Measurement device for measuring gray-to-gray response time

1. A measurement device for measuring a gray-to-gray response time of a liquid crystal display (LCD), the measurement device comprising:

a signal generating unit for generating a video signal comprising a synchronous message;

a data processing unit coupled to the signal generating unit for recording the synchronous message and controlling the LCD to generate an optic signal according to the video signal; and

a data acquisition unit coupled to the data processing unit for converting the optic signal into a digital data so that the data processing unit measures the gray-to-gray response time of the LCD according to the synchronous message and the digital data.

2. The measurement device as recited in claim 1 , wherein the synchronous message is a vertical synchronous signal.

3. The measurement device as recited in claim 1 , wherein the data processing unit comprises:

an I/O interface for signal inputting or outputting;

a scaler for performing a scaling operation on the video signal; and

a micro-controller for generating a sampling command capable of being synchronized with the synchronous message according to the synchronous message.

4. The measurement device as recited in claim 3 , wherein the micro-controller adjusts a sampling rate of the sampling command according to the signal generating unit.

5. The measurement device as recited in claim 1 , wherein the I/O interface comprises a plurality of I/O ports.

6. The measurement device as recited in claim 3 , wherein the data processing unit further comprises a signal converter for converting the video signal into an output signal.

7. The measurement device as recited in claim 6 , wherein the output signal is a transition-minimized differential signal.

8. The measurement device as recited in claim 6 , wherein the output signal is a low-voltage differential signal.

9. The measurement device as recited in claim 6 , wherein the output signal is a reduced-swing differential signal.

10. The measurement device as recited in claim 3 , wherein the data processing unit further comprises a memory for storing the synchronous message and the digital data.

11. The measurement device as recited in claim 1 , wherein the data acquisition unit comprises:

an optic sensor for sensing the optic signal and converting the optic signal into a current signal;

a current-voltage converter for converting the current signal into a voltage signal;

a gain amplifier for amplifying the voltage signal; and

an analog-to-digital converter for converting the voltage signal into the digital data according to a sampling command.

12. A measurement device for measuring a gray-to-gray response time of a liquid crystal display (LCD), the measurement device comprising:

a micro-controller for generating a sampling command capable of being synchronized with a synchronous message according to a video signal comprising the synchronous message;

a scaler for performing a scaling operation on the video signal so as to control the LCD to generate an optic signal;

a data acquisition unit for processing a signal recording information of the optic signal so as to output an electric signal; and

an analog-to-digital converter for converting the electric signal into a digital data according to the sampling command,

wherein the microcontroller measures the gray-to-gray response time of the LCD according to the synchronous message and the digital data.

13. The measurement device as recited in claim 12 , wherein the synchronous message is a vertical synchronous signal.

14. The measurement device as recited in claim 12 , wherein the video signal comprising the synchronous message is generated from a computer.

15. The measurement device as recited in claim 12 , wherein the signal recording information of the optic signal is generated from an optic sensor.

16. The measurement device as recited in claim 12 , wherein the data acquisition unit comprises:

a current-voltage converter for converting the signal recording information of the optic signal into the electric signal; and

a gain amplifier for amplifying the electric signal.

17. The measurement device as recited in claim 12 , wherein the micro-controller adjusts a sampling rate of the sampling command.

18. The measurement device as recited in claim 12 , further comprising a memory for storing the synchronous message and the digital data.