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Matches 651 - 700 out of 4,508

Document Document Title
JP5320975B2
A pulse width modulation circuit includes: a reference signal generator which generates a plurality of mutually differing reference signals; a comparator which compares the reference signals and an input signal with respect to magnitude,...  
JP5323517B2
The present invention provides a noncontact interface technique capable of performing communication operation without stopping an internal operation even when a clock signal cannot be extracted from a carrier wave. In a semiconductor dev...  
JP2013214942A
To provide a PWM duty conversion device that can set a limit value with higher accuracy when limiting the duty of a PWM signal.A duty conversion section 72 compares with a triangular reference wave a serial arrangement of duty command si...  
JP5319986B2
A pulse signal generator includes a period setting unit that receives a period set signal including an information indicative of a pulse period, and that outputs a period control signal controlling the pulse period, a duty ratio setting ...  
JP5315413B2
A signal processor (30) is provided. The signal processor (30) is configured to receive a first analog signal and convert the first analog signal into a digital signal. The digital signal is transmitted across an electrical barrier and c...  
JP2013538468A
A variable modulus sigma delta (SigmaDelta) modulator for a fractional-N frequency synthesizer in accordance with the present invention may include an integer division unit; a pulse-width modulation (PWM) generator, a SigmaDelta noise-sh...  
JP2013211682A
To provide a pulse signal generating circuit capable of generating a highly precise PWM signal.A PWM period adjustment part 400 generates a second count-up signal en2 by adjusting a count-up signal en generated by dividing a clock, on th...  
JP2013187651A
To provide a pulse width modulation signal output device that outputs a pulse width modulation signal having a short period.The pulse width modulation signal output device includes: a clock generator 10 for outputting two clock signals; ...  
JP5291627B2
The PWM signal generator of the present invention generates a first pulse waveform in which a first on-time ”T 1 calculated by a first on-time calculator (401) is used as an on-duration, and a second pulse waveform in which a second on...  
JP2013172293A
To provide a technique for generating a digitally modulated sound signal as an analog signal by pulse width modulation.An analog signal generation apparatus for reproducing a digital signal into an analog compressional signal includes: a...  
JP5269576B2
A signal modulator that can control transmission power if level adjustment of a continuous signal from an oscillator is executed is provided. A pulse generator of one example of a signal modulator includes an oscillator, a control signal...  
JP5266040B2
To generate PWM signals of three levels for bridged transless (BTL) or the like from input PWM signals of two levels completely without using a low-pass filter. PWM signals of two levels are input to obtain a synchronous PWM signal synch...  
JP2013157847A
To provide a triangular wave generation circuit that outputs a triangular signal with reduced temporal variations in the peak value.Sources of P channel transistors 11, 12 are connected to a high potential side power supply VDD, and sour...  
JP2013157873A
To provide a pulse signal generator which makes it possible to calculate and set the duty ratio and/or 8-period of a modulation pulse each time while minimizing increase in a processing load.Using an A/D conversion value of a current det...  
JP2013156326A
To provide a backlight driving device of a liquid crystal display device that enables luminance of a backlight to be stabilized, resulting from being not readily affected by a phase variation of an external vertical synchronization signa...  
JP2013157818A
To execute a mute process instantly at a transition from a power-on state to a power-off state, and prevent the mute process from being executed upon an input supply voltage drop in the power-on state.In a power-on state, a resistance R1...  
JP5262165B2
To provide a compact digital AGC circuit requiring no multiplier for operation, such as gain calculation. The digital AGC circuit comprises: a ΣΔ modulator 61 composed of a D/A conversion means 43 for outputting an amount of charge of ...  
JP2013153288A
To provide a comparator capable of achieving a high-speed voltage comparison while suppressing an increase in an operating current.A differential pair 102 includes a first input transistor Mi1 and a second input transistor Mi2 in which r...  
JP5258827B2  
JP5234032B2  
JP5231406B2  
JP2013132049A
To provide a signal outputting apparatus and method and an image forming apparatus using the same which are capable of improving EMI characteristics.An image forming apparatus includes a function unit to function as the image forming app...  
JP5227295B2  
JP2013128264A
To provide a relaxation oscillator which realizes increase in a frequency of the OSC_OUT signal without increasing current consumption.A relaxation oscillator for generating an oscillator signal includes a ramp voltage generating circuit...  
JP5219722B2  
JP5222267B2  
JP2013126191A
To prevent generation of noise when an input signal is zero, and synchronize two pulse width modulation signals without using an external clock.A first monostable multivibrator charges a capacitor Ca with a first charging current in resp...  
JP5216987B2  
JPWO2011101981A
Frequency voltage conversion circuit 13 comprises switch SW1, a switch part which comprises SW2, electric capacity element C, C10*C13, and switch CSW0*CSW3. Electric capacity element C10*C13 differs in the absolute value of capacity, is ...  
JP2013524594A
A method and circuit composition (10) which generate a multi-phase PWM signal (12) are shown. One counter (30, 54, 74, 94) and two comparison machines (32, 34, 56, 58, 76, 78, 96, 98), A plurality of PWM generation machines (20, 22, 24, ...  
JPWO2011101981A1
周波数電圧変換回路13は、スイッチSW1 ,SW2から構成されるスイッチ部、静電容 量素子C,C10〜C13、およびスイッチ CSW0〜CSW3から構成されている...  
JP2013115672A
To provide a pulse width modulation circuit that can solve the problem in which, at a transition to a power-off state, leakage currents charging storage means bring both inputs of two output elements to a high level and both outputs ther...  
JP2013090002A
To output a PWM waveform indicating a more precise duty ratio than a bit number determining the duty ratio of output pulses.A pulse generation circuit 12 includes: a PWM waveform output section 20 for outputting a PWM waveform in which a...  
JP2013085169A
To provide a load control device that implements improved duty ratio accuracy by preventing an inaccurate duty ratio in a high duty range.A triangular wave generation circuit 5 generates a triangular wave VC1 from a supply voltage VI sup...  
JP2013081114A
To control a PWM output width in minute units accurately.Dead time insertion into positive-phase and opposite-phase PWM signals is processed in the following way. When the output width of PWM signals is smaller than a reference period wh...  
JP5187640B2  
JP5177094B2  
JP5165463B2  
JP2013055620A
To provide a compact and low-cost current control device even in the case of a multi-channel configuration using a microcomputer and a current control IC.The current control device includes: a current control semiconductor element 1; and...  
JP5167196B2  
JP5152741B2  
JP2013038693A
To provide a pulse generation circuit that implements desired control by a controlled object while adopting a configuration for generating an irregular pulse signal.If a predetermined time passes, a count value of a counter CO1 of a coun...  
JP2013038744A
To provide an oscillation circuit that outputs an oscillation signal of a highly precise frequency.The oscillation circuit includes: an RS flip-flop 11 for generating output signals Q, QB on the basis of a set signal and a reset signal; ...  
JP2013038782A
To provide a pulse width modulation control circuit capable of providing a pulse width modulation control signal which reduces the effect of electrostatic capacitance characteristic and inductance on a converter output side, for accurate...  
JP5143515B2  
JP2013026827A
To implement a more detailed fault diagnosis of a PWM timer while suppressing an increase in a processing load on a CPU.A microcontroller (1-10) includes: a central processing unit (11); a PWM signal generation section (200, 21) for gene...  
JP2013021384A
To provide a pulse width modulation system capable of flexibly avoiding frequency interference between an integral multiple frequency of PWM output frequencies and a transmitted wave frequency of AM broadcast.The pulse width modulation s...  
JP2013017047A
To provide a pulse width modulator that has an increased dynamic range by implementing an increased resolution.The pulse width modulator includes: a sequence counter 24 for counting a count value in synchronism with a clock; an intermedi...  
JP5126558B2  
JP2013005301A
To prevent a wasteful discharge of a voltage accumulated in accumulation means.When an output of a comparator COMP1 is at a high level, a capacitor C3 is charged with a voltage of a capacitor C1. When the output of the comparator COMP1 i...  

Matches 651 - 700 out of 4,508