Bar cord information input confirming method

• US 4,742,521 A
• Filed: 09/04/1987
• Issued: 05/03/1988
• Est. Priority Date: 07/12/1984
• Status: Expired due to Term

• Current Assignee: Tokyo Electric Co., Ltd. (Toshiba Corporation)
• Original Assignee: Tokyo Electric Co., Ltd. (Toshiba Corporation)
• Inventors: Nishida, Manabu
• Primary Examiner(s): Atkinson, Charles E.
• Application Number:
  US07/094,094
• Time in Patent Office: 242 Days
• Field of Search: 371/53, 371/54, 235/431, 235/462, 235/470, 235/437, 382/57
• US Class Current: 714/808
• CPC Class Codes: G06K 5/02 the verifying forming a part of the marking action

Abstract

A method and apparatus for confirming bar code information in a bar code printer. The information to be printed includes informational digits and two check digits. The first check digit is manually inputted by the operator along with the informational digits. The second check digit is automatically calculated and should have the same value as the first check digit. The data is further confirmed by comparing the first check digit with a calculated value obtained by performing an automatic calculation based on the informational digits.

Claims

1. The method of confirming bar code information which is input to a bar code printer where the bar code information is in accordance with a bar code version, comprising the step of:

manually inputting said bar code information including a plurality of digits and a first check digit;

automatically calculating a value based on said plurality of digits;

comparing said first check digit and said value to determine if they are equal and to confirm that errors are not present in said bar code information;

automatically calculating a second check digit based on said bar code information, if said first check digit is equal to said value, wherein said second check digit is a check digit for checking whether the bar code as read is correct;

storing said first check digit, said second check digit and said value in a RAM having a first check digit area, a second check digit area and a value area; and

printing a label containing said bar code information and said second check digit.

2. A device for confirming bar code information input to a bar code printer where said bar code information is in accordance with a bar code version, said device comprising:

means for inputting said bar code information including a plurality of digits and a first check digit;

means for automatically calculating a value based on said plurality of digits;

means for comparing said first check digit and said value to determine whether said first check digit is equal to said value and to confirm that errors are not present in said bar code information;

means for automatically calculating a second check digit based on said bar code information if said first check digit is equal to said value, wherein said second check digit is a check digit for checking whether the bar code as read is correct;

a RAM having a first check digit area for storing said first check digit, a second check digit area for storing said second check digit and a value area for storing said value;

means for printing a label containing said bar code information and said second check digit.