Display Device Phase Adjustment via Packet Timing Measurement

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Solution Overview

Problem

Conventional display systems face challenges in maintaining synchronization with image capturing devices while minimizing the increase in transmission data, especially when packet transmission is irregular or occurs through large-scale networks, due to the need for time information insertion and relative delay fluctuation calculations.

Innovation Solution

A display device and system that includes a reception unit, measurement unit, determination unit, and processing unit to measure and adjust the reception timing of specified packets, allowing for phase adjustment of the display signal without increasing the amount of transmission data, by detecting retransmissions and changes in packet reception intervals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If time information is inserted into packets for fluctuation time measurement, then phase adjustment accuracy is improved, but the amount of transmission data increases

Engineering Contradiction:

Improvephase adjustment accuracyVSAvoidamount of transmission data

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent extracts only the necessary timing information (start timing and end timing of image capturing operations) without inserting complete time information into every packet. The reception side calculates relative delay fluctuation times based on these extracted timing markers, achieving phase adjustment without the data overhead of full time information in all packets.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces 'relative delay fluctuation times' as an intermediary parameter. Instead of using absolute time information directly in packets, the system calculates relative delay fluctuation times based on the difference between transmission timing and reception timing, then uses these relative values for phase adjustment. This intermediary approach reduces data requirements while maintaining adjustment accuracy.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If conventional time information insertion methods are used, then synchronization is achieved, but transmission data amount increases significantly

Engineering Contradiction:

ImprovesynchronizationVSAvoidtransmission data amount

Core Design Contradiction:

Stability of the object's compositionVSQuantity of substance

Solution Approach 1:

The patent applies partial action by inserting time information only at specific intervals (start timing and end timing of image capturing operations) rather than in every packet. This selective timing information insertion maintains sufficient synchronization accuracy while significantly reducing the overall amount of transmission data compared to conventional methods.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent changes the parameter representation from absolute time information to relative delay fluctuation times. By calculating the difference between transmission timing and reception timing, and using these relative values for phase adjustment, the system achieves synchronization with reduced data requirements. The parameter transformation from absolute to relative timing is key to reducing transmission data while maintaining sync.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If packets are transmitted through large scale networks with irregular transmission, then flexibility is improved, but time information becomes less effective

Engineering Contradiction:

Improvetransmission flexibilityVSAvoidtime information effectiveness

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent makes the timing measurement dynamic by calculating relative delay fluctuation times based on actual reception timing differences. Instead of relying on fixed or pre-calculated time information, the system continuously measures the difference between transmission and reception times, adapts to irregular transmission patterns, and adjusts phase accordingly. This dynamic approach maintains effectiveness even under flexible, irregular transmission conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements feedback by measuring actual reception timing, calculating relative delay fluctuation times based on the difference between transmission and reception timing, and using these feedback values to adjust the display phase. This closed-loop feedback mechanism allows the system to adapt to irregular transmission patterns and maintain synchronization effectiveness regardless of network conditions.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS9055225B2Display device and display system for performing a phase adjustment for a packet

Publication Date: 2015.06.09 OLYMPUS CORPORATION(JP)

AI summary

Provided is a display device that processes images in a set cycle, creates image data for each frame or field and that has: a receiver that receives transmitted data from an imaging device that encodes image data as packets, creates transmission data and transmits said transmission data; a display processing unit that generates a display signal for display from the transmitted data; a measuring unit that measures the reception timing of specific packets among the transmitted data; a determination unit that determines the reception state of the specific packets and, based on the results of this determination, determines whether or not to use the received timing; and a processing unit that uses the reception timing and phase regulates the display signal if the determination unit determines to use the reception timing.