| 摘要 |
The disclosure relates to a charge coupled device (CCD) reader capable of reading and buffer storing the data stored in a punched card. This is accomplished by providing a charge coupled imager which may be of standard design with frames arranged in a rectangular array to coincide with the regions in the card in which holes are capable of being punched. The total size of the frames on the charge coupled device imager can be made large enough relative to the focused image of the punched card so that rotational and translational misalignments of the card will not produce errors. The reader includes a card holder for properly aligning the card with respect to the frames of the imager and an optical source which includes a light and a lens or optical system to properly illuminate all of the possible hole locations on the punched card. In this way, light impinges on those frames of the imager wherein holes have been punched in the punched card, the imager then transforming the charges in the locations wherein light impinges to a buffer region of the CCD to provide the buffering function. The data can then be shifted out of the CCD buffer region in standard manner onto a transmission line or the like.
|
