摘要:
A signal interference prevention wiring is disposed between two wirings which are arranged in parallel for transmitting a signal, and the signal interference prevention wiring is held at a constant potential.
摘要:
A method for reproduction of a multi-tone color image by combination of chromatic inks of cyan, magenta and yellow together with an achromatic ink of black. In the region of lower tone levels than a prescribed value, the image is formed by the complete under color removal, namely, by the sole use of the achromatic ink. In the region of higher tone levels than the prescribed value, the reproduction of the image is attained by performing the under color removal at a ratio of decrease relative to the rise of the tone levels, namely by causing the chromatic inks to overlap the achromatic ink.
摘要:
A successive approximation type A/D converter of the present invention has a capacitor having a predetermined capacitance value and arranged between an input terminal of a voltage comparator and a fixed potential terminal having a predetermined potential. According to the successive approximation type A/D converter of the present invention, the capacitor arranged between the input terminal of the voltage comparator and the fixed potential terminal having the predetermined potential prevents a potential at the input node of the voltage comparator from being greatly changed to exceed a power source voltage range due the influences of a local D/A converter when the sample mode is switched to the approximation mode. Therefore, the leakage of charges stored in the input side of the voltage comparator can be prevented. Accordingly, even if the amplitude of an analog input voltage is equal to the amplitude of the power source voltage, high-precision A/D conversion can still be performed.
摘要:
A voltage comparator circuit that is useful in A/D converters and D/A converters. The circuit comprises a comparison capacitor, a holding capacitor and input switching transistors. The holding capacitor holds the comparison voltage applied to it from the input switching transistors through the comparison capacitor. Therefore, the circuit can perform accurate voltage comparison even if the input voltages are sampled at a high sampling frequency.
摘要:
A digital-to-analog converter of current segment type, having a plurality of first variable current sources and a second variable current source of the same structure as the first variable current sources. The converter further comprises a comparator. The comparator compares a voltage corresponding to the output current of the second variable current source with a reference voltage. The difference between these compared voltages is used to determine the output currents of the first variable current sources.
摘要:
A Schmitt trigger astable multivibrator circuit includes a first inverter, a second inverter whose input terminal is connected to the output terminal of the first inverter, a third inverter which is constituted by a first P-channel transistor and a first N-channel transistor serially connected and whose input and output terminals are respectively connected to the output and input terminals of the second inverter. The Schmitt trigger astable multivibrator circuit further includes a second P-channel transistor connected between a positive power supply terminal and the first P-channel transistor, and a second N-channel transistor connected between a ground terminal and the first N-channel transistor, and an input signal supplied to the first inverter is also applied to the gates of the second P-channel and N-channel transistors. The astable multivibrator also includes a time constant circuit, activated in response to the second inverter's output, which connects to the first inverter's input.
摘要:
An input terminal of an interface circuit is connected to a first logic circuit which produces a first logic signal. The interface circuit compares the first logic signal with a reference voltage whose level is set between a high level and a low level of the first logic signal. The interface circuit converts levels of the signal compared. An output terminal of the interface circuit is connected to a second logic circuit whose signal levels are different from levels of the first logic signal and which is driven by the output signal compared and amplified.
摘要:
An inverter is controlled by first clock pulses for converting a positive power supply into second clock pulses having a first voltage level of the power supply and a second voltage level of a reference voltage. The second clock pulses are supplied to a capacitor. The source-drain path of a first impedance varying P-FET is connected between the output terminal of the capacitor and the reference voltage and is controlled so as to take a low impedance when the second clock pulses are at the first voltage level while a high impedance when the second clock pulses are at the second voltage level. The source-drain path of a second impedance varying P-FET is connected between the output terminal and a terminal for taking out a polarity-reversed voltage. The second impedance varying P-FET is supplied at the gate with the first clock pulses so as to be controlled to take a high impendance when the second clock pulses are at the first voltage level and a low impedance when the second clock pulses are at the second level.
摘要:
A sealing cover (10) is provided for closing an opening of an equipment case that accommodates electric equipment of a car. The electric equipment includes a circuit with an operation control portion for switching a main circuit from an operating state to a shutdown state in accordance with signals inputted to an input terminal thereof. The sealing cover (10) has a cover body (11) mounted on the equipment case to close the open part. An interlocking connector (35) is provided on the cover body (11) and is connected to the input terminal when the cover body (11) is mounted on the equipment case and disconnected from the input terminal when the cover body (11) is removed from the equipment case to switch the main body circuit from the operating state to the shutdown state.
摘要:
A sealing cover (10) is provided for closing an opening of an equipment case that accommodates electric equipment of a car. The electric equipment includes a circuit with an operation control portion for switching a main circuit from an operating state to a shutdown state in accordance with signals inputted to an input terminal thereof. The sealing cover (10) has a cover body (11) mounted on the equipment case to close the open part. An interlocking connector (35) is provided on the cover body (11) and is connected to the input terminal when the cover body (11) is mounted on the equipment case and disconnected from the input terminal when the cover body (11) is removed from the equipment case to switch the main body circuit from the operating state to the shutdown state.