Multifocal display device and method
AssigneeHuawei Technologies Co., Ltd.
InventorsAtanas Boev, Panji Setiawan
Life of this patent
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Abstract
The disclosure provides a multifocal display device, comprising a display configured to generate an image, and a controller configured to control the display according to a bit sequence provided over a determined time period to generate the image with one or more colors. The bit sequence includes for each color a subsequence of bits of different significance. Neither the first bit nor the last bit of the subsequence for the respective color is the most significant bit of the subsequence.
Claims13
A multifocal display device, comprising:
- a display configured to generate a pixelated image with one or more colors,
- a storage storing a plurality of bit groups,
- a focus tunable lens, and
- a controller configured to, during a respective time period in a frame period:
- tune a focus of the focus tunable lens to a focal plane and control an illumination intensity of the display in accordance with a bit sequence provided for a pixel over the respective time period,
- wherein the bit sequence includes, for each color of the one or more colors, a respective subsequence of bits of different significance, and wherein, for each respective subsequence, neither the first bit nor the last bit of the respective subsequence is a most significant bit of the respective subsequence,
- wherein the bit sequence comprises a concatenation of the plurality of bit groups in the storage, and
- wherein the controller is further configured to control the display, during a first section of the time period, according to a first bit group and, during a second section of the time period, according to a second bit group.
A method for generating a pixelated multifocal image with one or more colors, wherein, during a time period in a frame period, the method comprises:
- tuning a focus of a lens to a focal plane and controlling an illumination intensity of a display in accordance with a bit sequence provided for a pixel over a time period,
- wherein the bit sequence includes, for each color, a respective subsequence of bits of different significance, wherein for each respective subsequence, neither the first bit nor the last bit is a most significant bit of the respective subsequence,
- wherein the bit sequence comprises a concatenation of a plurality of bit groups stored in a storage, and
- wherein controlling the illumination intensity of the display comprises, during a first section of the time period, controlling the intensity according to a first bit group in the bit sequence and, during a second section of the time period, controlling the intensity according to a second bit group in the bit sequence.
Dependencies are inferred from the claim text.