Terminal Apparatus for Accurate Marking Timing in Video Recording
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Solution Overview
Problem
In existing video recording systems, cameramen find it difficult to operate a mark button with appropriate timing during photography, leading to ineffective use of the marking function.
Innovation Solution
A terminal apparatus with an operation unit, time clocking unit, and communication unit is used to transmit marking timing information to an external apparatus, allowing a third person to specify and input marking timing, enabling accurate marking in time-series data such as motion image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the cameraman operates the mark button during coverage, then the marking function can be used, but the marking timing is inaccurate because the cameraman cannot operate with appropriate timing while focusing on photographing
Solution Approach 1:
The patent introduces a separate marking operation device as an intermediary between the operator and the recording apparatus. This device has its own time clocking unit and communicates marking timing information to the recording apparatus, allowing a third person to operate marking without interfering with the cameraman's photographing work. The intermediary device resolves the contradiction by decoupling the marking operation from the cameraman's primary task.
2Reliability
If the cameraman focuses on photographing during coverage, then the quality of time-series data recording is improved, but the marking function becomes ineffective because the cameraman cannot operate the mark button
Solution Approach 1:
The patent segments the functions of the recording system into separate devices: one dedicated to time-series data recording (recording apparatus) and another dedicated to marking operation (marking operation device). This segmentation allows different persons to perform different functions simultaneously without interference, improving both photographing reliability and marking productivity.
Solution Approach 2:
The marking operation device has its own time clocking unit that independently clocks time and generates marking timing information without requiring the cameraman's intervention. This self-service capability allows the device to automatically determine marking positions based on its own time clocking, improving marking efficiency while the cameraman focuses on photographing.
3Measurement precision
If a separate terminal apparatus is used for marking operation, then marking timing accuracy is improved, but the device complexity increases
Solution Approach 1:
The terminal apparatus used for marking operation is designed with multi-functionality, serving both as a timing reference device and a marking operation device. It has a time clocking unit that can provide time information to both the recording apparatus and serve as the basis for marking operations, reducing the need for separate dedicated devices and simplifying the overall system structure.
Solution Approach 2:
The system implements feedback mechanisms where the terminal apparatus transmits marking timing information to the recording apparatus, which then uses this information to put marks at the specified positions in the recorded data. This feedback loop ensures accurate marking while maintaining system simplicity through standardized communication protocols.
Data Source
AI summary
A terminal apparatus includes an operation unit, a time clocking unit performing time clocking, a communication unit performing communication with an external apparatus, and a control unit. The control unit executes a time synchronization processing for clocked time synchronization with the external apparatus having a time clocking unit. The control unit also executes a time information acquisition processing to acquire clocked time information by the time clocking unit with a timing at which an operation is made on the operation unit. The control unit further executes a transmission control processing to control the time information acquired by the time information acquisition processing to be transmitted to the external apparatus through the communication unit.