公开(公告)号：US06519288B1

公开(公告)日：2003-02-11

申请号：US09035969

申请日：1998-03-06

申请人： Anthony Vetro ,  Huifang Sun ,  Tommy Poon

发明人： Anthony Vetro ,  Huifang Sun ,  Tommy Poon

IPC分类号： H04N0718

CPC分类号： H04N19/59

摘要： The apparatus for decoding a digital signal includes a composite picture forming unit for forming a composite picture from a first digital video signal and a second digital video signal. The first digital video signal includes inter-coded picture data. A down-converter receives a third digital video signal, and outputs the third digital video signal to the composite picture forming unit as the first digital signal in a first mode. However, the down-converter down-converts the third digital video signal into a fourth digital video signal in a second mode, and outputs the fourth digital video signal to the composite picture forming unit in the second mode. A memory stores the anchor pictures output from the composite picture forming unit, and a motion compensator generates the second digital signal based on the stored anchor pictures.

摘要翻译： 用于对数字信号进行解码的装置包括用于从第一数字视频信号和第二数字视频信号形成合成图像的合成图像形成单元。 第一数字视频信号包括帧间编码图像数据。 下变频器接收第三数字视频信号，并以第一模式将第三数字视频信号作为第一数字信号输出到合成图像形成单元。 然而，下变频器在第二模式中将第三数字视频信号下变频为第四数字视频信号，并在第二模式中将第四数字视频信号输出到复合图像形成单元。 存储器存储从复合图像形成单元输出的锚图像，并且运动补偿器基于存储的锚图像生成第二数字信号。