Class 377/34 - Minimum change code (e.g., Gray code)

Subclass of Class 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems
Definition: Subject matter comprising a code in which only one bit in
No. of patents: 65
Last issue date: 08/02/2011

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Number	Title	Issue Date
7991104	Modular low power gray code counter A modular Gray code counter of arbitrary bit length having identical Gray code counter cells in every bit position. Each cell comprises a Toggle Flop and logic which triggers the Toggle Flop and sets the state of the Gray code counter cell. The two outputs of a cell...	08/02/2011
7596201	Gray code counter and display device therewith There is offered a Gray code counter with which a delay time of a critical path is reduced and a fast operation is made possible. A first Gray code bit Q0 is obtained by outputting an output signal Q0o of an RDFF 2 through an RDFF 31	09/29/2009
7526059	Balanced Grey code utilization to increase NVM endurance A counting device includes a set of memory cells, including multiple groups of the memory cells configured to store count words of a count code, which include a less significant word and a more significant word. A controller assigns first and second groups of the me...	04/28/2009
7366274	Bidirectional shift register A bidirectional shift register includes a former stage multiplexer, a latter stage multiplexer, a former stage full-swing shift register, and a latter stage full-swing shift register, all of which have a plurality of registers all of the same type. The former and th...	04/29/2008
7242329	Method and system for prioritizing data values for robust data representation Methods, systems and data structures select prioritized robust data values from a plurality of available data values formed by a plurality of data bits, each capable of exhibiting a bit value. Available data values are arranged into a gray code format, and alternate...	07/10/2007
7194500	Scalable gray code counter The invention is a Gray code counter that uses a carry chain to determine the state of each bit of the counter. An additional bit that toggles at every clock is used to originate the carry chain, and to determine the counter direction. Then, a generic Gray count bit...	03/20/2007
7149275	Integrated circuit and method of implementing a counter in an integrated circuit An integrated circuit, such as a programmable logic device, implements a single bit transition counter in logic. The counter preferably comprises a first stage receiving a clock signal having a first clock rate and generating a least significant bit in a count. A pl...	12/12/2006
7148825	Data interface including gray coding A data interface includes a network interface processor, a transmitter, and a receiver. The network interface processor is operably coupled to transceive parallel data via a network connection. The transmitter is operably coupled to convert outbound parallel data fr...	12/12/2006
7149956	Converging error-recovery for multi-bit-incrementing gray code An L-bit gray-code input value can change by more N bits at a time. The lower N bits of the input are stored as a received least-significant-bits (LSB) while the upper bits are stored as a received most-significant-bits (MSB). A stored register holds the corrected, ...	12/12/2006
7092480	High-speed synchronous counters with reduced logic complexity Described are fast synchronous counters with reduced combinatorial logic. In one embodiment, a four-bit shift register is configured in a ring and preset with a data pattern (e.g., 1000). The register is then rapidly shifted into any of four unique states. Combinato...	08/15/2006
7085341	Counter with non-uniform digit base A nonvolatile counter. A nonvolatile storage is organized in digits having non-uniform bases. Circuitry is provided to increment a count value represented by the digits in response to an increment command. ...	08/01/2006
7075352	Latch-based pulse generator There is provided a pulse generator capable of generating a pulse with a reduced number of transistors that toggle in response to a clock signal, thereby reducing power consumption. The pulse generator includes a plurality of unit cells, wherein an nth unit cell (n ...	07/11/2006
7071855	Gray code conversion method and apparatus embodying the same A generalized Gray code converter includes a decimal-binary to intermediate-binary converter and an intermediate-binary to Gray code converter. The decimal-binary to intermediate-binary converter is operable to convert a sequence of sets of electrical signals encode...	07/04/2006
6950138	Gray code counter Conventionally, it is difficult to design the logic of a Gray code counter that can be used in interlaced counting. Even though interlaced counting is possible with a Gray code counter, the number of simultaneously changing bits increases greatly depending on the nu...	09/27/2005
6937172	Method and system for gray-coding counting A system for gray-code counting in an integrated circuit such as a programmable logic device uses a binary adder coupled to a binary counter output and to a selected binary offset value. The binary adder provides a binary sum that is converted to a gray code value b...	08/30/2005
6937688	State machine, counter and related method for gating redundant triggering clocks according to initial state A state machine, a counter, and related method for gating redundant triggering clocks according to the initial states is provided. The state machine includes a plurality of state units and a clock gating circuit. Each of the state unit is triggered by a clock to gen...	08/30/2005
6931091	Gray code counter A gray code is produced from a minimum of gate logic by making available and monitoring master outputs of master-slave latch pairs, where the latch pairs are arranged to form a cascading chain of toggle flip-flop stages. The least significant bit through one less th...	08/16/2005
6907098	Gray code counter A Gray code counter includes a holding circuit, first and second conversin circuit and an operation circuit. The holding circuit stores gray code signals and outputs the stored gray code signals in response to a clock signal. The first conversion circuit receives th...	06/14/2005
6900745	Method of scalable gray coding A method for generating a modulo Gray-code representation of a non-power-of-two set of binary values begins by determining a desired Gray-code sequence length. The method then continues by determining a bus width, M, in bits, based on the desired Gray-code sequence ...	05/31/2005
6879654	Non-integer frequency divider circuit A non-integer frequency divider is disclosed. The non-integer frequency divider circuit includes several base stages connected to each other. The non-integer frequency divider circuit also includes a clocking circuit for passing an enable bit from one of the base st...	04/12/2005
6857043	Shift register implementations of first-in/first-out memories utilizing a double increment gray code counter First-in/first-out (“FIFO”) memory circuitry includes first and second Gray-code-based counters for respectively counting write and read clock signals. A Gray code subtractor subtracts from one another the counts output by the counters. Shift register circuitry ...	02/15/2005
6845414	Apparatus and method of asynchronous FIFO control An apparatus and method for controlling an asynchronous First-In-First-Out (FIFO) memory. The asynchronous FIFO has separate, free running read and write clocks. A number of n-bit circular Gray code counters are used to handshake the operation between read and write...	01/18/2005
6836525	Method for establishing a gray code and related counter circuit A method for establishing a Gray code count sequence having N code words includes determining a first bit switch sequence having 2M−1 elements and a bit switching sequence property according to a first Gray code count sequence having 2M code ...	12/28/2004
6792065	Method for counting beyond endurance limitations of non-volatile memories A digital counter that uses non-volatile memories as storage cells, wherein the storage cells are sub-divided into two groups, one for the implementation of a rotary counter that keeps track of the less significant part of the count and a binary counter that keeps t...	09/14/2004
6762701	Scalable gray code counter and applications thereof A non-power-of-two modulo N Gray-code counter (the “Gray-code counter”) and a binary incrementer-decrementer algorithm are disclosed. One embodiment of the Gray-code counter of this invention comprises a Gray-to-binary converter for receiving an M-bit Gray-code ...	07/13/2004
6735270	Asynchronous up-down counter and method for operating the same An asynchronous up-down counter includes a plurality of counter blocks. Each of the counter blocks has a counter output, an up-down control output, and an up-down control input. A counter signal output from each of the counter blocks has at least two bits. The async...	05/11/2004
6707874	Multiple-output counters for analog-to-digital and digital-to-analog conversion A machine used for digital counting which can provide multiple output counts. The machine is particularly useful in analog-to-digital (A/D) converters and in digital-to-analog (D/A) converters. The multiple output counts can change in different directions or in the ...	03/16/2004
6703950	Gray code sequences The present invention comprises a method of Gray encoding/decoding of binary and Gray code sequences that are less than full-length, resulting in a geometrically reduced storage requirement....	03/09/2004
6687325	Counter with non-uniform digit base A nonvolatile counter. A nonvolatile storage is organized in digits having non-uniform bases. Circuitry is provided to increment a count value represented by the digits in response to an increment command....	02/03/2004
6639963	Up/down gray code counter and solid-state image sensor provided with such a counter A conventional up/down Gray code counter has both a logic circuit section for up counting and a logic circuit section for down counting, and thus has a large circuit scale. To overcome this inconvenience, an up/down Gray code counter of the invention has ...	10/28/2003
6473484	Binary counter and method for counting to extend lifetime of storage cells A digital counter and method for counting are implemented which minimize fatigue-related failure in the storage element for the count value. The counting sequence is chosen such that the transitions within individual storage elements are the same for each...	10/29/2002
6434642	FIFO memory system and method with improved determination of full and empty conditions and amount of data stored A structure and method for operating an asynchronous first in, first out (FIFO) memory system in which the full or empty condition of the memory is determined by comparing a currently-generated write address with a currently-generated read address and a n...	08/13/2002
6337893	Non-power-of-two grey-code counter system having binary incrementer with counts distributed with bilateral symmetry A gray-code counter system (AP1) for a RAM-based FIFO comprises a read pointer (10), a write pointer (20), and a detector (30). The read pointer includes a gray-code decoder (11), a binary incrementer (12), a gray-code encoder (13), and a register (14) that ho...	01/08/2002
6314154	Non-power-of-two Gray-code counter and binary incrementer therefor Non-power-of-two Gray-code counters, including modulos 10, 12, 14, and 22 are disclosed, along with a sequencing method they employ. Each counter includes a register for storing an N-bit, e.g., 4-bit, Gray-code count. The count is converted to binary code...	11/06/2001
6269138	Low power counters A low power counter for cycling through a predetermined sequence of states in response to pulses on an input line includes a number of counter blocks, corresponding to the number of bits of the counter, connected in series. The low power counter blocks in...	07/31/2001
6249562	Method and system for implementing a digit counter optimized for flash memory A system and method of implementing a digit counter having a plurality of digits, ranging from a least significant digit (LSD) to a maximum positional digit (MDP), is described. In one embodiment, the system comprises switching a single digit for each inc...	06/19/2001
6084935	Binary counter and method for counting to extend lifetime of storage cells A digital counter and method for counting are implemented which minimize fatigue-related failure in the storage element for the count value. The counting sequence is chosen such that the transitions within individual storage elements are the same for each...	07/04/2000
6075833	Method and apparatus for counting signal transitions A circuit for counting events occurring between two different clock domains includes a gray code counter having at least two stages. The gray code counter is incremented by the event to be counted. Dual rank synchronizer circuit and delay flip/flops are c...	06/13/2000
5923718	Binary counter reading circuit An asynchronous reading circuit improves reliability of data read from a binary counter. Count data generated by a binary counter 101 according to a counting clock is converted into a gray code by a gray encoder. The count data represented by the gray cod...	07/13/1999
5778415	Apparatus, systems and methods for controlling electronic memories Memory control circuitry is provided which includes circuitry for generating a sequence of gray code values. Counter circuitry is coupled to the gray code circuitry and controls the duration of assertion of each of the generated gray code values. Bus circ...	07/07/1998

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Class 377/34 - Minimum change code (e.g., Gray code)