259 results about "Programmable logic array" patented technology

Latch circuitry is provided for programmable logic regions on integrated circuits such as programmable logic device integrated circuits. A programmable logic device may have programmable logic regions based on programmable combinational logic circuits. Latch circuitry in a logic region may be provided between an output of a programmable combinational logic circuit in the logic region and an output of the logic region. When the latch circuitry is enabled, the latch circuitry performs the functions of a level-sensitive latch. When the latch circuitry is disabled, the latch circuitry acts as a passive data path. The passive data path may include only a single driver so that the latch circuitry adds essentially zero additional delay to the data produced by the combinational logic.

A non-volatile programmable memory cell suitable for use in a programmable logic array includes a non-volatile MOS transistor of a first conductivity type in series with a volatile MOS transistor of a second conductivity type. The non-volatile MOS transistor may be a floating gate transistor, such as a flash transistor, or may be another type of non-volatile transistor such as a floating charge-trapping SONOS, MONOS transistor, or a nano-crystal transistor. A volatile MOS transistor, an inverter, or a buffer may be driven by coupling its gate or input to the common connection between the non-volatile MOS transistor and the volatile MOS transistor.

Structures and methods for in service programmable logic arrays with low tunnel barrier interpoly insulators are provided. The in-service programmable logic array includes a first logic and a second logic plan having a number of logic cells arranged in rows and columns that are interconnected to produce a number of logical outputs such that the in service programmable logic array implements a logical function. The logic cell includes a first source/drain region and a second source/drain region separated by a channel region in a substrate. A floating gate opposing the channel region and is separated therefrom by a gate oxide. A control gate opposes the floating gate. The control gate is separated from the floating gate by a low tunnel barrier intergate insulator. The low tunnel barrier intergate insulator includes a metal oxide insulator selected from the group consisting of PbO, Al₂O₃, Ta₂O₅, TiO₂, ZrO₂, Nb₂O₅ and/or a Perovskite oxide tunnel barrier.

An architecture for a reconfigurable network that can be implemented on a semiconductor chip is disclosed, which includes a hierarchical organization of network components and functions that are readily programmable and highly flexible. Essentially, a reconfigurable network on a chip is disclosed, which includes aspects of reconfigurable computing, system on a chip, and network on a chip designs. More precisely, a reconfigurable network on a chip includes a general purpose microprocessor for implementing software tasks, a plurality of on-chip memories for facilitating the processing of large data structures as well as processor collaboration, a plurality of reconfigurable execution units including self-contained, individually reconfigurable programmable logic arrays, a plurality of configurable system interface units that provide interconnections between on-chip memories, networks or buses, an on-chip network including a network interconnection interface that enables communication between all reconfigurable execution units, configurable system interface units and general purpose microprocessors, a fine grain interconnect unit that gathers associated input/output signals for a particular interface and attaches them to a designated system interface resource, and a plurality of input/output blocks that supply the link between an on-chip interface resource and a particular external network or device interface. Advantageously, the network minimizes the configuration latency of the reconfigurable execution units and also enables reconfiguration on-the-fly.

Vertical body transistors with adjacent horizontal gate layers are used to form a memory array in a high density flash electrically erasable and programmable read only memory (EEPROM) or a logic array in a high density field programmable logic array (FPLA). The transistor is a field-effect transistor (FET) having an electrically isolated (floating) gate that controls electrical conduction between source regions and drain regions. If a particular floating gate is charged with stored electrons, then the transistor will not turn on and will provide an indication of the stored data at this location in the memory array within the EEPROM or will act as the absence of a transistor at this location in the logic array within the FPLA. The memory array or the logic array includes densely packed cells, each cell having a semiconductor pillar providing shared source and drain regions for two vertical body transistors that have control gates overlaying floating gates distributed on opposing sides of the semiconductor pillar. Both bulk semiconductor and silicon-on-insulator embodiments are provided. If a floating gate transistor is used to store a single bit of data or to represent a logic function, an area of only 2F2 is needed per respective bit of data or bit of logic, where F is the minimum lithographic feature size.

An exceptionally effective SoC design is achieved by the user of wrappers that comprise a functionally reconfigurable module (FRM) that is capable of affecting the operational functionality of the wrapper and that, consequently, is capable of affecting the operational functionality of a designed SoC. One embodiment of a core+wrapper combination comprises distinct input and output cells within the wrapper, and a separate FRM. Another embodiment may embed the input and output cells within the FRM. The FRM may be implemented with, for example, a field programmable logic array (FPLA). An additional advance is realized by providing a number of spare leads in the signal paths network that interconnects the various SoC elements.

The invention discloses a fast opto-acoustic three-dimensional imaging device which comprises a laser generating device, an optical mask, a programmable logic array module, an optical signal receiving device, an opto-acoustic signal processing device and a three-dimensional image reconstruction module. According to the fast opto-acoustic three-dimensional imaging device, the connection and disconnection of all micro lenses in the optical mask can be controlled by the programmable logic array module, and further laser beams are controlled to irradiate areas on a tested object through the optical mask, so that opto-acoustic signals are generated and are reconstructed into a three-dimensional image. According to the fast opto-acoustic three-dimensional imaging device, since the change of theconnection and disconnection of all the micro lenses in the optical mask is extremely rapid, the areas irradiated by the laser beams on the tested object can be changed rapidly, further enough opto-acoustic signals can be received in extremely-short time and can be reconstructed into the three-dimensional image, and the problem that the imaging speed of the existing opto-acoustic three-dimensional imaging device is low is solved.

The invention belongs to the technical field of electronic design automation and particularly relates to a fast generating method of a user-customizable PLD (programmable logic device) layouts. The fast generating method includes: preparing unit layouts and building a configuration file for each unit layout; calculating scale of each unit layout; splicing the unit layouts; and reserving customized layout shapes. On the basis of the existing unit layout library, layout files of optionally designed scales can be generated fast and performance of the layouts generated is similar to that of manually customized layouts. The layouts generated by the method has the advantages that scales of the generated programmable logic array layouts are customizable, namely a user can assign the scales of layout arrays, areas can be reserved automatically on the layouts according to the layout shape requirements set by a user, and other IP (intellectual property) cores can be embedded in the programmable logic array layouts conveniently.

A novel architecture for a multi-scale programmable logic array (MSA) to be used in the design of complex digital systems allows digital logic to be programmed using both small-scale blocks (also called gate level blocks) as well as medium scale blocks (also called Register Transfer Level or RTL blocks). The MSA concept is based on a bit sliceable Arithmetic Logic Unit (ALU). Each bit-slice may be programmed to perform a basic Boolean logic operation or may be programmed to contribute to higher-level functions that are further programmed by an ALU controller circuit. The ALU controller level in this new approach also allows the primitive logic operations computed at the bit-slice level to be combined to perform complex random logic operations. The data shifting capability of this new programmable logic architecture reduces the complexity of the programmable routing needed to implement shift operations including multiplier arrays. The new array also allows logic variables under program control to dynamically modify the micro-program of each ALU. This technique is called configuration overlay and simplifies the programming of complex arithmetic and random logic functions.

The present application relates to a programmable logic array, and discloses a logic circuit layout and routing method, a graphical display method and a system thereof. The present invention is directed to graphical display of logic circuits, directed acyclic graph generation algorithm and preset column distribution rules are used to allocate logical columns, and heuristic algorithm is used to allocate logical rows based on median sorting, so as to optimize the number of intersection points. At the same time, the physical coordinates of components are allocated according to their physical dimensions in the process of automatic layout, so that the components are centralized and arranged compactly. The method of cache and windowing is also used to realize the fast response when the logic circuit of large layout is dragged to view. Finally, the generated logic circuit diagram is uniformly distributed, the input and output conform to the circuit habits, the number of intersection points isless, and the plotting is fast.

The invention belongs to programmable component structure technology field, specially a local programmable logic array wiring resource structure and modeling method which supports the crutch line. The wiring resource structure of the invention includes: programmable interconnected line, uniform switch matrix, input and output multi path selector array and logic unit. It breaks the limit of level and uprightness interlinkage resource, introduces the concept of crutch line, makes the wiring path not pass the programmable switch, it gives attention to speed and agility. The description of wiring line resource, the interconnected line is distributed to the repeated unit then integral interconnected resource is described by describing an interconnected line resource in a repeated unit. This describing method is very flexible, the kind, amount, proportion of interconnected resource can be changed conveniently, and any switch array can be generated.

The invention relates to a Brillouin optical-time-domain analyzer based on a coherence dual-pulse pair sequence technology and a method for restraining common-mode noise by utilizing the same, belongs to the field of optics, and solves the problems that a traditional Brillouin optical-time-domain analyzer is low in spatial resolution, long in measuring signal time and low in signal-to-noise ratio. A laser is adopted, an upper branch of light divided by an optical-fiber coupler I is used as pump light, pulse pairs with different pulse widths can be periodically generated by a field-programmable logic array in a programming manner, and the pulse pairs are continuously and optically modulated to form a coherence pulse pair sequence through a photoelectric modulator; a lower branch provides detection light, the detection light enters a photoelectric modulator after a polarization state is adjusted, upper marginal frequency light and lower marginal frequency light which having the frequency difference of Brillouin frequency shifting gamma B are generated on the basis of carrier light, the pump light consisting of the coherence pulse pair sequence and the modulated detection light has a Brillouin scattering phenomenon in a sensing optical fiber, and two Brillouin signals are detected by a photoelectric detector. The Brillouin optical-time-domain analyzer and the method are suitable for restraining the common-mode noise.

An electronic circuit has a programmable logic cell with a plurality of programmable logic units that are capable of being configured to operate in a multi-bit operand mode and a multiplexing mode. The programmable logic units are coupled in parallel between an input circuit and an output circuit. In a multi-bit operand processing mode the input circuit is configured to supply logic input signals from different ones of the logic inputs to the programmable logic units. The programmable logic units are coupled to successive positions along a carry chain at least in the multi-bit operand mode, so as to process carry signals from the carry chain. An output circuit passes outputs from the programmable logic units in parallel in the multi-bit operand mode. The programmable logic units have look-up tables which share the same configuration bits. The programmable logic units can also have multiplexers for passing one of the received input signals when configured to operate in a multiplexing mode of operation.

One aspect disclosed herein relates to a method for forming a programmable logic array. Various embodiments of the method include forming a first logic plane and a second logic plane, each including a plurality of logic cells interconnected to implement a logical function. Forming the logic cells includes forming a horizontal substrate with a source region, a drain region, and a depletion mode channel region separating the source and the drain regions, and further includes forming a number of vertical gates located above different portions of the depletion mode channel region. At least one vertical gate is separated from the depletion mode channel region by a first oxide thickness, and at least one of the vertical gates is separated from the depletion mode channel region by a second oxide thickness. Other aspects and embodiments are provided herein.

A method and apparatus for implementing dynamic logic with programmable dynamic logic gates acts as a complement to programmable logic arrays (PLAs) used in high-speed microprocessor designs. A matrix of selectable cells provides powerful logic functions such as AND-OR gate capability with a minimum of inputs and transistors. By using programmable logic arrays and programmable dynamic gates, the efficiency of a logic block can be dramatically improved with little added circuit area.

The invention provides a turbine emergency protective system capable of preventing misoperation, which comprises two sets of electronic traction support (ETS) devices. The turbine emergency protective system is characterized in that each ETS device is internally provided with two complex programmable logic arrays, the input end of each complex programmable lock array is connected with a turbine operation out-of-limit parameter switching value input signal, the output ends of the two complex programmable logic arrays in each set of ETS device are subjected to And logic through hardware and then output, the output ends of the two sets of ETS device are subjected to Or logic through the hardware and then output, the total output end trip signal is connected with a trip electromagnetic valve, and the complex programmable logic array comprises a complex programmable logic element and a field programmable gate array. The ETS systems greatly improve the safety of the whole system, achieve actual no misaction and no misoperation, and have low cost.

The invention discloses a programmable logic circuit. The programmable logic circuit comprises 4 P-channel metal oxide semiconductor (PMOS) transistors and 6 N-channel metal oxide semiconductor (NMOS) transistors. Four logical functions, namely AND, OR, XOR and XNOR logics of two input signals, are realized by only using ten transistors and are four basic circuits which are commonly used for establishing systems. The ten transistors are divided into three groups, wherein the first group consists of two NMOS transistors and two PMOS transistors for realizing the logical functions such as AND and XNOR; the second group consists of two NMOS transistors and two PMOS transistors for realizing the logical functions such as OR and XOR; and the third group consists of two NMOS transistors for realizing the logical function of selecting whether to output the first group or the second group finally by using an either-or multiplexer. The circuit structure respectively realizes the circuit structure of the first group and the circuit structure of the second group by ingeniously utilizing the relationships between truth tables of two input AND logics and XNOR logics as well as two input OR logics and XOR logics. The same circuit functions as those of the programmable logic circuit are realized by 26 transistors in a conventional method; however, only 10 transistors are used in the programmable logic circuit.