| 摘要 |
A scanning pen (10) is used in combination with a transparent ruler (36) which guides the movement of the pen (10) over a line of text. An indicia bar (46 and 50) along the length of the ruler (36) independently establishes the time rate in which the pen (10) is manually moved independent of whether the pen (10) is advanced, stopped, or reversed to generate a pixel map. A dictionary (208) of different symbols is established for identification of scanned graphic patterns. The scanning pen (10) may be used either as a point-and-click bar code reader (222), a bar code scanner (224), mouse (218), handwritten data (220), or text data input device (216). Bar codes may be user-defined or standardized and may symbolize alphanumeric data or macro instructions. The scanning pen (10) uses a single linear detector array (52) which can either be used in either a stationary input mode, a linear scan mode, or a two-dimensional mode. In the two-dimensional mode, a timing grid (228) with horizontal (232) and diagonal timing bars (234) of distinguishable thicknesses is employed to track the manual movement of the scanning pen (10). |
