Timing controller for reducing power consumption and display device having the same
AssigneeHimax Technologies Limited
InventorShih-Po Chen
Life of this patent
Estimating the term…
Abstract
The invention provides a display device with reduced power consumption, comprising a host applied to generate a first image signal, a timing controller connected to the host, applied to generate a second image signal and comprised a memory for storing image data, and a panel connected to the timing controller and applied to receive the second image signal for displaying image frames. When the display device is in a power-saving mode, the host is powered down, and the timing controller generates the second image signal according to the image data stored in the memory and outputs the second image signal to the panel.
Claims17
A display device, comprising:
- a host adapted to generate a first image signal, the host being a video grid array (VGA) system;
- a timing controller connected with the host and comprising a memory, wherein the timing controller is adapted to generate a second image signal for driving image display;
- and
- a panel connected with the timing controller, wherein the panel is adapted to receive the second image signal for displaying image frames;
- wherein the host is configured to send a first control signal to the timing controller to trigger the start of a transition phase in preparation of a switch to a power-saving mode of operation, and to shut down once the transition phase ends, wherein the first control signal includes information related to a predetermined amount of image data to store in the memory;
- in response to the first control signal, the timing controller is configured to store image data in the memory that are used for display by the panel in the power-saving mode of operation, and output a second control signal to the host when the image data stored in the memory during the transition phase reaches the predetermined amount, thereby ending the transition phase.
A timing controller, comprising a memory for storing image data, wherein the timing controller is configured to
- receive a first image signal from a host and to provide a second image signal to a panel for driving image display, the host being a VGA system;
- receive a first control signal from the host that triggers the start of a transition phase in preparation of a switch to a power-saving mode of operation, wherein the first control signal includes information related to a predetermined amount of image data to store in the memory;
- in response to the first control signal, storing image data in the memory that are used for display by the panel in the power-saving mode of operation;
- and
- sending a second control signal to the host when the image data stored in the memory during the transition phase reaches the predetermined amount, thereby ending the transition phase.
Dependencies are inferred from the claim text.