Terminal device having closed chamber communications between functional units
US4499608A · kind A · utility
17Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1983 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Jan 12, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/801
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A data processing terminal device includes a substantially enclosed optical chamber which serves as a wireless communication "bus" between pluggable functional units such as a controller unit, printer units, display units, etc. Each functional unit includes a transducer having an emitter component for injecting optical energy into the cavity and a detector component for sensing optical energy injected by transducers of other functional units. The energy distribution within the cavity is shaped by elliptic parabolic reflectors, preferably molded integrally with the floor of the chamber structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.