Data Conversion Circuit for Grayscale Display on Color Panels

Solution Overview

Problem

Low-end microprocessors with limited transmission capability struggle to efficiently drive color displays for black-and-white/grayscale images due to the large data quantity required for color image data, leading to slow image displaying rates and increased costs when trying to replace them with high-end processors.

Innovation Solution

A driving circuit with a data conversion circuit that converts black-and-white/grayscale input data into color output data, comprising a separation unit, adjustment unit, and clock generator, allowing low-end microprocessors to drive color displays for displaying black-and-white/grayscale images without the need for high-end processors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If color display is used to display black-and-white/grayscale images, then image quality and visual appeal are improved, but data transmission requirements increase causing slow display rate with low-end microprocessors

Engineering Contradiction:

Improveimage qualityVSAvoiddisplay rate

Core Design Contradiction:

Illumination intensityVSProductivity

Solution Approach 1:

The patent changes the data format parameter from color (high bit depth) to grayscale (lower bit depth) while maintaining the same display hardware. The data conversion circuit transforms color image data into grayscale data, reducing the data transmission burden on low-end microprocessors while preserving acceptable image quality for black-and-white display purposes

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention extracts only the necessary luminance information from color data by converting to grayscale, discarding the chrominance components that are not needed for black-and-white display. This extraction process reduces data quantity while maintaining the essential visual information required for the display application

Inventive Principle:

Principle #2Taking out (Extraction)

2Productivity

If high-end microprocessor is used to transmit color image data, then transmission speed and display rate are improved, but overall cost increases

Engineering Contradiction:

Improvetransmission speedVSAvoidoverall cost

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The patent changes the data format parameter from color (high bit depth) to grayscale (lower bit depth) while maintaining the same display hardware. The data conversion circuit transforms color image data into grayscale data, reducing the data transmission burden on low-end microprocessors while preserving acceptable image quality for black-and-white display purposes

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention uses a cost-effective approach by employing low-end microprocessors with simplified data processing requirements. By converting color data to grayscale in the data conversion circuit, the system achieves acceptable performance with cheaper, less powerful processors, reducing overall manufacturing costs

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Productivity

If black-and-white/grayscale display is used, then data transmission requirements are reduced, but image quality and visual appeal deteriorate

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidimage quality

Core Design Contradiction:

ProductivityVSIllumination intensity

Solution Approach 1:

The patent changes the data format parameter from color (high bit depth) to grayscale (lower bit depth) while maintaining the same display hardware. The data conversion circuit transforms color image data into grayscale data, reducing the data transmission burden on low-end microprocessors while preserving acceptable image quality for black-and-white display purposes

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9761198B2Driving circuit for driving color display to display black-and-white/grayscale images and data conversion circuit thereof

Publication Date: 2017.09.12 SITRONIX TECH CORP

AI summary

The present invention provides a driving circuit for driving a color display to display black-and-white/grayscale images and comprises a data conversion circuit and a driver. The data conversion circuit receives input data transmitted by a microprocessor. The format of the input data is a black-and-white/grayscale format. The data conversion circuit converts the input data for producing output data. The format of the output data is a color format. The driver receives the output data and drives the color display to display the black-and-white/grayscale image. The driving circuit will convert the input data transmitted by the microprocessor with limited transmission capability and produce color output data for driving the color display to display the black-and-white/grayscale image. Accordingly, by using the driving circuit according to the present invention, an electronic device with limited transmission capability can work with the color display to display black-and-white/grayscale images.