CA1337214C - In-band controller - Google Patents
In-band controllerInfo
- Publication number
- CA1337214C CA1337214C CA000598213A CA598213A CA1337214C CA 1337214 C CA1337214 C CA 1337214C CA 000598213 A CA000598213 A CA 000598213A CA 598213 A CA598213 A CA 598213A CA 1337214 C CA1337214 C CA 1337214C
- Authority
- CA
- Canada
- Prior art keywords
- data
- band
- receiving
- television channel
- set top
- 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
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Control Of Eletrric Generators (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18848188A | 1988-04-29 | 1988-04-29 | |
US188,481 | 1988-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1337214C true CA1337214C (en) | 1995-10-03 |
Family
ID=22693343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000598213A Expired - Fee Related CA1337214C (en) | 1988-04-29 | 1989-04-28 | In-band controller |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0413752A4 (es) |
JP (1) | JPH03505392A (es) |
CN (1) | CN1020324C (es) |
AU (1) | AU626228B2 (es) |
BR (1) | BR8907409A (es) |
CA (1) | CA1337214C (es) |
MX (1) | MX172482B (es) |
WO (1) | WO1989010664A1 (es) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5497187A (en) * | 1991-11-29 | 1996-03-05 | Scientific-Atlanta, Inc. | In-band/out-of-band data transmission method and apparatus for a television system |
US5477262A (en) * | 1991-11-29 | 1995-12-19 | Scientific-Altanta, Inc. | Method and apparatus for providing an on-screen user interface for a subscription television terminal |
DE69511665D1 (de) * | 1994-12-07 | 1999-09-30 | Koninkl Philips Electronics Nv | Verfahren zur Adressierung von Benutzern in einem Fernsehsystem mit reserviertem Zugriff |
US5874985A (en) * | 1995-08-31 | 1999-02-23 | Microsoft Corporation | Message delivery method for interactive televideo system |
US6005602A (en) * | 1995-08-31 | 1999-12-21 | Microsoft Corporation | Message delivery method for interactive televideo system |
US6950520B1 (en) | 1999-01-26 | 2005-09-27 | Macrovision Corporation | Method and apparatus for carrying data in a video signal so that the data is not recorded |
JP3676679B2 (ja) * | 1999-01-26 | 2005-07-27 | マクロビジョン・コーポレーション | データが記録されないようにビデオ信号でデータを転送するための方法及び装置 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4334322A (en) * | 1979-10-26 | 1982-06-08 | E-Systems, Inc. | Communication management system for providing antijam/privacy capabilities for voice radio communications |
US4536791A (en) * | 1980-03-31 | 1985-08-20 | Tocom, Inc. | Addressable cable television control system with video format data transmission |
US4823386A (en) * | 1981-04-02 | 1989-04-18 | Texscan Corporation | Addressable subscriber cable television system |
US4434436A (en) * | 1981-07-13 | 1984-02-28 | Bruce Merrill | Addressable premium channel obfuscation device for cable television systems |
US4694490A (en) * | 1981-11-03 | 1987-09-15 | Harvey John C | Signal processing apparatus and methods |
US4450477A (en) * | 1982-03-31 | 1984-05-22 | Lovett Bruce E | Television information system |
CA1177558A (en) * | 1982-04-15 | 1984-11-06 | Groupe Videotron Ltee. (Le) | Cable network data transmission system |
EP0401873A3 (en) * | 1982-05-14 | 1991-09-18 | Communications Patents Limited | A communications system |
US4521770A (en) * | 1982-08-30 | 1985-06-04 | International Business Machines Corporation | Use of inversions in the near realtime control of selected functions in interactive buffered raster displays |
US4580161A (en) * | 1982-11-22 | 1986-04-01 | Pico Products, Inc. | Cable television subscriber control system including addressable filters having a variable pole |
US4709418A (en) * | 1983-09-14 | 1987-11-24 | British Telecommunications Public Limited Company | Wideband cable network |
JPS6096978A (ja) * | 1983-10-31 | 1985-05-30 | Clarion Co Ltd | 有料テレビジヨンシステム |
JPS60130282A (ja) * | 1983-12-16 | 1985-07-11 | Pioneer Electronic Corp | Catvにおけるデ−タ伝送方式 |
US4802220A (en) * | 1985-03-20 | 1989-01-31 | American Telephone And Telegraph Company, At&T Bell Laboratories | Method and apparatus for multi-channel communication security |
US4716588A (en) * | 1985-10-29 | 1987-12-29 | Payview Limited | Addressable subscription television system having multiple scrambling modes |
US4710955A (en) * | 1985-11-25 | 1987-12-01 | General Instrument Corporation | Cable television system with two-way telephone communication path |
US4817144A (en) * | 1987-03-12 | 1989-03-28 | Zenith Electronics Corporation | Secure TV scrambling system using framing code switching |
-
1989
- 1989-04-28 CA CA000598213A patent/CA1337214C/en not_active Expired - Fee Related
- 1989-04-28 EP EP19890905976 patent/EP0413752A4/en not_active Withdrawn
- 1989-04-28 BR BR898907409A patent/BR8907409A/pt not_active IP Right Cessation
- 1989-04-28 MX MX015855A patent/MX172482B/es unknown
- 1989-04-28 WO PCT/US1989/001726 patent/WO1989010664A1/en not_active Application Discontinuation
- 1989-04-28 AU AU35625/89A patent/AU626228B2/en not_active Ceased
- 1989-04-28 JP JP1505886A patent/JPH03505392A/ja active Pending
- 1989-04-29 CN CN89103494A patent/CN1020324C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU3562589A (en) | 1989-11-24 |
MX172482B (es) | 1993-12-17 |
EP0413752A1 (en) | 1991-02-27 |
CN1020324C (zh) | 1993-04-14 |
AU626228B2 (en) | 1992-07-23 |
JPH03505392A (ja) | 1991-11-21 |
EP0413752A4 (en) | 1992-04-22 |
BR8907409A (pt) | 1991-04-16 |
WO1989010664A1 (en) | 1989-11-02 |
CN1040476A (zh) | 1990-03-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5058160A (en) | In-band controller | |
US4623920A (en) | Cable network data transmission system | |
US4599647A (en) | Receiver with interface for interaction with controller-decoder | |
US5710815A (en) | Encoder apparatus and decoder apparatus for a television signal having embedded viewer access control data | |
EP0685141B1 (en) | Method of selecting cable television converter groups | |
AU643926B2 (en) | Virtual channels for a multiplexed analog component (MAC) television system | |
US5018197A (en) | Secure video decoder system | |
US5036537A (en) | Geographic black-out method for direct broadcast satellite system | |
US4694489A (en) | Video transmission system | |
CA1153103A (en) | Scrambling and unscrambling video signals in a pay tv system | |
US4771458A (en) | Secure data packet transmission system and method | |
US5347304A (en) | Remote link adapter for use in TV broadcast data transmission system | |
US4682360A (en) | Video transmission system | |
US5724525A (en) | System and method for remotely selecting subscribers and controlling messages to subscribers in a cable television system | |
US4605961A (en) | Video transmission system using time-warp scrambling | |
EP0968609B1 (en) | Signal generation and broadcasting | |
US6292567B1 (en) | Sync suppression television security system with addressable sync restoration | |
EP0926894A1 (en) | Scrambling unit for a digital transmission system | |
EP0183871A1 (en) | Two-way cable-television system | |
WO1994024826A1 (en) | Addressed messaging in a cable television system | |
WO1996009720A1 (en) | Downloading television graphics and captions | |
EP0620695A2 (en) | Information transmission system with variable transmission rate | |
CA1337214C (en) | In-band controller | |
CN1052132C (zh) | 视频信号处理器 | |
US4817144A (en) | Secure TV scrambling system using framing code switching |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKLA | Lapsed | ||
MKLA | Lapsed |
Effective date: 19981005 |