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:
Dec. 01, 2015
Filed:
Aug. 15, 2014
Himax Analogic, Inc., Tainan, TW;
Chow-Peng Lee, Tainan, TW;
HIMAX ANALOGIC, INC., Tainan, TW;
Abstract
A test mode activation circuit that includes a clock signal generating module, a resistor-capacitor circuit, a current generating module, an output capacitor and a comparator is provided. The clock signal generating module generates a clock signal to an input node such that the resistor-capacitor circuit electrically connected to the input node receives the clock signal to generate a triggering signal every predetermined time interval. The current generating module generates a charging current to an output node in response to the triggering signal. The output capacitor receives the charging current from the output node such that an output voltage of the output node gradually increases. The comparator receives the output voltage from the output node and a reference voltage, wherein the comparator compares the output voltage and the reference voltage to generate a test mode activation signal when the output voltage is larger than the reference voltage.