公开(公告)号：IT1149962B

公开(公告)日：1986-12-10

申请号：IT2210980

申请日：1980-05-16

Applicant: IBM

Inventor： PENNINGTON KEITH SAMUEL ,  SCHLING EUGENE STEWART ,  WHITE JAMES MERRILL

IPC: H04N1/028 ,  H01L27/14 ,  H01L27/148 ,  H04N1/04 ,  H04N1/48 ,  H04N9/04 ,  H04N9/09 ,  H04N

Abstract: A color facsimile transmission apparatus wherein a beam of white light is dispersed into component colors by a prism. The color dispersed bands of illumination are focused to irradiate a portion of a moving document. The reflected, colored light from the document is focused on the surface of three charge coupled devices (CCDs) so that the red illuminating band irradiates a first CCD and the green and blue bands respectively irradiate the second and third CCDs. The movement of the document causes each line of the document to scroll through the illuminating band over each of the CCDs. The CCDs are operated in the time delay and integration mode to generate charge packets corresponding to the picture elements of the red, green and blue component line images of each line of the document.

公开(公告)号：DE3173980D1

公开(公告)日：1986-04-10

申请号：DE3173980

申请日：1981-08-28

Applicant: IBM

Inventor： WHITE JAMES MERRILL

IPC: H04N1/04 ,  G06T1/00 ,  H04N1/46 ,  H04N1/48

Abstract: A colour separation scanner includes a pair of elongated fluorescent tubes (11, 12) to illuminate an elemental line of a document (13). An optical lens system (14) focusses an image of the line onto a solid state linear array (15) of photosensors. One tube (1) contains a mixture of two phosphors emitting different colours with different persistence. The other tube (12) contains a phosphor emitting a third colour with a different persistence. The lamps are activated alternately so as to illuminate the line with sequentially different predetermined light and mixtures of light from which colour separated images can be taken.

公开(公告)号：DE2853712A1

公开(公告)日：1979-07-12

申请号：DE2853712

申请日：1978-12-13

Applicant: IBM

Inventor： WHITE JAMES MERRILL

IPC: G06K7/00 ,  G06K9/60 ,  G06T1/00 ,  H01L31/02 ,  H04N1/04 ,  H04N1/403 ,  H04N1/02 ,  G06K9/16

Abstract: An image scanning system which alternately illuminates a charge transfer device with a focused, then defocused image of a line at a time of a document in order to provide comparison signals for binarization of the image concurrent with cancellation of dark current and sensitivity variations. The system includes focus-defocus, variable optical path length optical elements which are operated at a reduced speed by processing a line array at a time instead of a single picture element at a time in the image. A single charge transfer device chip comprises the scanner array, and includes a simple analog line memory comprised of light responsive elements, shift registers, gates, and a 1-bit comparator to perform the binarization. The charge transfer devices may be comprised of charge coupled devices (CCD) or bucket brigade devices (BBD) building blocks.