Systems and methods for power conservation in an audio bus
US10359827B1 · kind B1 · utility
4Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2018 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Aug 15, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A number of ones in the difference between a current pulse code modulated (PCM) audio sample and an immediately preceding audio sample is compared to a number of ones in the current audio sample to determine which has the fewer number of ones. The audio source sends either the difference or the current audio sample, whichever has fewer ones. By reducing the number of ones sent over a non-return to zero inverted (NRZI) audio bus from an audio source to an audio sink, the number of transitions is reduced, which reduces the power consumed relative to a transmission that does not use this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.