Image Reacquisition Bandwidth Allocation by Location Change Rate
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Solution Overview
Problem
Existing network-based search applications often provide stale images due to unchanged landscapes, leading to inefficient bandwidth usage as some information sources change frequently while others remain static, making it costly to maintain up-to-date imagery across all locations.
Innovation Solution
Allocating observation bandwidth based on the rate of change and importance value of each location, grouping locations with similar characteristics together to optimize the reacquisition of images, ensuring that frequently changing and high-importance areas receive more frequent updates while less important or static areas receive fewer updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuously observing all information sources to detect changes, then current image information is maintained, but bandwidth resources are inefficiently used
Solution Approach 1:
The patent applies local quality by differentiating observation frequencies based on location-specific characteristics. Each location is assigned an importance value and rate of change parameters, causing the system to observe high-importance locations frequently while reducing or skipping observations for low-importance locations. This localized differentiation resolves the contradiction by maintaining image currentness where needed while conserving bandwidth resources where changes are unlikely or less important.
Solution Approach 2:
The patent changes the observation parameter (frequency) dynamically based on calculated parameters (importance value and rate of change). The system adjusts observation intensity from continuous to periodic or to skipped observations based on the specific characteristics of each location, thereby optimizing the balance between maintaining current images and efficient bandwidth usage.
2Reliability
If allocating bandwidth to refresh all information sources, then up-to-date images are provided, but resource expenditure increases
Solution Approach 1:
The patent implements local quality by assigning different refresh frequencies to different locations based on their importance values and rates of change. High-importance locations receive frequent refreshes to maintain currentness, while low-importance locations receive reduced or no refreshes, thereby reducing overall bandwidth consumption while maintaining image currentness where most needed.
Solution Approach 2:
The patent applies partial action by selectively refreshing only the portion of information sources that are most likely to change or are most important to users. Instead of uniformly refreshing all locations, the system performs partial refreshes focused on high-value targets, reducing total resource expenditure while maintaining adequate currentness for critical locations.
3Reliability
If observing information sources that change frequently, then current images are obtained, but observation resources are wasted on rarely modified sources
Solution Approach 1:
The patent applies local quality by tailoring observation intensity to the specific characteristics of each location. Locations with high rates of change and high importance values receive frequent observations to maintain currentness, while locations with low rates of change or low importance receive reduced observation frequency, thereby improving overall observation efficiency by avoiding wasted resources on stable or unimportant locations.
Data Source
AI summary
Observation bandwidth is allocated to an image provider such that an image may be reacquired while optimizing the utility of the image provider's observations. The observation bandwidth is allocated with reference to the rate of change associated with a location where images are acquired by the image provider and to an importance value associated with the location. The rate of change identifies how frequently the location is subject to modifications. The importance value indicates a likelihood that users are concerned with receiving current image data at the location. Different locations having substantially the same rate of change and importance value are grouped together. The same observation bandwidth is allocated for the image providers at locations that are grouped together such that each image provider may reacquire images at the allocated observation bandwidth.