Data Processing Device Power State Management
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Solution Overview
Problem
Conventional data processing devices with HDDs as recording media face delays in starting recording when powered off, as HDD spin-up times are lengthy, and methods to mitigate this either compromise power savings or increase complexity and cost.
Innovation Solution
Implementing a data processing device with three power states: power-off, recording standby, and power-on, where the device transitions from power-off to recording standby upon detecting a connected display device's activation, allowing for swift spin-up and power savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the HDD is activated from the power-off state, then the device can be power-saving, but it takes 8 to 20 minutes to complete spin-up and cannot immediately start recording
Solution Approach 1:
The patent applies preliminary action by transitioning the HDD to a recording standby state before actual recording begins. When the television receiver is turned on, the HDD recorder automatically transitions from power-off to recording standby state, performing preliminary spin-up in advance. This allows the HDD to be ready for immediate recording when a recording start signal is received, resolving the contradiction between power-saving and quick response.
2Productivity
If the HDD is kept in ready-to-record state by supplying electric power during power-off state, then immediate recording can start, but power saving cannot be achieved due to high power consumption
Solution Approach 1:
The patent applies dynamics by creating a dynamic power state management system with three distinct states: power-off state, recording standby state, and power-on state. The system dynamically transitions between these states based on operational needs. The recording standby state serves as an intermediate dynamic state where the HDD is prepared for quick recording without continuous full power supply, resolving the contradiction between productivity and energy loss.
3Loss of time
If a data buffer is added to temporarily store data until HDD completes spin-up, then immediate recording can start, but the structure becomes more complicated and production cost increases
Solution Approach 1:
The patent applies the taking out principle by extracting the data buffering function from a separate physical buffer component and integrating it into the existing data processing flow. Instead of adding a dedicated buffer device, the system processes and temporarily holds data within the existing control and processing units during the spin-up transition, achieving immediate recording capability without increasing structural complexity or production cost.
Data Source
AI summary
A data processing device connects to a first display and operates in a power state including a power-off state, a recording standby state, and a power-on state. A second display displays an operation state of the data processing device. A power controller supplies electric power to a driver in the power-on state and the recording standby state, and stops supplying the electric power in the power-off state. The second display indicates that power is ON in the power-on state, and indicates that the power is OFF in the recording standby state and the power-off state. The power controller switches the power state from the recording standby state to the power-on state when a signal instructing start of a recording operation is received from the first display and the power state is the recording standby state.