Elevator Monitoring Encoding Separate Image Data
Solution Overview
Problem
Existing elevator monitoring systems overlay elevator information on the in-car image, making it complicated to view and requiring a dedicated means to relate image data and elevator information, which is not efficient.
Innovation Solution
An elevator monitoring apparatus that encodes real-time elevator images and information into bit strings using JPEG or MPEG4 rules, ensuring the encoded bit strings are consecutive and can be decoded separately without overlaying on each other, eliminating the need for a dedicated means to relate image data and elevator information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If elevator information is overlaid on the in-car image, then both pieces of information can be displayed simultaneously, but the in-car image becomes complicated to see and portions of it are concealed
Solution Approach 1:
The patent divides the display content into separate segments: the in-car image and the elevator information are encoded into consecutive but distinct areas within the encoded bit string data. During decoding, these segments are separated and displayed in different regions of the display device, preventing overlay and concealment while maintaining simultaneous visibility of both information types.
2Reliability
If a dedicated means is provided to relate image data and elevator information, then accurate correlation can be achieved, but the device arrangement becomes complex
Solution Approach 1:
The patent merges the image data and elevator information into a single encoded bit string data structure with consecutive areas. This unified encoding approach eliminates the need for separate storage and correlation mechanisms (such as clock devices or separate recording means), simplifying the device arrangement while maintaining reliable correlation through the sequential structure of the encoded data.
3Reliability
If separate storage means are used for image data and elevator information, then data integrity is maintained, but additional means for relating the data are required
Solution Approach 1:
The patent combines separate storage of image data and elevator information into a single encoded bit string data structure. The encoding process maintains data integrity through structured formatting with distinct consecutive areas for each data type, while eliminating the need for separate storage devices and correlation mechanisms, thus reducing overall device complexity.
Data Source
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AI summary
An elevator monitoring apparatus 1000 includes an encoding device 100. An encoder 103 of the encoding device 100 inputs, from a frame buffer 102, a digital image signal 4 which is an image sensed by a camera 140 and which is an in-car image, digitized by an A/D converter 101, of an elevator. Simultaneously, the encoder 103 inputs, from an elevator control device 130, elevator information 3 which is a digital signal indicating an operating state of the elevator. The encoder 103 encodes the digital image signal 4 into a bit string in accordance with an image encoding rule such as MPEG4, and encodes the elevator information 3 into a bit string in accordance with a predetermined elevator information encoding rule. The encoder 103 generates encoded bit string data which includes the bit string of the digital image signal 4 and the bit string of the elevator information 3 and in which the bit string of the digital image signal and the bit string of the elevator information are related to each other, and outputs the generated encoded bit string data to a decoding device 110.