| 4268859 |
High-security cable television access system |
| May-19-1981 |
A poach-resistant system enabling cable television subscribers to receive upon request certain programs otherwise unavailable (i.e., "secure") while precluding such reception by non-requesting subscribers... |
| 4161751 |
High-security cable television access system |
| Jul-17-1979 |
A poach-resistant system enabling cable television subscribers to receive upon request certain programs otherwise unavailable (i.e., "secure") while precluding such reception by non-requesting subscribers... |
| 4905280 |
High security videotext and videogame system |
| Feb-27-1990 |
A pay per use system allows the broadcast of television, videotext, and videogame programming all in the same system. The programming is broadcast in scrambled form with a broadcast signal imbedded in... |
| 4295155 |
Gray scale sync video processing system |
| Oct-13-1981 |
The blacker-than-black sync pulse of a standard video signal is replaced by a gray scale sync to increase picture signal, permit audio multiplexing and allow security phase inversion by means of encoder... |
| 4600921 |
Full-field teletext system with dynamic addressability |
| Jul-15-1986 |
The present invention permits a teletext system operator to adjust subscriber access to service levels individually by adjusting a code at the head end station. A head-end station transmits a tier description... |
| 6829368 |
Establishing and interacting with on-line media collections using identifiers in media signals |
| Dec-7-2004 |
Media objects are transformed into active, connected objects via identifiers embedded into them or their containers. In the context of a user's playback experience, a decoding process extracts the identifier... |
| 6711261 |
Enhancing concealment in the presence of fine mistuning for various TV scrambling techniques |
| Mar-23-2004 |
An improved method and apparatus for maintaining concealment for a scrambled signal when frequency pre-emphasis is used to defeat the scrambling. The pre-emphasis may be synthesized with high pass or peaking... |
| 5491748 |
Enhanced security for a cable system |
| Feb-13-1996 |
A cable television plant scrambling system incorporates video inversion with a pair of mode signals included in the vertical blanking interval of a scrambled television signal for identifying the proper... |
| 6381697 |
Electronic equipment, method of controlling operation thereof and controlling method |
| Apr-30-2002 |
A method and apparatus for controlling communication between components connected to a bus. All equipment manufacturers may use every application available on each connected apparatus by using a unique... |
| 4389671 |
Digitally-controlled analog encrypton |
| Jun-21-1983 |
An apparatus for scrambling a television signal in which horizontal lines of the transmitted television picture are selectively inverted in accordance with the state of a pseudorandom noise generator.... |
| 4710921 |
Digital signal transmitting system |
| Dec-1-1987 |
A digital signal transmitting system includes a digital signal generator, such as, an A/D (analog-to-digital) converter, for producing digital information signals representing music or data, and a control... |
| 7012932 |
Digital broadcast data receiving apparatus |
| Mar-14-2006 |
A digital broadcast data receiving apparatus comprises a plurality of broadcast data receiving units for receiving digital broadcast data supplied from a plurality of digital broadcast data sources, respectively... |
| 6690797 |
Descrambling device for the use of several conditional access sub-systems |
| Feb-10-2004 |
The descrambling device comprises hardware resources (1) and first memory zones (CA1, CA2, . . . , CAn) to store at least two different access control codes for controlling the hardware resources. The... |
| 5878135 |
Decoding system for processing encrypted broadcast, cable or satellite video data |
| Mar-2-1999 |
A decoder excludes an encryption code or key from decrypted or non-decrypted program output data. Decrypted program representative data is generated from an input datastream containing encrypted program... |
| 6219422 |
Data transmitting apparatus, receiving apparatus, and data transmission and reception system |
| Apr-17-2001 |
Video and audio data of a plurality of received programs and a common information ECM are recorded to a recording medium. A recording position of the program is written on a management table. When reproducing... |
| 4723283 |
Data transmission system |
| Feb-2-1988 |
This invention relates to a data transmission system in which information data is shuffled and the data service is received by those who paid the charges. According to this data transmission system, a... |
| 6650256 |
Data processing apparatus, data processing method, program, program recording medium, embedded data, and data recording medium |
| Nov-18-2003 |
A data processing apparatus for coding data includes a coder for generating third data by coding first data and second data. A decoding-information generator generates decoding information, the third data... |
| 4386416 |
Data compression, encryption, and in-line transmission system |
| May-31-1983 |
An in-line data compression system which reduces the number of binary bits required to transmit a given text or similar message over a data network such as Telex or TWX. The compression unit can transmit... |
| 5258998 |
Data communication apparatus permitting confidential communication |
| Nov-2-1993 |
A data communication apparatus, such as a facsimile machine, in which the data of a page is transmitted in plural blocks, and the sending unit designates the blocks to be released as output. In this manner... |
| 4768228 |
Data acquisition device |
| Aug-30-1988 |
An apparatus for receiving, detecting and storing a series of discrete bits of data transmitted in conjunction with a video signal wherein only a portion of the transmitted data is read and saved. |
| 4803725 |
Cryptographic system using interchangeable key blocks and selectable key fragments |
| Feb-7-1989 |
A cryptographic system is used for the secure transmission of digitized signals to a plurality of receivers. At the transmission end, a key consisting of two blocks, each including a plurality of key fragments,... |
| 5151782 |
Control system for satellite delivered pay-per-view television system |
| Sep-29-1992 |
In a system including an originating source for providing multiple television programs to one or more local cable television systems for their distribution on a pay-per-view basis, data processing equipment... |
| 5053884 |
Control apparatus for selectively inhibiting looking/listening in CATV terminal equipment |
| Oct-1-1991 |
A control apparatus for selectively inhibiting looking/listening in CATV terminal equipment is provided in which an identity number may be inputted for allowing looking/listening even when a changeover... |
| 5634849 |
Content-on-demand interactive video method and apparatus |
| Jun-3-1997 |
A method and system for providing a player of a video game an automatically customized version of an interactive video game responsive to the player's content preferences in at least one category of possibly... |
| 4617597 |
Compatible color television with regenerable signals |
| Oct-14-1986 |
Novel means are disclosed for conditioning a standard color-television composite signal, such as the NTSC composite, so that pictorial information is represented according to Nyquist samples which are... |
| 4568966 |
Compatible color television with regenerable signals |
| Feb-4-1986 |
Novel means are disclosed for conditioning a standard color-television composite signal, such as the NTSC composite, so that pictorial information is represented according to Nyquist samples which are... |
| 4648122 |
Community antenna television communication system |
| Mar-3-1987 |
A CATV system in which first and second terminal units are provided, connected in series via a transmission line, whereby the first transmission unit effects communiction with a control center while the... |
| 4890321 |
Communications format for a subscription television system permitting transmission of individual text messages to subscribers |
| Dec-26-1989 |
A subscription television system in which individual decoders are enabled to receive individually addressed messages is disclosed. The composite signal, including video and teletext, also comprises addressed... |
| 5345505 |
Coding system for a data signal |
| Sep-6-1994 |
A system for scrambling and descrambling complex data signals, such as video signals, employs a system for encoding the decoding information, in the form of two security keys, directly onto the scrambled... |
| 4336554 |
Code signal blanking apparatus |
| Jun-22-1982 |
A code signal blanking apparatus comprising a switching means operative during a given period of a vertical blanking period of a television signal and a reference level setting means for producing an output... |
| 4961109 |
Chargeable program receiving limit setting system in two-way cable television system |
| Oct-2-1990 |
A CATV television system in which a subscriber can only charge a maximum number of events before the central facility polls the subscriber's terminal unit for charged events. The subscriber's terminal... |
| 5715315 |
CATV systems |
| Feb-3-1998 |
A CATV system including a CATV network, multiplicity of subscriber units, apparatus for transmitting over said CATV network encrypted information individually addressed to a subscriber unit and apparatus... |
| 5414773 |
CATV systems |
| May-9-1995 |
A CATV system including a CATV network, a multiplicity of subscriber units, apparatus for transmitting over said CATV network encrypted information individually addressed to a subscriber unit and apparatus... |
| 4461032 |
CATV Service controller |
| Jul-17-1984 |
A remotely located and controlled programming controller for a cable-compatible television receiver is disclosed. Cable head end-generated control signals are provided by wire to the cable TV controller... |
| 5497420 |
Cable TV system using passwords |
| Mar-5-1996 |
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... |
| 4623920 |
Cable network data transmission system |
| Nov-18-1986 |
A system for providing television, information and data signals via a transmission network to selected subscribers, to groups of subscribers, or to all subscribers connected in common to the transmission... |
| 6490356 |
Broadcast receiving system comprising a computer and a decoder |
| Dec-3-2002 |
A combined computer and decoder system for receiving broadcast digital data transmissions, characterized in that the decoder (2020) comprises a routing means (2032), broadcast digital data received at... |
| 4868866 |
Broadcast data distribution system |
| Sep-19-1989 |
A broadcast data distribution system collects, edits, verifies, formats and distributes real-time (dynamic) and non-real-time (static) data. A central database is maintained and updated continuously. Data... |
| 5699104 |
Broadcast channel lock system |
| Dec-16-1997 |
A broadcasting channel lock system including a broadcasting device for transmitting a broadcasting signal via one or more of a plurality of channels, and a receiving device for receiving the broadcasting... |
| 5864621 |
Broadband television scrambling and descrambling system |
| Jan-26-1999 |
A multichannel television access control system is disclosed wherein processing of the broadband signal is performed by gated coherent RF injection on a plurality of channels, thereby effecting selective... |
| 4162483 |
Bilateral master station-plural satellite station signalling apparatus |
| Jul-24-1979 |
A bilateral digital signalling network couples a master station and plural remote, or satellite stations via a common communications link--as by way of an MATV coaxial cable. Any data/control signals may... |
| 5661802 |
Auxiliary power and telephone signal distribution system |
| Aug-26-1997 |
A telephone and auxiliary power distribution system in a building has a flexible multi-conductor signal and power distribution cable; which cable originates from a central signal & power management facility... |
| 6304660 |
Apparatuses for processing security documents |
| Oct-16-2001 |
A security document processing apparatus is provided having a feed path for receiving documents and at least one imaging assembly for capturing image data from documents received in the apparatus. The... |
| 5194947 |
Apparatus for tapping CATV signals from a cable and for controlling the distribution |
| Mar-16-1993 |
In order to facilitate the installation of off-premises equipment which distributes CATV signals from a distribution cable to subscribers and to allow different subscribers to receive different classes... |
| 4700388 |
Apparatus for scrambling a television signal |
| Oct-13-1987 |
An apparatus for scrambling or encoding a television signal by inverting the latter signal in accordance with a control signal having a predetermined code pattern comprises a detector circuit for detecting... |
| 6487720 |
Apparatus for receiving digital broadcast signal and apparatus for recording and reproducing digital broadcast information included in the digital broadcast signal |
| Nov-26-2002 |
When a received broadcast signal is received in a digital broadcast signal receiving apparatus, an entitlement management message EMM representing broadcast-watching enabling information is extracted from... |
| 4635113 |
Apparatus for descrambling transmitted scrambled television signals |
| Jan-6-1987 |
This invention relates to an apparatus for descrambling scrambled television signals including a scrambled video signal having a first scrambling pattern, a scrambled control signal having a second scrambling... |
| 5590200 |
Apparatus and method for securing communication systems |
| Dec-31-1996 |
A hacking prevention system and method wherein the descrambler receives a data stream including a series of authorization packets and a series of corresponding offset values. A random number is generated... |
| 4829589 |
Anti-tapping system |
| May-9-1989 |
The system relates to a system for preventing unauthorized viewing of CATV etc. wherein each terminal is provided with a terminal own address generator and an auxiliary address generator. The center station... |
| 5420923 |
Addressed messaging in a cable television system |
| May-30-1995 |
A method of transmitting addressed messages to subscribers comprises the steps of defining the group or individual subscriber to be addressed, creating the message, assigning the message to the individual... |
