Video Signal Duty-Ratio Correction During Blanking Periods
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies face challenges in achieving high-speed data processing due to the need for separate idle periods for duty ratio adjustment and the lack of clarity in adjusting duty ratios, which can fluctuate with changes in the use environment, leading to data transfer errors and increased power consumption.
Innovation Solution
An information processing system that transmits adjustment pulse signals during blanking periods, detects deviations in duty ratios, and corrects them using a correction unit to achieve a predetermined value, eliminating the need for idle periods and allowing for continuous duty ratio adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a separate idle period is provided for duty ratio adjustment, then duty ratio can be adjusted, but high-speed data processing becomes difficult
Solution Approach 1:
The patent combines duty ratio adjustment with the blanking period of video data transmission. The adjustment pulse signal is transmitted during the blanking period that is already part of the video data transmission cycle, eliminating the need for a separate idle period. This merging of adjustment operation with existing transmission timing enables high-speed data processing while maintaining duty ratio accuracy.
Solution Approach 2:
The patent performs duty ratio adjustment in advance during the blanking period before the main video data transmission begins. By detecting the duty ratio of the adjustment pulse signal and correcting it beforehand, the system ensures accurate duty ratio without interrupting or slowing down the subsequent high-speed data transmission process.
2Adaptability or versatility
If duty ratio is adjusted frequently to adapt to environment changes, then appropriate duty ratio can be acquired, but data transfer errors increase and power consumption increases
Solution Approach 1:
The patent implements a feedback mechanism where the detection unit continuously monitors the duty ratio of the adjustment pulse signal, and the adjustment unit corrects the duty ratio based on detection information. This closed-loop feedback system adapts to environmental changes while maintaining data transfer reliability by ensuring the duty ratio remains within acceptable ranges.
Solution Approach 2:
The patent adjusts the duty ratio periodically during blanking periods rather than continuously. This periodic adjustment allows the system to adapt to environmental changes at appropriate intervals without causing excessive data transfer errors or power consumption, as adjustments are made during low-activity periods when video data transmission is not occurring.
3Manufacturing precision
If separate idle periods and additional registers are used for duty ratio adjustment, then duty ratio can be controlled, but device size increases
Solution Approach 1:
The patent makes the blanking period serve multiple functions: it is both part of the video data transmission cycle and the time window for duty ratio adjustment. The transmission unit transmits both video data and adjustment pulse signals during this period, eliminating the need for separate idle periods and additional dedicated hardware for duty ratio adjustment.
Data Source
AI summary
An information processing system according to an embodiment of the present disclosure includes: a transmission unit that transmits an adjustment pulse signal during a blanking period related to video data; a detection unit that detects that a duty ratio of the adjustment pulse signal transmitted by the transmission unit is not a predetermined value; an adjustment unit that acquires a correction value in such a manner that the duty ratio of the adjustment pulse signal becomes the predetermined value in a case where the detection unit detects that the duty ratio of the adjustment pulse signal is not the predetermined value; and a correction unit that corrects a duty ratio of a pulse signal related to the video data on the basis of the correction value acquired by the adjustment unit.