Registers – Coded record sensors – Particular sensor structure
Patent
1990-07-31
1992-12-22
Levy, Stuart S.
Registers
Coded record sensors
Particular sensor structure
235454, 235482, 250569, G06K 710, G06K 1367
Patent
active
051735954
ABSTRACT:
A punchcode reader is provided for reading data encoded in a punchcode hole array on a dosimeter. The dosimeter falls through a passage in the reader containing photosensor detectors disposed along the passage which provide output signals to a microprocessor. The signals are processed to determine the orientation of the dosimeter in the reader, the location and state of punchcode holes in a two row array thereby decoding the encoded data. Multiple rate of fall calculations are made, and if appropriate matching of the punchcode array is not obtained in three tries, an error signal is outputted to the operator. The punchcode reader also provides for storage of data from multiple dosimeters passed through the reader, and for the output of decoded data to an external display or a computer for further processing.
REFERENCES:
patent: 3200194 (1965-08-01), Rabinow
patent: 3592972 (1971-07-01), Lane
patent: 3638017 (1972-01-01), Jones et al.
patent: 3857019 (1974-12-01), Holtey
patent: 3993893 (1976-11-01), Graf
patent: 4438328 (1984-03-01), Kuranishi et al.
patent: 4447715 (1984-05-01), Vulcano
Chafin James H.
Levy Stuart S.
Moser William R.
Ojanen Karla
Sikorski Edward H.
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