Synchronized Code Recognition for Low Power Wake-Up

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Solution Overview

Problem

Existing remote control systems for devices in time division multiplexed networks face challenges such as high power consumption due to maintaining satellite controllers in an active state, shortened battery life, and the need for frequent synchronization, which increases costs and power usage, especially when dealing with large numbers of controllers and time-critical tasks.

Innovation Solution

A synchronized auto wake-up time division multiplexed network system where a central controller transmits synchronization codes to satellite controllers, which generate a synchronous clock signal to wake up peripheral devices only when necessary, avoiding interference and conserving power by using programmable timers and internal clock generators to manage responses and state changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If satellite controllers are kept in an active state to receive polling and control data, then control responsiveness is improved, but power consumption increases

Engineering Contradiction:

Improvecontrol responsivenessVSAvoidpower consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic wake-up cycles where satellite controllers alternate between sleep and active states. Controllers wake up at predetermined intervals to receive polling data or transmit status information, then return to sleep mode. This periodic operation maintains system responsiveness while dramatically reducing average power consumption compared to continuous active operation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system uses predetermined wake-up times and scheduled communication windows to prepare for upcoming polling or data transmission events. Satellite controllers are programmed with advance knowledge of when they need to be active, allowing them to enter low-power mode confidently knowing when to wake up next, eliminating the need for continuous monitoring.

Inventive Principle:

Principle #10Preliminary action

2Use of energy by moving object

If satellite controllers are kept in a sleep state to reduce power consumption, then power overhead is reduced, but synchronization complexity increases

Engineering Contradiction:

Improvepower overheadVSAvoidsynchronization complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent incorporates feedback mechanisms where satellite controllers report their status and timing information back to the central controller. The central controller uses this feedback to adjust polling schedules and wake-up times, ensuring that even though controllers are sleeping, the system maintains accurate synchronization through continuous monitoring and adaptive scheduling.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The synchronization mechanism serves multiple functions simultaneously: it coordinates wake-up times, schedules polling operations, manages data transmission windows, and maintains timing accuracy across all satellite controllers. This multi-functional approach consolidates what could be separate complex systems into a unified synchronization protocol.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If satellite controllers are awakened regularly to maintain synchronization, then clock accuracy is maintained, but power consumption increases

Engineering Contradiction:

Improveclock accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The system implements partial synchronization where not all satellite controllers are awakened at the same frequency or at all times. The central controller selectively wakes up only those controllers that need to communicate or be polled, rather than awakening all controllers uniformly. This partial action maintains necessary synchronization while minimizing unnecessary wake-ups and associated power consumption.

Inventive Principle:

Principle #16Partial or excessive action

4Measurement precision

If each satellite controller requires a very accurate local time base, then synchronization precision is improved, but system cost and power consumption increase

Engineering Contradiction:

Improvesynchronization precisionVSAvoidsystem cost

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces the central controller as an intermediary time-keeping authority that maintains the master time base. Instead of requiring each satellite controller to have an independently accurate time base, the central controller acts as the time reference, and all satellite controllers synchronize their operations relative to the central controller's timing signals and polling schedules.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS8315202B1Synchronized code recognition

Publication Date: 2012.11.20 E2E SYSTEMS LLC

AI summary

A system includes a central controller to transmit a plurality of synchronization codes through a transmission medium and a plurality of satellite controllers, each satellite controller configured to recognize one or more synchronization codes of the plurality of synchronization codes, each satellite controller comprising a synchronous clock signal generator to generate a synchronous clock signal each time the satellite controller recognizes the one or more synchronization codes of the plurality of synchronization codes.