image communication device
An image communication and image technology, applied in static indicators, instruments, etc., can solve the problem of high power consumption and achieve low power consumption
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 approach
[0092] First, a first embodiment of the present invention will be described. In the first embodiment of the present invention, the timing controller 11 controls the power consumption of the display panel (LCD) by completely stopping data transfer from the timing controller 11 to the source driver 12 during the blanking period. Specifically, the timing controller 11 extracts or generates an image synchronization signal based on an image signal input from the GPU. For example, if Figure 5 As shown, the image synchronous signal includes: a horizontal synchronous signal (H: Hsync) for synchronously driving a plurality of source drivers 12 or a vertical synchronous signal (V: Vsync) for synchronously driving a plurality of gate drivers, and includes External enable signal (DE) for periodically repeating active period and blanking period. The active period and the blanking period basically correspond to the horizontal synchronization signal.
[0093] Here, if Figure 5 As shown...
no. 2 approach
[0098] Next, a second embodiment of the present invention will be described. In the second embodiment, if Figure 7 and Figure 8 As shown, the power consumption of the panel module is reduced by reducing the frame rate in the panel self refresh (PSR, Panel Self Refresh) mode. Specifically, when the PSR (panel self-refresh) control unit 42 of the timing controller 11 recognizes that it is in the PSR (panel self-refresh) mode, it lowers the frame rate of the image data in real time to achieve low power consumption of the panel module. change. That is, as described above, the timing controller side can extract or generate video synchronization signals (Hsync, Vsync, DE). The video synchronization signal includes a vertical synchronization signal (V: Vsync) for driving synchronously with a plurality of gate drivers. The timing controller 11 can change the frame rate by controlling the timing of the vertical synchronization signal. Figure 7 In the shown example, the frame ra...
no. 3 approach
[0102] Next, a third embodiment of the present invention will be described. In the third embodiment, the power consumption is reduced by thinning out the image lines constituting the image data at, for example, 60 Hz without lowering the frame rate of the image data. Specifically, the timing controller 11 has a line thinning control unit 47 . The line thinning control unit 47 stops the transfer of at least two or more image lines among the plurality of image lines transferred from the data transmission unit 411 to each of the plurality of source drivers 12 in a certain image frame.
[0103] For example, Figure 10 In the shown example, the transmission of half of the image lines among the plurality of image lines constituting certain image data is stopped. Such as Figure 10 As shown, transfer from the timing controller 11 to the source driver 12 is made to stop for the thinned-out lines. Therefore, by thinning out the image lines, it is possible to reduce the power consum...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More