Interleaved Display and Camera Timing for Under-Display Sensors
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Solution Overview
Problem
Conventional camera-under-display (CUD) configurations cannot operate simultaneously with display pixels, as the camera is switched ON when display pixels are OFF and vice versa, limiting their functionality.
Innovation Solution
An apparatus and method that interleaves display ON/OFF periods and camera exposure ON/OFF periods, allowing the CUD area to continuously display data while the camera captures images by coordinating the operations of the display screen and camera using a processor and memory to manage these periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera is switched ON for image capture, then the camera can capture images, but the display pixels in the CUD area must be switched OFF, causing the display to not show data continuously
Solution Approach 1:
The patent implements periodic switching between display ON/OFF states and camera exposure ON/OFF states in an interleaved pattern. The display alternates between showing data and being turned off for camera capture, creating a rhythmic sequence where each component operates periodically without continuous interference from the other.
Solution Approach 2:
The system dynamically adjusts the timing and duration of display and camera operations based on operational requirements. The interleaved pattern allows flexible control over when the display is visible versus when the camera is active, enabling adaptive response to different usage scenarios while maintaining both functions.
2Duration of action of stationary object
If the display pixels are switched ON continuously, then the CUD area can display data continuously, but the camera cannot capture images as it requires the display to be OFF
Solution Approach 1:
The system employs periodic action by alternating between display-dominant periods and camera-dominant periods. During display ON periods, the CUD area shows data continuously. During camera exposure ON periods, the display turns off to enable image capture. This periodic alternation ensures both functions receive adequate operational time.
Solution Approach 2:
The system dynamically manages the transition between display and camera operations, adjusting the timing parameters to optimize both display continuity and camera capture capability based on real-time operational needs.
3Device complexity
If conventional CUD configurations are used with mutually exclusive display and camera operation, then device complexity is reduced, but functionality and versatility are limited
Solution Approach 1:
The patent uses periodic interleaved switching to manage the complexity of coordinating display and camera operations. Rather than requiring complex real-time arbitration, the system employs a structured periodic pattern that simplifies control logic while enabling both functions to operate reliably in sequence.
Solution Approach 2:
The CUD area serves multiple functions through the interleaved pattern - it acts as a display region during display ON periods and as a camera aperture during camera exposure ON periods. This multi-functionality increases system versatility without adding physical components, allowing the same physical space to serve different purposes at different times.
Data Source
AI summary
Apparatus, methods, and program products for interleaving display ON/OFF periods and camera ON/OFF periods for camera-under-display (CUD) configurations are disclosed. One apparatus includes a display screen including a CUD area, the display screen configured for switching between display ON periods and display OFF periods, and a camera positioned behind the CUD area of the display screen, the camera configured for switching between exposure ON periods and exposure OFF periods. The apparatus further includes a processor and a memory that stores code executable by the processor. The code is executable by the processor to interleave the display ON/OFF periods and the exposure ON/OFF periods such that the CUD area appears to continuously display data and the camera is simultaneously able to capture images. Methods and computer program products that perform the operations and/or functions of the apparatus are also disclosed.