Abstract: Disclosed is a power device including a connector, a power supply unit, a switch unit, a connector-side voltage detector, a connection determiner, and a switch controller. A battery is detachably connected to the connector. The power supply unit is provided between the connector and external equipment. The switch unit is provided to change over between power supply and power cut-off state unidirectionally from the connector to the power supply unit. The connector-side voltage detector detects a voltage of the connector-side of the switch unit. The connection determiner determines whether the battery is connected to the connector on the basis of the connector-side voltage. The switch controller controls the switch unit such that electric power is supplied unidirectionally from the connector to the power supply unit when the battery is connected.

Abstract: Disclosed is a power device including a connector, a power supply unit, a switch unit, a connector-side voltage detector, a connection determiner, and a switch controller. A battery is detachably connected to the connector. The power supply unit is provided between the connector and external equipment. The switch unit is provided to change over between power supply and power cut-off state unidirectionally from the connector to the power supply unit. The connector-side voltage detector detects a voltage of the connector-side of the switch unit. The connection determiner determines whether the battery is connected to the connector on the basis of the connector-side voltage. The switch controller controls the switch unit such that electric power is supplied unidirectionally from the connector to the power supply unit when the battery is connected.

Abstract: A model selector selects a simulation model on the basis of a selection condition set by a setting device to read out the simulation model from a model data base. A simulation calculator calculates the simulation by using this read out simulation model on the basis of the initial state and the simulation condition set by the setting device.

Abstract: Disclosed is a method and apparatus for printing a pattern which is obtained by making a second basic figure from the first basic figure; making output data based on the second basic figure, the output data representing an output figure which is obtained by joining a plurality of the second basic figures consecutively side by side in both the first and second directions so that the second basic figures are arranged in a plurality of parallel rows extending in the second direction, while shifting in the second direction the second basic figures located in each one of the rows from the second basic figures located in another row adjacent to the one row by a predetermined shifting distance including zero; and printing on a given web the output figure by using the output data; wherein the step of making the second basic figure comprises a first substep of dividing the first basic figure into first and second areas of equal sizes in the first direction; a second substep of dividing in the second direction each of

Abstract: An image processing apparatus in which, when a multi-tone image is printed by using an error diffusion technique, error data to be diffused is modified so that the tone level of the image data as printed varies linearly with variation of an input image data. A printed dot of a pixel has a larger area than that of the theoretical pixel so that the dot juts out into adjacent pixels. The error data to be diffused is modified in consideration of jut-out dot areas of adjacent pixels, so as to obtain a linear variation of the tone-level with variation of the input image data.