Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| RE42737 | Voice-to-remaining audio (VRA) interactive hearing aid and auxiliary equipment An integrated individual listening device and decoder for receiving an audio signal including a decoder for decoding the audio signal by separating the audio signal into a voice signal and a background signal, a first end-user adjustable amplifier coupled to the voi... | 09/27/2011 |
| 7796062 | Method and apparatus for providing non-power-of-two even count gray code An apparatus and a method for enhancing digital processing implementation using non-power-of-two even count Gray coding are disclosed. The even count encoding device includes a first circuit, a second circuit, and a coding circuit. The first circuit, in one embodime... | 09/14/2010 |
| 7366244 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 04/29/2008 |
| 7319416 | Tunneling-resistor-junction-based microscale/nanoscale demultiplexer arrays Various embodiments of the present invention are directed to demultiplexers that include tunneling resistor nanowire junctions, and to nanowire addressing methods for reliably addressing nanowire signal lines in nanoscale and mixed-scale demultiplexers. In one embod... | 01/15/2008 |
| 7271757 | Encoder circuit and A/D conversion circuit An encoder circuit and A/D converter that can minimize the error of an encoder output with respect to all the possible combinations of thermometer codes are desired to be provided. To this end, an encoder circuit has a logic thereof configured to take a thermometer ... | 09/18/2007 |
| 7262523 | Wireless encoder A wireless encoder system facilitates operation and control of a motor, such as linear motor. The system includes an encoder sensor moveable with a first part of the motor. The encoder sensor is operative to sense movement of the first part relative the second part ... | 08/28/2007 |
| 7248698 | System for generating pseudorandom sequences A system for generating pseudorandom codes using a register which contains an identification of the code tree leg of the desired code and a counter which outputs a successive binary sequence. The output from the counter is bit-by-bit ANDed with the output of the reg... | 07/24/2007 |
| 7199631 | Storing an unchanging binary code in an integrated circuit The invention concerns a circuit (1) for storing a binary code (B1, B2, Bi-1, Bi, Bn-1, Bn) in an integrated circuit chip, comprising an input terminal (2) applying a signal (E) triggering reading of the code, output termina... | 04/03/2007 |
| 7176825 | Data-converting circuit, data-converting method, and digital-to-analog converter using the same A data converting method is realized by a data-converting circuit including: a data combining circuit for outputting 1st through (2nā1)th intermediate data bits by combining data bits corresponding to ā1ās in n-bit binary data ... | 02/13/2007 |
| 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 |
| 7123676 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 10/17/2006 |
| 7054075 | Optical apparatus The invention provides an optical apparatus enabling diopter adjustment, etc. to be achieved using, for instance, a reflection type variable-optical property optical element or a variable-optical property mirror but without recourse to any mechanical moving part. Th... | 05/30/2006 |
| 7054294 | Orthogonal variable spreading code (OVSF) allocation telecommunications network A code allocation unit (100) of a radio access telecommunications network allocates one of plural Orthogonal Variable Spreading Factor (OVSF) codes to a radio access connection for use as a channelization code. The plural Orthogonal Variable Spreading Factor ... | 05/30/2006 |
| 7050388 | Method and system for crosstalk cancellation Signals propagating in one communication channel can generate crosstalk interference in another communication channel. A crosstalk cancellation device can process the signals causing the crosstalk interference and generate a crosstalk cancellation signal that can co... | 05/23/2006 |
| 7043222 | FSK modulator using IQ up-mixers and sinewave coded DACs A radio transmitter system designed using an FSK modulator with IQ up-mixers and sinewave coded digital-to-analog converters (DACs). The radio transmitter system may include a frequency shift keying (FSK) coding logic circuit coupled to the inputs of an IQ modulatio... | 05/09/2006 |
| 7026965 | Separation enhanced Gray codes A Gray code decoder for decoding input numbers includes a first select circuit that selects an M-bit Gray code number from a M-bit Gray code having a one-bit separation I and a two-bit separation J. A second select circuit selects an N-bit Gray code number from a N-... | 04/11/2006 |
| 7020176 | Method and system for downlink channelization code allocation in a UMTS A method and system for downlink channelization code allocation or assignment in a Universal Mobile Telecommunication System (UMTS) are presented. The method and system generate an optimal channelization or Orthogonal Variable Spreading Factor Orthogonal Variable Sp... | 03/28/2006 |
| 7002903 | Automatic verification of Walsh code orthogonality A method of verifying that a CDMA code allocator maintains mutual orthogonality between all concurrently busy codes includes the steps of identifying a code being allocated by the allocator, and determining if the identified code is busy. It is also determined if an... | 02/21/2006 |
| 6965331 | Conversion arrangement and method for converting a thermometer code The invention relates to an arrangement for converting a binary input signal corresponding to an n-bit thermometer code into a binary output code different therefrom, having a first number of OR gate circuits, into the inputs of wh... | 11/15/2005 |
| 6940430 | Separation enhanced gray codes In general, in one aspect, the invention features a Gray code decoder for decoding input numbers according to a K-bit Gray code and a Gray code encoder for encoding input numbers according to the K-bit Gray code. The K-bit Gray code is constructed from a M-bit Gray ... | 09/06/2005 |
| 6876316 | Separation enhanced gray codes A method and computer program for generating a K-bit Gray code comprises (a) selecting a M-bit Gray code number from a M-bit Gray code having a one-bit separation I and a two-bit separation J; (b) selecting a N-bit Gray code number from a N-bit Gray code, wherein K=... | 04/05/2005 |
| 6801143 | Method and apparatus for generating gray code for any even count value to enable efficient pointer exchange mechanisms in asynchronous FIFO'S A method and apparatus for generating Gray code for any even count value to enable efficient pointer exchange mechanisms in asynchronous FIFO's. Allowing Gray code for any range of even count values provides the benefit of decreasing metastability when exchanging po... | 10/05/2004 |
| 6646579 | Method and device for generating OVSF code words A code word generator for OVSF codes, comprising an intermediate memory device (16) which is used to input a calculation index as a binary calculation index data word, a calculation device (17) which permutes the significant data bits of the calculation i... | 11/11/2003 |
| 6538585 | Distance-enhancing coding method The present invention pertains to a distance-enhancing coding method that can be applied to digital recording and digital communications. It improves the time-varying maximum transition run method used in a conventional distance-enhancing coding to avoid ... | 03/25/2003 |
| 6504495 | Clipping data values in a data processing system A clipping and quantization technique is described for producing clipped numbers in a range of 0 to N-1 (from unclipped numbers in a range of -0.5N to (1.5N-1)), where N is 2m and m is the bit length of the desired clipped and quantized number.... | 01/07/2003 |
| 6446102 | Method and device for high speed scale conversion A method and a device for high-speed scale conversion wherein a value N within a range of N1 and N2 is converted into a small value M within a range of M1 and M2. The method includes the step of obtaining an approximate value of M by loading the value (N-... | 09/03/2002 |
| 6262676 | Binary code converters and comparators A thermometer code converter for converting weightless binary tuples of 2 or higher dimensional arrays into a thermometer or aggregate code comprises a series of layers (16, 18) each made up of bit manipulation cells (10) which collectively cause set bits... | 07/17/2001 |
| 6225937 | Metastability resolved monolithic analog-to-digital converter An analog comparator compares an analog signal to be converted with an analog ramp signal. The output of the comparator enables a digital latch having a binary Gray code counter input. When the analog ramp equals the analog signal, the digital latch captu... | 05/01/2001 |
| 6025791 | Process for the transmission of a binary data flow having signaling lines that change their status based on grey coding Four parallel lines are provided for the guided transmission of a data flow with a high rate (sub-GHz range). Two data bits per transmission clock are transmitted via these lines. The other two remaining lines are used for signaling certain changes in bot... | 02/15/2000 |
| 5982308 | Technique for compensation for missing pulses when decoding gray code data in hard disk drive A decoding compensation circuit, which compensates for missing pulses when decoding the gray code written in a magnetic disk of a hard disk drive (HDD) includes: a central processing unit (CPU) for controlling the hard disk drive, a positive pulse detecti... | 11/09/1999 |
| 5959558 | Method and an arrangement relating to communication systems A coding scheme for coding information having a nonuniform probability distribution function. According to exemplary embodiments, a code word is assigned to the information corresponding to the peak level of the probability density function, and is referr... | 09/28/1999 |
| 5917439 | System for high speed track accessing of disk drive assembly The address of each track in a disk drive system is expressed in Gray code, and an appended bit of information is added to the Gray code, associated with the least significant bits thereof, the value of which is determined by the values of the most signif... | 06/29/1999 |
| 5657018 | Bar graph decoder outputting thermometer code A bar graph decoder includes input terminals to which 5-bit digital data is input, a logic circuit for outputting a thermometer code changing continuously at a constant ratio in response to the input data, and output terminals connected to the logic circu... | 08/12/1997 |
| 5399919 | Apparatus for detecting switch actuation Apparatus for generating an output signal in response to the change in state of any one of a plurality of input signals. The apparatus includes decoding means for each possible combination of input signals, and by an appropriate arrangement of these decod... | 03/21/1995 |
| 5329280 | Adjacent code system A digital counting circuit, including a binary counter supplying output sals to an adjacent code encoder that processes the received signals and transmits its output to a binary decoder. The encoder has a plurality of D-type flip-flop devices to which se... | 07/12/1994 |
| 5300930 | Binary encoding method with substantially uniform rate of changing of the binary elements and corresponding method of incrementation and decrementation A binary encoding method notably but not exclusively for the encoding of data elements designed to be represented sequentially, according to a preestablished order, for example in counters, inducing a uniform or substantially uniform mean changing rate fo... | 04/05/1994 |
| 5045854 | Integrated high speed synchronous counter with asynchronous read-out A high speed, synchronous counter which counts using a Gray code, Because Gray code counting has the unique property that only a single bit of the counter changes with each new count, the output of the counter may be latched at any time and the latched va... | 09/03/1991 |
| 5029305 | Method and apparatus for error correction in thermometer code arrays A method and apparatus for correcting errors in a thermometer code data array (32). A parallel A/D converter (22) comprises an array (26) of comparators and an encoder (30). The correction of errors in the data array (32) produced by the comparators (26) ... | 07/02/1991 |
| 5001479 | Gray code converter with error signal A method and circuit arrangement is disclosed for converting Gray code signals into counting pulses, forming a counter status, detecting interference signals infringing the Gray code and for forming an error signal with a network defining a finite automat... | 03/19/1991 |
| 4975698 | Modified quasi-gray digital encoding technique A modified quasi-Gray encoding technique for use in parallel analog-to-digital converters that significantly reduces errors resulting from multiple simultaneous inputs. The encoding technique converts a one-in-(2n -1) digital code into an n-bit... | 12/04/1990 |
