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Class Information
Number: 455/42
Name: Telecommunications > Transmitter and receiver at separate stations > Frequency or phase modulation
Description: Subject matter in which the intelligence or information to be transmitted is applied to a sine wave carrier in such a manner that the instantaneous frequency and/or phase angle of the sine wave carrier is caused to depart from a reference value by an amount proportional to the instantaneous amplitude of the modulating (intelligence) signal.

Sub-classes under this class:

Class Number Class Name Patents
455/45 Via subcarrier 229
455/43 With modification of frequencies of analog signal passed (e.g., pre-emphasis and de-emphasis) 77
455/44 With stated modulation index 45

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8711956 Modified continuous phase modulation communications system and related methods Apr. 29, 2014
8705496 Method and apparatus for controlling transmission and reception of dedicated pilots according to MCS level in a wireless communication system Apr. 22, 2014
8706030 Radio frequency-communication device and method for operating the same Apr. 22, 2014
8688045 FM transmitter and non-FM receiver integrated on single chip Apr. 1, 2014
8670720 Devices and methods for phase shifting a radio frequency (RF) signal for a base station antenna Mar. 11, 2014
8655396 Methods and apparatus for power allocation and/or rate selection for UL MIMO/SIMO operations with PAR considerations Feb. 18, 2014
8644765 Beamforming using predefined spatial mapping matrices Feb. 4, 2014
8639462 Method and system for determining the time-of-flight of a signal Jan. 28, 2014
8633796 Information processing system, control information processing device, and program Jan. 21, 2014
8630265 Method and apparatus for accommodating higher order modulation in wireless communication Jan. 14, 2014
8611820 Signal separation for energy harvesting Dec. 17, 2013
8598992 Self-calibrating RFID transponder Dec. 3, 2013
8600419 Radio channel allocation and link adaptation in cellular telecommunication system Dec. 3, 2013
8532575 System, method and apparatus for inter-vehicle communication Sep. 10, 2013
8527003 System and apparatus for high data rate wireless communications Sep. 3, 2013
8515474 System and method for scheduling users on a wireless network Aug. 20, 2013
8478279 Closed-loop Transmission power control method and radio base station apparatus Jul. 2, 2013
8457178 Frequency offset estimator Jun. 4, 2013
8442438 Wireless transmitter and related multimedia system May. 14, 2013
8437442 Method and apparatus for generating a carrier frequency signal May. 7, 2013
8406692 Polar transmitter amplifier with variable output power Mar. 26, 2013
8406693 Apparatus and method for modulating an amplitude, phase or both of a periodic signal on a per cycle basis Mar. 26, 2013
8401477 System, method and apparatus for communicating with vehicle occupants Mar. 19, 2013
8378788 Variable frequency tag Feb. 19, 2013
8369786 Radio frequency communication device and method for operating the same Feb. 5, 2013
8358178 Phase modulation apparatus and method Jan. 22, 2013
8358974 Method and circuit for amplitude modulation of a carrier signal with a specified modulation factor Jan. 22, 2013
8340047 Integrated antenna device, integrated demodulating device, and integrated receiving device Dec. 25, 2012
8331856 Underwater camera communication system Dec. 11, 2012
8320947 Radio channel allocation and link adaptation in cellular telecommunication system Nov. 27, 2012
8315240 Enhanced uplink rate indicator Nov. 20, 2012
8306476 Digital controller and transmitter for portable electronic device Nov. 6, 2012
8306568 Solution for queue handling Nov. 6, 2012
8285215 Radio vision electronic network / analog output / viewing system Oct. 9, 2012
8270365 Method and apparatus for reporting inter-frequency measurement using RACH message in a mobile communication system Sep. 18, 2012
8254988 Method of controlling wireless communication system and wireless communication system Aug. 28, 2012
8244192 System and method for wireless communication of magnetic resonance data Aug. 14, 2012
8233451 Method and apparatus for accommodating higher order modulation in wireless communication Jul. 31, 2012
8222966 System, method and apparatus for an open loop calibrated phase wrapping phase modulator for wideband RF outphasing/polar transmitters Jul. 17, 2012
8213870 Beamforming using predefined spatial mapping matrices Jul. 3, 2012
8199027 Systems and methods for utility meter reading Jun. 12, 2012
8200158 System, method and apparatus for communicating with vehicle occupants Jun. 12, 2012
8193871 FM pulse shaping Jun. 5, 2012
8195094 Cognitive modulators Jun. 5, 2012
8185064 Adaptive modulation control system and wireless communication apparatus May. 22, 2012
8177131 Data communication system, device for executing IC card function, control method for the device, and information processing terminal May. 15, 2012
8169244 Crossing input signal modulator May. 1, 2012
8160119 Method and device for anti-interference fighting in a telecommunications system Apr. 17, 2012
8160524 Signal receiving apparatus and control method thereof Apr. 17, 2012
8160566 Message sender controllable messaging system Apr. 17, 2012

1 2 3 4 5 6

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