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JP2005065029A |
To provide a semiconductor device which is provided with a power device and its driving circuit and can prevent a malfunction of the driving circuit with high accuracy at the time of switching the power device.This semiconductor device i...
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JP3625296B2 |
A convergence correction apparatus for a picture image display device including a picture tube provided with an anode and a convergence coil, for displaying a picture image, a receiver for receiving a composite video signal, a separator ...
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JP3620003B2 |
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JP3620338B2 |
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JP3618869B2 |
To generate accurately a desired signal in response to an input clock signal. A charge/discharge control circuit 1 inputs a clock signal SK with a same frequency as that of a triangle wave signal and an outputs a signal SK2 controlling c...
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JP3613787B2 |
To reduce inter-cycle jitters in a clock generator, to which an EMI countermeasures are subjected. In a secondary PLL having a loop filter 7 constituted of a first capacity and a first resistance, the decrease in comparison frequencies c...
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JP3611043B2 |
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JP3611423B2 |
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JP3608819B2 |
PURPOSE: To obtain the oscillation output of a large duty rate by intermittently controlling a charging current to a second capacitor by means of a first switch corresponding to the oscillation output of a first relaxation oscillator so ...
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JP3606959B2 |
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JP3607319B2 |
PURPOSE: To obtain the oscillating circuit not affected by a transistor(TR) characteristic and a power supply fluctuation by comparing a voltage generated from a voltage generating circuit with a charging voltage of 1st and 2nd capacitor...
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JP3607094B2 |
An oscillation output generating circuit outputs a voltage V0 as an oscillation output, and a first comparing circuit compares V0 with a constant voltage V1, while a second comparing circuit compares V0 with a constant voltage V2 (
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JP3603457B2 |
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JP3603642B2 |
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JP2004349831A |
To provide an oscillation circuit with a simple configuration and low power consumption wherein a consumed current is small.The oscillation circuit is provided with: a capacitor Co for charging / discharging a current; a charge / dischar...
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JP3593261B2 |
A hysteresis comparator circuit and a waveform generating circuit reduce a power consumption of a DC/DC converter so as to improve a power consumption efficiency when the DC/DC converter is operated with a relatively small load. The hyst...
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JP3583470B2 |
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JP3581260B2 |
A pulse generating device generates an output pulse by controlling the amplitude of a triangular wave at a constant level by use of an AGC circuit and wave-shaping the triangular wave when the triangular wave is generated by triggering a...
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JP3581002B2 |
In a pulse generator, a sawtooth-shaped wave generator circuit generates a sawtooth-shaped wave by charging and discharging a capacitor. The sawtooth-shaped wave is fed to a comparator that performs pulse-width modulation on it in accord...
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JP3577392B2 |
An object of the present invention is to provide a waveform shaping circuit for producing a trapezoidal pulse whose leading edge and trailing edge have the same slope and not inducing and radiating harmonic components under any condition...
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JP2004282525A |
To provide a waveform generating device capable of reducing distortion of an output waveform by extracting resolution belonging to a D/A converter as much as possible and easily changing frequencies of the output waveform without being a...
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JP2004260311A |
To provide a PWM signal generator circuit for generating a PWM signal quick in response.The signal generator circuit comprises a reference pulse signal generator circuit 10 for generating pulse signals at intervals corresponding to an in...
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JP2004253868A |
To provide a triangular wave oscillation circuit for oscillating a triangular wave in an frequency independent of a power supply voltage and in an oscillation amplitude depending on the power supply voltage.The triangular wave oscillatio...
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JP3545031B2 |
PURPOSE: To accurately change an output current stepwise in the current control circuit outputting the output current to control an oscillating frequency of an oscillation circuit. CONSTITUTION: Since a current IA1 supplied to a node 2 i...
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JP2004517520A |
A monitor deflection circuit includes a bipolar power transistor for applying power from a high voltage supply to a horizontal deflection coil. The monitor deflection circuit further includes a base drive circuit for selectively turning ...
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JP3534457B2 |
PURPOSE: To provide the signal generator Which efficiently controls the timings of generation or stop of many signals. CONSTITUTION: The signal generator is provided with a timer 1 which increments the counted value in accordance with a ...
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JP3536426B2 |
PURPOSE: To provide a waveform generator which contains a means capable of externally and simultaneously changing both frequency and phase shift data at a high speed. CONSTITUTION: A waveform generator is provided with an adder 30 to whi...
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JP3528854B2 |
PURPOSE: To actualize the bootstrap circuit which drives a power MOS transistor(TR) with high-potential side constitution wherein the power MOS TR is able to operate with a low-level supply voltage when operating at a high switching freq...
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JP3524109B2 |
PURPOSE: To generate a prescribed triangular wave signal by controlling the current value of charging current source by an outputted error signal and at the same time controlling the duty of an input clock signal. CONSTITUTION: A clock s...
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JP3520095B2 |
PURPOSE: To prevent the adjustment of a raster centering control signal from substantially affecting a raster height adjustment by generating an adjustable raster height control signal for the raster height adjustment. CONSTITUTION: When...
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JP3519354B2 |
To use a sawtooth wave generation circuit for an integrated circuit since the detection characteristic of a phase difference can be decided by the ratio of capacitors and it is independent of an absolute value. A phase shift between an i...
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JP3512819B2 |
PURPOSE: To easily linearize the exponential waveform of a ramp voltage which is generated by the repetitive charging and discharge of a resistor and a capacitor. CONSTITUTION: A vertical deflection ramp voltage VR is generated by utiliz...
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JP3509258B2 |
PURPOSE: To compensate optional transmission line loss by adding a square wave and a triangular wave to an original wave. CONSTITUTION: This circuit is provided with a signal generator 1, a register 2 storing square pulse width data and ...
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JP3510054B2 |
To output a signal equal to a set signal waveform without complicating the whole constitution by executing signal processing based on stored waveform data in response to the input of logic data and generating an output signal having a pr...
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JP3505120B2 |
To compensate fluctuation in load capacity and a temperature and to minimize power dissipation by generating bias current proportional to capacity, a clock frequency and an absolute temperature through the use of an integrated capacitor ...
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JP2004023556A |
To provide an electronic apparatus capable of entirely and efficiently reducing EMI noise when a plurality of kinds of clocks acting like an operation reference exist.The electronic apparatus applies frequency spread processing to a cloc...
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JP3487435B2 |
PURPOSE: To reduce the extension of vertical retracing due to a feedback signal. CONSTITUTION: A vertical deflecting amplifier 53 has an output transistor(TR) Q1 which operates as a conductive switch for coupling a boosted source voltage...
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JP3487144B2 |
To suppress the loss of an element, etc., controlled with pulses generated by the pulse generating device by preventing the pulse signal generating device from malfunctioning. A triangular wave generating circuit 2 generates a triangular...
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JP3486718B2 |
PURPOSE: To provide a waveform forming circuit which can output a signal of an optional waveform (sine wave, triangular wave, trapezoidal wave, etc.) and an optional frequency. CONSTITUTION: A storage means 121 stores the information on ...
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JP3482278B2 |
To provide an oscillation circuit capable of reducing a layout area by realizing a constant current circuit consisting of a low resistor element, reducing power supply voltage dependency and shortening rise time at the starting. The osci...
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JP3475602B2 |
To provide a waveform shaping circuit with which the waveform of a high frequency pulse signal can be shaped into desired waveform without necessity for performing skillful control setting. This circuit is provided with a current control...
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JP3464493B2 |
PURPOSE: To improve a transient response at the time of channel change and to prevent the flow of still image for display on a screen by correcting the amplitude of vertical deflection lamp signal, when a synchronization signal from a br...
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JP2003532325A |
In a waveform generator, a repetitive non-linear waveform is generated by varying the number supplied to a pulse reduction circuit during the repetition period. Consequently, the pulse reduction circuit supplies a number of desired outpu...
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JP3461115B2 |
To reduce the cost of an AGC circuit by increasing a constant current only when necessary and reducing a pull-in time. In addition to a first comparator circuit 3, a second comparator circuit 4 for outputting only when the sample voltage...
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JP2003304143A |
To automatically correct a pulse voltage waveform in a short period of time.A pulse voltage generating device is provided with a PFN3, and when a charging voltage is applied to the PFN, the PFN is charged corresponding to the charging vo...
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JP3458961B2 |
PURPOSE: To prevent the generation of an excessively large current in a switching transistor during a transition period. CONSTITUTION: The circuit 200 contains a diode CR1, a resistor R20, a resistor 40, and a diode CR2 which are connect...
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JP3456586B2 |
PURPOSE: To prevent an output transistor(TR) from being set to an abnormal stable state. CONSTITUTION: A 1st winding W1 of a current transformer T1 included in a drive stage for a horizontal deflection output TR Q2 is coupled with a coll...
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JP3450373B2 |
PURPOSE: To arbitrarily vary a modulation phase by 1/2N (N is an integer more than 1) units of a single picture element in an (m)-fold picture element modulation without using a higher frequency than the frequency of an input clock at th...
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JP3445014B2 |
PURPOSE: To eliminate the need for manual switching by providing 1st and 2nd contact lead-out parts to which each common conductor is integrated and at a prescribed position of which each contact turns to be pressed into contact to the c...
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JP3436005B2 |
To easily realize a waveform generator by which a high quality focus characteristic is obtained by eliminating improper waveform to a CRT where non-parabolic wave is a requirement without distortion due to nonlinearity of a frequency pha...
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