Camera Synchronization Control Using Time-Series Data Exchange
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Solution Overview
Problem
Existing methods for synchronizing the start and end of shooting between multiple cameras require a synchronization signal generator and a client PC, increasing installation complexity and cost, and are inefficient with wireless communication due to significant delays.
Innovation Solution
An information processing device that controls the reception of time-series data from multiple devices based on local time, determining and reporting start or end timing for synchronized recording, eliminating the need for additional hardware and minimizing communication delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a synchronization signal generator and client PC are used to synchronize shooting between multiple cameras, then synchronization precision is improved, but device complexity and installation cost increase
Solution Approach 1:
The patent extracts the synchronization control function from external dedicated devices (synchronization signal generator and client PC) and relocates it to the information processing devices themselves. Each information processing device independently determines its own start and end timing based on received first time-series data, eliminating the need for separate synchronization hardware and reducing overall system complexity while maintaining synchronization precision.
Solution Approach 2:
Each information processing device performs self-synchronization by autonomously determining its recording timing based on the first time-series data received from other devices. This self-service approach eliminates dependency on external synchronization controllers, reducing device complexity and installation requirements while achieving precise synchronization across multiple devices.
2Measurement precision
If a synchronization signal is input to each camera without delay, then synchronization precision is improved, but ease of operation deteriorates due to inability to use wireless communication
Solution Approach 1:
The patent replaces the mechanical/electrical synchronization signal transmission system with an information-based system using time-series data exchange. Instead of inputting synchronization signals through wired connections, devices exchange first time-series data and acquisition times through communication interfaces (including wireless), maintaining synchronization precision while enabling flexible wireless operation.
Solution Approach 2:
The first time-series data and acquisition times serve as intermediaries for synchronization. Rather than directly transmitting synchronization commands, devices share their acquired time-series data and timing information, allowing each device to independently calculate and determine its recording timing, thereby enabling wireless communication while maintaining precision.
3Measurement precision
If synchronization processing is performed after receiving all time-series data, then measurement precision is improved, but loss of time increases
Solution Approach 1:
Devices perform preliminary acquisition of first time-series data and acquisition times during the actual shooting process, rather than waiting until all data is collected. This preliminary action allows synchronization timing to be determined during or immediately after shooting, reducing post-processing time while maintaining the precision benefits of comprehensive data analysis.
Solution Approach 2:
The synchronization process is integrated continuously with the data acquisition process. As first time-series data is received and stored, the corresponding acquisition times are simultaneously recorded and processed. This continuous action eliminates idle waiting time between data collection and synchronization processing, reducing overall processing time while maintaining precision.
Data Source
AI summary
The present technology relates to an information processing device, an information processing method, a program, and an information processing system that make it possible to synchronize recording of time-series data acquired by a plurality of information processing devices. An information processing terminal includes a reception control unit configured to control reception of first time-series data acquired by a plurality of cameras and acquisition times of the first time-series data based on local time, which is time in each of the cameras, and a synchronization control unit configured to determine, on the basis of the first time-series data from the plurality of cameras, start timing or end timing of recording of second time-series data acquired by the plurality of cameras. The present technology can be applied to, for example, a shooting system that performs shooting with a plurality of cameras.