Imaging Element Driving Apparatus for High Frame Rate Synchronization
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Solution Overview
Problem
Existing techniques face difficulties in adjusting frame rates and number of lines for imaging elements to meet user-desired settings, particularly at high frame rates, leading to potential image quality deterioration and inability to read out images as desired.
Innovation Solution
A driving apparatus and method that acquires parameters for an imaging element to generate specific timings for horizontal synchronization periods, ensuring they differ only by a predetermined number of clocks, synchronizing with vertical synchronization periods to match the timing of image output and completion, allowing for user-defined action modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the frame rate is adjusted to high values (e.g., 239.76 Hz) using conventional techniques, then the frame rate requirement is met, but the horizontal synchronization period becomes non-integer (206.25 clocks), violating the third condition and causing image quality deterioration
Solution Approach 1:
The patent dynamically adjusts the number of horizontal synchronization periods within the vertical synchronization period based on the desired frame rate. For 239.76 Hz, it uses 1092 horizontal periods instead of the conventional 1080, allowing the horizontal synchronization period to be exactly 206 clocks (integer) while meeting the frame rate requirement. This dynamic adjustment resolves the contradiction between high frame rate and integer synchronization period.
Solution Approach 2:
The patent changes the parameter of horizontal synchronization period duration from the conventional fixed value to a variable value that can be precisely controlled. By setting the horizontal synchronization period to exactly 206 clocks (an integer) and adjusting the number of periods to 1092, it achieves both high frame rate (239.76 Hz) and integer synchronization period, resolving the technical contradiction.
2Quantity of substance
If the number of horizontal synchronization periods is reduced to meet the fourth condition (1080 or more), then the line count requirement is met, but the horizontal synchronization period increases beyond 200 clocks, potentially violating the second condition and causing image quality deterioration
Solution Approach 1:
The patent precisely controls the horizontal synchronization period duration as a parameter, setting it to exactly 206 clocks. By adjusting the number of horizontal synchronization periods to 1092, it satisfies both the fourth condition (≥1080 periods) and maintains the second condition (≥200 clocks per period), preventing image quality deterioration while meeting the line count requirement.
3Adaptability or versatility
If conventional adjustment techniques are used to meet user-desired action modes, then some parameters are satisfied, but multiple conditions (second, third, fourth conditions) cannot be simultaneously satisfied, leading to inability to read out images as desired
Solution Approach 1:
The patent dynamically calculates and adjusts the number of horizontal synchronization periods based on the user-desired action mode parameters (frame rate, number of lines). For example, for 239.76 Hz and 1080 lines, it calculates 1092 periods of 206 clocks each, ensuring all conditions are simultaneously satisfied. This dynamic adjustment enables reliable image readout while meeting user-desired action modes.
Solution Approach 2:
The patent implements a feedback mechanism where the driving apparatus calculates the required number of horizontal synchronization periods based on the desired frame rate and number of lines, then adjusts the synchronization signal generation accordingly. This feedback loop ensures that all conditions (second, third, fourth conditions) are simultaneously satisfied, enabling reliable image readout for user-desired action modes.
Data Source
AI summary
There is provided a driving apparatus which includes an acquisition section which acquires a parameter for driving an imaging element, which receives an optical image from a subject and outputs an imaging image as an electric signal, in an action mode which is desired by a user; a timing generation section which generates respective timings of the starting of each of a plurality of horizontal synchronization periods, where horizontal synchronization periods which are only different in terms of the number of clocks determined in advance are acquired in a mixed state, based on the parameter; and a driving control section which receives the optical image from the subject for each line which configures the imaging element by synchronizing the respective timings which are generated using the timing generation section.