EP0721286A2 — Video signal decoding apparatus with artifact reduction
Assigned to Panasonic Holdings Corp · Expires 1996-07-10 · 30y expired
What this patent protects
A video signal decoding apparatus (Dv) according to the present invention includes a decoding unit (141) for applying a variable length and run-length decoding to the compressed video signal (Sc) to reconstruct blocks of quantized coefficients. An inverse quantizer (143) is provi…
USPTO Abstract
A video signal decoding apparatus (Dv) according to the present invention includes a decoding unit (141) for applying a variable length and run-length decoding to the compressed video signal (Sc) to reconstruct blocks of quantized coefficients. An inverse quantizer (143) is provided for inverse quantizing blocks of reconstructed quantized coefficients. An inverse DCT (145) transforms the inverse quantized blocks of reconstructed quantized coefficients to produce a decoded block. An edge block detector (153,149 and 158) determines whether said decoded block is classified as an edge block or not. An adaptive edge enhancement filter (162) removes the distortion in the decoded block when the edge block detector (153) determines as an edge block. Additionally, a ringing noise filter is disclosed for the same decoding apparatus.
Drugs covered by this patent
- Lynparza (olaparib) · AstraZeneca
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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