05309527 is referenced by 58 patents and cites 13 patents.

An image data processing apparatus selects and extracts the elements of a desired 8.times.8 matrix from four matrices in real space each having 8 rows and 8 columns and effects an inverse discrete cosine transform on the four matrices. The elements of the four matrices each of the 8 rows and 8 columns are arranged into four vectors each of 64 elements. The elements of the vectors are supplied serially to four 64-output serial-to-parallel converters, which output the elements in parallel. Data selectors then select the 64 elements of one of the vectors. Half of the selected elements are processed by a 32-element inner product processing circuit, which produces a first inner product output signal. The remaining selected elements are processed by another 32-element inner product processing circuit, which produces a second inner product output signal. The first and second inner product output signals are added into a final output signal by an adder.

Title
Image data processing apparatus
Application Number
7/820779
Publication Number
5309527
Application Date
January 15, 1992
Publication Date
May 3, 1994
Inventor
Mitsuharu Ohki
Tokyo
JP
Agent
Ronald P Kananen
Assignee
Sony Corporation
JP
IPC
H04N 7/12
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