The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 1995
Filed:
Sep. 19, 1994
Applicant:
Inventors:
Takehiko Kumagai, Tokyo, JP;
Takashi Kikuchi, Akishima, JP;
Takao Okubo, Akishima, JP;
Yasuyuki Fuse, Koganei, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi VLSI Engineering Corp., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395481 ; 364D / ; 364D / ; 3642328 ; 364244 ; 3642606 ; 395164 ; 341 50 ;
Abstract
Compressor/expander circuits which are built in a common semiconductor substrate along with a random access memory unit function so as to realize compression/expansion processes merely through the internal data transfer controls between the circuits and the random access memory unit as based on built-in control unit. This endows the temporary storage of data and the compression/expansion processes hereof with continuities, and achieves higher speeds for the compression/expansion processes.