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. 11, 2022
Filed:
Mar. 27, 2018
Omnivision Technologies, Inc., Santa Clara, CA (US);
Eric A. G. Webster, Mountain View, CA (US);
Olivier Bulteel, Oslo, NO;
OMNIVISION TECHNOLOGIES, INC., Santa Clara, CA (US);
Abstract
A photomultiplier pixel cell includes a photon detector coupled to detect an incident photon. A quenching circuit is coupled to quench an avalanche current in the photon detector. An enable circuit is coupled to the photon detector to enable and disable the photon detector in response to an enable signal. A buffer circuit is coupled to the photon detector to generate a digital output signal having a pulse width interval in response to the avalanche current triggered in the photon detector. A first one of a plurality of inputs of a digital-to-analog converter is coupled to the buffer circuit to receive a digital output signal. The digital-to-analog converter is coupled to generate an analog output signal having a magnitude that is responsive to a total number of digital output signals received concurrently within the pulse width interval at each one of the plurality of inputs of the digital-to-analog converter.