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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620372 |
Communication device, method for controlling communication, game machine, and game system |
Nov. 17, 2009 |
| 7603080 |
Multiple channel wireless communication system |
Oct. 13, 2009 |
| 7599887 |
Method and system for prepaid roaming minutes |
Oct. 6, 2009 |
| 7593695 |
RF transceiver incorporating dual-use PLL frequency synthesizer |
Sep. 22, 2009 |
| 7593737 |
Transportation management system, transportation management method, communication sheet, and communication antenna |
Sep. 22, 2009 |
| 7586975 |
Code tracking apparatus and method under a multi-path environment in a DS-CDMA communication system |
Sep. 8, 2009 |
| 7570919 |
Transmitter, receiver, and radio communications system and method |
Aug. 4, 2009 |
| 7570918 |
Multimedia device for motor vehicle |
Aug. 4, 2009 |
| 7555034 |
Apparatus and method for detecting timing error based on cyclic correlation |
Jun. 30, 2009 |
| 7551891 |
Method for detecting UWB pulse sequences without local pulse generation |
Jun. 23, 2009 |
| 7548729 |
Techniques enabling fast transmit rates and antenna adaptation for wireless networks based on explicit feedback |
Jun. 16, 2009 |
| 7539247 |
VSB transmission system for processing supplemental transmission data |
May. 26, 2009 |
| 7539251 |
Communications system with selective baseband pilot injected carrier (BPIC) and input data modulation and related methods |
May. 26, 2009 |
| 7539252 |
Communications system with baseband pilot injected carrier (BPIC) modulation/demodulation and frame recovery and related methods |
May. 26, 2009 |
| 7532861 |
Connection interface for conveying RF, data, and power between electronic devices |
May. 12, 2009 |
| 7522879 |
Communication apparatus and associated methodology of performing operator initiated near field communication |
Apr. 21, 2009 |
| 7522666 |
VSB transmission system for processing supplemental transmission data |
Apr. 21, 2009 |
| 7477700 |
Transmitting RF signals employing improved high-level combinations of analog FM and digital signals |
Jan. 13, 2009 |
| 7463862 |
Methods and apparatus to integrate image rejection into quadrature mixers |
Dec. 9, 2008 |
| 7398056 |
Channel estimation applique for multiple antenna wireless communications |
Jul. 8, 2008 |
| 7392018 |
Channel estimation applique for wireless communications |
Jun. 24, 2008 |
| 7376173 |
Unambiguously encoding and decoding signals for wireless channels |
May. 20, 2008 |
| 7359671 |
Multiple channel wireless communication system |
Apr. 15, 2008 |
| 7356343 |
Emergency location transceivers (ELT) |
Apr. 8, 2008 |
| 7330451 |
Code division multiple access communication system and method |
Feb. 12, 2008 |
| 7324798 |
2.sup.N-order sub-harmonic frequency modulator having high carrier suppression ratio and direct conversion transmitter using the same |
Jan. 29, 2008 |
| 7308104 |
Forward multiple scrambling code generating method and apparatus |
Dec. 11, 2007 |
| 7280802 |
FM transmitter and power supply/charging assembly for MP3 player |
Oct. 9, 2007 |
| 7272358 |
Channelization scheme for wireless local area networks |
Sep. 18, 2007 |
| 7263713 |
Television signal distributor apparatus, receiver apparatus, television signal transmission system and method |
Aug. 28, 2007 |
| 7260361 |
Locating interfering devices in wireless networks using channel adaptation metrics |
Aug. 21, 2007 |
| 7242906 |
FM transmitter and power supply/charging assembly for MP3 player |
Jul. 10, 2007 |
| 7239846 |
Up-conversion modulation loop for multi-mode mobile communication |
Jul. 3, 2007 |
| 7231266 |
Digital control device and program |
Jun. 12, 2007 |
| 7221911 |
Multi-band ultra-wide band communication method and system |
May. 22, 2007 |
| 7209746 |
Apparatus and method for wireless video and audio transmission utilizing a minute-power level wave |
Apr. 24, 2007 |
| 7187716 |
Vehicle mounted DSRC apparatus |
Mar. 6, 2007 |
| 7181165 |
Local wireless audio signal RF transmitter and receiver having a single downconverter without need for IF carrier |
Feb. 20, 2007 |
| 7171184 |
Method and apparatus for a gain controlled mixer |
Jan. 30, 2007 |
| 7155171 |
Vector network analyzer applique for adaptive communications in wireless networks |
Dec. 26, 2006 |
| 7146178 |
System and method for accessing local services with a mobile terminal |
Dec. 5, 2006 |
| 7139535 |
Signal processing of an amplitude-modulated and/or phase-modulated high-frequency signal |
Nov. 21, 2006 |
| 7133641 |
Wireless communication RF circuit and communication apparatus including the same |
Nov. 7, 2006 |
| 7130581 |
Wireless data communication device and communication system including such a device |
Oct. 31, 2006 |
| 7110720 |
Local area internet radio receiver/transmitter |
Sep. 19, 2006 |
| 7095866 |
Wireless 900 MHz broadcast link |
Aug. 22, 2006 |
| 7095996 |
Wireless communication system, and demodulation method and data rate control method therefor |
Aug. 22, 2006 |
| 7085327 |
Phasor fragmentation circuitry and method for processing modulated signals having non-constant envelopes |
Aug. 1, 2006 |
| 7076204 |
Multiple channel wireless communication system |
Jul. 11, 2006 |
| 7068984 |
Systems and methods for amplification of a communication signal |
Jun. 27, 2006 |
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