Communications: electrical – Digital comparator systems
Patent
1977-08-22
1978-05-02
Boudreau, Leo H.
Communications: electrical
Digital comparator systems
3401463H, 3401463Z, G06K 918
Patent
active
040877906
ABSTRACT:
A method and system for automatic optical character recognition wherein a continuous flow of image data is processed at a high scan rate. A two dimensional array of self scanning photo sensors is disposed to read characters located on a writing medium. Analog outputs of the cells of the photo sensor array are converted to a continuous flow of binary signals representing character segments or the absence thereof. Feature codes are generated in a ROM to produce a multi-bit feature code characterizing unique relationships between character segments. For each row and column scanned, a representative feature code is produced with a sequence of such codes representing a complete scan of the array. The features codes are received by a decision network as they are generated by the ROM. The decision network is provided with a multiplicity of nodes, each node being accessible to every other node by a one state change to produce a representative output character code. The multiple character codes which are produced during the movement of a single character across the sensor array are processed by a decision circuit which generates a final character recognition signal. A character presence processor searches for a vertical path between character segments to indicate the presence of a character by locating the beginnings and endings of characters. For certain unique characters having vertical gaps between portions of the character a means is provided within the character presence unit to indicate that the vertical gap is to be ignored and that a character code is not to be transferred to the decision circuit.
REFERENCES:
patent: 3219974 (1965-11-01), Rabinow
patent: 3526876 (1970-09-01), Baumgartner et al.
patent: 3694807 (1972-09-01), Bond et al.
patent: 3932840 (1976-01-01), Hanchett
patent: 4045773 (1977-08-01), Kadota et al.
Pillar et al., "Segmentation for Optical Character Recognition" IBM Tech. Disclosure Bulletin, vol. 13, No. 11, Apr., 1971, pp. 3335-3336.
Boudreau Leo H.
Demond Thomas W.
Recognition Equipment Incorporated
Vandigriff John E.
LandOfFree
Character presence processor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Character presence processor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Character presence processor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2161429