专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5323188A DPCM predictive encoder 失效
标题翻译： DPCM预测编码器
公开(公告)号：US5323188A
公开(公告)日：1994-06-21
申请号：US946640
申请日：1992-09-18
申请人： Noboru Kawayachi , Toru Shibuya
发明人： Noboru Kawayachi , Toru Shibuya
IPC分类号： H03M7/50 , G06T9/00 , H04N7/32 , H04N7/36 , H04N7/137
CPC分类号： H04N19/503
摘要： In a DPCM predictive encoder (or performing DPCM prediction by digitizing a NTSC color television signal with a rate three times of a color sub-carrier frequency, a two-frame predictor which outputs a differential signal over two frames is employed as one of predictors. A predictor switcher adaptively selects one of prediction information as an optimal prediction signal and selects corresponding differential information as an optimal differential signal. This differential signal is quantized by a quantizer. The quantized output and the optimal prediction signal are summed by an adder and supplied to the predictors as a local decoding signal.
摘要翻译：在DPCM预测编码器中（或者通过以三倍于彩色副载波频率的速率数字化NTSC彩色电视信号来执行DPCM预测），将采用两帧输出差分信号的两帧预测器作为预测器之一。预测器切换器将预测信息中的一个自适应地选择为最佳预测信号，并选择相应的差分信息作为最佳差分信号，该差分信号由量化器量化，量化输出和最佳预测信号由加法器相加并提供给预测器作为本地解码信号。

2. 发明授权

US5345269A Adaptive prediction encoding device which can effectively refresh an encoded signal with an encoding efficiency kept high 失效
标题翻译：自适应预测编码装置，其可以有效地刷新编码效率保持较高的编码信号
公开(公告)号：US5345269A
公开(公告)日：1994-09-06
申请号：US123064
申请日：1993-09-17
申请人： Noboru Kawayachi , Toru Shibuya
发明人： Noboru Kawayachi , Toru Shibuya
IPC分类号： G06T9/00 , H04N7/36 , H04N7/13
CPC分类号： H04N19/503
摘要： In an adaptive prediction encoding device which carries out adaptive encoding of a digital picture signal by making a selector adaptively select a two-previous predictor, a previous field predictor, and a higher order intraline predictor in accordance with the digital picture signal, a first selection forcing circuit forces a selector to select the higher order intraline predictor at first timing of fixed scanning lines which periodically appear at a period of (2N+1) scanning lines in each field of successive frames of the digital picture signal, where N represents a natural number. A second selection forcing circuit forces the selector to select the higher order intraline predictor at second timing of additional scanning lines which precede the fixed scanning lines by (m-1) scanning lines in each field of an m-th frame of the digital picture signal, where m consecutively varies from 2 to (2N+1) which is equal to M.
摘要翻译：在通过使选择器根据数字图像信号自适应地选择两个前一个预测器，一个前一个场预测器和一个较高阶的内联预测器来进行数字图像信号的自适应编码的自适应预测编码装置中，第一选择强制电路迫使选择器在数字图像信号的连续帧的每个场中的（2N + 1）个扫描线周期性地出现的固定扫描线的第一定时选择较高阶的内联预测器，其中N表示自然数。第二选择强制电路迫使选择器在数字图像信号的第m帧的每个场中的（m-1）条扫描线之前的固定扫描线之前的另外扫描线的第二定时处选择较高阶的内联预测器，其中m从等于M的2到（2N + 1）连续变化。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式