Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7177365 | Space-time trellis code for orthogonal frequency division multiplexing (OFDM) A communication system for transmitting encoded signals over a communication channel is disclosed. The system includes a transmitter, which has a source that is configured to output a plurality of input signals. The transmitter also includes an encoder that is confi... | 02/13/2007 |
| 6177867 | System for wireless communication between components of a vehicle A device on a motor vehicle is controlled by selecting a function for the device to perform. The selection is conveyed to a control circuit which wirelessly transmits a message using the Digital Enhanced Cordless Telecommunications protocol, wherein the m... | 01/23/2001 |
| 5426432 | IC card An IC card for outputting attribute information includes ROMs, a connector interfacing with an external unit, transmitting/receiving circuitry for exchanging control signals, address signals, and data, data output buffer for the ROMs mode control circuit ... | 06/20/1995 |
| 5412689 | Modal propagation of information through a defined transmission medium A method and system are provided for transmission of m information signal combinations over a known transmission medium at a high rate of speed without crosstalk between data transferred through the transmission medium. The technique employed is to conver... | 05/02/1995 |
| 5239560 | Conveying digital data in noisy, unstable, multipath environments An decoding system for transmitting a signal through a noisy, unstable, mipath environment, in which the signal consisting of eight possible symbols is encoded using four of eight possible frequencies in an orthogonal Hadamard matrix, transmitted through... | 08/24/1993 |
| 5208598 | Digital pulse generator using leading and trailing edge placement A digital architecture for a pulse generator includes a triggerable voltage controlled oscillator (VCO) with two alternative sources of frequency control voltage, an internal DAC or a phase frequency comparison with an external timebase. In a top octave o... | 05/04/1993 |
