Liquid crystal panel driving apparatus
AssigneeLapis Semiconductor Co., Ltd.
InventorATSUSHI YUSA
Life of this patent
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Abstract
A liquid crystal panel driving apparatus that produces a normal display without damaging the liquid crystal panel even when each of a plurality of timing controllers receives an abnormal display data signal. In an exemplary apparatus, each of the timing controllers transmits an abnormality detection signal, which is generated by detecting an abnormality in the display data signal, to other timing controllers via an abnormality detection line, and each of the timing controllers outputs image data associated with the abnormality detection signal stored in an image data memory.
Claims7
A liquid crystal panel driving apparatus comprising:
- a plurality of timing controllers, each of the plurality of the timing controllers including a line memory for storing image data included in a received display data signal and an output controller unit that provides a liquid crystal panel driver with a driving signal based on the image data stored in the line memory and the display data signal;
- wherein each of the plurality of the timing controllers includes
- an abnormality detection unit for outputting an abnormality detection signal when an abnormality in the display data signal is detected,
- an abnormality detection signal transmission unit for transmitting the abnormality detection signal to at least one other of the timing controllers,
- an image data memory for storing image data associated with the abnormality detection signal, and
- an image switching unit that provides the output control unit with the image data associated with the abnormality detection signal stored in the image data memory instead of the image data stored in the line memory when an abnormality is detected.
Dependencies are inferred from the claim text.