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:
Oct. 07, 2008
Filed:
Jun. 02, 2006
Martin Yeung-kei Chui, Hong Kong, HK;
Martin Yeung-Kei Chui, Hong Kong, HK;
Smartech Worldwide Limited, Hong Kong, CN;
Abstract
An oscillator circuit includes a current source comprising an amplifier, a first resistor, a second resistor, and a third inverter whose input and output are connected and coupled with an input of the amplifier. The amplifier is configured to generate a first current flowing through the first resistor and the second resistor. The oscillator circuit also includes a vibrator circuit comprising a first capacitor and a second capacitor, wherein the first capacitor is configured to charge in response to the first current and discharge when the voltage across the first capacitor reaches a first threshold voltage of a first inverter and the second capacitor is configured to charge in response to the first current and discharge when the voltage across the first capacitor reaches a second threshold voltage of a second inverter and a latch circuit comprising the first inverter and the second inverter, wherein the latch circuit is configured to produce an oscillating signal in response to the charging and the discharging of the first capacitor and the second capacitor in the vibrator circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile