摘要:
An apparatus for controlling distributed electrical loads including a microprocessor based central controller coupled via a twisted pair bidirectional data line to a plurality of microcomputer based transceiver decoders. Each transceiver decoder is coupled to a plurality of relays, each relay associated with a particular load to be controlled. Override switches and sensors, coupled to transceiver decoders provide override requests and information related to ambient conditions at the site of a load. A user defined data base includes sub-sets of relays called sectors, patterns of relay states, remote switches, a time dependent schedule and condition responses. A communication protocall and arbitration scheme provide for interactive communication between the central controller and each transceiver decoder with interfacing with the operation of any other transceiver decoder. Enhanced data storage capacity is achieved through dynamic allocation of memory space for pattern data.
摘要:
A circuit, for controlling the output level of a load circuit connected thereto, has a single input for receiving a control signal to provide both a selectable level on/off output signal at a first output connected to an on/off terminal of the load circuit, and a pair of essentially equal control currents drawn in shunt from a pair of output terminals connected to load output-level-setting input terminals. The shunt control currents are provided by a current-mirror circuit having a pair of substantially identical current sinks, each responsive to an input signal applied thereto in parallel from the single control circuit input.
摘要:
A method for interfacing two remote electronic units uses four lines and a handshaking routine including the steps of: causing the first unit to simultaneously transmit a strobe signal on one of the four lines and a signal representing one bit of the information to be communicated on a second of the four lines, sending the two signals continuously until acknowledged by the second unit; causing the second unit, when it receives these signals, simultaneously to transmit a strobe signal on a third line and a data signal, which may or may not be the same as that on the second line, on the fourth line, the third and fourth signals being transmitted continuously until their receipt is acknowledged; terminating transmission of the first and second signals when the first unit receives the third and fourth signals; and terminating the transmission of the third and fourth signals when the second unit determines that the first and second signals are no longer being transmitted. This routine is used for transmission of each bit of information to be communicated. If desired, a fifth line may be provided to carry a signal by means of which the first unit can reset the second unit so that transmission of the communication can be reinitiated in the event of difficulties.
摘要:
A programmable energy load controller system, allowing each of a multiplicity of energy loads to be established in a selected one of an unenergized condition and a plurality of energized conditions, utilizes a central microcomputer facility in communication with a selected one of a plurality of remotely located load control processors, each configured with a unique address and capable of selectively energizing a plurality of energy loads coupled thereto under control of the central facility. The central facility includes at least one user input device, allowing a plurality of maps of load conditions, established in accordance with a user-selectable criteria, such as time-of-day and day-of-week requirements, to be loaded into a data storage associated with the central computer. A real time clock means are utilized in association with the computer and the memory to enable the desired map of load energization under the selected criteria, with means being provided for entering, on a high priority basis, overrides to at least a selected portion of the map currently implemented. Programmable energy load control methods are also disclosed.
摘要:
A preamplifier using charge transfer techniques is formed on the same chip as a charge transfer analog to digital converter. The preamplifier then couples low level output sensors directly to the converter without need for a costly interfacing amplifier.
摘要:
An analog-to-digital converter of the metered charge transfer type is provided including an automatic polarity sensing circuit which selectively connects first and second input terminals to a charge storage location at appropriate times during a measurement cycle in order to insure that proper polarity relationships are maintained.
摘要:
A semiconductor switching circuit utilizes a relatively low breakdown voltage transistor for switching between a higher and a lower voltage by switching between a first conducting state of said transistor which is a "turned-on" state and a second state which is a "breakdown" state. The switching circuit is especially useful for the operation of display devices.
摘要:
Methods of fabricating a circuit structure are provided. The fabrication method includes: forming a chip layer, which includes obtaining at least one chip and disposing a structural material around and physically contacting the side surface(s) of each chip in the chip layer. The structural material has an upper surface substantially coplanar with or parallel to an upper surface of each chip and defines at least a portion of a front surface of the chip layer, and has a lower surface substantially coplanar with or parallel to a lower surface of each chip, which defines at least portion of a back surface of the chip layer. The method further includes forming at least one strengthening structure over the back surface of the chip layer. The strengthening structure is formed to strengthen an interface between the chip(s) and the structural material.
摘要:
Stackable circuit structures and methods of fabrication are provided employing first level metallization directly on a chips-first layer(s), which includes: a chip(s), each with a pad mask over its upper surface and openings exposing its contact pads; electrically conductive structures; and structural dielectric material surrounding the side surfaces of the chips and the conductive structures. Each chips-first layer further includes a metallization layer on the front surface of the layer, residing at least partially on the pad mask and extending over an edge of the chip. Together, the pad mask and the structural material electrically isolate the metallization layer from the chip. Input/output interconnect structures physically and electrically contact the metallization layer over the front surface and/or the lower surfaces of the electrically conductive structures at the back surface of the chips-first layer, to facilitate input/output connection to chips of the layers in a stack.
摘要:
Circuit structures and methods of fabrication are provided for facilitating implementing a complete electronic system in a compact package. The circuit structure includes, in one embodiment, a chips-first multichip base layer with conductive structures extending therethrough. An interconnect layer is disposed over the front surface of the multichip layer and includes interconnect metallization electrically connected to contact pads of the chips and to conductive structures extending through the structural material. A redistribution layer, disposed over the back surface of the multichip layer, includes a redistribution metallization also electrically connected to conductive structures extending through the structural material. Input/output contacts are arrayed over the redistribution layer, including over the lower surfaces of at least some integrated circuit chips within the multichip layer, and are electrically connected through the redistribution metallization, conductive structures, and interconnect metallization to contact pads of the integrated circuit chips of the multichip layer.