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| Number | Title | Issue Date |
| 7786906 | Modulation coding and decoding Methods and apparatus are provided for modulation coding a stream of binary input data. A 4-ary enumerative encoding algorithm is applied to the input bit-stream to produce a succession of 4-ary output symbols. The 4-ary algorithm is operative to simultaneously enco... | 08/31/2010 |
| 7696908 | Techniques for reducing error propagation using modulation codes having a variable span Techniques are provided for reducing error propagation in encoded data using Fibonacci modulation codes. The Fibonacci modulation codes have a Fibonacci base with a variable span that limits error propagation. Some of the elements in the Fibonacci base have a larger... | 04/13/2010 |
| 7583209 | System and method for signaling on a bus using forbidden pattern free codes Embodiments of our invention describe the method for producing forbidden pattern free (FPF) codewords using an encoder-decoder (CODEC). First, the method encodes a dataword to produce a FPF codeword by mapping dataword to a Fibonacci Numeral System space. Further, t... | 09/01/2009 |
| 7205913 | Efficient data-directed scrambler for noise-shaping mixed-signal converters An efficient data-directed scrambler is provided for processing digital signals having an unequally-weighted code. The data-directed scrambler includes inputs for receiving unequally-weighted bits of an input signal, outputs for supplying N scrambled bits of an outp... | 04/17/2007 |
| 7129863 | Interval modulation coding The design of communication and storage systems requires a choice of modulation and coding. In conventional storage and communication systems, the commonly used modulation scheme is called Non Return to Zero (NRZ) and the commonly used codes are called Run Length Li... | 10/31/2006 |
| 7071851 | Techniques for implementing non-uniform constraints in modulation encoded data Non-uniform modulation encoding techniques are provided to prevent data from containing bit patterns that are prone to errors during read back. Modulation encoding is performed on a data stream to remove error prone bit patterns. Unconstrained data, such as error ch... | 07/04/2006 |
| 7064687 | Techniques for modulating data using short block encoders Techniques are provided for applying modulation constraints to data streams using a short block encoder. A short block encoder encodes a subset of the bits in a data stream. Then, the even and odd interleaves in a data stream are separated into two data paths. A fir... | 06/20/2006 |
| 6930622 | Voltage level converter device A voltage level converter device for the conversion of an input signal, which is at a first voltage level, into an output signal, which is at a second voltage level that differs from the first voltage level, where the voltage level converter device has at least one ... | 08/16/2005 |
| 6628212 | State-driven over-sampling manchester decoder A method and apparatus for a state-driven decoder for decoding a Manchester encoded signal. The decoder comprises an input sampling stage, an over-sampling clock, and a digital logic state machine. The over-sampling clock operates at a frequency which is ... | 09/30/2003 |
| 5812072 | Data conversion technique The present invention discloses a mathematical technique which finds substantial utility in electrical engineering, particularly in the general field of data transformation, which occurs in applications such as data encryption and data compression. The te... | 09/22/1998 |
| 5760718 | Encoding arrangement for encoding a sequence of (N-1)-bit information words into a sequence of N-bit channel words, and a deciding arrangement for decoding a sequence of N-bit channel words in a sequence of (N-1)-bit information words Encoding arrangement for encoding a sequence of (n-1)bit information words into a sequence of n-bit channel words, and a decoding arrangement for decoding a sequence of n-bit channel words into a sequence of (n-1)-bit information words. The encoding arran... | 06/02/1998 |
| 4818969 | Method of fixed-length binary encoding and decoding and apparatus for same A novel method of adapting Fibonacci number weighting to raw binary code data of variable length to use the code as a fixed length code by using only those code sequences with a fixed number of cells rather than a fixed number of bits, converting the code... | 04/04/1989 |
| 4290051 | Device for reducing irrational-base codes to minimal form A device for reducing irrational-base codes to a minimal form, comprising "n" identical functional cells whereof each Bth cell incorporates a flip-flop with a count input and an AND convolution element intended to evaluate the possibility of performing th... | 09/15/1981 |
| 4187500 | Method and device for reduction of Fibonacci p-codes to minimal form An arrangement for reduction of Fibonacci p-codes to minimal form, which performs, in succession, all convolutions and all devolutions of bits of the original Fibonacci p-code of a number, whereto the original combination of binary signals corresponds. Th... | 02/05/1980 |
| 4159529 | Fibonacci code adder A Fibonacci code adder comprising an n-digit half-adder which includes at least two inputs through which addends of numbers represented in the Fibonacci code minimal form are introduced and also includes intermediate sum and carry outputs coupled to analo... | 06/26/1979 |
| 4032979 | Method and system for encoding and decoding digital data A digital data encoding and decoding method and system is disclosed, with particular reference to magnetic records, in which bits are encoded in groups. Three out of four, two-bit combinations are encoded respectively by three patterns of transition place... | 06/28/1977 |
