发明名称 Arrangement and method for reading in and compression of data for telefax transmission
摘要 The present invention relates to an arrangement and a method for reading in and compression of data for telefax transmission or document reading. The arrangement comprises photo-diodes (1) arranged on a substrate in matrix form, which photo-diodes, in conjunction with picture-processing and signal-processing circuits linked to the photo-diodes and control logic, are executed in integrated form on one and the same substrate. The aforementioned picture-processing and signal-processing circuits comprise a first logic circuit (6), which is so arranged as to detect picture elements in a signal read in by the photo-diodes, which picture elements satisfy a predetermined digital condition. A second logic circuit (7) is so arranged as to detect the edges of the aforementioned picture elements, and a third logic circuit (8) is so arranged as to eliminate elements detected by preceding circuits from the stored signal. The signal is finally converted in a digital network (17) of a combinative or sequential kind into a compressed form suitable for telefax transmission or document reading.
申请公布号 AU1905095(A) 申请公布日期 1995.09.25
申请号 AU19950019050 申请日期 1995.02.16
申请人 IVP INTEGRATED VISION PRODUCTS AB 发明人 ROBERT FORCHHEIMER;BJORN WASELL
分类号 H04N1/417 主分类号 H04N1/417
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