Method, notably for optimizing the compression of a video and/or audio file, using a codec assigning a weight in bits per second to the corresponding compressed file, and associated system
US9025677B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Sep 25, 2012 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Nov 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/117
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for compressing a stream by means of a codec (C), provided for assigning to a compressed stream an encoding throughput (Q) measured in bits per second, using a pre-filter (X1) replacing in the header (T1) of the original stream, the restoration frequency (R) with a frequency equal to the product (R×K) of the restoration frequency (R) by a coefficient (K) and then for retransmitting the thereby filtered stream (FX1) to the codec; the post-filter (X2) replacing the restoration frequency (R) into the header (TX2) of a stream (FX2) resulting from the encoding of the pre-filtered stream (FX1) by the codec C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.