Method and apparatus for a mix signal module
US6505266B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 7, 2000 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Apr 7, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for generating an analog signal and methods of operating the same results in a cost effective solution for an audio sound generator. The apparatus for generating an analog signal comprises an I2C interface configured to provide programming data in response to write control signals, a non-volatile memory coupled to the I2C interface configured to store the programming data, a pulse width modulator coupled to the non-volatile memory configured to receive the programming data from the non-volatile memory and provide a pulse width modulated output in response to the programming data, and a d/a converter coupled to the non-volatile memory configured to receive the programming data from the non-volatile memory and provide an analog output in response to the programming data. The pulse width modulated output can be coupled to a piezoelectric speaker to produce audible sound. The analog output provides a line out signal that can be coupled to a dynamic speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.