Smart TV Standby Mode Using Memory Self-Refresh for Fast Resume

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Solution Overview

Problem

Conventional smart television systems experience slow power-on speeds due to the need for reloading and initializing the system, main program, and database link process, resulting in unsatisfactory user experiences.

Innovation Solution

A method that involves quitting operating interfaces, storing the main chip's status, and keeping the memory chip in a self-refresh mode during shutdown, and restoring power and status when turning on to skip reloading and initialization processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the system is completely disconnected from power during shutdown, then energy consumption is reduced, but the turn-on speed becomes slow due to complete reloading and initialization

Engineering Contradiction:

Improvepower consumptionVSAvoidturn-on time

Core Design Contradiction:

Loss of energyVSLoss of time

Solution Approach 1:

The system performs preliminary actions during shutdown by storing the status of the main chip and keeping the memory chip in self-refresh mode, so that when power is restored, the system can quickly resume operation without complete reloading and initialization

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The memory chip transitions from normal operating mode to self-refresh mode during shutdown, changing its operational parameters to maintain data while consuming minimal power, enabling fast resume on power-on

Inventive Principle:

Principle #35Parameter changes

2Loss of energy

If the main chip and peripheral devices enter low power consumption state during standby, then power consumption is reduced, but the system cannot achieve true standby mode when wake lock is locked

Engineering Contradiction:

Improvepower consumptionVSAvoidstandby mode reliability

Core Design Contradiction:

Loss of energyVSReliability

Solution Approach 1:

Different components are placed in different power states during standby: the main chip enters idle status while the memory chip remains in self-refresh mode, allowing selective power management that achieves both energy savings and standby reliability

Inventive Principle:

Principle #3Local quality

3Loss of energy

If all non-activation chips enter idle status during shutdown, then power consumption is reduced, but the system requires complete system reload upon power-on

Engineering Contradiction:

Improvepower consumptionVSAvoidsystem startup efficiency

Core Design Contradiction:

Loss of energyVSProductivity

Solution Approach 1:

The status of the main chip is stored before shutdown, and the memory chip is prepared in self-refresh mode in advance, so that upon power-on, the system can restore operation quickly without requiring complete reloading and initialization sequences

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9554187B2Smart television system and turn-on and turn-off method thereof

Publication Date: 2017.01.24 MEDIATEK INC

AI summary

A smart television, and a turn-off method and a turn-on method for the smart television system are provided. The smart television system includes a remote controller and a smart television. The smart television includes a remote control module, a main chip, a memory chip and a memory chip. The turn-off method includes: when a remote control signal is received from the remote controller, quitting all operating interfaces of the television system; executing a television main program, which enters a wait status after completing loading a database and a program link process; storing a status of the main chip, and causing the memory chip to stay in a self-refresh operating mode; disconnecting power supplied to modules other than the remote control module and the memory chip, and the smart television system entering a turn off status.