IoT Display Terminal Picture Updates with External Memory Offload
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Solution Overview
Problem
Existing Internet of Things (IoT) terminals with low-power microcontrollers lack sufficient processing capacity and resources to handle picture processing due to limited RAM and power consumption constraints.
Innovation Solution
An IoT terminal design that includes a communicator, microcontroller, storage device, and display device, where the microcontroller converts and stores pictures in an external storage device, allowing it to offload picture processing tasks, utilizing a serial peripheral interface for communication and employing a color separation method to manage monochrome and base pictures independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a low-power microcontroller is used to reduce power consumption, then energy efficiency is improved, but picture processing capability deteriorates due to limited resources
Solution Approach 1:
The patent extracts the picture processing function from the microcontroller and places it in an external FPGA device. The microcontroller only handles data preparation and transmission, while the FPGA performs the computationally intensive picture processing tasks. This separation allows the low-power microcontroller to maintain its energy efficiency while the system gains enhanced picture processing capability through the FPGA.
2Speed
If picture processing is performed within the microcontroller, then processing speed is improved, but device complexity and resource requirements worsen
Solution Approach 1:
The system segments the processing tasks between the microcontroller and FPGA. The microcontroller handles data acquisition, preprocessing, and control functions, while the FPGA handles the computationally intensive picture processing. This segmentation allows each component to be optimized for its specific function, maintaining processing speed while reducing the resource requirements of the microcontroller.
3Speed
If all picture data is stored in microcontroller memory, then access speed is improved, but memory requirements and power consumption worsen
Solution Approach 1:
The patent introduces an external memory device as an intermediary between the microcontroller and FPGA. The memory device stores picture data and provides fast access to both components through dedicated interfaces. This allows the system to maintain high data access speed while distributing memory requirements across external storage rather than requiring large microcontroller internal memory.
Data Source
AI summary
The present disclosure provides an IoT terminal and a picture updating method therefor, which belong to the field of display technology. The IoT terminal includes: a communicator configured to receive text and picture information; a micro controller coupled with the communicator and configured to convert the text and picture information into a to-be-displayed picture; a storage device coupled with the micro controller and configured to store the to-be-displayed picture; and a display device coupled with the micro controller. The micro controller is further configured to read the to-be-displayed picture from the storage device and write the to-be-displayed picture into the display device for display. The solution of the present disclosure enables the low-power IoT terminal to complete processing of pictures.