Moving image signal compression device

Abstract

Abstract PURPOSE:To enable the compression of a normal moving image by a simple means by replacing the digital moving image signal of a next frame at the same place on a frame with the digital moving image signal of a preceding frame, orthogonally transforming the series of the replaced signal in the direction of a time base, and compressing and requantizing. CONSTITUTION:The digital moving image signal is quantized and divided into a block composed of prescribed number of frames. Each moving image is replaced as the digital moving image signal of the next frame at the same place on the frame as the digital moving image signal of the preceding frame is replaced by a replacing means 11 next to the digital moving signal of the previous frame. The series of the replaced signal is orthogonally transformed in the direction of the time base by a transforming means 12, and the orthogonally transformed signal is compressed and requantized by a requantizing means 13. Thus, it is possible to encode the moving image signal by the simple means without using a means for a movement compensation.

Inventors

• 👤 Hiroyuki Katada
• 👤 裕之 堅田
• 👤 Yoji Noguchi
• 👤 要治 野口

Bibliographic Details