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Class Information
Number: 455/214
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency or phase modulation > With particular discriminator or detector
Description: Subject matter in which the system includes the combination of a frequency or phase-modulation type receiver, which may be broadly claimed, with a specific discriminator or detector means.

Sub-classes under this class:

Class Number Class Name Patents
455/215 Superregenerative 19

Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8611839 Robust signal detection using correntropy Dec. 17, 2013
8600312 Method and apparatus for spectral sensing Dec. 3, 2013
8594574 Digital radio data system receiver methods and apparatus Nov. 26, 2013
8565676 Data exchange initiated by tapping devices Oct. 22, 2013
8559564 Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system Oct. 15, 2013
8543079 Receiver and integrated AM-FM/IQ demodulators for gigabit-rate data detection Sep. 24, 2013
8526898 Wideband tuner architecture Sep. 3, 2013
8521198 Dynamic LNA switch points based on channel conditions Aug. 27, 2013
8498601 Polar receiver using injection-locking technique Jul. 30, 2013
8406717 Digital FM stereo receiver architecture to recover carrier information based on stereo or mono signals Mar. 26, 2013
8396437 Detection of false modulated signals in wireless communications Mar. 12, 2013
8346290 Uplink power control for wireless systems Jan. 1, 2013
8315568 Digital radio data system receiver methods and apparatus Nov. 20, 2012
8306493 Pilot based adaptation for FM radio receiver Nov. 6, 2012
8260233 FM receiver Sep. 4, 2012
8249542 Receiver and integrated AM-FM/IQ demodulators for gigabit-rate data detection Aug. 21, 2012
8224269 Vector modulator calibration system Jul. 17, 2012
8217683 Phase-detector for detecting phase difference of [PI]2N Jul. 10, 2012
8170151 FSK receiver May. 1, 2012
8116799 Method and system for controlling power in a communication system Feb. 14, 2012
8112051 Method and system for false frequency lock free autonomous scan in a receiver Feb. 7, 2012
8099050 Digital radio data system receiver methods and apparatus Jan. 17, 2012
8085877 Method and system for quadrature local oscillator generator utilizing a DDFS for extremely high frequencies Dec. 27, 2011
8068563 Systems and methods for frequency offset correction in a digital radio broadcast receiver Nov. 29, 2011
8060040 True root-mean-square detection with a sub-threshold transistor bridge circuit Nov. 15, 2011
8060051 Radio communication apparatus and frequency offset calculation method Nov. 15, 2011
8027652 Radio front end Sep. 27, 2011
8019021 Carrier to interference and noise ratio (CINR) estimating method and device using preamble in orthogonal frequency division multiplexing (OFDM) Sep. 13, 2011
7920652 Orthogonality detector, and quadrature demodulator and sampling quadrature demodulator using detector thereof Apr. 5, 2011
7890055 Touch field compound field detector personal ID Feb. 15, 2011
7885628 FM tuner Feb. 8, 2011
7847597 Precision frequency change detector Dec. 7, 2010
7844241 High linearity frequency conversion system and method Nov. 30, 2010
7835713 Method and system for avoiding detection of false modulated signals in wireless communications Nov. 16, 2010
7650125 System and method for SAP FM demodulation Jan. 19, 2010
7639762 Method for receiving and recovering frequency shift keyed symbols Dec. 29, 2009
7633319 Digital QP detecting apparatus, spectrum analyzer having the same, and digital QP detecting method Dec. 15, 2009
7620371 Transmitter signal strength indicator Nov. 17, 2009
7587170 Digital radio data system receiver methods and apparatus Sep. 8, 2009
7577219 Apparatus for communications Aug. 18, 2009
7567533 Packet detection system, packet detection device, and method for receiving packets Jul. 28, 2009
7565150 Reducing DSP schedule bottlenecks in a wireless communication system Jul. 21, 2009
7512395 Receiver and integrated AM-FM/IQ demodulators for gigabit-rate data detection Mar. 31, 2009
7430247 Carrier frequency detection for N-ary phase modulated signal Sep. 30, 2008
7406302 Digital FM stereo receiver architecture Jul. 29, 2008
7376207 Apparatus for receiving and recovering frequency shift keyed symbols May. 20, 2008
7373123 Multiple tuners in a single radio receiver May. 13, 2008
7299022 Carrier detecting circuit and infrared communication device using same Nov. 20, 2007
7292093 Envelope detector with DC level shifting Nov. 6, 2007
7272368 System and method for reduced deviation time domain FM/PM discriminator to achieve a reduced bandwidth frequency or phase modulation communications channels Sep. 18, 2007

1 2 3 4 5 6 7

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