Patent ID: 6075623
Filing Date: 2000-06-13
Classification: H04N

Abstract:
A document paper size detection method in a facsimile, comprising the steps of:determining whether said facsimile is operating in a book scanning mode or a sheet feeding mode;moving a charge coupled device (CCD) module, having a CCD sensor therein, to a scan starting position when it is determined that said facsimile is operating in a book scanning mode;performing a scanning operation until said CCD module reaches a scan end position;moving said CCD module to a location for detecting an optical sensor reflecting unit attached to one end of an adjustable paper guide when it is determined that said facsimile is operating in said sheet feeding mode;calculating, based upon an optical alignment of said optical sensor reflecting unit with one of a plurality of sensor cells of said CCD sensor, a paper size of a sheet of paper to be scanned in said sheet feeding mode;moving said CCD module to a location for scanning said sheet of paper;feeding said sheet of paper past said location for scanning said sheet of paper and scanning said sheet of paper;determining whether another sheet of paper is to be scanned;repeating said feeding step until it is determined that there are no more sheets of paper to be scanned.