Sampling frequency converter
US4990911A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Apr 4, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0102
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A relatively simplified sampling frequency converter for use in a format conversion apparatus is operative to convert sampled input data of an input sampling frequency into sampled output data of an output sampling frequency. The converter has an over-sampling circuit for increasing the sampling frequency of the sampled input data by a predetermined factor or coefficient to provide over-sampled data; an output data extractor for periodically extracting data from the over-sampled data in response to a timing pulse having the output sampling frequency; and a controller for controlling the phase of the timing pulse which controls the phase of the sampled output data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.