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:
Mar. 05, 2024
Filed:
Jul. 13, 2021
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Yuming Liu, Mountain View, CA (US);
Chao Hu, San Ramon, CA (US);
Joaquin Andres Fierro, Los Gatos, CA (US);
Nathan Slattengren, San Francisco, CA (US);
David Viviescas, Mountain View, CA (US);
Stella Chung, Fremont, CA (US);
Tajbid Rahman, Ozone Park, NY (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
The disclosed devices may include a driver circuit including a voltage boost circuit, a pulse modulation controller, and optionally a headroom processor. The voltage boost circuit may be configured to receive a device input voltage (such as a battery voltage) and generate a backlight drive voltage. The pulse modulation controller may be configured to provide a pulse modulation signal to the voltage boost circuit, and may include a digital circuit or an analog circuit. Example devices may include a backlight unit receiving the backlight voltage. The optional headroom processor may provide a headroom signal to the pulse modulation controller based on a headroom voltage determined from the backlight unit. Devices may further include a backlight unit including an arrangement of light-emissive elements, and may include display devices such as head-mounted devices. Various other methods, systems, and computer-readable media are also disclosed.