Apparatus and method of using spread pulse modulation to increase the control resolution of an electronic device
US7443328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2007 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Aug 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/07
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus and method are described to increase the control resolution of an electronic device. In one embodiment, the invention includes a spread pulse modulation module to generate a first set of bits based on a second set of bits that is larger than the first set of bits. The spread pulse modulation module modulates the least significant bit (LSB) of the first set of bits based on information including the LSB modulation period and the LSB modulation duty cycle. The spread pulse modulation module also modulates the least significant bit of the first set of bits so that the least significant bit transitions at least twice from a high value to a low value during the modulation period. This embodiment of the invention also includes a digital-to-analog conversion module to generate an analog input signal to the electronic device based on the first set of bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.