Loading patent…
AssigneeCambridge University Technical Services Limited
InventorsNicholas A. Lawrence, Timothy D. Wilkinson, William A. Crossland
Estimating the term…
A display device has a number of pixels to display an image. A first set of electrodes and a second set of electrodes are provided. To display an image in accordance with image data, the first and second sets of electrodes are addressed with a first set of drive signals and a second set of drive signals respectively in order to drive the pixels of the display device. The first set of drive signals is predefined. The image data is compressed. The second set of drive signals is obtained from the compressed image data.
A method of driving a display device to display an image thereon in accordance with image data, the display device having a first set of electrodes and a second set of electrodes which are addressed with a first set of drive signals and a second set of drive signals respectively in order to drive pixels of the display device, the first set of drive signals being predefined, the image data being compressed, the method comprising:
Apparatus for driving a display device to display an image thereon in accordance with image data, the display device having a first set of electrodes and a second set of electrodes which are addressed with a first set of drive signals and a second set of drive signals respectively in order to drive pixels of the display device, the first set of drive signals being predefined, the image data being compressed, the apparatus comprising:
The use of image compression matrices (of the type used in compression standards such as JPEG, JPEG2000, MPEG-1, MPEG-2 and MPEG-4) in the generation of addressing signals for addressing the pixels of a display device.
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
Using a passive matrix: using active addressing
Using sub-frames: the sub-frames having all the same time duration
Aspects of display data processing: handling of images in compressed format, e.g. JPEG, MPEG
Arrangements or circuits for control of indicating devices using static means to
Term end not estimated
1. Field of Invention
The present invention relates to a method of and apparatus for driving a display device.
2. Discussion of Related Art
Embodiments of the present invention will now be described by way of example with reference to the accompanying drawings, in which:
FIG. 1 shows schematically prior art matrix addressing;
FIG. 2 shows schematically a graphical representation of how the column signal matrix is generated as a function of the original image matrix and the row matrix in the prior art;
There will first be given a description of multiple line addressing as applied to passive matrix displays. There will then be given a description of an example of a new architecture for displays receiving compressed image data in accordance with an embodiment of the present invention, this description including a discussion of image compression techniques. Whilst the description is principally given in the context of passive matrix display devices, the principles of the present invention may also be applied to active matrix display devices.
Multiple Line Addressing (MLA)
Background