Apple Inc.

Jaeyoung Kang

Shingo Hatanaka

John T Wetherell

Hopil Bae

Derek Keith Shaeffer

Baris Cagdaser

Mahdi Farrokh Baroughi

Hasan Akyol

Yaser Azizi

Yuichi Okuda

Nobutaka Shimamura

Circuits, systems, methods, and devices are provided for isolating the first ground domain from the second ground domain while transmitting and receiving data between the two ground domains. The proposed high-voltage ground-isolating level shifter may be formed by AC coupling capacitors and a memory cell. The circuit under the high voltage ground domain may be located in an engineered high-voltage isolation well with a relatively large breakdown voltage.

Ground isolation systems and methods

An electronic device may include an electronic display panel having multiple display pixels for displaying an image based on analog voltage signals. The electronic device may also include interpolation circuitry to generate the analog voltage signals based on digital image data corresponding to the image. The interpolation circuitry may also receive analog reference voltages and interpolate between sets of the analog reference voltages to generate intermediate voltages, which may be a part of the analog voltage signals. Interpolating between the sets analog reference voltages may include performing a first level interpolation of a first set of the analog reference voltages to generate a first intermediate voltage and performing a second level interpolation of a second set of the analog reference voltages to generate a second intermediate voltage, wherein the first level interpolation is different from the second level interpolation.

Enhanced smoothness digital-to-analog converter interpolation systems and methods

A system includes a pixel that emits light based on a signal provided to the pixel. The system may also include a buffer circuit having a differential pair stage, a cascade stage, and an output stage. The differential pair stage may receive a common mode voltage signal via a first switch in response to the first switch receiving a first signal that causes the first switch to close. The differential pair stage may couple a capacitor to the output stage via a second switch that operate based on a second signal, such that the capacitor reduces an offset provided by one or more circuit components in the differential pair stage, the cascade stage, the output stage, or any combination thereof. The differential pair stage may output the common mode voltage to the pixel via the output stage in response to the first signal being present.

Auto-zero applied buffer for display circuitry

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Palo Alto, CA, United States of America

Jaeyoung Kang