External display device of refrigerator and method for controlling the same
US6927750B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2400/40
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An external display device of a refrigerator which includes a microprocessor enabling a serial data transmission/reception between the external display device and a control unit included in the refrigerator. The microprocessor is coupled with a second microprocessor included in the control unit by two voltage supply lines and a minimum number of data transmission lines. Data transmission/reception between the two microprocessor is carried out in an asynchronous serial manner while using an appropriate data format so that each microprocessor recognizes the operation condition of the counter microprocessor. Accordingly, it is possible to simplify the configuration of signal lines required between the external display device and control unit, irrespective of the complexity of functions required. By virtue of the simplified signal line configuration, it is possible not only to reduce costs, but also to reduce the amount of work required in the passing of signal lines through a hinge hole to couple the external display device to the control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.