Processor-Display Pulse Synchronization Through Separate Signal Paths
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Solution Overview
Problem
Existing electronic devices face synchronization issues between processors and display driver circuits due to unsynchronized operations and power states, leading to inefficiencies and potential display artifacts like afterimages.
Innovation Solution
Implementing a separate path for pulse signals to synchronize display driver circuits with processors, allowing for adaptive waveform changes based on different synchronization signals to manage power states and control commands, ensuring synchronized operations despite varying display states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single path is used for both image transmission and synchronization signals, then device complexity is reduced, but synchronization reliability deteriorates due to potential signal interference and timing conflicts
Solution Approach 1:
The patent divides the signal transmission path into two separate paths: a first path for transmitting images and a second path for transmitting synchronization signals. This segmentation ensures that synchronization signals are not interfered with by image data transmission, thereby improving synchronization reliability without requiring complex signal separation mechanisms.
2Adaptability or versatility
If pulse signal waveform is kept constant, then ease of operation is improved, but adaptability deteriorates when power states or display conditions change
Solution Approach 1:
The patent implements dynamic waveform adjustment of the pulse signal based on the power state of the display driver circuit. The waveform changes from a first waveform during a first power state to a second waveform during a second power state. This dynamic adaptation ensures optimal synchronization and control under different operating conditions while maintaining straightforward control through state-dependent waveform selection.
Solution Approach 2:
The patent changes the waveform parameter of the pulse signal according to the power state. By modifying the waveform characteristics (such as duty cycle, frequency, or amplitude) based on the operational state, the system achieves adaptability to different power conditions without requiring complex control mechanisms.
3Manufacturing precision
If synchronization is maintained during power state transitions, then display quality is improved, but energy consumption increases due to continuous signal transmission
Solution Approach 1:
The patent transmits synchronization signals periodically rather than continuously. The pulse signal is transmitted at specific intervals based on the power state, allowing the system to maintain synchronization precision during active periods while reducing energy consumption during power-saving periods. This periodic transmission strategy balances display quality with energy efficiency.
Data Source
AI summary
An electronic device is provided. The electronic device includes a processor. The electronic device includes a display including a display driver circuit and a display panel. The electronic device includes a first path connecting the display driver circuit to the processor. The electronic device includes a second path connecting the display driver circuit to the processor and separate from the first path. The processor is configured to transmit, based on a first cycle, via the second path to the display driver circuit, a pulse signal to synchronize, with a first time period in the processor used to display an image transmitted via the first path to the display driver circuit on the display panel, the first time period in the display driver circuit used to display the image on the display panel. The processor is configured to change, based on a second cycle different from the first cycle, a waveform of the pulse signal transmitted from the first cycle from a first waveform to a second waveform to synchronize, with a second time period in the processor used for the display of the image, the second time period in the display driver circuit used for the display of the image.