摘要:
An apparatus for selecting operating conditions of a genset, the apparatus including a processor circuit configured to select a set of operating points from a plurality of operating points of the genset each comprising an engine speed in a generator electrical output value and a plurality of cost values associated with operating the genset at respective operating points such that the sum of the cost values associated with the operating points in said set is minimized and such that the engine speed increases or decreases monotonically with monotonically increasing or decreasing electrical power output values.
摘要:
A delay locked loop operates over a wide range of frequencies and has high accuracy, small silicon area usage, low power consumption and a short lock time. The DLL combines an analog domain and a digital domain. The digital domain is responsible for initial lock and operational point stability and is frozen after the lock is reached. The analog domain is responsible for normal operation after lock is reached and provides high accuracy using smaller silicon area and low power.
摘要:
A lookup table for searching for a longest prefix match for a key is disclosed. The lookup table provides a match for a key in a single search cycle. The number of matches stored in the lookup table is maximized by storing each match in only one location in the lookup table. The binary tree is divided into a plurality of levels and each level has a plurality of subtrees. A subtree descriptor stored for a subtree includes a field for each node in the subtree. The state of the field indicates whether an entry for the node is stored in the table. The bit vector allows indexing of the single match stored for the key.
摘要:
We present a method and apparatus for performing adaptive data compression. An alphabet and vocabulary in the encoder and decoder is built adaptively and stored in a dictionary as symbols are to be encoded and decoded. Each time an unknown symbol is to be encoded by the encoder, the encoder adds the symbol to the dictionary and transmits it in plain in the encoded string. The code words transmitted by the encoder include symbols and indexes. The state of a prefix bit preceding the code word indicates whether the code word is a plain symbol or an index of a symbol or string of symbols stored in the dictionary. The decoder examines the prefix bit of each code word as it is received to determine if the code word stores a symbol in plain or in index. If the code word stores a symbol in plain, the decoder learns the symbol by adding a sequence of symbols resulting from the concatenation of previously decoded symbols and the first symbol of the currently decoded symbol and by adding the symbol to its dictionary. If the code word stores an index, the decoder decodes the code word by extracting the symbol or sequence of symbols stored in the dictionary at the respective index in the dictionary.
摘要:
A load balancing mechanism maps a binary tree representation of a routing table into a set of fixed size memories. The mechanism efficiently utilizes the memory in the routing table without violating the tree precedence constraints and the memory access requirements of a pipelined system. The mechanism stores a subtree associated with a densely populated level of the binary tree in memory associated with lower levels.
摘要:
We present a lookup table which allows sparse subtree descriptors and dense subtree descriptors to be stored in the same memory. A subtree entry in the memory stores a dense subtree descriptor for a dense subtree or a plurality of sparse subtree descriptors for sparse subtrees. The subtree entry is indexed by a leaf in the previous subtree. The sparse subtree descriptor stores at least one node descriptor. The node descriptor describes a set of leaves in the sparse subtree having a common value. The common value is encoded in the node descriptor using run length encoding.
摘要:
We present a method and apparatus for increasing the depth of a lookup table. The lookup table includes at least two lookup units. A search request for a final result value corresponding to the key is issued to each of the lookup units in parallel. Each of the lookup units performs a multi-level search in parallel for the final result value. The final result value stored in only one of the lookup units is provided by one of the lookup units.
摘要:
A method and apparatus for starting an internal combustion engine is disclosed. A motor is mechanically coupled to the engine, the engine having at least one moveable element mounted in a chamber, the moveable element being operable to cause a changing compression condition within the chamber and being mechanically coupled to a shaft for generating mechanical power. The method involves causing the motor to supply a positioning torque to the engine to move the at least one moveable element into a starting position. The method also involves causing the motor to supply a starting torque to the engine when the at least one moveable element is in the starting position to cause the moveable element to accelerate from the starting position under low compression conditions to generate sufficient momentum to overcome a peak compression condition in the chamber, thereby reducing the starting torque required to start the engine.
摘要:
A systematic method for single-rail domino logic circuits is provided, in which inverting and non-monotonic logic functions can be integrated into a pipelined system with almost zero overhead. This logic family, called Clock Logic (CL)-domino is functionally complete while tolerating skew and minimizing the number of clock phases that must be distributed. Simulation results for a CL-domino ALU at 1-GHz under high skew (1-FO4) conditions, shows a power reduction of 41% over the same ALU implemented in dual-rail skew-tolerant domino logic. This power reduction incurs no performance penalty over dual-rail techniques, although in some cases additional design effort is required.
摘要:
A dynamic random access memory (DRAM) having pairs of bitlines, each pair being connected to a first bit line sense amplifier, wordlines crossing the bitlines pairs forming an array, charge storage cells connected to the bitlines, each having an enable input connected to a wordline, the bit line sense amplifiers being connected in a two dimensional array, pairs of primary databuses being connected through first access transistors to plural corresponding bit line sense amplifiers in each row of the array, apparatus for enabling columns of the first access transistors, databus sense amplifiers each connected to a corresponding data bus pair, a secondary databus, the secondary databus being connected through second access transistors to the databus sense amplifiers, and apparatus for enabling the second access transistors, whereby each the primary databus pair may be shared by plural sense amplifiers in a corresponding row of the array and the secondary databus may be shared by plural primary databus pairs.