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:
Jan. 03, 2012
Filed:
Oct. 26, 2009
Meng-chih Weng, Tainan County, TW;
Meng-Chih Weng, Tainan County, TW;
Himax Technologies Limited, Sinshih Township, Tainan County, TW;
Abstract
The invention discloses a PVT-independent current-controlled oscillator, including a PV-controller, a current-controlled oscillator and a T-controller. The current-controlled oscillator is coupled to the PV-controller and outputs an oscillation frequency. The T-controller is coupled to the PV-controller and the current-controlled oscillator, providing a total current to be shared by the PV-controller and the current-controlled oscillator, wherein the PV-controller decreases the shared current of the current-controlled oscillator by increasing the shared current of the PV-controller if the oscillation frequency is higher than a predetermined frequency due to a process variation of the current-controlled oscillator, and increases the shared current of the current-controlled oscillator by decreasing the shared current of the PV-controller if the oscillation frequency is lower than the predetermined frequency due to the process variation of the current-controlled oscillator, thereby dynamically adjusting the oscillation frequency.