Bizarre Patents
A portable partition for use in an automobile having a seat with a seat bench and a seat backrest.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7259643 | Tunable wideband bandpass filter, tunable multi-band bandpass filter using the same, and methods therefore A tunable wideband bandpass filter that can digitally vary the center frequency and bandwidth of a signal to be filtered, and includes a plurality of switched-capacitor banks for varying capacitance and converting the center frequency and bandwidth into a digital si... | 08/21/2007 |
| 7166816 | Inductively-coupled torodial plasma source Apparatus for dissociating gases includes a plasma chamber comprising a gas. A first transformer having a first magnetic core surrounds a first portion of the plasma chamber and has a first primary winding. A second transformer having a second magnetic core surround... | 01/23/2007 |
| 7161112 | Toroidal low-field reactive gas source An apparatus for dissociating gases includes a plasma chamber that may be formed from a metallic material and a transformer having a magnetic core surrounding a portion of the plasma chamber and having a primary winding. The apparatus also includes one or more switc... | 01/09/2007 |
| 7142202 | Driving circuit and display device In a circuit driving a capacitive load Cp, current passed through a transistor Q3, a diode D1 and a recovering coil L is passed through lines L1, L2, and the inductance components of the lines L1 and L2, and the drain-source... | 11/28/2006 |
| 7142833 | Matching unit A matching unit includes a switching means for switching an inductance of a first inductor. This switching means sets an inductance such that a first inductor shows an inductance property to both of the VHF low-band and high-band, and shows a capacitance property to... | 11/28/2006 |
| 7136114 | Television receiver with dynamically adjustable filtering A television receiver includes a tuner stage, a selective filter stage connected to the tuner stage, and a intermediate-frequency stage connected to the selective filter stage. A field-strength-detection stage is also provided, which generates a field strength signa... | 11/14/2006 |
| 7102465 | Frequency discrete LC filter bank An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The i... | 09/05/2006 |
| 7088202 | Methods and apparatus for an improved discrete LC filter A discrete inductive-capacitive (LC) filter selects between at least two inductor banks to tune the LC filter. The filter receives an input signal that includes one or more bands of frequencies. A control signal selects a band of frequencies for processing. A first ... | 08/08/2006 |
| 7071799 | High performance switch for switched inductor tuned RF circuit A Radio Frequency (RF) circuit includes an active portion and a tuned portion. The active portion receives an RF signal and that operates upon the RF signal. The tuned portion couples to the active portion and includes a first inductor, a second inductor, and an NMO... | 07/04/2006 |
| 7019790 | Integrated tuner circuit and television tuner using an integrated tuner circuit An integrated tuner circuit includes a first terminal to which a UHF TV signal is input via a UHF amplifier. The amplifier is switched to an operating state when a UHF TV signal is received. A switching-voltage generation circuit includes a first switching circuit f... | 03/28/2006 |
| 6940365 | Methods and apparatus for an improved discrete LC filter A discrete inductive-capacitive (LC) filter selects between at least two inductor banks to tune the LC filter. The filter receives an input signal that includes one or more bands of frequencies. A control signal selects a band of frequencies for processing. A first ... | 09/06/2005 |
| 6924455 | Integrated plasma chamber and inductively-coupled toroidal plasma source A material processing apparatus having an integrated toroidal plasma source is described. The material processing apparatus includes a plasma chamber that comprises a portion of an outer surface of a process chamber. A transformer having a magnetic core surrounds a ... | 08/02/2005 |
| 6822697 | Television tuner that generates no interfering signal Needless signal that causes interference is prevented from entering to eliminate the generation of interfering signal. A television tuner is provided with a band switching circuit to which television signals of a plurality of channels arranged in a predetermined fre... | 11/23/2004 |
| 6486757 | Double-tuned circuit of tuner featuring restrained degradation of selectivity A double-tuned circuit of a tuner that can be switched for tuning to a plurality of frequency bands by turning a switching diode ON or OFF restrains degradation of a selectivity caused by an undesirable additional tuning circuit or parasitic tuning circui... | 11/26/2002 |
| 6255913 | Variable frequency oscillator circuit A variable frequency oscillator (VFO) circuit having an increased frequency tuning range to selectively obtain operating frequencies above and below a set frequency. The circuit includes a tank inductor connected in parallel with a tank capacitor for prim... | 07/03/2001 |
| 6125269 | TV FM receiver for multimedia applications A receiver for receiving both first-type reception signals, for example TV signals, and second-type reception signals, for example, FM-radio signals. The receiver may be used in multimedia applications. In the receiver, a reception signal is fed via an in... | 09/26/2000 |
| 5821838 | Double tuning circuit of TV tuner The double tuning circuit of a TV tuner provided by the present invention comprises a primary tuning circuit and a secondary tuning circuit coupled with each other wherein at least one of the primary and secondary tuning circuits comprises two series circ... | 10/13/1998 |
| 5463362 | Tuner circuit having a switching diode to change receiving bands A tuner circuit is basically composed of: a series of a low-band coil and a high-band coil disposed on the signal side; a series of a low-band coil and a high-band coil disposed on the earth side; and a switching diode disposed between a junction of the l... | 10/31/1995 |
| 5214399 | Circuit configuration for range changing in tuners A circuit configuration, especially in a television set, for range switching in tuners having at least two ranges includes at least two preselector stages each being assigned a respective tuner range. Each of the preselector stages is connected between a ... | 05/25/1993 |
| 5204645 | Circuit configuration for range switching in tuners A circuit configuration for range switching in tuners having at least two ranges includes at least two preselector stages each being assigned to a respective tuner range. Each of the preselector stages is connected between a supply potential terminal and ... | 04/20/1993 |
| 5020145 | AM/FM band selector An AM/FM band selector is provided for selecting AM and FM bands by a single band switch. By using only a single band switch, power consuming parts are eliminated so that power consumption of the selector is reduced. Also, impulse noise which occurs when ... | 05/28/1991 |
| 4851796 | TV-RF input circuit TV-RF input circuit provided with an RF coupling device via which an aerial input is coupled to first, second and third parallel tunable RF resonant circuits (11, 21, 31) for a parallel selection of a desired frequency in first, second and third TV freque... | 07/25/1989 |
| 4823099 | Television tuner for three different frequency ranges A television tuner for three different frequency ranges comprises a common antenna connection for three input filter circuits (1, 2, 3). In order to obtain a simple circuit design which involves negligible mutual capacitive loads from the input filter cir... | 04/18/1989 |
| 4756024 | RF-input circuit arrangement for a television tuner A circuit arrangement of input stages for a television tuner for the UHF, VHF and hyperband frequency bands in a continuous frequency range having primary bandpass filters for the UHF and VHF bands arranged in parallel, and connected to a signal input aer... | 07/05/1988 |
| 4736457 | Circuit arrangement for a tuner for changing over two frequency bands The invention relates to a circuit arrangement for a tuner, particularly a television tuner, for a change over switching between two frequency bands with the aid of a switching diode, said frequency bands, particularly the VHF band and the hyperband, bein... | 04/05/1988 |
| 4633206 | Expanded dial arrangement for 56 channel UHF tuner The channel selector shaft of a 70 channel mechanically detented UHF tuner is provided with mechanical stops which prevent the shaft from moving above UHF channel No. 69 so that the upper twenty-four UHF channels are unused. Also, a dial driving arrangeme... | 12/30/1986 |
| 4607391 | VHF/UHF band switching tuner including a second diode in band switch loop A band switching circuit for a tuner for receiving VHF and UHF channels comprises a tuning circuit including a switching diode having an anode and a cathode for band switching, a plurality of resistors connected to the anode and cathode of the switching d... | 08/19/1986 |
| 4596044 | UHF-VHF combination tuner A combination UHF-VHF tuner has a switching diode placed in series with a VHF high-range peaking coil so that the coil forms a parallel resonance peaking circuit when high-range VHF signals are received and the coil acts as a series impedance matching ele... | 06/17/1986 |
| 4577171 | Input circuit comprising at least two input paths An input circuit comprises at least two input paths which are connected to a common input terminal and which are alternately connectable to a common output. The input paths form selection members for the UHF and VHF frequency range whose signals are ampli... | 03/18/1986 |
| 4573211 | Two-circuit resonant bandpass filter for television tuners The invention relates to a two-circuit resonant bandpass filter for television tuners for switching a first frequency band to a second frequency band. The bandpass filter has a common primary circuit to which two secondary circuits are coupled, a first of... | 02/25/1986 |
| 4291290 | UHF-VHF tuner having damping means to reduce interference in UHF band An electronic tuner capable of selectively receiving the UHF band and high and low channels in the VHF band is described which has a suitable resistance provided across power supply terminals in order to improve the separation between the VHF mode and the... | 09/22/1981 |
| 4270394 | Toning shaft for a rotary switch A rotary type television tuner includes a chassis and a channel changing shaft extending through the chassis and having an operating knob mounted on the front end thereof for rotating the shaft. The channel changing shaft is made of a synthetic resin rein... | 06/02/1981 |
| 4165499 | Channel-selecting, presettable, rotary type tuning device A channel-selecting, presettable, rotary type tuning device in which there is provided a tuning-position-determining unit having two or more tuning-position-determining elements, whose positions may be adjustable; a slide member operably coupled to a vari... | 08/21/1979 |
| 4158826 | Operator controllable detent mechanism for television tuners An operator-controllable detent mechanism is provided for a combination VHF-UHF television tuner. Separate torsionally-loaded detent springs are provided for two detent wheels which are mounted on the common station selector shaft of the tuner. A manually... | 06/19/1979 |
| 4128820 | Combination VHF and UHF tuner arrangement In a VHF tuner a stator bar switching arrangement is provided which is particularly suitable for use in combination VHF-UHF tuners. A movable switching member positioned on the main stator bar of a turret type VHF tuner is moved between fixed contacts on ... | 12/05/1978 |
| 4118679 | VHF, UHF and superband tuner with automatic switching A combination VHF, UHF and superband tuner, the superband and UHF tuners cooperating with the Channel 1 section of the VHF tuner, is provided with a connection network including voltage sensitive switching devices, such as voltage sensitive diodes, so tha... | 10/03/1978 |
| 4071982 | Method and implement for cleaning spring-contacts of a tuner A method for cleaning the fixed spring-contacts of a cylindrical, drum-type television tuner or other electrical switch having contact-carrying strips arranged around the circumference of a rotatable drum, in which a cleaning implement is attached to the ... | 02/07/1978 |
| 4052675 | UHF tuner arrangement A continuously variable UHF tuner arrangement is provided wherein a single channel selector shaft is provided with a detent position for each of the 70 UHF television stations and a highly accurate detent mechanism is employed to return the channel select... | 10/04/1977 |
| 3978438 | Tuning control apparatus A frequency band selection switch and variable resistor assembly for one channel of a television tuner in which tuning is performed by varying a tuning voltage. A tuning shaft is connected to the slider of the variable resistor through a harmonic drive re... | 08/31/1976 |
| 3959746 | Automatic antenna coupler tuning control circuit A control circuit is disclosed to automatically tune an antenna coupler to provide an output signal having a selected one of different operating frequencies. The antenna coupler includes a frequency band selecting switch and a plurality of tuning elements... | 05/25/1976 |
