Abstract:
A clock switch device includes a control circuit and a tri-state buffer. The control circuit deactivates an output enable signal when a frequency of a clock signal varies and activates the output enable signal when the frequency of the clock signal is maintained without change. The tri-state buffer maintains an output electrode at a high impedance state when the output enable signal is deactivated and buffers the clock signal and outputs the buffered clock signal through the output electrode as an output clock signal when the output enable signal is activated.
Abstract:
A method and apparatus for mitigating electromagnetic noise in an electronic device. The method includes generating a trigger clock signal at a first frequency, and generating a second clock signal at a second frequency. The second frequency is higher than the first frequency. The method also includes receiving an input signal with a converter circuit, detecting an event based on the trigger clock signal, and predicting a time for a conversion of the input signal based on the detected event. The method further includes blanking the second clock signal for a predetermined period based on the predicted time for a conversion.
Abstract:
Aspects of the disclosure provide a data storage circuit. The data storage circuit includes a first latch, a second latch, and a clock gating and buffer circuit. The first latch is configured to provide an intermediate output to the second latch in response to a data input when a clock signal is in a first state and to hold the intermediate output when the clock signal is in a second state, and the second latch is configured to provide a data output in response to the intermediate output and the clock signal. The clock gating and buffer circuit is configured to provide the clock signal, and to suppress providing the clock signal to one or both of the first latch and the second latch when the intermediate output stays unchanged.
Abstract:
A signal processing circuit may be provided. The signal processing circuit may include a mask generation circuit configured to output a mask signal in response to an internal control signal and masking information; and a masking circuit configured to mask the internal control signal in response to the mask signal, and output a masked control signal, wherein the mask generation circuit resets the mask signal in response to an internal reset signal, regardless of a pause polarity of the internal control signal.
Abstract:
Provided is a pulse generator that generates a pulse signal with a preferred waveform and offers increased isolation for a period of time when the pulse signal is not output.A pulse generator 100 allows a high-frequency oscillator 101 to output a high frequency signal and allows an amplifier 102 to amplify and output the signal. The amplifier 102 amplifies the high frequency signal from the high-frequency oscillator 101 and outputs the signal only for a period of time when its drive power is supplied by a drive circuit 110. The waveform of the drive power, supplied from the drive circuit 110 to the amplifier 102, is controlled by a waveform control unit 120 such that the high frequency signal amplified by the amplifier 102 becomes an ultra-wideband pulse signal.
Abstract:
A template pulse generating circuit that generates a template pulse used for detection of a received pulse in pulse communication includes an output mode switching circuit for switching an output mode in accordance with a supplied control signal between a continuous output mode that continuously outputs the template pulses and an intermittent output mode that intermittently outputs the template pulses so that the template pulse is generated in either one of the continuous output mode and the intermittent output mode.
Abstract:
There is provided a small-size, low-power-consumption intermittent operation circuit capable of obtaining an output waveform having a rapid rise and fall. The intermittent operation circuit includes an active circuit (106), a first control signal generation circuit (101) for generating a first control signal (S1) for controlling the operation start and the operation end of the active circuit (106), a second control signal generation circuit (102) for generating a second control signal (S2) causing the active circuit (106) to perform ringing vibration and controlling the frequency and the amplitude value of the ringing vibration, and a timing adjusting circuit (103) for adjusting the input timing of the first and the second control signal (S1, S2) into the active circuit (106) so that the ringing vibration and the safety vibration are outputted continuously from the active circuit (106).
Abstract:
In order to increase the speed at which a workpiece is tested by the ultrasonic pulse-echo method, the dead time between individual measurement time intervals is shortened by providing a minimum predetermined time interval selected for the specific test conditions. When an echo responsive signal is manifest in the receiving circuit, in order to prevent the occurrence of phantom echo signals arising in the following measuring interval, the generation of the succeeding transmit signal is inhibited for the predetermined time interval after receipt of the last echo responsive electrical signal of the measuring interval having an amplitude exceeding a predetermined minimum amplitude. The test speed therefore, is made adaptive to the condition of the receipt of the number of echo responsive electrical signals exceeding a predetermined minimum amplitude.