| |
 |
|
Class Information
Number: 455/195.1
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Signal selection based on frequency (e.g., tuning) > Variable voltage or current tuning
Description: Subject matter wherein the means to select the carrier wave frequency is responsive to voltage or current.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7561861 |
Tuning circuit |
Jul. 14, 2009 |
| 7558552 |
Integrated circuit and method of generating a bias current for a plurality of data transceivers |
Jul. 7, 2009 |
| 7501919 |
Boosted-bias tunable filter with dynamic calibration |
Mar. 10, 2009 |
| 7427907 |
Boosted-bias tunable filter with dynamic calibration |
Sep. 23, 2008 |
| 7349034 |
Television tuner using integrated circuit |
Mar. 25, 2008 |
| 7295822 |
Radio wave receiver, radio-controlled timepiece and tuning capacitance setting method |
Nov. 13, 2007 |
| 7266388 |
Transmitting circuit and communication terminal unit therewith |
Sep. 4, 2007 |
| 7171178 |
Tuning circuit having amplitude-varying function |
Jan. 30, 2007 |
| 7146199 |
Cordless digital audio headphone |
Dec. 5, 2006 |
| 7142818 |
Systems and methods for reducing radio receiver interference from an on-board avionics transmitter |
Nov. 28, 2006 |
| 7031683 |
Apparatus and methods for calibrating signal-processing circuitry |
Apr. 18, 2006 |
| 7019790 |
Integrated tuner circuit and television tuner using an integrated tuner circuit |
Mar. 28, 2006 |
| 6920316 |
High performance integrated circuit regulator with substrate transient suppression |
Jul. 19, 2005 |
| 6714771 |
Broadcast radio signal seek circuit |
Mar. 30, 2004 |
| 6624743 |
Automatic adjusting responder with no self-contained power supply |
Sep. 23, 2003 |
| 6615031 |
Heterodyne stage for high-frequency receivers |
Sep. 2, 2003 |
| 6553216 |
RF tunable filter arrangement with tunable image trap |
Apr. 22, 2003 |
| 6424824 |
Apparatus for setting the tuning voltage of tunable resonant circuits |
Jul. 23, 2002 |
| 6400935 |
Pilot tone detector |
Jun. 4, 2002 |
| 6188970 |
Method of calibrating a multistage selective amplifier |
Feb. 13, 2001 |
| 5953642 |
System for contactless power and data transmission |
Sep. 14, 1999 |
| 5845200 |
Method and an apparatus for automatically tuning a receiver |
Dec. 1, 1998 |
| 5808531 |
Voltage-controlled variable tuning circuit |
Sep. 15, 1998 |
| 5745844 |
Receiver control in a communication device by antenna de-tuning in strong signal conditions, and method therefor |
Apr. 28, 1998 |
| 5742898 |
Tuning system with DC-DC converter |
Apr. 21, 1998 |
| 5483688 |
Adaptive automatic antenna tuning method and apparatus |
Jan. 9, 1996 |
| 5469117 |
Voltage-controlled frequency oscillator |
Nov. 21, 1995 |
| 5408688 |
Method and a device pertaining to an electro-mechanically controlled resonance module |
Apr. 18, 1995 |
| 5189593 |
Integrated distributed resistive-capacitive network |
Feb. 23, 1993 |
| 5136719 |
Automatic antenna tubing method and apparatus |
Aug. 4, 1992 |
| 5040239 |
Tuning circuit and receiver |
Aug. 13, 1991 |
| 5020146 |
Lossy constant bandwidth tuned circuit |
May. 28, 1991 |
| 4996599 |
Television tuner oscillator with three point tracking |
Feb. 26, 1991 |
| 4984296 |
Tuned radio apparatus |
Jan. 8, 1991 |
| 4921465 |
Varactor tuned UHF RF signal input circuit |
May. 1, 1990 |
| 4862516 |
System for automatically tuning the antenna of a miniature portable communications device |
Aug. 29, 1989 |
| 4849721 |
Bandpass filter for a CATV converter |
Jul. 18, 1989 |
| 4794650 |
Electronic tuning receiver |
Dec. 27, 1988 |
| 4792989 |
Tuner circuits and voltage generators therefor |
Dec. 20, 1988 |
| 4789866 |
Automobile antenna system |
Dec. 6, 1988 |
| 4743866 |
Wide range oscillator |
May. 10, 1988 |
| 4742564 |
Tuning alignment data memory device for tuning circuits tunable to selectable frequencies |
May. 3, 1988 |
| 4713631 |
Varactor tuning circuit having plural selectable bias voltages |
Dec. 15, 1987 |
| 4710973 |
Varactor diode tuner with band switched coils and lines |
Dec. 1, 1987 |
| 4703286 |
Dual gate tunable oscillator |
Oct. 27, 1987 |
| 4675634 |
Variable-capacitance tuning circuit for high-frequency signals |
Jun. 23, 1987 |
| 4658437 |
Tuning voltage tracking arrangement |
Apr. 14, 1987 |
| 4646360 |
Constant bandwidth RF filter with improved low frequency attenuation |
Feb. 24, 1987 |
| 4641190 |
Muting system |
Feb. 3, 1987 |
| 4630118 |
Automatic frequency control circuit for a television signal receiving apparatus |
Dec. 16, 1986 |
|
|
|
