http://rdf.ncbi.nlm.nih.gov/pubchem/patent/HU-228603-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3fc6890df1074a35356f43e035472eee |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N19-126 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N19-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N19-124 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06F17-147 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N19-60 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06F17-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03M7-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N19-124 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03M7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N1-41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N19-60 |
| filingDate | 2002-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45607e8f1af35152e780f87583be90e9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73e3f6e18c6607e4e2fc042d37223065 |
| publicationDate | 2013-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | HU-228603-B1 |
| titleOfInvention | Method of zealizing approximation and quantization of discreet cosinus transformation, method of zealizing dequantization and approximation of inverz discreet cosinus transformation; further coder and decoder |
| abstract | The invention relates to an approximation of a DCT and a quantization which are to be applied subsequently to digital data for compression of this digital data. In order to improve the transform, it is proposed to simplify a predetermined transform matrix to require less operations when applied to digital data. In addition, elements of the simplified transform matrix constituting irrational numbers are approximated by rational numbers. These measures are compensated by extending a predetermined quantization to compensate for the approximation of elements of the simplified transform matrix by rational numbers. If the simplified transform matrix and the extended quantization are used as basis for implementation, a fast transform with a good resulting quality can be achieved. An approximation of an IDCT employed in decompression of compressed digital data can be simplified correspondingly. |
| priorityDate | 2001-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.