Invention Grant
- Patent Title: Display backlighting systems and methods for adaptive pulse width modulation and modulo pulse width modulation
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Application No.: US16836617Application Date: 2020-03-31
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Publication No.: US11145260B2Publication Date: 2021-10-12
- Inventor: Vehbi Calayir , James E. Brown , Venkataraman V. Iyer , Bret Rothenberg
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Aikin & Gallant, LLP
- Main IPC: G09G3/36
- IPC: G09G3/36 ; G09G3/34

Abstract:
Aspects of the subject technology relate to an electronic device with a display. The display includes an array of light-emitting diodes. The array includes a plurality of subarrays of the light-emitting diodes. At least one driver circuit is coupled to the array of light-emitting diodes. The at least one driver circuit is configured to generate an adaptive pulse-width modulated (PWM) signal to control at least one subarray of the plurality of subarrays of the light-emitting diodes. The adaptive PWM signal is designed with each pulse of a group having a pulse width W, each pulse width being reduced until reaching a threshold pulse width, and one pulse being removed from the group of pulses.
Public/Granted literature
Information query
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