Class / Patent application number | Description | Number of patent applications / Date published |
455297000 | In vehicle | 7 |
20080280582 | RADIO RECEIVER HAVING IGNITION NOISE DETECTOR AND METHOD THEREFOR - An AM receiver including an AM demodulator for demodulating an AM signal received by an antenna coupled to the AM demodulator is provided. The AM receiver further includes a bandpass filter for receiving the demodulated signal and generating a bandpass filtered signal. The AM receiver further includes a moving average filter for receiving the bandpass filtered signal and generating a moving averaged signal and a highpass filter for receiving the moving averaged signal and generating a highpass filtered signal. The AM receiver further includes an averaging filter for receiving the highpass filtered signal and generating an averaged signal and a summer for receiving the averaged signal and the highpass filtered signal and generating a difference signal. The AM receiver further includes a comparator for generating a noise blanking signal based on a comparison of the difference signal with a threshold. | 11-13-2008 |
20090081980 | APPARATUS, SYSTEMS, AND METHODS FOR SUPPRESSING RADIO INTERFERENCE FROM A NOISE SOURCE VIA ACTIVE FILTERING - Apparatus, systems, and methods are provided for suppressing radio interference from a noise source. One apparatus includes a controller for commanding a noise source to dither its operating frequency, and a filter for receiving signals from the controller indicating the present operating frequency of the noise source and to filter radio signals having the same frequency as the present operating frequency while the operating frequency is dithered. A system includes an electric motor having an operating frequency, a controller for commanding the motor to dither its operating frequency, and a filter configured to receive signals indicating the present operating frequency of the motor and to filter radio signals having the same frequency as the present operating frequency while the operating frequency is dithered. One method includes dithering the operating frequency of a noise source and filtering signals having the same frequency as the operating frequency while it is dithered. | 03-26-2009 |
20100056093 | RADIO FILTERS FOR XM CHANNELS - A method of providing user-defined satellite radio filtering in a satellite radio system entails receiving at the satellite radio system a user-defined filter specifying one or more satellite channels to block and, when receiving satellite radio signals, making the one or more satellite channels to block unavailable for listening by the user. The user-defined filter may be received via direct user input, a portable storage device, or a wireless network. | 03-04-2010 |
20120003950 | METHOD AND SYSTEM FOR A RADIO TRANSMISSION EMULATOR - The present invention relates to a method and system for a radio transmission emulator. In one embodiment, the present invention includes a radio transmission emulator system. The radio transmission emulator system includes a radio transmission emulator, an automobile, and/or a radio data analysis unit. The automobile can include a radio receiving unit. The radio transmission emulator generates a field simulation signal which simulates interferences. The field simulation signal is transmitted from the radio transmission emulator to the radio receiving unit. The radio receiving unit generates the radio data based on the field simulation signal. The radio data analysis unit analyzes the radio data to determine whether adjustments should be made to the radio receiving unit. | 01-05-2012 |
20120282873 | Device and System for Suppression of Interference Linked to Distant Paths - An onboard device for receiving a signal coming from an aircraft at a distance d from the device, said signal resulting from the combination of multiple propagation paths, one of the paths corresponding to the main echo of the transmitted signal, said device including an equalizer of processing depth T. The device includes means for estimating the distance covered by the second path, means for deducing therefrom a delay value τ associated with it, means for estimating when τ is greater than or equal to T the interfering signal associated with the main echo and for reducing the contribution of said signal to the total level of interference received. Also a system of communication between aircraft using the onboard device. | 11-08-2012 |
20140357212 | FREQUENCY CONTROL APPARATUS - A frequency control apparatus includes: an input operation unit which detects a presence/absence of an input of a predetermined operation by an operator; and a control unit which, when the input of the predetermined operation by the input operation unit is detected, calculates radio frequencies, each of the radio frequencies being where a minimum value of differences with respect to multiplied frequencies of a current drive frequency of a device is less than or equal to a predetermined value, and which changes the current drive frequency of the device so that minimum values of differences between the calculated radio frequencies and multiplied frequencies of the changed drive frequency are greater than or equal to a predetermined value. The control unit changes the drive frequency to lessen a change width before and after the change by either increasing the drive frequency or decreasing the drive frequency. | 12-04-2014 |
20160036558 | Connected vehicles adaptive security signing and verification methodology and node filtering - We introduce a connected vehicles adaptive security signing and verification methodology. We also introduce an adaptive node filtering at receiver, using noise levels and received signal strength. This invention addresses two important pillars in connected vehicle technology and autonomous cars: The first one is related to the security 1609.2 format and its main two functions: signing and verification. The second one explains how the noise level and signal strength can be used to filter undesired connected nodes. In this presentation, we provide various examples and variations on these topics. | 02-04-2016 |