| 6249532 |
Interactive chargeable communication system with billing system therefor |
| Jun-19-2001 |
A billing system for use in a chargeable program broadcasting is capable of reliably billing a subscriber for program reception while preventing unauthorized reception thereof. A receiving terminal includes... |
| 6148400 |
Apparatus and method for establishing a crytographic link between elements of a system |
| Nov-14-2000 |
A hierarchical cryptographic system has distributed authority among different classes of units in the system. The system may comprise a trusted authority, a first unit authorized by the trusted authority... |
| 6105134 |
Verification of the source of program information in a conditional access system |
| Aug-15-2000 |
A cable television system provides conditional access to services. The cable television system includes a headend from which service "instances", or programs, are broadcast and a plurality of set top units... |
| 6092201 |
Method and apparatus for extending secure communication operations via a shared list |
| Jul-18-2000 |
A method and apparatus for extending secure communication operations via shared lists is accomplished by creating a shared list in accordance with authorization parameters by one user and subsequently... |
| 6073235 |
Private broadcast communication system and method for private broadcast communication over a wired or wireless network |
| Jun-6-2000 |
A private broadcasting system includes communication terminals which are coupled to both a broadcasting network and point-to-point network. A private broadcasting device included in the broadcasting system... |
| 6055315 |
Distributed scrambling method and system |
| Apr-25-2000 |
A scrambling system for a cable television system in which a group of channel frequencies are reused over a plurality of service areas includes an access controller, an encoder and a plurality of simplified... |
| 6035037 |
System for processing a video signal via series-connected high speed signal processing smart cards |
| Mar-7-2000 |
A system processes a video signal that includes a plurality of signal components representing respective ones of a plurality of video programs such as various pay-TV programs. Each of the signal components... |
| 6035038 |
Conditional access system and smartcard allowing such access |
| Mar-7-2000 |
The conditional access system of the present invention allows a service provider to supply services, which may be scrambled by a control word, only to those users who have acquired entitlements to these... |
| 6026164 |
Communication processing system with multiple data layers for digital television broadcasting |
| Feb-15-2000 |
Video signals are encrypted so that only the privileged viewers can watch them. A layer coding unit divides video signals into two layers and encodes each layer. An encrypting unit encrypts the low-quality... |
| 6025869 |
Video viewing supervision system |
| Feb-15-2000 |
A TV/video viewing supervision system that enables a supervisor, typically a parent controlling children's viewing, to selectably program the hours, programs and/or channels of television, VCR, cable TV,... |
| 6021197 |
Method and apparatus for controlling the operation of a signal decoder in a broadcasting system |
| Feb-1-2000 |
In a method and apparatus for controlling the operation of a signal decoder in a broadcasting system, a broadcast signal and an encrypted signature are generated and the signature is added to the signal.... |
| 6005598 |
Apparatus and method of transmitting broadcast program selection control signal and controlling selective viewing of broadcast program for video appliance |
| Dec-21-1999 |
An apparatus and method for transmitting a broadcast program selection control signal, and controlling selective viewing of a broadcast program for a video appliance in which a viewing-restriction grade... |
| 6002694 |
Interactive chargeable communication system with billing system therefor |
| Dec-14-1999 |
A billing system for use in a chargeable program broadcasting is capable of reliably billing a subscriber for program reception while preventing unauthorized reception thereof. A receiving terminal includes... |
| 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)... |
| 5978649 |
Method and apparatus for dynamic conditional channel authorization in a broadcast system |
| Nov-2-1999 |
In a broadcast system for transmitting a communication signal to a plurality of receiver units, each receiver unit having associated therewith respective authorization information identifying subsets of... |
| 5978479 |
Descrambler |
| Nov-2-1999 |
A descramble section extracts required information for descrambling transmitted together with TV signals and converts scrambled signals to ordinary TV signals in response to input control signals. A microcomputer... |
| 5963645 |
Reception apparatus, reception method, transmission apparatus, transmission method, transmission-reception apparatus, and transmission-reception method |
| Oct-5-1999 |
A reception apparatus for receiving a broadcast signal which is transmitted from a transmitting side and which includes personalized information comprising data representing information about specific... |
| 5930361 |
Video inversion detection apparatus and method |
| Jul-27-1999 |
An apparatus/method for descrambling a TV cable system transmission that been scrambled using an unknown scrambling algorithm. Insertion apparatus inserts a known visual/electrical characteristic into... |
| 5923755 |
Multi-service data receiver architecture |
| Jul-13-1999 |
A flexible architecture for a digital data receiver including a demultiplexer is provided which allows modular addition of data processors with low complexity and minimal memory requirements. The demultiplexer... |
| 5920626 |
Analog/digital system for television services |
| Jul-6-1999 |
A combined IRD scrambler/modulator is provided in a headend. A service provider transmits a digital program signal in a digital data stream to a headend which distributes analog program signal to at least... |
| 5903649 |
Method for establishing a common code for authorized persons through a central office |
| May-11-1999 |
To provide sufficient security, a method, based on the use of a code-controlled one-way function with a threshold scheme, is described. N shadows s.sub.i are derived from the personal code of each of n... |
| 5870472 |
Dynamic relocation of the service data channel |
| Feb-9-1999 |
A method and apparatus for preventing unauthorized descrambling of cable programming includes selective relocation of the service data channel within the vertical blanking interval thereby preventing unauthorized... |
| 5862219 |
Cable television setback decoder automatic control |
| Jan-19-1999 |
A setback decoder monitors the IF output from a cable-ready receiver and automatically provides a descrambled audio/video signal back to the receiver for output to the subscriber. When the receiver is... |
| 5832083 |
Method and device for utilizing data content |
| Nov-3-1998 |
The present invention provides a data content utilizing device having data storing section for storing information obtained by encoding data contents and content identification information specifying the... |
| 5828402 |
Method and apparatus for selectively blocking audio and video signals |
| Oct-27-1998 |
A method and apparatus block the reception of television programming which meets specified criteria. Data packets describing television programming are broadcast with the television signal. The data packets... |
| 5802063 |
Conditional access filter as for a packet video signal inverse transport system |
| Sep-1-1998 |
Apparatus in a receiver, for processing transmitted entitlement control information, includes a packet transport processor for selecting signal packets having payloads containing a conditional access payload... |
| 5794115 |
Pay broadcasting system having a broadcasting station and a charging center |
| Aug-11-1998 |
A system for the so-called "pay-per-program" is provided for viewing individual program on pay basis without signing a comprehensive contract. In response to a request for viewing a pay program executed... |
| 5774548 |
Digital broadcast transmitting and receiving system and transmitting and receiving apparatus thereof |
| Jun-30-1998 |
An arrangement to automatically change between a scrambled digital data output and descrambled digital data output of a receiver by inserting a control signal conforming to a program provider's policy... |
| 5764763 |
Apparatus and methods for including codes in audio signals and decoding |
| Jun-9-1998 |
Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code... |
| 5754651 |
Processing and storage of digital data and program specific information |
| May-19-1998 |
A program representative packetized datastream is generated from an input packetized datastream representing a plurality of programs. Program content packets comprising a desired program selected from... |
| 5751806 |
Audio information dissemination using various transmission modes |
| May-12-1998 |
A system and method of information dissemination that permits the user to listen to the specific content of information when and where he or she wants to. A radio or television receiver system receives... |
| 5751335 |
Viewing restricting method and viewing restricting apparatus |
| May-12-1998 |
A method and apparatus for securely restricting the viewing of television programs. When a television program has been received along with rating data associated with a rating of the television program;... |
| 5748783 |
Method and apparatus for robust information coding |
| May-5-1998 |
A digital signal is imperceptibly embedded into an input source signal, such as an image or video signal, to produce an encoded (sometimes termed "watermarked") signal. The principle of quasi-rotational... |
| 5748763 |
Image steganography system featuring perceptually adaptive and globally scalable signal embedding |
| May-5-1998 |
An identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The carrier... |
| 5748732 |
Pay TV method and device which comprise master and slave decoders |
| May-5-1998 |
A master decoder for use with a master smart card and at least one slave decoder for use with a slave smart card are arranged in a pay tv system, wherein the master decoder receives slave entitlement messages... |
| 5745482 |
Repeating device |
| Apr-28-1998 |
In a repeating device for sending chargeable satellite broadcasting received through a BS antenna to a connected cable, a scrambled video signal and an audio signal are separated from each other by a separation... |
| 5742681 |
Process for the broadcasting of programmes with progressive conditional access and separation of the information flow and the corresponding receiver |
| Apr-21-1998 |
Process for the broadcasting of programmes with progressive conditional access and separation of the information flow, as well as the corresponding receiver, In order to form the elementary flow, groups... |
| 5734853 |
Set top terminal for cable television delivery systems |
| Mar-31-1998 |
A viewer interface for a television program delivery system is described. The innovation relates to methods and devices for viewer pathways to television programs. Specifically, the interface involves... |
| 5710815 |
Encoder apparatus and decoder apparatus for a television signal having embedded viewer access control data |
| Jan-20-1998 |
An encoding apparatus and an associated decoding apparatus for a television signal having embedded viewer access control data. A program category code is inserted into a television signal by the encoding... |
| 5699429 |
Packet TV program component detector |
| Dec-16-1997 |
Apparatus for selecting predetermined ones of packets of signal components, from a signal stream of packets includes a control device, responsive to user selection and a transmitted program guide, for... |
| 5689442 |
Event surveillance system |
| Nov-18-1997 |
A surveillance system operable to capture images and sounds concerning events for storage in a random access data store. A data management functionality is provided to dynamically manage storage of information... |
| 5680457 |
System for updating an authorization memory |
| Oct-21-1997 |
A subscriber terminal includes a digital conditional access module receiving a transport bitstream comprising a plurality of multiplexed conditional access and product packets. Selected ones of the conditional... |
| 5675647 |
Cable TV system using passwords |
| Oct-7-1997 |
This invention relates to a method of distributing signals to valid subscribers comprised of storing subscriber terminal valid identification codes at a central station, broadcasting promotions of services... |
| 5671276 |
Method and apparatus for impulse purchasing of packaged information services |
| Sep-23-1997 |
Impulse purchasing is provided for packages of services offered to consumers via an information network. A plurality of services is offered for individual purchase on an impulse basis via a user terminal... |
| 5640452 |
Location-sensitive decryption of an encrypted message |
| Jun-17-1997 |
A system for assuring the location integrity of a decryption chip used to receive and decrypt encrypted signals ES received from an encrypted signal source. The decryption chip operates in association... |
| 5627892 |
Data security scheme for point-to-point communication sessions |
| May-6-1997 |
Secure point-to-point communication of information to specific terminals is provided via a shared network. Far in advance of the establishment of an information session with a particular one of a plurality... |
| 5615265 |
Process for the transmission and reception of conditional access programs controlled by the same operator |
| Mar-25-1997 |
Process for the transmission and reception of conditional access programs controlled by the same operator. According to the invention, specific check words (MCSi) are formed for various programs of the... |
| 5613003 |
Packet video signal inverse transport processor memory address circuitry |
| Mar-18-1997 |
In an inverse transport processor, program component packet payloads of respective program components are multiplexed to a memory data input port and directed to mutually exclusive areas of random access... |
| 5606611 |
Receiving station management apparatus |
| Feb-25-1997 |
In a transmitting unit, receiving stations are formed into a plurality of groups, and information associated with the right to receive a broadcasting service is rewritten in units of groups by converting... |
| 5602920 |
Combined DCAM and transport demultiplexer |
| Feb-11-1997 |
A combined condition access and transport demultiplexer circuit comprises a decryption device receiving a demodulated transport bitstream including a plurality of multiplexed conditional access (CA) and... |
