VIDEO SIGNAL PROCESSOR, VIDEO DISPLAY SYSTEM, AND VIDEO SIGNAL PROCESSING METHOD

To restrain increase in transmission amount and calculation amount of video, while restraining degradation of display video, on the basis of human visual properties specific to high frame rate display video, when transmitting a video having a relatively high frame rate.SOLUTION: A video signal proce...

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Bibliographic Details
Main Author FUCHIGAMI RYUJI
Format Patent
LanguageEnglish
Japanese
Published 25.04.2019
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Summary:To restrain increase in transmission amount and calculation amount of video, while restraining degradation of display video, on the basis of human visual properties specific to high frame rate display video, when transmitting a video having a relatively high frame rate.SOLUTION: A video signal processor 11 includes a quantizer 21 sequentially outputting input data based on the video data of first gray scale quantized into the video data of second gray scale, a storage section 22 for sequentially storing the quantized data outputted from the quantizer 21, a difference calculator 23 for sequentially calculating the finite difference of the video data of first gray scale related to the current frame and the quantization data related to a previous frame stored in the storage section 22, and an integrator 24 sequentially outputting the integration data, sequentially integrated the data outputted from the difference calculator 23, as the input data to the quantizer 21.SELECTED DRAWING: Figure 3 【課題】比較的高いフレームレートを有する映像を伝送する場合に、高フレームレート表示映像特有の人間の視覚特性に基づいて、表示映像の品質低下を抑制しつつ、映像の伝送量および演算量の増大を抑制することを可能とする。【解決手段】映像信号処理装置11は、第1階調の映像データに基づく入力データを、第2階調の映像データに量子化した量子化データを順次出力する量子化器21と、量子化器21から出力される量子化データを順次記憶する記憶部22と、現フレームに関する第1階調の映像データと記憶部22に記憶された以前のフレームに関する量子化データとの差分を順次算出する差分計算器23と、差分計算器23から出力されるデータを順次積算した積分データを、量子化器21の入力データとして順次出力する積分器24と、を備える。【選択図】図3
Bibliography:Application Number: JP20180020309