MY164422A - Access restriction to media content using partial encryption and decryption - Google Patents

Access restriction to media content using partial encryption and decryption

Info

Publication number
MY164422A
MY164422A MYPI2012701184A MYPI2012701184A MY164422A MY 164422 A MY164422 A MY 164422A MY PI2012701184 A MYPI2012701184 A MY PI2012701184A MY PI2012701184 A MYPI2012701184 A MY PI2012701184A MY 164422 A MY164422 A MY 164422A
Authority
MY
Malaysia
Prior art keywords
media content
attribute data
present
replacing
encrypting
Prior art date
Application number
MYPI2012701184A
Inventor
Mohamad Fairuz R Mohamad Yusoff Raja
Azuddin Parman Mohd
Abd Aziz Norazah
Abu Talib Azhar
Original Assignee
Mimos Berhad
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mimos Berhad filed Critical Mimos Berhad
Priority to MYPI2012701184A priority Critical patent/MY164422A/en
Priority to PCT/MY2013/000237 priority patent/WO2014092538A1/en
Publication of MY164422A publication Critical patent/MY164422A/en

Links

Classifications

    • 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
    • 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
    • H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
    • 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, 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
    • H04N21/44055—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 by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627—Rights management associated to the content
    • 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
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
    • 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
    • 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

Abstract

THE PRESENT INVENTION DISCLOSES A METHOD FOR RESTRICTING ACCESS INCLUDING PARTIAL ENCRYPTING A MEDIA CONTENT, A METHOD FOR TRANSFORMING OR MODIFYING ATTRIBUTE DATA (13) AND A METHOD FOR DE-RESTRICTING ACCESS INCLUDING PARTIAL DECRYPTING THE MEDIA CONTENT. THE METHOD FOR ENCRYPTING MEDIA CONTENT ACCORDING TO THE PRESENT INVENTION COMPRISES THE STEPS OF REPLACING AND ENCRYPTING AN ATTRIBUTE DATA (13) AND REPLACING IT WITH A MODIFIED ATTRIBUTE DATA (27). IN ANOTHER EMBODIMENT OF THE PRESENT INVENTION, THE METHOD FOR DECRYPTING THE MEDIA CONTENT COMPRISES THE STEPS OF REPLACING THE MODIFIED ATTRIBUTE DATA (27) WITH THE DECRYPTED ATTRIBUTE DATA (45) AND LOADING THE FULL MEDIA CONTENT IF THE PASSWORD (23) KEYED IN BY THE USER IS CORRECT AND THE LIMITATION PARAMETER (21) IS STILL WITHIN ALLOWABLE RANGE, WHEREAS IF THE PASSWORD (23) IS NOT CORRECT OR THE LIMITATION PARAMETER (21) IS NOT WITHIN THE ALLOWABLE RANGE, THE MEDIA CONTENT WILL NOT BE DISPLAYED IN FULL. A FURTHER EMBODIMENT OF THE PRESENT INVENTION DESCRIBES A METHOD WHICH INVOLVES MODIFYING THE ATTRIBUTE DATA (13) ACCORDING TO A SELECTED MODIFICATION TYPE. MOST ILLUSTRATIVE
MYPI2012701184A 2012-12-14 2012-12-14 Access restriction to media content using partial encryption and decryption MY164422A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MYPI2012701184A MY164422A (en) 2012-12-14 2012-12-14 Access restriction to media content using partial encryption and decryption
PCT/MY2013/000237 WO2014092538A1 (en) 2012-12-14 2013-12-06 Method for partial encrypting and decrypting media content

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MYPI2012701184A MY164422A (en) 2012-12-14 2012-12-14 Access restriction to media content using partial encryption and decryption

Publications (1)

Publication Number Publication Date
MY164422A true MY164422A (en) 2017-12-15

Family

ID=50029187

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2012701184A MY164422A (en) 2012-12-14 2012-12-14 Access restriction to media content using partial encryption and decryption

Country Status (2)

Country Link
MY (1) MY164422A (en)
WO (1) WO2014092538A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114679625B (en) * 2022-05-27 2022-09-23 南斗六星系统集成有限公司 Method for preventing historical video playback data from being stolen and tampered

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7127619B2 (en) 2001-06-06 2006-10-24 Sony Corporation Decoding and decryption of partially encrypted information
GB0306192D0 (en) * 2003-03-18 2003-04-23 British Telecomm Data file splitting
FR2860122B1 (en) * 2003-09-24 2006-03-03 Medialive SCREENING, UNLOCKING AND SECURED DISTRIBUTION OF AUDIOVISUAL SEQUENCES FROM DCT BASED VIDEO ENCODERS
US7286668B2 (en) 2003-09-29 2007-10-23 Inventec Appliances Corp. Method of protecting copyright of digital video work
JP4541102B2 (en) * 2004-10-25 2010-09-08 パイオニア株式会社 Video signal distribution system and video signal distribution method
US20070083467A1 (en) 2005-10-10 2007-04-12 Apple Computer, Inc. Partial encryption techniques for media data
US7688977B2 (en) 2006-03-31 2010-03-30 Brandenburgische Technische Universitaet Cottbus Method for encrypting video data

Also Published As

Publication number Publication date
WO2014092538A1 (en) 2014-06-19

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