Canon Kabushiki Kaisha

Tetsuaki Yaguchi

Masaki Hamada

Akifumi Shirasaka

Akihiko Uekusa

Shinko Sugiyama

A document processing apparatus for easily editing a table includes: an input device to input data corresponding to the number of ruled lines to be displayed; position indicating device for indicating a position on a display screen; a display which can display grids on the display screen at regular intervals; an arithmetic computing circuit to arithmetically compute a line interval between a plurality of ruled lines on the basis of the number data which is input from the input device and the position indicated by the position indicating device; and a display controller for controlling the display so as to display the plurality of ruled lines at regular intervals in correspondence to the display positions of the grids on the basis of the result of the arithmetic computation from the arithmetic operating circuit and an interval between the grids. With this apparatus, ruled lines can be drawn or edited by simple operations without exerting any influence on the other cells or lines.

Document processing apparatus for displaying a plurality of ruled lines

A word processor capable of creating a formula during a document editing process by automatically setting a range of a formula in a document being edited with an instrument of a formula process start command and allowing a switching operation between the document editing process and the formula creating process to be easily made. This allows the formula to be edited on a block basis, thereby facilitating the editing operation such as modification, addition, or deletion of the formula in accordance with any editing of character trains or symbols inside and outside the formula in a well-balanced manner. The word processor is also capable of automatically defining the position, size, and form of a symbol in accordance with the length and form of an object to which the symbol is to be added, so that the position, size, and form of the symbol can be automatically accommodated in accordance with any change in the object to which the symbol is to be added without bothering an operator. The word processor is further capable of not only adding a symbol to an already input text, but also inputting paired symbols which are mutually spaced apart such as a pair of parentheses with a single input operation.

Growing community of inventors

Kawasaki, Japan

Tetsuaki Yaguchi