Abstract: Provided is an ultrasonic diagnostic apparatus having a source power supplied from an external power supplier, and the ultrasonic diagnostic apparatus includes: a smoother that smoothens a source power which is supplied from the external power supplier having an external battery and on which a signal of battery information showing a state of the external battery is superimposed; a power supply that supplies the smoothened source power to each component within the ultrasonic diagnostic apparatus; a signal extractor that extracts the signal of the battery information from the source power supplied from the external power supplier; a converter that converts the extracted signal to the battery information; and a first hardware processor that performs control according to the converted battery information.

Abstract: In a method and apparatus for detecting occurrence of aliasing in a digital oscilloscope and displaying an alarm on a display unit, when an input signal is applied to a trigger generator circuit, the trigger generator circuit generates a trigger pulse. An aliasing detection counter counts the number of the trigger pulses generated in the period of time between scan clock pulses generated from a timebase circuit and applies an aliasing detection signal to a CPU. The CPU displays on the display unit the message indicating occurrence of aliasing.