Apparatus and method for controlling dual display device using RGB interface
Dual display control device and method using an RGB interface are provided. A dual display control device controlling a first display device and a second display device using an RGB interface includes: a synchronization signal output unit that outputs vertical and horizontal synchronization signals to the first display device and the second display device; and a data output unit that outputs first data to the first display device in a first section of a first pixel clock and outputs second data to the second display device in a second section of a second pixel clock, in accordance with the vertical and horizontal synchronization signal via a data line shared by and connected to the first display device and the second display device. Accordingly, it is possible to reduce the number of signal lines, thereby embodying an efficient hardware configuration.
1. A dual display control device controlling a first display device and a second display device using an RGB interface, comprising:
a synchronization signal output unit that outputs vertical and horizontal synchronization signals to the first display device and the second display device; and
a data output unit that outputs first data to the first display device in a first section of a first pixel clock and outputs second data to the second display device in a second section of a second pixel clock, in accordance with the vertical and horizontal synchronization signal via a data line shared by and connected to the first display device and the second display device device,
wherein the synchronization signal output unit outputs the vertical synchronization signal to one signal line that is shared by and connected to the first display device and the second display device, and outputs the horizontal synchronization signal to another signal line that is shared by and connected to the first display device and the second display device.
2. The dual display control device according to claim 1 , wherein the first section of the first pixel clock and the second section of the second pixel clock are rising edge sections.
3. The dual display control device according to claim 1 , wherein the first pixel clock and the second pixel clock have a phase difference.
4. The dual display control device according to claim 1 , wherein the first pixel clock and the second pixel clock are the same pixel clock, the first section of the pixel clock is a rising edge section, and the second section of the pixel clock is a falling edge section.
5. The dual display control device according to claim 1 , wherein the synchronization signal output unit outputs the vertical and horizontal synchronization signals corresponding to different resolutions to the first display device and the second display device via the one signal line and the another signal line.
6. The dual display control device according to claim 1 , wherein a phase difference between the first pixel clock and the second pixel clock is one of 90 degrees and 180 degrees.
7. A dual display control method of a dual display control device controlling a first display device and a second display device using an RGB interface, comprising:
outputting vertical and horizontal synchronization signals to the first display device and the second display device; and
outputting first data to the first display device in a first section of a first pixel clock and outputting second data to the second display device in a second section of a second pixel clock, in accordance with the vertical and horizontal synchronization signal via a data line shared by and connected to the first display device and the second display device,
wherein the outputting of the vertical and horizontal synchronization signals to the first display device and the second display device includes outputting the vertical synchronization signal to one signal line that is shared by and connected to the first display device and the second display device, and outputting the horizontal synchronization signal to another signal line that is shared by and connected to the first display device and the second display device.
8. The dual display control method according to claim 7 , wherein the first section of the first pixel clock and the second section of the second pixel clock are rising edge sections.
9. The dual display control method according to claim 7 , wherein the first pixel clock and the second pixel clock have a phase difference.
10. The dual display control method according to claim 7 , wherein the first pixel clock and the second pixel clock are the same pixel clock, the first section of the pixel clock is a rising edge section, and the second section of the pixel clock is a falling edge section.
11. The dual display control method according to claim 7 , wherein the vertical and horizontal synchronization signals corresponding to different resolutions are output to the first display device and the second display device via the one signal line and the another signal line.
12. The dual display control method according to claim 7 , wherein a phase difference between the first pixel clock and the second pixel clock is one of 90 degrees and 180 degrees.