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Patent No. 5823572

Self Defense Weapon With Memo

A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.

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Class 327/563 - With differential amplifier


Subclass of Class 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
Definition: Subject matter wherein the non-linear circuit is combined
No. of patents: 621
Last issue date: 04/03/2012


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NumberTitleIssue Date
8149048Apparatus and method for programmable power management in a programmable analog circuit block
An apparatus and method for programmable power management in a programmable analog circuit block. Specifically, the present invention describes an operational amplifier circuit that includes current sources that are coupled in parallel. Configuration bits are assert...
04/03/2012
8125268High performance input receiver circuit for reduced-swing inputs
An input buffer receiver circuit for electronic devices (e.g., memory chips) to receive and process reduced-swing and high bandwidth inputs to obtain “buffered” output signals therefrom with symmetrical rising and falling delays, and without additional current d...
02/28/2012
8063696Receiving circuit and receiving system
An output circuit (12) converts a pair of current signals supplied to a pair of common nodes (NCa and NCb) into a pair of voltage signals (VOa and VOb). In each of input buffer circuits (11, 11, . . . ), a constant current generation section (101
11/22/2011
7888994Differential to single-ended conversion circuit and comparator using the circuit
An electrical circuit for conversion from differential to single-ended includes a differential amplifier stage and first and second buffer circuits. The differential amplifier stage includes a first and a second input; and a first and a different second charging cir...
02/15/2011
7825723Method and apparatus using an I/O device to eliminate a level shifter in low-voltage CMOS integrated circuits
This discloses an integrated circuit and at least one CMOS analog circuit including a first circuit component generating an output signal received by a second circuit component to generate a feedback signal received by the first component to regulate the output sign...
11/02/2010
RE41792Controllable integrator
Integrated circuitry for selectively introducing capacitance and for controlling the transconductance transfer function of one or more amplifiers includes concatenated differential amplifiers with one or more pairs of switchable capacitive components differentially ...
10/05/2010
7768344Power circuit and power amplifier and base station device using the same
Disclosed are a high-efficiency power amplifier and base station device with respect to high-speed, broadband radio communication method. A broadband power supply circuit includes a linear voltage amplifier to which an input signal is applied, a resistor connected t...
08/03/2010
7733167System and method for common mode bias for high frequency buffers
Methods and systems for reducing parasitic capacitance of a buffer for an electric circuit are disclosed and may include coupling a gate of a first transistor to a first differential input of the buffer via a first capacitor, coupling a gate of a second transistor t...
06/08/2010
7659775Output differential stage
A bipolar differential output circuit includes an input differential bipolar stage for receiving an input signal and generating a differential output current. An output differential pair of bipolar transistors without a bipolar tail current source responds to the in...
02/09/2010
7622986High performance input receiver circuit for reduced-swing inputs
An input buffer receiver circuit for electronic devices (e.g., memory chips) to receive and process reduced-swing and high bandwidth inputs to obtain “buffered” output signals therefrom with symmetrical rising and falling delays, and without additional current d...
11/24/2009
7605645Transconductor, integrator, and filter circuit
A transconductor for receiving a differential voltage signal and outputting a differential current signal, includes two transconductors for receiving the differential voltage signal and outputting a single-end current signal. An inversion input terminal of one of th...
10/20/2009
7579905Reduced jitter amplification methods and apparatuses
Apparatuses, circuits, and methods to amplify signals with reduced jitter are disclosed. Embodiments generally comprise amplifiers coupled with apparatuses that adjust peak frequencies of the amplifiers to reduce jitter. In many system and apparatus embodiments, the...
08/25/2009
7570108Apparatus for regulating voltage
An apparatus for regulating voltage for at least one differential transistor pair having a voltage follower buffer, the voltage follower section having a first voltage-temperature response, includes: (a) a differential amplifier having two input loci and an output l...
08/04/2009
7521992Current-integrating amplifier
A current-integrating amplifier is provided. The current-integrating amplifier comprises a pair of input voltage nodes having a voltage difference there between; A pair of current sources that generate a current that produces a voltage drop over a resistor that corr...
04/21/2009
7514991High accuracy current mode duty cycle and phase placement sampling circuit
A duty cycle and phase placement sampling circuit that can be used for high accuracy sampling and correcting the duty cycle and placement of differential clock signals is provided. The duty cycle and phase placement sampling circuit includes dual differential input ...
04/07/2009
7443210Transmission circuit for use in input/output interface
A transmission circuit includes a first-stage circuit, a second-stage circuit, a negative active feedback circuit and a current buffer. The first-stage circuit includes at least an active MOS device for receiving an input voltage and issuing a first voltage signal. ...
10/28/2008
7433426Adaptive hysteresis receiver for a high speed digital signal
An adaptive hysteresis receiver processes a high speed digital signal. A differential receiver circuit compares the high speed digital signal to a reference voltage to generate an output signal. A register circuit latches the output signal, according to a clock sign...
10/07/2008
7432762Circuit having enhanced input signal range
A circuit having an enhanced input signal range includes a differential amplifier operative to receive at least first and second signals and to generate a difference signal at an output thereof which is a function of the difference between the first and second signa...
10/07/2008
7414441Output buffer circuit
An output buffer circuit includes an input stage of which one end receives an input voltage and the other end receives an output voltage; a class AB output stage that increases a current flowing in the output stage when the difference between the input and output vo...
08/19/2008
7414462Differential receiver circuit
A differential receiver circuit receives a differential input signal including first and second input signals (DP, DM) and generates a single-ended output signal. The receiver circuit includes first and second comparators that receive the differential input signal a...
08/19/2008
7408387Output buffer circuit with control circuit for changing resistance of output resistor pair
Disclosed is an output buffer circuit including a first differential transistor pair for differentially receiving a data signal from a differential input pair; and a second differential transistor pair for differentially receiving an emphasis data signal from anothe...
08/05/2008
7408994AC coupling system for wide band digital data with dynamic AC load
An interface system couples a fixed impedance device to a receiver for transmitting data signals at different data rates at different times. The interface system includes elements that are connected to provide different time constants of responsiveness to data signa...
08/05/2008
7405608Modulator apparatus operating at low supply voltage, and corresponding method of modulation
A modulator apparatus operating at a low supply voltage, configured for receiving an input-voltage signal in base band and supplying an output-voltage signal at a given modulation frequency under control of a signal generated by a local oscillator and comprising a t...
07/29/2008
7403045Comparator circuit with reduced switching noise
A comparator circuit includes a differential amplifier circuit, a latch circuit, and a control signal generating circuit. The latch circuit includes a pair of cross-coupled inverting amplifiers that pull the output signals of the differential amplifier to the high a...
07/22/2008
7403063Apparatus and method for tuning center frequency of a filter
A tuning method and a tuning apparatus for tuning a filter are disclosed. The tuning method includes: configuring the filter as a VCO; utilizing the VCO to generate an oscillation signal according to a driving signal; comparing a frequency of the oscillation signal ...
07/22/2008
7397293Clock distribution circuit
A clock distribution circuit for suitably generating, transmitting, and receiving clock signals used in circuits that are configured with the same circuit topology is provided. The clock distribution circuit has a transmission buffer circuit that transmits a clock s...
07/08/2008
7375559Differential comparator with a replica input stage to set the accurate bias current for improved common mode rejection
Methods and apparatus for properly biasing differential comparators are provided. Using a feedback relationship, a bias for a main stage that receives a first differential input of the comparator is produced. Separately, a feedback relationship produces a bias for a...
05/20/2008
7373575Method and apparatus for generating expect data from a captured bit pattern, and memory device using same
Expect data signals are generated for a series of applied data signals having a known sequence to determine if groups of the data signals were properly captured. A first group of the applied data signals is captured, and a group of expect data signals are generated ...
05/13/2008
7369096Impedance matched passive radio frequency transmit/receive switch
A Radio Frequency (RF) structure services an antenna having a characteristic impedance and includes a differential Power Amplifier (PA), a differential Low Noise Amplifier (LNA), and a balun transformer. The differential PA has a differential PA output with a PA dif...
05/06/2008
7368950High speed transceiver with low power consumption
High-speed and low-power consumption CMOS receivers using adaptively-regulated power supply and pseudo differential digital logic to: 1) reduce the power consumption of the transceiver; and, 2) increase the power supply rejection (PSR) during processing the data.
05/06/2008
7368989High bandwidth apparatus and method for generating differential signals
An apparatus and method for generating differential signals. The apparatus includes a first operational amplifier receiving a first signal, a second operational amplifier receiving a second signal, and a first transistor. The first transistor includes a first gate, ...
05/06/2008
7365585Apparatus and method for charge pump slew rate control
An apparatus and method for improving memory cell reliability is disclosed. The slew rate is reduced in an applied voltage signal used to program a memory cell when Fowler-Nordheim (FN) tunneling injection is detected. The applied programming signal is provided by a...
04/29/2008
7365606Receiving amplifier, in particular for television receivers, and use of the receiving amplifier
A receiving amplifier includes a semiconductor body with a first node, a second node and an amplifier circuit. The amplifier includes at least one field-effect transistor, a first input, and a second input. A capacitive element is arranged between the inputs of the ...
04/29/2008
7362530Amplifier apparatus for use with a sensor
An amplifier apparatus for use with a sensor includes: (a) a first and a second amplifying circuit segment coupled with the sensor and cooperating to effect substantially balanced handling of signals received from the sensor; the first amplifying circuit segment inc...
04/22/2008
7358796Input circuit for receiving a variable voltage input signal and method
An input voltage circuit comprises an input transistor having a control electrode for receiving a variable input voltage, a voltage detection transistor having a current electrode coupled to a current electrode of the input transistor forming a first node, and a cur...
04/15/2008
7358777Current feedback amplifiers
Current feedback amplifiers circuits that generate common mode (CM) and/or differential mode (DM) currents are provided herein. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objec...
04/15/2008
7355479Neutralization of feedback capacitance in amplifiers
A transistor amplifier circuit has a current to current feedback transformer for neutralization of feedback capacitance and setting the input impedance of the amplifier. IM3 cancellation is implemented by out-of-band terminations at the input, which does not depend ...
04/08/2008
7348848Buffer amplifier for source driver
A buffer amplifier for source driver is disclosed. The buffer amplifier has an N-channel differential amplifier and a P-channel differential amplifier as its input stages so as to achieve rail-to-rail input, and a class AB amplifier to push-pull the output stage so ...
03/25/2008
7348802Differential receiver
A differential receiver includes a feedback circuit connected between an output node and one common node of the differential receiver to reduce the bandwidth and reject noise for a specific interval of time. In operation, a differential receiver bias current is cont...
03/25/2008
7339421Differential circuit and receiver with same
A differential circuit including a differential amplifier circuit having a differential element provided in a signal input circuit, a constant current source connected to the differential element, and loads respectively connected to the differential element, and a s...
03/04/2008
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