Bar code display apparatus

• US 5,939,699 A
• Filed: 05/28/1997
• Issued: 08/17/1999
• Est. Priority Date: 05/28/1997
• Status: Expired due to Fees

• Current Assignee: Adventure Gallery Software Limited Liability Company
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Maracas, George N., Reber, William L., Perttunen, Cary D.
• Primary Examiner(s): Hajec, Donald
• Assistant Examiner(s): Lee, Diane I.
• Application Number:
  US08/864,135
• Time in Patent Office: 811 Days
• Field of Search: 235/462.01, 235/378, 235/383, 235/385, 235/466, 235/492, 235/487, 345/123, 345/56
• US Class Current: 235/462.01
• CPC Class Codes: G06K 1/121 by printing code marks applying code marks to labels B65C9/46; marking or coding completed packages B65B61/26
• CPC Class Codes: G06K 19/06028 using bar codes
• CPC Class Codes: G06K 7/1095 the scanner comprising adaptations for scanning a record carrier that is displayed on a display-screen or the like
• CPC Class Codes: H04L 63/0492 by using a location-limited connection, e.g. near-field communication or limited proximity of entities
• CPC Class Codes: H04L 63/068 using time-dependent keys, e.g. periodically changing keys cryptographic mechanisms or cryptographic arrangements for controlling usage of secret information H04L9/088

Abstract

A bar code display apparatus includes a time-varying nonpredictable code generator (12) and a display device (14) responsive to the time-varying nonpredictable code generator (12) to display a time-varying nonpredictable bar code. The display device can provide a scrolling display by displaying a subsequent bar code portion having a bar removed from an end of the bar code. Alternatively, the display device can display a pulsed signal corresponding to the bar code. A housing, having an inset portion at which the display device is accessible, can support the time-varying nonpredictable code generator and the display device.

Claims

1. An apparatus comprising:

a time-varying nonpredictable code generator;

a scrolling display device responsive to the time-varying nonpredictable code generator to display a time-varying nonpredictable bar code wherein the bar code scrolling display displays a first bar code at a first time and a second bar code at a second time, the second bar code having a bar removed from an end of the first bar code;

a housing to support the time-varying nonpredictable code generator, the housing having an inset portion at which the display device is accessible.

2. The apparatus of claim 1 wherein the time-varying nonpredictable code generator is synchronized to a second code generator.

3. The apparatus of claim 1 wherein the bar code scrolling display includes a liquid crystal display.

4. The apparatus of claim 1 wherein the pulsed signal corresponds to a bar code selected from the group consisting of a 3 of 9 bar code, a UPC bar code, a Code 128 bar code, a Codabar bar code, an MSI bar code, an Extended 3 of 9 bar code, a Code 93 bar code, an Extended Code 93 bar code, an Industrial 2 of 5 bar code, a Standard 2 of 5 bar code, a Code 11 bar code, a UCC bar code, and an EAN/JAN bar code.

5. The apparatus of claim 1 wherein the pulsed signal includes a pulse-width modulated signal.

6. The apparatus of claim 1 wherein the bar code scrolling display displays the second bar code to have at least one bar of the first bar code shifted in a direction.