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:
Jul. 22, 2014
Filed:
Oct. 20, 2011
Qi-long Yu, Shenzhen, CN;
Tsung-jen Chuang, New Taipei, TW;
Jun Zhang, Guangdong, CN;
Jun-wei Zhang, Guangdong, CN;
Shih-fang Wong, New Taipei, TW;
Jian-jun Zhou, Shenzhen, CN;
Qi-Long Yu, Shenzhen, CN;
Tsung-Jen Chuang, New Taipei, TW;
Jun Zhang, Guangdong, CN;
Jun-Wei Zhang, Guangdong, CN;
Shih-Fang Wong, New Taipei, TW;
Jian-Jun Zhou, Shenzhen, CN;
Fu Tai Hua Industry (Shenzhen) Co., Ltd., Shenzhen, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
A resistance-measuring circuit includes a controller for outputting a PWM signal and further for adjusting the duty cycle of the PWM signal, and a sampling circuit for processing the PWM signal and transmitting the processed PWM signal to the sensor. The sampling circuit samples the signal outputted from the sensor to generate a sampled signal with the voltage thereof changing according to any change in the duty cycle of the PWM signal, and further transmits the sampled signal to the controller. The controller obtains the real-time duty cycle of the PWM signal when the voltage of the sampled signal reaches a threshold voltage, and further calculates the exact resistance of the sensor according to the obtained real-time duty cycle of the PWM signal and the threshold voltage. An electronic device with the resistance-measuring circuit is also provided.