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US 2016/0104401 A1Published application
Apparatus and method for preventing image display defects in a display device
AssigneeMagnaChip Semiconductor, Ltd.
InventorsJae Hong KO, Shin YOON, Byung Jae NAM, Chang Ho AHN, Sang Hyun PARK
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Abstract
An apparatus and a method that quickly detect an error that may occur due to an external noise occurrence during display of image data on a screen of an image display device, and that control a strobe signal output to prevent a screen defect from being displayed on the display device screen.
Claims16
An apparatus for preventing an abnormal screen display, comprising:
- a separator configured to separate a clock signal and a data signal from a clock embedded signal;
- a first latch that latches the data signal;
- a lock detector that receives the clock signal and outputs a lock signal at a predetermined level after comparing an Nth clock waveform and an N−1th clock waveform of the clock signal;
- a control logic unit that selectively outputs a strobe signal based on the predetermined level of the lock signal;
- a second latch that latches the data signal that is latched in the first latch based on the strobe signal;
- and,
- an output section that outputs the data latched in the second latch as a panel driver signal.
4 more elements
An apparatus for preventing an abnormal screen display, comprising:
- a noise signal detector that detects a noise occurrence during driving of an image display device;
- and,
- a display driver IC that does not output a strobe signal for a scan line that includes the noise occurrence.
A method for preventing display of an abnormal screen, the method comprising:
- separating a data signal and a clock signal from a clock embedded signal;
- latching the data signal every scan line based on a strobe signal;
- detecting a noise occurrence based on the clock signal;
- and,
- outputting the strobe signal based on the clock signal,
- wherein the strobe signal is prevented from being output when the noise occurrence is detected.
3 more elements
Dependencies are inferred from the claim text.