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Class Information
Number: 455/130
Name: Telecommunications > Receiver or analog modulated signal frequency converter
Description: Apparatus comprising (a) means for receiving a carrier wave, upon which an information signal has been modulated, and deriving the original information signal from the modulated carrier wave. Further means may be provided for converting the derived signal into a physical manifestation readily perceived by at least one of the human senses (e.g., sound) or (b) devices whereby an incoming carrier wave signal, which has been modulated by an analog signal, is changed from one carrier frequency to another carrier frequency.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6912378 |
Multiple band scanning receiver system having data and speech searching capability |
Jun. 28, 2005 |
| 6907083 |
Frequency analysis |
Jun. 14, 2005 |
| 6876939 |
Method and device of carrier wave frequency calibration for remote controller |
Apr. 5, 2005 |
| 6859506 |
Ultra wideband communication system, method, and device with low noise reception |
Feb. 22, 2005 |
| 6850733 |
Method for conveying application data with carrierless ultra wideband wireless signals |
Feb. 1, 2005 |
| 6819914 |
Differential mixer injection with optional step gain control |
Nov. 16, 2004 |
| 6810266 |
Digitally controlled radio back-end |
Oct. 26, 2004 |
| 6807640 |
Programmable interface controller suitable for spanning clock domains |
Oct. 19, 2004 |
| 6801585 |
Multi-phase mixer |
Oct. 5, 2004 |
| 6781519 |
Method and vehicle system for remote-controlling vehicle audio system |
Aug. 24, 2004 |
| 6775520 |
Synthetic-aperture communications receivers |
Aug. 10, 2004 |
| 6775257 |
Packet-transmitting system |
Aug. 10, 2004 |
| 6745020 |
Direct downconversion receiver |
Jun. 1, 2004 |
| 6658242 |
TDMA wireless telephone system with independently tracked demodulation parameters |
Dec. 2, 2003 |
| 6654597 |
Shirt-pocket scanner |
Nov. 25, 2003 |
| 6640093 |
Broadcast receiver |
Oct. 28, 2003 |
| 6625436 |
Radio receivers |
Sep. 23, 2003 |
| 6590943 |
Radio receiver |
Jul. 8, 2003 |
| 6549588 |
Communications system and corresponding receiver unit |
Apr. 15, 2003 |
| 6535724 |
Receiver portion of a telephone |
Mar. 18, 2003 |
| 6512801 |
Receiver capable of selecting optimal voltage controlled oscillator |
Jan. 28, 2003 |
| 6493401 |
Receiving circuit and method for a controlled area network system |
Dec. 10, 2002 |
| 6487391 |
Method and apparatus for selectively receiving a satellite broadcast signal or a cable television signal |
Nov. 26, 2002 |
| 6477182 |
Data transmission method and apparatus |
Nov. 5, 2002 |
| 6404758 |
System and method for achieving slot synchronization in a wideband CDMA system in the presence of large initial frequency errors |
Jun. 11, 2002 |
| 6400419 |
Television tuner system |
Jun. 4, 2002 |
| 6370365 |
Selective call radio having an integrated frequency conversion circuit |
Apr. 9, 2002 |
| 6307660 |
Optical receiver particularly useful for a multi-wavelength receiver array |
Oct. 23, 2001 |
| 6298225 |
Radio telephones and method of operation |
Oct. 2, 2001 |
| 6289206 |
Computer peripheral radio receiver |
Sep. 11, 2001 |
| 6256358 |
Digital signal processing architecture for multi-band radio receiver |
Jul. 3, 2001 |
| 6232906 |
Quaternary FSK receiver and method of judging signals in quaternary FSK receiver |
May. 15, 2001 |
| 6175725 |
Complete radio navigation receiver, particularly of the GPS type |
Jan. 16, 2001 |
| 6134425 |
Digital module RF section |
Oct. 17, 2000 |
| 6125270 |
Verification system for transmitters and command tone generators |
Sep. 26, 2000 |
| 6072992 |
High-frequency device |
Jun. 6, 2000 |
| 6032029 |
Receiver selecting either a first demodulated signal or a second demodulated signal in accordance with characteristics of a received signal |
Feb. 29, 2000 |
| 5926750 |
Receiver |
Jul. 20, 1999 |
| 5732336 |
Receiver |
Mar. 24, 1998 |
| 5726667 |
Portable communication system |
Mar. 10, 1998 |
| 5212725 |
Telephone being signal responsive for extending and retracting an antenna |
May. 18, 1993 |
| 5101418 |
Digital time-multiplexed quadrature frequency upconverter |
Mar. 31, 1992 |
| 4280223 |
Radar detector |
Jul. 21, 1981 |
| 4112375 |
Tunable selective super heterodyne receiver |
Sep. 5, 1978 |
| 4067000 |
Remote control transmitter with an audible battery life indicator |
Jan. 3, 1978 |
| 4059802 |
Input level display circuit for receivers |
Nov. 22, 1977 |
| 4057829 |
Communications TV monitoring and control system |
Nov. 8, 1977 |
| 4057790 |
Personal aid signalling system |
Nov. 8, 1977 |
| 4044303 |
Microwave radiation detector |
Aug. 23, 1977 |
| 4034299 |
Audio signal quality indicator |
Jul. 5, 1977 |
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