ASIC Design for Real-Time One-Shot Correction of Optical Aberrations and Perspective Distortion in Microdisplay Systems

Eo, Sung-Wook; Lee, Joon Goo; Kim, Minseok; Ko, Young-Chai

doi:10.1109/access.2018.2815765

Cited by 5 publications

(8 citation statements)

References 22 publications

(19 reference statements)

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“…The varying incident angle between the laser scanning pattern and the planar glass wafer causes the varying angle of refraction on air-glass boundaries. Corrections for these distortions could be designed into the optics or distortion correction algorithms [15][16][17] may be used to compensate for the distortions in an imaging application. Figure 8 presents a varying scanning pattern that meets the design specifications.…”

Section: Optical Test Setupmentioning

confidence: 99%

Resonating AlN-thin film MEMS mirror with digital control

Ruotsalainen

Morits

Ylivaara

et al. 2022

J. Optical Microsystems

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Piezoelectrically actuated resonant micromirrors were designed to meet the light detection and ranging (LiDAR) system requirements. Key features were a 3-mm mirror aperture, a 40-deg field of view, and a 50-Hz refresh rate. The presented micromirror provides biaxial symmetrical beam steering with AE12.7 deg mechanical tilt angle, resulting in a 50-deg field of view with an adjustable Lissajous XY-scanning pattern for a forward-looking LiDAR system. The mirrors were fabricated using silicon on insulator wafers, and actuation was based on piezoelectric aluminium nitride thin film. The mirrors were vacuum packaged for high-quality factor resonator operation. The device design contained eight separate piezoelectric aluminium nitride elements arranged as differential pairs for each axis, where each actuator was equipped with a sensing element providing a mechanically coupled electrical feedback signal. The piezoelectric elements connected as actuators required only minimal power and were directly compatible with CMOS low-voltage logic, which eases integration to driving digital systems. The sense elements are used to monitor phase, amplitude, and frequency. A digital control system connected to each of these elements provides accurate frequency and phase control of independent orthogonal resonators, permitting control of the X and Y amplitudes and the refresh rate of the Lissajous pattern.

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Section: Optical Test Setupmentioning

confidence: 99%

Resonating AlN-thin film MEMS mirror with digital control

Ruotsalainen

Morits

Ylivaara

et al. 2022

J. Optical Microsystems

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“…From the introduction in the previous section, it can be seen that the internal control function of the non-volatile device memory used in the design of the drive power quality management system chip can be basically divided into three functional modules: the main state machine data control function module, read data control function module and read and write data control function module [10][11]. According to different functional requirements, we can divide each module in detail, as shown in Table 1 Home agent PM firmware Among them: The main control function of the chip read state machine data control management module is to read the chip OTP or internal memory data or read instructions.…”

Section: Figure 1 Non-volatile Ferroelectric Read-write Memory Chip C...mentioning

confidence: 99%

Outdoor Full-color LED Display for Sports Games Based on Non-volatile Ferroelectric Read-write Memory Chip

2022

IJST

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With the continuous update of industry technology, LED LCD displays are developing rapidly in the direction of high-brightness and full-color development. All-round color LED LCD displays are better and better showing their broad industry applications. The article is based on a non-volatile ferroelectric read-write memory chip designed for outdoor sports competitions full-color LED display. First, the detailed design introduces the actual design and application of the non-volatile power data management memory in the design of the power management data network management control software chip system and the principle of the control software, and analyzes in detail how to realize the specific design functions according to the specific design specifications of the software system. , And then a new power management control system management software system that can scroll the full-color node LED horizontally on the display screen, adopts the power network management ARM Cortex-M3 core and uses the power supply microprocessor and network STM32 as the power supply The management control software system center, with the power network management FPGA as the central system, completes the high-speed horizontal scrolling of the entire scrolling display screen and the scrolling refresh of the display screen, and completes the system control software principle and design layout of the power management layer and the network PCB power supply Control and manage the software processing design of the layout, the hardware processing design of the circuit board and the software installation and debugging. The LED display screen can meet the functional requirements of outdoor sports games, and the display rate of the image of the LED full-color display screen has reached 91.82% on average, which has good stability.

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“…We had designed a hardware logic for the correction of both optic distortion and perspective distortion for FSC-type (Field Sequential Color) LCoS (Liquid Crystal on Silicon) display panel [7]. It utilized bi-linear approximation with the fixed number of rectangular shaped grids to morph input video in real-time for compensating visual artifacts from optics or surroundings.…”

Section: Prior Workmentioning

confidence: 99%

56‐2: A Distraction‐free Display System using Embedded Asynchronous Time Warp

Hong¹,

Park²,

Kim³

et al. 2022

Symp Digest of Tech Papers

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We propose a distraction‐free display system and present display controller design to realize the system. The designed controller utilized embedded asynchronous time warp (ATW) for dynamic view change in accordance with a user's head motion. Proposed design can be used for lightweight information displays to provide better user experience as an affordable solution even without application processor‐centric designs.

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ASIC Design for Real-Time One-Shot Correction of Optical Aberrations and Perspective Distortion in Microdisplay Systems

Cited by 5 publications

References 22 publications

Resonating AlN-thin film MEMS mirror with digital control

Resonating AlN-thin film MEMS mirror with digital control

Outdoor Full-color LED Display for Sports Games Based on Non-volatile Ferroelectric Read-write Memory Chip

56‐2: A Distraction‐free Display System using Embedded Asynchronous Time Warp

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