Patent ID: 6972862

Claim:
A portable fax machine, comprising: a pen-based input device, comprising a writing pen and a writing pad, enabling a user to write documents for fax transmission on the writing pad by means of the writing pen, wherein said input device is capable of generating data representative of the moving trace of the pen-based input device and of recording a user's written input in a strokes data format, each stroke comprising a series of position coordinates of pen-based input device between a pen-down event and a pen-up event; an encoder for transferring the stroke format data representative of the moving trace of the writing pen into fax data format, said encoder comprising: a data filter filtering the data generated by the pen-based input device to extract the stroke data represented by x and y coordinates, and a format generator transferring the stroke data into data in the standard fax data fonnat by interpolating, sorting and encoding and wherein said format generator batch processes blank lines between non-blank lines during the encoding procedure; a dialer for inputting the fax number of a destination to set up a connection herewith; and a fax transmission device for transmitting to the destination the data in the fax data format output from the encoding means.