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:
Apr. 23, 2024
Filed:
Apr. 13, 2022
Omnivision Technologies, Inc., Santa Clara, CA (US);
Hiroaki Ebihara, San Jose, CA (US);
Zhenfu Tian, San Jose, CA (US);
Peter Bartkovjak, San Jose, CA (US);
Satoshi Sakurai, Cupertino, CA (US);
OMNIVISION TECHNOLOGIES, INC., Santa Clara, CA (US);
Abstract
A ramp buffer circuit includes a ramp buffer input device having an input coupled to receive a ramp signal. A current monitor is circuit coupled to a power line and the ramp buffer input device to generate a current monitor signal in response to an input current conducted through the ramp buffer input device. A corner bias circuit is coupled to the current monitor circuit to generate an assist bias voltage in response to the current monitor signal. A bias current source is coupled to an output of the ramp buffer input device. An assist current source is coupled to the corner bias circuit and coupled between the output of the ramp buffer input device and ground to conduct an assist current from the output of the ramp buffer input device to ground in response to the assist bias voltage.