Yuji Kurokawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A figure digitizing system is described which reduces the operator's labor and enables even unskilled operators to digitize figures easily and accurately. The operator places a drawing to be read on an image information reader and points to characteristic points of the drawing by means of a cursor equipped with an image reader. A CPU operates in accordance with a program loaded from an external memory unit to determine the coordinates of the characteristic points and to display marks of the characteristic points on a display unit. The operator enters the drawing into the system while viewing the marks of characteristic points displayed on the display unit.
Abstract: An electronic learning machine having an input unit for inputting data relating to a specific student. When the data relating to the student is entered by the input unit, a select unit selects the scholastic achievement data related to the student from a first storage unit. A control unit then selects, when so directed, problem information matching the student's scholastic ability from problem information at all difficulty levels stored in a second storage unit and displays the selected problems on the display or on a printing paper. Thus, the student is faced with problems at a difficulty level matching his/her scholastic ability to enhance learning.
Abstract: A word processor that shows, on a display screen, in which place of a text a line will be drawn and, further, which kind of line will be printed out later. In a line ruler mode, the word processor displays a line pointing cursor instead of a normal cursor on the display screen. Here, the line pointing cursor has an arrowhead which points at one corner of the character region so as to indicate the starting point of a line to be ruled and has a line display portion in which a structure of line type to be printed by the printer is displayed.
Abstract: A printer having a first memory for storing character data representative of lines of characters to be printed on a recording medium, a second memory for storing line-space data representative of a line spacing between the lines of characters, and a control device for activating a print head according to the character data stored in the first memory, and controlling the print head and a paper feed device according to the line-space data stored in the second memory, to underscore at least one of the characters of the printed lines. The position of the underscore is controlled such that a distance between the underscore and the underscored characters is varied depending upon the line spacing represented by the line-space data.
Abstract: An electronic typewriter has a vertical tab key for printing one continuous vertical line, extending in a plurality of printing lines. By operating the vertical tab key, a control unit detects a set paper feed amount and feeds the paper reversely to a position whereat printing of a vertical line is done, in alignment with a vertical line printed in a previous printing line, thereby to print a continuous vertical line. The paper is fed forwards by an amount less than the unit length of vertical line which can be an amount less than a unit length of the vertical line as one character, and then the vertical line is printed. Such operations are repeated so that one vertical line continues from the vertical line of the previous printing line to the present printing line.