| 5488658 |
Video signal scrambling and descrambling apparatus |
| Jan-30-1996 |
A common circuit is used for scrambling and descrambling video signals. A memory stores key data. During scrambling the output of the memory is transmitted to a read address counter through an address... |
| 6850909 |
Using smartcards to enable probabilistic transactions on an untrusted device |
| Feb-1-2005 |
The present invention permits a user to conduct remote transactions without a network while using an untrusted computing device, such as a hand-held personal digital assistant or a laptop computer. The... |
| 6496808 |
Using smartcards to enable probabilistic transaction on an untrusted device |
| Dec-17-2002 |
The present method permits a user to conduct remote transactions without a network while using an untrusted computing device, such as a hand-held personal digital assistant or a laptop computer. The computing... |
| 6807635 |
Using digital signatures to validate trading and streamline settlement of financial transaction workflow |
| Oct-19-2004 |
One embodiment of the present invention provides a system that uses digital signatures in a novel configuration to perform validations to facilitate a trade. This system operates by receiving a quote related... |
| 5621793 |
TV set top box using GPS |
| Apr-15-1997 |
An integrated receiver decoder (IRD), commonly called a set-top box, has a global positioning system (GPS) receiver. The GPS receiver checks to see if the IRD is at an authorized location and allows descrambling... |
| 5991400 |
Time-shifted conditional access |
| Nov-23-1999 |
In a conditional access system, transmitted information is recorded in a scrambled form SV. Accordingly, any access to the recorded information SV is subject to the condition that proper control word(s)... |
| 5825876 |
Time based availability to content of a storage medium |
| Oct-20-1998 |
A service methodology for time based availability to content, such as, movies, music, games, information and the like, provisioned on a storage medium whereby revenue may be generated for premier and pay-per-use... |
| 4337483 |
Text video-transmission system provided with means for controlling access to the information |
| Jun-29-1982 |
A text video-transmission system comprising an information emitting center and receiving stations, the emitting center comprising encryption means using an operating key, each receiving station comprising... |
| 4354201 |
Television system with access control |
| Oct-12-1982 |
A television system with access control comprises a transmitter and receis. The transmitter comprises a video signal and sound signal formation circuit, means for transmitting these signals and a jamming... |
| 6434535 |
System for prepayment of electronic content using removable media and for prevention of unauthorized copying of same |
| Aug-13-2002 |
A system and method for distribution of electronic content over a network infrastructure and compensation of vendors of such data using prepaid media that includes a client device for operation by a user... |
| 6708157 |
System for controlling the distribution and use of digital works using digital tickets |
| Mar-16-2004 |
A system for controlling the distribution and use of digital works using digital tickets. In the present invention, a "digital ticket" is used to entitle the ticket holder to exercise some usage right... |
| 5481609 |
System for controlling access to broadcast transmissions |
| Jan-2-1996 |
A system for controlling access to broadcast transmissions including a transmitter having a transmission encoder for scrambling the broadcast, a multiplicity of subscriber receivers, each having an identical... |
| 7016496 |
System and method for storing and accessing digital media content using smart card technology |
| Mar-21-2006 |
A system and method for delivering digital media content to a user over a network is disclosed. The illustrative embodiment of the present invention enables multiple types of electronic devices to access... |
| 6055314 |
System and method for secure purchase and delivery of video content programs |
| Apr-25-2000 |
A system and method for secure purchase and delivery of video content programs over various distribution media, including distribution networks and digital video disks, includes an integrated circuit card... |
| 5367571 |
Subscriber terminal with plug in expansion card |
| Nov-22-1994 |
A subscriber terminal with a plug-in expansion card provides for memory expansion and security renewal. The subscriber terminal has a memory control bus including data, address, and control lines which... |
| 6868408 |
Security systems and methods applicable to an electronic monetary system |
| Mar-15-2005 |
An electronic-monetary system having (1) banks or financial institutions that are coupled to a money generator device for generating and issuing to subscribing customers electronic money including electronic... |
| 4600942 |
Secure coding and decoding system and method for television program signals |
| Jul-15-1986 |
Parts of a composite video signal, such as segments of each horizontal scan line, are stored in analog storage devices and retrieved therefrom in a cyclic manner to rearrange them and thereby encode the... |
| 5117458 |
Secret information service system and method |
| May-26-1992 |
An information service system including a plurality of receiving stations and information service facilities. The information service facilities include a memory circuit which stores beforehand a distribution... |
| 5272753 |
Scrambling apparatus |
| Dec-21-1993 |
A scrambling apparatus includes an IC card connector for receiving an IC card in which at least either scramble control information or unscramble control information is written in advance, a reading circuit... |
| 4636852 |
Scrambling and descrambling of television signals for subscription TV |
| Jan-13-1987 |
A scrambled TV signal is provided by adding thereto a signal having an amplitude which changes pseudorandomly in successive increments of time, the duration of each of which is much less than the horizontal... |
| 5917915 |
Scramble/descramble method and apparatus for data broadcasting |
| Jun-29-1999 |
A transmitter for transmitting news data via satellite and which includes an information storage unit for storing news data, an information scramble processing unit for scrambling the news data using a... |
| 5355409 |
Scramble codec and a television receiver incorporating the same |
| Oct-11-1994 |
A scramble codec comprises a latch means for holding an ID number for securing television or other communication data, a pair of memories which can be alternately loaded with input communication data signals... |
| 4903297 |
Restricted access television transmission system |
| Feb-20-1990 |
A Television Signal Transmission Security System which provides a higher degree of security then previously possible by utilizing encoding and decoding technology which effectively prevents pirating by... |
| 4825467 |
Restricted access television transmission system |
| Apr-25-1989 |
A Television Signal Transmission Security System which provides a higher degree of security then previously possible by utilizing encoding and decoding technology which effectively prevents pirating by... |
| 5959948 |
Recording and reproducing apparatus |
| Sep-28-1999 |
A disk-shaped recording medium includes a transparent substrate, and an optical recording layer formed on the transparent substrate. A light source emits light. An optical head is operative for applying... |
| 5144662 |
Public communication system comprising distributed stations, and station and sub-station for use in such a communication system |
| Sep-1-1992 |
A public communication system for encrypted audio/video information has various selective entitlement organizations with respect to its distributed receiver station. Such receiver station comprises one... |
| 4980912 |
Public communication system comprising distributed stations, and station and sub-station for use in such a communication system |
| Dec-25-1990 |
A public communication system for encrypted audio/video information has various selective entitlement organizations with respect to its distributed receiver station. Such receiver station comprises one... |
| 4947428 |
Process for the broadcasting and reception of access title control messages |
| Aug-7-1990 |
According to the invention, the control messages are constituted by a general addressing message (GCM), followed by shared addressing messages (SACM). The message (GCM) contains all the information common... |
| 5134656 |
Pre-payment television system using a memory card associated with a decoder |
| Jul-28-1992 |
According to the invention, on the emitter side, a number generator (10) delivers a random code (XAL) which is sent to the input of a master card (11) which ciphers such code according to a predetermined... |
| 5521979 |
Packet video signal inverse transport system |
| May-28-1996 |
An inverse transport processor system for a TDM packet signal TV receiver includes apparatus for selectively extracting desired payloads of program component data and coupling this data to a common buffer... |
| 6975725 |
Method for standardizing the use of ISO 7816 smart cards in conditional access systems |
| Dec-13-2005 |
A conditional access system and method are disclosed allowing the use of a standard smart card. A computing resource configured to run the conditional access protocol has a smart card interface and a software... |
| 5991399 |
Method for securely distributing a conditional use private key to a trusted entity on a remote system |
| Nov-23-1999 |
Secure distribution of a private key to a user's application program (also called a "trusted player" such as a DVD player or CD-ROM player) with conditional access based on verification of the trusted... |
| 6804357 |
Method and system for providing secure subscriber content data |
| Oct-12-2004 |
A personalized smart card stores therein public and private cryptography keys stored which are used to securely request and receive subscriber content data from a service provider, utilizing a remote control... |
| 5511125 |
Method and device for the utilization of electrical signals |
| Apr-23-1996 |
An interface is made for a device for the exploitation of electrical signals between a receiver of this device and a device for the exploitation of these signals. The interface is capable of sending, alternatively,... |
| 5588058 |
Method and device for scrambling and descrambling of a specific television broadcast |
| Dec-24-1996 |
A receiving device comprises a pseudo-random generator (18) initialized by a control word (CW) and a memory card reader (19). In accordance with the invention, it reads control word in a table of numbers... |
| 6959087 |
Method and apparatus for transmitting encryption-resultant information and decrypting information |
| Oct-25-2005 |
An information signal is transmitted. The information signal contains 1) encryption-resultant information, 2) an error correction code signal, and 3) decrypting information. The error correction code signal... |
| 6928419 |
Method and apparatus for repackaging portions of digital works as new digital works |
| Aug-9-2005 |
A method and system for creating a new digital work from one or more existing digital works having parts. A first part of a digital work has first usage rights associated therewith, the first usage rights... |
| 5818934 |
Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver |
| Oct-6-1998 |
A method for providing a secure interface between a decryption engine and a system decoder of a digital receiver, e.g., an MPEG-2 digital television receiver. The system decoder receives an encrypted bitstream... |
| 6289455 |
Method and apparatus for preventing piracy of digital content |
| Sep-11-2001 |
A secure cryptographic rights unit for cryptographically regulating access to digital content includes an interface control processor and a specialized cryptographic unit that protects access to a memory.... |
| 4595950 |
Method and apparatus for marking the information content of an information carrying signal |
| Jun-17-1986 |
An information signal (INF) which is transmitted in coded form (CINF) from a signal source (RC) to a signal receiver (4, 5) is decoded at the receiver and at the same time marked (MINF) by the introduction... |
| 5598471 |
Method and apparatus for encoding and decoding of audio transmission signals |
| Jan-28-1997 |
A system for encoding and decoding an audio transmission signal comprises: (a) an encoder with a frequency-varying means to vary the carrier frequency of the audio signal according to an encryption algorithm;... |
| 5461674 |
Method and apparatus for controlling playback of recorded HDTV signals |
| Oct-24-1995 |
An HDTV receiver for restricting playback of HDTV signals encrypted with a level 1 encryption. The receiver includes an output port and an input port between which an external, controllable level 1 decryption... |
| 6859427 |
Medium, apparatus, and method related to encryption resultant information |
| Feb-22-2005 |
A disk-shaped recording medium includes a transparent substrate, and an optical recording layer formed on the transparent substrate. A light source emits light. An optical head is operative for applying... |
| 6674703 |
Medium, apparatus, and method related to encryption resultant information |
| Jan-6-2004 |
A disk-shaped recording medium includes a transplant substrate, and an optical recording layer formed on the transparent substrate. A light source emits light. An optical head is operative for applying... |
| 6243330 |
Medium, apparatus, and method related to encryption resultant information |
| Jun-5-2001 |
A disk-shaped recording medium includes a transparent substrate, and an optical recording layer formed on the transparent substrate. A light source emits light. An optical head is operative for applying... |
| 5325431 |
Looking and listening fee collection system for pay broadcasting |
| Jun-28-1994 |
A looking and listening fee collection system for satellite broadcasting of this invention is designed to collect looking and listening fees for satellite broadcasting by using balances prestored in an... |
| 5351294 |
Limited broadcast system |
| Sep-27-1994 |
A method and apparatus for carrying out limited encipherment broadcast by generating a cipher key obtained from destination information added to service information are provided. An information service... |
| 6754347 |
Input/output unit, input/output method, and receiving unit |
| Jun-22-2004 |
A switching portion of an IRD supplies a non-descrambled TS (transport stream) received from a front end portion or a descrambled TS received from a descrambler to a DVCR connected to an IEEE 1394 interface.... |
| 5111504 |
Information processing apparatus with replaceable security element |
| May-5-1992 |
A field upgradeable security system deciphers signals received from a communication network. An information processor includes a receptacle for receiving a replaceable security element. The replaceable... |
| 5237610 |
Independent external security module for a digitally upgradeable television signal decoder |
| Aug-17-1993 |
A decoder for descrambling encoded satellite transmissions comprises an internal security module and a resplaceable security module. The program signal is scrambled with a key and then the key itself is... |
