Muting control device, muting control method, and muting control program
US8155349B2 · kind B2 · utility
2Cited by
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2Claims
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Assignee
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Key dates
| Filing date | Oct 15, 2008 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Jan 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/211
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
When controlling the audio signal to the mute mode from an unmute mode, first, the muting circuit switches from the non-attenuating state to the attenuating state to cause the muting circuit to attenuate the audio signal by the predetermined amount of attenuation, and then, the amount of attenuation by the volume control section is set to the maximum amount of attenuation to cause the volume control section to attenuate the audio signal by the maximum amount of attenuation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.