Strip-Shaped Display Brightness Control for Retail Video Playback
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Solution Overview
Problem
In supermarkets, strip-shaped screens are typically kept on throughout the day to ensure continuous video playback, leading to high energy consumption and resource wastage since they are not all needed when there are only a few customers.
Innovation Solution
A video playback apparatus comprising strip-shaped displays and image sensors, where a processor dynamically controls the brightness and turn-on/off of the displays based on user presence and direction, ensuring only necessary screens are active, reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all strip-shaped screens are kept on to ensure continuous video playback, then video continuity is improved, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by transitioning from a static state where all screens are permanently on to a dynamic state where screen activation is adjusted in real-time based on user presence detection. The system continuously monitors user location and dynamically activates only the screens in the user's current viewing area, resolving the contradiction between maintaining video continuity and reducing energy consumption.
Solution Approach 2:
The patent implements local quality by making different parts of the screen system have different operational states based on local user presence. Instead of uniform activation across all screens, the system activates only the local screens where users are currently positioned, allowing video continuity in active areas while saving energy in inactive areas.
2Adaptability or versatility
If all strip-shaped screens are turned on, then video playback coverage is improved, but resource wastage increases
Solution Approach 1:
The patent applies segmentation by dividing the screen system into independent controllable segments based on user presence zones. Each screen or screen group can be independently activated or deactivated, allowing the system to provide comprehensive video playback coverage where needed while avoiding resource wastage in areas without users.
3Use of energy by stationary object
If screens are activated based on user presence, then energy consumption is reduced, but system complexity increases
Solution Approach 1:
The patent implements feedback by using sensors to detect user presence and location, then using this information to control screen activation. The system continuously receives feedback from sensors about user positions and adjusts screen states accordingly, creating a closed-loop control system that reduces energy consumption while managing complexity through automated decision-making.
4Adaptability or versatility
If multiple image sensors are arranged to track user movement, then user following capability is improved, but device complexity increases
Solution Approach 1:
The patent applies dimensionality change by arranging image sensors in a spatial distribution pattern (first direction and second direction) rather than a single linear arrangement. This multi-dimensional sensor layout enables comprehensive user tracking and following capability while distributing the complexity across multiple simple sensor units rather than one complex sensor system.
Data Source
AI summary
The embodiments of the present disclosure disclose a video playback apparatus and a video playback method. The video playback apparatus includes: an image sensor, a plurality of strip-shaped displays arranged in a first direction, and a processor connected to each of the strip-shaped displays and the image sensor, respectively, wherein the strip-shaped displays are configured to display information for associated items; the image sensor is configured to acquire image information for a user who moves in the first direction and a direction opposite to the first direction and browses the associated items; and the processor is configured to dynamically control display brightness of the plurality of strip-shaped displays according to the image information for the user, wherein brightness of one of the strip-shaped displays close to the user is greater than brightness of another one of the strip-shaped displays away from the user.