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Class Information
Number: 370/205
Name: Multiplex communications > Generalized orthogonal or special mathematical techniques > Plural diverse modulation techniques > Pulse width and pulse position modulation
Description: Subject matter wherein information is contained in the time duration of a pulse (pulse width) and in the time of occurrence (pulse position) of one pulse after a reference pulse.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7423958 |
Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels |
Sep. 9, 2008 |
| 7408872 |
Modulation of signals for transmission in packets via an air interface |
Aug. 5, 2008 |
| 7391711 |
Method and system for adaptive modulation |
Jun. 24, 2008 |
| 7391712 |
Method and system for forward-looking tone allocation |
Jun. 24, 2008 |
| 7388911 |
In-band-on-channel broadcast system for digital data |
Jun. 17, 2008 |
| 7376075 |
Circular constellations with coherent gain/differential phase and pilots |
May. 20, 2008 |
| 7317758 |
PCM-to-PWM converter |
Jan. 8, 2008 |
| 7283011 |
Method for performing dual phase pulse modulation |
Oct. 16, 2007 |
| 7233618 |
Circuit configuration and method for transmitting digital signals |
Jun. 19, 2007 |
| 7200187 |
Modulator for digital amplifier |
Apr. 3, 2007 |
| 7187911 |
Calibrated PLL for wide band communication semiconductor integrated polar loop transmitter |
Mar. 6, 2007 |
| 7180850 |
Frequency offset differential pulse position modulation |
Feb. 20, 2007 |
| 7099266 |
Orthogonal frequency division multiplexed signal transmitting apparatus, orthogonal frequency division multiplexed signal receiving apparatus, and orthogonal frequency division multiplexed sig |
Aug. 29, 2006 |
| 7079480 |
Enhancing security and efficiency of wireless communications through structural embedding |
Jul. 18, 2006 |
| 7079577 |
Wide window decoder circuit for dual phase pulse modulation |
Jul. 18, 2006 |
| 7054658 |
Pulse shaping according to modulation scheme |
May. 30, 2006 |
| 7046618 |
Bridged ultra-wideband communication method and apparatus |
May. 16, 2006 |
| 7003032 |
Generation of multiple independent high resolution pulse width modulations |
Feb. 21, 2006 |
| 6996371 |
Device for the analysis of electromagnetic signals |
Feb. 7, 2006 |
| 6970496 |
RF modem and communications transceiver utilizing saw device and pulse shaping |
Nov. 29, 2005 |
| 6965611 |
Subscriber unit for supporting communication rate modifications |
Nov. 15, 2005 |
| 6853836 |
Polar loop transmission circuit |
Feb. 8, 2005 |
| 6741609 |
Method implemented by a subscriber unit for selectively suppressing communications |
May. 25, 2004 |
| 6711122 |
Frequency offset differential pulse position modulation |
Mar. 23, 2004 |
| 6711121 |
Orthogonal code division multiplexing for twisted pair channels |
Mar. 23, 2004 |
| 6657949 |
Efficient request access for OFDM systems |
Dec. 2, 2003 |
| 6631165 |
Code modulation using narrow spectral notching |
Oct. 7, 2003 |
| 6532260 |
Pulse transmission device for use in long-distance communication |
Mar. 11, 2003 |
| 6526094 |
PWM Circuit |
Feb. 25, 2003 |
| 6445747 |
Method and apparatus to reduce peak to average power ratio in multi-carrier modulation |
Sep. 3, 2002 |
| 6396431 |
Precision microwave/millimeter wave modulated signal source |
May. 28, 2002 |
| 6181741 |
Remote control receiver |
Jan. 30, 2001 |
| 6178158 |
Method and apparatus for transmission and reception |
Jan. 23, 2001 |
| 6147981 |
Method and apparatus for predictive parameter control with loop delay |
Nov. 14, 2000 |
| 5870380 |
Method and apparatus for reception of signals from several transmitters wherein each transmitter is characterized by their output pulse train |
Feb. 9, 1999 |
| 5802187 |
Two-channel programmable sound generator with volume control |
Sep. 1, 1998 |
| 5764696 |
Chiral and dual polarization techniques for an ultra-wide band communication system |
Jun. 9, 1998 |
| 5751770 |
Data transmission system |
May. 12, 1998 |
| 5473633 |
Process and a system for digital modulation |
Dec. 5, 1995 |
| 5257288 |
Data transmission system |
Oct. 26, 1993 |
| 4729066 |
Method and apparatus for the generation and transmission of signals for echo location and other signaling purposes, particularly in geophysical exploration |
Mar. 1, 1988 |
| 4586186 |
Maintenance response signalling arrangement for a digital transmission system |
Apr. 29, 1986 |
| 4229830 |
Apparatus and method for providing a modulation format for multiple wideband signal transmission |
Oct. 21, 1980 |
| 4085287 |
Data transmitting apparatus |
Apr. 18, 1978 |
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