Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 375/334
Name: Pulse or digital communications > Receivers > Angle modulation > Frequency shift keying
Description: Subject matter where the carrier has been modulated by shifting its frequency in accordance with the pulses transmitted.










Sub-classes under this class:

Class Number Class Name Patents
375/336 Minimum shift keying 107
375/335 More than two frequencies 125
375/337 Separate mark and space channels 42


Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8086203 Method and system for wireless local area network (WLAN) phase shifter training Dec. 27, 2011
8060051 Radio communication apparatus and frequency offset calculation method Nov. 15, 2011
8023591 Method and system for a shared GM-stage between in-phase and quadrature channels Sep. 20, 2011
7983310 Methods for in-band signaling through enhanced variable-rate codecs Jul. 19, 2011
7983329 Communication apparatus and method of controlling same Jul. 19, 2011
7983648 Low intermediate frequency receiver and the same method thereof Jul. 19, 2011
7933358 GFSK/FSK modulation circuit and related method implemented in a digital manner Apr. 26, 2011
7920648 Sample rate adaption in signal processing Apr. 5, 2011
7916813 Receiver device Mar. 29, 2011
7903764 Integrated burst FSK receiver Mar. 8, 2011
7881409 Demodulator, chip and method for digitally demodulating an FSK signal Feb. 1, 2011
7881692 Integrated low-IF terrestrial audio broadcast receiver and associated method Feb. 1, 2011
7876852 Modulator device for generating an optical transfer signal modulated by binary signal Jan. 25, 2011
7864675 Automation device Jan. 4, 2011
7860200 Communications system using adaptive filter that is selected based on output power Dec. 28, 2010
7860192 FSK demodulator, FM demodulator, and related method with a build-in band-pass filter Dec. 28, 2010
7860187 FSK signal modulator for producing a binary FSK signal Dec. 28, 2010
7817081 Radar apparatus, method for controlling the same, and vehicle including the same Oct. 19, 2010
7769091 Communication system Aug. 3, 2010
7751504 Frequency modulation-frequency shift keying demodulator Jul. 6, 2010
7746939 Methods and apparatus for encoding information in a signal by spectral notch modulation Jun. 29, 2010
7742542 Phase correlated quadrature amplitude modulation Jun. 22, 2010
7738851 Harmonic rejection mixer Jun. 15, 2010
7733991 Apparatus for determining a frequency offset error and receiver based thereon Jun. 8, 2010
7729411 Joint detector in a code division multiple access radio receiver Jun. 1, 2010
7715500 FSK signal detector for detecting FSK signal through digital processing May. 11, 2010
7702038 Radio frequency (RF) receiver with amplitude-shifted keying/frequency-shifted keying (ASK/FSK) duty cycle optimization algorithm Apr. 20, 2010
7697592 Spread spectrum clock generating apparatus Apr. 13, 2010
7689189 Circuit and method for signal reception using a low intermediate frequency reception Mar. 30, 2010
7684519 Method and system for adjusting DC offset slice point in an RF receiver Mar. 23, 2010
7664205 Frequency-shift-keying demodulator and method of frequency-shift-keying Feb. 16, 2010
7653152 Frequency measurement system for low modulation index digital FM/PM communication Jan. 26, 2010
7646827 Demodulation of a digitally frequency-modulated analog received signal by evaluation of the time intervals between the zero crossings Jan. 12, 2010
7639762 Method for receiving and recovering frequency shift keyed symbols Dec. 29, 2009
7616606 Mechanism for avoiding triggering silent radio squelch circuits Nov. 10, 2009
7616710 Frequency offset estimating method and receiver employing the same Nov. 10, 2009
7567626 Radio receiver for the reception of data bursts which are modulated with two modulation types Jul. 28, 2009
7558339 Asynchronous ZCD demodulator/decoder Jul. 7, 2009
7508890 Apparatus and method for FSK demodulation with integrated time and frequency tracking Mar. 24, 2009
7508884 System and method for communicating data using constant amplitude equalized waveform Mar. 24, 2009
7492836 Wireless data communication demodulation device and demodulation method Feb. 17, 2009
7482862 Demodulation method and apparatus Jan. 27, 2009
7477679 Spread spectrum demodulator employing frequency detection Jan. 13, 2009
7474147 Frequency shift keying signal demodulator method and apparatus Jan. 6, 2009
7460618 System and method for obtaining accurate symbol rate and carrier phase, frequency, and timing acquisition for minimum shift keyed waveform Dec. 2, 2008
7439799 Frequency shift keying demodulator robust for frequency offset Oct. 21, 2008
7428274 Receiver of frequency-modulated signals with digital demodulator Sep. 23, 2008
7400904 Dual mode AM-FM receiver with I-Q decoding, such as for utility data collection Jul. 15, 2008
7397300 FSK demodulator system and method Jul. 8, 2008
7386065 Voltage controlled oscillator (VCO) suitable for use in frequency shift keying (FSK) system Jun. 10, 2008

1 2 3 4 5 6 7 8 9










 
 
  Recently Added Patents
Chair
Water slide
Transistor and display device
Portion of a display panel with an ambiguous facial expression icon
Targeting agents for enhancing radiation therapy
Semiconductor device and manufacturing method thereof
Polyester resin for toner, electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming met
  Randomly Featured Patents
Method for negotiating and transmitting length information of location update time
Rechargeable battery assembly
Method and apparatus for efficient communications using active messages
Method for vapor phase synthesis of diamond
Apparatus for identifying the position of a body
Macular and scleral support surgical device for ocular restraint in progressive high myopia
Security face plate for cabinet lock
Programmable multiple phase AC power supply
Window component extrusion 8630
Adapter coupling device