Display Control Device for Smooth Needle Motion

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Solution Overview

Problem

Existing display control systems for moving objects, such as vehicles, often experience fluctuations in needle motion on meters due to asynchronous acquisition and display cycles, leading to an uncomfortable user experience, especially when the processing load varies.

Innovation Solution

A display control device that stores moving object information on a first cycle and generates image data on a second cycle longer than the first, calculating information corresponding to the generation start time of the N-th image data using information before and after the start time to ensure smooth motion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If linear interpolation is used to estimate information at display times, then the needle motion fluctuation is reduced when acquisition cycle is longer than display update cycle, but the method cannot be applied when display update cycle is longer than acquisition cycle

Engineering Contradiction:

Improveneedle motion smoothnessVSAvoidapplicability to different cycle relationships

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

Instead of estimating past information (interpolation), the patent calculates future information at display times by advancing the acquisition cycle information forward in time (extrapolation). This inverted temporal approach allows the method to work when display update cycle is longer than acquisition cycle, resolving the limitation of prior art.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent changes the calculation parameter from interpolation (estimating intermediate values) to extrapolation (calculating future values based on current trend). This parameter change in the mathematical approach enables the system to handle cases where display update cycle exceeds acquisition cycle, expanding adaptability while maintaining needle motion smoothness.

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If the display update cycle is extended beyond the acquisition cycle, then processing load is reduced, but needle motion fluctuation increases

Engineering Contradiction:

Improveprocessing loadVSAvoidneedle motion smoothness

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent performs preliminary calculation of the calculation coefficient based on the relationship between acquisition cycle and display update cycle. By pre-calculating how much to advance the information in time, the system can smoothly display information even with extended display update cycles, maintaining needle motion smoothness while reducing processing load.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces a calculation coefficient as an intermediary parameter that mediates between acquisition cycle information and display update cycle requirements. This coefficient acts as a bridge, allowing the system to translate acquisition information into appropriate display updates even when cycles are mismatched, thereby maintaining smooth needle motion with reduced processing frequency.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If information is calculated for the generation start time of the N-th image data using information before and after the start time, then smooth motion is achieved, but calculation complexity increases

Engineering Contradiction:

Improvemotion smoothnessVSAvoidcalculation process

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies partial action by calculating only the necessary calculation coefficient based on the cycle relationship, rather than performing full interpolation/extrapolation calculations for all parameters. This selective calculation approach achieves smooth needle motion while minimizing calculation complexity and processing overhead.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS10604012B2Display control device, display system, and display control method

Publication Date: 2020.03.31 ALPINE ELECTRONICS INC

AI summary

A display control device is connected to a display device, and the display control device includes a storage unit to store moving object information which is acquired on a first cycle in correlation with time information. A generation unit reads the moving object information stored in the storage unit and generates image data. The image data generated by the generation unit is displayed on a second cycle which is longer than the first cycle. The generation unit calculates the moving object information corresponding to a generation start time of the N-th generated image data on the basis of the moving object information which is stored in the storage unit at times before and after the generation start time and generates the (N+1)-th image data.