Portable computer docking station having improved speaker apparatus therein
US5847922A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1996 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Jul 29, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/1632
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A portable computer docking station has a molded plastic housing within the interior of which are a ported speaker structure operative at low, mid and high frequencies, and a nonported speaker structure operative only at mid-to-high frequencies. The ported speaker structure has a ported enclosure section formed integrally with an exterior wall portion of the housing and having an open side. A first speaker is mounted on a lid member at an opening therein, with the lid member being secured to the ported enclosure section over the open side thereof with a seal member being sandwiched between the lid member and the enclosure section, and a sound absorbing structure being disposed within the enclosure section under the first speaker. The nonported speaker structure includes a second speaker supported on a second wall portion of the housing. A mid-range enclosure, formed from an open cell foam material, engages a section of the second wall portion that circumscribes the second speaker and has a chamber therein that receives the second speaker. The input of the first speaker is connected to the output of a first amplifier having an input in turn connected to a first equalizing circuit. T…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.