Abstract: A method for modeling an internal object of a human body includes the step of obtaining the original three-dimensional volume data of the internal object of a human body utilizing an ultrasonic imaging device. Thereafter, a desired area of the obtained original three-dimensional volume data is selected and the image quality of the desired area is enhanced. The desired area of the three-dimensional volume data is transformed into a fair shape data. The fair shape data is decimated while a modeled shape is maintained. Finally, a three-dimensional model is shaped using decimated shape data.

Abstract: A ferroelectric liquid crystal display is supplied with voltages by STN driving IC's, and a bias voltage circuit for generating voltages supplied to bias pins of driving IC's is provided. The two composite voltages are supplied to liquid crystal cells during the pixel period and the kinds of composite voltage is five or six. In order to supply these composite voltages to the liquid crystal cells, control signal pins of STN driving IC's are supplied with a signal which is "high" during the first half of pixel period and "low" during the latter half of pixel period, and bias voltage pins are supplied with voltages which should be applied to common electrodes and segment electrodes. The circuit for generating bias voltages such voltages includes a plurality of resistors and two power supplies. Thus, the ferroelectric liquid crystal displays can be economically driven, and the flickering of a picture is decreased.