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Class Information
Number: 375/216
Name: Pulse or digital communications > Apparatus convertible to analog
Description: Subject matter wherein the transmission system, transmitter, or receiver may be altered to alternately send either digital or analog information.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7573956 |
Time encoding and decoding of a signal |
Aug. 11, 2009 |
| 7433683 |
System for fast macrodiversity switching in mobile wireless networks |
Oct. 7, 2008 |
| 7430235 |
Apparatus for providing a multi-mode interface between a baseband receiver and radio frequency circuitry |
Sep. 30, 2008 |
| 7394857 |
Flexible versatile low-cost wireline transmit driver |
Jul. 1, 2008 |
| 7395042 |
Enhancing signals in a two-way radio system |
Jul. 1, 2008 |
| 7343135 |
Method and apparatus for down conversion of radio frequency (RF) signals |
Mar. 11, 2008 |
| 7313175 |
Method for avoiding interference radiation of AM transmitters used in digital transmission |
Dec. 25, 2007 |
| 7308032 |
Oversampling D/A converter and method for shaping nonlinear intersymbol interference in an oversampling D/A converter |
Dec. 11, 2007 |
| 7305037 |
Calibration system for a communications system |
Dec. 4, 2007 |
| 7286614 |
Pilotless, wireless, telecommunications apparatus, systems and methods |
Oct. 23, 2007 |
| 7280593 |
Method and system for sample and reconstruction synchronization for digital transmission of analog modem signal |
Oct. 9, 2007 |
| 7265702 |
Method for converting an analog signal to multiple different phase outputs utilizing an analog-to-digital converter |
Sep. 4, 2007 |
| 7245655 |
Dual antenna receiver |
Jul. 17, 2007 |
| 7243037 |
Signal processing device, use of the signal processing device and method for signal processing |
Jul. 10, 2007 |
| 7194022 |
Method and system having capacity-dependent baseband gain and coverage-capacity swapping in a multi-carrier base station transmitters |
Mar. 20, 2007 |
| 7180950 |
Low-noise feedback cancellation filter for enhanced common-mode rejection and noise immunity |
Feb. 20, 2007 |
| 7151970 |
Multiple audio DACs with PC compatibility |
Dec. 19, 2006 |
| 7130337 |
Method and system for sample and recreation synchronization for digital transmission of analog modem signal |
Oct. 31, 2006 |
| 7075980 |
Digital connection detection technique |
Jul. 11, 2006 |
| 6980789 |
Divider module for use in an oscillation synthesizer |
Dec. 27, 2005 |
| 6973121 |
Repeater system and method of receiving a modulated input signal and transmitting a modulated output signal |
Dec. 6, 2005 |
| 6961547 |
Wireless transmitter incorporating a synchronous oscillator in a translation loop |
Nov. 1, 2005 |
| 6954490 |
Fully integrated ethernet transmitter architecture with interpolating filtering |
Oct. 11, 2005 |
| 6944212 |
Method and apparatus for the spectrally efficient encoding and decoding of discrete data into and from analog waveforms |
Sep. 13, 2005 |
| 6934324 |
Zero value-detecting circuit |
Aug. 23, 2005 |
| 6862636 |
Multi-mode speaker operating from either digital or analog sources |
Mar. 1, 2005 |
| 6823026 |
Apparatus and method for baseband detection |
Nov. 23, 2004 |
| 6819915 |
Applications of a differential latch |
Nov. 16, 2004 |
| 6813310 |
Receiver and IC thereof capable of receiving analog broadcast and digital broadcast |
Nov. 2, 2004 |
| 6810266 |
Digitally controlled radio back-end |
Oct. 26, 2004 |
| 6771711 |
Digital GMSK filter |
Aug. 3, 2004 |
| 6747987 |
Transmit modulation circuit and method of operating a transmitter |
Jun. 8, 2004 |
| 6741659 |
Wireless infrared digital audio transmitting system |
May. 25, 2004 |
| 6731677 |
Method and apparatus for carrying digital data as analog video |
May. 4, 2004 |
| 6721352 |
Method and device for detecting the presence of a carrier signal transmitted in the reverse RF path |
Apr. 13, 2004 |
| 6690313 |
Digital-to-analog upconverter |
Feb. 10, 2004 |
| 6674382 |
Line driver structures that enhance driver performance |
Jan. 6, 2004 |
| 6609039 |
Simultaneous multi-user audio re-transmission digital radio module |
Aug. 19, 2003 |
| 6608860 |
Low power dissipation, high linearity transmitter |
Aug. 19, 2003 |
| 6584145 |
Sample rate converter |
Jun. 24, 2003 |
| 6546044 |
Dual-mode radiotelephone apparatus for digital or analog modulation |
Apr. 8, 2003 |
| 6532258 |
Method for estimating signal-to-noise ratio of digital carriers in an AM compatible digital audio broadcasting system |
Mar. 11, 2003 |
| 6510175 |
In-band on-channel digital broadcasting |
Jan. 21, 2003 |
| 6504865 |
Digital connection detection technique |
Jan. 7, 2003 |
| 6480536 |
Method and apparatus for demodulating and equalizing an AM compatible digital audio broadcast signal |
Nov. 12, 2002 |
| 6434395 |
Portable communications and data terminal having multiple modes of operation |
Aug. 13, 2002 |
| 6411647 |
Fully integrated ethernet transmitter architecture with interpolating filtering |
Jun. 25, 2002 |
| 6408020 |
Dual-mode radio communication device having function for selectively using analog or digital mode |
Jun. 18, 2002 |
| 6404408 |
Enhanced radio graphic data system |
Jun. 11, 2002 |
| 6400758 |
Method and apparatus for training sequence identification in an AM compatible digital audio broadcasting system |
Jun. 4, 2002 |
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