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Class Information
Number: 375/238
Name: Pulse or digital communications > Pulse width modulation
Description: Subject matter in which the width of a transmitted pulse conveys the transmitted information.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620095 |
RF modem utilizing saw device with pulse shaping and programmable frequency synthesizer |
Nov. 17, 2009 |
| 7613255 |
Method for estimating communication conditions affecting an UWB wireless link |
Nov. 3, 2009 |
| 7598895 |
System and method of altering a PWM carrier power spectrum |
Oct. 6, 2009 |
| 7590087 |
Methods for wireless data transmission between a base station and one or more transponders |
Sep. 15, 2009 |
| 7590177 |
Method and system for receiving pulse width keyed signals |
Sep. 15, 2009 |
| 7587002 |
Wireless transmitting and receiving device and method |
Sep. 8, 2009 |
| 7580532 |
Multi-channel pulse width modulation apparatus |
Aug. 25, 2009 |
| 7570576 |
Detection and mitigation of temporary (bursts) impairments in channels using SCDMA |
Aug. 4, 2009 |
| 7570693 |
Low noise digital to pulse width modulated converter with audio applications |
Aug. 4, 2009 |
| 7570713 |
System and method for anticipatory receiver switching based on signal quality estimation |
Aug. 4, 2009 |
| 7561808 |
System and method of using variable pulses for symbology |
Jul. 14, 2009 |
| 7551669 |
System for multiplexing independent signals |
Jun. 23, 2009 |
| 7535957 |
Transmitter circuit, receiver circuit, clock data recovery phase locked loop circuit, data transfer method and data transfer system |
May. 19, 2009 |
| 7532082 |
Synchronization circuit for synchronizing PWM modulators |
May. 12, 2009 |
| 7518349 |
Current multiplier/divider-configured feed-forward compensation for buck-mode converter controller with programmed switching frequency |
Apr. 14, 2009 |
| 7508873 |
Digital amplifier, pulse width modulator thereof and method for reducing pop noise for the same |
Mar. 24, 2009 |
| 7505516 |
Ultra wide band (UWB) synchronisation search |
Mar. 17, 2009 |
| 7495428 |
Pulse generator, timing generator, and pulse width adjusting method |
Feb. 24, 2009 |
| 7487266 |
Communication system and method, and distributed control system and method |
Feb. 3, 2009 |
| 7483483 |
Ultra-wideband communication apparatus and methods |
Jan. 27, 2009 |
| 7479840 |
Digital pulse width controlled oscillation modulator |
Jan. 20, 2009 |
| 7480330 |
Method and apparatus to perform modulation using integer timing relationships between intra symbol modulation components |
Jan. 20, 2009 |
| 7480331 |
Method and device for pulse width modulation |
Jan. 20, 2009 |
| 7457617 |
CMOS wireless transceiver with programmable characteristics |
Nov. 25, 2008 |
| 7453298 |
PWM controller and method therefor |
Nov. 18, 2008 |
| 7451026 |
Control unit for controlling and/or regulating at least one vehicle function |
Nov. 11, 2008 |
| 7450637 |
Ultra-wideband communication apparatus and methods |
Nov. 11, 2008 |
| 7433403 |
Pulse width modulation method for a power converter |
Oct. 7, 2008 |
| 7433404 |
Apparatus for higher resolution pulse width modulation duty cycle |
Oct. 7, 2008 |
| 7430252 |
Apparatus and method for WGIO phase modulation |
Sep. 30, 2008 |
| 7426123 |
Finite state machine digital pulse width modulator for a digitally controlled power supply |
Sep. 16, 2008 |
| 7425853 |
Systems and methods for pulse width modulating asymmetric signal levels |
Sep. 16, 2008 |
| 7420824 |
Method of designing an RPWM inverter with unwanted harmonic elimination |
Sep. 2, 2008 |
| 7418297 |
Frame length modulation and pulse position modulation system |
Aug. 26, 2008 |
| 7394311 |
Apparatus and method for reduced sample rate class S RF power amplifier |
Jul. 1, 2008 |
| 7394875 |
Beaulieu series approach to optimal UMTS RACH preamble detection estimation |
Jul. 1, 2008 |
| 7392044 |
Wireless appliance communication with detection and capture algorithm |
Jun. 24, 2008 |
| 7391716 |
Semiconductor integrated circuit and data transmission system |
Jun. 24, 2008 |
| 7391346 |
Switching amplifier system and method |
Jun. 24, 2008 |
| 7391280 |
Circuit and method for pulse width modulation |
Jun. 24, 2008 |
| 7388911 |
In-band-on-channel broadcast system for digital data |
Jun. 17, 2008 |
| 7386045 |
Dynamic differentiated link adaptation for ultra-wideband communication system |
Jun. 10, 2008 |
| 7382829 |
Constitution of a receiver in an ultra-wideband wireless communications system |
Jun. 3, 2008 |
| 7379016 |
Carrier phase detection system for radar sensors |
May. 27, 2008 |
| 7376357 |
System and method of using variable pulses for symbology |
May. 20, 2008 |
| 7376208 |
Reception method for packetized information with automatic repeat request |
May. 20, 2008 |
| 7376182 |
Digital processor with pulse width modulation module having dynamically adjustable phase offset capability, high speed operation and simultaneous update of multiple pulse width modulation duty |
May. 20, 2008 |
| 7372902 |
Pulse with modulation signal generating circuit |
May. 13, 2008 |
| 7369609 |
Duty factor encoded data and clock transmission |
May. 6, 2008 |
| 7352807 |
Apparatus and method for generating pulse based on time delay and wave transform and transmitter of multi-frequency band communication system using the same |
Apr. 1, 2008 |
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