公开(公告)号：AU2956377A

公开(公告)日：1979-04-26

申请号：AU2956377

申请日：1977-10-11

Applicant: IBM

Inventor： KOLPEK ROBERT ADOLPH ,  MACDUFFEE DAVID LEE ,  ROSENBAUM WALTER STEVEN

IPC: B41J5/30 ,  B41J7/96 ,  G06F3/09 ,  G06F3/12 ,  G06F11/00 ,  G06F17/22 ,  G06F17/27 ,  G06K9/72 ,  G06K15/00 ,  G06K9/08 ,  H04L1/00 ,  G06F15/20 ,  B41B27/48

Abstract: SYSTEM FOR AUTOMATICALLY PROOFREADING A DOCUMENT Spelling errors in a word processing system are detected and presented to the operator for correction at the end of a document page. A dictionary memory contains representations of the correct spellings for words most frequently used. As each word is typed, it is stored in a word queue where it is compared to the contents of the dictionary memory. If the compare is unequal, then the word and its location on the page is stored in an error memory. When an end of page indicator is set the printer automatically repositions the print head at the ending character of the first word in the error list. When the operator keys in the correct spelling, the printer is caused to remove the misspelled word from the page and type the correct spelling. The corresponding word in the error memory is also corrected. As each misspelled word in the error memory is corrected, the remainder of the memory is scanned and repetitions of the same spelling error are automatically corrected.

公开(公告)号：DE2823965A1

公开(公告)日：1979-01-04

申请号：DE2823965

申请日：1978-06-01

Applicant: IBM

Inventor： KETTLER HOWARD GEORGE ,  KOLPEK ROBERT ADOLPH ,  LEXINGTON KY ,  ROSENBAUM WALTER STEVEN

IPC: B41J19/32 ,  B41J19/58 ,  B41J19/64 ,  B41J25/12 ,  B41J25/22 ,  G06F3/12 ,  G06F17/21 ,  G06K15/00 ,  G06K15/08 ,  B41B27/36

Abstract: The aesthetic characteristics of adjacent characters are used to enhance the quality of output in a proportional spacing printer and to provide right margin justification for composing. Spacing between characters is determined on the basis of the character being printed and the preceding character already printed on the page. An intercharacter displacement memory contains a list of ideal spacing for all combinations of characters to be printed. As each character is typed, it and the previously stored preceding character address the intercharacter displacement memory. The output of the intercharacter displacement memory is the ideal value of escapement for this combination of characters and font style. The printer positions the print head prior to printing the next character, rather than positioning the print head after the previous character is printed. Line ending decisions for composing are eliminated during initial and final typing of a document by adding to the intercharacter displacement memory recommendations for altering the ideal spacing between characters, where aesthetically possible, to eliminate the need for line ending hyphenation. During initial keying, escapements for adjacent pairs of characters are totaled in a memory for ideal, shortest (tight), and longest (loose) recommended escapements. The line is automatically terminated within the justification range by a carrier return function based on the escapement totals and the selected right margin. Final playout of the page from memory alters the intercharacter escapements from the ideal values to either longer or shorter escapements depending on whether the line is to be lengthened or shortened.

公开(公告)号：DE2640537A1

公开(公告)日：1977-04-28

申请号：DE2640537

申请日：1976-09-09

Applicant: IBM

Inventor： MULLAN PHILIP JOSEPH ,  ROSENBAUM WALTER STEVEN

IPC: G06K9/03 ,  G06K9/62 ,  G06K9/72 ,  G06K9/06

Abstract: A multi-channel multi-genre character recognition discriminator is disclosed which performs the decision making process between strings of characters coming from a multi-channel (i.e., three or more channels) alpha-numeric output optical character reader (OCR) system for use in such applications as, for example, text processing and mail processing. The multi-channel output OCR uses separate recognition processes for each genre or character set indicative of a distinct group with respect to style (i.e., font) or form, and attempts to recognize each character independently as belonging to each respective genre. For example, in a three channel output OCR for reading mixed numeric, English and Russian Cyrillic character sets, the English alphabetic interpretation of a scanned word is outputted as an English alphabetic subfield on a first OCR output line, the Cyrillic interpretation of the scanned word is outputted as a Cyrillic subfield on a second OCR output line, and numeric interpretation of the scanned word is outputted as a numeric subfield on a third OCR output line. A multi-channel multi-genre character recognition discriminator analyzes these three subfield character streams by calculating a first conditional probability that given the OCR has scanned and recognized an English alphabetic character Ei, the probability that numeric NK and Cyrillic CJ characters were respectively misrecognized by their recognition channels; a second conditional probability that given the OCR has scanned and recogized a Cyrillic character CJ the probability that numeric NK and English Ei characters were respectively misrecognized by their recognition channels; and a third conditional probability that given the OCR scanned and recognized a numeric character NK, the probability that English Ei and Cyrillic CJ characters were respectively misrecognized by their recognition channels. These conditional probabilities are developed character by character for each character within a string thereof or a word. A first product of all the first type conditional probabilities is calculated for all of the characters in a word (which may, of course, contain only a single character); similarly second and third products are calculated for the second and third conditional probabilities, respectively. The magnitudes of the products of these conditional probabilities are then compared in an N-channel comparator, and the highest probability subfield is selected as the most probable interpretation of the word scanned by the OCR.