Time-of-Flight Sensing Circuitry Dynamic Mode Switching
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Solution Overview
Problem
Existing time-of-flight systems face limitations in programmability and data communication speed, which restrict their ability to dynamically change imaging modes and result in increased costs and complexity, especially when dealing with different types of image sensors.
Innovation Solution
A time-of-flight sensing circuitry with a light sensing circuitry and logic circuitry that can dynamically set imaging modes among different modes, including full frame, binned frame, infrared, and 3D modes, using a sequencer circuitry to select registers and manage imaging sequences, reducing the need for frequent host-sensor interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the host controls the time-of-flight image sensor to set operation modes or configure frame content, then the system can change imaging modes, but intense data communication is required between host and sensor
Solution Approach 1:
The time-of-flight image sensor is equipped with integrated logic circuitry that autonomously controls operation modes and frame configuration without requiring continuous host intervention. The sensor independently adjusts imaging parameters based on stored programs or internal state, eliminating the need for intense bidirectional communication while maintaining full adaptability across different imaging modes.
2Adaptability or versatility
If different types of image sensors are incorporated to expand programmability options, then more imaging modes are available, but costs increase and programmability is complicated
Solution Approach 1:
A single time-of-flight image sensor integrates multiple imaging functionalities including depth measurement, color imaging, and various frame configuration modes within one device. The sensor includes programmable logic circuitry that can be configured through stored programs to perform different imaging tasks, eliminating the need for multiple specialized sensors while providing comprehensive programmability options.
3Adaptability or versatility
If the time-of-flight image sensor outputs frame information with adjustable configuration, then imaging flexibility is improved, but frequent host-sensor data transfers are required
Solution Approach 1:
The sensor includes memory circuitry that stores pre-configured frame parameters and operation mode settings. Before actual imaging operations, the desired configuration is programmed into the sensor's memory, allowing the sensor to autonomously switch between different frame configurations without requiring real-time host communication during operation, thus improving operational efficiency while maintaining flexibility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the configurability and speed of depth measurement systems, allowing for efficient switching between imaging modes without the need for frequent data transfers, thereby improving operational efficiency and reducing costs by integrating multiple sensing functionalities within a single circuitry.
Implementation Method 1
a light sensing circuitry for detecting light and outputting light sensing signals
Data Source
AI summary
The present disclosure generally pertains to a time-of-flight sensing circuitry for sensing image information in different imaging modes, having: a light sensing circuitry for detecting light and outputting light sensing signals; and a logic circuitry for processing the light sensing signals from the light sensing circuitry, wherein the logic circuitry is configured to dynamically set an imaging mode among the different imaging modes.