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:
Aug. 14, 2018
Filed:
Dec. 12, 2016
Omnivision Technologies, Inc., Santa Clara, CA (US);
Fan Zhu, San Jose, CA (US);
Yu-Shen Yang, San Jose, CA (US);
Yingkan Lin, San Jose, CA (US);
Zejian Wang, Sunnyvale, CA (US);
Liping Deng, Cupertino, CA (US);
OmniVision Technologies, Inc., Santa Clara, CA (US);
Abstract
An example method for fast ramp start-up during analog to digital conversion (ADC) includes opening a feedback bypass switch coupled to an amplifier to initiate an ADC operation, providing an injection current pulse to an inverting input of the amplifier, where the non-inverting input is coupled to a feedback bypass switch, integrating a first reference current coupled to the inverting input of the amplifier, where the integrating of the first reference current occurs due to the opening of the feedback bypass switch, and providing a reference voltage in response to the injection current pulse, the integrating of the first reference current, and a reference voltage coupled to a non-inverting input of the amplifier, where a level of the reference voltage is increased at least at initiation of the ADC operation in response to the injection current pulse.