| SPiDCOM Technologies Patent applications |
| Patent application number | Title | Published |
|---|
| 20120002747 | METHOD AND DEVICE FOR REDUCING QUANTIFICATION NOISE FOR TRANSMITTING A MULTI-CARRIER SIGNAL - A method and apparatus to reduce the level of quantification noise when transmission power varies with frequency. Power variation is carried out in the analog domain by filtering a frequency band and attenuating a complementary band in two signal analog-processing paths. More precisely, the method for reducing the quantification noise for transmitting a multi-carrier signal comprises an IFFT conversion step, a digital-to-analog conversion step and an analog-processing step of the signal frequencies on a band having a maximal frequency. Moreover, the analog processing step includes at least two processing paths in parallel to the analog signal, in which: for at least one first path, the signal is filtered so as to retain only the frequencies of a low-frequency band and, in parallel in at least one second path, the signal is subjected to gain, amplification or gain attenuation and, in a final step, the signals from the paths are summed. | 01-05-2012 |
| 20100074243 | MANAGING COEXISTENCE AMONG SIGNALING PROTOCOLS ON A SHARED MEDIUM - A method is described for communicating among multiple devices over a shared communication medium. The method includes, in a schedule among multiple subsets of the devices that includes at least one respective time slot for each subset, transmitting from at least one of the devices in a given subset a presence signal associated with the given subset within a time slot for the given subset. A presence signal associated with a given subset is configured to indicate the presence of at least one device in the given subset. The method also includes communicating among devices in a given subset based on presence signals detected from one or more devices in at least one different subset. | 03-25-2010 |
| 20090323781 | METHOD AND EQUIPMENT FOR TRANSMITTING A SIGNAL BY FILTERING IN A MIRROR BAND - The invention relates in particular to a method for transmitting an analogue signal in a predetermined frequency band on the basis of an initial digital signal sampled at a sampling frequency, said method comprising in particular a step of modifying the initial analogue signal so as to generate a modified analogue signal having a modified spectrum in said predetermined frequency band. According to the invention, the modifying step comprises a filtering step consisting in selecting said predetermined frequency band from said plurality of mirror frequency bands. | 12-31-2009 |
