Device for generating calling vibrations or calling sounds in cellular or pager phones
US5956622A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Sep 24, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An integrated device for selectively generating calling vibrations or calling sounds in cellular or pager phones is disclosed. In the device, two vibration members are set in the upper and lower portions of a casing, respectively. The two vibration members respectively respond to low and high frequencies applied from the PCB of a phone to the coil of an electromagnet, thus generating calling vibrations and calling sounds. The device thus selectively generates calling vibrations or calling sounds in accordance with a selected mode. The device of this invention has a simple construction with a reduced number of elements, thus simplifying the production process and reducing the production cost of cellular or pager phones. The device also accomplishes the recent trend of compactness, thinness and lightness of such phones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.