Panel Driver Command Data Extraction via Still Image Multiplexing
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Solution Overview
Problem
Current display devices require additional wiring or a change in interface mode to transfer command data, which is inefficient and complicates the integration of image and command data transfer between host processors and display devices.
Innovation Solution
A display device with a panel driver that includes a partial still image detector and command decoder, allowing it to identify and extract command data encoded in still image data portions within the input data, enabling efficient transfer of both image and command data without changing the interface mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional wiring is disposed between the host processor and the display device to transfer command data, then command data transfer capability is improved, but device complexity increases
Solution Approach 1:
The patent merges command data transfer with image data transfer by multiplexing the same physical channel. The host processor encodes command data into the image data transmission stream, allowing both image data and command data to share the same wiring between the host processor and display device, thereby eliminating the need for additional dedicated wiring for command data.
Solution Approach 2:
The patent makes the image data transmission channel universal by enabling it to carry both image data and command data. The display device detects whether received data contains command data and processes accordingly, allowing a single channel to serve multiple functions (image transfer and command transfer) without requiring separate dedicated channels.
2Adaptability or versatility
If interface mode is changed from video mode to command mode to transfer command data, then command data transfer capability is improved, but operational efficiency decreases
Solution Approach 1:
The patent implements dynamic mode switching within the data stream. The host processor and display device use mode detection mechanisms to identify whether the incoming data stream contains image data, command data, or a combination thereof. This allows the system to dynamically adapt to different data types without requiring manual interface mode changes, maintaining operational efficiency while enabling command data transfer.
Solution Approach 2:
The patent employs periodic detection and processing cycles where the display device continuously monitors the incoming data stream for command data markers. When command data is detected, the system processes it accordingly; when only image data is present, normal image processing continues. This periodic checking mechanism enables command data transfer without requiring sustained interface mode changes.
3Productivity
If command data are encoded in still image data portion, then data transfer efficiency is improved, but data processing complexity increases
Solution Approach 1:
The patent extracts command data from the image data stream by detecting specific markers or patterns that indicate the presence of command data within the still image data portion. Once extracted, the command data can be processed separately from the image data, allowing the system to maintain high transfer efficiency while managing processing complexity through separation of concerns.
Solution Approach 2:
The patent introduces an intermediary detection and processing layer between the data reception and command execution stages. This intermediary layer (including detection units and processing circuits) handles the complexity of identifying and extracting command data from the image data stream, shielding the rest of the system from the complexity details while enabling efficient command data transfer.
Data Source
AI summary
A display device includes a display panel including a plurality of pixels, and a panel driver configured to receive input data, and to drive the display panel based on the input data. The panel driver includes a partial still image detector configured to detect a still image data portion in the input data by determining whether at least a portion of the input data represents a still image, and a command decoder configured to extract command data from the input data by decoding the still image data portion in which the command data are encoded.