Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 4451819 | Method and apparatus for decoding binary data An apparatus for decoding binary data from one form to another has a register adapted to receive the input bit signals. A plurality of data paths are connected to the register, with a delay means in at least one of the paths. Decoding means is adapted to ... | 05/29/1984 |
| 4425562 | Device for coding signals which are distributed between a number of channels A device for introducing digital data into a medium having bivalent or multivalent states and having a coding device and a commutation device. The coding device receives under the control of a first clock pulse series, data signals and forms therefrom a n... | 01/10/1984 |
| 4413251 | Method and apparatus for generating a noiseless sliding block code for a (1,7) channel with rate 2/3 An algorithm and the hardware embodiment for producing a run length limited code useful in magnetic recording channels are described. The system described produces sequences which have a minimum of 1 zero and a maximum of 7 zeros between adjacent 1's. The... | 11/01/1983 |
| 4387364 | Method and apparatus for reducing DC components in a digital information signal A method of reducing DC components in a digital information signal comprised of a plurality of 8-bit data words by converting each of the 8-bit data words to a 10-bit data word, comprises the steps of grouping the 10-bit data words by weight in accordance... | 06/07/1983 |
| 4311989 | Binary converter in particular for transmitters and receivers of reduced redundancy image data A converter for converting input binary words into respective code binary words according to a given transcoding law, and application of the converter to reduced redundancy image transmission systems (e.g. facsimile systems). A main counter (3) is connect... | 01/19/1982 |
| 4115768 | Sequential encoding and decoding of variable word length, fixed rate data codes Apparatus for converting binary digital data from one form to another according to a variable word length code of fixed rate comprises word position indicating circuitry for indicating predetermined word position states of data in a data storage unit and ... | 09/19/1978 |
| 3995264 | Apparatus for encoding and decoding binary data in a modified zero modulation data code An apparatus for processing data employs a modification of a zero modulation code. The zero modulation code has a waveform that is symmetrical about a zero signal level within narrow defined limits. Each data digit, 1 or 0, is encoded into two NRZI digits... | 11/30/1976 |
