Audio clock regenerator with precise parameter transformer
US8441575B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2007 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Mar 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/7755
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
It is difficult to implement a conventional phase lock loop circuit in a sink device within an HDMI system because the low frequency input causes the conventional phase lock loop circuit to absorb unnecessary noise during a long waiting period. Therefore, the present invention provides a low jitter clock regenerator comprises: an input clock; a divider to divide said input clock into a slower clock; a phase lock loop circuit to regenerate said slower clock to a reference clock; and a parameter transformer to tune said divider and said phase lock loop circuit to increase the adjustment speed of said phase lock loop circuit. The present invention also provides a method to reorganize parameters in order to create new parameters which are better suitable for a clock recovery circuit in a sink device within an HDMI system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.