Driving system for LCD apparatus and method thereof
First Claim
1. A driving system for a liquid crystal display (LCD) apparatus, comprising a data-latching circuit, a synchronous-signal separating module and a polarity-signal generator, the data-latching circuit being configured for separating input signals into RGB data and data-enable signals, the synchronous-signal separating module being configured for converting the data-enable signals into vertical synchronous signals and horizontal synchronous signals, wherein the driving system for the LCD apparatus further comprises a vertical synchronous-signal discriminator, a vertical synchronous-signal counter, a horizontal synchronous-signal discriminator and a data operator;
- the vertical synchronous-signal discriminator, the vertical synchronous-signal counter and the horizontal synchronous-signal discriminator are electrically coupled to the synchronous-signal separating module;
the vertical synchronous-signal discriminator sends out a start signal to the polarity-signal generator if it judges there are the vertical synchronous signals;
the vertical synchronous-signal counter is configured for accumulating an amount of the vertical synchronous signals and sending out an accumulated result to the data operator;
the horizontal synchronous-signal discriminator sends out a start signal to the data operator if it judges there are the horizontal synchronous signals; and
the data operator starts to operate after receiving the start signal sent out from the horizontal synchronous-signal discriminator, subtracts data of odd sub-pixels by data of even sub-pixels which are arranged in a horizontal line of the RGB data or subtracts data of the even sub-pixels by the odd sub-pixels, to obtain an Msum value, and then controls the polarity-signal generator to output polar-controlling signals corresponding to a scan line according to the Msum value and the accumulated result of the vertical synchronous-signal counter accumulating the amount of the vertical synchronous signals.
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Abstract
A driving system for a liquid crystal display apparatus and a method thereof are provided, the driving system comprises a data-latching circuit, a synchronous-signal separating module, a vertical synchronous-signal discriminator, a vertical synchronous-signal counter, a horizontal synchronous-signal discriminator, a data operator and a polarity-signal generator. The vertical synchronous-signal discriminator outputs a start signal to the polarity-signal generator when vertical synchronous signals exist. The vertical synchronous-signal counter accumulates an amount of the vertical synchronous signals, and outputs an accumulated result to the data operator. The horizontal synchronous-signal discriminator sends the start signal to the data operator. The data operator subtracts odd sub-pixel data from even sub-pixel data of RGB data in a horizontal line or subtracts the even sub-pixel date from the odd sub-pixel date to obtain an Msum value, and controls the polarity-signal generator output polar-controlling signals to scan lines according to the Msum value and the accumulated result.
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Citations
17 Claims
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1. A driving system for a liquid crystal display (LCD) apparatus, comprising a data-latching circuit, a synchronous-signal separating module and a polarity-signal generator, the data-latching circuit being configured for separating input signals into RGB data and data-enable signals, the synchronous-signal separating module being configured for converting the data-enable signals into vertical synchronous signals and horizontal synchronous signals, wherein the driving system for the LCD apparatus further comprises a vertical synchronous-signal discriminator, a vertical synchronous-signal counter, a horizontal synchronous-signal discriminator and a data operator;
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the vertical synchronous-signal discriminator, the vertical synchronous-signal counter and the horizontal synchronous-signal discriminator are electrically coupled to the synchronous-signal separating module; the vertical synchronous-signal discriminator sends out a start signal to the polarity-signal generator if it judges there are the vertical synchronous signals; the vertical synchronous-signal counter is configured for accumulating an amount of the vertical synchronous signals and sending out an accumulated result to the data operator; the horizontal synchronous-signal discriminator sends out a start signal to the data operator if it judges there are the horizontal synchronous signals; and the data operator starts to operate after receiving the start signal sent out from the horizontal synchronous-signal discriminator, subtracts data of odd sub-pixels by data of even sub-pixels which are arranged in a horizontal line of the RGB data or subtracts data of the even sub-pixels by the odd sub-pixels, to obtain an Msum value, and then controls the polarity-signal generator to output polar-controlling signals corresponding to a scan line according to the Msum value and the accumulated result of the vertical synchronous-signal counter accumulating the amount of the vertical synchronous signals. - View Dependent Claims (2, 3, 4, 5)
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6. A driving method for a liquid crystal display (LCD) apparatus comprising steps of:
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(1) employing a data-latching circuit to latch input signals and separating the input signals into RGB data and data-enable signals; (2) employing a synchronous-signal separating module to convert the data-enable signals into vertical synchronous signals and horizontal synchronous signals; (3) employing a vertical synchronous-signal discriminator to determine whether the vertical synchronous signals exist, and if the vertical synchronous signals exist, then performing step (4), otherwise returning to perform step (1); (4) starting a polarity-signal generator to operate, and employing a vertical synchronous-signal counter to accumulate an amount of the vertical synchronous signals, K =K +1; (5) employing a horizontal synchronous-signal discriminator to determine whether horizontal synchronous signals exist, if the horizontal synchronous signals exist, then performing step (6), otherwise returning to perform step (2); (6) starting a data operator to operate, and subtract data of odd sub-pixels by data of even sub-pixels which are arranged in a horizontal line of the RGB data or subtract data of the even sub-pixels by the odd sub-pixels, to obtain an Msum value, and determining polarity of corresponding scan lines according the Msum value and K; and (7) employing a polarity-signal generator to output polar-controlling signals according to a determination result of the data operator. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A driving system for a liquid crystal display (LCD) apparatus, wherein the driving system for the LCD apparatus comprises:
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a data-latching circuit, configured for separating input signals into RGB data and a data-enable signals; a synchronous-signal separating module, electrically coupled to the data-latching circuit, to convert the data-enable signals into vertical synchronous signals and horizontal synchronous signals; a vertical synchronous-signal discriminator, electrically coupled to the synchronous-signal separating module, to determine whether the vertical synchronous signals exist; a vertical synchronous-signal counter, electrically coupled to the vertical synchronous-signal discriminator, to accumulates an amount of the vertical synchronous signals and send out an accumulated result to the data operator; a horizontal synchronous-signal discriminator, configured for determining whether the horizontal synchronous signals exist, and sending out a start signal when the horizontal synchronous-signal discriminator determines the horizontal synchronous signals exist; a data operator, electrically coupled to the horizontal synchronous-signal discriminator, to start to operate after receiving the start signal sent out from the horizontal synchronous-signal discriminator, and subtract data of odd sub-pixels by data of even sub-pixels which are arranged in a horizontal line of the RGB data or subtract data of the even sub-pixels by the odd sub-pixels, to obtain an Msum value, and then determine polarity of corresponding a scan line according to the Msum value and the accumulated result of the vertical synchronous-signal counter accumulating the amount of the vertical synchronous signals; and a polarity-signal generator, electrically coupled to the data operator, to output polar-controlling signals according to the determination result of the data operator. - View Dependent Claims (14, 15, 16, 17)
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Specification