Geospatial Media Recording System Ultrasonic GPS Embedding
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Solution Overview
Problem
Conventional recording systems face challenges in embedding global positioning data continuously and securely within video or audio streams, particularly at frequencies outside human audible range, and in maintaining this data during playback and transcoding without loss.
Innovation Solution
A geospatial media recording system that receives global positioning signals, video streams, and audio streams, and encodes the global positioning data into the video or audio streams at high frequencies outside human audible range, allowing for continuous embedding and retrieval of location coordinates with associated metadata.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If global positioning data is embedded in the audible range of human hearing, then the data can be easily retrieved and played back, but background noise is generated during playback
Solution Approach 1:
The patent changes the frequency parameter of embedded audio data from the audible range to the ultrasonic range (above 20kHz). This allows GPS data to be embedded in audio streams without generating perceptible background noise during playback, while still enabling reliable retrieval through digital processing
2Ease of manufacture
If attribute data is located at the beginning or end of the data stream, then the embedding process is simple, but the attribute data is lost when data stream segments are excised
Solution Approach 1:
The patent segments the GPS data into multiple frames that are distributed throughout the entire data stream rather than concentrated at the beginning or end. Each frame contains a portion of the GPS information, ensuring that even if segments are excised, the remaining segments can still reconstruct the complete attribute data
Solution Approach 2:
The patent embeds GPS data continuously throughout the entire data stream rather than only at discrete points. This continuous embedding ensures that attribute data is preserved even when portions of the stream are removed, as the data is distributed across all segments
3Ease of operation
If conventional attribute data embedding methods are used, then the playback process is straightforward, but the attribute data is lost when transcoded
Solution Approach 1:
The patent embeds GPS attribute data within the audio stream itself by modulating the audio signal with the GPS information. This nested structure allows the attribute data to be carried within the media stream, making it resistant to loss during transcoding operations while maintaining straightforward playback through dedicated retrieval software
4Device complexity
If global positioning data is not continuously embedded at intervals, then the data stream processing is simpler, but real-time location tracking is not achieved
Solution Approach 1:
The patent implements periodic embedding of GPS data frames at regular intervals throughout the data stream. This periodic structure provides continuous location tracking information without excessive complexity, as the regular intervals allow for efficient parsing and processing while maintaining real-time tracking precision
Data Source
AI summary
A computer implemented geospatial media recording system which receives a global positioning signal from a global positioning system, a video stream from a video recorder and an audio stream from an audio recorder and encodes the global positioning system signal as global positioning data continuously embedded at intervals in the video stream or the audio stream at a frequency at the upper end or outside of the human audible range as a combined data stream which by operation of a geospatial media program can be concurrently displayed as a video in a first display area with a geospatial representation in second display area on a display surface with a plurality of coordinate location indicators located in the geospatial representation each at the coordinate location associated with the global positioning data embedded in the video.