U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5971829

Motorized Ice Cream Cone

A Receptacle for supporting, rotating and sculpting a portion of ice cream or similarly malleable food while it is being consumed.

Newsletter  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.

 

Class 327/17 - With reference signal


Subclass of Class 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
Definition: Subject matter wherein a signal of predetermined shape acts
No. of patents: 15
Last issue date: 08/12/2008


NumberTitleIssue Date
7411426Phase detector for RZ
A phase detector is adapted to receive first and second signals and generate third and fourth signals representative of the difference between the phases of the first and second signals. The phase detector assert the third signal in response to the assertion of the ...
08/12/2008
7348767Bidirectional power conversion with multiple control loops
Bidirectional power conversion systems provide the ability to change power attributes to and from a component. Current bidirectional power conversion systems use a unidirectional power converter for each direction. The integration of the two normally independent pow...
03/25/2008
7142025Phase difference detector, particularly for a PLL circuit
A phase difference detector adapted to generating a signal indicative of a phase difference between a first signal and a second signal, comprising: a first bistable element clocked by the first signal and having a first output signal, and a second bistable element c...
11/28/2006
7088796Phase detector customized for clock synthesis unit
A phase detector customized for Clock Synthesis Unit (CSU) is disclosed. The phase detector improves jitter performance by providing minimal activity on VCO control lines and pushing ripple frequency to one octave higher, while maintaining wide linear characteristic...
08/08/2006
7042253Self-calibrating, fast-locking frequency synthesizer
A frequency synthesizer for dual-band high frequency RF application. The frequency synthesizer first uses a frequency-locked loop circuit (“FLL”) to achieve self-calibration and frequency-locking, and then uses a phase-locked loop circuit (“PLL”) to achieve ...
05/09/2006
6922115Attenuator with switchable transistors for controlling attenuation
An attenuator with a simple circuit configuration is and accurate attenuation includes four transistors connected in parallel between a connecting point on a main line and a ground. Since the transistors are individually brought into an “ON” state and an “OFF...
07/26/2005
6246267Method and apparatus for detecting a sinusoidal signal using a counter and queue
A method and apparatus for detecting a sinusoidal signal samples a received signal. An error signal generator receives at its inputs a previous sample of the received signal and a current sample of the received signal and generates an error signal based o...
06/12/2001
6233293Current-controlled carrier tracking filter for improved spurious signal suppression
Spurious energy suppression for a data communication system is achieved without using a large order noise suppression filter, by means of a post-mixer tracking filter that contains a current-controlled MOSFET-implemented resistance for a transconductance-...
05/15/2001
5963076Circuit with hot-electron protection and method
In a circuit (10), a first N-FET (N1) and a second N-FET (N2) are coupled serially between a node (15) and ground (93). The circuit (10) accommodates a first excursion (85) of a first signal (IN) at the gates of the first N-FET (N1) which is higher than t...
10/05/1999
5742200Environmentally rugged optical sensor with improved noise cancellation
A noise cancellation system which balances the photocurrents derived by a measurement signal and a reference signal of a sensor. The invention has application in any measurement device which detects a small signal in combination with high noise content an...
04/21/1998
5654652High-speed ratio CMOS logic structure with static and dynamic pullups and/or pulldowns using feedback
A high speed ratio CMOS logic structure includes a static PMOS pullup transistor connected to an output node, and a plurality of NMOS pulldown transistors, connected in parallel, to the output node and which collectively define a pulldown circuit. The pul...
08/05/1997
4769611Frequency sensing circuits and methods
Circuitry for sensing frequency over time of a signal that has zero crossings. A first circuit commences generation of a periodic waveform in response to at least some of the zero crossings. A bistable circuit connected to the waveform commencing circuit ...
09/06/1988
4748348Multi-level pattern detector for a single signal
A method and apparatus are disclosed which provide for the generation of a trigger signal responsive to the detection of a plurality of selected sequential events in a single monitored signal. A plurality of trigger detect devices operate independently to...
05/31/1988
4613059Pressure pulse masking circuit for a pressure monitor in a dispensing system
A pressure monitoring system monitors the pressure of hot melt adhesive in a dispenser in an adhesive dispensing system. The dispenser includes a valve and the dispensing system further includes a controller for opening and closing the valve for dispensin...
09/23/1986
4267515Distortion factor meter circuit
This invention relates to a distortion factor meter circuit adapted to measure a harmonic distortion factor of a signal, particularly. A first transmission line is provided which is adapted to shape a first signal having a harmonic component to produce a ...
05/12/1981
 
Sign InRegister
Username  
Password   
forgot password?