Controller circuit for liquid crystal matrix display devices
First Claim
1. A controller circuit for processing video data for a colour active matrix liquid crystal display device and having an input for video data, processing circuitry for processing the video data and an output from which the processed video data is provided for supply to a driver circuit of the display device, wherein the processing circuitry comprises gamma and colour correction circuits which include a Look-Up Table, and a motion blur reduction circuit for modifying the video data so as to reduce perceived blurring in moving images displayed on the display device and comprising a field store for video data and a Look-Up Table, and wherein the motion blur reduction circuit precedes the gamma and colour correction circuits.
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Accused Products
Abstract
A controller circuit (24) for processing video data for an active matrix liquid crystal display device has processing circuitry for performing correction functions on the input video data (D) prior to being supplied to the drive circuit (22) of the display device comprising gamma and color correction, and correction for reducing motion blur in the display picture. The correction circuits (35, 36) are organized such that correction for motion blur reduction (36) is carried out before the gamma and color corrections (35), which enables a beneficial decrease in semiconductor area required when implementing the circuitry in IC form through the size of field store (30) and LUT (32) components used for this function then being smaller. Gamma and color corrections are performed together using a single LUT. Correction for kickback may further be included, such correction preferably being arranged after the gamma and color corrections and using a separate LUT.
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Citations
5 Claims
- 1. A controller circuit for processing video data for a colour active matrix liquid crystal display device and having an input for video data, processing circuitry for processing the video data and an output from which the processed video data is provided for supply to a driver circuit of the display device, wherein the processing circuitry comprises gamma and colour correction circuits which include a Look-Up Table, and a motion blur reduction circuit for modifying the video data so as to reduce perceived blurring in moving images displayed on the display device and comprising a field store for video data and a Look-Up Table, and wherein the motion blur reduction circuit precedes the gamma and colour correction circuits.
Specification