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:
Jun. 16, 2026
Filed:
Feb. 12, 2025
Samsung Display Co., Ltd., Yongin-Si, KR;
Jungeon An, Yongin-si, KR;
Kihyun Pyun, Yongin-si, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
A security device includes a summing circuit configured to receive a key signal and generate a merged signal by summing a lock signal and the key signal, a check voltage generating circuit configured to generate a check voltage having a voltage level corresponding to a duration of an on-period of the merged signal, and a check circuit configured to check whether the merged signal exceeds a comparison voltage, to check whether the check voltage is within a normal check voltage range, and to generate an OK signal having an on-level if the merged signal does not exceed the comparison voltage and the check voltage is within the normal check voltage range.