Memory card, imaging apparatus, and recording/reproducing apparatus
US8374482B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2007 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Apr 24, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/107
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a memory card attached to an external apparatus for transmitting and receiving data via the external apparatus and an optical communication. The memory card includes a power-supply potential unit receiving electric power supply at a predetermined voltage from the external apparatus; a ground potential unit connected to a ground potential unit of the external apparatus; a light-receiving unit receiving an optical signal transmitted from the external apparatus or another memory card; and a light-emitting unit transmitting the optical signal to the external apparatus or another memory card. In the memory card, the light-receiving unit and the light-emitting unit are arranged such that the signal received by the light-receiving unit and the signal transmitted from the light-emitting unit are transmitted in a straight line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.