Facsimile and static presentation processing – Facsimile – Picture signal generator
Reexamination Certificate
1997-09-16
2001-07-31
Lee, Cheukfan (Department: 2622)
Facsimile and static presentation processing
Facsimile
Picture signal generator
C358S498000, C358S468000, C358S444000, C358S450000
Reexamination Certificate
active
06268937
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to a facsimile system and a method for controlling document transmission, and more particularly, relates to a facsimile system capable of document transmission with shortened transmission time.
2. Related Art
Contemporary facsimile system generally transmits information data of a document on a standard sized paper. Document sensors are positioned at predetermined locations of the facsimile system to detect different sizes of the document for proper transmission via a telephone line. An original document for transmission may be one of several standard sizes, such as A4, B4, A3, and alternatively, of non-standard sizes, such as photographic size or a variety of irregular sizes.
In order to compensate for the difference between the transmission size and the original document size, white pixels are commonly added as dummy data to every transmission lines, which results into an increase of the transmission time and the telephone fee. Exemplars of contemporary facsimile systems using dummy data are disclosed in U.S. Pat. No. 4,047,228 for Receiving System For Facsimile And The Like issued to Yagishita et al., U.S. Pat. No. 4,302,781 for Facsimile System issued to Ikeda et al., U.S. Pat. No. 4,386,373 for Facsimile Apparatus issued to Kondo et al., U.S. Pat. No. 4,549,221 for Video Signal Transmitting System issued to Yamamoto et al., U.S. Pat. No. 4,672,460 for Facsimile Apparatus issued to Facsimile Apparatus issued to Tsuda, U.S. Pat. No. 4,775,893 for Facsimile Transmission System issued to Ishikawa, U.S. Pat. No. 5,428,459 for Facsimile Apparatus For Minimizing Printing Of White Data At End Of Page issued to Asai. While the contemporary facsimile system offers a variety of transmission techniques for reducing the document transmission time, I have noted that detection of paper size as close to the actual size may be effectively used to reduce an amount of dummy data to be transmitted in order to shorten the document transmission time and reduce the telephone fee.
SUMMARY OF THE INVENTION
Accordingly, it is therefore an object of the present invention to provide a facsimile system capable of document transmission with shortened transmission time.
It is also an object to provide a facsimile system capable of faster document transmission with minimal dummy data.
It is another object to provide a facsimile system having a plurality of document sensors positioned at different locations to accurately detect the actual size of a document and transmit the document in accordance with the detected document size in order to reduce the amount of dummy data required for transmission and thereby shortening the document transmission time.
These and other objects of the present invention can be achieved by a facsimile system which includes a first plurality of sensors positioned at different locations along a paper path for detecting a document of different standard sizes; a second plurality of sensors respectively positioned adjacent to said first plurality of sensors along the paper path for detecting the document of different non-standard sized documents; a memory table for semi-standardizing a document size according to an activation status from one of the first and second plurality of sensors; and a controller for controlling transmission of a semi-standard sized document based upon the memory table via a telephone line to reduce a document transmission time.
The present invention is more specifically described in the following paragraphs by reference to the drawings attached only by way of example.
REFERENCES:
patent: 4047228 (1977-09-01), Yagishita et al.
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patent: 4386373 (1983-05-01), Kondo et al.
patent: 4439790 (1984-03-01), Yoshida
patent: 4549221 (1985-10-01), Yamamoto et al.
patent: 4554592 (1985-11-01), Yoshida
patent: 4586088 (1986-04-01), Kondo
patent: 4622594 (1986-11-01), Honjo et al.
patent: 4672460 (1987-06-01), Tsuda
patent: 4775893 (1988-10-01), Ishikawa
patent: 5045953 (1991-09-01), Kotani et al.
patent: 5414522 (1995-05-01), Moriya
patent: 5428459 (1995-06-01), Asai
patent: 5500725 (1996-03-01), Takasu et al.
patent: 5691820 (1997-11-01), Komatsu
patent: 5875033 (1999-02-01), Kawata et al.
Bushnell , Esq. Robert E.
Lee Cheukfan
Samsung Electronics Co,. Ltd.
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