Image Transmission Clock Controller for Power-Performance Trade-off
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Solution Overview
Problem
Image transmission methods that reduce processor drive frequency to conserve power often result in performance degradation, leading to frame dropping or discontinuous playback, which is unacceptable for applications like video transmission in conferences or presentations.
Innovation Solution
An image transmission apparatus with a processor and a clock controller that adjusts the drive clock frequency based on the display mode information received from the display apparatus, optimizing power consumption without degrading display quality by controlling the processing load for image data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the drive frequency of the processor is decreased to reduce power consumption, then power consumption is reduced, but processing performance degrades significantly causing frame dropping or discontinuous playback
Solution Approach 1:
The processor dynamically adjusts its drive frequency based on real-time transmission conditions and image data characteristics. The frequency is increased when processing complex images or during full-screen transmission, and decreased during low-activity periods or when transmitting smaller image regions, thereby maintaining performance reliability while optimizing power consumption.
Solution Approach 2:
The system changes the drive frequency parameter adaptively according to different transmission scenarios. By monitoring image complexity, transmission bandwidth requirements, and power consumption levels, the system adjusts the frequency parameter to achieve the optimal balance between performance and energy efficiency for each specific condition.
2Use of energy by moving object
If the drive frequency of the processor is decreased to reduce power consumption, then power consumption is reduced, but processing speed decreases causing delays in image transmission
Solution Approach 1:
The processor operates at dynamically adjusted frequencies rather than a fixed low frequency. When image processing requirements increase or transmission deadlines approach, the frequency is raised to ensure timely completion of processing tasks, preventing transmission delays while still maintaining lower average power consumption during less demanding periods.
Solution Approach 2:
The system performs preliminary assessment of image complexity and transmission requirements before initiating full processing. Based on this preliminary analysis, it pre-adjusts the drive frequency to an appropriate level, ensuring that processing begins at the optimal speed from the start, thereby avoiding delays without unnecessarily consuming power throughout the entire processing cycle.
3Use of energy by moving object
If the drive frequency of the processor is decreased to reduce power consumption, then power consumption is reduced, but the quality of video transmission deteriorates
Solution Approach 1:
The system adaptively changes the drive frequency parameter based on video quality requirements and transmission conditions. When high video quality is required (e.g., during presentations or video conferences), the frequency is increased to ensure adequate processing capability. When quality requirements are lower or bandwidth is limited, the frequency is reduced to save power, thereby maintaining acceptable video quality across varying conditions while optimizing energy consumption.
Data Source
AI summary
An image transmission apparatus includes: a processor that performs a process of generating image data and that transmits the image data to a display apparatus connected via a network; and a clock controller that receives information relating to a display mode of the display apparatus from the display apparatus and that controls a drive clock frequency of the processor based on the information.