TW200701791A - Method and apparatus for encrypting and decrypting digital data - Google Patents
Method and apparatus for encrypting and decrypting digital dataInfo
- Publication number
- TW200701791A TW200701791A TW095122565A TW95122565A TW200701791A TW 200701791 A TW200701791 A TW 200701791A TW 095122565 A TW095122565 A TW 095122565A TW 95122565 A TW95122565 A TW 95122565A TW 200701791 A TW200701791 A TW 200701791A
- Authority
- TW
- Taiwan
- Prior art keywords
- digital data
- huffman tables
- image parameter
- encrypting
- active
- Prior art date
Links
- 108091026890 Coding region Proteins 0.000 abstract 2
- 230000035772 mutation Effects 0.000 abstract 1
Classifications
-
- 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
- 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
- H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
-
- 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
- H04N19/162—User input
-
- 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
- H04N19/46—Embedding additional information in the video signal during the compression process
-
- 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
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
-
- 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
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/172,369 US7549058B1 (en) | 2005-06-30 | 2005-06-30 | Method and apparatus for encrypting and decrypting digital data |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200701791A true TW200701791A (en) | 2007-01-01 |
TWI327029B TWI327029B (en) | 2010-07-01 |
Family
ID=37597886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW095122565A TWI327029B (en) | 2005-06-30 | 2006-06-22 | Method and apparatus for encrypting and decrypting digital data |
Country Status (3)
Country | Link |
---|---|
US (1) | US7549058B1 (zh) |
CN (1) | CN1893350B (zh) |
TW (1) | TWI327029B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI384862B (zh) * | 2008-09-19 | 2013-02-01 | Silicon Motion Inc | 影像解碼裝置及方法 |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6701528B1 (en) | 2000-01-26 | 2004-03-02 | Hughes Electronics Corporation | Virtual video on demand using multiple encrypted video segments |
US7801303B2 (en) * | 2004-03-01 | 2010-09-21 | The Directv Group, Inc. | Video on demand in a broadcast network |
US9178693B2 (en) * | 2006-08-04 | 2015-11-03 | The Directv Group, Inc. | Distributed media-protection systems and methods to operate the same |
US9225761B2 (en) * | 2006-08-04 | 2015-12-29 | The Directv Group, Inc. | Distributed media-aggregation systems and methods to operate the same |
JP2010279496A (ja) * | 2009-06-03 | 2010-12-16 | Fujifilm Corp | データ転送システム、送信装置、受信装置、放射線画像転送システム、および放射線画像診断システム |
US8762348B2 (en) * | 2009-06-09 | 2014-06-24 | Emc Corporation | Segment deduplication system with compression of segments |
US8731190B2 (en) * | 2009-06-09 | 2014-05-20 | Emc Corporation | Segment deduplication system with encryption and compression of segments |
US8401181B2 (en) * | 2009-06-09 | 2013-03-19 | Emc Corporation | Segment deduplication system with encryption of segments |
PT2411960E (pt) * | 2009-06-29 | 2013-03-11 | Nds Ltd | Extração de mensagem de proteção de conteúdos |
US20110075537A1 (en) * | 2009-09-25 | 2011-03-31 | General Electric Company | Holographic disc with improved features and method for the same |
CN102014288A (zh) * | 2010-12-24 | 2011-04-13 | 北京理工大学 | 一种可边录制边加密的视频编码芯片 |
US9679120B2 (en) * | 2011-05-05 | 2017-06-13 | Bally Gaming Inc. | Encrypting multicast data in a wagering game network |
WO2013048481A1 (en) * | 2011-09-30 | 2013-04-04 | Intel Corporation | Media content rating management with pattern matching |
US20130259395A1 (en) * | 2012-03-30 | 2013-10-03 | Pascal Massimino | System and Method of Manipulating a JPEG Header |
US8593308B1 (en) * | 2012-05-31 | 2013-11-26 | International Business Machines Corporation | Method of accelerating dynamic Huffman decompaction within the inflate algorithm |
US10218496B2 (en) * | 2014-08-04 | 2019-02-26 | Cryptography Research, Inc. | Outputting a key based on an authorized sequence of operations |
TWI578187B (zh) * | 2016-03-30 | 2017-04-11 | 新唐科技股份有限公司 | 資料保護方法 |
CN108777611B (zh) * | 2018-05-11 | 2021-06-18 | 吉林大学 | 基于双密钥流密码的双向链表顺序加密解密方法 |
CN113473152B (zh) * | 2021-06-07 | 2022-08-30 | 东北大学 | 一种基于混沌的h.264视频快速零码率膨胀加密方法 |
CN114866657B (zh) * | 2022-03-09 | 2023-06-13 | 西南交通大学 | 选择明文安全且密文图像文件大小减小的jpeg图像加密方法 |
CN115883841B (zh) * | 2023-03-03 | 2023-05-26 | 济南霍兹信息科技有限公司 | 一种基于霍夫曼编码的计算机信息存储系统 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4646061A (en) * | 1985-03-13 | 1987-02-24 | Racal Data Communications Inc. | Data communication with modified Huffman coding |
US4897717A (en) * | 1988-03-30 | 1990-01-30 | Starsignal, Inc. | Computer-based video compression system |
KR100186915B1 (ko) * | 1994-07-13 | 1999-05-01 | 모리시다 요이치 | 디지털 부호화 장치 및 디지털 부호 복호화 장치 |
KR970019336A (ko) * | 1995-09-29 | 1997-04-30 | 김광호 | 팩시밀리시스템의 데이타 암호화 장치 및 방법 |
-
2005
- 2005-06-30 US US11/172,369 patent/US7549058B1/en not_active Expired - Fee Related
-
2006
- 2006-06-22 TW TW095122565A patent/TWI327029B/zh not_active IP Right Cessation
- 2006-06-29 CN CN2006100957032A patent/CN1893350B/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI384862B (zh) * | 2008-09-19 | 2013-02-01 | Silicon Motion Inc | 影像解碼裝置及方法 |
Also Published As
Publication number | Publication date |
---|---|
US7549058B1 (en) | 2009-06-16 |
CN1893350B (zh) | 2012-06-20 |
CN1893350A (zh) | 2007-01-10 |
TWI327029B (en) | 2010-07-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |