Facsimile and static presentation processing – Facsimile – Picture signal generator
Reexamination Certificate
1998-05-08
2001-09-25
Lee, Cheukfan (Department: 2722)
Facsimile and static presentation processing
Facsimile
Picture signal generator
C358S474000, C358S487000, C358S496000, C358S497000
Reexamination Certificate
active
06295144
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to shuttle scanning systems, generally, and, more particularly, to pre-scanning for a shuttle-scanning process and apparatus in order to preclude a scan creation of a gap by scanning a document with a carrier sheet or by scanning only the document during recirculation of the document.
2. Discussion of Related Art
In recent years, several office automation machines have been combined into one system. Remarkable progress has been made toward the development of a multi-tasking system by combining a printer, a facsimile machine, a scanner, together with other components of image formation equipment. Exemplary practice in the art is found in the structure illustrated by the Image Reproducing Apparatus With CCD Scanner And Bubble Jet Printer Simultaneously Driven By A Common Belt In Opposite Directions And Operated Asynchronously of Charles D. Wilson, U.S. Pat. No. 4,839,741, and the Scanner Document Absence Code System of J. R. graves and J. E. Summers, U.S. Pat. No. 5,119,213, with the concept of making an initial “rough reading” by the Image Reading Apparatus of Teruhiko Uno, U.S. Pat. No. 5,128,777; while multi-tasking is illustrated in the Combined Electrographic Printer, Copier, And Telefax Machine With Duplex Capability of Kensuke Fukae and Shozo Kaieda, U.S. Pat. No. 4,814,798. More recent efforts in the art are found in the High Efficiency Multi-image Scan Method of Michael Hsieh, et al, U.S. Pat. No. 5,719,386 and the Add-on Scanner For Existing Ink Jet Printer of C. K. Lim, et al, U.S. Pat. No. 5,532,825. I have noticed that the art fails to adequately address the occurrence a scan gap when the document to be subjected to a normal scan is fed backwardly after completion of pre-scanning; consequently, a section of the document called a scan gap, is not available to be scanned.
SUMMARY OF THE INVENTION
It is therefore, an object of the present invention to provide an improved process and apparatus for scanning the textual content of documents.
It is another object to provide a process and apparatus enabling the scanning of the entirety of the textual content of each cut sheet of a document.
It is still another object to provide a process and apparatus able to avoid the occurrence of a scan gap during the scanning of the text of a cut sheet.
It is yet another object to provide a pre-scanning process and apparatus for a shuttle scanning system that precludes occurrence of a scan gap during subsequent scanning of the textual images borne by a cut sheet.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, the present invention contemplates a pre-scanning technique using a shuttle scanning system including the steps of inserting a document into a carrier sheet of transparent material with a recognition code; pre-scanning the document held in the carried sheet; and feeding the carrier sheet back.
According to another aspect of the present invention, a pre-scanning technique for a shuttle scanning system may forward a document in response to an applied scanning signal and pre-scanning the document with a low resolution; discharge the document via a feed roller after pre-scanning; re-insert the discharged document into a paper feeding part; and transfer and scan the document re-inserted into the paper feeding port, albeit at a higher resolution.
According to still another aspect of the present invention, a pre-scanning technique using a shuttle scanning system includes the steps of inserting either a document to be scanned or a carrier sheet holding the document into a manual feeder; forwarding a leading end of the document to a scanning starting point; scanning the leading end of the document and confinning if there is a recognition code; performing a corresponding pre-scanning in response to the existence or non-existence of the recognition code; and discharging the document after scanning.
If there is the recognition code, the scanning step includes the sub-steps of performing a pre-scanning; feeding the pre-scanned document back; setting a scanning region of the document; and scanning the document's scanning region. If there is no recognition code, the scanning step includes the sub-steps of performing a pre-scanning; discharging the document after pre-scanning; re-inserting the discharged document into a manual feeder; feeding the document to a scanning line; setting a scanning region of the document; and scanning the document's scanning region.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
REFERENCES:
patent: 4757348 (1988-07-01), Rourke et al.
patent: 4814798 (1989-03-01), Fukae et al.
patent: 4839741 (1989-06-01), Wilson
patent: 5114139 (1992-05-01), Kodama
patent: 5119213 (1992-06-01), Graves et al.
patent: 5128777 (1992-07-01), Uno
patent: 5513017 (1996-04-01), Knodt et al.
patent: 5532825 (1996-07-01), Lim et al.
patent: 5719386 (1998-02-01), Hsieh et al.
patent: 5781314 (1998-07-01), Mochizuki
patent: 5786590 (1998-07-01), Lin
patent: 5798522 (1998-08-01), Lin
patent: 5894355 (1999-04-01), Lin
patent: 6043866 (2000-03-01), Kawai et al.
Bushnell , Esq. Robert E.
Lee Cheukfan
Samsung Electronics Co,. Ltd.
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