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:
Jun. 30, 2020

Filed:

Mar. 28, 2019
Applicant:

Realtek Semiconductor Corp., Hsinchu, TW;

Inventors:

Sheng-Ping Yung, Hsinchu, TW;

Pei-Ying Hsueh, Hsinchu, TW;

Chun-Yi Kuo, Hsinchu, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3177 (2006.01); G01R 31/317 (2006.01);
U.S. Cl.
CPC ...
G01R 31/3177 (2013.01); G01R 31/31723 (2013.01); G01R 31/31727 (2013.01);
Abstract

A chip includes one or more function input pads, a sequence generation circuit, one or more logic circuits, one or more scan chains, a selection circuit, and one or more sequence output pads. The function input pad is configured to receive a function sequence. The sequence generation circuit is configured to generate a diagnosis sequence. The logic circuit includes a plurality of logic gates, for responding to the function sequence and outputting one or more logic results. When enabled by the selection circuit, the scan chain outputs a response result in response to the logic result or a diagnosis result in response to the diagnosis sequence. The sequence output pad receives the diagnosis result when the scan chain responds to the diagnosis sequence.


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