Matches 51 - 100 out of 109 < 1 2 3 >
Match Document Document Title
5834989 Circuitry for use with coaxial cable distribution networks with a ground plane near the ports  
A conducting housing (to be closed by a lid) for a coaxial cable distribution network has a common port and one of an aerial or pedestal port. A motherboard carries an RF circuit and a transfer...
5768375 CATV system  
An image-data-system host computer outputs image data, the protocol of which is not disclosed. The image data outputted from the image-data-system host computer is transmitted via an...
5675371 Apparatus for monitoring cable television system remote equipment performance and status using a cell modem  
A wireless remote data sensor for use in the cable television industry. It senses the status of equipment in the field, such as battery backup power equipment, amplifiers, pilot and signal level...
5614955 Compressed digital multi-channel video communications system having one or more auxiliary channels to accomodate high bit rates  
A compressed digital multi-channel video communications system having at least one auxiliary channel. The other channels are assigned to respective program sources. These channels are prioritized....
5614939 Coaxial cable service interrupter  
Disclosed is a circuit and system for preventing tampering with services provided in a broadband transmission network. A coaxial relay is coupled between a cable providing signals in the network...
5599190 Communication wiring system including a reconfigurable outlet assembly  
A communications wiring system includes a communications network interface device for routing a plurality of source signals between respective ones of a plurality of types of electrical sources and...
5539657 Picture image distributing apparatus provided within passenger moving vehicle  
A picture image distributing apparatus provided within a passenger moving vehicle, consists of: a head end portion for multichannel FDM picture image signals; an electrical optical for converting...
5530471 Radio and television distribution system  
A distribution system, useful with radio and television distribution, for distributing a signal having a plurality of channels includes a central station. The central station produces a first...
5467384 Method and apparatus for providing power to a coaxial cable network  
A fiber optic/coaxial cable telephony network including power. Power is supplied through the coaxial cable portion of the video network to an cable network unit where the power is converted and...
5452009 Digital transmission system with data rate optimized for noise in transmission medium  
A cable transmission system transmits television signals in a family of M-level symbol data constellations. Lower frequency ones of the television signals are transmitted in data constellations of...
5434610 Methods and apparatus for the reconfiguration of cable television systems  
A broadband cable television system for delivering broadband cable television signals from a headend to a plurality subscribers includes a bridger module. The bridger module allows upgrading of the...
5382971 Television signal cable distribution system and assembly of elements for constituting such a system  
The distribution network (67, 68) comprises as many cables as there are satellite signal sources and terrestrial television signals are added on each of these cables to satellite television signals...
5327230 Video multiplying system  
A VCR transmission device is disclosed including a transmitting unit capable of receiving a VCR video signal, conditioning the video signal and outputting the video signal onto a home power line...
5283789 Communication system providing data and television signals to PC work stations  
A communication system for transmitting relatively high frequency broadband electrical signals representative of broadband information and for transmitting relatively low frequency baseband...
5272556 Optical networks  
A system for distributing HDTV signals from a head station to a number of customer stations includes a single head-end optical source having a frequency f 0 and a modulator arranged to receive...
5130793 Reconfigurable multiple-point wired in-house network for simultaneous and/or alternative distribution of several types of signals, notably baseband images, and method for the configuration of a system such as this  
A transmission line formed by a twisted pair of conductors with at least one input point for connection to a device for injection of a signal into the pair of conductors, and several output points...
5107360 Optical transmission of RF subcarriers in adjacent signal bands  
Apparatus is provided for optically transmitting a plurality of AM modulated RF subcarriers in adjacent octaves. A first laser is modulated to produce a first optical output signal containing a...
5045940 Video/audio transmission systsem and method  
The invention is a data pipeline system which synchronizes the display of digitzed audio and video data regardless of the speed at which the data was recorded on its linear medium. To do this, the...
5008934 CATV transmission system using scrambled signals  
A CATV system includes a main head end as a system center and a plurality of subhead ends. A baseband TV signal is transmitted from the main head end to the subhead ends through optical fiber...
4959862 Active multichannel video processing hub for optimum transition from fiber to coax  
An active multichannel video processing hub which provides optinum transition from fiber to coaxial cable, provides optimum trading of bandwidth for signal to noise ratio. Fiber optic links have a...
4878245 Control and metering system for pay television over a cable network  
An improved control and metering system for pay television distribution over a cable network. A control unit is located near each receiver on a subscribers premises and a secure filter, switching...
4823386 Addressable subscriber cable television system  
An addressable cable television system includes a transmission cable for transmitting a plurality of television signals driven onto the cable from a head end thereof and a plurality of multiple...
4733223 Apparatus for monitoring a communications system  
Apparatus for monitoring the status of and controlling faults at remotely-located components in a single line communications system wherein return data signals from the components are transmitted...
4627105 Signal transmission system and method  
A sub-center type switched-star CATV system network in which a number of transmission signals are transmitted from a central source to a number of sub-centers over a number of sets of optical...
4621282 Transmitting stereo audio programs in cable TV systems  
Stereo audio signals are transmitted over optical fibres in a cable TV system in which stereo radio signals are received and demodulated to produce respective stereo multiplex signals. These stereo...
4586081 Method and apparatus for secure audio channel transmission in a CATV system  
A secure audio channel transmission system method and apparatus in which an FM signal is generated on an FM broadcast frequency, such as 107.5 megahertz, divided in frequency by 2 and distributed...
4532543 High channel density community antenna arrangement having low intermodulation products  
A frequency-conversion arrangement (C 1 -C j , l 1 -l k ) is connected to a distribution network (II, III) for converting the channel frequency distribution of television signals from an input...
4412245 Differential current detector in cable television trunk amplifier station  
A voltage comparator compares the DC current in active elements of a trunk amplifier with a variable reference voltage for detecting when to switch to a bypass mode. Its output is normally low for...
4313132 Cable TV security means  
Security means for cable television operators includes an enabling circuit which is located outside of the subscriber premises and is connected in circuit through the television cable with the...
4251691 Picture/audio signal transmission system  
A center-to-end type information service system utilizing the public telephone networks that are fundamental communication media of nation-wide scale is disclosed in which desired information is...
4200839 Wired television broadcasting systems  
A wired television broadcasting system is disclosed in which a plurality of programme signals are made available on separate conductive paths to each of a plurality of programme selectors...
4135202 Broadcasting systems with fibre optic transmission lines  
A wired broadcasting system is provided in which a signal path between a central station and at least some of a plurality of subscribers includes an optical fibre extending between an...
4120003 Multiple channel CATV system utilizing row grabber interface as CATV input  
An improved multichannel CATV type television system includes a real time frame grabbing system for substantially instantaneously providing a selectable continuous video displayable frame of video...
4099123 Electrical multi-channel signal transmission systems  
In an electrical multi-channel signal transmission system having channels with signal carriers of predetermined frequencies, each frequency is an integral multiple of a constant which is a measure...
4054910 Communication system for the transmission of closed circuit television over an ordinary pair of wires  
A communication system is provided which allows closed circuit television pictures to be transmitted from conventional TV cameras to conventional monitors via an ordinary pair of wires, for...
3978282 Apparatus and method for measuring the transmission characteristics of a network  
A substantially non-interfering, low-intensity sweeping test signal is transmitted along a network to be tested. Means are provided for receiving and tracking the test signal at the opposite end of...
3914534 Methods and apparatus for scrambling and unscrambling premium television channels  
A subscriber television system is disclosed having a central unit coupled by way of a plurality of video channels and a plurality of intermediate processors to individual subscriber locations. The...
3869564 Trunk switching system  
A trunk switching system for the transmission of a plurality of television channel signals comprising switching means having first and second input terminals each for respectively receiving a...
3731203 MONITORING CIRCUIT AND SYSTEM FOR DETECTING SIGNALS IN A SIGNAL TRANSMISSION SYSTEM  
A monitoring circuit which detects the presence or absence of signals on a signal transmission medium and generates a coded signal when the absence of signals is detected is shown. Also, a system...
3610933 COUPLING DEVICE FOR TRANSMITTING ELECTROMAGNETIC ENERGY FROM FLOOR COVERING  
A coupling device for penetrating a laminated floor covering, carrying electromagnetic energy and thereby transmitting power or signal or both from the floor covering to a receiving unit located on...
3581209 CABLE TELEVISION PROGRAM CAPACITY ENHANCEMENT  
The invention concerns a system wherein a distribution cable is operable to transmit TV signals to TV receivers each having a limited number of local channels, the method of the invention enabling...
3440571 INDUCTIVELY COUPLED UNIDIRECTIONAL TAPS  
3366731 Television distribution system permitting program substitution for selected viewers  
3350647 Wired broadcasting systems and communication cables therefor  
3093706 Television system  
2967930 Selective conversion network  
2857482 Automatic gain control system  
2733296 Title is not available  
2578836 Television and radio distribution system  
2523173 Multiple television system  
Matches 51 - 100 out of 109 < 1 2 3 >