Display Drive Frequency Switching for Continuous-Shooting Speed
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Solution Overview
Problem
Continuous-shooting photography speed in digital still cameras is limited by the display drive system, resulting in reduced frame rates when using the PAL system, as the timing of continuous-shooting must synchronize with the display drive system, leading to lower speeds such as 16.6 fps instead of the desired 20 fps.
Innovation Solution
The camera switches the drive frequency of the display panel in response to the photographing cycle of an image, allowing for continuous-shooting at a desired speed regardless of the display drive system by adjusting the display drive system to match the continuous-shooting speed, such as changing from the PAL system to the NTSC system when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display drive system is set to PAL system, then the display compatibility is improved, but the continuous-shooting speed lowers to 16.6 fps instead of the desired 20 fps
Solution Approach 1:
The patent applies dynamics by making the display drive system changeable rather than fixed. The control section dynamically switches between NTSC and PAL display drive systems based on the selected continuous-shooting speed, allowing the system to adapt its display characteristics to match the photographing requirements and achieve the desired shooting speed.
Solution Approach 2:
The patent changes the display drive system parameter (from PAL to NTSC) to resolve the contradiction. By switching the display drive system parameter, the camera can achieve 20 fps continuous shooting while maintaining proper display synchronization, thus improving productivity without sacrificing adaptability.
2Productivity
If the continuous-shooting speed is increased to 20 fps, then the productivity is improved, but the synchronization with display drive timing becomes difficult under PAL system
Solution Approach 1:
The patent changes the display drive system parameter from PAL to NTSC when 20 fps continuous shooting is selected. This parameter change enables proper synchronization between the photographing timing and display drive timing, as NTSC's 60 Hz refresh rate is compatible with 20 fps shooting (one photograph per 3rd frame), ensuring reliability of synchronization.
Solution Approach 2:
The system dynamically adjusts the display drive system based on the continuous-shooting speed setting. When high-speed shooting is required, the system switches to NTSC mode to ensure proper timing synchronization, making the synchronization mechanism adaptive rather than rigid.
Data Source
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AI summary
The present technology relates to an image processing device, an image processing method, and a program, which make it possible to perform continuous-shooting photography at a desired speed. A control section performs control for switching over a drive frequency of a display panel in response to a photographing cycle of an image. The present technology can be applied to, for example, an electronic device that includes a continuous-shooting photography function, such as a digital still camera, a digital video camera, and a smart phone.