Patent ID: 7127673

Claim:
A display system in which a processed document data from original document data, in conformity with a display specification data stored in a storage device and a layout data contained in the original document data, is displayed on a display unit, comprising: an interface coupled to receive the original document data; a central processing unit comprising a display specification detection unit detecting a display specification data related to the display unit, the display specification data representing specifications of the display unit; a layout data detection unit detecting the layout data of the original document data, identifying text/image data elements through classification of the original document data, reading a maximum display resolution from text data elements, including an optimum font size; an operation unit utilized by a user to input a desired font type; wherein the central processing unit reads document font data, calculates a font size of displayed text data in accordance with readability of the displayed text data, calculates a display size based on the calculated font size, generates the processed document data that reflects the display size calculated and the calculated font size in the desired font type, stores the processed document data into the storage device, transfers the processed document data from the storage device to the central processing unit, and supplies the processed document data to a display memory in the display unit so that the document data is displayed on the display unit in conformity with the display specification data and the layout data; the display memory storing the processed document data so that a document is displayed on the display unit in accordance with the processed document data; and a display control unit facilitating switching between controlling a display layout of the display unit based on the detected display specification data and the detected layout data, so that a display size of text data elements in the document data is readable when being displayed on the display unit and controlling the display unit based on user input such that an image of at least one portion of the display layout is displayed on the display unit with a user-determined display size.