Image adjusting apparatus and associated method
An image adjusting method for extending vertical blanking intervals of an image signal is provided. Using the image adjusting method, an adjusted image signal is synchronized with an image signal before the adjustment to prevent image delay. The image adjusting method comprises providing a first image signal having a first data enable signal, wherein the first data enable signal has a first data enable duration; and generating a second data enable signal having a second data enable duration. The first and second data enable durations correspond to a same image frame of an image signal, and the second data enable duration substantially overlaps the first data enable duration.
1. An image adjusting method applied to an image adjusting apparatus, comprising:
providing a first image signal comprising a first data enable signal and a first image data signal comprising pixel data of an image frame, wherein the first data enable signal has a first data enable duration, and the pixel data of the image frame is written into a non-transitory storage memory during the first data enable duration according to the first data enable signal; and
generating a second data enable signal, wherein the second data enable signal has a second data enable duration, and pixel data of the image frame begins to be outputted from the non-transitory storage memory during the second data enable duration before the pixel data of the image frame is completely written into the non-transitory storage memory;
wherein, the first data enable duration and second data enable duration correspond to a same image frame, and the second data enable duration overlaps the first data enable duration.
2. The image adjusting method as claimed in claim 1 , wherein the second data enable duration is smaller than the first data enable duration.
3. The image adjusting method as claimed in claim 1 , wherein the second data enable duration starts after the first data enable duration starts.
4. The image adjusting method as claimed in claim 1 , wherein the second image data signal and the second data enable signal form a second image signal.
5. The image adjusting method as claimed in claim 1 , further comprising:
generating a control signal to a pair of three-dimensional stereo glasses according to the second data enable signal.
6. The image adjusting method as claimed in claim 1 , further comprising:
transmitting the second data enable signal to a pair of three-dimensional stereo glasses.
7. An image adjusting apparatus, for extending a vertical blanking interval of a first image signal, the first image signal comprising a first data enable signal and a first image data signal comprising pixel data of an image frame, the first data enable signal having a first data enable duration, the image adjusting apparatus comprising:
a non-transitory storage memory, for storing the pixel data of the first image signal according to the first data enable signal; and
a data enable signal generator, for generating a second data enable signal and controlling when the non-transitory storage memory outputs the pixel data;
wherein, the second data enable signal includes a second data enable duration, the first data enable duration and the second data enable duration correspond to the image frame, and the second data enable duration overlaps the first data enable duration; and
wherein, the non-transitory storage memory receives and stores the pixel data during the first data enable duration, and the non-transitory storage memory begins to output the pixel data of the image frame during the second data enable duration before the pixel data of the image frame is completely written into the non-transitory storage memory.
8. The image adjusting apparatus as claimed in claim 7 , wherein the data enable signal generator generates the second data enable signal according to a predetermined time, a frame cycle, and a read clock.
9. The image adjusting apparatus as claimed in claim 7 , wherein the second data enable signal and the pixel data outputted by the non-transitory storage memory form a second image signal.
10. The image adjusting apparatus as claimed in claim 7 , wherein the data enable signal generator generates a read signal to control when the non-transitory storage memory outputs the pixel data.
11. The image adjusting apparatus as claimed in claim 10 , wherein the read signal is the second data enable signal.
12. The image adjusting apparatus as claimed in claim 7 , wherein the data enable signal generator further generates a control signal to a pair of three-dimensional stereo glasses.
13. The image adjusting apparatus as claimed in claim 12 , wherein the control signal is the second data enable signal.