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.

Date of Patent:
Feb. 12, 1991

Filed:

Jul. 08, 1988
Applicant:
Inventors:

Toshiyuki Tamura, Itami, JP;

Shinji Komori, Itami, JP;

Hidehiro Takata, Itami, JP;

Tetsuo Yamasaki, Amagasaki, JP;

Hiroaki Terada, Suita, JP;

Katsuhiko Asada, Amagasaki, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364900 ; 3649265 ; 364935 ; 3649352 ; 3649501 ; 364960 ; 36494834 ; 365 78 ; 377 64 ;
Abstract

A data transmission apparatus which is connected with a shift register of a plural stages forming a forward path of data transmission line, and a shift register of a plural stages forming a backward path of the same, and a loop-back part therebetween, and comprises bypasses between the shift register on the forward path and on the backward path to bypass the transmitted data when significant data does not exist on the loop-back part side from a stage on which the bypass is comprised and no data stays at a stage where the bypass is comprised, so that data is transmitted at high speed, and which is constructed to be able to control the bypass from external, so that testing of circuitry is easy.


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