Heating appliance with internal non-volatile memory
US4686356A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1986 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Feb 7, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/745
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating appliance has a control system which is arranged such that when an internal electrically rewritable nonvolatile memory is utilized in the heating appliance for cooking foods with heat, the protection of data, an the rewriting of data and the collation of data are carried out positively and with great accuracy. A heating appliance employing such a nonvolatile memory is provided with a protection circuit for preventing the destruction of data stored in the memory when the power source is turned on and off and a main control section is provide for the periodic rewriting of memory data, whereby the data are protected against destruction and aging. Moreover, when reading the data stored in memory the collation of the data is carried out at least twice and when writing in data, the data so written is immediately read out and collated with RAM data in the main control section for improved resistance to noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.