Method for achieving accurate optical character reading of printed text

Claim 1

A method of adding check symbols to lines of printed text during the printing process which improves the accuracy of optical character reading of each line of information which comprises: (a) generating an electrical signal which represents the USASC II code for each alpha-numeric character produced during the printing of a line of text, (b) assembling the sequence of USASC II code signals so generated in a correctable line buffer, (c) adding, deleting and replacing USASC II code signals as appropriate in the correctable line buffer for alpha-numeric characters added, deleted and replaced as appropriate in the production of a corrected line of text, (d) unloading the USASC II code signals in the line buffer by actuating an end of the line gate at the completion of the printing and correction as appropriate of a line of text as a serial bit stream input to a generating polynomial coding circuit, (e) operating the generating polynomial code circuit to obtain a unique 24-bit remainder, (f) translating the 24-bit remainder as a sequence of eight octal numerals, and (g) printing the sequence of octal numerals so obtained as check symbols in the right margin space adjacent to the line of printed text.

Claim 2

A method of adding check symbols to lines of printed text during the printing process which improves the accuracy of optical character reading of each line of information which comprises: (a) generating an electrical signal which represents the USASC II code for each alpha-numeric character produced during the printing of a line of text, (b) assembling the sequence of USASC II code signals so generated in a correctable line buffer, (c) adding, deleting and replacing USASC II code signals as appropriate in the correctable line buffer for alpha-numeric characters added, deleted and replaced as appropriate in the production of a corrected line of text, (d) unloading the USASC II code signals in the line buffer by actuating an end of the line gate at the completion of the printing and correction as appropriate of a line of text as a serial bit stream input to a generating polynomial coding circuit, (e) operating the generating polynomial code circuit to obtain a unique 24-bit remainder, (f) translating the 24-bit remainder as a sequence of eight octal numerals, and (g) printing the sequence of octal numerals so obtained as check symbols in the right margin space adjacent to the line of printed text.

Claim 6

A method of checking for errors in the optical character reading of lines of text which comprises: (a) adjusting the alpha-numeric character identification logic of the OCR (Optical Character Reader) so that all characters and check symbols within the line of text are read and that a complete serial ASCII bit stream is produced, (b) processing the serial bit stream so produced for each line of text as follows: i. processing that portion of the bit stream generated by the OCR for alpha-numeric characters as input to a generating polynomial coding circuit; ii. operating the generating polynomial code circuit to obtain a unique 24 bit remainder; and iii. translating that portion of the bit stream generated by the OCR for check symbols as a unique 24-bit sequence; (c) adding, modulo 2, the unique 24-bit remainder obtained in (b) (ii) supra to the unique bit sequence obtained in b.iii supra and upon obtaining a zero sum the text is released for routine subsequent operations; and (d) reprocessing is carried out as follows upon obtaining a non-zero sum for 2(c). i. reprocessing the original serial bit stream in accordance with (a),(b) and (c) supra for verification of the non-zero sum upon obtaining a zero sum the text is released for routine subsequent operations; ii. re-reading the line of printed text with an Optical Character Reader having higher order alpha-numeric character identification logic in accordance with (a),(b) and (c) for verification of the non-zero sum, upon obtaining a zero sum the text is released for routine subsequent operations, and iii. reprocessing in accordance with (d.)(i) and (d.)(ii) as appropriate and obtaining a non-zero sum, routing the video signals obtained by the Optical Character Reader to a signal processor for translating such signals to a facsimile format, and releasing said facsimile format for routine subsequent operations.

Claim 7

A method of checking for errors in the optical character reading of lines of text which comprises: (a) adjusting the alpha-numeric character identification logic of the OCR (Optical Character Reader) so that all characters and check symbols within the line of text are read and that a complete serial ASCII bit stream is produced, (b) processing the serial bit stream so produced for each line of text as follows: i. processing that portion of the bit stream generated by the OCR for alpha-numeric characters as input to a generating polynomial coding circuit; ii. operating the generating polynomial code circuit to obtain a unique 24 bit remainder; and iii. translating that portion of the bit stream generated by the OCR for check symbols as a unique 24-bit sequence; (c) adding, modulo 2, the unique 24-bit remainder obtained in (b) (ii) supra to the unique bit sequence obtained in b.iii supra and upon obtaining a zero sum the text is released for routine subsequent operations; and (d) reprocessing is carried out as follows upon obtaining a non-zero sum for 2(c). i. reprocessing the original serial bit stream in accordance with (a),(b) and (c) supra for verification of the non-zero sum upon obtaining a zero sum the text is released for routine subsequent operations; ii. re-reading the line of printed text with an Optical Character Reader having higher order alpha-numeric character identification logic in accordance with (a),(b) and (c) for verification of the non-zero sum, upon obtaining a zero sum the text is released for routine subsequent operations, and iii. reprocessing in accordance with (d.)(i) and (d.)(ii) as appropriate and obtaining a non-zero sum, routing the video signals obtained by the Optical Character Reader to a signal processor for translating such signals to a facsimile format, and releasing said facsimile format for routine subsequent operations.

Claim 11

A method of preparation and optical character reading of printed text which reduces the error in the optical character reading process which comprises: (a) generating an electrical signal which represents the USASC II code for each alpha-numeric character produced during the printing of a line of text, (b) assembling the sequence of USASC II code signals so generated in a correctable line buffer, (c) adding, deleting and replacing USASC II code signals as appropriate in the correctable line buffer for alpha-numeric characters added, deleted and replaced as appropriate in the production of a corrected line of text, (d) unloading the USASC II code signals in the line buffer by actuating an end of the line gate at the completion of the printing and correction as appropriate of a line of text as a serial bit stream input to a generating polynomial coding circuit, (e) operating the generating polynomial code cirucit to obtain a unique 24-bit remainder, (f) translating the 24-bit remainder as a sequence of eight octal numerals, (g) printing the sequence of octal numerals so obtained as check symbols in the right margin space adjacent to the line of printed text, (h) adjusting the alpha-numeric character identification logic of the OCR (Optical Character Reader) so that all characters and check symbols within the line of text are read and that a complete serial ASC II bit stream is produced, (i) processing the serial bit stream so produced for each line of text as follows: i. procesing that portion of the bit stream generated by the OCR for alpha-numeric characters as input to a generating polynomial coding circuit; ii. operating the generating polynomial code circuit to obtain a unique 24-bit remainder; and iii. translating that portion of the bit stream generated by the OCR for check symbols as a unique 24-bit sequence; (j) adding, modulo 2, the unique 24-bit remainder obtained in (b).(ii) supra to the unique bit sequence obtained in (b).(iii) supra; and upon obtaining a zero sum the text is released for routine subsequent operations; and (k) reprocessing is carried out as follows upon obtaining a non-zero sum of 3(j): i. reprocessing the original serial bit stream in accordance with (h),(i) and (j) supra for verification of the non-zero sum, upon obtaining a zero sum the text is released for routine subsequent operations; ii. re-reading the line of printed text with an Optical Character Reader having higher order alpha-numeric character identification logic in accordance with (h),(i) and (j) supra for verification of the non-zero sum, upon obtaining a zero sum, the text is released for routine subsequent operations, and iii. reprocessing in accordance with (k).(i) and (k).(ii) as appropriate and obtaining a non-zero sum, routing the video signals obtained by the Optical Character Reader to a signal processor for translating such signals to a facsimile format, and releasing said facsimile format for routine subsequent operations.

Claim 12

A method of preparation and optical character reading of printed text which reduces the error in the optical character reading process which comprises: (a) generating an electrical signal which represents the USASC II code for each alpha-numeric character produced during the printing of a line of text, (b) assembling the sequence of USASC II code signals so generated in a correctable line buffer, (c) adding, deleting and replacing USASC II code signals as appropriate in the correctable line buffer for alpha-numeric characters added, deleted and replaced as appropriate in the production of a corrected line of text, (d) unloading the USASC II code signals in the line buffer by actuating an end of the line gate at the completion of the printing and correction as appropriate of a line of text as a serial bit stream input to a generating polynomial coding circuit, (e) operating the generating polynomial code cirucit to obtain a unique 24-bit remainder, (f) translating the 24-bit remainder as a sequence of eight octal numerals, (g) printing the sequence of octal numerals so obtained as check symbols in the right margin space adjacent to the line of printed text, (h) adjusting the alpha-numeric character identification logic of the OCR (Optical Character Reader) so that all characters and check symbols within the line of text are read and that a complete serial ASC II bit stream is produced, (i) processing the serial bit stream so produced for each line of text as follows: i. procesing that portion of the bit stream generated by the OCR for alpha-numeric characters as input to a generating polynomial coding circuit; ii. operating the generating polynomial code circuit to obtain a unique 24-bit remainder; and iii. translating that portion of the bit stream generated by the OCR for check symbols as a unique 24-bit sequence; (j) adding, modulo 2, the unique 24-bit remainder obtained in (b).(ii) supra to the unique bit sequence obtained in (b).(iii) supra; and upon obtaining a zero sum the text is released for routine subsequent operations; and (k) reprocessing is carried out as follows upon obtaining a non-zero sum of 3(j): i. reprocessing the original serial bit stream in accordance with (h),(i) and (j) supra for verification of the non-zero sum, upon obtaining a zero sum the text is released for routine subsequent operations; ii. re-reading the line of printed text with an Optical Character Reader having higher order alpha-numeric character identification logic in accordance with (h),(i) and (j) supra for verification of the non-zero sum, upon obtaining a zero sum, the text is released for routine subsequent operations, and iii. reprocessing in accordance with (k).(i) and (k).(ii) as appropriate and obtaining a non-zero sum, routing the video signals obtained by the Optical Character Reader to a signal processor for translating such signals to a facsimile format, and releasing said facsimile format for routine subsequent operations.