Abstract: A modular ballast system for supporting objects uses tubing such as pipes of appropriate size for the required ballast. Once in place, the empty pipes are filled with a watery mix (slurry) of sand, silt, gravel, soil, cement or other generally available material to generate a majority of the ballast weight. A two piece clamping mechanism provides fixed placement attachment points suitable for attachment by supported structures. The lower piece of the clamping mechanism sits under the ballast tubing and is designed to both support and disperse the anticipated weight of the objects with minimal impact on the surface beneath it. The upper piece of the clamping mechanism mates to the lower clamping piece and completes a full 360 degree collar around the ballast tubing to create a durable clamping mechanism that both captures the weight and position of the ballast tubing and prevents the ballast tubing from shifting.

Abstract: A racking system for holding solar panels and other similar panels in a fixed position and that can easily adjust to terrains which are not level and adapt to variations in solar panel size without different hardware and without significant manual effort is disclosed. Adjustable channels hold the panels in place and the entire assembly process can be completed without the need for bolts, screws, washers, and nuts.

Abstract: A racking system for holding solar panels and other similar panels in a fixed position and that can easily adjust to terrains which are not level and adapt to variations in solar panel size without different hardware and without significant manual effort is disclosed. Adjustable channels hold the panels in place and the entire assembly process can be completed without the need for bolts, screws, washers, and nuts.

Abstract: A modular ballast system for supporting objects uses tubing such as pipes of appropriate size for the required ballast. Once in place, the empty pipes are filled with a watery mix (slurry) of sand, silt, gravel, soil, cement or other generally available material to generate a majority of the ballast weight. A two piece clamping mechanism provides fixed placement attachment points suitable for attachment by supported structures. The lower piece of the clamping mechanism sits under the ballast tubing and is designed to both support and disperse the anticipated weight of the objects with minimal impact on the surface beneath it. The upper piece of the clamping mechanism mates to the lower clamping piece and completes a full 360 degree collar around the ballast tubing to create a durable clamping mechanism that both captures the weight and position of the ballast tubing and prevents the ballast tubing from shifting.

Abstract: A digitally programmable delay circuit comprising a plurality of transistors connected in parallel with each other and to a line carrying a signal having an edge to be delayed. One or more of the transistors are selected by a delay control signal to impose a delay amount to the edge, wherein the delay control signal is based on a desired delay amount and a measure of instantaneous process, voltage and temperature conditions of an integrated circuit in which the plurality of transistors are implemented. A selector circuit is responsive to the delay control signal and converts the delay control signal into one or more transistor selection signals to activate one or more of the plurality of transistors. The plurality of transistors may comprise a first sub-circuit having a plurality of transistors of a first type (e.g., P-type) connected in parallel with each other in a ladder configuration, and a second sub-circuit comprising a plurality of transistors of a second type (e.g.

Abstract: A digital storage medium for storing electronic data for use with a clock tree design tool to design a clock distribution network within an integrated circuit. The electronic data implements a library of shim cells, wherein each of the shims cells represents a physical embodiment of a different clock driver cell such that all of the shim cells in the library are interchangeable in the clock distribution design without requiring any change in the placement or routing within the integrated circuit to maintain compliance with design requirements for the integrated circuit. Each cell within a library represents a structure that introduces a particular delay time in the clock signal. The library contains cells having a range of delays that span a range that is sufficiently large to deal with the range of clock skews typically encountered during integrated circuit design.

Abstract: A clock signal generation system and method to distribute at least one clock signal to a plurality of points on a circuit board using a plurality of digitally programmable delay circuits each of which delays the clock signal by a desired amount so as to synchronize arrival of the clock signal when distributed to each of the plurality of points on the circuit. Each digitally programmable delay circuit comprises a plurality of circuit stages connected in series with each other. Each circuit stage comprises a plurality of transistors of a first type (e.g., P-type) connected in parallel with each other, and a plurality of transistors of a second type (e.g., N-type) connected in parallel with each other. In each circuit stage, one or more of the plurality of transistors of the first type are selected to delay a rising edge, and one or more of the plurality of transistors of a second type are selected to delay a falling edge.

Abstract: A digitally programmable delay circuit comprising a plurality of transistors connected in parallel with each other and to a line carrying a signal having an edge to be delayed. One or more of the transistors are selected by a delay control signal to impose a delay amount to the edge, wherein the delay control signal is based on a desired delay amount and a measure of instantaneous process, voltage and temperature conditions of an integrated circuit in which the plurality of transistors are implemented. A selector circuit is responsive to the delay control signal and converts the delay control signal into one or more transistor selection signals to activate one or more of the plurality of transistors. The plurality of transistors may comprise a first sub-circuit having a plurality of transistors of a first type (e.g., P-type) connected in parallel with each other in a ladder configuration, and a second sub-circuit comprising a plurality of transistors of a second type (e.g.

Abstract: A digital storage medium storing electronic data for use with a clock tree design tool to design a clock distribution network within an integrated circuit, the electronic data implementing a library of shim cells, wherein each of the shim cells in the library represents a physical embodiment of a different clock driver cell of a plurality of clock driver cells and wherein all of the shim cells in the library are interchangeable in the clock distribution network design without requiring any change in placement or routing within the integrated circuit to maintain compliance with design requirements for the integrated circuit.

Abstract: A system for providing protected two-way communication between a shared control database (“base station”) and at least one remotely located protector module/remote unit uses a two-way pager system in conjunction with a communications host and a security algorithm. The security algorithm has the capability of producing a time-varying password, say every sixty seconds, and can be made part of a microprocessor housed in the protector module. Each protector module has a unique inherently assigned identification number (ID) which is verified and authenticated by the control database each time a message is received from the remotely located associated protector module. In addition, the system makes sure that each communication between the control database and a remote unit has a component which matches a predetermined electronic identification number (EIN).