Sound volume controllable communication apparatus
US6445802B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1998 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | May 26, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R5/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sound volume-controllable communication apparatus capable of outputting signals as monitoring sounds simultaneously with the transmission and reception of the signals is disclosed. At the time of transmission of a signal from, for example, a facsimile machine, a sound volume control unit performs control such that the volume of a sound output from a sound outputting unit is set to a volume lower than the volume normally set. More specifically, when a number key or an automatic dial key is operated, the facsimile machine stores into a memory the present volume of monitoring sounds from a speaker, and then sets the speaker volume to zero, thereby establishing a state where no sound will be produced from the speaker. If the key operated is a number key, the facsimile machine continually transmits a selection signal until the operation on the number key ends. The facsimile machine then sets the speaker volume back to the value stored in the memory, thereby establishing a state where sounds will be produced from the speaker. If the key operated is an automatic dial key, the facsimile machine reads, one digit at a time, the corresponding number from the memory, and sequentially transmi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.