Always-On Display MIPI Data Packaging for Lower Power Updates
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Solution Overview
Problem
Existing smart terminal displays lack unified communication interfaces for the always on display function, leading to inefficiencies in research and development and high power consumption due to frequent image updates.
Innovation Solution
Implement a method and device for always on display using dedicated fields in the MIPI protocol's display command set to unify communication interfaces, allowing manufacturers to develop application processors and liquid crystal display modules efficiently, and reduce power consumption by optimizing data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image updates are performed frequently to maintain display accuracy, then display precision is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic image updates at predetermined time intervals instead of continuous updates. The AP controller updates the display image only at specific intervals, reducing the frequency of communication operations between AP and LCM, thereby lowering power consumption while maintaining acceptable display accuracy for always-on display functionality.
Solution Approach 2:
The patent extracts and transmits only the necessary data fields (first field indicating data packet type, second field indicating data type) required for always-on display functionality, rather than transmitting complete image data continuously. This selective data transmission reduces communication overhead and power consumption while maintaining display accuracy.
2Ease of manufacture
If unified communication interfaces are implemented, then ease of manufacture is improved, but device complexity increases due to protocol definition
Solution Approach 1:
The patent defines a universal communication interface based on the MIPI DCS protocol that can be used for always-on display functionality across different AP and LCM combinations. The standardized data packet format with predefined fields enables different manufacturers' components to work together, improving ease of manufacture and development efficiency despite the added protocol definition.
Data Source
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AI summary
The present disclosure relates to a method and a device for always on display, a computer-readable storage medium and a program product. The method includes: transmitting at least one data packet to a LCM via a MIPI protocol; displaying an information content by the LCM through an always on display function based on the at least one data packet that includes data required for always on display, wherein the data packet further includes a first field and a second field for each of the at least one data packet, the first field and the second field both are fields predefined for the always on display function in a DCS of the MIPI protocol, the first field is configured to indicate the data packet to be a data packet for performing always on display, and the second field is configured to indicate a type of data included in the data packet.