Audio/video and data signal redistribution system
A system for redistributing a multiple input audio/video and data signals having a redistributing device equipped to receive signals in a multiple formats and redistribute a selected signal to a user's premises over conductors, preferably existing twisted-pair telephone wire. The redistributing device is in interactive communication with a communications interface located in the user's premises which receives user-input control signals and contains switching circuitry which routes the selected signal to the user's premises where it is received by the receiving unit such as a television receiver. A single redistributing device services an entire multi-user network from a common distribution point, and services multiple users independently. The system of the invention does not interfere with normal use of the telephone network, so users can interactively access services provided by the system and use the telephone at the same time. In one preferred embodiment the system of the invention dynamically allocates frequencies and modulation techniques to various output signals, to maximize spectral efficiency and minimize interference and cross-talk.
1. A system for redistributing a plurality of audio/video signals to a plurality of units over conductors, each unit being serviced through a common distribution point, each unit within the plurality of units having at least one communications interface, the system comprising
a server,
at least one demodulator for demodulating at least one input signal, the server controlling an output program selection of the input signals responsive to one or more control signals corresponding to each user-selected program input into one of the at least one communications interfaces in one of the plurality of units, and at least one processor for processing the at least one input signal for switching by one or more of matching an impedance of the input signal to an output impedance, raising a baseband of the signal, equalizing high frequency components, increasing a level of chroma, increasing a peak-to-peak voltage, optimizing frequency allocation, and selecting an appropriate modulation technique, and
at least one switching device for routing the program selection using an internet protocol or other communication protocol or combination thereof, the switching device being controlled by the server and outputting an output signal containing the user-selected program, which output signal is sent only to the at least one communications interface within the one of the plurality of units and not to others of the plurality of units, responsive to the one or more control signals input into the at least one communications interface,
wherein the at least one communications interface in the one of the plurality of units receives the program selection for transmission of the user-selected program to at least one receiving device in the one of the plurality of units.
2. The system of claim 1 in which the communications interface includes a data interface for receiving data from a keyboard, joystick, card reader, bar code reader or other data providing device.
3. The system of claim 1 in which the communications interface includes a network interface for transmitting data from a computer as an input signal to the demodulator.
4. A method of redistributing a plurality of audio/video signals to a plurality of units over conductors, each unit being serviced through a common distribution point, each unit within the plurality of units having at least one communications interface, the method comprising the steps of
(a) receiving at least one input signal containing a program,
(b) demodulating the at least one input signal,
(c) processing the at least one input signal to a format suitable for switching by one or more of matching an impedance of the input signal to an output impedance, raising a baseband of the signal, equalizing high frequency components, increasing a level of chroma, increasing a peak-to-peak voltage, optimizing frequency allocation, and selecting an appropriate modulation technique,
(d) selecting a processed input signal for redistribution to one unit of the plurality of units using an internet protocol or other communication protocol or combination thereof, according to one or more control signals corresponding to a user-selected program input into at least one communications interface in one of the plurality of units, and
(e) sending an output signal containing the user-selected program only to the at least one communications interface within the one of the plurality of units, responsive to the one or more control signals input into the at least one communications interface, and not to others of the plurality of units.
5. The method of claim 4 in which the communications interface includes a data interface for receiving data from a keyboard, joystick, card reader, bar code reader or other data providing device.
6. The method of claim 4 in which the communications interface includes a network interface for communicating data from a computer as an input signal to a demodulator.