|
US4019201A
(en)
*
|
1973-08-15 |
1977-04-19 |
System Development Corporation |
Method and apparatus for scrambling and unscrambling communication signals
|
|
US4024576A
(en)
*
|
1973-08-15 |
1977-05-17 |
System Development Corporation |
Method and apparatus for scrambling and unscrambling communication signals
|
|
US4045814A
(en)
*
|
1973-08-15 |
1977-08-30 |
System Development Corporation |
Method and apparatus for scrambling and unscrambling communication signals
|
|
JPS5344293B2
(cg-RX-API-DMAC7.html)
*
|
1973-11-09 |
1978-11-28 |
|
|
|
US4024574A
(en)
*
|
1975-02-26 |
1977-05-17 |
Teleglobe Pay Tv System Inc. |
Validation method and apparatus for pay television systems
|
|
US4253114A
(en)
*
|
1976-04-08 |
1981-02-24 |
Twin County Trans-Video Inc. |
High security subscription television system employing real time control of subscriber's program reception
|
|
US4130833A
(en)
*
|
1977-04-11 |
1978-12-19 |
Teleglobe Pay-Tv System, Inc. |
Pay television system
|
|
US4112464A
(en)
*
|
1977-05-11 |
1978-09-05 |
Oak Industries Inc. |
Subscription TV decoder logic system
|
|
USRE31735E
(en)
*
|
1977-10-19 |
1984-11-13 |
Feature Film Services |
Subscriber-limited reception television broadcast security encoder-decoder system
|
|
US4215366A
(en)
*
|
1977-10-19 |
1980-07-29 |
Feature Film Services |
Subscriber-limited reception television broadcast security encoder-decoder system
|
|
JPS5539440A
(en)
*
|
1978-09-13 |
1980-03-19 |
Pioneer Electronic Corp |
Tuning system of terminal unit for catv system
|
|
US4323922A
(en)
*
|
1979-12-17 |
1982-04-06 |
Oak Industries Inc. |
Television coding system with channel level identification
|
|
US4330794A
(en)
*
|
1979-12-31 |
1982-05-18 |
Gte Automatic Electric Laboratories, Inc. |
Multichannel subscription television system
|
|
US4965825A
(en)
|
1981-11-03 |
1990-10-23 |
The Personalized Mass Media Corporation |
Signal processing apparatus and methods
|
|
USRE47642E1
(en)
|
1981-11-03 |
2019-10-08 |
Personalized Media Communications LLC |
Signal processing apparatus and methods
|
|
US7831204B1
(en)
|
1981-11-03 |
2010-11-09 |
Personalized Media Communications, Llc |
Signal processing apparatus and methods
|
|
CA1186028A
(en)
*
|
1982-06-23 |
1985-04-23 |
Microdesign Limited |
Method and apparatus for scrambling and unscrambling data streams using encryption and decryption
|
|
US4638357A
(en)
*
|
1984-01-20 |
1987-01-20 |
Home Box Office, Inc. |
Audio scrambler
|
|
AU559311B2
(en)
*
|
1984-02-15 |
1987-03-05 |
Matsushita Electric Industrial Co., Ltd. |
Pay tv charge/time data display
|
|
US4797918A
(en)
*
|
1984-05-09 |
1989-01-10 |
Communications Satellite Corporation |
Subscription control for television programming
|
|
US5023891A
(en)
*
|
1989-07-25 |
1991-06-11 |
Sf2 Corporation |
Method and circuit for decoding a Manchester code signal
|
|
US5235643A
(en)
*
|
1991-05-21 |
1993-08-10 |
Anderson Steven E |
Satellite receiver retuning system
|
|
SE9103098D0
(sv)
*
|
1991-10-24 |
1991-10-24 |
Joergen Johansson |
Anordning vid tv-system
|
|
US5550825A
(en)
*
|
1991-11-19 |
1996-08-27 |
Scientific-Atlanta, Inc. |
Headend processing for a digital transmission system
|
|
SE9301236L
(sv)
*
|
1993-04-15 |
1994-10-16 |
Erik Rickard Soederqvist |
Sätt och anordning för koordinerad kodning och avkodning av en TV-signal eller annan meddelande signal
|
|
US5491748A
(en)
*
|
1994-03-01 |
1996-02-13 |
Zenith Electronics Corporation |
Enhanced security for a cable system
|
|
FR2721160B1
(fr)
*
|
1994-06-13 |
1996-08-14 |
Telediffusion Fse |
Procédé d'embrouillage et de désembrouillage de programmes de télévision multiplexée et dispositifs correspondants.
|
|
WO1996008111A1
(en)
*
|
1994-09-07 |
1996-03-14 |
Yee Kong Ng |
Apparatus and methods for scrambling and unscrambling video signals
|
|
US6118492A
(en)
*
|
1996-08-14 |
2000-09-12 |
Starsight Telecast, Inc. |
Guide system and method of operation
|
|
US6169584B1
(en)
*
|
1997-12-05 |
2001-01-02 |
Motorola, Inc. |
Automatic modulation control of sync suppressed television signals
|
|
US20100030838A1
(en)
*
|
1998-08-27 |
2010-02-04 |
Beepcard Ltd. |
Method to use acoustic signals for computer communications
|
|
IL127569A0
(en)
|
1998-09-16 |
1999-10-28 |
Comsense Technologies Ltd |
Interactive toys
|
|
US6607136B1
(en)
|
1998-09-16 |
2003-08-19 |
Beepcard Inc. |
Physical presence digital authentication system
|
|
US7334735B1
(en)
|
1998-10-02 |
2008-02-26 |
Beepcard Ltd. |
Card for interaction with a computer
|
|
US8019609B2
(en)
*
|
1999-10-04 |
2011-09-13 |
Dialware Inc. |
Sonic/ultrasonic authentication method
|
|
KR100346419B1
(ko)
*
|
2000-02-10 |
2002-08-01 |
삼성전자 주식회사 |
멀티 튜너방식 텔레비젼 수신장치 및 시청제한방법
|
|
US7146008B1
(en)
*
|
2000-06-16 |
2006-12-05 |
Intel California |
Conditional access television sound
|
|
US7203311B1
(en)
*
|
2000-07-21 |
2007-04-10 |
The Directv Group, Inc. |
Super encrypted storage and retrieval of media programs in a hard-paired receiver and storage device
|
|
FR2812949B1
(fr)
*
|
2000-08-11 |
2003-04-25 |
Thomson Csf |
Procede et dispositif de codage/decodage de la repartition de puissance sur les sorties d'un systeme
|
|
US9219708B2
(en)
*
|
2001-03-22 |
2015-12-22 |
DialwareInc. |
Method and system for remotely authenticating identification devices
|
|
US7409562B2
(en)
|
2001-09-21 |
2008-08-05 |
The Directv Group, Inc. |
Method and apparatus for encrypting media programs for later purchase and viewing
|
|
US20050147247A1
(en)
*
|
2003-11-14 |
2005-07-07 |
Westberg Thomas E. |
Interactive television systems having POD modules and methods for use in the same
|
|
US9325944B2
(en)
|
2005-08-11 |
2016-04-26 |
The Directv Group, Inc. |
Secure delivery of program content via a removable storage medium
|
|
US8095466B2
(en)
|
2006-05-15 |
2012-01-10 |
The Directv Group, Inc. |
Methods and apparatus to conditionally authorize content delivery at content servers in pay delivery systems
|
|
US8996421B2
(en)
|
2006-05-15 |
2015-03-31 |
The Directv Group, Inc. |
Methods and apparatus to conditionally authorize content delivery at broadcast headends in pay delivery systems
|
|
US8001565B2
(en)
|
2006-05-15 |
2011-08-16 |
The Directv Group, Inc. |
Methods and apparatus to conditionally authorize content delivery at receivers in pay delivery systems
|
|
US7992175B2
(en)
|
2006-05-15 |
2011-08-02 |
The Directv Group, Inc. |
Methods and apparatus to provide content on demand in content broadcast systems
|
|
US8775319B2
(en)
|
2006-05-15 |
2014-07-08 |
The Directv Group, Inc. |
Secure content transfer systems and methods to operate the same
|
|
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
|