LVDS Interface Power Saving Mode Control
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Solution Overview
Problem
Current power consumption management in systems employing low-voltage differential signaling (LVDS) for high-speed data transmission is inefficient, leading to increased standby power in portable devices, which reduces their operational time between charges.
Innovation Solution
A method and system that transition interface blocks to a power saving mode based on the status of transmission channels, disabling clock generators and setting transmission channels to a higher impedance state to reduce power consumption, and releasing this mode upon triggering conditions such as user input or data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If LVDS interface blocks remain active for high-speed data transmission, then data transmission capability is maintained, but power consumption increases
Solution Approach 1:
The LVDS interface block dynamically transitions between active and power-saving modes based on transmission channel status. When no data transmission is detected, the interface block enters a low-power state by disabling clock generators and reducing operational activity, while maintaining the ability to quickly resume transmission when needed.
Solution Approach 2:
The system changes operational parameters of the LVDS interface block by disabling clock generators and modifying impedance states when transitioning to power-saving mode. This parameter change reduces power consumption while preserving the capability to restore full functionality upon receiving a resume signal.
2Use of energy by moving object
If interface blocks transition to power saving mode, then power consumption is reduced, but data transmission capability is temporarily compromised
Solution Approach 1:
The system implements feedback mechanisms where the LVDS interface block monitors transmission channel status and responds by transitioning to power-saving mode when idle. A resume signal provides feedback to exit the power-saving state, ensuring reliable data transmission is restored when needed while maintaining power efficiency during idle periods.
Solution Approach 2:
The interface block performs preliminary actions by disabling clock generators and entering power-saving mode in advance during idle periods. This preliminary power reduction is reversible upon receiving a resume signal, allowing the system to quickly restore full transmission capability when data transmission is required.
3Use of energy by stationary object
If clock generators are disabled to reduce power, then standby power consumption decreases, but system responsiveness is reduced
Solution Approach 1:
The clock generators operate periodically rather than continuously. They are enabled during active transmission periods and disabled during idle periods, creating a periodic on/off pattern that reduces overall power consumption while maintaining system responsiveness when transmission is required.
Data Source
AI summary
A system and method of controlling power consumption are provided. The example method may be directed to controlling power consumption in a system including first and second interface blocks, and may include transitioning a first interface block to a power saving mode in response to a status of a first transmission channel, the first transmission channel configured to forward information from the first interface block to a second interface block and transitioning a second interface block to the power saving mode in response to a status of a second transmission channel, the second transmission channel configured to forward information from the second interface block to the first interface block. The example system may include a first interface block transitioning to a power saving mode in response to a status of a first transmission channel and a second interface block transitioning to the power saving mode in response to a status of a second transmission channel, the first transmission channel configured to forward information from the first interface block to the second interface block and the second transmission channel configured to forward information from the second interface block to the first interface block.