Transceiver Power Management via Dual Driver Segmentation
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Solution Overview
Problem
Standard MIPI specifications lack power control methods for state machines, leading to inefficient power consumption in display devices.
Innovation Solution
A transceiver system with a transmitter and receiver connected by two lines, utilizing low-power and high-speed drivers, along with a power controller, to manage power states and optimize power consumption by generating different voltage levels and controlling operations based on input signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single driver operates in all states, then the device is simpler to control, but power consumption increases during idle and stop states
Solution Approach 1:
The receiver is divided into two separate drivers: a low-power driver for low-power mode and a high-speed driver for high-speed mode. Each driver is independently controlled based on the operational state, allowing the system to select the appropriate driver and minimize power consumption during idle and stop states while maintaining simple control through state-based selection.
2Use of energy by moving object
If different voltage ranges are used for different modes, then power consumption is reduced, but the system complexity increases
Solution Approach 1:
The system changes the voltage range parameter based on operational mode. In low-power mode, signals use a first voltage range suitable for low-power operation, while in high-speed mode, signals use a second voltage range optimized for high-speed transmission. This parameter change allows power consumption reduction without requiring fundamentally different hardware architectures.
3Reliability
If power supplies are continuously active, then the device is always ready to operate, but power consumption increases during idle states
Solution Approach 1:
The power supplies are dynamically controlled based on operational state. The first power supply is activated only when the low-power driver needs to operate, and the second power supply is activated only when the high-speed driver needs to operate. This dynamic power management ensures the device is ready to operate when needed while minimizing power consumption during idle and stop states.
Data Source
AI summary
A transceiver includes a transmitter and a receiver connected to each other by a first line and a second line. The transmitter transmits signals each having a first voltage range to the first line and the second line in a first mode, and signals each having a second voltage range less than the first voltage range to the first line and the second line in a second mode. The receiver includes a low-power driver which receives signals through the first line and the second line in an operating state of the first mode, and stops an operation thereof in the second mode, and a high-speed driver which receives signals through the first line and the second line in the second mode, and stops an operation thereof in the first mode.