Motorola Corporation

Robert James Harris

Craig Lawrence Lutgen

Eric S Goldsmith

The remote unit ( ) maintains a count of inserted blank scan lines generated by the remote unit ( ) and uses this to maintain a fixed number of scan lines per page during facsimile transmission. More particularly, in the preferred embodiment of the present invention the remote unit ( ) maintains a fixed number of lines per page by deleting scan lines comprising a predetermined set of characters from the actual facsimile transmitted, until the number of scan lines deleted from the facsimile is equal to the number of blank scan lines generated by the remote unit ( ).

Data transfer within a communication system

A communications link having a plurality of communication media is coupled between an originating facsimile machine and a terminating facsimile machine. The plurality of communication media includes a medium having a variable data transmission time followed serially by a media having a constant data transmission time. In the communication link, a transmission mode acceptance message is intercepted from an acceptance-transmitting one of the terminating and originating facsimile machines. The transmission mode acceptance message is modified to form a modified transmission mode acceptance message for increasing a maximum received data rate in the terminating facsimile machine relative to a transmit data rate in the originating facsimile machine. Thereafter, the modified transmission mode acceptance messages sent to an acceptance-receiving one of the terminating and originating facsimile machines, wherein the modified transmission mode acceptance message is part of a sequence of messages for negotiating transmitting and receiving modes in the originating and terminating facsimile machines, respectively, which sequence permits a maximum data rate in the medium having a constant data transmission time to exceed a maximum data rate in the medium having a variable data transmission time, thereby mitigating the effects of the variable time of transmission.

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Fort Worth, TX, United States of America

Robert James Harris