movie is typically prepared at a location 20 such as a studio.
- the movie is typically displayed at a distinct location 30 such as a theatre.
- a movie is captured and digitized, and compressed into a bitstream which is then encrypted to provide a secured, digital bitstream 50 .
- the movie is reproducible from the bitstream 50 .
- the encrypted bitstream 50 is transported to a remote location 30 by some means, such as a computer network or physical medium like a magnetic tape or disk, for example.
- the encrypted bitstream 50 is decrypted and decompressed using conventional processing elements 60 .
- the decrypted, decompressed bitstream 70 is fed to projector 80 which displays it on a movie screen for example.
- the physical studio 20 can be secured so as to protect the movie from being pirated.
- the bitstream 50 is encrypted.
- sufficiently robust encryption techniques exist and are used to prevent easy reproduction of pirated copies of the movie.
- decryption and decompression, using elements 60 happen almost simultaneously. This typically is provided on the same computer platform which can also be made sufficiently secure using conventional locked housings, or enclosures.
- decrypted and decompressed signal 70 is conventionally a “clear” signal that can potentially be intercepted and stolen using appropriate equipment.
- a method for frustrating unauthorized duplication of at least a portion of a sequence of images being embodied in digital data in a given order in a bitstream including: storing data corresponding to an individual one of the plurality of images in at least one memory device in the given order; and, reading the data out from the at least one memory device in a pseudorandom order as part of the bitstream to provide a rearranged order of digital data different from the given order and adapted to frustrate conventional display of the sequence of images.
- a method for providing a bitstream having digital data that has been rearranged from a given order corresponding to a plurality of images so as to frustrate unauthorized reproduction of the images to a display device for receiving the digital data in the given order including: storing at least a portion of the rearranged bitstream in a memory according to a pseudorandom sequence corresponding to the rearrangement; and, sequentially reading the data out from the memory in a the given order.
- FIG. 1 illustrates a block diagram of a conventional movie production, delivery and presentation system discussed in the background of the invention
- FIG. 2 illustrates a more detailed view of a presentation portion of the system of FIG. 1;
- FIG. 3 illustrates the presentation portion of FIG. 2, adapted according to a preferred form of the present invention.
- FIG. 4 illustrates rearrangement of an image or frame of a movie according to the present invention.
- the present invention basically operates by rearranging at least some if not all of the individual images of the movie transmitted to the projector 80 such that even if stolen, these images cannot be readily reconstituted into a useful reproduction of the movie.
- a digital video or movie includes a series of images or frames displayed sequentially. On film, each image is complete and intact. In a digital movie, each image is made up of pixels. Of course, pixel is short for Picture Element, and is the smallest single addressable element in a graphic image. Each pixel is well defined and arranged in rows and columns to form a two-dimensional array as is well understood. The array of pixels forms the image to be displayed as a frame of the movie.
- the present invention utilizes the fact each image in a digital movie is divided into pixels, and manipulates the individual images to further protect the movie from piracy.
- Image source 90 can take the form of decryptor and decompressor 60 as illustrated in FIG. 1, or any other suitable configuration for providing digital images to projector 80 .
- Image source 90 provides digital signal 70 to projector 80 .
- the signal 70 includes pixels which make up the individual images of the movie displayed by the projector 80 , frame by frame.
- the pixels corresponding to any given image in the signal 70 may be displayed simultaneously or sequentially as in a raster scan. In either case, each image is transmitted in signal 70 as individual pixels or blocks of pixels in a fixed order which does not change from image to image, (e.g. frame to frame).
- the present invention prevents piracy of signal 70 and hence the movie displayed using projector 80 by varying the order of the pixels or blocks of pixels of each image in the signal 70 in a random manner from image to image.
- FIG. 3 therein is illustrated a configuration 100 including the theatre 30 configuration of FIG. 2 adapted according to the present invention to prevent unauthorized duplication of the signal 70 ′.
- the configuration 100 includes frame buffer 1 10 and randomizer 120 .
- An input of the frame buffer 110 is coupled to an output of the image source 90 .
- the output of the frame buffer 110 is coupled to an input of randomizer 120 .
- Signal 70 ′ is transmitted between an output of randomizer 120 and an input of derandomizer 130 as is illustrated in FIG. 3.
- An output of the derandomizer 130 is coupled to an input of frame buffer 140 and an output of the frame buffer 140 is coupled to an input of projector 80 .
- frame buffer 110 and randomizer 120 are in close physical proximity to image source 90 , and preferably located in the same housing or enclosure 95 as the image source 90 .
- image source 90 provides an output to frame buffer 110 .
- Frame buffer 110 holds at least part of each image output from image source 90 .
- frame buffers 110 and 140 each include an array of addressable memory locations which each has a unique identifier or memory address assigned to it. Frame buffers and storage devices and memories are of course well known and widely employed in the video related arts.
- Randomizer 120 accesses contents of the memory addresses of frame buffer 110 in a pseudo-random manner and writes the contents of these pseudo-randomly accessed addresses sequentially as part of signal 70 ′.
- a pseudo-random number generator can be used to generate a pseudo-random sequence that satisfies statistical tests for randomness.
- the random sequence provided by these types of generators can be repeated by starting from the same starting point.
- a pseudo-random sequence to control the order of access and readout of data as stored by the frame buffer 110 , a pseudo-randomized version of each image or frame that make up the movie to be displayed by projector 80 is transmitted as signal 70 ′ on the vulnerable link between image source 90 and projector 80 .
- the signal 70 ′ is randomized and less likely, if intercepted, to be effectively used than is signal 70 of FIG. 2.
- Each image or frame of the movie which was randomized using frame buffer 110 , randomizer 120 and pseudo-random sequence generator 125 is reconstructed using derandomizer 130 , pseudo-random sequence generator 135 and frame buffer 140 .
- the derandomizer 130 uses pseudo-random sequence generator 135 to generate the same pseudo-random sequence as was utilized by the randomizer 120 and pseudo-random sequence generator 125 , to apply the randomized data in signal 70 ′, corresponding to an image, to the appropriate memory addresses of frame buffer 140 .
- data is read-out from memory addresses of frame buffer 110 selected according to a pseudo-random sequence and applied to memory addresses of frame buffer 140 selected according to the same pseudo-random sequence. After being applied and stored in the frame buffer 140 , the data is then supplied in a conventional manner to the projector 80 which displays the corresponding image.
- data corresponding to that image is stored in identical corresponding addresses in the frame buffers 110 and 140 as that data is conventionally supplied to frame buffer 110 , pseudo-randomly read out from frame buffer 110 , applied to frame buffer 140 utilizing the same pseudo-random sequence as was used to read frame buffer 110 , and conventionally read-out from frame buffer 140 .
- derandomizer 130 and frame buffer 140 can be made relatively physically smaller, and hence suitable for placement within a typical projector 80 enclosure 85 without significant modifications being made thereto.
- the derandomizer 130 and frame buffer 140 are physically positioned within the projector 80 housing, or enclosure 85 .
- FIG. 4 there is illustrated an example of how an individual image or frame 150 of a movie can be rearranged according to the present invention for transmission as part of signal 70 ′.
- images 150 or frames of the movie to be displayed using projector 80 can advantageously be rearranged according to the present invention differently in a random manner.
- the discussion of the present invention hereto has been as it relates to individual pixels, the block size or size of a pixel group, utilized for randomization, can vary from a substantial portion of each image down to individual pixels depending upon particular design criteria.
- macroblocks For example, in digital videos the use of macroblocks, four blocks of luminance, one C r block and one C b block is well known. In a preferred form of the present invention, individual macroblocks are rearranged using the methodology set forth hereto.
- Image 150 includes groups of pixels 1 - 9 .
- reconstructed image 150 ′′ provided by frame buffer 140 to projector 80 also includes groups of pixels 1 - 9 in the same order and respective positions as in image 150 .
- images 150 and 150 ′′ are respectively protected within image source enclosure 95 and projector enclosure 85 . Accordingly, the more robust enclosures 85 and 95 are, the more secure images 150 and 150 ′′ are.
- Image 150 ′ is a representation of image 150 which has been rearranged according to the present invention for transmission as part of signal 70 ′.
- a pseudo-random sequence utilized by randomizer 120 and derandomizer 130 is necessary for proper de-arranging to generate image 150 ′′.
- the relative arrangement of pixel groups 1 - 9 in image 150 ′ is changed dependent upon the utilized pseudo-random sequence as compared to the relative arrangement of pixel groups 1 - 9 in image 150 .
- pixel group 9 in image 150 ′ has taken the relative position of pixel group 1 in image 150 .
- pixel group 1 in image 150 ′ has take the relative position of pixel group 6 in image 150 for example. It should be understood this particular pixel group rearrangement is for purposes of illustration only, as in a preferred embodiment the relative arrangement of pixel groups can change from image to image, or frame to frame.
Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 09/591,966, now U.S. Pat. No. 6,535,687, entitled “METHOD AND SYSTEM FOR DETERRING ELECTRONIC VIDEO PIRACY THROUGH IMAGE REARRANGEMENT”, filed Jun. 12, 2000, which claims the benefit of U.S. Provisional Application No. 60/145,306, entitled “MEANS OF DEFEATING ELECTRONIC MOVIE PIRACY THROUGH IMAGE REARRANGEMENT”, filed on Jul. 23, 1999, the entire disclosures of which are each hereby incorporated by reference herein.
- The present invention relates to electronic video reproduction systems and more particularly to methods and devices for preventing unauthorized duplication of electronic video presentations.
- The present invention is described as it relates to digital movies and their presentation in theatres, however it should be understood to be equally applicable to other digital video presentations methods and systems.
- A major problem with digital movies today is piracy, or the unauthorized reproduction thereof. Pirated copies of movies can be found on film and other electronic media, such as video tape, or magnetic or optical disk. Pirated movies are sold around the world and shown without any royalties being paid to the proper persons, e.g. the originators or studio. Accordingly, it is desirable that electronic video presentation systems be as secure as possible and as immune to piracy as possible.
- In an electronic video presentation system dedicated to showing digital movies or video presentations, data representative of the movie or video presentation is relatively secure for most parts of the system. FIG. 1 illustrates such a
system 10. In referring to the figures, like references designate like elements of the invention. - Referring to FIG. 1, a video presentation such as a movie is typically prepared at a
location 20 such as a studio. The movie is typically displayed at adistinct location 30 such as a theatre. Usingconventional processing elements 40 at thestudio 20, a movie is captured and digitized, and compressed into a bitstream which is then encrypted to provide a secured,digital bitstream 50. The movie is reproducible from thebitstream 50. Theencrypted bitstream 50 is transported to aremote location 30 by some means, such as a computer network or physical medium like a magnetic tape or disk, for example. In atheatre 30, theencrypted bitstream 50 is decrypted and decompressed usingconventional processing elements 60. The decrypted,decompressed bitstream 70 is fed toprojector 80 which displays it on a movie screen for example. - The
physical studio 20 can be secured so as to protect the movie from being pirated. Between thestudio 20 andtheatre 30, thebitstream 50 is encrypted. Hence, even if thebitstream 50 is intercepted or stolen, sufficiently robust encryption techniques exist and are used to prevent easy reproduction of pirated copies of the movie. Within thetheatre 30, decryption and decompression, usingelements 60, happen almost simultaneously. This typically is provided on the same computer platform which can also be made sufficiently secure using conventional locked housings, or enclosures. - However, over the transmission link between decryption and decompression by
elements 60 andprojector 80, decrypted anddecompressed signal 70 is conventionally a “clear” signal that can potentially be intercepted and stolen using appropriate equipment. - It is an object of the present invention to prevent theft or unauthorized duplication of
signal 70 of a video presentation such as a movie. - A method for frustrating unauthorized duplication of at least a portion of a sequence of images being embodied in digital data in a given order in a bitstream, the method including: storing data corresponding to an individual one of the plurality of images in at least one memory device in the given order; and, reading the data out from the at least one memory device in a pseudorandom order as part of the bitstream to provide a rearranged order of digital data different from the given order and adapted to frustrate conventional display of the sequence of images.
- A method for providing a bitstream having digital data that has been rearranged from a given order corresponding to a plurality of images so as to frustrate unauthorized reproduction of the images to a display device for receiving the digital data in the given order, the method including: storing at least a portion of the rearranged bitstream in a memory according to a pseudorandom sequence corresponding to the rearrangement; and, sequentially reading the data out from the memory in a the given order.
- The advantages and aspects of the present invention will be more fully understood in conjunction with the following detailed description and accompanying drawings, wherein:
- FIG. 1 illustrates a block diagram of a conventional movie production, delivery and presentation system discussed in the background of the invention;
- FIG. 2 illustrates a more detailed view of a presentation portion of the system of FIG. 1;
- FIG. 3 illustrates the presentation portion of FIG. 2, adapted according to a preferred form of the present invention; and,
- FIG. 4 illustrates rearrangement of an image or frame of a movie according to the present invention.
- As will be discussed herein with reference to FIGS. 3 and 4, the present invention basically operates by rearranging at least some if not all of the individual images of the movie transmitted to the
projector 80 such that even if stolen, these images cannot be readily reconstituted into a useful reproduction of the movie. As is understood by those possessing ordinary skill in the pertinent art, a digital video or movie includes a series of images or frames displayed sequentially. On film, each image is complete and intact. In a digital movie, each image is made up of pixels. Of course, pixel is short for Picture Element, and is the smallest single addressable element in a graphic image. Each pixel is well defined and arranged in rows and columns to form a two-dimensional array as is well understood. The array of pixels forms the image to be displayed as a frame of the movie. The present invention utilizes the fact each image in a digital movie is divided into pixels, and manipulates the individual images to further protect the movie from piracy. - Referring now to FIG. 2, therein is illustrated a block diagram of apparatus provided in a
theatre 30 which includesimage source 90 andprojector 80.Image source 90 can take the form of decryptor anddecompressor 60 as illustrated in FIG. 1, or any other suitable configuration for providing digital images toprojector 80.Image source 90 providesdigital signal 70 toprojector 80. As was discussed, thesignal 70 includes pixels which make up the individual images of the movie displayed by theprojector 80, frame by frame. Depending on theprojector 80, the pixels corresponding to any given image in thesignal 70 may be displayed simultaneously or sequentially as in a raster scan. In either case, each image is transmitted insignal 70 as individual pixels or blocks of pixels in a fixed order which does not change from image to image, (e.g. frame to frame). - The present invention prevents piracy of
signal 70 and hence the movie displayed usingprojector 80 by varying the order of the pixels or blocks of pixels of each image in thesignal 70 in a random manner from image to image. - Referring now to FIG. 3, therein is illustrated a
configuration 100 including thetheatre 30 configuration of FIG. 2 adapted according to the present invention to prevent unauthorized duplication of thesignal 70′. Theconfiguration 100 includesframe buffer 1 10 andrandomizer 120. An input of theframe buffer 110 is coupled to an output of theimage source 90. The output of theframe buffer 110 is coupled to an input ofrandomizer 120.Signal 70′ is transmitted between an output ofrandomizer 120 and an input ofderandomizer 130 as is illustrated in FIG. 3. An output of thederandomizer 130 is coupled to an input offrame buffer 140 and an output of theframe buffer 140 is coupled to an input ofprojector 80. - In a preferred embodiment of the present invention,
frame buffer 110 andrandomizer 120 are in close physical proximity toimage source 90, and preferably located in the same housing orenclosure 95 as theimage source 90. - According to the present invention,
image source 90 provides an output toframe buffer 110.Frame buffer 110 holds at least part of each image output fromimage source 90. As is understood by those possessing ordinary skill in the pertinent art,frame buffers Randomizer 120 accesses contents of the memory addresses offrame buffer 110 in a pseudo-random manner and writes the contents of these pseudo-randomly accessed addresses sequentially as part ofsignal 70′. - As is well understood, a pseudo-random number generator can be used to generate a pseudo-random sequence that satisfies statistical tests for randomness. The random sequence provided by these types of generators can be repeated by starting from the same starting point. By using a pseudo-random sequence to control the order of access and readout of data as stored by the
frame buffer 110, a pseudo-randomized version of each image or frame that make up the movie to be displayed byprojector 80 is transmitted assignal 70′ on the vulnerable link betweenimage source 90 andprojector 80. Hence thesignal 70′ is randomized and less likely, if intercepted, to be effectively used than issignal 70 of FIG. 2. Each image or frame of the movie which was randomized usingframe buffer 110,randomizer 120 andpseudo-random sequence generator 125 is reconstructed usingderandomizer 130,pseudo-random sequence generator 135 andframe buffer 140. - The
derandomizer 130 usespseudo-random sequence generator 135 to generate the same pseudo-random sequence as was utilized by therandomizer 120 andpseudo-random sequence generator 125, to apply the randomized data insignal 70′, corresponding to an image, to the appropriate memory addresses offrame buffer 140. In other words, data is read-out from memory addresses offrame buffer 110 selected according to a pseudo-random sequence and applied to memory addresses offrame buffer 140 selected according to the same pseudo-random sequence. After being applied and stored in theframe buffer 140, the data is then supplied in a conventional manner to theprojector 80 which displays the corresponding image. Thus, for any given image of a movie, data corresponding to that image is stored in identical corresponding addresses in theframe buffers frame buffer 110, pseudo-randomly read out fromframe buffer 110, applied toframe buffer 140 utilizing the same pseudo-random sequence as was used to readframe buffer 110, and conventionally read-out fromframe buffer 140. - It should be understood, that unlike
image source 90 which may take the form of conventional decryptor/decompressor 60 and require significant processing capabilities and a physically large computing platform,derandomizer 130 andframe buffer 140 can be made relatively physically smaller, and hence suitable for placement within atypical projector 80enclosure 85 without significant modifications being made thereto. In a preferred form of the present invention, thederandomizer 130 andframe buffer 140 are physically positioned within theprojector 80 housing, orenclosure 85. - Referring now to FIG. 4, there is illustrated an example of how an individual image or frame150 of a movie can be rearranged according to the present invention for transmission as part of
signal 70′. Using the pseudo-random sequence,images 150 or frames of the movie to be displayed usingprojector 80 can advantageously be rearranged according to the present invention differently in a random manner. It should also be understood while the discussion of the present invention hereto has been as it relates to individual pixels, the block size or size of a pixel group, utilized for randomization, can vary from a substantial portion of each image down to individual pixels depending upon particular design criteria. - For example, in digital videos the use of macroblocks, four blocks of luminance, one Cr block and one Cb block is well known. In a preferred form of the present invention, individual macroblocks are rearranged using the methodology set forth hereto.
- Referring still to FIG. 4 therein is illustrated an
original image 150 supplied byimage source 90.Image 150 includes groups of pixels 1-9. Analogously,reconstructed image 150″ provided byframe buffer 140 toprojector 80 also includes groups of pixels 1-9 in the same order and respective positions as inimage 150. It should be understoodimages image source enclosure 95 andprojector enclosure 85. Accordingly, the morerobust enclosures secure images Image 150′ is a representation ofimage 150 which has been rearranged according to the present invention for transmission as part ofsignal 70′. As set forth, a pseudo-random sequence utilized byrandomizer 120 andderandomizer 130 is necessary for proper de-arranging to generateimage 150″. As can be seen in FIG. 4, the relative arrangement of pixel groups 1-9 inimage 150′ is changed dependent upon the utilized pseudo-random sequence as compared to the relative arrangement of pixel groups 1-9 inimage 150. For example,pixel group 9 inimage 150′ has taken the relative position ofpixel group 1 inimage 150. Likewise,pixel group 1 inimage 150′ has take the relative position ofpixel group 6 inimage 150 for example. It should be understood this particular pixel group rearrangement is for purposes of illustration only, as in a preferred embodiment the relative arrangement of pixel groups can change from image to image, or frame to frame. - Although the invention has been described and pictured in a preferred form with a certain degree of particularity, it is understood that the present disclosure of the preferred form, has been made only by way of example, and that numerous changes in the details of construction and combination and arrangement of parts may be made without departing from the spirit and scope of the invention as hereinafter claimed. It is intended that the patent shall cover by suitable expression in the appended claims, whatever features of patentable novelty exist in the invention disclosed.
Claims (2)
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US10/391,475 US20040018001A1 (en) | 1999-07-23 | 2003-03-18 | Method and system for deterring electronic video piracy through image rearrangement |
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US14530699P | 1999-07-23 | 1999-07-23 | |
US09/591,966 US6535687B1 (en) | 1999-07-23 | 2000-06-12 | Method and system for deterring electronic video piracy through image rearrangement |
US10/391,475 US20040018001A1 (en) | 1999-07-23 | 2003-03-18 | Method and system for deterring electronic video piracy through image rearrangement |
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US09/591,966 Continuation US6535687B1 (en) | 1999-07-23 | 2000-06-12 | Method and system for deterring electronic video piracy through image rearrangement |
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US20040018001A1 true US20040018001A1 (en) | 2004-01-29 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070177718A1 (en) * | 2003-09-19 | 2007-08-02 | Tsutomu Shimosato | Transmitting apparatus, receiving apparatus, and data transmission system |
WO2019050951A1 (en) * | 2017-09-06 | 2019-03-14 | University Of North Texas | Systems and methods for transmitting theater-based anti piracy images |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4134452B2 (en) * | 1999-07-28 | 2008-08-20 | ヤマハ株式会社 | Digital data reproducing and recording apparatus and method |
US7305088B2 (en) * | 2000-03-03 | 2007-12-04 | Yamaha Corporation | Video distribution playback method, apparatus to be disposed on video distribution end, apparatus to be disposed on video playback end, computer readable medium, and movie distribution method |
GB0514492D0 (en) * | 2005-07-14 | 2005-08-17 | Ntnu Technology Transfer As | Secure media streaming |
US8442221B2 (en) | 2005-09-30 | 2013-05-14 | Konica Minolta Laboratory U.S.A., Inc. | Method and apparatus for image encryption and embedding and related applications |
JP2008022373A (en) * | 2006-07-13 | 2008-01-31 | Canon Inc | Alteration detection information generating apparatus, imaging apparatus, alteration detection information generating method, program, and storage medium |
PT2119232E (en) * | 2007-02-14 | 2015-02-17 | Photint Venture Group Inc | Scrambling of visual content by rearranging patterns over a matrix |
MY165337A (en) | 2007-02-14 | 2018-03-21 | Photint Venture Group Inc | Banana codec |
GB2449631B (en) | 2007-05-21 | 2012-02-15 | Doo Technologies Fze | Method and system for processing of images |
KR101151107B1 (en) | 2008-08-12 | 2012-06-01 | 에스케이플래닛 주식회사 | Moving picture encryption system and method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4087626A (en) * | 1976-08-04 | 1978-05-02 | Rca Corporation | Scrambler and unscrambler for serial data |
US5608533A (en) * | 1992-09-02 | 1997-03-04 | Pioneer Electronic Corporation | Video signal recording/reproducing apparatus where the order of access to video data during a write mode is different than the order of access during a read mode |
US5887061A (en) * | 1996-05-01 | 1999-03-23 | Oki Electric Industry Co., Ltd. | Compression coding device with scrambling function and expansion reproducing device with descrambling function |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4575754A (en) * | 1983-01-06 | 1986-03-11 | Rca Corporation | Video scrambler system |
US4563702A (en) | 1983-05-27 | 1986-01-07 | M/A-Com Linkabit, Inc. | Video signal scrambling and descrambling systems |
FR2609589A1 (en) | 1987-01-09 | 1988-07-15 | Videostone Electronique | METHODS AND DEVICES FOR PROJECTING TELEVISION PROGRAMS ON A SCREEN OF A SHOWROOM |
GB9004901D0 (en) | 1990-03-05 | 1990-05-02 | Space Communications Sat Tel L | Television scrambler |
KR930004823B1 (en) * | 1990-04-14 | 1993-06-08 | 삼성전자 주식회사 | Scrambling and descrambling circuit of television signal |
US5303294A (en) * | 1991-06-18 | 1994-04-12 | Matsushita Electric Industrial Co., Ltd. | Video theater system and copy preventive method |
US5321748A (en) * | 1992-07-02 | 1994-06-14 | General Instrument Corporation, Jerrold Communications | Method and apparatus for television signal scrambling using block shuffling |
US5546461A (en) * | 1993-04-09 | 1996-08-13 | Matsushita Electric Industrial Co., Ltd. | Scramble system for use in digital video signal recording and reproducing system or transmission and receiving system, comprising scramble apparatus and descramble apparatus |
JPH0730855A (en) * | 1993-07-08 | 1995-01-31 | Sony Corp | Recording method for video data |
US6222926B1 (en) | 1996-12-18 | 2001-04-24 | Philips Electronics North America Corporation | Method and device for providing controlled access video signals without providing a signal in the clear |
JPH11298878A (en) | 1998-04-08 | 1999-10-29 | Nec Corp | Image scrambling method and device therefor |
-
2000
- 2000-06-12 US US09/591,966 patent/US6535687B1/en not_active Expired - Lifetime
- 2000-07-21 EP EP00948844A patent/EP1198954A1/en not_active Withdrawn
- 2000-07-21 WO PCT/US2000/019856 patent/WO2001008412A1/en not_active Application Discontinuation
- 2000-07-21 JP JP2001513177A patent/JP2003526967A/en active Pending
- 2000-08-08 TW TW089114610A patent/TW507457B/en not_active IP Right Cessation
-
2003
- 2003-03-18 US US10/391,475 patent/US20040018001A1/en not_active Abandoned
-
2011
- 2011-06-29 JP JP2011144636A patent/JP2011254489A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4087626A (en) * | 1976-08-04 | 1978-05-02 | Rca Corporation | Scrambler and unscrambler for serial data |
US5608533A (en) * | 1992-09-02 | 1997-03-04 | Pioneer Electronic Corporation | Video signal recording/reproducing apparatus where the order of access to video data during a write mode is different than the order of access during a read mode |
US5887061A (en) * | 1996-05-01 | 1999-03-23 | Oki Electric Industry Co., Ltd. | Compression coding device with scrambling function and expansion reproducing device with descrambling function |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070177718A1 (en) * | 2003-09-19 | 2007-08-02 | Tsutomu Shimosato | Transmitting apparatus, receiving apparatus, and data transmission system |
US20090245509A1 (en) * | 2003-09-19 | 2009-10-01 | Tsutomu Shimosato | Transmitting apparatus, receiving apparatus, and data transmitting system |
US7885407B2 (en) * | 2003-09-19 | 2011-02-08 | Sony Corporation | Transmitting apparatus, receiving apparatus, and data transmission system |
US8024580B2 (en) * | 2003-09-19 | 2011-09-20 | Sony Corporation | Transmitting apparatus, receiving apparatus, and data transmitting system |
WO2019050951A1 (en) * | 2017-09-06 | 2019-03-14 | University Of North Texas | Systems and methods for transmitting theater-based anti piracy images |
Also Published As
Publication number | Publication date |
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TW507457B (en) | 2002-10-21 |
WO2001008412A1 (en) | 2001-02-01 |
JP2011254489A (en) | 2011-12-15 |
US6535687B1 (en) | 2003-03-18 |
EP1198954A1 (en) | 2002-04-24 |
JP2003526967A (en) | 2003-09-09 |
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