Electronic volume circuit
US6448856B2 · kind B2 · utility
8Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2001 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jan 31, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/001
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An electronic volume circuit is provided, which can be driven by a single power source and can therefore be formed by an LSI that can be fabricated in a simple manner using an oxide film and a junction process for a single power source. A first amplifying circuit attenuates the amplitude of a bipolar input signal and converts the attenuated input signal to a unipolar signal, and a variable resistor device controls the degree of attenuation of the first amplifying circuit based on an externally supplied signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.