Document character recognition system for identifying magnetic ink characters on bank checks and the like

• US 4,315,246 A
• Filed: 07/11/1979
• Issued: 02/09/1982
• Est. Priority Date: 07/11/1979
• Status: Expired due to Term

• Current Assignee: Control Data Corporation (Ceridian HCM Holding, Inc.)
• Original Assignee: Magnetic Pheripherals, Inc.
• Inventors: Milford, Richard E.
• Primary Examiner(s): Boudreau, Leo H.
• Application Number:
  US06/056,720
• Time in Patent Office: 944 Days
• Field of Search: 340/146.3 C, 340/146.3 D, 340/146.3 R, 340/146.3 Z, 235/449, 235/440, 235/454, 235/462
• US Class Current: 382/140
• CPC Class Codes: G06V 10/98 Detection or correction of errors, e.g. by rescanning the pattern or by human intervention; Evaluation of the quality of the acquired patterns

Abstract

A character recognition system for selectively reading and identifying a plurality of characters printed in magnetic ink on a first document and a second document. The documents being bank checks and the like. The system used with reader/sorter equipment for delivering data to an on-line computer. The system characterized by the ability to store all of the character codes of the magnetic ink characters on the documents, compare the character codes and logically edit the codes. The result of the system provides the reader/sorter equipment with a superior performance due to fewer rejects and misread characters.

Claims

1. A character recognition system for selectively reading and identifying a plurality of characters printed in magnetic ink on documents, the documents being bank checks and the like, the documents transported on a document transport mechanism, the system comprising:

a magnetic ink character recognition, i.e. MICR read head and recognition circuit disposed adjacent the document transport mechanism for reading the magnetic ink characters on the document and providing a character recognition code for each character read;

an optical character recognition, i.e. OCR read head and recognition circuit disposed adjacent the document transport mechanism and positioned at a fixed distance downstream from the MICR read head, the OCR read head and circuit optically reading the magnetic ink characters on the document and providing a character recognition code for each character read;

a memory having write and read access control with document and buffer area control connected to the MICR and OCR circuitry, the memory having the capacity to store all of the OCR and MICR character recognition codes for a single document; and

edit logic connected to the memory for comparing corresponding character codes from the memory and putting out a final character code or skipping and repeating character codes to achieve a character correspondence.

2. The system as described in claim 1 wherein the memory includes a first and second MICR buffer connected to the MICR circuit and a first and second OCR buffer connected to the OCR circuit, the four buffers of the memory each having the capacity to store the character codes representing the characters to be used for a single document.

3. The system as described in claim 1 further including a document presence sensor disposed adjacent the document transport system for sensing the documents being transported thereby and a document presence control connected to and activated by the document presence sensor when the documents are sensed.

4. The system as described in claim 1 further including a register connected to the memory and the edit logic, the register having a first section for receiving the OCR character codes from the memory and a second section for receiving the MICR character codes from the memory, the edit logic connected to the register for comparing corresponding character codes from the first section and the second section of the register and putting out a final character code.

5. A character recognition system for selectively reading and identifying a plurality of characters printed in magnetic ink on documents, the documents being bank checks and the like, the documents transported on a document transport mechanism, the system comprising:

a document presence sensor disposed adjacent the document transport mechanism for sensing the document being transported thereby;

a document presence control connected to and activated by the document presence sensor when the documents are sensed;

a magnetic ink character recognition, i.e. MICR read head and recognition circuit disposed adjacent the document transport mechanism for reading the magnetic ink characters on the document and providing a character code for each character read, the MICR read head and circuit enabled by the document presence control when the documents are sensed;

an optical character recognition, i.e. OCR read head and recognition circuit disposed adjacent the document transport mechanism and positioned at a fixed distance downstream from the MICR read head, the OCR read head and circuit optically reading the magnetic ink characters on the document and providing a character recognition code for each character read, the OCR read head and circuit enabled by the document presence control when the documents are sensed;

a memory having write and read access with document and buffer area control connected to the MICR and OCR circuitry, the memory having the capacity to store all of the MICR and OCR character recognition codes for a single document;

a register connected to the memory, the register having a first section for receiving the OCR character codes from the memory, and a second section for receiving the MICR character codes from the memory; and

edit logic connected to the register for comparing corresponding character codes from the first section and the second section of the register and putting out a final character code and connected to the memory for skipping and repeating character codes to achieve character correspondence.

6. The system as described in claim 5 wherein the memory includes a first and second MICR buffer connected to the MICR circuit and a first and second OCR buffer connected to the OCR circuit, the four buffers of the memory each having the capacity to store the character codes representing the characters to be used for a single document.