Sound mode selector device in a camera incorporating a buzzer
US4348096A · kind A · utility
7Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1980 |
| Grant date | Sep 7, 1982 |
| Priority date | — |
| Expiry date | Nov 5, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In the disclosed device, the character of sound formed by a sound generator is varied by placing the sound generator in a chamber and varying the chamber to produce at least two sound modes indicating at least two data. According to one embodiment, an aperture in the chamber is covered with a shield accessible from the outside of the camera housing. According to another embodiment, the resonant frequency of the sound is varied by varying the shape of the chamber. In a third embodiment, the chamber is covered and uncovered by varying the registry of two series arranged apertures to the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.