Title:
【発明の名称】ス―パ―HD-TVシステムのエンコ―ディング装置及び方式
Document Type and Number:
Japanese Patent JP2509014
Kind Code:
B2
Abstract:
An encoding device for selectively transmitting not only the picture of a 1xNTSC level but also the superhigh resolution pictures of 2xNTSC, 3xNTSC or 4xNTSC levels, by reducing the bandwidth of sub-bands and by using a sub-band coding technique in the case where the bandwidth of channels is restricted. The device includes a 3-dimensional low pass filter 4 for separating the signal output from an A/D converter 3 into 3-dimensional sub-blocks of chrominance signal, and a matrix circuit 5 for separating the signals output from the A/D converter 3 into luminance and chrominance signals. Furthermore, a horizontal, vertical and temporal QMFs 6, 8 and 10 divides the luminance signal into a plurality of horizontal, vertical and temporal sub-blocks in the direction of a horizontal, vertical and temporal axes and compresses the above sub-blocks. A motion detector 15 detects a motion signal corresponding to a still region, a semi-motion region and a motion region. An adaptive filter selector 16 selectively generates the signal of high band luminance sub-block signals output from the temporal QMF 10. A multiplexer 17 multiplexes the sub-block of chrominance signals output from the 3-dimensional low pass filter 4, the low band sub-block signals output from the temporal QMF 10, and the high band sub-block signals output from the adaptive filter selector 16.
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Inventors:
TAEEKUON YAN
Application Number:
JP14766791A
Publication Date:
June 19, 1996
Filing Date:
June 19, 1991
Export Citation:
Assignee:
SANSEI ELECTRONICS CORP
International Classes:
H04N7/015; H04N7/04; H04N7/08; H04N11/00; H04N11/24; H04N19/00; H04N19/117; H04N19/137; H04N19/46; H04N19/62; H04N19/635; H04N19/70; H04N19/80; H04N19/85; (IPC1-7): H04N11/00; H04N7/015; H04N7/24; H04N11/24
Other References:
ＯＰＴＩＣＡＬＥＮＧＩＮＥＥＲＩＮＧ，２７〜７！（１９８８）Ｐ．５７４−５８６
Attorney, Agent or Firm:
Tadahiko Ito (2 outside)