Memory cartridge-connectable electronic device such as electronic still video camera
US5091787A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1989 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Dec 7, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S358/906
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a combination of an electronic device and a memory cartridge loaded in the device, a direct check is performed to determine if the device and memory cartridge are properly coupled. To this end, the electronic device writes a predetermined code in a predetermined area of a memory within the memory cartridge and subsequently reads the code out of the memory. Whether or not the coupling between the device and cartridge is normal is judged by comparing the written code and the read code. Alternatively the memory cartridge is provided with checking code generating means. A checking code generated by the generating means when the memory cartridge is loaded in the electronic device is checked on the electronic device side to judge whether the coupling is normal. An example of the electronic device is an electronic still video camera in which photography is enabled only when it is judged that the coupling between the camera and the memory cartridge is normal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.