Method of effectively reading data written on data sheet, and data reading apparatus therefor
AssigneeKabushiki Kaisha Toshiba
InventorHiromi Nanba
Life of this patent
Estimating the term…
Abstract
In a character reading apparatus, a slip image having three reference marks printed at three of the four predetermined corners of the slip is stored in an image buffer. The image in the image buffer is scanned to detect the three reference marks. A feed orientation of the slip is determined on the basis of the layout of the three reference marks. Data can be read on the basis of the detected three reference marks and the determined feed orientation of the slip.
Claims14
A data reading apparatus for reading data written on a sheet set in a plurality of reading orientations, comprising:
- image data generating means for scanning the sheet on which a plurality of reference marks are provided for determining the reading orientation of the sheet and generating image data corresponding to the data written on the sheet, the reading orientations including normal, counterclockwise 90 degree, clockwise 90 degree, and 180 degree directions;
- buffer means for storing the image data generated by said image data generating means;
- means for detecting a size of the sheet and position of the sheet stored in said buffer means;
- determining means for determining the reading orientation of the sheet in accordance with the reference marks provided on the sheet stored in said buffer means;
- holding means for holding start and end coordinate data of a reading operation in accordance with the size of the sheet;
- range designating means for designating a first range of the image data stored in said buffer means in accordance with the start and end coordinate data held in said holding means;
- and
- recognizing means for recognizing the image data corresponding to the data written on the sheet within the designated first range.
A data reading method for reading data written on a sheet set in a plurality of reading orientations, comprising the steps of:
- (a) scanning a sheet on which a plurality of references marks are provided for determining the reading orientation of the sheet and generating image data corresponding to the data written on the sheet, the reading orientations including normal, counterclockwise 90 degree, clockwise 90 degree, and 180 degree directions;
- (b) storing the image data generated by said image data generating means in a buffer;
- (c) detecting a size of the sheet and position of the sheet stored in the buffer;
- (d) determining the reading orientation of the sheet in accordance with the reference marks provided on the sheet stored in the buffer;
- (e) determining a start and end coordinate data of a reading range in accordance with the size of the sheet;
- (f) designating a first range of the image data stored in the buffer in accordance with the start and end coordinate data;
- and
- (g) recognizing the image data corresponding to the data written on the sheet within the designated first range.
Dependencies are inferred from the claim text.