Automatic vending machine with a plurality of modules and serial bus system
US8190800B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2008 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Mar 29, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F9/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a configuration where a main control unit and various peripheral modules are bus-connected on a communication line, the communication line includes a control line in addition to signal lines serving as a differential pair. The control line is, for example, a bus of the logical AND. When the main control unit drives the control line to a ‘L’ level for a certain period of time or more, the peripheral modules detect that and carry out a hardware reset for itself. When the main control unit issues a command to output a value of a particular bit of own identification number to the peripheral modules via the signal lines, the peripheral modules output the result to the control line, and the control line performs an AND operation. By utilizing the AND operation result, automatic address allocation to the peripheral modules is carried out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.