Printed circuit board
US8612034B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2010 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Apr 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/09972
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A printed circuit board includes a first signal layer, a first ground layer, a second signal layer, a power layer, a second ground layer, and a third signal layer. The first signal layer includes an analog audio input/output (I/O) port and an audio chip. The audio chip includes a main body, a first group of signal pins connected to the analog audio I/O port, and a second group of signal pins connected to a control chip. The first ground layer, the power layer, and the second ground layer are each divided into an audio part and a digital part. The three audio parts act as a reference plane for traces between the analog audio I/O port and the audio chip, the three digital parts act as reference planes for traces between the control chip and the audio chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.