US 2007/0165716 A1 · Signal processing device, image capturing device, network camera system and video system

Abstract

A reference image memory comprises seven reference bank memories each having a capacity which can store three reference macroblocks in the vertical direction. Of the seven reference bank memories, any three reference bank memories are adaptively allocated to motion estimation of full pixel precision, any other three reference bank memories are adaptively allocated to motion estimation of half pixel precision, and remaining one reference bank memory is adaptively allocated to spare transfer for image data of a reference macroblock used in motion estimation with respect to the next target macroblock. The reference bank memories are connected to a motion estimating circuit via a total of seven respective buses separately. The motion estimating circuit performs the motion estimation of full pixel precision, the motion estimation of half pixel precision, and the spare transfer for image data of a reference macroblock used in motion estimation with respect to the next target macroblock, in parallel.

Claims38

Dependent claims

A signal processing device for estimating a motion of a target macroblock image included in a target frame image by referencing a plurality of reference macroblock images included in a reference frame image, comprising:

a target image storing section for storing the target macroblock image included in the target frame image;
a reference image storing section for storing a plurality of reference macroblock images located in a first direction which is a direction in which the target macroblock image is processed and in a second direction perpendicular to the first direction around a reference macroblock image corresponding to the target macroblock image of the plurality of reference macroblock images included in the reference frame image, and having a plurality of reference bank sections which are physically separately divided areas each including a predetermined number of reference macroblock images located in the second direction;
and
a motion estimating section for performing motion estimation with respect to the target macroblock image in the target image storing section by referencing the plurality of reference macroblocks stored in the plurality of reference bank sections of the reference image storing section.

1 more element

Dependencies are inferred from the claim text.

Signal processing device, image capturing device, network camera system and video system

Life of this patent

Signal processing device, image capturing device, network camera system and video system

Life of this patent

Abstract

Claims38