Vending machine audit monitoring system
US5442568A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Nov 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F9/026
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An audit monitoring system (10) is provided for use with any of a multiplicity of different coin operated vending machines (300). The audit monitoring system includes an interface assembly (102) for use in replacing an existing data link (330) within vending machine (300). The interface assembly (102) is coupled to an audit monitoring assembly (100) which interprets the communications signals transferred between a controller (310), coin changer (322) and bill validator (324) of vending machine (300). Audit monitoring assembly (100) is powered from a power supply (302) of vending machine (300) and includes interface circuitry (110,120,130) for receipt of digital logic level signals, serial data or relay logic signals from vending machine (300). Additionally, the data retrieval terminal (20) may be removably coupled to the audit monitoring assembly (100) through either a hard wired coupling (254) through a serial interface (250) or alternately by means of infrared optical signals (12, 22) through an infrared interface circuit ( 260).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.