The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 1986
Filed:
Dec. 29, 1982
Mutsuo Ogawa, Tokyo, JP;
Takemi Hashimoto, Tokyo, JP;
Kazuyuki Hara, Tokyo, JP;
Mitsuru Kondo, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A scanning array (12) comprising a plurality of photosensor elements (12a) is reciprocated perpendicular to the axis (12b) thereof to scan a rectangular area of an original document (69). After scanning the area, the document (69) is moved parallel to the axis (12b) of the scanning array (12) and the scanning array (12) reciprocated again to scan a next rectangular area. This process is continued until the entire document (69) is scanned. The photosensor elements (12a) produce data signals corresponding to incident light from the document (69) which are fed serially into an orthogonal conversion memory (26) in the column direction. The data signals are read out of the memory (26) in the row direction and run length encoded for transmission. Received data signals are run length decoded and fed into the memory (26) in the row direction and read out of the memory (26) in the column direction. The received data signals are then applied to a printing array (24) of printing elements (24a) which is reciprocated relative to a sheet of paper (78) in the same pattern as the scanning array (12) to reproduce an image represented by the received data signals. The data signals are subjected to orthogonal conversion for transmission and to reverse orthogonal conversion for reception, thereby increasing the data compression efficiency.