Gamma Tab Voltage Generator with Dynamic Buffer Segmentation
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Solution Overview
Problem
Existing gamma integrated circuits (ICs) for flat panel displays have unnecessarily large current capacity, leading to increased power consumption, heat generation, and size, as well as reduced extensibility and compatibility due to fixed buffer capacity, making them inefficient for adapting to changes in display panel resolution.
Innovation Solution
A programmable gamma tab voltage generator with a data calculator to determine buffer selection and combination information, digital-to-analog converters to generate gamma tab voltages, and a buffer selector and combiner to dynamically adjust buffer connections based on required current capacities, allowing for adaptive current allocation and reduced buffer size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If buffers are designed with maximum current capacity to generate maximum gamma tab voltage, then the gamma IC can supply sufficient current for high-resolution displays, but power consumption and heat generation increase
Solution Approach 1:
The patent implements dynamic buffer capacity adjustment by configuring buffers to operate at different current capacities based on the actual display resolution requirements. The buffer capacity is changed from fixed to variable, allowing the system to adapt to different resolutions (e.g., HD, FHD, QHD) without maintaining maximum capacity continuously, thus reducing power consumption when lower current is sufficient.
Solution Approach 2:
The patent changes the operating parameters of buffers by adjusting their current capacity dynamically. Different buffer groups are activated with different current capacities (first, second, or third current capacities) depending on the gamma tab voltage generation requirements, allowing the system to optimize power consumption while maintaining the ability to generate maximum voltage when needed.
2Power
If buffers are designed with maximum current capacity, then the gamma IC can handle high-resolution displays, but the size of the gamma IC increases
Solution Approach 1:
The patent divides the buffer system into multiple buffer groups (first, second, third buffer groups) with different current capacities. Instead of using a single large buffer for all scenarios, the system segments buffers into smaller functional units that can be selectively activated. This segmentation allows the gamma IC to achieve maximum current capacity when needed while reducing the active buffer count and overall IC size during normal operation.
Solution Approach 2:
The patent implements dynamic buffer capacity adjustment by configuring buffers to operate at different current capacities based on the actual display resolution requirements. The buffer capacity is changed from fixed to variable, allowing the system to adapt to different resolutions (e.g., HD, FHD, QHD) without maintaining maximum capacity continuously, thus reducing power consumption when lower current is sufficient.
3Device complexity
If the gamma IC has fixed buffer capacity, then the design is simpler, but extensibility and compatibility with different display resolutions are reduced
Solution Approach 1:
The patent implements dynamic buffer capacity adjustment by configuring buffers to operate at different current capacities based on the actual display resolution requirements. The buffer capacity is changed from fixed to variable, allowing the system to adapt to different resolutions (e.g., HD, FHD, QHD) without maintaining maximum capacity continuously, thus reducing power consumption when lower current is sufficient.
Solution Approach 2:
The patent designs the buffer system to serve multiple functions across different display resolutions. The same buffer infrastructure can be configured to support various resolutions (HD, FHD, QHD) by dynamically adjusting which buffer groups are active and at what current capacity. This multi-functionality provides extensibility without requiring separate hardware designs for each resolution.
4Power
If buffers operate at maximum current capacity, then maximum gamma tab voltage can be generated, but heat generation increases
Solution Approach 1:
The patent implements dynamic buffer capacity adjustment by configuring buffers to operate at different current capacities based on the actual display resolution requirements. The buffer capacity is changed from fixed to variable, allowing the system to adapt to different resolutions (e.g., HD, FHD, QHD) without maintaining maximum capacity continuously, thus reducing power consumption when lower current is sufficient.
Solution Approach 2:
The patent changes the operating parameters of buffers by adjusting their current capacity dynamically. Different buffer groups are activated with different current capacities (first, second, or third current capacities) depending on the gamma tab voltage generation requirements, allowing the system to optimize power consumption while maintaining the ability to generate maximum voltage when needed.
Data Source
AI summary
A gamma tab voltage generator includes a plurality of, a data calculator configured to generate a buffer selection information and a buffer combination information based on a current capacity of buffer, a plurality of digital-to-analog converters configured to generate gamma tab voltages based on a gamma tab voltage information, a buffer selector configured to connect input terminals of the buffers selected based on the buffer selection information to output terminals of the digital-to-analog converters, and a buffer combiner configured to connect output terminals of the selected buffers to one another in response to the buffer combination information.