Reader system for removable two dimensional code
First Claim
1. A bar code reader system, comprising:
- a record having a substrate with an information area containing first data removably encoded on the substrate in an error-correctable machine readable format and text;
a bar code reader for converting the first encoded data from the record into electrical signals;
decoding means for decoding the electrical signals corresponding to the first encoded data;
processing means for encoding second data entered through an entering means, said processing means generating transfer drive signals for controlling the transfer of said second encoded data onto said record;
transferring means for detecting whether the record contains said first encoded data;
erasing means, in response to said drive signals when said first encoded data is detected on the record, for subjecting the record to an erasing operation to remove said first encoded data from said record;
bypassing means for bypassing the erasing operation performed by the erasing means when said first encoded data is not detected on the record; and
printing means for printing said second encoded data on said record.
1 Assignment
0 Petitions
Accused Products
Abstract
A bar code reader system includes a record, a bar code reader, a decoder, a processor, a transferring element, and a printer. The record includes a substrate with an information area containing first data removably encoded on the substrate in an error-correctable machine readable format and text. The bar code reader converts the first encoded data from the record into electrical signals which are decoded by the decoder. The processor encodes second data entered through a keyboard, and generates transfer drive signals for controlling the transfer of the second encoded data onto the record. The transferring element detects the presence of the first encoded data on the record, and in response to the drive signals when the first encoded data is present on the record, subjects the record to an erasing operation to remove the first encoded data. The printer then prints the second encoded data on the record.
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Citations
23 Claims
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1. A bar code reader system, comprising:
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a record having a substrate with an information area containing first data removably encoded on the substrate in an error-correctable machine readable format and text; a bar code reader for converting the first encoded data from the record into electrical signals; decoding means for decoding the electrical signals corresponding to the first encoded data; processing means for encoding second data entered through an entering means, said processing means generating transfer drive signals for controlling the transfer of said second encoded data onto said record; transferring means for detecting whether the record contains said first encoded data; erasing means, in response to said drive signals when said first encoded data is detected on the record, for subjecting the record to an erasing operation to remove said first encoded data from said record; bypassing means for bypassing the erasing operation performed by the erasing means when said first encoded data is not detected on the record; and printing means for printing said second encoded data on said record. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for reading data from a record having a substrate with an information area containing first data removably encoded on the substrate in an error-correctable machine readable format and text, comprising the steps of:
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converting the first encoded data from the record into electrical signals; decoding the electrical signals corresponding to the first encoded data; receiving second data; encoding said second data; generating transfer drive signals for controlling the transfer of said second encoded data onto said record; detecting whether the record contains said first encoded data; subjecting the record to an erasing operation to remove said first encoded data from said record in response to said drive signals when said first encoded data is detected on the record; bypassing the subjecting step when said first encoded data is not detected on the record; and printing said second encoded data on said record.
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18. A method for reading data from a record having a substrate with an information area containing first data removably encoded on the substrate in an error-correctable machine readable format and text, comprising the steps of:
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receiving second data; encoding the second data; generating transfer drive signals for controlling the transfer of the second encoded data onto the record; detecting whether the record contains the first encoded data; frictionally removing the first encoded data from the record by using material independent of the first encoded data in response to the drive signals when the first encoded data is detected on the record; bypassing the frictionally removing step when the first encoded data is not detected on the record; and printing the second encoded data on the record.
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19. A method for reading data from a record having a substrate with an information area containing first data removably and directly imprinted on the substrate in an error-correctable machine readable format and text, comprising the steps of:
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receiving second data; encoding the second data; generating transfer drive signals for controlling the transfer of the second encoded data onto the record; detecting whether the record contains the first data; eliminating the first data from the substrate on which the first data is directly imprinted in response to the drive signals when the first data is detected on the record; bypassing the eliminating step when the first data is not detected on the record; and printing the second encoded data on the record.
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20. A method for reading data from a record having a substrate with an information area containing first data removably encoded on the substrate in an error-correctable machine readable format and text, comprising the steps of:
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receiving second data; encoding the second data; generating transfer drive signals for controlling the transfer of the second encoded data onto the record; detecting whether the record contains the first encoded data; creating an area within the information area of the record for printing the second encoded data in response to the drive signals when the first encoded data is detected on the record; bypassing the creating step when the first encoded data is not detected on the record; and printing the second encoded data on the record.
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21. A method for reading data from a record having a substrate with an information area containing first data removably encoded on the substrate in an error-correctable machine readable format and text, comprising the steps of:
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receiving second data; encoding the second data; generating transfer drive signals for controlling the transfer of the second encoded data onto the record; detecting whether the record contains the first encoded data; chemically altering the first encoded data on the record in response to the drive signals when the first encoded data is detected on the record; bypassing the chemically altering step when the first encoded data is not detected on the record; and printing the second encoded data on the record.
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22. A method for reading data from a record having a substrate with an information area containing first data removably and directly imprinted on the substrate in an error-correctable machine readable format and text, comprising the steps of:
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receiving second data; encoding the second data; generating transfer drive signals for controlling the transfer of the second encoded data onto the record; detecting whether the record contains the first data; changing the substrate on which the first data is directly imprinted sufficient to make the first data unreadable in response to the drive signals when the first data is detected on the record; bypassing the changing step when the first data is not detected on the record; and altering the substrate sufficient to make the second encoded data readable.
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23. A method for reading data from a record having a substrate with an information area containing first data removably encoded on the substrate in an error-correctable machine readable format and text, comprising the steps of:
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receiving second data; encoding the second data; generating transfer drive signals for controlling the transfer of the second encoded data onto the record; detecting whether the record contains the first encoded data; erasing the first encoded data from the record by using material independent of the first encoded data in response to the drive signals when the first encoded data is detected on the record; bypassing the erasing step when the first encoded data is not detected on the record; and printing the second encoded data on the record.
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Specification