Back to results
US 9,178,505 B2Granted
Cross point switch
AssigneeIntellectual Venture Funding LLC
InventorsRobert P. Masleid, Scott Pitkethly
Life of this patent
Estimating the term…
Abstract
A cross point switch, in accordance with one embodiment of the present invention, includes a plurality of tri-state repeaters coupled to form a plurality of multiplexers. Each set of corresponding tri-state repeaters in the plurality of multiplexers share a front end module such that delay through the cross point switch due to input capacitance is reduced as compared to conventional cross point switches.
Claims20
A method comprising:
- coupling a first signal, an enable signal, and an inverted version of the enable signal as inputs to a plurality of gate terminals of a first inverter that is coupled in series with a second inverter between an input and an output, wherein the second inverter is configured to output the first signal;
- if the enable signal is in a first state and the inverted version of the enable signal is in a second state:
- turning on, for a period of time, one of a first drive circuit coupled to the output or a second drive circuit coupled to the output;
- and
- controlling the output to represent an input signal;
- and
- if the enable signal is in the second state and the inverted version of the enable signal is in the first state, controlling the output to operate in an impedance state.
4 more elements
A method comprising:
- coupling a first circuit to a first select line and a first input line;
- coupling a second circuit to a second select line and a second input line;
- coupling an output of the first circuit and an output of the second circuit to an output line;
- if the first select line is in a first state and the second select line is in a second state:
- turning on, for a first period of time, and turning off one of a first drive circuit of the first circuit or a second drive circuit of the first circuit;
- controlling the output of the first circuit to represent an input signal in the first input line at the output line;
- and
- controlling the output of the second circuit to operate in an impedance state;
- and
- if the first select line is in the second state and the second select line is in the first state:
- turning on, for a second period of time, and turning off one of a third drive circuit of the second circuit or a fourth drive circuit of the second circuit;
- controlling the output of the first circuit to operate in the impedance state;
- and
- controlling the output of the second circuit to represent an input signal in the second input line at the output line.
11 more elements
A method comprising:
- coupling a first plurality of circuits to a first input line and to a plurality of output nodes;
- coupling a second plurality of circuits to a second input line and to the plurality of output nodes;
- coupling a first select line to at least one circuit of the first plurality of circuits and to at least one circuit of the second plurality of circuits;
- coupling a second select line to at least one circuit of the first plurality of circuits and to at least one circuit of the second plurality of circuits;
- and
- by using the first select line and the second select line, selecting at least one signal path from the first input line to the output nodes and selecting at least one signal path from the second input line to the output nodes.
3 more elements
Dependencies are inferred from the claim text.