Light Source Driver Register Storage Optimization
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Solution Overview
Problem
In display apparatuses using the local dimming method, increasing the number of local dimming blocks to reduce power consumption and enhance response time leads to a significant increase in storage requirements for light source intensity and delay values, inefficiently utilizing the register storage area of the light source driver.
Innovation Solution
A light source apparatus that determines the delay value of the light source driving signal using a scan delay value varied according to the scan blocks and a delay parameter not varied by the scan blocks, allowing efficient storage in the register by storing the light source intensity value, scan delay value, and delay parameter in specific bit allocations, thereby optimizing the register size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the number of local dimming blocks is increased to reduce power consumption and enhance response time, then the power consumption is reduced and response time is enhanced, but the storage area of the register increases significantly
Solution Approach 1:
The delay value is segmented into two parts: a scan delay value that varies according to scan blocks and a delay parameter that is common to all scan blocks. This segmentation allows the common delay parameter to be stored once in the register rather than replicating full delay values for each channel, significantly reducing storage requirements while enabling a larger number of local dimming blocks
Solution Approach 2:
The delay parameter serves as a universal value that is commonly applied across multiple scan blocks and channels. By using this universal parameter combined with scan-specific delay values, the system can control a large number of local dimming blocks without proportionally increasing register storage requirements, thus supporting reduced power consumption and enhanced response time with efficient resource utilization
2Loss of time
If the number of local dimming blocks is increased to enhance response time, then the response time is enhanced, but the storage area of the register increases significantly
Solution Approach 1:
The delay value is segmented into a scan delay value specific to each scan block and a common delay parameter. This segmentation reduces the storage burden in the register, allowing for more channels and local dimming blocks to be supported, thereby enhancing response time without linearly increasing storage requirements
Solution Approach 2:
The system changes the parameter representation from storing complete delay values for each channel to storing a combination of scan delay values and a common delay parameter. This parameter transformation enables the system to support a higher number of local dimming blocks with reduced register storage, facilitating faster response times
Data Source
AI summary
A light source apparatus includes a light source and a light source driver. The light source includes a plurality of scan blocks. Each scan block includes a plurality of local dimming blocks. The light source driver includes a plurality of channels configured to output light source driving signals to the plurality of local dimming blocks. The light source driving signal includes a light source intensity value representing a light intensity of a local dimming block from among the plurality of local dimming blocks and a delay value representing a degree of a delay of the local dimming block. The delay value is determined by a scan delay value varied according to the plurality of scan blocks and a delay parameter.