Projection Apparatus Autonomous Time Calibration via Network

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Solution Overview

Problem

Existing projection apparatus systems relying on central control terminals for scheduling and time calibration lack flexibility and increase costs, and fail to function independently if the central terminal is unavailable.

Innovation Solution

A projection apparatus equipped with a schedule module, timing module, and network process module that allows it to connect to a server for time signals and schedule information, enabling autonomous execution of operations and time calibration without a central control terminal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a central control terminal is used to manage and schedule projection apparatuses, then centralized control and scheduling functions are achieved, but system complexity and cost increase

Engineering Contradiction:

Improvecentralized schedulingVSAvoidsystem structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The projection apparatus is equipped with an independent timing module and schedule module that enable it to autonomously execute scheduled operations and perform time calibration without requiring a central control terminal. The apparatus self-manages its scheduling and timing functions, eliminating the need for external centralized control infrastructure.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The scheduling and timing functions are segmented from the central control terminal and distributed to individual projection apparatuses. Each apparatus contains its own timing module and schedule module, allowing independent operation while maintaining the ability to be remotely controlled when needed.

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If a central control terminal is deployed for time calibration, then time synchronization is achieved, but additional hardware cost is incurred

Engineering Contradiction:

Improvetime calibrationVSAvoidhardware components

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The projection apparatus autonomously performs time calibration by receiving time signals from NTP servers through its network interface. The timing module independently compares and adjusts its internal time against the network time source without requiring a central control terminal or additional calibration hardware.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The network interface module serves multiple functions: it enables both remote control communication and NTP time synchronization. This multi-functionality eliminates the need for separate dedicated hardware for time calibration, reducing overall system cost.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Use of energy by moving object

If the projection apparatus is powered off completely, then energy consumption is reduced, but the timing module becomes inaccurate

Engineering Contradiction:

Improvepower consumptionVSAvoidtiming accuracy

Core Design Contradiction:

Use of energy by moving objectVSMeasurement precision

Solution Approach 1:

The timing module continues to operate in a low-power standby mode during periods when the projection apparatus is not actively projecting. This preliminary maintenance of timing functionality ensures that when the apparatus is next activated, the timing module is already accurate and synchronized, eliminating the need for extended warm-up or recalibration periods.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The timing module continuously receives feedback from NTP time signals even when the projection apparatus is in a low-power state. This ongoing feedback mechanism allows the timing module to maintain accurate time synchronization without requiring full power consumption, resolving the conflict between energy savings and timing accuracy.

Inventive Principle:

Principle #23Feedback

4Adaptability or versatility

If the projection apparatus can operate independently without a central control terminal, then system flexibility and reliability are improved, but the apparatus complexity increases

Engineering Contradiction:

Improveindependent operationVSAvoidapparatus structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The timing module and schedule module functions are integrated into the existing projection apparatus structure, combining multiple functions (projection control, timing, scheduling, and network communication) into a unified system. This integration achieves independent operation capability without proportionally increasing overall apparatus complexity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8201952B2Projection apparatus and projection system comprising the same

Publication Date: 2012.06.19 DELTA ELECTRONICS INC(CN)

AI summary

A projection apparatus and a projection system comprising the same are provided. The projection apparatus is adapted to connect to a server for transmitting a time signal via a network. The projection apparatus comprises a schedule module, a timing module, and a network process module. The schedule module is configured to store schedule information. The timing module is configured to generate time information. The network process module is coupled to the schedule module and the timing module, and configured to connect to the server to get time signal via the network according to the schedule information and timing information in a specific time.